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gerrit.nordix.org / codeaurora / quic / qsdk / oss / lklm / qca-nss-ecm / 363f16880cbb148728d5acd483afab997f94b496 / . / ecm_db.c
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/*
**************************************************************************
* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all copies.
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
**************************************************************************
*/
#include <linux/version.h>
#include <linux/types.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/icmp.h>
#include <linux/kthread.h>
#include <linux/debugfs.h>
#include <linux/pkt_sched.h>
#include <linux/string.h>
#include <linux/random.h>
#include <net/route.h>
#include <net/ip.h>
#include <net/tcp.h>
#include <asm/unaligned.h>
#include <asm/uaccess.h> /* for put_user */
#include <net/ipv6.h>
#include <linux/inet.h>
#include <linux/in.h>
#include <linux/udp.h>
#include <linux/tcp.h>
#include <linux/netfilter_ipv4.h>
#include <linux/netfilter_bridge.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_l3proto.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
#include <net/netfilter/ipv4/nf_defrag_ipv4.h>
/*
* Debug output levels
* 0 = OFF
* 1 = ASSERTS / ERRORS
* 2 = 1 + WARN
* 3 = 2 + INFO
* 4 = 3 + TRACE
*/
#define DEBUG_LEVEL ECM_DB_DEBUG_LEVEL
#include "ecm_types.h"
#include "ecm_db_types.h"
#include "ecm_state.h"
#include "ecm_tracker.h"
#include "ecm_classifier.h"
#include "ecm_front_end_types.h"
#include "ecm_classifier_default.h"
#include "ecm_db.h"
/*
* Magic numbers
*/
#define ECM_DB_CONNECTION_INSTANCE_MAGIC 0xff23
#define ECM_DB_HOST_INSTANCE_MAGIC 0x2873
#define ECM_DB_MAPPING_INSTANCE_MAGIC 0x8765
#define ECM_DB_LISTENER_INSTANCE_MAGIC 0x9876
#define ECM_DB_NODE_INSTANCE_MAGIC 0x3312
#define ECM_DB_IFACE_INSTANCE_MAGIC 0xAEF1
#ifdef ECM_DB_CTA_TRACK_ENABLE
#define ECM_DB_CLASSIFIER_TYPE_ASSIGNMENT_MAGIC 0xAEF4
#endif
#ifdef ECM_MULTICAST_ENABLE
#define ECM_DB_MULTICAST_INSTANCE_MAGIC 0xc34a
#endif
/*
* Global lists.
* All instances are inserted into global list - this allows easy iteration of all instances of a particular type.
* The list is doubly linked for fast removal. The list is in no particular order.
*/
struct ecm_db_connection_instance *ecm_db_connections = NULL;
struct ecm_db_mapping_instance *ecm_db_mappings = NULL;
struct ecm_db_host_instance *ecm_db_hosts = NULL;
struct ecm_db_node_instance *ecm_db_nodes = NULL;
struct ecm_db_iface_instance *ecm_db_interfaces = NULL;
/*
* Connection hash table
*/
#define ECM_DB_CONNECTION_HASH_SLOTS 32768
static struct ecm_db_connection_instance *ecm_db_connection_table[ECM_DB_CONNECTION_HASH_SLOTS];
/* Slots of the connection hash table */
static int ecm_db_connection_table_lengths[ECM_DB_CONNECTION_HASH_SLOTS];
/* Tracks how long each chain is */
static int ecm_db_connection_count = 0; /* Number of connections allocated */
static int ecm_db_connection_serial = 0; /* Serial number - ensures each connection has a unique serial number.
* Serial numbers are used mainly by classifiers that keep their own state
* and can 'link' their state to the right connection using a serial number.
* The serial number is also used as a soft linkage to other subsystems such as NA.
*/
typedef uint32_t ecm_db_connection_hash_t;
/*
* Connection serial number hash table
*/
#define ECM_DB_CONNECTION_SERIAL_HASH_SLOTS 32768
static struct ecm_db_connection_instance *ecm_db_connection_serial_table[ECM_DB_CONNECTION_SERIAL_HASH_SLOTS];
/* Slots of the connection serial hash table */
static int ecm_db_connection_serial_table_lengths[ECM_DB_CONNECTION_SERIAL_HASH_SLOTS];
/* Tracks how long each chain is */
typedef uint32_t ecm_db_connection_serial_hash_t;
/*
* Mapping hash table
*/
#define ECM_DB_MAPPING_HASH_SLOTS 32768
static struct ecm_db_mapping_instance *ecm_db_mapping_table[ECM_DB_MAPPING_HASH_SLOTS];
/* Slots of the mapping hash table */
static int ecm_db_mapping_table_lengths[ECM_DB_MAPPING_HASH_SLOTS];
/* Tracks how long each chain is */
static int ecm_db_mapping_count = 0; /* Number of mappings allocated */
typedef uint32_t ecm_db_mapping_hash_t;
/*
* Host hash table
*/
#define ECM_DB_HOST_HASH_SLOTS 32768
static struct ecm_db_host_instance *ecm_db_host_table[ECM_DB_HOST_HASH_SLOTS];
/* Slots of the host hash table */
static int ecm_db_host_table_lengths[ECM_DB_HOST_HASH_SLOTS];
/* Tracks how long each chain is */
static int ecm_db_host_count = 0; /* Number of hosts allocated */
typedef uint32_t ecm_db_host_hash_t;
/*
* Node hash table
*/
#define ECM_DB_NODE_HASH_SLOTS 32768
static struct ecm_db_node_instance *ecm_db_node_table[ECM_DB_NODE_HASH_SLOTS];
/* Slots of the node hash table */
static int ecm_db_node_table_lengths[ECM_DB_NODE_HASH_SLOTS];
/* Tracks how long each chain is */
static int ecm_db_node_count = 0; /* Number of nodes allocated */
typedef uint32_t ecm_db_node_hash_t;
/*
* Interface hash table
*/
#define ECM_DB_IFACE_HASH_SLOTS 8
static struct ecm_db_iface_instance *ecm_db_iface_table[ECM_DB_IFACE_HASH_SLOTS];
/* Slots of the interface hash table */
static int ecm_db_iface_table_lengths[ECM_DB_IFACE_HASH_SLOTS];
/* Tracks how long each chain is */
static int ecm_db_iface_count = 0; /* Number of interfaces allocated */
typedef uint32_t ecm_db_iface_hash_t;
#define ECM_DB_IFACE_ID_HASH_SLOTS 8
static struct ecm_db_iface_instance *ecm_db_iface_id_table[ECM_DB_IFACE_ID_HASH_SLOTS];
/* Slots of the interface id hash table */
static int ecm_db_iface_id_table_lengths[ECM_DB_IFACE_ID_HASH_SLOTS];
/* Tracks how long each chain is */
typedef uint32_t ecm_db_iface_id_hash_t;
/*
* Listeners
*/
static int ecm_db_listeners_count = 0; /* Number of listeners allocated */
static struct ecm_db_listener_instance *ecm_db_listeners = NULL;
/* Event listeners */
#ifdef ECM_STATE_OUTPUT_ENABLE
/*
* ecm_db_iface_state_get_method_t
* Used to obtain interface state
*/
typedef int (*ecm_db_iface_state_get_method_t)(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi);
#endif
/*
* struct ecm_db_iface_instance
*/
struct ecm_db_iface_instance {
struct ecm_db_iface_instance *next; /* Next instance in global list */
struct ecm_db_iface_instance *prev; /* Previous instance in global list */
struct ecm_db_iface_instance *hash_next; /* Next Interface in the chain of Interfaces */
struct ecm_db_iface_instance *hash_prev; /* previous Interface in the chain of Interfaces */
ecm_db_iface_type_t type; /* RO: Type of interface */
uint32_t time_added; /* RO: DB time stamp when the Interface was added into the database */
int32_t interface_identifier; /* RO: The operating system dependent identifier of this interface */
int32_t ae_interface_identifier; /* RO: The accel engine identifier of this interface */
char name[IFNAMSIZ]; /* Name of interface */
int32_t mtu; /* Interface MTU */
struct ecm_db_iface_instance *iface_id_hash_next; /* Next interface in the chain of interface id table */
struct ecm_db_iface_instance *iface_id_hash_prev; /* Previous interface in the chain of interface id table */
ecm_db_iface_id_hash_t iface_id_hash_index; /* Hash index value of chains */
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
uint64_t from_data_total; /* Total of data sent by this Interface */
uint64_t to_data_total; /* Total of data sent to this Interface */
uint64_t from_packet_total; /* Total of packets sent by this Interface */
uint64_t to_packet_total; /* Total of packets sent to this Interface */
uint64_t from_data_total_dropped;
uint64_t to_data_total_dropped;
uint64_t from_packet_total_dropped;
uint64_t to_packet_total_dropped;
#endif
#ifdef ECM_DB_XREF_ENABLE
/*
* For convenience interfaces keep lists of connections that have been established
* from them and to them.
* In fact the same connection could be listed as from & to on the same interface (think: WLAN<>WLAN AP function)
* Interfaces keep this information for rapid iteration of connections e.g. when an interface 'goes down' we
* can defunct all associated connections or destroy any accel engine rules.
*/
struct ecm_db_connection_instance *from_connections; /* list of connections made from this interface */
struct ecm_db_connection_instance *to_connections; /* list of connections made to this interface */
struct ecm_db_connection_instance *from_nat_connections; /* list of NAT connections made from this interface */
struct ecm_db_connection_instance *to_nat_connections; /* list of NAT connections made to this interface */
/*
* Normally only the node refers to the interfaces which it is reachable upon.
* The interface also keeps a list of all nodes that can be reached.
*/
struct ecm_db_node_instance *nodes; /* Nodes associated with this Interface */
int node_count; /* Number of Nodes in the nodes list */
#endif
/*
* Interface specific information.
* type identifies which information is applicable.
*/
union {
struct ecm_db_interface_info_ethernet ethernet; /* type == ECM_DB_IFACE_TYPE_ETHERNET */
#ifdef ECM_INTERFACE_VLAN_ENABLE
struct ecm_db_interface_info_vlan vlan; /* type == ECM_DB_IFACE_TYPE_VLAN */
#endif
#ifdef ECM_INTERFACE_BOND_ENABLE
struct ecm_db_interface_info_lag lag; /* type == ECM_DB_IFACE_TYPE_LAG */
#endif
struct ecm_db_interface_info_bridge bridge; /* type == ECM_DB_IFACE_TYPE_BRIDGE */
#ifdef ECM_INTERFACE_PPPOE_ENABLE
struct ecm_db_interface_info_pppoe pppoe; /* type == ECM_DB_IFACE_TYPE_PPPOE */
#endif
#ifdef ECM_INTERFACE_L2TPV2_ENABLE
struct ecm_db_interface_info_pppol2tpv2 pppol2tpv2; /* type == ECM_DB_IFACE_TYPE_PPPOL2TPV2 */
#endif
struct ecm_db_interface_info_unknown unknown; /* type == ECM_DB_IFACE_TYPE_UNKNOWN */
struct ecm_db_interface_info_loopback loopback; /* type == ECM_DB_IFACE_TYPE_LOOPBACK */
#ifdef ECM_INTERFACE_IPSEC_ENABLE
struct ecm_db_interface_info_ipsec_tunnel ipsec_tunnel; /* type == ECM_DB_IFACE_TYPE_IPSEC_TUNNEL */
#endif
#ifdef ECM_INTERFACE_SIT_ENABLE
struct ecm_db_interface_info_sit sit; /* type == ECM_DB_IFACE_TYPE_SIT (6-in-4) */
#endif
#ifdef ECM_INTERFACE_TUNIPIP6_ENABLE
#ifdef ECM_IPV6_ENABLE
struct ecm_db_interface_info_tunipip6 tunipip6; /* type == ECM_DB_IFACE_TYPE_TUNIPIP6 (IPIP v6 Tunnel i.e. TUNNEL6) */
#endif
#endif
} type_info;
#ifdef ECM_STATE_OUTPUT_ENABLE
ecm_db_iface_state_get_method_t state_get; /* Type specific method to return state */
#endif
ecm_db_iface_final_callback_t final; /* Callback to owner when object is destroyed */
void *arg; /* Argument returned to owner in callbacks */
uint32_t flags;
int refs; /* Integer to trap we never go negative */
ecm_db_iface_hash_t hash_index;
#if (DEBUG_LEVEL > 0)
uint16_t magic;
#endif
};
/*
* Interface flags
*/
#define ECM_DB_IFACE_FLAGS_INSERTED 1 /* Interface is inserted into connection database tables */
/*
* struct ecm_db_node_instance
*/
struct ecm_db_node_instance {
struct ecm_db_node_instance *next; /* Next instance in global list */
struct ecm_db_node_instance *prev; /* Previous instance in global list */
struct ecm_db_node_instance *hash_next; /* Next node in the chain of nodes */
struct ecm_db_node_instance *hash_prev; /* previous node in the chain of nodes */
uint8_t address[ETH_ALEN]; /* RO: MAC Address of this node */
#ifdef ECM_DB_XREF_ENABLE
/*
* For convenience nodes keep lists of connections that have been established from them and to them.
* In fact the same connection could be listed as from & to on the same interface (think: WLAN<>WLAN AP function)
* Nodes keep this information for rapid iteration of connections e.g. when a node 'goes down' we
* can defunct all associated connections or destroy any accel engine rules.
*/
struct ecm_db_connection_instance *from_connections; /* list of connections made from this node */
struct ecm_db_connection_instance *to_connections; /* list of connections made to this node */
int from_connections_count; /* Number of connections in the from_connections list */
int to_connections_count; /* Number of connections in the to_connections list */
struct ecm_db_connection_instance *from_nat_connections; /* list of NAT connections made from this node */
struct ecm_db_connection_instance *to_nat_connections; /* list of NAT connections made to this node */
int from_nat_connections_count; /* Number of connections in the from_nat_connections list */
int to_nat_connections_count; /* Number of connections in the to_nat_connections list */
/*
* Nodes reachable from an interface are stored in a linked list maintained by that interface.
* This is so, given an interface, you can examine all nodes reachable from it.
*/
struct ecm_db_node_instance *node_next; /* The next node within the same iface nodes list */
struct ecm_db_node_instance *node_prev; /* The previous node within the same iface nodes list */
#endif
uint32_t time_added; /* RO: DB time stamp when the node was added into the database */
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
uint64_t from_data_total; /* Total of data sent by this node */
uint64_t to_data_total; /* Total of data sent to this node */
uint64_t from_packet_total; /* Total of packets sent by this node */
uint64_t to_packet_total; /* Total of packets sent to this node */
uint64_t from_data_total_dropped;
uint64_t to_data_total_dropped;
uint64_t from_packet_total_dropped;
uint64_t to_packet_total_dropped;
#endif
struct ecm_db_iface_instance *iface; /* The interface to which this node relates */
ecm_db_node_final_callback_t final; /* Callback to owner when object is destroyed */
void *arg; /* Argument returned to owner in callbacks */
uint8_t flags;
int refs; /* Integer to trap we never go negative */
ecm_db_node_hash_t hash_index;
#if (DEBUG_LEVEL > 0)
uint16_t magic;
#endif
};
/*
* Node flags
*/
#define ECM_DB_NODE_FLAGS_INSERTED 1 /* Node is inserted into connection database tables */
/*
* struct ecm_db_host_instance
*/
struct ecm_db_host_instance {
struct ecm_db_host_instance *next; /* Next instance in global list */
struct ecm_db_host_instance *prev; /* Previous instance in global list */
struct ecm_db_host_instance *hash_next; /* Next host in the chain of hosts */
struct ecm_db_host_instance *hash_prev; /* previous host in the chain of hosts */
ip_addr_t address; /* RO: IPv4/v6 Address of this host */
bool on_link; /* RO: false when this host is reached via a gateway */
uint32_t time_added; /* RO: DB time stamp when the host was added into the database */
#ifdef ECM_DB_XREF_ENABLE
/*
* Normally the mapping refers to the host it requires.
* However the host also keeps a list of all mappings that are associated with it.
*/
struct ecm_db_mapping_instance *mappings; /* Mappings made on this host */
int mapping_count; /* Number of mappings in the mapping list */
#endif
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
uint64_t from_data_total; /* Total of data sent by this host */
uint64_t to_data_total; /* Total of data sent to this host */
uint64_t from_packet_total; /* Total of packets sent by this host */
uint64_t to_packet_total; /* Total of packets sent to this host */
uint64_t from_data_total_dropped;
uint64_t to_data_total_dropped;
uint64_t from_packet_total_dropped;
uint64_t to_packet_total_dropped;
#endif
ecm_db_host_final_callback_t final; /* Callback to owner when object is destroyed */
void *arg; /* Argument returned to owner in callbacks */
uint32_t flags;
int refs; /* Integer to trap we never go negative */
ecm_db_host_hash_t hash_index;
#if (DEBUG_LEVEL > 0)
uint16_t magic;
#endif
};
/*
* Host flags
*/
#define ECM_DB_HOST_FLAGS_INSERTED 1 /* Host is inserted into connection database tables */
/*
* struct ecm_db_mapping_instance
*/
struct ecm_db_mapping_instance {
struct ecm_db_mapping_instance *next; /* Next instance in global list */
struct ecm_db_mapping_instance *prev; /* Previous instance in global list */
struct ecm_db_mapping_instance *hash_next; /* Next mapping in the chain of mappings */
struct ecm_db_mapping_instance *hash_prev; /* previous mapping in the chain of mappings */
uint32_t time_added; /* RO: DB time stamp when the connection was added into the database */
struct ecm_db_host_instance *host; /* The host to which this mapping relates */
int port; /* RO: The port number on the host - only applicable for mapping protocols that are port based */
#ifdef ECM_DB_XREF_ENABLE
/*
* For convenience mappings keep lists of connections that have been established from them and to them.
* In fact the same connection could be listed as from & to on the same interface (think: WLAN<>WLAN AP function)
* Mappings keep this information for rapid iteration of connections e.g. given a mapping we
* can defunct all associated connections or destroy any accel engine rules.
*/
struct ecm_db_connection_instance *from_connections; /* list of connections made from this host mapping */
struct ecm_db_connection_instance *to_connections; /* list of connections made to this host mapping */
struct ecm_db_connection_instance *from_nat_connections; /* list of NAT connections made from this host mapping */
struct ecm_db_connection_instance *to_nat_connections; /* list of NAT connections made to this host mapping */
/*
* While a mapping refers to the host it requires.
* The host also keeps a list of all mappings that are associated with it, this is that list linkage.
*/
struct ecm_db_mapping_instance *mapping_next; /* Next mapping in the list of mappings for the host */
struct ecm_db_mapping_instance *mapping_prev; /* previous mapping in the list of mappings for the host */
#endif
/*
* Connection counts
*/
int tcp_from;
int tcp_to;
int udp_from;
int udp_to;
int tcp_nat_from;
int tcp_nat_to;
int udp_nat_from;
int udp_nat_to;
/*
* Connection counts
*/
int from; /* Number of connections made from */
int to; /* Number of connections made to */
int nat_from; /* Number of connections made from (nat) */
int nat_to; /* Number of connections made to (nat) */
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
/*
* Data totals
*/
uint64_t from_data_total; /* Total of data sent by this mapping */
uint64_t to_data_total; /* Total of data sent to this mapping */
uint64_t from_packet_total; /* Total of packets sent by this mapping */
uint64_t to_packet_total; /* Total of packets sent to this mapping */
uint64_t from_data_total_dropped;
uint64_t to_data_total_dropped;
uint64_t from_packet_total_dropped;
uint64_t to_packet_total_dropped;
#endif
ecm_db_mapping_final_callback_t final; /* Callback to owner when object is destroyed */
void *arg; /* Argument returned to owner in callbacks */
uint32_t flags;
int refs; /* Integer to trap we never go negative */
ecm_db_mapping_hash_t hash_index;
#if (DEBUG_LEVEL > 0)
uint16_t magic;
#endif
};
/*
* Mapping flags
*/
#define ECM_DB_MAPPING_FLAGS_INSERTED 1 /* Mapping is inserted into connection database tables */
/*
* struct ecm_db_timer_group
* A timer group - all group members within the same group have the same TTL reset value.
*
* Expiry of entries occurs from tail to head.
*/
struct ecm_db_timer_group {
struct ecm_db_timer_group_entry *head; /* Most recently used entry in this timer group */
struct ecm_db_timer_group_entry *tail; /* Least recently used entry in this timer group. */
uint32_t time; /* Time in seconds a group entry will be given to live when 'touched' */
ecm_db_timer_group_t tg; /* RO: The group id */
#if (DEBUG_LEVEL > 0)
uint16_t magic;
#endif
};
/*
* Timers and cleanup
*/
static uint32_t ecm_db_time = 0; /* Time in seconds since start */
static struct ecm_db_timer_group ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_MAX];
/* Timer groups */
static struct timer_list ecm_db_timer; /* Timer to drive timer groups */
#ifdef ECM_DB_CTA_TRACK_ENABLE
/*
* Classifier TYPE assignment lists.
*
* For each type of classifier a list is kept of all connections assigned a classifier of that type.
* This permits a classifier type to rapidly retrieve all connections with classifiers assigned to it of that type.
*
* NOTE: This is in addition to the basic functionality whereby a connection keeps a list of classifier instances
* that are assigned to it in descending order of priority.
*/
/*
* struct ecm_db_connection_classifier_type_assignment
* List linkage
*/
struct ecm_db_connection_classifier_type_assignment {
struct ecm_db_connection_instance *next; /* Next connection assigned to a classifier of this type */
struct ecm_db_connection_instance *prev; /* Previous connection assigned to a classifier of this type */
int iteration_count; /* >0 if something is examining this list entry and it may not be unlinked. The connection will persist. */
bool pending_unassign; /* True when the connection has been unassigned from the type, when iteration_count drops to 0 it may be removed from the list */
#if (DEBUG_LEVEL > 0)
uint16_t magic;
#endif
};
/*
* struct ecm_db_connection_classifier_type_assignment_list
* A list, one for each classifier type.
*/
struct ecm_db_connection_classifier_type_assignment_list {
struct ecm_db_connection_instance *type_assignments_list;
/* Lists of connections assigned to this type of classifier */
int32_t type_assignment_count; /* Number of connections in the list */
} ecm_db_connection_classifier_type_assignments[ECM_CLASSIFIER_TYPES];
/* Each classifier type has a list of connections that are assigned to classifier instances of that type */
#endif
/*
* struct ecm_db_connection_instance
*/
struct ecm_db_connection_instance {
struct ecm_db_connection_instance *next; /* Next instance in global list */
struct ecm_db_connection_instance *prev; /* Previous instance in global list */
struct ecm_db_connection_instance *hash_next; /* Next connection in chain */
struct ecm_db_connection_instance *hash_prev; /* Previous connection in chain */
ecm_db_connection_hash_t hash_index; /* The hash table slot whose chain of connections this is inserted into */
struct ecm_db_connection_instance *serial_hash_next; /* Next connection in serial hash chain */
struct ecm_db_connection_instance *serial_hash_prev; /* Previous connection in serial hash chain */
ecm_db_connection_hash_t serial_hash_index; /* The hash table slot whose chain of connections this is inserted into */
uint32_t time_added; /* RO: DB time stamp when the connection was added into the database */
int ip_version; /* RO: The version of IP protocol this connection was established for */
int protocol; /* RO: Protocol of the connection */
ecm_db_direction_t direction; /* RO: 'Direction' of connection establishment. */
bool is_routed; /* RO: True when connection is routed, false when not */
/*
* Connection endpoint mapping
*/
struct ecm_db_mapping_instance *mapping_from; /* The connection was established from this mapping */
struct ecm_db_mapping_instance *mapping_to; /* The connection was established to this mapping */
/*
* Connection endpoint mapping for NAT purposes
* NOTE: For non-NAT connections these would be identical to the endpoint mappings.
*/
struct ecm_db_mapping_instance *mapping_nat_from; /* The connection was established from this mapping */
struct ecm_db_mapping_instance *mapping_nat_to; /* The connection was established to this mapping */
/*
* From / To Node (NAT and non-NAT).
* Connections keep references to the nodes upon which they operate.
* Gut feeling would tell us this is unusual since it should be the case that
* the HOST refer to the node, e.g. IP address to a MAC address.
* However there are some 'interesting' usage models where the same IP address may appear
* from different nodes / MAC addresses because of this the unique element here is the connection
* and so we record the node information directly here.
*/
struct ecm_db_node_instance *from_node; /* Node from which this connection was established */
struct ecm_db_node_instance *to_node; /* Node to which this connection was established */
struct ecm_db_node_instance *from_nat_node; /* Node from which this connection was established */
struct ecm_db_node_instance *to_nat_node; /* Node to which this connection was established */
#ifdef ECM_DB_XREF_ENABLE
/*
* The connection has references to the mappings (both nat and non-nat) as required above.
* Also mappings keep lists of connections made to/from them so that they may be iterated
* to determine associated connections in each direction/situation (e.g. "defuncting all connections made to/from a mapping").
*/
struct ecm_db_connection_instance *from_next; /* Next connection made from the same mapping */
struct ecm_db_connection_instance *from_prev; /* Previous connection made from the same mapping */
struct ecm_db_connection_instance *to_next; /* Next connection made to the same mapping */
struct ecm_db_connection_instance *to_prev; /* Previous connection made to the same mapping */
struct ecm_db_connection_instance *from_nat_next; /* Next connection made from the same mapping */
struct ecm_db_connection_instance *from_nat_prev; /* Previous connection made from the same mapping */
struct ecm_db_connection_instance *to_nat_next; /* Next connection made to the same mapping */
struct ecm_db_connection_instance *to_nat_prev; /* Previous connection made to the same mapping */
/*
* Connection endpoint interface
* GGG TODO Deprecated - use interface lists instead.
* To be removed when interface heirarchies are implemented to provide the same functionality.
*/
struct ecm_db_connection_instance *iface_from_next; /* Next connection made from the same interface */
struct ecm_db_connection_instance *iface_from_prev; /* Previous connection made from the same interface */
struct ecm_db_connection_instance *iface_to_next; /* Next connection made to the same interface */
struct ecm_db_connection_instance *iface_to_prev; /* Previous connection made to the same interface */
/*
* Connection endpoint interface for NAT purposes
* NOTE: For non-NAT connections these would be identical to the endpoint interface.
* GGG TODO Deprecated - use interface lists instead.
* To be removed when interface heirarchies are implemented to provide the same functionality.
*/
struct ecm_db_connection_instance *iface_from_nat_next; /* Next connection made from the same interface */
struct ecm_db_connection_instance *iface_from_nat_prev; /* Previous connection made from the same interface */
struct ecm_db_connection_instance *iface_to_nat_next; /* Next connection made to the same interface */
struct ecm_db_connection_instance *iface_to_nat_prev; /* Previous connection made to the same interface */
/*
* As well as keeping a reference to the node which this connection uses the nodes
* also keep lists of connections made from/to them.
*/
struct ecm_db_connection_instance *node_from_next; /* Next connection in the nodes from_connections list */
struct ecm_db_connection_instance *node_from_prev; /* Prev connection in the nodes from_connections list */
struct ecm_db_connection_instance *node_to_next; /* Next connection in the nodes to_connections list */
struct ecm_db_connection_instance *node_to_prev; /* Prev connection in the nodes to_connections list */
struct ecm_db_connection_instance *node_from_nat_next; /* Next connection in the nodes from_nat_connections list */
struct ecm_db_connection_instance *node_from_nat_prev; /* Prev connection in the nodes from_nat_connections list */
struct ecm_db_connection_instance *node_to_nat_next; /* Next connection in the nodes to_nat_connections list */
struct ecm_db_connection_instance *node_to_nat_prev; /* Prev connection in the nodes to_nat_connections list */
#endif
/*
* From / To interfaces list
*/
struct ecm_db_iface_instance *from_interfaces[ECM_DB_IFACE_HEIRARCHY_MAX];
/* The outermost to innnermost interface this connection is using in the from path.
* Relationships are recorded from [ECM_DB_IFACE_HEIRARCHY_MAX - 1] to [0]
*/
int32_t from_interface_first; /* The index of the first interface in the list */
bool from_interface_set; /* True when a list has been set - even if there is NO list, it's still deliberately set that way. */
struct ecm_db_iface_instance *to_interfaces[ECM_DB_IFACE_HEIRARCHY_MAX];
/* The outermost to innnermost interface this connection is using in the to path */
int32_t to_interface_first; /* The index of the first interface in the list */
bool to_interface_set; /* True when a list has been set - even if there is NO list, it's still deliberately set that way. */
/*
* From / To NAT interfaces list
* GGG TODO Not sure if NAT interface lists are necessary or appropriate or practical.
* Needs to be assessed if it gives any clear benefit and possibly remove these if not.
*/
struct ecm_db_iface_instance *from_nat_interfaces[ECM_DB_IFACE_HEIRARCHY_MAX];
/* The outermost to innnermost interface this connection is using in the from path.
* Relationships are recorded from [ECM_DB_IFACE_HEIRARCHY_MAX - 1] to [0]
*/
int32_t from_nat_interface_first; /* The index of the first interface in the list */
bool from_nat_interface_set; /* True when a list has been set - even if there is NO list, it's still deliberately set that way. */
struct ecm_db_iface_instance *to_nat_interfaces[ECM_DB_IFACE_HEIRARCHY_MAX];
/* The outermost to innnermost interface this connection is using in the to path */
int32_t to_nat_interface_first; /* The index of the first interface in the list */
bool to_nat_interface_set; /* True when a list has been set - even if there is NO list, it's still deliberately set that way. */
#ifdef ECM_MULTICAST_ENABLE
/*
* Destination Multicast interfaces list
*/
struct ecm_db_iface_instance *to_mcast_interfaces;
/* The outermost to innnermost interfaces this connection is using in multicast path.
* The size of the buffer allocated for the to_mcast_interfaces heirarchies is as large as
* sizeof(struct ecm_db_iface_instance *) * ECM_DB_MULTICAST_IF_MAX * ECM_DB_IFACE_HEIRARCHY_MAX. */
int32_t to_mcast_interface_first[ECM_DB_MULTICAST_IF_MAX];
/* The indexes of the first interfaces in the destinaiton interface list */
struct ecm_db_multicast_tuple_instance *ti; /* Multicast Connection instance */
bool to_mcast_interfaces_set; /* Flag to indicate if the destination interface list is currently empty or not */
#endif
/*
* Time values in seconds
*/
struct ecm_db_timer_group_entry defunct_timer; /* Used to defunct the connection on inactivity */
/*
* Byte and packet counts
*/
uint64_t from_data_total; /* Totals of data as sent by the 'from' side of this connection */
uint64_t to_data_total; /* Totals of data as sent by the 'to' side of this connection */
uint64_t from_packet_total; /* Totals of packets as sent by the 'from' side of this connection */
uint64_t to_packet_total; /* Totals of packets as sent by the 'to' side of this connection */
uint64_t from_data_total_dropped; /* Total data sent by the 'from' side that we purposely dropped - the 'to' side has not seen this data */
uint64_t to_data_total_dropped; /* Total data sent by the 'to' side that we purposely dropped - the 'from' side has not seen this data */
uint64_t from_packet_total_dropped; /* Total packets sent by the 'from' side that we purposely dropped - the 'to' side has not seen this data */
uint64_t to_packet_total_dropped; /* Total packets sent by the 'to' side that we purposely dropped - the 'from' side has not seen this data */
/*
* Classifiers attached to this connection
*/
struct ecm_classifier_instance *assignments; /* A list of all classifiers that are still assigned to this connection.
* When a connection is created, one instance of every type of classifier is assigned to the connection.
* Classifiers are added in ascending order of priority - so the most important processes a packet last.
* Classifiers may drop out of this list (become unassigned) at any time.
*/
struct ecm_classifier_instance *assignments_by_type[ECM_CLASSIFIER_TYPES];
/* All assignments are also recorded in this array, since there can be only one of each type, this array allows
* rapid retrieval of a classifier type, saving having to iterate the assignments list.
*/
#ifdef ECM_DB_CTA_TRACK_ENABLE
struct ecm_db_connection_classifier_type_assignment type_assignment[ECM_CLASSIFIER_TYPES];
/*
* Each classifier TYPE has a list of connections that are assigned to it.
* This permits a classifier TYPE to rapidly retrieve all connections associated with it.
*/
#endif
/*
* Re-generation.
* When system or classifier state changes, affected connections may need to have their state re-generated.
* This ensures that a connection does not continue to operate on stale state which could affect the sanity of acceleration rules.
* A connection needs to be re-generated when its regen_required is > 0.
* When a re-generation is completed successfully the counter is decremented.
* The counter ensures that any further changes of state while re-generation is under way is not missed.
* While a connection needs re-generation (regen_required > 0), acceleration should not be permitted.
* It may not always be practical to flag individual connections for re-generation (time consuming with large numbers of connections).
* The "generation" is a numerical counter comparison against the global "ecm_db_connection_generation".
* This ecm_db_connection_generation can be incremented causing a numerical difference between the connections counter and this global.
* This is enough to flag that a re-generation is needed.
* Further, it is possible that re-generation may be required DURING a rule construction. Since constructing a rule
* can require lengthy non-atomic processes there needs to be a way to ensure that changes during construction of a rule are caught.
* The regen_occurances is a counter that is incremented whenever regen_required is also incremented.
* However it is never decremented. This permits the caller to obtain this count before a non-atomic procedure and then afterwards.
* If there is any change in the counter value there is a change of generation! And the operation should be aborted.
*/
bool regen_in_progress; /* The connection is under regeneration right now and is used to provide atomic re-generation in SMP */
uint16_t regen_required; /* The connection needs to be re-generated when > 0 */
uint16_t regen_occurances; /* Total number of regens required */
uint16_t generation; /* Used to detect when a re-evaluation of this connection is necessary by comparing with ecm_db_connection_generation */
uint32_t regen_success; /* Tracks how many times re-generation was successfully completed */
uint32_t regen_fail; /* Tracks how many times re-generation failed */
struct ecm_front_end_connection_instance *feci; /* Front end instance specific to this connection */
ecm_db_connection_defunct_callback_t defunct; /* Callback to be called when connection has become defunct */
ecm_db_connection_final_callback_t final; /* Callback to owner when object is destroyed */
void *arg; /* Argument returned to owner in callbacks */
uint32_t serial; /* RO: Serial number for the connection - unique for run lifetime */
uint32_t flags;
int refs; /* Integer to trap we never go negative */
#if (DEBUG_LEVEL > 0)
uint16_t magic;
#endif
};
/*
* Connection flags
*/
#define ECM_DB_CONNECTION_FLAGS_INSERTED 1 /* Connection is inserted into connection database tables */
/*
* struct ecm_db_listener_instance
* listener instances
*/
struct ecm_db_listener_instance {
struct ecm_db_listener_instance *next;
struct ecm_db_listener_instance *event_next;
uint32_t flags;
void *arg;
int refs; /* Integer to trap we never go negative */
ecm_db_mapping_final_callback_t final; /* Final callback for this instance */
ecm_db_iface_listener_added_callback_t iface_added;
ecm_db_iface_listener_removed_callback_t iface_removed;
ecm_db_node_listener_added_callback_t node_added;
ecm_db_node_listener_removed_callback_t node_removed;
ecm_db_host_listener_added_callback_t host_added;
ecm_db_host_listener_removed_callback_t host_removed;
ecm_db_mapping_listener_added_callback_t mapping_added;
ecm_db_mapping_listener_removed_callback_t mapping_removed;
ecm_db_connection_listener_added_callback_t connection_added;
ecm_db_connection_listener_removed_callback_t connection_removed;
#if (DEBUG_LEVEL > 0)
uint16_t magic;
#endif
};
/*
* Listener flags
*/
#define ECM_DB_LISTENER_FLAGS_INSERTED 1 /* Is inserted into database */
#ifdef ECM_MULTICAST_ENABLE
/*
* struct ecm_db_multicast_tuple_instance
* Tuple information for an accelerated multicast connection.
* This tuple information is further used to find an attached
* connection for the multicast flow.
*/
struct ecm_db_multicast_tuple_instance {
struct ecm_db_multicast_tuple_instance *next; /* Next instance in global list */
struct ecm_db_multicast_tuple_instance *prev; /* Previous instance in global list */
struct ecm_db_connection_instance *ci; /* Pointer to the DB Connection Instance */
uint16_t src_port; /* RO: IPv4/v6 Source Port */
uint16_t dst_port; /* RO: IPv4/v6 Destination Port */
ip_addr_t src_ip; /* RO: IPv4/v6 Source Address */
ip_addr_t grp_ip; /* RO: IPv4/v6 Multicast Group Address */
uint32_t flags; /* Flags for this instance node */
uint32_t hash_index; /* Hash index of this node */
int proto; /* RO: Protocol */
int refs; /* Integer to trap we never go negative */
#if (DEBUG_LEVEL > 0)
uint16_t magic; /* Magic value for debug */
#endif
};
#define ECM_DB_MULTICAST_TUPLE_INSTANCE_HASH_SLOTS 16
typedef uint32_t ecm_db_multicast_tuple_instance_hash_t;
/*
* Multicast connection tuple table
* This table is used to lookup a complete tuple for multicast connections
* using the multicast group address
*/
static struct ecm_db_multicast_tuple_instance *ecm_db_multicast_tuple_instance_table[ECM_DB_MULTICAST_TUPLE_INSTANCE_HASH_SLOTS];
#endif
/*
* Simple stats
*/
#define ECM_DB_PROTOCOL_COUNT 256
static int ecm_db_connection_count_by_protocol[ECM_DB_PROTOCOL_COUNT]; /* Each IP protocol has its own count */
/*
* Locking of the database - concurrency control
*/
static DEFINE_SPINLOCK(ecm_db_lock); /* Protect the table from SMP access. */
/*
* Connection state validity
* This counter is incremented whenever a general change is detected which requires re-generation of state for ALL connections.
*/
static uint16_t ecm_db_connection_generation = 0; /* Generation counter to detect when all connection state is considered stale and all must be re-generated */
/*
* Debugfs dentry object.
*/
static struct dentry *ecm_db_dentry;
/*
* Management thread control
*/
static bool ecm_db_terminate_pending = false; /* When true the user has requested termination */
/*
* ecm_db_interface_type_names[]
* Array that maps the interface type to a string
*/
static char *ecm_db_interface_type_names[ECM_DB_IFACE_TYPE_COUNT] = {
"ETHERNET",
"PPPoE",
"LINK-AGGREGATION",
"VLAN",
"BRIDGE",
"LOOPBACK",
"IPSEC_TUNNEL",
"UNKNOWN",
"SIT",
"TUNIPIP6",
"PPPoL2TPV2"
};
/*
* Random seed used during hash calculations
*/
static uint32_t ecm_db_jhash_rnd __read_mostly;
/*
* ecm_db_connection_count_get()
* Return the connection count
*/
int ecm_db_connection_count_get(void)
{
int count;
spin_lock_bh(&ecm_db_lock);
count = ecm_db_connection_count;
spin_unlock_bh(&ecm_db_lock);
return count;
}
EXPORT_SYMBOL(ecm_db_connection_count_get);
/*
* ecm_db_interface_type_to_string()
* Return a string buffer containing the type name of the interface
*/
char *ecm_db_interface_type_to_string(ecm_db_iface_type_t type)
{
DEBUG_ASSERT((type >= 0) && (type < ECM_DB_IFACE_TYPE_COUNT), "Invalid type: %d\n", type);
return ecm_db_interface_type_names[(int)type];
}
EXPORT_SYMBOL(ecm_db_interface_type_to_string);
/*
* ecm_db_connection_count_by_protocol_get()
* Return # connections for the given protocol
*/
int ecm_db_connection_count_by_protocol_get(int protocol)
{
int count;
DEBUG_ASSERT((protocol >= 0) && (protocol < ECM_DB_PROTOCOL_COUNT), "Bad protocol: %d\n", protocol);
spin_lock_bh(&ecm_db_lock);
count = ecm_db_connection_count_by_protocol[protocol];
spin_unlock_bh(&ecm_db_lock);
return count;
}
EXPORT_SYMBOL(ecm_db_connection_count_by_protocol_get);
/*
* ecm_db_iface_ae_interface_identifier_get()
* Return the accel engine interface number of this ecm interface
*/
int32_t ecm_db_iface_ae_interface_identifier_get(struct ecm_db_iface_instance *ii)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
return ii->ae_interface_identifier;
}
EXPORT_SYMBOL(ecm_db_iface_ae_interface_identifier_get);
/*
* ecm_db_iface_interface_identifier_get()
* Return the interface number of this ecm interface
*/
int32_t ecm_db_iface_interface_identifier_get(struct ecm_db_iface_instance *ii)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
return ii->interface_identifier;
}
EXPORT_SYMBOL(ecm_db_iface_interface_identifier_get);
/*
* ecm_db_iface_mtu_reset()
* Reset the mtu
*/
int32_t ecm_db_iface_mtu_reset(struct ecm_db_iface_instance *ii, int32_t mtu)
{
int32_t mtu_old;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
spin_lock_bh(&ecm_db_lock);
mtu_old = ii->mtu;
ii->mtu = mtu;
spin_unlock_bh(&ecm_db_lock);
DEBUG_INFO("%p: Mtu change from %d to %d\n", ii, mtu_old, mtu);
return mtu_old;
}
EXPORT_SYMBOL(ecm_db_iface_mtu_reset);
/*
* ecm_db_connection_front_end_get_and_ref()
* Return ref to the front end instance of the connection
*/
struct ecm_front_end_connection_instance *ecm_db_connection_front_end_get_and_ref(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
ci->feci->ref(ci->feci);
return ci->feci;
}
EXPORT_SYMBOL(ecm_db_connection_front_end_get_and_ref);
/*
* ecm_db_connection_defunct_callback()
* Invoked by the expiration of the defunct_timer contained in a connection instance
*/
static void ecm_db_connection_defunct_callback(void *arg)
{
struct ecm_db_connection_instance *ci = (struct ecm_db_connection_instance *)arg;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
DEBUG_INFO("%p: defunct timer expired\n", ci);
if (ci->defunct) {
ci->defunct(ci->feci);
}
ecm_db_connection_deref(ci);
}
/*
* ecm_db_connection_defunct_timer_reset()
* Set/change the timer group associated with a connection. Returns false if the connection has become defunct and the new group cannot be set for that reason.
*/
bool ecm_db_connection_defunct_timer_reset(struct ecm_db_connection_instance *ci, ecm_db_timer_group_t tg)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
return ecm_db_timer_group_entry_reset(&ci->defunct_timer, tg);
}
EXPORT_SYMBOL(ecm_db_connection_defunct_timer_reset);
/*
* ecm_db_connection_defunct_timer_touch()
* Update the connections defunct timer to stop it timing out. Returns false if the connection defunct timer has expired.
*/
bool ecm_db_connection_defunct_timer_touch(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
return ecm_db_timer_group_entry_touch(&ci->defunct_timer);
}
EXPORT_SYMBOL(ecm_db_connection_defunct_timer_touch);
/*
* ecm_db_connection_timer_group_get()
* Return the timer group id
*/
ecm_db_timer_group_t ecm_db_connection_timer_group_get(struct ecm_db_connection_instance *ci)
{
ecm_db_timer_group_t tg;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
tg = ci->defunct_timer.group;
spin_unlock_bh(&ecm_db_lock);
return tg;
}
EXPORT_SYMBOL(ecm_db_connection_timer_group_get);
/*
* ecm_db_connection_make_defunct()
* Make connection defunct.
*/
void ecm_db_connection_make_defunct(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
if (ci->defunct) {
ci->defunct(ci->feci);
}
if (ecm_db_timer_group_entry_remove(&ci->defunct_timer)) {
ecm_db_connection_deref(ci);
}
}
EXPORT_SYMBOL(ecm_db_connection_make_defunct);
/*
* ecm_db_connection_data_totals_update()
* Update the total data (and packets) sent/received by the given host
*/
void ecm_db_connection_data_totals_update(struct ecm_db_connection_instance *ci, bool is_from, uint64_t size, uint64_t packets)
{
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
if (is_from) {
/*
* Update totals sent by the FROM side of connection
*/
ci->from_data_total += size;
ci->from_packet_total += packets;
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
ci->mapping_from->from_data_total += size;
ci->mapping_from->host->from_data_total += size;
ci->from_node->from_data_total += size;
ci->mapping_from->from_packet_total += packets;
ci->mapping_from->host->from_packet_total += packets;
ci->from_node->from_packet_total += packets;
/*
* Data from the host is essentially TO the interface on which the host is reachable
*/
for (i = ci->from_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
ci->from_interfaces[i]->to_data_total += size;
ci->from_interfaces[i]->to_packet_total += packets;
}
/*
* Update totals sent TO the other side of the connection
*/
ci->mapping_to->to_data_total += size;
ci->mapping_to->host->to_data_total += size;
ci->to_node->to_data_total += size;
ci->mapping_to->to_packet_total += packets;
ci->mapping_to->host->to_packet_total += packets;
ci->to_node->to_packet_total += packets;
/*
* Sending to the other side means FROM the interface we reach that host
*/
for (i = ci->to_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
ci->to_interfaces[i]->from_data_total += size;
ci->to_interfaces[i]->from_packet_total += packets;
}
#endif
spin_unlock_bh(&ecm_db_lock);
return;
}
/*
* Update totals sent by the TO side of this connection
*/
ci->to_data_total += size;
ci->to_packet_total += packets;
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
ci->mapping_to->from_data_total += size;
ci->mapping_to->host->from_data_total += size;
ci->to_node->from_data_total += size;
ci->mapping_to->from_packet_total += packets;
ci->mapping_to->host->from_packet_total += packets;
ci->to_node->from_packet_total += packets;
/*
* Data from the host is essentially TO the interface on which the host is reachable
*/
for (i = ci->to_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
ci->to_interfaces[i]->to_data_total += size;
ci->to_interfaces[i]->to_packet_total += packets;
}
/*
* Update totals sent TO the other side of the connection
*/
ci->mapping_from->to_data_total += size;
ci->mapping_from->host->to_data_total += size;
ci->from_node->to_data_total += size;
ci->mapping_from->to_packet_total += packets;
ci->mapping_from->host->to_packet_total += packets;
ci->from_node->to_packet_total += packets;
/*
* Sending to the other side means FROM the interface we reach that host
*/
for (i = ci->from_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
ci->from_interfaces[i]->from_data_total += size;
ci->from_interfaces[i]->from_packet_total += packets;
}
#endif
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_connection_data_totals_update);
#ifdef ECM_MULTICAST_ENABLE
/*
* ecm_db_multicast_connection_data_totals_update()
* Update the total bytes and packets sent/received by the multicast connection
* TODO: This function is almost similar to unicast connection_data_totals_update() except few
* lines of code. The next merge should have a common logic for both unicast and multicast.
*/
void ecm_db_multicast_connection_data_totals_update(struct ecm_db_connection_instance *ci, bool is_from, uint64_t size, uint64_t packets)
{
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
if (is_from) {
/*
* Update totals sent by the FROM side of connection
*/
ci->from_data_total += size;
ci->from_packet_total += packets;
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
ci->mapping_from->from_data_total += size;
ci->mapping_from->host->from_data_total += size;
ci->from_node->from_data_total += size;
ci->mapping_from->from_packet_total += packets;
ci->mapping_from->host->from_packet_total += packets;
ci->from_node->from_packet_total += packets;
/*
* Data from the host is essentially TO the interface on which the host is reachable
*/
for (i = ci->from_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
ci->from_interfaces[i]->to_data_total += size;
ci->from_interfaces[i]->to_packet_total += packets;
}
/*
* Update totals sent TO the other side of the connection
*/
ci->mapping_to->to_data_total += size;
ci->mapping_to->host->to_data_total += size;
ci->to_node->to_data_total += size;
ci->mapping_to->to_packet_total += packets;
ci->mapping_to->host->to_packet_total += packets;
ci->to_node->to_packet_total += packets;
#endif
spin_unlock_bh(&ecm_db_lock);
return;
}
/*
* Update totals sent by the TO side of this connection
*/
ci->to_data_total += size;
ci->to_packet_total += packets;
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
ci->mapping_to->from_data_total += size;
ci->mapping_to->host->from_data_total += size;
ci->to_node->from_data_total += size;
ci->mapping_to->from_packet_total += packets;
ci->mapping_to->host->from_packet_total += packets;
ci->to_node->from_packet_total += packets;
/*
* Update totals sent TO the other side of the connection
*/
ci->mapping_from->to_data_total += size;
ci->mapping_from->host->to_data_total += size;
ci->from_node->to_data_total += size;
ci->mapping_from->to_packet_total += packets;
ci->mapping_from->host->to_packet_total += packets;
ci->from_node->to_packet_total += packets;
/*
* Sending to the other side means FROM the interface we reach that host
*/
for (i = ci->from_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
ci->from_interfaces[i]->from_data_total += size;
ci->from_interfaces[i]->from_packet_total += packets;
}
#endif
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_multicast_connection_data_totals_update);
/*
* ecm_db_multicast_connection_interface_heirarchy_stats_update()
* Traverse through the multicast destination interface heirarchy and update the stats (data and packets).
*/
void ecm_db_multicast_connection_interface_heirarchy_stats_update(struct ecm_db_connection_instance *ci, uint64_t size, uint64_t packets)
{
struct ecm_db_iface_instance *to_mc_ifaces;
struct ecm_db_iface_instance *ii;
struct ecm_db_iface_instance **ifaces;
struct ecm_db_iface_instance *ii_temp;
int32_t *to_mc_ifaces_first;
int heirarchy_index;
int ret;
ret = ecm_db_multicast_connection_to_interfaces_get_and_ref_all(ci, &to_mc_ifaces, &to_mc_ifaces_first);
if (ret == 0) {
DEBUG_WARN("%p: no interfaces in to_multicast_interfaces list!\n", ci);
return;
}
spin_lock_bh(&ecm_db_lock);
for (heirarchy_index = 0; heirarchy_index < ECM_DB_MULTICAST_IF_MAX; heirarchy_index++) {
if (to_mc_ifaces_first[heirarchy_index] < ECM_DB_IFACE_HEIRARCHY_MAX) {
ii_temp = ecm_db_multicast_if_heirarchy_get(to_mc_ifaces, heirarchy_index);
ii_temp = ecm_db_multicast_if_instance_get_at_index(ii_temp, ECM_DB_IFACE_HEIRARCHY_MAX - 1);
ifaces = (struct ecm_db_iface_instance **)ii_temp;
ii = *ifaces;
ii->to_data_total += size;
ii->to_packet_total += packets;
}
}
spin_unlock_bh(&ecm_db_lock);
ecm_db_multicast_connection_to_interfaces_deref_all(to_mc_ifaces, to_mc_ifaces_first);
}
EXPORT_SYMBOL(ecm_db_multicast_connection_interface_heirarchy_stats_update);
#endif
/*
* ecm_db_connection_data_totals_update_dropped()
* Update the total data (and packets) sent by the given host but which we dropped
*/
void ecm_db_connection_data_totals_update_dropped(struct ecm_db_connection_instance *ci, bool is_from, uint64_t size, uint64_t packets)
{
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
if (is_from) {
/*
* Update dropped totals sent by the FROM side
*/
spin_lock_bh(&ecm_db_lock);
ci->from_data_total_dropped += size;
ci->from_packet_total_dropped += packets;
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
ci->mapping_from->from_data_total_dropped += size;
ci->mapping_from->host->from_data_total_dropped += size;
ci->from_node->from_data_total_dropped += size;
ci->mapping_from->from_packet_total_dropped += packets;
ci->mapping_from->host->from_packet_total_dropped += packets;
ci->from_node->from_packet_total_dropped += packets;
/*
* Data from the host is essentially TO the interface on which the host is reachable
*/
for (i = ci->from_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
ci->from_interfaces[i]->to_data_total_dropped += size;
ci->from_interfaces[i]->to_packet_total_dropped += packets;
}
#endif
spin_unlock_bh(&ecm_db_lock);
return;
}
/*
* Update dropped totals sent by the TO side of this connection
*/
spin_lock_bh(&ecm_db_lock);
ci->to_data_total_dropped += size;
ci->to_packet_total_dropped += packets;
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
ci->mapping_to->from_data_total_dropped += size;
ci->mapping_to->host->from_data_total_dropped += size;
ci->to_node->from_data_total_dropped += size;
ci->mapping_to->from_packet_total_dropped += packets;
ci->mapping_to->host->from_packet_total_dropped += packets;
ci->to_node->from_packet_total_dropped += packets;
/*
* Data from the host is essentially TO the interface on which the host is reachable
*/
for (i = ci->to_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
ci->to_interfaces[i]->to_data_total_dropped += size;
ci->to_interfaces[i]->to_packet_total_dropped += packets;
}
#endif
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_connection_data_totals_update_dropped);
/*
* ecm_db_connection_data_stats_get()
* Return data stats for the instance
*/
void ecm_db_connection_data_stats_get(struct ecm_db_connection_instance *ci, uint64_t *from_data_total, uint64_t *to_data_total,
uint64_t *from_packet_total, uint64_t *to_packet_total,
uint64_t *from_data_total_dropped, uint64_t *to_data_total_dropped,
uint64_t *from_packet_total_dropped, uint64_t *to_packet_total_dropped)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
if (from_data_total) {
*from_data_total = ci->from_data_total;
}
if (to_data_total) {
*to_data_total = ci->to_data_total;
}
if (from_packet_total) {
*from_packet_total = ci->from_packet_total;
}
if (to_packet_total) {
*to_packet_total = ci->to_packet_total;
}
if (from_data_total_dropped) {
*from_data_total_dropped = ci->from_data_total_dropped;
}
if (to_data_total_dropped) {
*to_data_total_dropped = ci->to_data_total_dropped;
}
if (from_packet_total_dropped) {
*from_packet_total_dropped = ci->from_packet_total_dropped;
}
if (to_packet_total_dropped) {
*to_packet_total_dropped = ci->to_packet_total_dropped;
}
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_connection_data_stats_get);
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
/*
* ecm_db_mapping_data_stats_get()
* Return data stats for the instance
*/
void ecm_db_mapping_data_stats_get(struct ecm_db_mapping_instance *mi, uint64_t *from_data_total, uint64_t *to_data_total,
uint64_t *from_packet_total, uint64_t *to_packet_total,
uint64_t *from_data_total_dropped, uint64_t *to_data_total_dropped,
uint64_t *from_packet_total_dropped, uint64_t *to_packet_total_dropped)
{
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", mi);
spin_lock_bh(&ecm_db_lock);
if (from_data_total) {
*from_data_total = mi->from_data_total;
}
if (to_data_total) {
*to_data_total = mi->to_data_total;
}
if (from_packet_total) {
*from_packet_total = mi->from_packet_total;
}
if (to_packet_total) {
*to_packet_total = mi->to_packet_total;
}
if (from_data_total_dropped) {
*from_data_total_dropped = mi->from_data_total_dropped;
}
if (to_data_total_dropped) {
*to_data_total_dropped = mi->to_data_total_dropped;
}
if (from_packet_total_dropped) {
*from_packet_total_dropped = mi->from_packet_total_dropped;
}
if (to_packet_total_dropped) {
*to_packet_total_dropped = mi->to_packet_total_dropped;
}
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_mapping_data_stats_get);
#endif
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
/*
* ecm_db_host_data_stats_get()
* Return data stats for the instance
*/
void ecm_db_host_data_stats_get(struct ecm_db_host_instance *hi, uint64_t *from_data_total, uint64_t *to_data_total,
uint64_t *from_packet_total, uint64_t *to_packet_total,
uint64_t *from_data_total_dropped, uint64_t *to_data_total_dropped,
uint64_t *from_packet_total_dropped, uint64_t *to_packet_total_dropped)
{
DEBUG_CHECK_MAGIC(hi, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed", hi);
spin_lock_bh(&ecm_db_lock);
if (from_data_total) {
*from_data_total = hi->from_data_total;
}
if (to_data_total) {
*to_data_total = hi->to_data_total;
}
if (from_packet_total) {
*from_packet_total = hi->from_packet_total;
}
if (to_packet_total) {
*to_packet_total = hi->to_packet_total;
}
if (from_data_total_dropped) {
*from_data_total_dropped = hi->from_data_total_dropped;
}
if (to_data_total_dropped) {
*to_data_total_dropped = hi->to_data_total_dropped;
}
if (from_packet_total_dropped) {
*from_packet_total_dropped = hi->from_packet_total_dropped;
}
if (to_packet_total_dropped) {
*to_packet_total_dropped = hi->to_packet_total_dropped;
}
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_host_data_stats_get);
#endif
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
/*
* ecm_db_node_data_stats_get()
* Return data stats for the instance
*/
void ecm_db_node_data_stats_get(struct ecm_db_node_instance *ni, uint64_t *from_data_total, uint64_t *to_data_total,
uint64_t *from_packet_total, uint64_t *to_packet_total,
uint64_t *from_data_total_dropped, uint64_t *to_data_total_dropped,
uint64_t *from_packet_total_dropped, uint64_t *to_packet_total_dropped)
{
DEBUG_CHECK_MAGIC(ni, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed", ni);
spin_lock_bh(&ecm_db_lock);
if (from_data_total) {
*from_data_total = ni->from_data_total;
}
if (to_data_total) {
*to_data_total = ni->to_data_total;
}
if (from_packet_total) {
*from_packet_total = ni->from_packet_total;
}
if (to_packet_total) {
*to_packet_total = ni->to_packet_total;
}
if (from_data_total_dropped) {
*from_data_total_dropped = ni->from_data_total_dropped;
}
if (to_data_total_dropped) {
*to_data_total_dropped = ni->to_data_total_dropped;
}
if (from_packet_total_dropped) {
*from_packet_total_dropped = ni->from_packet_total_dropped;
}
if (to_packet_total_dropped) {
*to_packet_total_dropped = ni->to_packet_total_dropped;
}
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_node_data_stats_get);
#endif
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
/*
* ecm_db_iface_data_stats_get()
* Return data stats for the instance
*/
void ecm_db_iface_data_stats_get(struct ecm_db_iface_instance *ii, uint64_t *from_data_total, uint64_t *to_data_total,
uint64_t *from_packet_total, uint64_t *to_packet_total,
uint64_t *from_data_total_dropped, uint64_t *to_data_total_dropped,
uint64_t *from_packet_total_dropped, uint64_t *to_packet_total_dropped)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
spin_lock_bh(&ecm_db_lock);
if (from_data_total) {
*from_data_total = ii->from_data_total;
}
if (to_data_total) {
*to_data_total = ii->to_data_total;
}
if (from_packet_total) {
*from_packet_total = ii->from_packet_total;
}
if (to_packet_total) {
*to_packet_total = ii->to_packet_total;
}
if (from_data_total_dropped) {
*from_data_total_dropped = ii->from_data_total_dropped;
}
if (to_data_total_dropped) {
*to_data_total_dropped = ii->to_data_total_dropped;
}
if (from_packet_total_dropped) {
*from_packet_total_dropped = ii->from_packet_total_dropped;
}
if (to_packet_total_dropped) {
*to_packet_total_dropped = ii->to_packet_total_dropped;
}
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_iface_data_stats_get);
#endif
/*
* ecm_db_connection_serial_get()
* Return serial
*/
uint32_t ecm_db_connection_serial_get(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
return ci->serial;
}
EXPORT_SYMBOL(ecm_db_connection_serial_get);
/*
* ecm_db_connection_from_address_get()
* Return ip address address
*/
void ecm_db_connection_from_address_get(struct ecm_db_connection_instance *ci, ip_addr_t addr)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
DEBUG_CHECK_MAGIC(ci->mapping_from, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", ci->mapping_from);
DEBUG_CHECK_MAGIC(ci->mapping_from->host, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed", ci->mapping_from->host);
ECM_IP_ADDR_COPY(addr, ci->mapping_from->host->address);
}
EXPORT_SYMBOL(ecm_db_connection_from_address_get);
/*
* ecm_db_connection_from_address_nat_get()
* Return NAT ip address address
*/
void ecm_db_connection_from_address_nat_get(struct ecm_db_connection_instance *ci, ip_addr_t addr)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
DEBUG_CHECK_MAGIC(ci->mapping_from, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", ci->mapping_from);
DEBUG_CHECK_MAGIC(ci->mapping_from->host, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed", ci->mapping_from->host);
ECM_IP_ADDR_COPY(addr, ci->mapping_nat_from->host->address);
}
EXPORT_SYMBOL(ecm_db_connection_from_address_nat_get);
/*
* ecm_db_connection_to_address_get()
* Return ip address address
*/
void ecm_db_connection_to_address_get(struct ecm_db_connection_instance *ci, ip_addr_t addr)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
DEBUG_CHECK_MAGIC(ci->mapping_to, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", ci->mapping_to);
DEBUG_CHECK_MAGIC(ci->mapping_to->host, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed", ci->mapping_to->host);
ECM_IP_ADDR_COPY(addr, ci->mapping_to->host->address);
}
EXPORT_SYMBOL(ecm_db_connection_to_address_get);
/*
* ecm_db_connection_to_address_nat_get()
* Return NAT ip address address
*/
void ecm_db_connection_to_address_nat_get(struct ecm_db_connection_instance *ci, ip_addr_t addr)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
DEBUG_CHECK_MAGIC(ci->mapping_to, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", ci->mapping_to);
DEBUG_CHECK_MAGIC(ci->mapping_to->host, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed", ci->mapping_to->host);
ECM_IP_ADDR_COPY(addr, ci->mapping_nat_to->host->address);
}
EXPORT_SYMBOL(ecm_db_connection_to_address_nat_get);
/*
* ecm_db_connection_to_port_get()
* Return port
*/
int ecm_db_connection_to_port_get(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
DEBUG_CHECK_MAGIC(ci->mapping_to, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", ci->mapping_to);
return ci->mapping_to->port;
}
EXPORT_SYMBOL(ecm_db_connection_to_port_get);
/*
* ecm_db_connection_to_port_nat_get()
* Return port
*/
int ecm_db_connection_to_port_nat_get(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
DEBUG_CHECK_MAGIC(ci->mapping_to, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", ci->mapping_to);
return ci->mapping_nat_to->port;
}
EXPORT_SYMBOL(ecm_db_connection_to_port_nat_get);
/*
* ecm_db_connection_from_port_get()
* Return port
*/
int ecm_db_connection_from_port_get(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
DEBUG_CHECK_MAGIC(ci->mapping_from, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", ci->mapping_from);
return ci->mapping_from->port;
}
EXPORT_SYMBOL(ecm_db_connection_from_port_get);
/*
* ecm_db_connection_from_port_nat_get()
* Return port
*/
int ecm_db_connection_from_port_nat_get(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
DEBUG_CHECK_MAGIC(ci->mapping_from, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", ci->mapping_from);
return ci->mapping_nat_from->port;
}
EXPORT_SYMBOL(ecm_db_connection_from_port_nat_get);
/*
* ecm_db_connection_to_node_address_get()
* Return address of the node used when sending packets to the 'to' side.
*/
void ecm_db_connection_to_node_address_get(struct ecm_db_connection_instance *ci, uint8_t *address_buffer)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
memcpy(address_buffer, ci->to_node->address, ETH_ALEN);
}
EXPORT_SYMBOL(ecm_db_connection_to_node_address_get);
/*
* ecm_db_connection_from_node_address_get()
* Return address of the node used when sending packets to the 'from' side.
*/
void ecm_db_connection_from_node_address_get(struct ecm_db_connection_instance *ci, uint8_t *address_buffer)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
memcpy(address_buffer, ci->from_node->address, ETH_ALEN);
}
EXPORT_SYMBOL(ecm_db_connection_from_node_address_get);
/*
* ecm_db_connection_to_nat_node_address_get()
* Return address of the node used when sending packets to the 'to' NAT side.
*/
void ecm_db_connection_to_nat_node_address_get(struct ecm_db_connection_instance *ci, uint8_t *address_buffer)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
memcpy(address_buffer, ci->to_nat_node->address, ETH_ALEN);
}
EXPORT_SYMBOL(ecm_db_connection_to_nat_node_address_get);
/*
* ecm_db_connection_from_nat_node_address_get()
* Return address of the node used when sending packets to the 'from' NAT side.
*/
void ecm_db_connection_from_nat_node_address_get(struct ecm_db_connection_instance *ci, uint8_t *address_buffer)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
memcpy(address_buffer, ci->from_nat_node->address, ETH_ALEN);
}
EXPORT_SYMBOL(ecm_db_connection_from_nat_node_address_get);
/*
* ecm_db_connection_to_iface_name_get()
* Return name of interface on which the 'to' side may be reached
*/
void ecm_db_connection_to_iface_name_get(struct ecm_db_connection_instance *ci, char *name_buffer)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
strcpy(name_buffer, ci->to_node->iface->name);
}
EXPORT_SYMBOL(ecm_db_connection_to_iface_name_get);
/*
* ecm_db_connection_from_iface_name_get()
* Return name of interface on which the 'from' side may be reached
*/
void ecm_db_connection_from_iface_name_get(struct ecm_db_connection_instance *ci, char *name_buffer)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
strcpy(name_buffer, ci->from_node->iface->name);
}
EXPORT_SYMBOL(ecm_db_connection_from_iface_name_get);
/*
* ecm_db_connection_to_iface_mtu_get()
* Return MTU of interface on which the 'to' side may be reached
*/
int ecm_db_connection_to_iface_mtu_get(struct ecm_db_connection_instance *ci)
{
int mtu;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
mtu = ci->to_node->iface->mtu;
spin_unlock_bh(&ecm_db_lock);
return mtu;
}
EXPORT_SYMBOL(ecm_db_connection_to_iface_mtu_get);
/*
* ecm_db_connection_to_iface_type_get()
* Return type of interface on which the 'to' side may be reached
*/
ecm_db_iface_type_t ecm_db_connection_to_iface_type_get(struct ecm_db_connection_instance *ci)
{
ecm_db_iface_type_t type;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
type = ci->to_node->iface->type;
spin_unlock_bh(&ecm_db_lock);
return type;
}
EXPORT_SYMBOL(ecm_db_connection_to_iface_type_get);
/*
* ecm_db_connection_from_iface_mtu_get()
* Return MTU of interface on which the 'from' side may be reached
*/
int ecm_db_connection_from_iface_mtu_get(struct ecm_db_connection_instance *ci)
{
int mtu;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
mtu = ci->from_node->iface->mtu;
spin_unlock_bh(&ecm_db_lock);
return mtu;
}
EXPORT_SYMBOL(ecm_db_connection_from_iface_mtu_get);
/*
* ecm_db_connection_from_iface_type_get()
* Return type of interface on which the 'from' side may be reached
*/
ecm_db_iface_type_t ecm_db_connection_from_iface_type_get(struct ecm_db_connection_instance *ci)
{
ecm_db_iface_type_t type;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
type = ci->from_node->iface->type;
spin_unlock_bh(&ecm_db_lock);
return type;
}
EXPORT_SYMBOL(ecm_db_connection_from_iface_type_get);
/*
* ecm_db_connection_iface_type_get()
* Return type of interface
*/
ecm_db_iface_type_t ecm_db_connection_iface_type_get(struct ecm_db_iface_instance *ii)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
return ii->type;
}
EXPORT_SYMBOL(ecm_db_connection_iface_type_get);
/*
* ecm_db_connection_regeneration_occurrances_get()
* Get the number of regeneration occurrances that have occurred since the connection was created.
*/
uint16_t ecm_db_connection_regeneration_occurrances_get(struct ecm_db_connection_instance *ci)
{
uint16_t occurances;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
occurances = ci->regen_occurances;
spin_unlock_bh(&ecm_db_lock);
return occurances;
}
EXPORT_SYMBOL(ecm_db_connection_regeneration_occurrances_get);
/*
* ecm_db_conection_regeneration_completed()
* Re-generation was completed successfully
*/
void ecm_db_conection_regeneration_completed(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
DEBUG_ASSERT(ci->regen_in_progress, "%p: Bad call", ci);
DEBUG_ASSERT(ci->regen_required > 0, "%p: Bad call", ci);
/*
* Decrement the required counter by 1.
* This may mean that regeneration is still required due to another change occuring _during_ re-generation.
*/
ci->regen_required--;
ci->regen_in_progress = false;
ci->regen_success++;
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_conection_regeneration_completed);
/*
* ecm_db_conection_regeneration_failed()
* Re-generation failed
*/
void ecm_db_conection_regeneration_failed(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
DEBUG_ASSERT(ci->regen_in_progress, "%p: Bad call", ci);
DEBUG_ASSERT(ci->regen_required > 0, "%p: Bad call", ci);
/*
* Re-generation is no longer in progress BUT we leave the regen
* counter as it is so as to indicate re-generation is still needed
*/
ci->regen_in_progress = false;
ci->regen_fail++;
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_conection_regeneration_failed);
/*
* ecm_db_connection_regeneration_required_check()
* Returns true if the connection needs to be re-generated.
*
* If re-generation is needed this will mark the connection to indicate that re-generation is needed AND in progress.
* If the return code is TRUE the caller MUST handle the re-generation.
* Upon re-generation completion you must call ecm_db_conection_regeneration_completed() or ecm_db_conection_regeneration_failed().
*/
bool ecm_db_connection_regeneration_required_check(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
/*
* Check the global generation counter for changes
*/
spin_lock_bh(&ecm_db_lock);
if (ci->generation != ecm_db_connection_generation) {
/*
* Re-generation is needed
*/
ci->regen_occurances++;
ci->regen_required++;
/*
* Record that we have seen this change
*/
ci->generation = ecm_db_connection_generation;
}
/*
* If re-generation is in progress then something is handling re-generation already
* so we tell the caller that it cannot handle re-generation.
*/
if (ci->regen_in_progress) {
spin_unlock_bh(&ecm_db_lock);
return false;
}
/*
* Is re-generation required?
*/
if (ci->regen_required == 0) {
spin_unlock_bh(&ecm_db_lock);
return false;
}
/*
* Flag that re-generation is in progress and tell the caller to handle re-generation
*/
ci->regen_in_progress = true;
spin_unlock_bh(&ecm_db_lock);
return true;
}
EXPORT_SYMBOL(ecm_db_connection_regeneration_required_check);
/*
* ecm_db_connection_regeneration_required_peek()
* Returns true if the connection needs to be regenerated.
*
* NOTE: The caller MUST NOT handle re-generation, the caller may use this indication
* to determine the sanity of the connection state and whether acceleration is permitted.
*/
bool ecm_db_connection_regeneration_required_peek(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
/*
* Check the global generation counter for changes (record any change now)
*/
if (ci->generation != ecm_db_connection_generation) {
/*
* Re-generation is needed, flag the connection as needing re-generation now.
*/
ci->regen_occurances++;
ci->regen_required++;
/*
* Record that we have seen this change
*/
ci->generation = ecm_db_connection_generation;
}
if (ci->regen_required == 0) {
spin_unlock_bh(&ecm_db_lock);
return false;
}
spin_unlock_bh(&ecm_db_lock);
return true;
}
EXPORT_SYMBOL(ecm_db_connection_regeneration_required_peek);
/*
* ecm_db_connection_regeneration_needed()
* Cause a specific connection to require re-generation
*
* NOTE: This only flags that re-generation is needed.
* The connection will typically be re-generated when ecm_db_connection_regeneration_required_check() is invoked.
*/
void ecm_db_connection_regeneration_needed(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
ci->regen_occurances++;
ci->regen_required++;
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_connection_regeneration_needed);
/*
* ecm_db_regeneration_needed()
* Bump the global generation index to cause a re-generation of all connections state.
*/
void ecm_db_regeneration_needed(void)
{
spin_lock_bh(&ecm_db_lock);
ecm_db_connection_generation++;
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_regeneration_needed);
/*
* ecm_db_connection_regenerate()
* Re-generate a specific connection
*/
void ecm_db_connection_regenerate(struct ecm_db_connection_instance *ci)
{
struct ecm_front_end_connection_instance *feci;
DEBUG_TRACE("Regenerate connection: %p\n", ci);
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
/*
* Notify front end to regenerate a connection.
*/
feci = ecm_db_connection_front_end_get_and_ref(ci);
feci->regenerate(feci, ci);
feci->deref(feci);
}
EXPORT_SYMBOL(ecm_db_connection_regenerate);
/*
* ecm_db_connection_direction_get()
* Return direction of the connection.
*
* NOTE: an EGRESS connection means that packets being sent to mapping_to should have qos applied.
* INGRESS means that packets being sent to mapping_from should have qos applied.
*/
ecm_db_direction_t ecm_db_connection_direction_get(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
return ci->direction;
}
EXPORT_SYMBOL(ecm_db_connection_direction_get);
/*
* ecm_db_mapping_port_count_get()
* Return port count stats for a mapping.
*/
void ecm_db_mapping_port_count_get(struct ecm_db_mapping_instance *mi,
int *tcp_from, int *tcp_to, int *udp_from, int *udp_to, int *from, int *to,
int *tcp_nat_from, int *tcp_nat_to, int *udp_nat_from, int *udp_nat_to, int *nat_from, int *nat_to)
{
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", mi);
spin_lock_bh(&ecm_db_lock);
*tcp_from = mi->tcp_from;
*tcp_to = mi->tcp_to;
*udp_from = mi->udp_from;
*udp_to = mi->udp_to;
*from = mi->from;
*to = mi->to;
*tcp_nat_from = mi->tcp_nat_from;
*tcp_nat_to = mi->tcp_nat_to;
*udp_nat_from = mi->udp_nat_from;
*udp_nat_to = mi->udp_nat_to;
*nat_from = mi->nat_from;
*nat_to = mi->nat_to;
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_mapping_port_count_get);
/*
* ecm_db_connection_is_routed_get()
* Return whether connection is a routed path or not
*/
bool ecm_db_connection_is_routed_get(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
return ci->is_routed;
}
EXPORT_SYMBOL(ecm_db_connection_is_routed_get);
/*
* ecm_db_connection_protocol_get()
* Return protocol of connection
*/
int ecm_db_connection_protocol_get(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
return ci->protocol;
}
EXPORT_SYMBOL(ecm_db_connection_protocol_get);
/*
* ecm_db_connection_ip_version_get()
* Return IP version of connection
*/
int ecm_db_connection_ip_version_get(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
return ci->ip_version;
}
EXPORT_SYMBOL(ecm_db_connection_ip_version_get);
/*
* ecm_db_host_address_get()
* Return address of host
*/
void ecm_db_host_address_get(struct ecm_db_host_instance *hi, ip_addr_t addr)
{
DEBUG_CHECK_MAGIC(hi, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed", hi);
ECM_IP_ADDR_COPY(addr, hi->address);
}
EXPORT_SYMBOL(ecm_db_host_address_get);
/*
* ecm_db_host_on_link_get()
* Return on link status of host
*/
bool ecm_db_host_on_link_get(struct ecm_db_host_instance *hi)
{
DEBUG_CHECK_MAGIC(hi, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed", hi);
return hi->on_link;
}
EXPORT_SYMBOL(ecm_db_host_on_link_get);
/*
* ecm_db_mapping_adress_get()
* Return address
*/
void ecm_db_mapping_adress_get(struct ecm_db_mapping_instance *mi, ip_addr_t addr)
{
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", mi);
ECM_IP_ADDR_COPY(addr, mi->host->address);
}
EXPORT_SYMBOL(ecm_db_mapping_adress_get);
/*
* ecm_db_mapping_port_get()
* Return port
*/
int ecm_db_mapping_port_get(struct ecm_db_mapping_instance *mi)
{
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", mi);
return mi->port;
}
EXPORT_SYMBOL(ecm_db_mapping_port_get);
/*
* ecm_db_node_adress_get()
* Return address
*/
void ecm_db_node_adress_get(struct ecm_db_node_instance *ni, uint8_t *address_buffer)
{
DEBUG_CHECK_MAGIC(ni, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed", ni);
memcpy(address_buffer, ni->address, ETH_ALEN);
}
EXPORT_SYMBOL(ecm_db_node_adress_get);
/*
* _ecm_db_timer_group_entry_remove()
* Remove the entry from its timer group, returns false if the entry has already expired.
*/
static bool _ecm_db_timer_group_entry_remove(struct ecm_db_timer_group_entry *tge)
{
struct ecm_db_timer_group *timer_group;
/*
* If not in a timer group then it is already removed
*/
if (tge->group == ECM_DB_TIMER_GROUPS_MAX) {
return false;
}
/*
* Remove the connection from its current group
*/
timer_group = &ecm_db_timer_groups[tge->group];
/*
* Somewhere in the list?
*/
if (tge->prev) {
tge->prev->next = tge->next;
} else {
/*
* First in the group
*/
DEBUG_ASSERT(timer_group->head == tge, "%p: bad head, expecting %p, got %p\n", timer_group, tge, timer_group->head);
timer_group->head = tge->next;
}
if (tge->next) {
tge->next->prev = tge->prev;
} else {
/*
* No next so this must be the last item - we need to adjust the tail pointer
*/
DEBUG_ASSERT(timer_group->tail == tge, "%p: bad tail, expecting %p got %p\n", timer_group, tge, timer_group->tail);
timer_group->tail = tge->prev;
}
/*
* No longer a part of a timer group
*/
tge->group = ECM_DB_TIMER_GROUPS_MAX;
return true;
}
/*
* ecm_db_timer_group_entry_remove()
* Remove the connection from its timer group, returns false if the entry has already expired.
*/
bool ecm_db_timer_group_entry_remove(struct ecm_db_timer_group_entry *tge)
{
bool res;
spin_lock_bh(&ecm_db_lock);
res = _ecm_db_timer_group_entry_remove(tge);
spin_unlock_bh(&ecm_db_lock);
return res;
}
EXPORT_SYMBOL(ecm_db_timer_group_entry_remove);
/*
* _ecm_db_timer_group_entry_set()
* Set the timer group to which this entry will be a member
*/
void _ecm_db_timer_group_entry_set(struct ecm_db_timer_group_entry *tge, ecm_db_timer_group_t tg)
{
struct ecm_db_timer_group *timer_group;
DEBUG_ASSERT(tge->group == ECM_DB_TIMER_GROUPS_MAX, "%p: already set\n", tge);
/*
* Set group
*/
tge->group = tg;
timer_group = &ecm_db_timer_groups[tge->group];
tge->timeout = timer_group->time + ecm_db_time;
/*
* Insert into a timer group at the head (as this is now touched)
*/
tge->prev = NULL;
tge->next = timer_group->head;
if (!timer_group->head) {
/*
* As there is no head there is also no tail so we need to set that
*/
timer_group->tail = tge;
} else {
/*
* As there is a head already there must be a tail. Since we insert before
* the current head we don't adjust the tail.
*/
timer_group->head->prev = tge;
}
timer_group->head = tge;
}
/*
* ecm_db_timer_group_entry_reset()
* Re-set the timer group to which this entry will be a member.
*
* Returns false if the timer cannot be reset because it has expired
*/
bool ecm_db_timer_group_entry_reset(struct ecm_db_timer_group_entry *tge, ecm_db_timer_group_t tg)
{
spin_lock_bh(&ecm_db_lock);
/*
* Remove it from its current group, if any
*/
if (!_ecm_db_timer_group_entry_remove(tge)) {
spin_unlock_bh(&ecm_db_lock);
return false;
}
/*
* Set new group
*/
_ecm_db_timer_group_entry_set(tge, tg);
spin_unlock_bh(&ecm_db_lock);
return true;
}
EXPORT_SYMBOL(ecm_db_timer_group_entry_reset);
/*
* ecm_db_timer_group_entry_set()
* Set the timer group to which this entry will be a member
*/
void ecm_db_timer_group_entry_set(struct ecm_db_timer_group_entry *tge, ecm_db_timer_group_t tg)
{
spin_lock_bh(&ecm_db_lock);
_ecm_db_timer_group_entry_set(tge, tg);
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_timer_group_entry_set);
/*
* ecm_db_timer_group_entry_init()
* Initialise a timer entry ready for setting
*/
void ecm_db_timer_group_entry_init(struct ecm_db_timer_group_entry *tge, ecm_db_timer_group_entry_callback_t fn, void *arg)
{
memset(tge, 0, sizeof(struct ecm_db_timer_group_entry));
tge->group = ECM_DB_TIMER_GROUPS_MAX;
tge->arg = arg;
tge->fn = fn;
}
EXPORT_SYMBOL(ecm_db_timer_group_entry_init);
/*
* ecm_db_timer_group_entry_touch()
* Update the timeout, if the timer is not running this has no effect.
* It returns false if the timer is not running.
*/
bool ecm_db_timer_group_entry_touch(struct ecm_db_timer_group_entry *tge)
{
struct ecm_db_timer_group *timer_group;
spin_lock_bh(&ecm_db_lock);
/*
* If not in a timer group then do nothing
*/
if (tge->group == ECM_DB_TIMER_GROUPS_MAX) {
spin_unlock_bh(&ecm_db_lock);
return false;
}
/*
* Update time to live
*/
timer_group = &ecm_db_timer_groups[tge->group];
/*
* Link out of its current position.
*/
if (!tge->prev) {
/*
* Already at the head, just update the time
*/
tge->timeout = timer_group->time + ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
return true;
}
/*
* tge->prev is not null, so:
* 1) it is in a timer list
* 2) is not at the head of the list
* 3) there is a head already (so more than one item on the list)
* 4) there is a prev pointer.
* Somewhere in the group list - unlink it.
*/
tge->prev->next = tge->next;
if (tge->next) {
tge->next->prev = tge->prev;
} else {
/*
* Since there is no next this must be the tail
*/
DEBUG_ASSERT(timer_group->tail == tge, "%p: bad tail, expecting %p got %p\n", timer_group, tge, timer_group->tail);
timer_group->tail = tge->prev;
}
/*
* Link in to head.
*/
tge->timeout = timer_group->time + ecm_db_time;
tge->prev = NULL;
tge->next = timer_group->head;
timer_group->head->prev = tge;
timer_group->head = tge;
spin_unlock_bh(&ecm_db_lock);
return true;
}
EXPORT_SYMBOL(ecm_db_timer_group_entry_touch);
/*
* _ecm_db_connection_ref()
*/
static void _ecm_db_connection_ref(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
ci->refs++;
DEBUG_TRACE("%p: connection ref %d\n", ci, ci->refs);
DEBUG_ASSERT(ci->refs > 0, "%p: ref wrap\n", ci);
}
/*
* ecm_db_connection_ref()
*/
void ecm_db_connection_ref(struct ecm_db_connection_instance *ci)
{
spin_lock_bh(&ecm_db_lock);
_ecm_db_connection_ref(ci);
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_connection_ref);
/*
* _ecm_db_mapping_ref()
*/
static void _ecm_db_mapping_ref(struct ecm_db_mapping_instance *mi)
{
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed\n", mi);
mi->refs++;
DEBUG_TRACE("%p: mapping ref %d\n", mi, mi->refs);
DEBUG_ASSERT(mi->refs > 0, "%p: ref wrap\n", mi);
}
/*
* ecm_db_mapping_ref()
*/
void ecm_db_mapping_ref(struct ecm_db_mapping_instance *mi)
{
spin_lock_bh(&ecm_db_lock);
_ecm_db_mapping_ref(mi);
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_mapping_ref);
/*
* _ecm_db_host_ref()
*/
static void _ecm_db_host_ref(struct ecm_db_host_instance *hi)
{
DEBUG_CHECK_MAGIC(hi, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed\n", hi);
hi->refs++;
DEBUG_TRACE("%p: host ref %d\n", hi, hi->refs);
DEBUG_ASSERT(hi->refs > 0, "%p: ref wrap\n", hi);
}
/*
* ecm_db_host_ref()
*/
void ecm_db_host_ref(struct ecm_db_host_instance *hi)
{
spin_lock_bh(&ecm_db_lock);
_ecm_db_host_ref(hi);
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_host_ref);
/*
* _ecm_db_node_ref()
*/
static void _ecm_db_node_ref(struct ecm_db_node_instance *ni)
{
DEBUG_CHECK_MAGIC(ni, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed\n", ni);
ni->refs++;
DEBUG_TRACE("%p: node ref %d\n", ni, ni->refs);
DEBUG_ASSERT(ni->refs > 0, "%p: ref wrap\n", ni);
}
/*
* ecm_db_node_ref()
*/
void ecm_db_node_ref(struct ecm_db_node_instance *ni)
{
spin_lock_bh(&ecm_db_lock);
_ecm_db_node_ref(ni);
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_node_ref);
/*
* _ecm_db_iface_ref()
*/
static void _ecm_db_iface_ref(struct ecm_db_iface_instance *ii)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
ii->refs++;
DEBUG_TRACE("%p: iface ref %d\n", ii, ii->refs);
DEBUG_ASSERT(ii->refs > 0, "%p: ref wrap\n", ii);
}
/*
* ecm_db_iface_ref()
*/
void ecm_db_iface_ref(struct ecm_db_iface_instance *ii)
{
spin_lock_bh(&ecm_db_lock);
_ecm_db_iface_ref(ii);
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_iface_ref);
/*
* _ecm_db_listener_ref()
*/
static void _ecm_db_listener_ref(struct ecm_db_listener_instance *li)
{
DEBUG_CHECK_MAGIC(li, ECM_DB_LISTENER_INSTANCE_MAGIC, "%p: magic failed", li);
li->refs++;
DEBUG_ASSERT(li->refs > 0, "%p: ref wrap\n", li);
}
/*
* ecm_db_listener_ref()
*/
void ecm_db_listener_ref(struct ecm_db_listener_instance *li)
{
spin_lock_bh(&ecm_db_lock);
_ecm_db_listener_ref(li);
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_listener_ref);
/*
* ecm_db_connections_get_and_ref_first()
* Obtain a ref to the first connection instance, if any
*/
struct ecm_db_connection_instance *ecm_db_connections_get_and_ref_first(void)
{
struct ecm_db_connection_instance *ci;
spin_lock_bh(&ecm_db_lock);
ci = ecm_db_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
EXPORT_SYMBOL(ecm_db_connections_get_and_ref_first);
/*
* ecm_db_connection_get_and_ref_next()
* Return the next connection in the list given a connection
*/
struct ecm_db_connection_instance *ecm_db_connection_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *cin;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
cin = ci->next;
if (cin) {
_ecm_db_connection_ref(cin);
}
spin_unlock_bh(&ecm_db_lock);
return cin;
}
EXPORT_SYMBOL(ecm_db_connection_get_and_ref_next);
/*
* ecm_db_mappings_get_and_ref_first()
* Obtain a ref to the first mapping instance, if any
*/
struct ecm_db_mapping_instance *ecm_db_mappings_get_and_ref_first(void)
{
struct ecm_db_mapping_instance *mi;
spin_lock_bh(&ecm_db_lock);
mi = ecm_db_mappings;
if (mi) {
_ecm_db_mapping_ref(mi);
}
spin_unlock_bh(&ecm_db_lock);
return mi;
}
EXPORT_SYMBOL(ecm_db_mappings_get_and_ref_first);
/*
* ecm_db_mapping_get_and_ref_next()
* Return the next mapping in the list given a mapping
*/
struct ecm_db_mapping_instance *ecm_db_mapping_get_and_ref_next(struct ecm_db_mapping_instance *mi)
{
struct ecm_db_mapping_instance *min;
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", mi);
spin_lock_bh(&ecm_db_lock);
min = mi->next;
if (min) {
_ecm_db_mapping_ref(min);
}
spin_unlock_bh(&ecm_db_lock);
return min;
}
EXPORT_SYMBOL(ecm_db_mapping_get_and_ref_next);
/*
* ecm_db_hosts_get_and_ref_first()
* Obtain a ref to the first host instance, if any
*/
struct ecm_db_host_instance *ecm_db_hosts_get_and_ref_first(void)
{
struct ecm_db_host_instance *hi;
spin_lock_bh(&ecm_db_lock);
hi = ecm_db_hosts;
if (hi) {
_ecm_db_host_ref(hi);
}
spin_unlock_bh(&ecm_db_lock);
return hi;
}
EXPORT_SYMBOL(ecm_db_hosts_get_and_ref_first);
/*
* ecm_db_host_get_and_ref_next()
* Return the next host in the list given a host
*/
struct ecm_db_host_instance *ecm_db_host_get_and_ref_next(struct ecm_db_host_instance *hi)
{
struct ecm_db_host_instance *hin;
DEBUG_CHECK_MAGIC(hi, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed", hi);
spin_lock_bh(&ecm_db_lock);
hin = hi->next;
if (hin) {
_ecm_db_host_ref(hin);
}
spin_unlock_bh(&ecm_db_lock);
return hin;
}
EXPORT_SYMBOL(ecm_db_host_get_and_ref_next);
/*
* ecm_db_listeners_get_and_ref_first()
* Obtain a ref to the first listener instance, if any
*/
static struct ecm_db_listener_instance *ecm_db_listeners_get_and_ref_first(void)
{
struct ecm_db_listener_instance *li;
spin_lock_bh(&ecm_db_lock);
li = ecm_db_listeners;
if (li) {
_ecm_db_listener_ref(li);
}
spin_unlock_bh(&ecm_db_lock);
return li;
}
/*
* ecm_db_listener_get_and_ref_next()
* Return the next listener in the list given a listener
*/
static struct ecm_db_listener_instance *ecm_db_listener_get_and_ref_next(struct ecm_db_listener_instance *li)
{
struct ecm_db_listener_instance *lin;
DEBUG_CHECK_MAGIC(li, ECM_DB_LISTENER_INSTANCE_MAGIC, "%p: magic failed", li);
spin_lock_bh(&ecm_db_lock);
lin = li->next;
if (lin) {
_ecm_db_listener_ref(lin);
}
spin_unlock_bh(&ecm_db_lock);
return lin;
}
/*
* ecm_db_nodes_get_and_ref_first()
* Obtain a ref to the first node instance, if any
*/
struct ecm_db_node_instance *ecm_db_nodes_get_and_ref_first(void)
{
struct ecm_db_node_instance *ni;
spin_lock_bh(&ecm_db_lock);
ni = ecm_db_nodes;
if (ni) {
_ecm_db_node_ref(ni);
}
spin_unlock_bh(&ecm_db_lock);
return ni;
}
EXPORT_SYMBOL(ecm_db_nodes_get_and_ref_first);
/*
* ecm_db_node_get_and_ref_next()
* Return the next node in the list given a node
*/
struct ecm_db_node_instance *ecm_db_node_get_and_ref_next(struct ecm_db_node_instance *ni)
{
struct ecm_db_node_instance *nin;
DEBUG_CHECK_MAGIC(ni, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed", ni);
spin_lock_bh(&ecm_db_lock);
nin = ni->next;
if (nin) {
_ecm_db_node_ref(nin);
}
spin_unlock_bh(&ecm_db_lock);
return nin;
}
EXPORT_SYMBOL(ecm_db_node_get_and_ref_next);
/*
* ecm_db_interfaces_get_and_ref_first()
* Obtain a ref to the first iface instance, if any
*/
struct ecm_db_iface_instance *ecm_db_interfaces_get_and_ref_first(void)
{
struct ecm_db_iface_instance *ii;
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_interfaces;
if (ii) {
_ecm_db_iface_ref(ii);
}
spin_unlock_bh(&ecm_db_lock);
return ii;
}
EXPORT_SYMBOL(ecm_db_interfaces_get_and_ref_first);
/*
* ecm_db_interface_get_and_ref_next()
* Return the next iface in the list given a iface
*/
struct ecm_db_iface_instance *ecm_db_interface_get_and_ref_next(struct ecm_db_iface_instance *ii)
{
struct ecm_db_iface_instance *iin;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
spin_lock_bh(&ecm_db_lock);
iin = ii->next;
if (iin) {
_ecm_db_iface_ref(iin);
}
spin_unlock_bh(&ecm_db_lock);
return iin;
}
EXPORT_SYMBOL(ecm_db_interface_get_and_ref_next);
#ifdef ECM_DB_CTA_TRACK_ENABLE
/*
* _ecm_db_classifier_type_assignment_remove()
* Remove the connection from the classifier type assignment list (of the given type)
*/
static void _ecm_db_classifier_type_assignment_remove(struct ecm_db_connection_instance *ci, ecm_classifier_type_t ca_type)
{
struct ecm_db_connection_classifier_type_assignment *ta;
struct ecm_db_connection_classifier_type_assignment_list *tal;
DEBUG_TRACE("%p: Classifier type assignment remove: %d\n", ci, ca_type);
ta = &ci->type_assignment[ca_type];
DEBUG_CHECK_MAGIC(ta, ECM_DB_CLASSIFIER_TYPE_ASSIGNMENT_MAGIC, "%p: magic failed, ci: %p\n", ta, ci);
DEBUG_ASSERT(ta->iteration_count == 0, "%p: iteration count: %d, type: %d\n", ci, ta->iteration_count, ca_type);
if (ta->next) {
struct ecm_db_connection_classifier_type_assignment *tan = &ta->next->type_assignment[ca_type];
DEBUG_ASSERT(tan->prev == ci, "Bad list, expecting: %p, got: %p\n", ci, tan->prev);
tan->prev = ta->prev;
}
tal = &ecm_db_connection_classifier_type_assignments[ca_type];
if (ta->prev) {
struct ecm_db_connection_classifier_type_assignment *tap = &ta->prev->type_assignment[ca_type];
DEBUG_ASSERT(tap->next == ci, "Bad list, expecting: %p, got: %p\n", ci, tap->next);
tap->next = ta->next;
} else {
/*
* Set new head of list
*/
DEBUG_ASSERT(tal->type_assignments_list == ci, "Bad head, expecting %p, got %p, type: %d\n", ci, tal->type_assignments_list, ca_type);
tal->type_assignments_list = ta->next;
}
ta->next = NULL;
ta->prev = NULL;
ta->pending_unassign = false;
/*
* Decrement assignment count
*/
tal->type_assignment_count--;
DEBUG_ASSERT(tal->type_assignment_count >= 0, "Bad type assignment count: %d, type: %d\n", tal->type_assignment_count, ca_type);
DEBUG_CLEAR_MAGIC(ta);
}
#endif
/*
* ecm_db_connection_deref()
* Release reference to connection. Connection is removed from database on final deref and destroyed.
*/
int ecm_db_connection_deref(struct ecm_db_connection_instance *ci)
{
#ifdef ECM_DB_CTA_TRACK_ENABLE
ecm_classifier_type_t ca_type;
#endif
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
ci->refs--;
DEBUG_TRACE("%p: connection deref %d\n", ci, ci->refs);
DEBUG_ASSERT(ci->refs >= 0, "%p: ref wrap\n", ci);
if (ci->refs > 0) {
int refs = ci->refs;
spin_unlock_bh(&ecm_db_lock);
return refs;
}
#ifdef ECM_DB_CTA_TRACK_ENABLE
/*
* Unlink from the "assignments by classifier type" lists.
*
* This is done whether the connection is inserted into the database or not - this is because
* classifier assignments take place before adding into the db.
*
* NOTE: We know that the ci is not being iterated in any of these lists because otherwise
* ci would be being held as part of iteration and so we would not be here!
* Equally we know that if the assignments_by_type[] element is non-null then it must also be in the relevant list too.
*/
for (ca_type = 0; ca_type < ECM_CLASSIFIER_TYPES; ++ca_type) {
if (!ci->assignments_by_type[ca_type]) {
/*
* No assignment of this type, so would not be in the classifier type assignments list
*/
continue;
}
_ecm_db_classifier_type_assignment_remove(ci, ca_type);
}
#endif
/*
* Remove from database if inserted
*/
if (!ci->flags & ECM_DB_CONNECTION_FLAGS_INSERTED) {
spin_unlock_bh(&ecm_db_lock);
} else {
struct ecm_db_listener_instance *li;
#ifdef ECM_DB_XREF_ENABLE
struct ecm_db_iface_instance *iface_from;
struct ecm_db_iface_instance *iface_to;
struct ecm_db_iface_instance *iface_nat_from;
struct ecm_db_iface_instance *iface_nat_to;
#endif
/*
* Remove it from the connection hash table
*/
if (!ci->hash_prev) {
DEBUG_ASSERT(ecm_db_connection_table[ci->hash_index] == ci, "%p: hash table bad\n", ci);
ecm_db_connection_table[ci->hash_index] = ci->hash_next;
} else {
ci->hash_prev->hash_next = ci->hash_next;
}
if (ci->hash_next) {
ci->hash_next->hash_prev = ci->hash_prev;
}
ecm_db_connection_table_lengths[ci->hash_index]--;
DEBUG_ASSERT(ecm_db_connection_table_lengths[ci->hash_index] >= 0, "%p: invalid table len %d\n", ci, ecm_db_connection_table_lengths[ci->hash_index]);
/*
* Remove it from the connection serial hash table
*/
if (!ci->serial_hash_prev) {
DEBUG_ASSERT(ecm_db_connection_serial_table[ci->serial_hash_index] == ci, "%p: hash table bad\n", ci);
ecm_db_connection_serial_table[ci->serial_hash_index] = ci->serial_hash_next;
} else {
ci->serial_hash_prev->serial_hash_next = ci->serial_hash_next;
}
if (ci->serial_hash_next) {
ci->serial_hash_next->serial_hash_prev = ci->serial_hash_prev;
}
ecm_db_connection_serial_table_lengths[ci->serial_hash_index]--;
DEBUG_ASSERT(ecm_db_connection_serial_table_lengths[ci->serial_hash_index] >= 0, "%p: invalid table len %d\n", ci, ecm_db_connection_serial_table_lengths[ci->serial_hash_index]);
/*
* Remove from the global list
*/
if (!ci->prev) {
DEBUG_ASSERT(ecm_db_connections == ci, "%p: conn table bad\n", ci);
ecm_db_connections = ci->next;
} else {
ci->prev->next = ci->next;
}
if (ci->next) {
ci->next->prev = ci->prev;
}
#ifdef ECM_DB_XREF_ENABLE
/*
* Remove connection from the "from" mapping connection list
*/
if (!ci->from_prev) {
DEBUG_ASSERT(ci->mapping_from->from_connections == ci, "%p: from conn table bad\n", ci);
ci->mapping_from->from_connections = ci->from_next;
} else {
ci->from_prev->from_next = ci->from_next;
}
if (ci->from_next) {
ci->from_next->from_prev = ci->from_prev;
}
/*
* Remove connection from the "to" mapping connection list
*/
if (!ci->to_prev) {
DEBUG_ASSERT(ci->mapping_to->to_connections == ci, "%p: to conn table bad\n", ci);
ci->mapping_to->to_connections = ci->to_next;
} else {
ci->to_prev->to_next = ci->to_next;
}
if (ci->to_next) {
ci->to_next->to_prev = ci->to_prev;
}
/*
* Remove connection from the "from" NAT mapping connection list
*/
if (!ci->from_nat_prev) {
DEBUG_ASSERT(ci->mapping_nat_from->from_nat_connections == ci, "%p: nat from conn table bad\n", ci);
ci->mapping_nat_from->from_nat_connections = ci->from_nat_next;
} else {
ci->from_nat_prev->from_nat_next = ci->from_nat_next;
}
if (ci->from_nat_next) {
ci->from_nat_next->from_nat_prev = ci->from_nat_prev;
}
/*
* Remove connection from the "to" NAT mapping connection list
*/
if (!ci->to_nat_prev) {
DEBUG_ASSERT(ci->mapping_nat_to->to_nat_connections == ci, "%p: nat to conn table bad\n", ci);
ci->mapping_nat_to->to_nat_connections = ci->to_nat_next;
} else {
ci->to_nat_prev->to_nat_next = ci->to_nat_next;
}
if (ci->to_nat_next) {
ci->to_nat_next->to_nat_prev = ci->to_nat_prev;
}
/*
* Remove connection from the "from" iface connection list
* GGG TODO Deprecated. Interface lists will be used instead. To be deleted.
*/
iface_from = ci->from_node->iface;
if (!ci->iface_from_prev) {
DEBUG_ASSERT(iface_from->from_connections == ci, "%p: iface from conn table bad\n", ci);
iface_from->from_connections = ci->iface_from_next;
} else {
ci->iface_from_prev->iface_from_next = ci->iface_from_next;
}
if (ci->iface_from_next) {
ci->iface_from_next->iface_from_prev = ci->iface_from_prev;
}
/*
* Remove connection from the "to" iface connection list
* GGG TODO Deprecated. Interface lists will be used instead. To be deleted.
*/
iface_to = ci->to_node->iface;
if (!ci->iface_to_prev) {
DEBUG_ASSERT(iface_to->to_connections == ci, "%p: to conn table bad\n", ci);
iface_to->to_connections = ci->iface_to_next;
} else {
ci->iface_to_prev->iface_to_next = ci->iface_to_next;
}
if (ci->iface_to_next) {
ci->iface_to_next->iface_to_prev = ci->iface_to_prev;
}
/*
* Remove connection from the "from" NAT iface connection list
* GGG TODO Deprecated. Interface lists will be used instead. To be deleted.
*/
iface_nat_from = ci->from_nat_node->iface;
if (!ci->iface_from_nat_prev) {
DEBUG_ASSERT(iface_nat_from->from_nat_connections == ci, "%p: nat from conn table bad\n", ci);
iface_nat_from->from_nat_connections = ci->iface_from_nat_next;
} else {
ci->iface_from_nat_prev->iface_from_nat_next = ci->iface_from_nat_next;
}
if (ci->iface_from_nat_next) {
ci->iface_from_nat_next->iface_from_nat_prev = ci->iface_from_nat_prev;
}
/*
* Remove connection from the "to" NAT iface connection list
* GGG TODO Deprecated. Interface lists will be used instead. To be deleted.
*/
iface_nat_to = ci->to_nat_node->iface;
if (!ci->iface_to_nat_prev) {
DEBUG_ASSERT(iface_nat_to->to_nat_connections == ci, "%p: nat to conn table bad\n", ci);
iface_nat_to->to_nat_connections = ci->iface_to_nat_next;
} else {
ci->iface_to_nat_prev->iface_to_nat_next = ci->iface_to_nat_next;
}
if (ci->iface_to_nat_next) {
ci->iface_to_nat_next->iface_to_nat_prev = ci->iface_to_nat_prev;
}
/*
* Remove connection from its "from node" node connection list
*/
if (!ci->node_from_prev) {
DEBUG_ASSERT(ci->from_node->from_connections == ci, "%p: from node conn table bad, got: %p\n", ci, ci->from_node->from_connections);
ci->from_node->from_connections = ci->node_from_next;
} else {
ci->node_from_prev->node_from_next = ci->node_from_next;
}
if (ci->node_from_next) {
ci->node_from_next->node_from_prev = ci->node_from_prev;
}
ci->from_node->from_connections_count--;
DEBUG_ASSERT(ci->from_node->from_connections_count >= 0, "%p: bad count\n", ci);
/*
* Remove connection from its "to node" node connection list
*/
if (!ci->node_to_prev) {
DEBUG_ASSERT(ci->to_node->to_connections == ci, "%p: to node conn table bad, got: %p\n", ci, ci->to_node->to_connections);
ci->to_node->to_connections = ci->node_to_next;
} else {
ci->node_to_prev->node_to_next = ci->node_to_next;
}
if (ci->node_to_next) {
ci->node_to_next->node_to_prev = ci->node_to_prev;
}
ci->to_node->to_connections_count--;
DEBUG_ASSERT(ci->to_node->to_connections_count >= 0, "%p: bad count\n", ci);
/*
* Remove connection from its "from nat node" node connection list
*/
if (!ci->node_from_nat_prev) {
DEBUG_ASSERT(ci->from_nat_node->from_nat_connections == ci, "%p: from nat node conn table bad, got: %p\n", ci, ci->from_nat_node->from_nat_connections);
ci->from_nat_node->from_nat_connections = ci->node_from_nat_next;
} else {
ci->node_from_nat_prev->node_from_nat_next = ci->node_from_nat_next;
}
if (ci->node_from_nat_next) {
ci->node_from_nat_next->node_from_nat_prev = ci->node_from_nat_prev;
}
ci->from_nat_node->from_nat_connections_count--;
DEBUG_ASSERT(ci->from_nat_node->from_nat_connections_count >= 0, "%p: bad count\n", ci);
/*
* Remove connection from its "to nat node" node connection list
*/
if (!ci->node_to_nat_prev) {
DEBUG_ASSERT(ci->to_nat_node->to_nat_connections == ci, "%p: to nat node conn table bad, got: %p\n", ci, ci->to_nat_node->to_nat_connections);
ci->to_nat_node->to_nat_connections = ci->node_to_nat_next;
} else {
ci->node_to_nat_prev->node_to_nat_next = ci->node_to_nat_next;
}
if (ci->node_to_nat_next) {
ci->node_to_nat_next->node_to_nat_prev = ci->node_to_nat_prev;
}
ci->to_nat_node->to_nat_connections_count--;
DEBUG_ASSERT(ci->to_nat_node->to_nat_connections_count >= 0, "%p: bad count\n", ci);
#endif
/*
* Update the counters in the mappings
*/
if (ci->protocol == IPPROTO_UDP) {
ci->mapping_from->udp_from--;
ci->mapping_to->udp_to--;
ci->mapping_nat_from->udp_nat_from--;
ci->mapping_nat_to->udp_nat_to--;
} else if (ci->protocol == IPPROTO_TCP) {
ci->mapping_from->tcp_from--;
ci->mapping_to->tcp_to--;
ci->mapping_nat_from->tcp_nat_from--;
ci->mapping_nat_to->tcp_nat_to--;
}
ci->mapping_from->from--;
ci->mapping_to->to--;
ci->mapping_nat_from->nat_from--;
ci->mapping_nat_to->nat_to--;
/*
* Assert that the defunt timer has been detached
*/
DEBUG_ASSERT(ci->defunct_timer.group == ECM_DB_TIMER_GROUPS_MAX, "%p: unexpected timer group %d\n", ci, ci->defunct_timer.group);
/*
* Decrement protocol counter stats
*/
ecm_db_connection_count_by_protocol[ci->protocol]--;
DEBUG_ASSERT(ecm_db_connection_count_by_protocol[ci->protocol] >= 0, "%p: Invalid protocol count %d\n", ci, ecm_db_connection_count_by_protocol[ci->protocol]);
spin_unlock_bh(&ecm_db_lock);
/*
* Throw removed event to listeners
*/
DEBUG_TRACE("%p: Throw connection removed event\n", ci);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->connection_removed) {
li->connection_removed(li->arg, ci);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
/*
* Throw final event
*/
if (ci->final) {
ci->final(ci->arg);
}
/*
* Release instances to the objects referenced by the connection
*/
while (ci->assignments) {
struct ecm_classifier_instance *classi = ci->assignments;
ci->assignments = classi->ca_next;
classi->deref(classi);
}
if (ci->mapping_from) {
ecm_db_mapping_deref(ci->mapping_from);
}
if (ci->mapping_to) {
ecm_db_mapping_deref(ci->mapping_to);
}
if (ci->mapping_nat_from) {
ecm_db_mapping_deref(ci->mapping_nat_from);
}
if (ci->mapping_nat_to) {
ecm_db_mapping_deref(ci->mapping_nat_to);
}
if (ci->feci) {
ci->feci->deref(ci->feci);
}
if (ci->from_node) {
ecm_db_node_deref(ci->from_node);
}
if (ci->to_node) {
ecm_db_node_deref(ci->to_node);
}
if (ci->from_nat_node) {
ecm_db_node_deref(ci->from_nat_node);
}
if (ci->to_nat_node) {
ecm_db_node_deref(ci->to_nat_node);
}
#ifdef ECM_MULTICAST_ENABLE
if (ci->ti) {
ecm_db_multicast_tuple_instance_deref(ci->ti);
}
#endif
/*
* Remove references to the interfaces in our heirarchy lists
*/
for (i = ci->from_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
DEBUG_TRACE("%p: from interface %d remove: %p\n", ci, i, ci->from_interfaces[i]);
ecm_db_iface_deref(ci->from_interfaces[i]);
}
for (i = ci->to_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
DEBUG_TRACE("%p: to interface %d remove: %p\n", ci, i, ci->to_interfaces[i]);
ecm_db_iface_deref(ci->to_interfaces[i]);
}
for (i = ci->from_nat_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
DEBUG_TRACE("%p: from nat interface %d remove: %p\n", ci, i, ci->from_nat_interfaces[i]);
ecm_db_iface_deref(ci->from_nat_interfaces[i]);
}
for (i = ci->to_nat_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
DEBUG_TRACE("%p: to nat interface %d remove: %p\n", ci, i, ci->to_nat_interfaces[i]);
ecm_db_iface_deref(ci->to_nat_interfaces[i]);
}
/*
* We can now destroy the instance
*/
DEBUG_CLEAR_MAGIC(ci);
kfree(ci);
/*
* Decrease global connection count
*/
spin_lock_bh(&ecm_db_lock);
ecm_db_connection_count--;
DEBUG_ASSERT(ecm_db_connection_count >= 0, "%p: connection count wrap\n", ci);
spin_unlock_bh(&ecm_db_lock);
return 0;
}
EXPORT_SYMBOL(ecm_db_connection_deref);
/*
* ecm_db_mapping_deref()
* Release ref to mapping, possibly removing it from the database and destroying it.
*/
int ecm_db_mapping_deref(struct ecm_db_mapping_instance *mi)
{
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed\n", mi);
spin_lock_bh(&ecm_db_lock);
mi->refs--;
DEBUG_TRACE("%p: mapping deref %d\n", mi, mi->refs);
DEBUG_ASSERT(mi->refs >= 0, "%p: ref wrap\n", mi);
if (mi->refs > 0) {
int refs = mi->refs;
spin_unlock_bh(&ecm_db_lock);
return refs;
}
DEBUG_ASSERT(!mi->tcp_from && !mi->udp_from && !mi->from, "%p: from not zero: %d, %d, %d\n",
mi, mi->tcp_from, mi->udp_from, mi->from);
DEBUG_ASSERT(!mi->tcp_to && !mi->udp_to && !mi->to, "%p: to not zero: %d, %d, %d\n",
mi, mi->tcp_to, mi->udp_to, mi->to);
DEBUG_ASSERT(!mi->tcp_nat_from && !mi->udp_nat_from && !mi->nat_from, "%p: nat_from not zero: %d, %d, %d\n",
mi, mi->tcp_nat_from, mi->udp_nat_from, mi->nat_from);
DEBUG_ASSERT(!mi->tcp_nat_to && !mi->udp_nat_to && !mi->nat_to, "%p: nat_to not zero: %d, %d, %d\n",
mi, mi->tcp_nat_to, mi->udp_nat_to, mi->nat_to);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT(!mi->from_connections, "%p: from not null: %p\n", mi, mi->from_connections);
DEBUG_ASSERT(!mi->to_connections, "%p: to not null: %p\n", mi, mi->to_connections);
DEBUG_ASSERT(!mi->from_nat_connections, "%p: nat_from not null: %p\n", mi, mi->from_nat_connections);
DEBUG_ASSERT(!mi->to_nat_connections, "%p: nat_to not null: %p\n", mi, mi->to_nat_connections);
#endif
/*
* Remove from database if inserted
*/
if (!mi->flags & ECM_DB_MAPPING_FLAGS_INSERTED) {
spin_unlock_bh(&ecm_db_lock);
} else {
struct ecm_db_listener_instance *li;
/*
* Remove from the global list
*/
if (!mi->prev) {
DEBUG_ASSERT(ecm_db_mappings == mi, "%p: mapping table bad\n", mi);
ecm_db_mappings = mi->next;
} else {
mi->prev->next = mi->next;
}
if (mi->next) {
mi->next->prev = mi->prev;
}
/*
* Unlink it from the mapping hash table
*/
if (!mi->hash_prev) {
DEBUG_ASSERT(ecm_db_mapping_table[mi->hash_index] == mi, "%p: hash table bad\n", mi);
ecm_db_mapping_table[mi->hash_index] = mi->hash_next;
} else {
mi->hash_prev->hash_next = mi->hash_next;
}
if (mi->hash_next) {
mi->hash_next->hash_prev = mi->hash_prev;
}
mi->hash_next = NULL;
mi->hash_prev = NULL;
ecm_db_mapping_table_lengths[mi->hash_index]--;
DEBUG_ASSERT(ecm_db_mapping_table_lengths[mi->hash_index] >= 0, "%p: invalid table len %d\n", mi, ecm_db_mapping_table_lengths[mi->hash_index]);
#ifdef ECM_DB_XREF_ENABLE
/*
* Unlink it from the host mapping list
*/
if (!mi->mapping_prev) {
DEBUG_ASSERT(mi->host->mappings == mi, "%p: mapping table bad\n", mi);
mi->host->mappings = mi->mapping_next;
} else {
mi->mapping_prev->mapping_next = mi->mapping_next;
}
if (mi->mapping_next) {
mi->mapping_next->mapping_prev = mi->mapping_prev;
}
mi->mapping_next = NULL;
mi->mapping_prev = NULL;
mi->host->mapping_count--;
#endif
spin_unlock_bh(&ecm_db_lock);
/*
* Throw removed event to listeners
*/
DEBUG_TRACE("%p: Throw mapping removed event\n", mi);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->mapping_removed) {
li->mapping_removed(li->arg, mi);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
/*
* Throw final event
*/
if (mi->final) {
mi->final(mi->arg);
}
/*
* Now release the host instance if the mapping had one
*/
if (mi->host) {
ecm_db_host_deref(mi->host);
}
/*
* We can now destroy the instance
*/
DEBUG_CLEAR_MAGIC(mi);
kfree(mi);
/*
* Decrease global mapping count
*/
spin_lock_bh(&ecm_db_lock);
ecm_db_mapping_count--;
DEBUG_ASSERT(ecm_db_mapping_count >= 0, "%p: mapping count wrap\n", mi);
spin_unlock_bh(&ecm_db_lock);
return 0;
}
EXPORT_SYMBOL(ecm_db_mapping_deref);
/*
* ecm_db_host_deref()
* Release a ref to a host instance, possibly causing removal from the database and destruction of the instance
*/
int ecm_db_host_deref(struct ecm_db_host_instance *hi)
{
DEBUG_CHECK_MAGIC(hi, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed\n", hi);
spin_lock_bh(&ecm_db_lock);
hi->refs--;
DEBUG_TRACE("%p: host deref %d\n", hi, hi->refs);
DEBUG_ASSERT(hi->refs >= 0, "%p: ref wrap\n", hi);
if (hi->refs > 0) {
int refs = hi->refs;
spin_unlock_bh(&ecm_db_lock);
return refs;
}
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((hi->mappings == NULL) && (hi->mapping_count == 0), "%p: mappings not null\n", hi);
#endif
/*
* Remove from database if inserted
*/
if (!hi->flags & ECM_DB_HOST_FLAGS_INSERTED) {
spin_unlock_bh(&ecm_db_lock);
} else {
struct ecm_db_listener_instance *li;
/*
* Remove from the global list
*/
if (!hi->prev) {
DEBUG_ASSERT(ecm_db_hosts == hi, "%p: host table bad\n", hi);
ecm_db_hosts = hi->next;
} else {
hi->prev->next = hi->next;
}
if (hi->next) {
hi->next->prev = hi->prev;
}
/*
* Unlink it from the host hash table
*/
if (!hi->hash_prev) {
DEBUG_ASSERT(ecm_db_host_table[hi->hash_index] == hi, "%p: hash table bad\n", hi);
ecm_db_host_table[hi->hash_index] = hi->hash_next;
} else {
hi->hash_prev->hash_next = hi->hash_next;
}
if (hi->hash_next) {
hi->hash_next->hash_prev = hi->hash_prev;
}
hi->hash_next = NULL;
hi->hash_prev = NULL;
ecm_db_host_table_lengths[hi->hash_index]--;
DEBUG_ASSERT(ecm_db_host_table_lengths[hi->hash_index] >= 0, "%p: invalid table len %d\n", hi, ecm_db_host_table_lengths[hi->hash_index]);
spin_unlock_bh(&ecm_db_lock);
/*
* Throw removed event to listeners
*/
DEBUG_TRACE("%p: Throw host removed event\n", hi);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->host_removed) {
li->host_removed(li->arg, hi);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
/*
* Throw final event
*/
if (hi->final) {
hi->final(hi->arg);
}
/*
* We can now destroy the instance
*/
DEBUG_CLEAR_MAGIC(hi);
kfree(hi);
/*
* Decrease global host count
*/
spin_lock_bh(&ecm_db_lock);
ecm_db_host_count--;
DEBUG_ASSERT(ecm_db_host_count >= 0, "%p: host count wrap\n", hi);
spin_unlock_bh(&ecm_db_lock);
return 0;
}
EXPORT_SYMBOL(ecm_db_host_deref);
/*
* ecm_db_node_deref()
* Deref a node. Removing it on the last ref and destroying it.
*/
int ecm_db_node_deref(struct ecm_db_node_instance *ni)
{
DEBUG_CHECK_MAGIC(ni, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed\n", ni);
spin_lock_bh(&ecm_db_lock);
ni->refs--;
DEBUG_TRACE("%p: node deref %d\n", ni, ni->refs);
DEBUG_ASSERT(ni->refs >= 0, "%p: ref wrap\n", ni);
if (ni->refs > 0) {
int refs = ni->refs;
spin_unlock_bh(&ecm_db_lock);
return refs;
}
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ni->from_connections == NULL) && (ni->from_connections_count == 0), "%p: from_connections not null\n", ni);
DEBUG_ASSERT((ni->to_connections == NULL) && (ni->to_connections_count == 0), "%p: to_connections not null\n", ni);
DEBUG_ASSERT((ni->from_nat_connections == NULL) && (ni->from_nat_connections_count == 0), "%p: from_nat_connections not null\n", ni);
DEBUG_ASSERT((ni->to_nat_connections == NULL) && (ni->to_nat_connections_count == 0), "%p: to_nat_connections not null\n", ni);
#endif
/*
* Remove from database if inserted
*/
if (!ni->flags & ECM_DB_NODE_FLAGS_INSERTED) {
spin_unlock_bh(&ecm_db_lock);
} else {
struct ecm_db_listener_instance *li;
/*
* Remove from the global list
*/
if (!ni->prev) {
DEBUG_ASSERT(ecm_db_nodes == ni, "%p: node table bad\n", ni);
ecm_db_nodes = ni->next;
} else {
ni->prev->next = ni->next;
}
if (ni->next) {
ni->next->prev = ni->prev;
}
/*
* Link out of hash table
*/
if (!ni->hash_prev) {
DEBUG_ASSERT(ecm_db_node_table[ni->hash_index] == ni, "%p: hash table bad\n", ni);
ecm_db_node_table[ni->hash_index] = ni->hash_next;
} else {
ni->hash_prev->hash_next = ni->hash_next;
}
if (ni->hash_next) {
ni->hash_next->hash_prev = ni->hash_prev;
}
ni->hash_next = NULL;
ni->hash_prev = NULL;
ecm_db_node_table_lengths[ni->hash_index]--;
DEBUG_ASSERT(ecm_db_node_table_lengths[ni->hash_index] >= 0, "%p: invalid table len %d\n", ni, ecm_db_node_table_lengths[ni->hash_index]);
#ifdef ECM_DB_XREF_ENABLE
/*
* Unlink it from the iface node list
*/
if (!ni->node_prev) {
DEBUG_ASSERT(ni->iface->nodes == ni, "%p: nodes table bad\n", ni);
ni->iface->nodes = ni->node_next;
} else {
ni->node_prev->node_next = ni->node_next;
}
if (ni->node_next) {
ni->node_next->node_prev = ni->node_prev;
}
ni->node_next = NULL;
ni->node_prev = NULL;
ni->iface->node_count--;
#endif
spin_unlock_bh(&ecm_db_lock);
/*
* Throw removed event to listeners
*/
DEBUG_TRACE("%p: Throw node removed event\n", ni);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->node_removed) {
li->node_removed(li->arg, ni);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
/*
* Throw final event
*/
if (ni->final) {
ni->final(ni->arg);
}
/*
* Now release the iface instance if the node had one
*/
if (ni->iface) {
ecm_db_iface_deref(ni->iface);
}
/*
* We can now destroy the instance
*/
DEBUG_CLEAR_MAGIC(ni);
kfree(ni);
/*
* Decrease global node count
*/
spin_lock_bh(&ecm_db_lock);
ecm_db_node_count--;
DEBUG_ASSERT(ecm_db_node_count >= 0, "%p: node count wrap\n", ni);
spin_unlock_bh(&ecm_db_lock);
return 0;
}
EXPORT_SYMBOL(ecm_db_node_deref);
/*
* ecm_db_iface_deref()
* Deref a interface instance, removing it from the database on the last ref release
*/
int ecm_db_iface_deref(struct ecm_db_iface_instance *ii)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
/*
* Decrement reference count
*/
spin_lock_bh(&ecm_db_lock);
ii->refs--;
DEBUG_TRACE("%p: iface deref %d\n", ii, ii->refs);
DEBUG_ASSERT(ii->refs >= 0, "%p: ref wrap\n", ii);
if (ii->refs > 0) {
int refs = ii->refs;
spin_unlock_bh(&ecm_db_lock);
return refs;
}
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii);
#endif
/*
* Remove from database if inserted
*/
if (!ii->flags & ECM_DB_IFACE_FLAGS_INSERTED) {
spin_unlock_bh(&ecm_db_lock);
} else {
struct ecm_db_listener_instance *li;
/*
* Remove from the global list
*/
if (!ii->prev) {
DEBUG_ASSERT(ecm_db_interfaces == ii, "%p: interface table bad\n", ii);
ecm_db_interfaces = ii->next;
} else {
ii->prev->next = ii->next;
}
if (ii->next) {
ii->next->prev = ii->prev;
}
/*
* Link out of hash table
*/
if (!ii->hash_prev) {
DEBUG_ASSERT(ecm_db_iface_table[ii->hash_index] == ii, "%p: hash table bad got %p for hash index %u\n", ii, ecm_db_iface_table[ii->hash_index], ii->hash_index);
ecm_db_iface_table[ii->hash_index] = ii->hash_next;
} else {
ii->hash_prev->hash_next = ii->hash_next;
}
if (ii->hash_next) {
ii->hash_next->hash_prev = ii->hash_prev;
}
ii->hash_next = NULL;
ii->hash_prev = NULL;
ecm_db_iface_table_lengths[ii->hash_index]--;
DEBUG_ASSERT(ecm_db_iface_table_lengths[ii->hash_index] >= 0, "%p: invalid table len %d\n", ii, ecm_db_iface_table_lengths[ii->hash_index]);
/*
* Link out of interface identifier hash table
*/
if (!ii->iface_id_hash_prev) {
DEBUG_ASSERT(ecm_db_iface_id_table[ii->iface_id_hash_index] == ii, "%p: hash table bad got %p for hash index %u\n", ii, ecm_db_iface_id_table[ii->iface_id_hash_index], ii->iface_id_hash_index);
ecm_db_iface_id_table[ii->iface_id_hash_index] = ii->iface_id_hash_next;
} else {
ii->iface_id_hash_prev->iface_id_hash_next = ii->iface_id_hash_next;
}
if (ii->iface_id_hash_next) {
ii->iface_id_hash_next->iface_id_hash_prev = ii->iface_id_hash_prev;
}
ii->iface_id_hash_next = NULL;
ii->iface_id_hash_prev = NULL;
ecm_db_iface_id_table_lengths[ii->iface_id_hash_index]--;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[ii->iface_id_hash_index] >= 0, "%p: invalid table len %d\n", ii, ecm_db_iface_id_table_lengths[ii->iface_id_hash_index]);
spin_unlock_bh(&ecm_db_lock);
/*
* Throw removed event to listeners
*/
DEBUG_TRACE("%p: Throw iface removed event\n", ii);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->iface_removed) {
li->iface_removed(li->arg, ii);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
/*
* Throw final event
*/
if (ii->final) {
ii->final(ii->arg);
}
/*
* We can now destroy the instance
*/
DEBUG_CLEAR_MAGIC(ii);
kfree(ii);
/*
* Decrease global interface count
*/
spin_lock_bh(&ecm_db_lock);
ecm_db_iface_count--;
DEBUG_ASSERT(ecm_db_iface_count >= 0, "%p: iface count wrap\n", ii);
spin_unlock_bh(&ecm_db_lock);
return 0;
}
EXPORT_SYMBOL(ecm_db_iface_deref);
/*
* ecm_db_listener_deref()
* Release reference to listener.
*
* On final reference release listener shall be removed from the database.
*/
int ecm_db_listener_deref(struct ecm_db_listener_instance *li)
{
struct ecm_db_listener_instance *cli;
struct ecm_db_listener_instance **cli_prev;
DEBUG_CHECK_MAGIC(li, ECM_DB_LISTENER_INSTANCE_MAGIC, "%p: magic failed", li);
spin_lock_bh(&ecm_db_lock);
li->refs--;
DEBUG_ASSERT(li->refs >= 0, "%p: ref wrap\n", li);
if (li->refs > 0) {
int refs;
refs = li->refs;
spin_unlock_bh(&ecm_db_lock);
return refs;
}
/*
* Instance is to be removed and destroyed.
* Link the listener out of the listener list.
*/
cli = ecm_db_listeners;
cli_prev = &ecm_db_listeners;
while (cli) {
if (cli == li) {
*cli_prev = cli->next;
break;
}
cli_prev = &cli->next;
cli = cli->next;
}
DEBUG_ASSERT(cli, "%p: not found\n", li);
spin_unlock_bh(&ecm_db_lock);
/*
* Invoke final callback
*/
if (li->final) {
li->final(li->arg);
}
DEBUG_CLEAR_MAGIC(li);
kfree(li);
/*
* Decrease global listener count
*/
spin_lock_bh(&ecm_db_lock);
ecm_db_listeners_count--;
DEBUG_ASSERT(ecm_db_listeners_count >= 0, "%p: listener count wrap\n", li);
spin_unlock_bh(&ecm_db_lock);
return 0;
}
EXPORT_SYMBOL(ecm_db_listener_deref);
/*
* ecm_db_connection_defunct_all()
* Make defunct ALL connections.
*
* This API is typically used in shutdown situations commanded by the user.
* NOTE: Ensure all front ends are stopped to avoid further connections being created while this is running.
*/
void ecm_db_connection_defunct_all(void)
{
struct ecm_db_connection_instance *ci;
DEBUG_INFO("Defuncting all\n");
/*
* Iterate all connections
*/
ci = ecm_db_connections_get_and_ref_first();
while (ci) {
struct ecm_db_connection_instance *cin;
DEBUG_TRACE("%p: defunct\n", ci);
ecm_db_connection_make_defunct(ci);
cin = ecm_db_connection_get_and_ref_next(ci);
ecm_db_connection_deref(ci);
ci = cin;
}
DEBUG_INFO("Defuncting complete\n");
}
EXPORT_SYMBOL(ecm_db_connection_defunct_all);
/*
* ecm_db_connection_generate_hash_index()
* Calculate the hash index.
*
* Note: The hash we produce is symmetric - i.e. we can swap the "from" and "to"
* details without generating a different hash index!
*/
static inline ecm_db_connection_hash_t ecm_db_connection_generate_hash_index(ip_addr_t host1_addr, uint32_t host1_port, ip_addr_t host2_addr, uint32_t host2_port, int protocol)
{
uint32_t hah1;
uint32_t hah2;
uint32_t ht1;
uint32_t hash_val;
/*
* The hash function only uses both host 1 address/port, host 2 address/port
* and protocol fields.
*/
ECM_IP_ADDR_HASH(hah1, host1_addr);
ECM_IP_ADDR_HASH(hah2, host2_addr);
ht1 = (u32)hah1 + host1_port + hah2 + host2_port + (uint32_t)protocol;
hash_val = (uint32_t)jhash_1word(ht1, ecm_db_jhash_rnd);
return (ecm_db_connection_hash_t)(hash_val & (ECM_DB_CONNECTION_HASH_SLOTS - 1));
}
/*
* ecm_db_connection_generate_serial_hash_index()
* Calculate the serial hash index.
*/
static inline ecm_db_connection_serial_hash_t ecm_db_connection_generate_serial_hash_index(uint32_t serial)
{
uint32_t hash_val;
hash_val = (uint32_t)jhash_1word(serial, ecm_db_jhash_rnd);
return (ecm_db_connection_serial_hash_t)(hash_val & (ECM_DB_CONNECTION_SERIAL_HASH_SLOTS - 1));
}
#ifdef ECM_MULTICAST_ENABLE
/*
* ecm_db_multicast_generate_hash_index()
* Calculate the hash index given a multicast group address.
*/
static inline ecm_db_multicast_tuple_instance_hash_t ecm_db_multicast_generate_hash_index(ip_addr_t address)
{
uint32_t temp;
uint32_t hash_val;
if (ECM_IP_ADDR_IS_V4(address)){
temp = (uint32_t)address[0];
} else {
temp = (uint32_t)address[3];
}
hash_val = (uint32_t)jhash_1word(temp, ecm_db_jhash_rnd);
return (ecm_db_multicast_tuple_instance_hash_t)(hash_val & (ECM_DB_MULTICAST_TUPLE_INSTANCE_HASH_SLOTS - 1));
}
#endif
/*
* ecm_db_mapping_generate_hash_index()
* Calculate the hash index.
*/
static inline ecm_db_mapping_hash_t ecm_db_mapping_generate_hash_index(ip_addr_t address, uint32_t port)
{
uint32_t tuple;
uint32_t hash_val;
ECM_IP_ADDR_HASH(tuple, address);
hash_val = (uint32_t)jhash_2words(tuple, port, ecm_db_jhash_rnd);
return (ecm_db_mapping_hash_t)(hash_val & (ECM_DB_MAPPING_HASH_SLOTS - 1));
}
/*
* ecm_db_host_generate_hash_index()
* Calculate the hash index.
*/
static inline ecm_db_host_hash_t ecm_db_host_generate_hash_index(ip_addr_t address)
{
uint32_t tuple;
uint32_t hash_val;
ECM_IP_ADDR_HASH(tuple, address);
hash_val = (uint32_t)jhash_1word(tuple, ecm_db_jhash_rnd);
return (ecm_db_host_hash_t)(hash_val & (ECM_DB_HOST_HASH_SLOTS - 1));
}
/*
* ecm_db_node_generate_hash_index()
* Calculate the hash index.
*/
static inline ecm_db_node_hash_t ecm_db_node_generate_hash_index(uint8_t *address)
{
uint32_t hash_val;
hash_val = (uint32_t)jhash(address, 6, ecm_db_jhash_rnd);
hash_val &= (ECM_DB_NODE_HASH_SLOTS - 1);
return (ecm_db_node_hash_t)hash_val;
}
/*
* ecm_db_iface_id_generate_hash_index()
* Calculate the hash index based on interface identifier.
*/
static inline ecm_db_iface_id_hash_t ecm_db_iface_id_generate_hash_index(int32_t interface_id)
{
uint32_t hash_val;
hash_val = (uint32_t)jhash_1word((uint32_t)interface_id, ecm_db_jhash_rnd);
return (ecm_db_iface_id_hash_t)(hash_val & (ECM_DB_IFACE_ID_HASH_SLOTS - 1));
}
#ifdef ECM_INTERFACE_SIT_ENABLE
/*
* ecm_db_iface_generate_hash_index_sit()
* Calculate the hash index.
*/
static inline ecm_db_iface_hash_t ecm_db_iface_generate_hash_index_sit(ip_addr_t saddr, ip_addr_t daddr)
{
uint32_t tuple1;
uint32_t tuple2;
uint32_t hash_val;
ECM_IP_ADDR_HASH(tuple1, saddr);
ECM_IP_ADDR_HASH(tuple2, daddr);
hash_val = (uint32_t)jhash_2words(tuple1, tuple2, ecm_db_jhash_rnd);
return (ecm_db_iface_hash_t)(hash_val & (ECM_DB_IFACE_HASH_SLOTS - 1));
}
#endif
#ifdef ECM_INTERFACE_TUNIPIP6_ENABLE
#ifdef ECM_IPV6_ENABLE
/*
* ecm_db_iface_generate_hash_index_tunipip6()
* Calculate the hash index.
*/
static inline ecm_db_iface_hash_t ecm_db_iface_generate_hash_index_tunipip6(ip_addr_t saddr, ip_addr_t daddr)
{
uint32_t tuple1;
uint32_t tuple2;
uint32_t hash_val;
ECM_IP_ADDR_HASH(tuple1, saddr);
ECM_IP_ADDR_HASH(tuple2, daddr);
hash_val = (uint32_t)jhash_2words(tuple1, tuple2, ecm_db_jhash_rnd);
return (ecm_db_iface_hash_t)(hash_val & (ECM_DB_IFACE_HASH_SLOTS - 1));
}
#endif
#endif
/*
* ecm_db_iface_generate_hash_index_ethernet()
* Calculate the hash index.
*/
static inline ecm_db_iface_hash_t ecm_db_iface_generate_hash_index_ethernet(uint8_t *address)
{
uint32_t hash_val;
hash_val = (uint32_t)jhash(address, 6, ecm_db_jhash_rnd);
return (ecm_db_iface_hash_t)(hash_val & (ECM_DB_IFACE_HASH_SLOTS - 1));
}
#ifdef ECM_INTERFACE_PPPOE_ENABLE
/*
* ecm_db_iface_generate_hash_index_pppoe()
* Calculate the hash index.
*/
static inline ecm_db_iface_hash_t ecm_db_iface_generate_hash_index_pppoe(uint16_t pppoe_session_id)
{
uint32_t hash_val;
hash_val = (uint32_t)jhash_1word((uint32_t)pppoe_session_id, ecm_db_jhash_rnd);
return (ecm_db_iface_hash_t)(hash_val & (ECM_DB_IFACE_HASH_SLOTS - 1));
}
#endif
#ifdef ECM_INTERFACE_L2TPV2_ENABLE
/*
* ecm_db_iface_generate_hash_index_pppol2tpv2()
* Calculate the hash index.
*/
static inline ecm_db_iface_hash_t ecm_db_iface_generate_hash_index_pppol2tpv2(uint32_t pppol2tpv2_tunnel_id, uint32_t pppol2tpv2_session_id)
{
uint32_t hash_val;
hash_val = (uint32_t)jhash_2words(pppol2tpv2_tunnel_id, pppol2tpv2_session_id, ecm_db_jhash_rnd);
return (ecm_db_iface_hash_t)(hash_val & (ECM_DB_IFACE_HASH_SLOTS - 1));
}
#endif
/*
* ecm_db_iface_generate_hash_index_unknown()
* Calculate the hash index.
*/
static inline ecm_db_iface_hash_t ecm_db_iface_generate_hash_index_unknown(uint32_t os_specific_ident)
{
uint32_t hash_val;
hash_val = (uint32_t)jhash_1word(os_specific_ident, ecm_db_jhash_rnd);
return (ecm_db_iface_hash_t)(hash_val & (ECM_DB_IFACE_HASH_SLOTS - 1));
}
/*
* ecm_db_iface_generate_hash_index_loopback()
* Calculate the hash index.
*/
static inline ecm_db_iface_hash_t ecm_db_iface_generate_hash_index_loopback(uint32_t os_specific_ident)
{
uint32_t hash_val;
hash_val = (uint32_t)jhash_1word(os_specific_ident, ecm_db_jhash_rnd);
return (ecm_db_iface_hash_t)(hash_val & (ECM_DB_IFACE_HASH_SLOTS - 1));
}
#ifdef ECM_INTERFACE_IPSEC_ENABLE
/*
* ecm_db_iface_generate_hash_index_ipsec_tunnel()
* Calculate the hash index.
* GGG TODO Flesh this out using actual tunnel endpoint keys
*/
static inline ecm_db_iface_hash_t ecm_db_iface_generate_hash_index_ipsec_tunnel(uint32_t os_specific_ident)
{
uint32_t hash_val;
hash_val = (uint32_t)jhash_1word(os_specific_ident, ecm_db_jhash_rnd);
return (ecm_db_iface_hash_t)(hash_val & (ECM_DB_IFACE_HASH_SLOTS - 1));
}
#endif
/*
* ecm_db_host_find_and_ref()
* Lookup and return a host reference if any
*/
struct ecm_db_host_instance *ecm_db_host_find_and_ref(ip_addr_t address)
{
ecm_db_host_hash_t hash_index;
struct ecm_db_host_instance *hi;
DEBUG_TRACE("Lookup host with addr " ECM_IP_ADDR_OCTAL_FMT "\n", ECM_IP_ADDR_TO_OCTAL(address));
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_host_generate_hash_index(address);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
hi = ecm_db_host_table[hash_index];
while (hi) {
if (!ECM_IP_ADDR_MATCH(hi->address, address)) {
hi = hi->hash_next;
continue;
}
_ecm_db_host_ref(hi);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("host found %p\n", hi);
return hi;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Host not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_host_find_and_ref);
/*
* ecm_db_node_find_and_ref()
* Lookup and return a node reference if any
*/
struct ecm_db_node_instance *ecm_db_node_find_and_ref(uint8_t *address)
{
ecm_db_node_hash_t hash_index;
struct ecm_db_node_instance *ni;
DEBUG_TRACE("Lookup node with addr %pM\n", address);
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_node_generate_hash_index(address);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ni = ecm_db_node_table[hash_index];
while (ni) {
if (memcmp(ni->address, address, ETH_ALEN)) {
ni = ni->hash_next;
continue;
}
_ecm_db_node_ref(ni);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("node found %p\n", ni);
return ni;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Node not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_node_find_and_ref);
/*
* ecm_db_iface_ethernet_address_get()
* Obtain the ethernet address for an ethernet interface
*/
void ecm_db_iface_ethernet_address_get(struct ecm_db_iface_instance *ii, uint8_t *address)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
DEBUG_ASSERT(ii->type == ECM_DB_IFACE_TYPE_ETHERNET, "%p: Bad type, expected ethernet, actual: %d\n", ii, ii->type);
spin_lock_bh(&ecm_db_lock);
memcpy(address, ii->type_info.ethernet.address, sizeof(ii->type_info.ethernet.address));
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_iface_ethernet_address_get);
/*
* ecm_db_iface_bridge_address_get()
* Obtain the ethernet address for a bridge interface
*/
void ecm_db_iface_bridge_address_get(struct ecm_db_iface_instance *ii, uint8_t *address)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
DEBUG_ASSERT(ii->type == ECM_DB_IFACE_TYPE_BRIDGE, "%p: Bad type, expected bridge, actual: %d\n", ii, ii->type);
spin_lock_bh(&ecm_db_lock);
memcpy(address, ii->type_info.bridge.address, sizeof(ii->type_info.bridge.address));
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_iface_bridge_address_get);
/*
* _ecm_db_iface_identifier_hash_table_insert_entry()
* Calculate the hash index based on updated interface_identifier, and
* re-insert into interface identifier chain.
*
* Note: Must take ecm_db_lock before calling this.
*/
static void _ecm_db_iface_identifier_hash_table_insert_entry(struct ecm_db_iface_instance *ii, int32_t interface_identifier)
{
ecm_db_iface_id_hash_t iface_id_hash_index;
/*
* Compute hash chain for insertion
*/
iface_id_hash_index = ecm_db_iface_id_generate_hash_index(interface_identifier);
ii->iface_id_hash_index = iface_id_hash_index;
/*
* Insert into interface identifier chain
*/
ii->iface_id_hash_next = ecm_db_iface_id_table[iface_id_hash_index];
if (ecm_db_iface_id_table[iface_id_hash_index]) {
ecm_db_iface_id_table[iface_id_hash_index]->iface_id_hash_prev = ii;
}
ecm_db_iface_id_table[iface_id_hash_index] = ii;
ecm_db_iface_id_table_lengths[iface_id_hash_index]++;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[iface_id_hash_index] > 0, "%p: invalid iface id table len %d\n", ii, ecm_db_iface_id_table_lengths[iface_id_hash_index]);
}
/*
* _ecm_db_iface_identifier_hash_table_remove_entry()
* Remove an entry of a given interface instance from interface identifier chain.
*
* Note: Must take ecm_db_lock before calling this.
*/
static void _ecm_db_iface_identifier_hash_table_remove_entry(struct ecm_db_iface_instance *ii)
{
/*
* Remove from database if inserted
*/
if (!ii->flags & ECM_DB_IFACE_FLAGS_INSERTED) {
return;
}
/*
* Link out of interface identifier hash table
*/
if (!ii->iface_id_hash_prev) {
DEBUG_ASSERT(ecm_db_iface_id_table[ii->iface_id_hash_index] == ii, "%p: hash table bad got %p for hash index %u\n", ii, ecm_db_iface_id_table[ii->iface_id_hash_index], ii->iface_id_hash_index);
ecm_db_iface_id_table[ii->iface_id_hash_index] = ii->iface_id_hash_next;
} else {
ii->iface_id_hash_prev->iface_id_hash_next = ii->iface_id_hash_next;
}
if (ii->iface_id_hash_next) {
ii->iface_id_hash_next->iface_id_hash_prev = ii->iface_id_hash_prev;
}
ii->iface_id_hash_next = NULL;
ii->iface_id_hash_prev = NULL;
ecm_db_iface_id_table_lengths[ii->iface_id_hash_index]--;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[ii->iface_id_hash_index] >= 0, "%p: invalid table len %d\n", ii, ecm_db_iface_id_table_lengths[ii->iface_id_hash_index]);
}
/*
* ecm_db_iface_identifier_hash_table_entry_check_and_update()
* Update the hash table entry of interface identifier hash table.
* First remove the 'ii' from curent hash index position, re-calculate new hash and re-insert
* the 'ii' at new hash index position into interface identifier hash table.
*/
void ecm_db_iface_identifier_hash_table_entry_check_and_update(struct ecm_db_iface_instance *ii, int32_t new_interface_identifier)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
spin_lock_bh(&ecm_db_lock);
if (ii->interface_identifier == new_interface_identifier) {
spin_unlock_bh(&ecm_db_lock);
return;
}
DEBUG_TRACE("%p: interface ifindex has changed Old %d, New %d \n", ii, ii->interface_identifier, new_interface_identifier);
_ecm_db_iface_identifier_hash_table_remove_entry(ii);
ii->interface_identifier = new_interface_identifier;
_ecm_db_iface_identifier_hash_table_insert_entry(ii, new_interface_identifier);
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_iface_identifier_hash_table_entry_check_and_update);
/*
* ecm_db_iface_find_and_ref_by_interface_identifier()
* Return an interface based on a hlos interface identifier
*/
struct ecm_db_iface_instance *ecm_db_iface_find_and_ref_by_interface_identifier(int32_t interface_id)
{
ecm_db_iface_id_hash_t hash_index;
struct ecm_db_iface_instance *ii;
DEBUG_TRACE("Lookup database iface with interface_id %d\n", interface_id);
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_iface_id_generate_hash_index(interface_id);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_iface_id_table[hash_index];
if (ii) {
_ecm_db_iface_ref(ii);
}
spin_unlock_bh(&ecm_db_lock);
while (ii) {
struct ecm_db_iface_instance *iin;
if (ii->interface_identifier == interface_id) {
DEBUG_TRACE("iface found %p\n", ii);
return ii;
}
/*
* Try next
*/
spin_lock_bh(&ecm_db_lock);
iin = ii->iface_id_hash_next;
if (iin) {
_ecm_db_iface_ref(iin);
}
spin_unlock_bh(&ecm_db_lock);
ecm_db_iface_deref(ii);
ii = iin;
}
DEBUG_TRACE("Iface not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_iface_find_and_ref_by_interface_identifier);
/*
* ecm_db_iface_ifidx_find_and_ref_ethernet()
* Return an interface based on a MAC address and interface hlos interface identifier
*/
struct ecm_db_iface_instance *ecm_db_iface_ifidx_find_and_ref_ethernet(uint8_t *address, int32_t ifidx)
{
ecm_db_iface_hash_t hash_index;
struct ecm_db_iface_instance *ii;
DEBUG_TRACE("Lookup ethernet iface with addr %pM\n", address);
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_iface_generate_hash_index_ethernet(address);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_iface_table[hash_index];
while (ii) {
if ((ii->type != ECM_DB_IFACE_TYPE_ETHERNET)
|| memcmp(ii->type_info.ethernet.address, address, ETH_ALEN)
|| ii->interface_identifier != ifidx) {
ii = ii->hash_next;
continue;
}
_ecm_db_iface_ref(ii);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("iface found %p\n", ii);
return ii;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Iface not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_iface_ifidx_find_and_ref_ethernet);
#ifdef ECM_INTERFACE_VLAN_ENABLE
/*
* ecm_db_iface_vlan_info_get()
* Get vlan interface specific information
*/
void ecm_db_iface_vlan_info_get(struct ecm_db_iface_instance *ii, struct ecm_db_interface_info_vlan *vlan_info)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
DEBUG_ASSERT(ii->type == ECM_DB_IFACE_TYPE_VLAN, "%p: Bad type, expected vlan, actual: %d\n", ii, ii->type);
spin_lock_bh(&ecm_db_lock);
memcpy(vlan_info->address, ii->type_info.vlan.address, sizeof(ii->type_info.vlan.address));
vlan_info->vlan_tag = ii->type_info.vlan.vlan_tag;
vlan_info->vlan_tpid = ii->type_info.vlan.vlan_tpid;
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_iface_vlan_info_get);
/*
* ecm_db_iface_find_and_ref_vlan()
* Lookup and return a iface reference if any
*/
struct ecm_db_iface_instance *ecm_db_iface_find_and_ref_vlan(uint8_t *address, uint16_t vlan_tag, uint16_t vlan_tpid)
{
ecm_db_iface_hash_t hash_index;
struct ecm_db_iface_instance *ii;
DEBUG_TRACE("Lookup vlan iface with addr %pM, vlan tag: %x vlan tpid: %x\n", address, vlan_tag, vlan_tpid);
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_iface_generate_hash_index_ethernet(address);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_iface_table[hash_index];
while (ii) {
if ((ii->type != ECM_DB_IFACE_TYPE_VLAN) || (ii->type_info.vlan.vlan_tag != vlan_tag)
|| (ii->type_info.vlan.vlan_tpid != vlan_tpid)
|| memcmp(ii->type_info.vlan.address, address, ETH_ALEN)) {
ii = ii->hash_next;
continue;
}
_ecm_db_iface_ref(ii);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("iface found %p\n", ii);
return ii;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Iface not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_iface_find_and_ref_vlan);
#endif
/*
* ecm_db_iface_find_and_ref_bridge()
* Lookup and return a iface reference if any
*/
struct ecm_db_iface_instance *ecm_db_iface_find_and_ref_bridge(uint8_t *address)
{
ecm_db_iface_hash_t hash_index;
struct ecm_db_iface_instance *ii;
DEBUG_TRACE("Lookup bridge iface with addr %pM\n", address);
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_iface_generate_hash_index_ethernet(address);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_iface_table[hash_index];
while (ii) {
if ((ii->type != ECM_DB_IFACE_TYPE_BRIDGE) || memcmp(ii->type_info.bridge.address, address, ETH_ALEN)) {
ii = ii->hash_next;
continue;
}
_ecm_db_iface_ref(ii);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("iface found %p\n", ii);
return ii;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Iface not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_iface_find_and_ref_bridge);
#ifdef ECM_INTERFACE_BOND_ENABLE
/*
* ecm_db_iface_find_and_ref_lag()
* Lookup and return a iface reference if any
*/
struct ecm_db_iface_instance *ecm_db_iface_find_and_ref_lag(uint8_t *address)
{
ecm_db_iface_hash_t hash_index;
struct ecm_db_iface_instance *ii;
DEBUG_TRACE("Lookup lag iface with addr %pM\n", address);
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_iface_generate_hash_index_ethernet(address);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_iface_table[hash_index];
while (ii) {
if ((ii->type != ECM_DB_IFACE_TYPE_LAG) || memcmp(ii->type_info.lag.address, address, ETH_ALEN)) {
ii = ii->hash_next;
continue;
}
_ecm_db_iface_ref(ii);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("iface found %p\n", ii);
return ii;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Iface not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_iface_find_and_ref_lag);
#endif
#ifdef ECM_INTERFACE_PPPOE_ENABLE
/*
* ecm_db_iface_pppoe_session_info_get()
* Get pppoe interface specific information
*/
void ecm_db_iface_pppoe_session_info_get(struct ecm_db_iface_instance *ii, struct ecm_db_interface_info_pppoe *pppoe_info)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
DEBUG_ASSERT(ii->type == ECM_DB_IFACE_TYPE_PPPOE, "%p: Bad type, expected pppoe, actual: %d\n", ii, ii->type);
spin_lock_bh(&ecm_db_lock);
memcpy(pppoe_info->remote_mac, ii->type_info.pppoe.remote_mac, sizeof(ii->type_info.pppoe.remote_mac));
pppoe_info->pppoe_session_id = ii->type_info.pppoe.pppoe_session_id;
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_iface_pppoe_session_info_get);
/*
* ecm_db_iface_find_and_ref_pppoe()
* Lookup and return a iface reference if any
*/
struct ecm_db_iface_instance *ecm_db_iface_find_and_ref_pppoe(uint16_t pppoe_session_id, uint8_t *remote_mac)
{
ecm_db_iface_hash_t hash_index;
struct ecm_db_iface_instance *ii;
DEBUG_TRACE("Lookup pppoe iface with addr %x\n", pppoe_session_id);
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_iface_generate_hash_index_pppoe(pppoe_session_id);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_iface_table[hash_index];
while (ii) {
if ((ii->type != ECM_DB_IFACE_TYPE_PPPOE)
|| (ii->type_info.pppoe.pppoe_session_id != pppoe_session_id)
|| memcmp(ii->type_info.pppoe.remote_mac, remote_mac, ETH_ALEN)) {
ii = ii->hash_next;
continue;
}
_ecm_db_iface_ref(ii);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("iface found %p\n", ii);
return ii;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Iface not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_iface_find_and_ref_pppoe);
#endif
/*
* ecm_db_iface_update_ae_interface_identifier()
* update ae_interface_identifier in iface instance.
*/
void ecm_db_iface_update_ae_interface_identifier(struct ecm_db_iface_instance *ii, int32_t ae_interface_identifier)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
spin_lock_bh(&ecm_db_lock);
if (ii->ae_interface_identifier == ae_interface_identifier) {
spin_unlock_bh(&ecm_db_lock);
return;
}
ii->ae_interface_identifier = ae_interface_identifier;
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_iface_update_ae_interface_identifier);
#ifdef ECM_INTERFACE_L2TPV2_ENABLE
/*
* ecm_db_iface_pppol2tpv2_session_info_get
* get l2tpv2 specific info
*/
void ecm_db_iface_pppol2tpv2_session_info_get(struct ecm_db_iface_instance *ii, struct ecm_db_interface_info_pppol2tpv2 *pppol2tpv2_info)
{
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
DEBUG_ASSERT(ii->type == ECM_DB_IFACE_TYPE_PPPOL2TPV2, "%p: Bad type, expected pppol2tpv2, actual: %d\n", ii, ii->type);
spin_lock_bh(&ecm_db_lock);
memcpy(pppol2tpv2_info, &ii->type_info.pppol2tpv2, sizeof(struct ecm_db_interface_info_pppol2tpv2));
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_iface_pppol2tpv2_session_info_get);
/*
* ecm_db_iface_find_and_ref_pppol2tpv2()
* Lookup and return a iface reference if any
*/
struct ecm_db_iface_instance *ecm_db_iface_find_and_ref_pppol2tpv2(uint32_t pppol2tpv2_tunnel_id, uint32_t pppol2tpv2_session_id)
{
ecm_db_iface_hash_t hash_index;
struct ecm_db_iface_instance *ii;
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_iface_generate_hash_index_pppol2tpv2(pppol2tpv2_tunnel_id, pppol2tpv2_session_id);
DEBUG_TRACE("Lookup pppol2tpv2 iface with local_tunnel_id = %d, local_session_id = %d, hash = 0x%x\n", pppol2tpv2_tunnel_id,
pppol2tpv2_session_id, hash_index);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_iface_table[hash_index];
while (ii) {
if ((ii->type != ECM_DB_IFACE_TYPE_PPPOL2TPV2)
|| (ii->type_info.pppol2tpv2.l2tp.session.session_id != pppol2tpv2_session_id)
|| (ii->type_info.pppol2tpv2.l2tp.tunnel.tunnel_id != pppol2tpv2_tunnel_id)) {
ii = ii->hash_next;
continue;
}
_ecm_db_iface_ref(ii);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("iface found %p\n", ii);
return ii;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Iface not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_iface_find_and_ref_pppol2tpv2);
#endif
/*
* ecm_db_iface_find_and_ref_unknown()
* Lookup and return a iface reference if any
*/
struct ecm_db_iface_instance *ecm_db_iface_find_and_ref_unknown(uint32_t os_specific_ident)
{
ecm_db_iface_hash_t hash_index;
struct ecm_db_iface_instance *ii;
DEBUG_TRACE("Lookup unknown iface with addr %x (%u)\n", os_specific_ident, os_specific_ident);
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_iface_generate_hash_index_unknown(os_specific_ident);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_iface_table[hash_index];
while (ii) {
if ((ii->type != ECM_DB_IFACE_TYPE_UNKNOWN) || (ii->type_info.unknown.os_specific_ident != os_specific_ident)) {
ii = ii->hash_next;
continue;
}
_ecm_db_iface_ref(ii);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("iface found %p\n", ii);
return ii;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Iface not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_iface_find_and_ref_unknown);
/*
* ecm_db_iface_find_and_ref_loopback()
* Lookup and return a iface reference if any
*/
struct ecm_db_iface_instance *ecm_db_iface_find_and_ref_loopback(uint32_t os_specific_ident)
{
ecm_db_iface_hash_t hash_index;
struct ecm_db_iface_instance *ii;
DEBUG_TRACE("Lookup loopback iface with addr %x (%u)\n", os_specific_ident, os_specific_ident);
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_iface_generate_hash_index_loopback(os_specific_ident);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_iface_table[hash_index];
while (ii) {
if ((ii->type != ECM_DB_IFACE_TYPE_LOOPBACK) || (ii->type_info.loopback.os_specific_ident != os_specific_ident)) {
ii = ii->hash_next;
continue;
}
_ecm_db_iface_ref(ii);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("iface found %p\n", ii);
return ii;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Iface not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_iface_find_and_ref_loopback);
#ifdef ECM_INTERFACE_IPSEC_ENABLE
/*
* ecm_db_iface_find_and_ref_ipsec_tunnel()
* Lookup and return a iface reference if any.
* GGG TODO Flesh this out using tunnel endpoint keys
*/
struct ecm_db_iface_instance *ecm_db_iface_find_and_ref_ipsec_tunnel(uint32_t os_specific_ident)
{
ecm_db_iface_hash_t hash_index;
struct ecm_db_iface_instance *ii;
DEBUG_TRACE("Lookup ipsec_tunnel iface with addr %x (%u)\n", os_specific_ident, os_specific_ident);
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_iface_generate_hash_index_ipsec_tunnel(os_specific_ident);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_iface_table[hash_index];
while (ii) {
if ((ii->type != ECM_DB_IFACE_TYPE_IPSEC_TUNNEL) || (ii->type_info.ipsec_tunnel.os_specific_ident != os_specific_ident)) {
ii = ii->hash_next;
continue;
}
_ecm_db_iface_ref(ii);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("iface found %p\n", ii);
return ii;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Iface not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_iface_find_and_ref_ipsec_tunnel);
#endif
#ifdef ECM_INTERFACE_SIT_ENABLE
/*
* ecm_db_iface_find_and_ref_sit()
* Lookup and return a iface reference if any
*/
struct ecm_db_iface_instance *ecm_db_iface_find_and_ref_sit(ip_addr_t saddr, ip_addr_t daddr)
{
ecm_db_iface_hash_t hash_index;
struct ecm_db_iface_instance *ii;
DEBUG_TRACE("Lookup sit (6-in-4) iface with saddr: " ECM_IP_ADDR_OCTAL_FMT ", daddr: " ECM_IP_ADDR_OCTAL_FMT "\n",
ECM_IP_ADDR_TO_OCTAL(saddr), ECM_IP_ADDR_TO_OCTAL(daddr));
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_iface_generate_hash_index_sit(saddr, daddr);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_iface_table[hash_index];
while (ii) {
if ((ii->type != ECM_DB_IFACE_TYPE_SIT)
|| !ECM_IP_ADDR_MATCH(ii->type_info.sit.saddr, saddr)
|| !ECM_IP_ADDR_MATCH(ii->type_info.sit.daddr, daddr)) {
ii = ii->hash_next;
continue;
}
_ecm_db_iface_ref(ii);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("iface found %p\n", ii);
return ii;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Iface not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_iface_find_and_ref_sit);
#endif
#ifdef ECM_INTERFACE_TUNIPIP6_ENABLE
#ifdef ECM_IPV6_ENABLE
/*
* ecm_db_iface_find_and_ref_tunipip6()
* Lookup and return a iface reference if any
*/
struct ecm_db_iface_instance *ecm_db_iface_find_and_ref_tunipip6(ip_addr_t saddr, ip_addr_t daddr)
{
ecm_db_iface_hash_t hash_index;
struct ecm_db_iface_instance *ii;
DEBUG_TRACE("Lookup TUNIPIP6 iface with saddr: " ECM_IP_ADDR_OCTAL_FMT ", daddr: " ECM_IP_ADDR_OCTAL_FMT "\n",
ECM_IP_ADDR_TO_OCTAL(saddr), ECM_IP_ADDR_TO_OCTAL(daddr));
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_iface_generate_hash_index_tunipip6(saddr, daddr);
/*
* Iterate the chain looking for a host with matching details
*/
spin_lock_bh(&ecm_db_lock);
ii = ecm_db_iface_table[hash_index];
while (ii) {
if ((ii->type != ECM_DB_IFACE_TYPE_TUNIPIP6)
|| !ECM_IP_ADDR_MATCH(ii->type_info.tunipip6.saddr, saddr)
|| !ECM_IP_ADDR_MATCH(ii->type_info.tunipip6.daddr, daddr)) {
ii = ii->hash_next;
continue;
}
_ecm_db_iface_ref(ii);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("iface found %p\n", ii);
return ii;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Iface not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_iface_find_and_ref_tunipip6);
#endif
#endif
/*
* ecm_db_mapping_find_and_ref()
* Lookup and return a mapping reference if any.
*
* NOTE: For non-port based protocols the ports are expected to be -(protocol)
*/
struct ecm_db_mapping_instance *ecm_db_mapping_find_and_ref(ip_addr_t address, int port)
{
ecm_db_mapping_hash_t hash_index;
struct ecm_db_mapping_instance *mi;
DEBUG_TRACE("Lookup mapping with addr " ECM_IP_ADDR_OCTAL_FMT " and port %d\n", ECM_IP_ADDR_TO_OCTAL(address), port);
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_mapping_generate_hash_index(address, port);
/*
* Iterate the chain looking for a mapping with matching details
*/
spin_lock_bh(&ecm_db_lock);
mi = ecm_db_mapping_table[hash_index];
while (mi) {
if (mi->port != port) {
mi = mi->hash_next;
continue;
}
if (!ECM_IP_ADDR_MATCH(mi->host->address, address)) {
mi = mi->hash_next;
continue;
}
_ecm_db_mapping_ref(mi);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Mapping found %p\n", mi);
return mi;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Mapping not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_mapping_find_and_ref);
/*
* ecm_db_connection_find_and_ref_chain()
* Given a hash chain index locate the connection
*/
static struct ecm_db_connection_instance *ecm_db_connection_find_and_ref_chain(ecm_db_connection_hash_t hash_index,
ip_addr_t host1_addr, ip_addr_t host2_addr,
int protocol, int host1_port, int host2_port)
{
struct ecm_db_connection_instance *ci;
/*
* Iterate the chain looking for a connection with matching details
*/
spin_lock_bh(&ecm_db_lock);
ci = ecm_db_connection_table[hash_index];
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
while (ci) {
struct ecm_db_connection_instance *cin;
/*
* The use of unlikely() is liberally used because under fast-hit scenarios the connection would always be at the start of a chain
*/
if (unlikely(ci->protocol != protocol)) {
goto try_next;
}
if (unlikely(!ECM_IP_ADDR_MATCH(host1_addr, ci->mapping_from->host->address))) {
goto try_reverse;
}
if (unlikely(host1_port != ci->mapping_from->port)) {
goto try_reverse;
}
if (unlikely(!ECM_IP_ADDR_MATCH(host2_addr, ci->mapping_to->host->address))) {
goto try_reverse;
}
if (unlikely(host2_port != ci->mapping_to->port)) {
goto try_reverse;
}
goto connection_found;
try_reverse:
if (unlikely(!ECM_IP_ADDR_MATCH(host1_addr, ci->mapping_to->host->address))) {
goto try_next;
}
if (unlikely(host1_port != ci->mapping_to->port)) {
goto try_next;
}
if (unlikely(!ECM_IP_ADDR_MATCH(host2_addr, ci->mapping_from->host->address))) {
goto try_next;
}
if (unlikely(host2_port != ci->mapping_from->port)) {
goto try_next;
}
goto connection_found;
try_next:
spin_lock_bh(&ecm_db_lock);
cin = ci->hash_next;
if (cin) {
_ecm_db_connection_ref(cin);
}
spin_unlock_bh(&ecm_db_lock);
ecm_db_connection_deref(ci);
ci = cin;
}
DEBUG_TRACE("Connection not found in hash chain\n");
return NULL;
connection_found:
DEBUG_TRACE("Connection found %p\n", ci);
/*
* Move this connection to the head of the hash chain.
* This will win for us with heavy hit connections - we bubble MRU to the front of the list to
* avoid too much chain walking.
*/
spin_lock_bh(&ecm_db_lock);
if (!ci->hash_prev) {
/*
* No prev pointer - ci is at the head of the list already
*/
DEBUG_ASSERT(ecm_db_connection_table[hash_index] == ci, "%p: hash table bad\n", ci);
spin_unlock_bh(&ecm_db_lock);
return ci;
}
/*
* Link out
*/
ci->hash_prev->hash_next = ci->hash_next;
if (ci->hash_next) {
ci->hash_next->hash_prev = ci->hash_prev;
}
/*
* Re-insert at the head.
* NOTE: We know that there is a head already that is different to ci.
*/
ci->hash_next = ecm_db_connection_table[hash_index];
ecm_db_connection_table[hash_index]->hash_prev = ci;
ecm_db_connection_table[hash_index] = ci;
ci->hash_prev = NULL;
spin_unlock_bh(&ecm_db_lock);
return ci;
}
/*
* ecm_db_connection_find_and_ref()
* Locate a connection instance based on addressing, protocol and optional port information.
*
* NOTE: For non-port based protocols then ports are expected to be -(protocol).
*/
struct ecm_db_connection_instance *ecm_db_connection_find_and_ref(ip_addr_t host1_addr, ip_addr_t host2_addr, int protocol, int host1_port, int host2_port)
{
ecm_db_connection_hash_t hash_index;
DEBUG_TRACE("Lookup connection " ECM_IP_ADDR_OCTAL_FMT ":%d <> " ECM_IP_ADDR_OCTAL_FMT ":%d protocol %d\n", ECM_IP_ADDR_TO_OCTAL(host1_addr), host1_port, ECM_IP_ADDR_TO_OCTAL(host2_addr), host2_port, protocol);
/*
* Compute the hash chain index and prepare to walk the chain
*/
hash_index = ecm_db_connection_generate_hash_index(host1_addr, host1_port, host2_addr, host2_port, protocol);
return ecm_db_connection_find_and_ref_chain(hash_index, host1_addr, host2_addr, protocol, host1_port, host2_port);
}
EXPORT_SYMBOL(ecm_db_connection_find_and_ref);
/*
* ecm_db_connection_serial_find_and_ref()
* Locate a connection instance based on serial if it still exists
*/
struct ecm_db_connection_instance *ecm_db_connection_serial_find_and_ref(uint32_t serial)
{
ecm_db_connection_serial_hash_t serial_hash_index;
struct ecm_db_connection_instance *ci;
DEBUG_TRACE("Lookup connection serial: %u\n", serial);
/*
* Compute the hash chain index and prepare to walk the chain
*/
serial_hash_index = ecm_db_connection_generate_serial_hash_index(serial);
/*
* Iterate the chain looking for a connection with matching serial
*/
spin_lock_bh(&ecm_db_lock);
ci = ecm_db_connection_serial_table[serial_hash_index];
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
while (ci) {
struct ecm_db_connection_instance *cin;
/*
* The use of likely() is used because under fast-hit scenarios the connection would always be at the start of a chain
*/
if (likely(ci->serial == serial)) {
goto connection_found;
}
/*
* Try next
*/
spin_lock_bh(&ecm_db_lock);
cin = ci->serial_hash_next;
if (cin) {
_ecm_db_connection_ref(cin);
}
spin_unlock_bh(&ecm_db_lock);
ecm_db_connection_deref(ci);
ci = cin;
}
DEBUG_TRACE("Connection not found\n");
return NULL;
connection_found:
DEBUG_TRACE("Connection found %p\n", ci);
/*
* Move this connection to the head of the hash chain.
* This will win for us with heavy hit connections - we bubble MRU to the front of the list to
* avoid too much chain walking.
*/
spin_lock_bh(&ecm_db_lock);
if (!ci->serial_hash_prev) {
/*
* No prev pointer - ci is at the head of the list already
*/
DEBUG_ASSERT(ecm_db_connection_serial_table[serial_hash_index] == ci, "%p: hash table bad\n", ci);
spin_unlock_bh(&ecm_db_lock);
return ci;
}
/*
* Link out
*/
ci->serial_hash_prev->serial_hash_next = ci->serial_hash_next;
if (ci->serial_hash_next) {
ci->serial_hash_next->serial_hash_prev = ci->serial_hash_prev;
}
/*
* Re-insert at the head.
* NOTE: We know that there is a head already that is different to ci.
*/
ci->serial_hash_next = ecm_db_connection_serial_table[serial_hash_index];
ecm_db_connection_serial_table[serial_hash_index]->serial_hash_prev = ci;
ecm_db_connection_serial_table[serial_hash_index] = ci;
ci->serial_hash_prev = NULL;
spin_unlock_bh(&ecm_db_lock);
return ci;
}
EXPORT_SYMBOL(ecm_db_connection_serial_find_and_ref);
/*
* ecm_db_connection_node_to_get_and_ref()
* Return node reference
*/
struct ecm_db_node_instance *ecm_db_connection_node_to_get_and_ref(struct ecm_db_connection_instance *ci)
{
struct ecm_db_node_instance *ni;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
ni = ci->to_node;
DEBUG_CHECK_MAGIC(ni, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed\n", ni);
_ecm_db_node_ref(ni);
spin_unlock_bh(&ecm_db_lock);
return ni;
}
EXPORT_SYMBOL(ecm_db_connection_node_to_get_and_ref);
/*
* ecm_db_connection_node_from_get_and_ref()
* Return node reference
*/
struct ecm_db_node_instance *ecm_db_connection_node_from_get_and_ref(struct ecm_db_connection_instance *ci)
{
struct ecm_db_node_instance *ni;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
ni = ci->from_node;
_ecm_db_node_ref(ni);
spin_unlock_bh(&ecm_db_lock);
return ni;
}
EXPORT_SYMBOL(ecm_db_connection_node_from_get_and_ref);
#ifdef ECM_DB_XREF_ENABLE
/*
* ecm_db_mapping_connections_from_get_and_ref_first()
* Return a reference to the first connection made from this mapping
*/
struct ecm_db_connection_instance *ecm_db_mapping_connections_from_get_and_ref_first(struct ecm_db_mapping_instance *mi)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", mi);
spin_lock_bh(&ecm_db_lock);
ci = mi->from_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
EXPORT_SYMBOL(ecm_db_mapping_connections_from_get_and_ref_first);
/*
* ecm_db_mapping_connections_to_get_and_ref_first()
* Return a reference to the first connection made to this mapping
*/
struct ecm_db_connection_instance *ecm_db_mapping_connections_to_get_and_ref_first(struct ecm_db_mapping_instance *mi)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", mi);
spin_lock_bh(&ecm_db_lock);
ci = mi->to_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
EXPORT_SYMBOL(ecm_db_mapping_connections_to_get_and_ref_first);
/*
* ecm_db_mapping_connections_nat_from_get_and_ref_first()
* Return a reference to the first NAT connection made from this mapping
*/
struct ecm_db_connection_instance *ecm_db_mapping_connections_nat_from_get_and_ref_first(struct ecm_db_mapping_instance *mi)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", mi);
spin_lock_bh(&ecm_db_lock);
ci = mi->from_nat_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
EXPORT_SYMBOL(ecm_db_mapping_connections_nat_from_get_and_ref_first);
/*
* ecm_db_mapping_connections_nat_to_get_and_ref_first()
* Return a reference to the first NAT connection made to this mapping
*/
struct ecm_db_connection_instance *ecm_db_mapping_connections_nat_to_get_and_ref_first(struct ecm_db_mapping_instance *mi)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed", mi);
spin_lock_bh(&ecm_db_lock);
ci = mi->to_nat_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
EXPORT_SYMBOL(ecm_db_mapping_connections_nat_to_get_and_ref_first);
/*
* ecm_db_connection_mapping_from_get_and_ref_next()
* Return reference to next connection in from mapping chain
*/
struct ecm_db_connection_instance *ecm_db_connection_mapping_from_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *nci;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
nci = ci->from_next;
if (nci) {
_ecm_db_connection_ref(nci);
}
spin_unlock_bh(&ecm_db_lock);
return nci;
}
EXPORT_SYMBOL(ecm_db_connection_mapping_from_get_and_ref_next);
/*
* ecm_db_connection_mapping_to_get_and_ref_next()
* Return reference to next connection in to mapping chain
*/
struct ecm_db_connection_instance *ecm_db_connection_mapping_to_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *nci;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
nci = ci->to_next;
if (nci) {
_ecm_db_connection_ref(nci);
}
spin_unlock_bh(&ecm_db_lock);
return nci;
}
EXPORT_SYMBOL(ecm_db_connection_mapping_to_get_and_ref_next);
/*
* ecm_db_connection_mapping_nat_from_get_and_ref_next()
* Return reference to next connection in from NAT mapping chain
*/
struct ecm_db_connection_instance *ecm_db_connection_mapping_nat_from_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *nci;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
nci = ci->from_nat_next;
if (nci) {
_ecm_db_connection_ref(nci);
}
spin_unlock_bh(&ecm_db_lock);
return nci;
}
EXPORT_SYMBOL(ecm_db_connection_mapping_nat_from_get_and_ref_next);
/*
* ecm_db_connection_mapping_nat_to_get_and_ref_next()
* Return reference to next connection in to NAT mapping chain
*/
struct ecm_db_connection_instance *ecm_db_connection_mapping_nat_to_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *nci;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
nci = ci->to_nat_next;
if (nci) {
_ecm_db_connection_ref(nci);
}
spin_unlock_bh(&ecm_db_lock);
return nci;
}
EXPORT_SYMBOL(ecm_db_connection_mapping_nat_to_get_and_ref_next);
/*
* ecm_db_iface_connections_from_get_and_ref_first()
* Return a reference to the first connection made from this iface
*/
struct ecm_db_connection_instance *ecm_db_iface_connections_from_get_and_ref_first(struct ecm_db_iface_instance *ii)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
spin_lock_bh(&ecm_db_lock);
ci = ii->from_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
EXPORT_SYMBOL(ecm_db_iface_connections_from_get_and_ref_first);
/*
* ecm_db_iface_connections_to_get_and_ref_first()
* Return a reference to the first connection made to this iface
*/
struct ecm_db_connection_instance *ecm_db_iface_connections_to_get_and_ref_first(struct ecm_db_iface_instance *ii)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
spin_lock_bh(&ecm_db_lock);
ci = ii->to_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
EXPORT_SYMBOL(ecm_db_iface_connections_to_get_and_ref_first);
/*
* ecm_db_iface_connections_nat_from_get_and_ref_first()
* Return a reference to the first NAT connection made from this iface
*/
struct ecm_db_connection_instance *ecm_db_iface_connections_nat_from_get_and_ref_first(struct ecm_db_iface_instance *ii)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
spin_lock_bh(&ecm_db_lock);
ci = ii->from_nat_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
EXPORT_SYMBOL(ecm_db_iface_connections_nat_from_get_and_ref_first);
/*
* ecm_db_iface_connections_nat_to_get_and_ref_first()
* Return a reference to the first NAT connection made to this iface
*/
struct ecm_db_connection_instance *ecm_db_iface_connections_nat_to_get_and_ref_first(struct ecm_db_iface_instance *ii)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
spin_lock_bh(&ecm_db_lock);
ci = ii->to_nat_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
EXPORT_SYMBOL(ecm_db_iface_connections_nat_to_get_and_ref_first);
/*
* ecm_db_connection_iface_from_get_and_ref_next()
* Return reference to next connection in from iface chain
*/
struct ecm_db_connection_instance *ecm_db_connection_iface_from_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *nci;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
nci = ci->iface_from_next;
if (nci) {
_ecm_db_connection_ref(nci);
}
spin_unlock_bh(&ecm_db_lock);
return nci;
}
EXPORT_SYMBOL(ecm_db_connection_iface_from_get_and_ref_next);
/*
* ecm_db_connection_iface_to_get_and_ref_next()
* Return reference to next connection in to iface chain
*/
struct ecm_db_connection_instance *ecm_db_connection_iface_to_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *nci;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
nci = ci->iface_to_next;
if (nci) {
_ecm_db_connection_ref(nci);
}
spin_unlock_bh(&ecm_db_lock);
return nci;
}
EXPORT_SYMBOL(ecm_db_connection_iface_to_get_and_ref_next);
/*
* ecm_db_connection_iface_nat_from_get_and_ref_next()
* Return reference to next connection in from NAT iface chain
*/
struct ecm_db_connection_instance *ecm_db_connection_iface_nat_from_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *nci;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
nci = ci->iface_from_nat_next;
if (nci) {
_ecm_db_connection_ref(nci);
}
spin_unlock_bh(&ecm_db_lock);
return nci;
}
EXPORT_SYMBOL(ecm_db_connection_iface_nat_from_get_and_ref_next);
/*
* ecm_db_connection_iface_nat_to_get_and_ref_next()
* Return reference to next connection in to NAT iface chain
*/
struct ecm_db_connection_instance *ecm_db_connection_iface_nat_to_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *nci;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
nci = ci->iface_to_nat_next;
if (nci) {
_ecm_db_connection_ref(nci);
}
spin_unlock_bh(&ecm_db_lock);
return nci;
}
EXPORT_SYMBOL(ecm_db_connection_iface_nat_to_get_and_ref_next);
/*
* ecm_db_iface_nodes_get_and_ref_first()
* Return a reference to the first node made from this iface
*/
struct ecm_db_node_instance *ecm_db_iface_nodes_get_and_ref_first(struct ecm_db_iface_instance *ii)
{
struct ecm_db_node_instance *ni;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii);
spin_lock_bh(&ecm_db_lock);
ni = ii->nodes;
if (ni) {
_ecm_db_node_ref(ni);
}
spin_unlock_bh(&ecm_db_lock);
return ni;
}
EXPORT_SYMBOL(ecm_db_iface_nodes_get_and_ref_first);
/*
* ecm_db_iface_node_count_get()
* Return the number of nodes to this iface
*/
int ecm_db_iface_node_count_get(struct ecm_db_iface_instance *ii)
{
int count;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
spin_lock_bh(&ecm_db_lock);
count = ii->node_count;
spin_unlock_bh(&ecm_db_lock);
return count;
}
EXPORT_SYMBOL(ecm_db_iface_node_count_get);
/*
* ecm_db_host_mapping_count_get()
* Return the number of mappings to this host
*/
int ecm_db_host_mapping_count_get(struct ecm_db_host_instance *hi)
{
int count;
DEBUG_CHECK_MAGIC(hi, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed\n", hi);
spin_lock_bh(&ecm_db_lock);
count = hi->mapping_count;
spin_unlock_bh(&ecm_db_lock);
return count;
}
EXPORT_SYMBOL(ecm_db_host_mapping_count_get);
#endif
/*
* ecm_db_mapping_host_get_and_ref()
*/
struct ecm_db_host_instance *ecm_db_mapping_host_get_and_ref(struct ecm_db_mapping_instance *mi)
{
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed\n", mi);
spin_lock_bh(&ecm_db_lock);
_ecm_db_host_ref(mi->host);
spin_unlock_bh(&ecm_db_lock);
return mi->host;
}
EXPORT_SYMBOL(ecm_db_mapping_host_get_and_ref);
/*
* ecm_db_node_iface_get_and_ref()
*/
struct ecm_db_iface_instance *ecm_db_node_iface_get_and_ref(struct ecm_db_node_instance *ni)
{
DEBUG_CHECK_MAGIC(ni, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed\n", ni);
spin_lock_bh(&ecm_db_lock);
_ecm_db_iface_ref(ni->iface);
spin_unlock_bh(&ecm_db_lock);
return ni->iface;
}
EXPORT_SYMBOL(ecm_db_node_iface_get_and_ref);
/*
* ecm_db_mapping_connections_total_count_get()
* Return the total number of connections (NAT and non-NAT) this mapping has
*/
int ecm_db_mapping_connections_total_count_get(struct ecm_db_mapping_instance *mi)
{
int count;
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed\n", mi);
spin_lock_bh(&ecm_db_lock);
count = mi->from + mi->to + mi->nat_from + mi->nat_to;
DEBUG_ASSERT(count >= 0, "%p: Count overflow from: %d, to: %d, nat_from: %d, nat_to: %d\n", mi, mi->from, mi->to, mi->nat_from, mi->nat_to);
spin_unlock_bh(&ecm_db_lock);
return count;
}
EXPORT_SYMBOL(ecm_db_mapping_connections_total_count_get);
/*
* ecm_db_connection_mapping_from_get_and_ref()
* Return a reference to the from mapping of the connection
*/
struct ecm_db_mapping_instance *ecm_db_connection_mapping_from_get_and_ref(struct ecm_db_connection_instance *ci)
{
struct ecm_db_mapping_instance *mi;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
mi = ci->mapping_from;
_ecm_db_mapping_ref(mi);
spin_unlock_bh(&ecm_db_lock);
return mi;
}
EXPORT_SYMBOL(ecm_db_connection_mapping_from_get_and_ref);
/*
* ecm_db_connection_mapping_nat_from_get_and_ref()
* Return a reference to the from NAT mapping of the connection
*/
struct ecm_db_mapping_instance *ecm_db_connection_mapping_nat_from_get_and_ref(struct ecm_db_connection_instance *ci)
{
struct ecm_db_mapping_instance *mi;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
mi = ci->mapping_nat_from;
_ecm_db_mapping_ref(mi);
spin_unlock_bh(&ecm_db_lock);
return mi;
}
EXPORT_SYMBOL(ecm_db_connection_mapping_nat_from_get_and_ref);
/*
* ecm_db_connection_mapping_to_get_and_ref()
* Return a reference to the from mapping of the connection
*/
struct ecm_db_mapping_instance *ecm_db_connection_mapping_to_get_and_ref(struct ecm_db_connection_instance *ci)
{
struct ecm_db_mapping_instance *mi;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
mi = ci->mapping_to;
_ecm_db_mapping_ref(mi);
spin_unlock_bh(&ecm_db_lock);
return mi;
}
EXPORT_SYMBOL(ecm_db_connection_mapping_to_get_and_ref);
/*
* ecm_db_connection_mapping_to_nat_get_and_ref()
* Return a reference to the from NAT mapping of the connection
*/
struct ecm_db_mapping_instance *ecm_db_connection_mapping_nat_to_get_and_ref(struct ecm_db_connection_instance *ci)
{
struct ecm_db_mapping_instance *mi;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
mi = ci->mapping_nat_to;
_ecm_db_mapping_ref(mi);
spin_unlock_bh(&ecm_db_lock);
return mi;
}
EXPORT_SYMBOL(ecm_db_connection_mapping_nat_to_get_and_ref);
/*
* ecm_db_timer_groups_check()
* Check for expired group entries, returns the number that have expired
*/
static uint32_t ecm_db_timer_groups_check(uint32_t time_now)
{
ecm_db_timer_group_t i;
uint32_t expired = 0;
DEBUG_TRACE("Timer groups check start %u\n", time_now);
/*
* Examine all timer groups for expired entries.
*/
for (i = 0; i < ECM_DB_TIMER_GROUPS_MAX; ++i) {
struct ecm_db_timer_group *timer_group;
/*
* The group tail tracks the oldest entry so that is what we examine.
*/
timer_group = &ecm_db_timer_groups[i];
spin_lock_bh(&ecm_db_lock);
while (timer_group->tail) {
struct ecm_db_timer_group_entry *tge;
tge = timer_group->tail;
if (tge->timeout > time_now) {
/*
* Not expired - and no further will be as they are in order
*/
break;
}
/*
* Has expired - remove the entry from the list and invoke the callback
* NOTE: We know the entry is at the tail of the group
*/
if (tge->prev) {
tge->prev->next = NULL;
} else {
/*
* First in the group
*/
DEBUG_ASSERT(timer_group->head == tge, "%p: bad head, expecting %p got %p\n", timer_group, tge, timer_group->head);
timer_group->head = NULL;
}
timer_group->tail = tge->prev;
tge->group = ECM_DB_TIMER_GROUPS_MAX;
spin_unlock_bh(&ecm_db_lock);
expired++;
DEBUG_TRACE("%p: Expired\n", tge);
tge->fn(tge->arg);
spin_lock_bh(&ecm_db_lock);
}
spin_unlock_bh(&ecm_db_lock);
}
spin_lock_bh(&ecm_db_lock);
time_now = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Timer groups check end %u, expired count %u\n", time_now, expired);
return expired;
}
/*
* ecm_db_connection_classifier_assign()
* Assign a classifier to the connection assigned classifier list.
*
* This adds the classifier in the ci->assignments list in ascending priority order according to the classifier type.
* Only assigned classifiers are in this list, allowing fast retrival of current assignments, avoiding the need to skip over unassigned classifiers.
* Because there is only one of each type of classifier the classifier is also recorded in an array, the position in which is its type value.
* This allows fast lookup based on type too.
* Further, the connection is recorded in the classifier type assignment array too, this permits iterating of all connections that are assigned to a TYPE of classifier.
*/
void ecm_db_connection_classifier_assign(struct ecm_db_connection_instance *ci, struct ecm_classifier_instance *new_ca)
{
struct ecm_classifier_instance *ca;
struct ecm_classifier_instance *ca_prev;
ecm_classifier_type_t new_ca_type;
#ifdef ECM_DB_CTA_TRACK_ENABLE
struct ecm_db_connection_classifier_type_assignment *ta;
struct ecm_db_connection_classifier_type_assignment_list *tal;
#endif
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
/*
* Get the type (which is also used as the priority)
*/
new_ca_type = new_ca->type_get(new_ca);
/*
* Connection holds ref to the classifier
*/
new_ca->ref(new_ca);
/*
* Find place to insert the classifier
*/
spin_lock_bh(&ecm_db_lock);
ca = ci->assignments;
ca_prev = NULL;
while (ca) {
ecm_classifier_type_t ca_type;
ca_type = ca->type_get(ca);
/*
* If new ca is less important that the current assigned classifier insert here
*/
if (new_ca_type < ca_type) {
break;
}
ca_prev = ca;
ca = ca->ca_next;
}
/*
* Insert new_ca before ca and after ca_prev.
*/
new_ca->ca_prev = ca_prev;
if (ca_prev) {
ca_prev->ca_next = new_ca;
} else {
DEBUG_ASSERT(ci->assignments == ca, "%p: Bad assigmnment list, expecting: %p, got: %p\n", ci, ca, ci->assignments);
ci->assignments = new_ca;
}
new_ca->ca_next = ca;
if (ca) {
ca->ca_prev = new_ca;
}
/*
* Insert based on type too
*/
DEBUG_ASSERT(ci->assignments_by_type[new_ca_type] == NULL, "%p: Only one of each type: %d may be registered, new: %p, existing, %p\n",
ci, new_ca_type, new_ca, ci->assignments_by_type[new_ca_type]);
ci->assignments_by_type[new_ca_type] = new_ca;
#ifdef ECM_DB_CTA_TRACK_ENABLE
/*
* Add the connection into the type assignment list too.
*/
ta = &ci->type_assignment[new_ca_type];
if (ta->pending_unassign) {
/*
* The connection is pending unassignment / removal from list, but since it has been
* re-assigned to the same type of classifier we can just clear the flag and avoid the removal.
* NOTE: pending_unassign is only ever true if the iteration count is non-zero i.e. iteration is in progress.
*/
DEBUG_CHECK_MAGIC(ta, ECM_DB_CLASSIFIER_TYPE_ASSIGNMENT_MAGIC, "%p: magic failed, ci: %p", ta, ci);
DEBUG_ASSERT(ta->iteration_count != 0, "%p: Bad pending_unassign: type: %d, Iteration count zero\n", ci, new_ca_type);
ta->pending_unassign = false;
spin_unlock_bh(&ecm_db_lock);
return;
}
/*
* iteration_count should be zero as there should not be a duplicate assignment of the same type.
* This is because if iteration_count was non-zero then pending_unassign should have been true.
*/
DEBUG_ASSERT(ta->iteration_count == 0, "%p: Type: %d, Iteration count not zero: %d\n", ci, new_ca_type, ta->iteration_count);
/*
* Insert the connection into the classifier type assignment list, at the head
*/
tal = &ecm_db_connection_classifier_type_assignments[new_ca_type];
ta->next = tal->type_assignments_list;
ta->prev = NULL;
/*
* If there is an existing head, it is no longer the head
*/
if (tal->type_assignments_list) {
struct ecm_db_connection_classifier_type_assignment *talh;
talh = &tal->type_assignments_list->type_assignment[new_ca_type];
talh->prev = ci;
}
/*
* Set new head
*/
tal->type_assignments_list = ci;
/*
* Set magic
*/
DEBUG_SET_MAGIC(ta, ECM_DB_CLASSIFIER_TYPE_ASSIGNMENT_MAGIC);
/*
* Increment assignment count
*/
tal->type_assignment_count++;
DEBUG_ASSERT(tal->type_assignment_count > 0, "Bad iteration count: %d\n", tal->type_assignment_count);
#endif
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_connection_classifier_assign);
/*
* ecm_db_connection_classifier_assignments_get_and_ref()
* Populate the given array with references to the currently assigned classifiers.
*
* This function returns the number of assignments starting from [0].
* [0] is the lowest priority classifier, [return_val - 1] is the highest priority.
* Release each classifier when you are done, for convenience use ecm_db_connection_assignments_release().
*
* NOTE: The array also contains the default classifier too which of course will always be at [0]
*
* WARNING: The array MUST be of size ECM_CLASSIFIER_TYPES.
*/
int ecm_db_connection_classifier_assignments_get_and_ref(struct ecm_db_connection_instance *ci, struct ecm_classifier_instance *assignments[])
{
int aci_count;
struct ecm_classifier_instance *aci;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
aci_count = 0;
spin_lock_bh(&ecm_db_lock);
aci = ci->assignments;
while (aci) {
aci->ref(aci);
assignments[aci_count++] = aci;
aci = aci->ca_next;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_ASSERT(aci_count >= 1, "%p: Must have at least default classifier!\n", ci);
return aci_count;
}
EXPORT_SYMBOL(ecm_db_connection_classifier_assignments_get_and_ref);
/*
* ecm_db_connection_assignments_release()
* Release references to classifiers in the assignments array
*/
void ecm_db_connection_assignments_release(int assignment_count, struct ecm_classifier_instance *assignments[])
{
int i;
for (i = 0; i < assignment_count; ++i) {
struct ecm_classifier_instance *aci = assignments[i];
if (aci) {
aci->deref(aci);
}
}
}
EXPORT_SYMBOL(ecm_db_connection_assignments_release);
/*
* ecm_db_connection_assigned_classifier_find_and_ref()
* Return a ref to classifier of the requested type, if found
*/
struct ecm_classifier_instance *ecm_db_connection_assigned_classifier_find_and_ref(struct ecm_db_connection_instance *ci, ecm_classifier_type_t type)
{
struct ecm_classifier_instance *ca;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
ca = ci->assignments_by_type[type];
if (ca) {
ca->ref(ca);
}
spin_unlock_bh(&ecm_db_lock);
return ca;
}
EXPORT_SYMBOL(ecm_db_connection_assigned_classifier_find_and_ref);
/*
* ecm_db_connection_classifier_unassign()
* Unassign a classifier
*
* The default classifier cannot be unassigned.
*/
void ecm_db_connection_classifier_unassign(struct ecm_db_connection_instance *ci, struct ecm_classifier_instance *cci)
{
ecm_classifier_type_t ca_type;
#ifdef ECM_DB_CTA_TRACK_ENABLE
struct ecm_db_connection_classifier_type_assignment *ta;
#endif
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
DEBUG_ASSERT(cci->type_get(cci) != ECM_CLASSIFIER_TYPE_DEFAULT, "%p: Cannot unassign default", ci);
/*
* Get the type
*/
ca_type = cci->type_get(cci);
DEBUG_TRACE("%p: Unassign type: %d, classifier: %p\n", ci, ca_type, cci);
spin_lock_bh(&ecm_db_lock);
/*
* Remove from assignments_by_type
* NOTE: It is possible that in SMP this classifier has already been unassigned.
*/
if (ci->assignments_by_type[ca_type] == NULL) {
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("%p: Classifier type: %d already unassigned\n", ci, ca_type);
return;
}
ci->assignments_by_type[ca_type] = NULL;
/*
* Link out of assignments list
*/
if (cci->ca_prev) {
cci->ca_prev->ca_next = cci->ca_next;
} else {
DEBUG_ASSERT(ci->assignments == cci, "%p: Bad assigmnment list, expecting: %p, got: %p", ci, cci, ci->assignments);
ci->assignments = cci->ca_next;
}
if (cci->ca_next) {
cci->ca_next->ca_prev = cci->ca_prev;
}
#ifdef ECM_DB_CTA_TRACK_ENABLE
/*
* Remove from the classifier type assignment list
*/
ta = &ci->type_assignment[ca_type];
DEBUG_CHECK_MAGIC(ta, ECM_DB_CLASSIFIER_TYPE_ASSIGNMENT_MAGIC, "%p: magic failed, ci: %p", ta, ci);
if (ta->iteration_count > 0) {
/*
* The list entry is being iterated outside of db lock being held.
* We cannot remove this entry since it would mess up iteration.
* Set the pending flag to be actioned another time
*/
ta->pending_unassign = true;
spin_unlock_bh(&ecm_db_lock);
cci->deref(cci);
return;
}
/*
* Remove the list entry
*/
DEBUG_INFO("%p: Remove type assignment: %d\n", ci, ca_type);
_ecm_db_classifier_type_assignment_remove(ci, ca_type);
#endif
spin_unlock_bh(&ecm_db_lock);
cci->deref(cci);
}
EXPORT_SYMBOL(ecm_db_connection_classifier_unassign);
/*
* ecm_db_connection_classifier_default_get_and_ref()
* Get a reference to default classifier associated with this connection
*/
struct ecm_classifier_default_instance *ecm_db_connection_classifier_default_get_and_ref(struct ecm_db_connection_instance *ci)
{
struct ecm_classifier_default_instance *dci;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
/*
* No need to lock this object - it cannot change
*/
dci = (struct ecm_classifier_default_instance *)ci->assignments_by_type[ECM_CLASSIFIER_TYPE_DEFAULT];
DEBUG_ASSERT(dci, "%p: No default classifier!\n", ci);
dci->base.ref((struct ecm_classifier_instance *)dci);
return dci;
}
EXPORT_SYMBOL(ecm_db_connection_classifier_default_get_and_ref);
#ifdef ECM_DB_CTA_TRACK_ENABLE
/*
* ecm_db_connection_by_classifier_type_assignment_get_and_ref_first()
* Return a reference to the first connection for which a classifier of the given type is associated with
*
* WARNING: YOU MUST NOT USE ecm_db_connection_deref() to release the references taken using this API.
* YOU MUST use ecm_db_connection_by_classifier_type_assignment_deref(), this ensures type assignment list integrity.
*/
struct ecm_db_connection_instance *ecm_db_connection_by_classifier_type_assignment_get_and_ref_first(ecm_classifier_type_t ca_type)
{
struct ecm_db_connection_classifier_type_assignment_list *tal;
struct ecm_db_connection_instance *ci;
DEBUG_ASSERT(ca_type < ECM_CLASSIFIER_TYPES, "Bad type: %d\n", ca_type);
DEBUG_TRACE("Get and ref first connection assigned with classifier type: %d\n", ca_type);
tal = &ecm_db_connection_classifier_type_assignments[ca_type];
spin_lock_bh(&ecm_db_lock);
ci = tal->type_assignments_list;
while (ci) {
struct ecm_db_connection_classifier_type_assignment *ta;
ta = &ci->type_assignment[ca_type];
DEBUG_CHECK_MAGIC(ta, ECM_DB_CLASSIFIER_TYPE_ASSIGNMENT_MAGIC, "%p: magic failed, ci: %p", ta, ci);
if (ta->pending_unassign) {
DEBUG_TRACE("Skip %p, pending unassign for type: %d\n", ci, ca_type);
ci = ta->next;
continue;
}
/*
* Take reference to this connection.
* NOTE: Hold both the connection and the assignment entry so that when we unlock both the connection
* and the type assignment list entry maintains integrity.
*/
_ecm_db_connection_ref(ci);
ta->iteration_count++;
DEBUG_ASSERT(ta->iteration_count > 0, "Bad Iteration count: %d for type: %d, connection: %p\n", ta->iteration_count, ca_type, ci);
spin_unlock_bh(&ecm_db_lock);
return ci;
}
spin_unlock_bh(&ecm_db_lock);
return NULL;
}
EXPORT_SYMBOL(ecm_db_connection_by_classifier_type_assignment_get_and_ref_first);
/*
* ecm_db_connection_by_classifier_type_assignment_get_and_ref_next()
* Return a reference to the next connection for which a classifier of the given type is associated with.
*
* WARNING: YOU MUST NOT USE ecm_db_connection_deref() to release the references taken using this API.
* YOU MUST use ecm_db_connection_by_classifier_type_assignment_deref(), this ensures type assignment list integrity.
*/
struct ecm_db_connection_instance *ecm_db_connection_by_classifier_type_assignment_get_and_ref_next(struct ecm_db_connection_instance *ci, ecm_classifier_type_t ca_type)
{
struct ecm_db_connection_classifier_type_assignment *ta;
struct ecm_db_connection_instance *cin;
DEBUG_ASSERT(ca_type < ECM_CLASSIFIER_TYPES, "Bad type: %d\n", ca_type);
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
DEBUG_TRACE("Get and ref next connection assigned with classifier type: %d and ci: %p\n", ca_type, ci);
spin_lock_bh(&ecm_db_lock);
ta = &ci->type_assignment[ca_type];
cin = ta->next;
while (cin) {
struct ecm_db_connection_classifier_type_assignment *tan;
tan = &cin->type_assignment[ca_type];
DEBUG_CHECK_MAGIC(tan, ECM_DB_CLASSIFIER_TYPE_ASSIGNMENT_MAGIC, "%p: magic failed, ci: %p", tan, cin);
if (tan->pending_unassign) {
DEBUG_TRACE("Skip %p, pending unassign for type: %d\n", cin, ca_type);
cin = tan->next;
continue;
}
/*
* Take reference to this connection.
* NOTE: Hold both the connection and the assignment entry so that when we unlock both the connection
* and the type assignment list entry maintains integrity.
*/
_ecm_db_connection_ref(cin);
tan->iteration_count++;
DEBUG_ASSERT(tan->iteration_count > 0, "Bad Iteration count: %d for type: %d, connection: %p\n", tan->iteration_count, ca_type, cin);
spin_unlock_bh(&ecm_db_lock);
return cin;
}
spin_unlock_bh(&ecm_db_lock);
return NULL;
}
EXPORT_SYMBOL(ecm_db_connection_by_classifier_type_assignment_get_and_ref_next);
/*
* ecm_db_connection_by_classifier_type_assignment_deref()
* Release a reference to a connection while iterating a classifier type assignment list
*/
void ecm_db_connection_by_classifier_type_assignment_deref(struct ecm_db_connection_instance *ci, ecm_classifier_type_t ca_type)
{
struct ecm_db_connection_classifier_type_assignment_list *tal;
struct ecm_db_connection_classifier_type_assignment *ta;
DEBUG_ASSERT(ca_type < ECM_CLASSIFIER_TYPES, "Bad type: %d\n", ca_type);
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
tal = &ecm_db_connection_classifier_type_assignments[ca_type];
/*
* Drop the iteration count
*/
spin_lock_bh(&ecm_db_lock);
ta = &ci->type_assignment[ca_type];
DEBUG_CHECK_MAGIC(ta, ECM_DB_CLASSIFIER_TYPE_ASSIGNMENT_MAGIC, "%p: magic failed, ci: %p", ta, ci);
ta->iteration_count--;
DEBUG_ASSERT(ta->iteration_count >= 0, "Bad Iteration count: %d for type: %d, connection: %p\n", ta->iteration_count, ca_type, ci);
/*
* If there are no more iterations on-going and this is pending unassign then we can remove it from the assignments list
*/
if (ta->pending_unassign && (ta->iteration_count == 0)) {
DEBUG_INFO("%p: Remove type assignment: %d\n", ci, ca_type);
_ecm_db_classifier_type_assignment_remove(ci, ca_type);
}
spin_unlock_bh(&ecm_db_lock);
ecm_db_connection_deref(ci);
}
EXPORT_SYMBOL(ecm_db_connection_by_classifier_type_assignment_deref);
/*
* ecm_db_connection_make_defunct_by_assignment_type()
* Make defunct all connections that are currently assigned to a classifier of the given type
*/
void ecm_db_connection_make_defunct_by_assignment_type(ecm_classifier_type_t ca_type)
{
struct ecm_db_connection_instance *ci;
DEBUG_INFO("Make defunct all assigned to type: %d\n", ca_type);
ci = ecm_db_connection_by_classifier_type_assignment_get_and_ref_first(ca_type);
while (ci) {
struct ecm_db_connection_instance *cin;
DEBUG_TRACE("%p: Make defunct: %d\n", ci, ca_type);
ecm_db_connection_make_defunct(ci);
cin = ecm_db_connection_by_classifier_type_assignment_get_and_ref_next(ci, ca_type);
ecm_db_connection_by_classifier_type_assignment_deref(ci, ca_type);
ci = cin;
}
}
EXPORT_SYMBOL(ecm_db_connection_make_defunct_by_assignment_type);
/*
* ecm_db_connection_regenerate_by_assignment_type()
* Cause regeneration all connections that are currently assigned to a classifier of the given type
*/
void ecm_db_connection_regenerate_by_assignment_type(ecm_classifier_type_t ca_type)
{
struct ecm_db_connection_instance *ci;
DEBUG_INFO("Regenerate all assigned to type: %d\n", ca_type);
ci = ecm_db_connection_by_classifier_type_assignment_get_and_ref_first(ca_type);
while (ci) {
struct ecm_db_connection_instance *cin;
DEBUG_TRACE("%p: Re-generate: %d\n", ci, ca_type);
ecm_db_connection_regenerate(ci);
cin = ecm_db_connection_by_classifier_type_assignment_get_and_ref_next(ci, ca_type);
ecm_db_connection_by_classifier_type_assignment_deref(ci, ca_type);
ci = cin;
}
}
EXPORT_SYMBOL(ecm_db_connection_regenerate_by_assignment_type);
#endif
/*
* ecm_db_connection_from_interfaces_get_and_ref()
* Return the interface heirarchy from which this connection is established.
*
* 'interfaces' MUST be an array as large as ECM_DB_IFACE_HEIRARCHY_MAX.
* Returns either ECM_DB_IFACE_HEIRARCHY_MAX if there are no interfaces / error.
* Returns the index into the interfaces[] of the first interface (so "for (i = <ret val>, i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i)" works)
*
* Each interface is referenced on return, be sure to release them individually or use ecm_db_connection_interfaces_deref() instead.
*/
int32_t ecm_db_connection_from_interfaces_get_and_ref(struct ecm_db_connection_instance *ci, struct ecm_db_iface_instance *interfaces[])
{
int32_t n;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
n = ci->from_interface_first;
for (i = n; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
interfaces[i] = ci->from_interfaces[i];
_ecm_db_iface_ref(interfaces[i]);
}
spin_unlock_bh(&ecm_db_lock);
return n;
}
EXPORT_SYMBOL(ecm_db_connection_from_interfaces_get_and_ref);
/*
* ecm_db_connection_to_interfaces_get_and_ref()
* Return the interface heirarchy to which this connection is established.
*
* 'interfaces' MUST be an array as large as ECM_DB_IFACE_HEIRARCHY_MAX.
* Returns either ECM_DB_IFACE_HEIRARCHY_MAX if there are no interfaces / error.
* Returns the index into the interfaces[] of the first interface (so "for (i = <ret val>, i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i)" works)
*
* Each interface is referenced on return, be sure to release them individually or use ecm_db_connection_interfaces_deref() instead.
*/
int32_t ecm_db_connection_to_interfaces_get_and_ref(struct ecm_db_connection_instance *ci, struct ecm_db_iface_instance *interfaces[])
{
int32_t n;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
n = ci->to_interface_first;
for (i = n; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
interfaces[i] = ci->to_interfaces[i];
_ecm_db_iface_ref(interfaces[i]);
}
spin_unlock_bh(&ecm_db_lock);
return n;
}
EXPORT_SYMBOL(ecm_db_connection_to_interfaces_get_and_ref);
/*
* ecm_db_connection_from_nat_interfaces_get_and_ref()
* Return the interface heirarchy from (nat) which this connection is established.
*
* 'interfaces' MUST be an array as large as ECM_DB_IFACE_HEIRARCHY_MAX.
* Returns either ECM_DB_IFACE_HEIRARCHY_MAX if there are no interfaces / error.
* Returns the index into the interfaces[] of the first interface (so "for (i = <ret val>, i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i)" works)
*
* Each interface is referenced on return, be sure to release them individually or use ecm_db_connection_interfaces_deref() instead.
*/
int32_t ecm_db_connection_from_nat_interfaces_get_and_ref(struct ecm_db_connection_instance *ci, struct ecm_db_iface_instance *interfaces[])
{
int32_t n;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
n = ci->from_nat_interface_first;
for (i = n; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
interfaces[i] = ci->from_nat_interfaces[i];
_ecm_db_iface_ref(interfaces[i]);
}
spin_unlock_bh(&ecm_db_lock);
return n;
}
EXPORT_SYMBOL(ecm_db_connection_from_nat_interfaces_get_and_ref);
/*
* ecm_db_connection_to_nat_interfaces_get_and_ref()
* Return the interface heirarchy to (nat) which this connection is established.
*
* 'interfaces' MUST be an array as large as ECM_DB_IFACE_HEIRARCHY_MAX.
* Returns either ECM_DB_IFACE_HEIRARCHY_MAX if there are no interfaces / error.
* Returns the index into the interfaces[] of the first interface (so "for (i = <ret val>, i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i)" works)
*
* Each interface is referenced on return, be sure to release them individually or use ecm_db_connection_interfaces_deref() instead.
*/
int32_t ecm_db_connection_to_nat_interfaces_get_and_ref(struct ecm_db_connection_instance *ci, struct ecm_db_iface_instance *interfaces[])
{
int32_t n;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
n = ci->to_nat_interface_first;
for (i = n; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
interfaces[i] = ci->to_nat_interfaces[i];
_ecm_db_iface_ref(interfaces[i]);
}
spin_unlock_bh(&ecm_db_lock);
return n;
}
EXPORT_SYMBOL(ecm_db_connection_to_nat_interfaces_get_and_ref);
/*
* ecm_db_connection_interfaces_deref()
* Release all interfaces in the given interfaces heirarchy array.
*
* 'first' is the number returned by one of the ecm_db_connection_xx_interfaces_get_and_ref().
* You should NOT have released any references to any of the interfaces in the array youself, this releases them all.
*/
void ecm_db_connection_interfaces_deref(struct ecm_db_iface_instance *interfaces[], int32_t first)
{
int32_t i;
DEBUG_ASSERT((first >= 0) && (first <= ECM_DB_IFACE_HEIRARCHY_MAX), "Bad first: %d\n", first);
for (i = first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
ecm_db_iface_deref(interfaces[i]);
}
}
EXPORT_SYMBOL(ecm_db_connection_interfaces_deref);
#ifdef ECM_MULTICAST_ENABLE
/*
* ecm_db_multicast_connection_to_interfaces_reset()
* Reset the 'to' interfaces heirarchy with a new set of destination interfaces for
* the multicast connection
*/
int ecm_db_multicast_connection_to_interfaces_reset(struct ecm_db_connection_instance *ci, struct ecm_db_iface_instance *interfaces, int32_t *new_first)
{
struct ecm_db_iface_instance *ii_temp;
struct ecm_db_iface_instance *ii_single;
struct ecm_db_iface_instance **ifaces;
struct ecm_db_iface_instance *ii_db;
struct ecm_db_iface_instance *ii_db_single;
struct ecm_db_iface_instance **ifaces_db;
int32_t *nf_p;
int32_t heirarchy_index;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
/*
* First remove all old interface hierarchies if any hierarchy
* uphold in the ci->to_mcast_interfaces.
*/
ecm_db_multicast_connection_to_interfaces_clear(ci);
ci->to_mcast_interfaces = (struct ecm_db_iface_instance *)kzalloc(ECM_DB_TO_MCAST_INTERFACES_SIZE, GFP_ATOMIC | __GFP_NOWARN);
if (!ci->to_mcast_interfaces) {
DEBUG_WARN("%p: Memory is not available for to_mcast_interfaces\n", ci);
return -1;
}
/*
* Iterate the to interface list and add the new interface hierarchies
*/
spin_lock_bh(&ecm_db_lock);
for (heirarchy_index = 0; heirarchy_index < ECM_DB_MULTICAST_IF_MAX; heirarchy_index++) {
ii_temp = ecm_db_multicast_if_heirarchy_get(interfaces, heirarchy_index);
nf_p = ecm_db_multicast_if_first_get_at_index(new_first, heirarchy_index);
if (*nf_p == ECM_DB_IFACE_HEIRARCHY_MAX) {
continue;
}
for (i = *nf_p; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
/*
* Store valid dest interface list into DB connection
*/
ii_single = ecm_db_multicast_if_instance_get_at_index(ii_temp, i);
ifaces = (struct ecm_db_iface_instance **)ii_single;
ii_db = ecm_db_multicast_if_heirarchy_get(ci->to_mcast_interfaces, heirarchy_index);
ii_db_single = ecm_db_multicast_if_instance_get_at_index(ii_db, i);
ifaces_db = (struct ecm_db_iface_instance **)ii_db_single;
*ifaces_db = *ifaces;
_ecm_db_iface_ref(*ifaces_db);
}
}
/*
* Update the first indices
*/
for (heirarchy_index = 0; heirarchy_index < ECM_DB_MULTICAST_IF_MAX; heirarchy_index++) {
nf_p = ecm_db_multicast_if_first_get_at_index(new_first, heirarchy_index);
ci->to_mcast_interface_first[heirarchy_index] = *nf_p;
}
ci->to_mcast_interfaces_set = true;
spin_unlock_bh(&ecm_db_lock);
return 0;
}
EXPORT_SYMBOL(ecm_db_multicast_connection_to_interfaces_reset);
/*
* ecm_db_multicast_connection_to_interfaces_update()
* Merge the latest valid multicast destination interfaces into DB Connection
* instance. The new list holds the updated list of interfaces for the multicast
* connection, due to JOIN updates.
*/
void ecm_db_multicast_connection_to_interfaces_update(struct ecm_db_connection_instance *ci,
struct ecm_db_iface_instance *interfaces, int32_t *mc_join_first, int32_t *mc_join_valid_idx)
{
struct ecm_db_iface_instance *ii_temp;
struct ecm_db_iface_instance *ii_single;
struct ecm_db_iface_instance **ifaces;
struct ecm_db_iface_instance *ii_db;
struct ecm_db_iface_instance *ii_db_single;
struct ecm_db_iface_instance **ifaces_db;
int32_t *join_first;
int32_t *join_idx;
int heirarchy_index;
int32_t if_index;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
/*
* Iterate the to interface list, adding in the new
*/
spin_lock_bh(&ecm_db_lock);
for (heirarchy_index = 0, if_index = 0; heirarchy_index < ECM_DB_MULTICAST_IF_MAX; heirarchy_index++) {
ii_temp = ecm_db_multicast_if_heirarchy_get(interfaces, if_index);
join_first = ecm_db_multicast_if_first_get_at_index(mc_join_first, if_index);
join_idx = ecm_db_multicast_if_num_get_at_index(mc_join_valid_idx, heirarchy_index);
if (*join_idx == 0) {
/*
* No update for the interface at this index
*/
continue;
}
/*
* This interface has joined the group. Add it to the list.
*/
if (*join_first == ECM_DB_IFACE_HEIRARCHY_MAX) {
if_index++;
continue;
}
ci->to_mcast_interface_first[heirarchy_index] = *join_first;
for (i = *join_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
/*
* Store valid dest interface list into DB connection
*/
ii_single = ecm_db_multicast_if_instance_get_at_index(ii_temp, i);
ifaces = (struct ecm_db_iface_instance **)ii_single;
ii_db = ecm_db_multicast_if_heirarchy_get(ci->to_mcast_interfaces, heirarchy_index);
ii_db_single = ecm_db_multicast_if_instance_get_at_index(ii_db, i);
ifaces_db = (struct ecm_db_iface_instance **)ii_db_single;
*ifaces_db = *ifaces;
_ecm_db_iface_ref(*ifaces_db);
}
if_index++;
}
spin_unlock_bh(&ecm_db_lock);
return;
}
EXPORT_SYMBOL(ecm_db_multicast_connection_to_interfaces_update);
#endif
/*
* ecm_db_connection_from_interfaces_reset()
* Reset the from interfaces heirarchy with a new set of interfaces
*
* NOTE: This will mark the list as set even if you specify no list as a replacement.
* This is deliberate - it's stating that there is no list :-)
*/
void ecm_db_connection_from_interfaces_reset(struct ecm_db_connection_instance *ci, struct ecm_db_iface_instance *interfaces[], int32_t new_first)
{
struct ecm_db_iface_instance *old[ECM_DB_IFACE_HEIRARCHY_MAX];
int32_t old_first;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
/*
* Iterate the from interface list, removing the old and adding in the new
*/
spin_lock_bh(&ecm_db_lock);
for (i = 0; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
/*
* Put any previous interface into the old list
*/
old[i] = ci->from_interfaces[i];
ci->from_interfaces[i] = NULL;
if (i < new_first) {
continue;
}
ci->from_interfaces[i] = interfaces[i];
_ecm_db_iface_ref(ci->from_interfaces[i]);
}
/*
* Get old first and update to new first
*/
old_first = ci->from_interface_first;
ci->from_interface_first = new_first;
ci->from_interface_set = true;
spin_unlock_bh(&ecm_db_lock);
/*
* Release old
*/
ecm_db_connection_interfaces_deref(old, old_first);
}
EXPORT_SYMBOL(ecm_db_connection_from_interfaces_reset);
/*
* ecm_db_connection_to_interfaces_reset()
* Reset the to interfaces heirarchy with a new set of interfaces
*
* NOTE: This will mark the list as set even if you specify no list as a replacement.
* This is deliberate - it's stating that there is no list :-)
*/
void ecm_db_connection_to_interfaces_reset(struct ecm_db_connection_instance *ci, struct ecm_db_iface_instance *interfaces[], int32_t new_first)
{
struct ecm_db_iface_instance *old[ECM_DB_IFACE_HEIRARCHY_MAX];
int32_t old_first;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
/*
* Iterate the to interface list, removing the old and adding in the new
*/
spin_lock_bh(&ecm_db_lock);
for (i = 0; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
/*
* Put any previous interface into the old list
*/
old[i] = ci->to_interfaces[i];
ci->to_interfaces[i] = NULL;
if (i < new_first) {
continue;
}
ci->to_interfaces[i] = interfaces[i];
_ecm_db_iface_ref(ci->to_interfaces[i]);
}
/*
* Get old first and update to new first
*/
old_first = ci->to_interface_first;
ci->to_interface_first = new_first;
ci->to_interface_set = true;
spin_unlock_bh(&ecm_db_lock);
/*
* Release old
*/
ecm_db_connection_interfaces_deref(old, old_first);
}
EXPORT_SYMBOL(ecm_db_connection_to_interfaces_reset);
/*
* ecm_db_connection_from_nat_interfaces_reset()
* Reset the from NAT interfaces heirarchy with a new set of interfaces
*
* NOTE: This will mark the list as set even if you specify no list as a replacement.
* This is deliberate - it's stating that there is no list :-)
*/
void ecm_db_connection_from_nat_interfaces_reset(struct ecm_db_connection_instance *ci, struct ecm_db_iface_instance *interfaces[], int32_t new_first)
{
struct ecm_db_iface_instance *old[ECM_DB_IFACE_HEIRARCHY_MAX];
int32_t old_first;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
/*
* Iterate the from nat interface list, removing the old and adding in the new
*/
spin_lock_bh(&ecm_db_lock);
for (i = 0; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
/*
* Put any previous interface into the old list
*/
old[i] = ci->from_nat_interfaces[i];
ci->from_nat_interfaces[i] = NULL;
if (i < new_first) {
continue;
}
ci->from_nat_interfaces[i] = interfaces[i];
_ecm_db_iface_ref(ci->from_nat_interfaces[i]);
}
/*
* Get old first and update to new first
*/
old_first = ci->from_nat_interface_first;
ci->from_nat_interface_first = new_first;
ci->from_nat_interface_set = true;
spin_unlock_bh(&ecm_db_lock);
/*
* Release old
*/
ecm_db_connection_interfaces_deref(old, old_first);
}
EXPORT_SYMBOL(ecm_db_connection_from_nat_interfaces_reset);
/*
* ecm_db_connection_to_nat_interfaces_reset()
* Reset the to NAT interfaces heirarchy with a new set of interfaces.
*
* NOTE: This will mark the list as set even if you specify no list as a replacement.
* This is deliberate - it's stating that there is no list :-)
*/
void ecm_db_connection_to_nat_interfaces_reset(struct ecm_db_connection_instance *ci, struct ecm_db_iface_instance *interfaces[], int32_t new_first)
{
struct ecm_db_iface_instance *old[ECM_DB_IFACE_HEIRARCHY_MAX];
int32_t old_first;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
/*
* Iterate the to nat interface list, removing the old and adding in the new
*/
spin_lock_bh(&ecm_db_lock);
for (i = 0; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
/*
* Put any previous interface into the old list
*/
old[i] = ci->to_nat_interfaces[i];
ci->to_nat_interfaces[i] = NULL;
if (i < new_first) {
continue;
}
ci->to_nat_interfaces[i] = interfaces[i];
_ecm_db_iface_ref(ci->to_nat_interfaces[i]);
}
/*
* Get old first and update to new first
*/
old_first = ci->to_nat_interface_first;
ci->to_nat_interface_first = new_first;
ci->to_nat_interface_set = true;
spin_unlock_bh(&ecm_db_lock);
/*
* Release old
*/
ecm_db_connection_interfaces_deref(old, old_first);
}
EXPORT_SYMBOL(ecm_db_connection_to_nat_interfaces_reset);
/*
* ecm_db_connection_to_nat_interfaces_get_count()
* Return the number of interfaces in the list
*/
int32_t ecm_db_connection_to_nat_interfaces_get_count(struct ecm_db_connection_instance *ci)
{
int32_t first;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
first = ci->to_nat_interface_first;
spin_unlock_bh(&ecm_db_lock);
return ECM_DB_IFACE_HEIRARCHY_MAX - first;
}
EXPORT_SYMBOL(ecm_db_connection_to_nat_interfaces_get_count);
/*
* ecm_db_connection_from_nat_interfaces_get_count()
* Return the number of interfaces in the list
*/
int32_t ecm_db_connection_from_nat_interfaces_get_count(struct ecm_db_connection_instance *ci)
{
int32_t first;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
first = ci->from_nat_interface_first;
spin_unlock_bh(&ecm_db_lock);
return ECM_DB_IFACE_HEIRARCHY_MAX - first;
}
EXPORT_SYMBOL(ecm_db_connection_from_nat_interfaces_get_count);
/*
* ecm_db_connection_to_interfaces_get_count()
* Return the number of interfaces in the list
*/
int32_t ecm_db_connection_to_interfaces_get_count(struct ecm_db_connection_instance *ci)
{
int32_t first;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
first = ci->to_interface_first;
spin_unlock_bh(&ecm_db_lock);
return ECM_DB_IFACE_HEIRARCHY_MAX - first;
}
EXPORT_SYMBOL(ecm_db_connection_to_interfaces_get_count);
/*
* ecm_db_connection_from_interfaces_get_count()
* Return the number of interfaces in the list
*/
int32_t ecm_db_connection_from_interfaces_get_count(struct ecm_db_connection_instance *ci)
{
int32_t first;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
first = ci->from_interface_first;
spin_unlock_bh(&ecm_db_lock);
return ECM_DB_IFACE_HEIRARCHY_MAX - first;
}
EXPORT_SYMBOL(ecm_db_connection_from_interfaces_get_count);
/*
* ecm_db_connection_to_interfaces_set_check()
* Returns true if the interface list has been set - even if set to an empty list!
*/
bool ecm_db_connection_to_interfaces_set_check(struct ecm_db_connection_instance *ci)
{
bool set;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
set = ci->to_interface_set;
spin_unlock_bh(&ecm_db_lock);
return set;
}
EXPORT_SYMBOL(ecm_db_connection_to_interfaces_set_check);
/*
* ecm_db_connection_from_interfaces_set_check()
* Returns true if the interface list has been set - even if set to an empty list!
*/
bool ecm_db_connection_from_interfaces_set_check(struct ecm_db_connection_instance *ci)
{
bool set;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
set = ci->from_interface_set;
spin_unlock_bh(&ecm_db_lock);
return set;
}
EXPORT_SYMBOL(ecm_db_connection_from_interfaces_set_check);
/*
* ecm_db_connection_to_nat_interfaces_set_check()
* Returns true if the interface list has been set - even if set to an empty list!
*/
bool ecm_db_connection_to_nat_interfaces_set_check(struct ecm_db_connection_instance *ci)
{
bool set;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
set = ci->to_nat_interface_set;
spin_unlock_bh(&ecm_db_lock);
return set;
}
EXPORT_SYMBOL(ecm_db_connection_to_nat_interfaces_set_check);
/*
* ecm_db_connection_from_nat_interfaces_set_check()
* Returns true if the interface list has been set - even if set to an empty list!
*/
bool ecm_db_connection_from_nat_interfaces_set_check(struct ecm_db_connection_instance *ci)
{
bool set;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
set = ci->from_nat_interface_set;
spin_unlock_bh(&ecm_db_lock);
return set;
}
EXPORT_SYMBOL(ecm_db_connection_from_nat_interfaces_set_check);
/*
* ecm_db_connection_from_interfaces_clear()
* Clear down the interfaces list, marking the list as not set
*/
void ecm_db_connection_from_interfaces_clear(struct ecm_db_connection_instance *ci)
{
struct ecm_db_iface_instance *discard[ECM_DB_IFACE_HEIRARCHY_MAX];
int32_t discard_first;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
for (i = ci->from_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
discard[i] = ci->from_interfaces[i];
}
discard_first = ci->from_interface_first;
ci->from_interface_set = false;
ci->from_interface_first = ECM_DB_IFACE_HEIRARCHY_MAX;
spin_unlock_bh(&ecm_db_lock);
/*
* Release previous
*/
ecm_db_connection_interfaces_deref(discard, discard_first);
}
EXPORT_SYMBOL(ecm_db_connection_from_interfaces_clear);
/*
* ecm_db_connection_from_nat_interfaces_clear()
* Clear down the interfaces list, marking the list as not set
*/
void ecm_db_connection_from_nat_interfaces_clear(struct ecm_db_connection_instance *ci)
{
struct ecm_db_iface_instance *discard[ECM_DB_IFACE_HEIRARCHY_MAX];
int32_t discard_first;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
for (i = ci->from_nat_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
discard[i] = ci->from_nat_interfaces[i];
}
discard_first = ci->from_nat_interface_first;
ci->from_nat_interface_set = false;
ci->from_nat_interface_first = ECM_DB_IFACE_HEIRARCHY_MAX;
spin_unlock_bh(&ecm_db_lock);
/*
* Release previous
*/
ecm_db_connection_interfaces_deref(discard, discard_first);
}
EXPORT_SYMBOL(ecm_db_connection_from_nat_interfaces_clear);
/*
* ecm_db_connection_to_interfaces_clear()
* Clear down the interfaces list, marking the list as not set
*/
void ecm_db_connection_to_interfaces_clear(struct ecm_db_connection_instance *ci)
{
struct ecm_db_iface_instance *discard[ECM_DB_IFACE_HEIRARCHY_MAX];
int32_t discard_first;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
for (i = ci->to_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
discard[i] = ci->to_interfaces[i];
}
discard_first = ci->to_interface_first;
ci->to_interface_set = false;
ci->to_interface_first = ECM_DB_IFACE_HEIRARCHY_MAX;
spin_unlock_bh(&ecm_db_lock);
/*
* Release previous
*/
ecm_db_connection_interfaces_deref(discard, discard_first);
}
EXPORT_SYMBOL(ecm_db_connection_to_interfaces_clear);
/*
* ecm_db_connection_to_nat_interfaces_clear()
* Clear down the interfaces list, marking the list as not set
*/
void ecm_db_connection_to_nat_interfaces_clear(struct ecm_db_connection_instance *ci)
{
struct ecm_db_iface_instance *discard[ECM_DB_IFACE_HEIRARCHY_MAX];
int32_t discard_first;
int32_t i;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
for (i = ci->to_nat_interface_first; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) {
discard[i] = ci->to_nat_interfaces[i];
}
discard_first = ci->to_nat_interface_first;
ci->to_nat_interface_set = false;
ci->to_nat_interface_first = ECM_DB_IFACE_HEIRARCHY_MAX;
spin_unlock_bh(&ecm_db_lock);
/*
* Release previous
*/
ecm_db_connection_interfaces_deref(discard, discard_first);
}
EXPORT_SYMBOL(ecm_db_connection_to_nat_interfaces_clear);
/*
* ecm_db_connection_add()
* Add the connection into the database.
*
* NOTE: The parameters are DIRECTIONAL in terms of which mapping established the connection.
* NOTE: Dir confirms if this is an egressing or ingressing connection. This applies to firewalling front ends mostly. If INGRESS then mapping_from is the WAN side. If EGRESS then mapping_to is the WAN side.
*/
void ecm_db_connection_add(struct ecm_db_connection_instance *ci,
struct ecm_front_end_connection_instance *feci,
struct ecm_db_mapping_instance *mapping_from, struct ecm_db_mapping_instance *mapping_to,
struct ecm_db_mapping_instance *mapping_nat_from, struct ecm_db_mapping_instance *mapping_nat_to,
struct ecm_db_node_instance *from_node, struct ecm_db_node_instance *to_node,
struct ecm_db_node_instance *from_nat_node, struct ecm_db_node_instance *to_nat_node,
int ip_version,
int protocol, ecm_db_direction_t dir,
ecm_db_connection_final_callback_t final,
ecm_db_connection_defunct_callback_t defunct,
ecm_db_timer_group_t tg, bool is_routed,
void *arg)
{
ecm_db_connection_hash_t hash_index;
ecm_db_connection_serial_hash_t serial_hash_index;
struct ecm_db_listener_instance *li;
#ifdef ECM_DB_XREF_ENABLE
struct ecm_db_iface_instance *iface_from;
struct ecm_db_iface_instance *iface_to;
struct ecm_db_iface_instance *iface_nat_from;
struct ecm_db_iface_instance *iface_nat_to;
#endif
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
DEBUG_CHECK_MAGIC(mapping_from, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed\n", mapping_from);
DEBUG_CHECK_MAGIC(mapping_to, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed\n", mapping_to);
DEBUG_CHECK_MAGIC(mapping_nat_from, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed\n", mapping_nat_from);
DEBUG_CHECK_MAGIC(mapping_nat_to, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed\n", mapping_nat_to);
DEBUG_CHECK_MAGIC(from_node, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed\n", from_node);
DEBUG_CHECK_MAGIC(to_node, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed\n", to_node);
DEBUG_CHECK_MAGIC(from_nat_node, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed\n", from_nat_node);
DEBUG_CHECK_MAGIC(to_nat_node, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed\n", to_nat_node);
DEBUG_ASSERT((protocol >= 0) && (protocol <= 255), "%p: invalid protocol number %d\n", ci, protocol);
spin_lock_bh(&ecm_db_lock);
DEBUG_ASSERT(!(ci->flags & ECM_DB_CONNECTION_FLAGS_INSERTED), "%p: inserted\n", ci);
spin_unlock_bh(&ecm_db_lock);
/*
* Record owner arg and callbacks
*/
ci->final = final;
ci->defunct = defunct;
ci->arg = arg;
/*
* Take reference to the front end
*/
feci->ref(feci);
ci->feci = feci;
/*
* Ensure default classifier has been assigned this is a must to ensure minimum level of classification
*/
DEBUG_ASSERT(ci->assignments_by_type[ECM_CLASSIFIER_TYPE_DEFAULT], "%p: No default classifier assigned\n", ci);
/*
* Connection takes references to the mappings
*/
ecm_db_mapping_ref(mapping_from);
ecm_db_mapping_ref(mapping_to);
ci->mapping_from = mapping_from;
ci->mapping_to = mapping_to;
ecm_db_mapping_ref(mapping_nat_from);
ecm_db_mapping_ref(mapping_nat_to);
ci->mapping_nat_from = mapping_nat_from;
ci->mapping_nat_to = mapping_nat_to;
/*
* Take references to the nodes
*/
ci->from_node = from_node;
ecm_db_node_ref(from_node);
ci->to_node = to_node;
ecm_db_node_ref(to_node);
ci->from_nat_node = from_nat_node;
ecm_db_node_ref(from_nat_node);
ci->to_nat_node = to_nat_node;
ecm_db_node_ref(to_nat_node);
/*
* Set the protocol and routed flag
*/
ci->ip_version = ip_version;
ci->protocol = protocol;
ci->is_routed = is_routed;
/*
* Set direction of connection
*/
ci->direction = dir;
/*
* Identify which hash chain this connection will go into
*/
hash_index = ecm_db_connection_generate_hash_index(mapping_from->host->address, mapping_from->port, mapping_to->host->address, mapping_to->port, protocol);
ci->hash_index = hash_index;
/*
* Identify which serial hash chain this connection will go into
*/
serial_hash_index = ecm_db_connection_generate_serial_hash_index(ci->serial);
ci->serial_hash_index = serial_hash_index;
/*
* Now we need to lock
*/
spin_lock_bh(&ecm_db_lock);
/*
* Increment protocol counter stats
*/
ecm_db_connection_count_by_protocol[protocol]++;
DEBUG_ASSERT(ecm_db_connection_count_by_protocol[protocol] > 0, "%p: Invalid protocol count %d\n", ci, ecm_db_connection_count_by_protocol[protocol]);
/*
* Set time
*/
ci->time_added = ecm_db_time;
/*
* Add connection into the global list
*/
ci->prev = NULL;
ci->next = ecm_db_connections;
if (ecm_db_connections) {
ecm_db_connections->prev = ci;
}
ecm_db_connections = ci;
/*
* Add this connection into the connections hash table
*/
ci->flags |= ECM_DB_CONNECTION_FLAGS_INSERTED;
/*
* Insert connection into the connections hash table
*/
ci->hash_next = ecm_db_connection_table[hash_index];
if (ecm_db_connection_table[hash_index]) {
ecm_db_connection_table[hash_index]->hash_prev = ci;
}
ecm_db_connection_table[hash_index] = ci;
ecm_db_connection_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_connection_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ci, ecm_db_connection_table_lengths[hash_index]);
/*
* Insert connection into the connections serial hash table
*/
ci->serial_hash_next = ecm_db_connection_serial_table[serial_hash_index];
if (ecm_db_connection_serial_table[serial_hash_index]) {
ecm_db_connection_serial_table[serial_hash_index]->serial_hash_prev = ci;
}
ecm_db_connection_serial_table[serial_hash_index] = ci;
ecm_db_connection_serial_table_lengths[serial_hash_index]++;
DEBUG_ASSERT(ecm_db_connection_serial_table_lengths[serial_hash_index] > 0, "%p: invalid table len %d\n", ci, ecm_db_connection_serial_table_lengths[serial_hash_index]);
#ifdef ECM_DB_XREF_ENABLE
/*
* Add this connection into the FROM node
*/
ci->node_from_prev = NULL;
ci->node_from_next = from_node->from_connections;
if (from_node->from_connections) {
from_node->from_connections->node_from_prev = ci;
}
from_node->from_connections = ci;
from_node->from_connections_count++;
DEBUG_ASSERT(from_node->from_connections_count > 0, "%p: invalid count\n", ci);
/*
* Add this connection into the TO node
*/
ci->node_to_prev = NULL;
ci->node_to_next = to_node->to_connections;
if (to_node->to_connections) {
to_node->to_connections->node_to_prev = ci;
}
to_node->to_connections = ci;
to_node->to_connections_count++;
DEBUG_ASSERT(to_node->to_connections_count > 0, "%p: invalid count\n", ci);
/*
* Add this connection into the FROM NAT node
*/
ci->node_from_nat_prev = NULL;
ci->node_from_nat_next = from_nat_node->from_nat_connections;
if (from_nat_node->from_nat_connections) {
from_nat_node->from_nat_connections->node_from_nat_prev = ci;
}
from_nat_node->from_nat_connections = ci;
from_nat_node->from_nat_connections_count++;
DEBUG_ASSERT(from_nat_node->from_nat_connections_count > 0, "%p: invalid count\n", ci);
/*
* Add this connection into the TO NAT node
*/
ci->node_to_nat_prev = NULL;
ci->node_to_nat_next = to_nat_node->to_nat_connections;
if (to_nat_node->to_nat_connections) {
to_nat_node->to_nat_connections->node_to_nat_prev = ci;
}
to_nat_node->to_nat_connections = ci;
to_nat_node->to_nat_connections_count++;
DEBUG_ASSERT(to_nat_node->to_nat_connections_count > 0, "%p: invalid count\n", ci);
/*
* Add this connection into the FROM mapping
*/
ci->from_prev = NULL;
ci->from_next = mapping_from->from_connections;
if (mapping_from->from_connections) {
mapping_from->from_connections->from_prev = ci;
}
mapping_from->from_connections = ci;
/*
* Add this connection into the TO mapping
*/
ci->to_prev = NULL;
ci->to_next = mapping_to->to_connections;
if (mapping_to->to_connections) {
mapping_to->to_connections->to_prev = ci;
}
mapping_to->to_connections = ci;
/*
* Add this connection into the FROM NAT mapping
*/
ci->from_nat_prev = NULL;
ci->from_nat_next = mapping_nat_from->from_nat_connections;
if (mapping_nat_from->from_nat_connections) {
mapping_nat_from->from_nat_connections->from_nat_prev = ci;
}
mapping_nat_from->from_nat_connections = ci;
/*
* Add this connection into the TO NAT mapping
*/
ci->to_nat_prev = NULL;
ci->to_nat_next = mapping_nat_to->to_nat_connections;
if (mapping_nat_to->to_nat_connections) {
mapping_nat_to->to_nat_connections->to_nat_prev = ci;
}
mapping_nat_to->to_nat_connections = ci;
/*
* Add this connection into the FROM iface list of connections
* NOTE: There is no need to ref the iface because it will exist for as long as this connection exists
* due to the heirarchy of dependencies being kept by the database.
*/
iface_from = from_node->iface;
ci->iface_from_prev = NULL;
ci->iface_from_next = iface_from->from_connections;
if (iface_from->from_connections) {
iface_from->from_connections->iface_from_prev = ci;
}
iface_from->from_connections = ci;
/*
* Add this connection into the TO iface list of connections
* NOTE: There is no need to ref the iface because it will exist for as long as this connection exists
* due to the heirarchy of dependencies being kept by the database.
*/
iface_to = to_node->iface;
ci->iface_to_prev = NULL;
ci->iface_to_next = iface_to->to_connections;
if (iface_to->to_connections) {
iface_to->to_connections->iface_to_prev = ci;
}
iface_to->to_connections = ci;
/*
* Add this connection into the FROM NAT iface list of connections
* NOTE: There is no need to ref the iface because it will exist for as long as this connection exists
* due to the heirarchy of dependencies being kept by the database.
*/
iface_nat_from = from_nat_node->iface;
ci->iface_from_nat_prev = NULL;
ci->iface_from_nat_next = iface_nat_from->from_nat_connections;
if (iface_nat_from->from_nat_connections) {
iface_nat_from->from_nat_connections->iface_from_nat_prev = ci;
}
iface_nat_from->from_nat_connections = ci;
/*
* Add this connection into the TO NAT iface list of connections
* NOTE: There is no need to ref the iface because it will exist for as long as this connection exists
* due to the heirarchy of dependencies being kept by the database.
*/
iface_nat_to = to_nat_node->iface;
ci->iface_to_nat_prev = NULL;
ci->iface_to_nat_next = iface_nat_to->to_nat_connections;
if (iface_nat_to->to_nat_connections) {
iface_nat_to->to_nat_connections->iface_to_nat_prev = ci;
}
iface_nat_to->to_nat_connections = ci;
#endif
/*
* NOTE: The interface heirarchy lists are deliberately left empty - these are completed
* by the front end if it is appropriate to do so.
*/
/*
* Update the counters in the mapping
*/
if (protocol == IPPROTO_UDP) {
mapping_from->udp_from++;
mapping_to->udp_to++;
mapping_nat_from->udp_nat_from++;
mapping_nat_to->udp_nat_to++;
} else if (protocol == IPPROTO_TCP) {
mapping_from->tcp_from++;
mapping_to->tcp_to++;
mapping_nat_from->tcp_nat_from++;
mapping_nat_to->tcp_nat_to++;
}
mapping_from->from++;
mapping_to->to++;
mapping_nat_from->nat_from++;
mapping_nat_to->nat_to++;
/*
* Set the generation number to match global
*/
ci->generation = ecm_db_connection_generation;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw connection added event\n", ci);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->connection_added) {
li->connection_added(li->arg, ci);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
/*
* Set timer group. 'ref' the connection to ensure it persists for the timer.
*/
ecm_db_connection_ref(ci);
ecm_db_timer_group_entry_set(&ci->defunct_timer, tg);
}
EXPORT_SYMBOL(ecm_db_connection_add);
/*
* ecm_db_mapping_add()
* Add a mapping instance into the database
*
* NOTE: The mapping will take a reference to the host instance.
*/
void ecm_db_mapping_add(struct ecm_db_mapping_instance *mi, struct ecm_db_host_instance *hi, int port,
ecm_db_mapping_final_callback_t final, void *arg)
{
ecm_db_mapping_hash_t hash_index;
struct ecm_db_listener_instance *li;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC, "%p: magic failed\n", mi);
DEBUG_CHECK_MAGIC(hi, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed\n", hi);
DEBUG_ASSERT(!(mi->flags & ECM_DB_MAPPING_FLAGS_INSERTED), "%p: inserted\n", mi);
DEBUG_ASSERT((hi->flags & ECM_DB_HOST_FLAGS_INSERTED), "%p: not inserted\n", hi);
DEBUG_ASSERT(!mi->tcp_from && !mi->tcp_to && !mi->udp_from && !mi->udp_to, "%p: protocol count errors\n", mi);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT(mi->from_connections == NULL, "%p: connections not null\n", mi);
DEBUG_ASSERT(mi->to_connections == NULL, "%p: connections not null\n", mi);
DEBUG_ASSERT(!mi->from && !mi->to && !mi->nat_from && !mi->nat_to, "%p: connection count errors\n", mi);
#endif
spin_unlock_bh(&ecm_db_lock);
mi->arg = arg;
mi->final = final;
/*
* Compute hash table position for insertion
*/
hash_index = ecm_db_mapping_generate_hash_index(hi->address, port);
mi->hash_index = hash_index;
/*
* Record port
*/
mi->port = port;
/*
* Mapping takes a ref to the host
*/
ecm_db_host_ref(hi);
mi->host = hi;
/*
* Set time
*/
spin_lock_bh(&ecm_db_lock);
mi->time_added = ecm_db_time;
/*
* Record the mapping is inserted
*/
mi->flags |= ECM_DB_MAPPING_FLAGS_INSERTED;
/*
* Add into the global list
*/
mi->prev = NULL;
mi->next = ecm_db_mappings;
if (ecm_db_mappings) {
ecm_db_mappings->prev = mi;
}
ecm_db_mappings = mi;
/*
* Insert mapping into the mappings hash table
*/
mi->hash_next = ecm_db_mapping_table[hash_index];
if (ecm_db_mapping_table[hash_index]) {
ecm_db_mapping_table[hash_index]->hash_prev = mi;
}
ecm_db_mapping_table[hash_index] = mi;
ecm_db_mapping_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_mapping_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", hi, ecm_db_mapping_table_lengths[hash_index]);
#ifdef ECM_DB_XREF_ENABLE
/*
* Insert mapping into the host mapping list
*/
mi->mapping_prev = NULL;
mi->mapping_next = hi->mappings;
if (hi->mappings) {
hi->mappings->mapping_prev = mi;
}
hi->mappings = mi;
hi->mapping_count++;
#endif
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw mapping added event\n", mi);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->mapping_added) {
li->mapping_added(li->arg, mi);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_mapping_add);
/*
* ecm_db_host_add()
* Add a host instance into the database
*/
void ecm_db_host_add(struct ecm_db_host_instance *hi, ip_addr_t address, bool on_link, ecm_db_host_final_callback_t final, void *arg)
{
ecm_db_host_hash_t hash_index;
struct ecm_db_listener_instance *li;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(hi, ECM_DB_HOST_INSTANCE_MAGIC, "%p: magic failed\n", hi);
DEBUG_ASSERT(!(hi->flags & ECM_DB_HOST_FLAGS_INSERTED), "%p: inserted\n", hi);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((hi->mappings == NULL) && (hi->mapping_count == 0), "%p: mappings not null\n", hi);
#endif
spin_unlock_bh(&ecm_db_lock);
hi->arg = arg;
hi->final = final;
ECM_IP_ADDR_COPY(hi->address, address);
hi->on_link = on_link;
/*
* Compute hash index into which host will be added
*/
hash_index = ecm_db_host_generate_hash_index(address);
hi->hash_index = hash_index;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
hi->flags |= ECM_DB_HOST_FLAGS_INSERTED;
hi->prev = NULL;
hi->next = ecm_db_hosts;
if (ecm_db_hosts) {
ecm_db_hosts->prev = hi;
}
ecm_db_hosts = hi;
/*
* Add host into the hash table
*/
hi->hash_next = ecm_db_host_table[hash_index];
if (ecm_db_host_table[hash_index]) {
ecm_db_host_table[hash_index]->hash_prev = hi;
}
ecm_db_host_table[hash_index] = hi;
ecm_db_host_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_host_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", hi, ecm_db_host_table_lengths[hash_index]);
/*
* Set time of add
*/
hi->time_added = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw host added event\n", hi);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->host_added) {
li->host_added(li->arg, hi);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_host_add);
/*
* ecm_db_node_add()
* Add a node instance into the database
*/
void ecm_db_node_add(struct ecm_db_node_instance *ni, struct ecm_db_iface_instance *ii, uint8_t *address,
ecm_db_node_final_callback_t final, void *arg)
{
ecm_db_node_hash_t hash_index;
struct ecm_db_listener_instance *li;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(ni, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed\n", ni);
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
DEBUG_ASSERT(address, "%p: address null\n", ni);
DEBUG_ASSERT((ni->iface == NULL), "%p: iface not null\n", ni);
DEBUG_ASSERT(!(ni->flags & ECM_DB_NODE_FLAGS_INSERTED), "%p: inserted\n", ni);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ni->from_connections == NULL) && (ni->from_connections_count == 0), "%p: from_connections not null\n", ni);
DEBUG_ASSERT((ni->to_connections == NULL) && (ni->to_connections_count == 0), "%p: to_connections not null\n", ni);
DEBUG_ASSERT((ni->from_nat_connections == NULL) && (ni->from_nat_connections_count == 0), "%p: from_nat_connections not null\n", ni);
DEBUG_ASSERT((ni->to_nat_connections == NULL) && (ni->to_nat_connections_count == 0), "%p: to_nat_connections not null\n", ni);
#endif
spin_unlock_bh(&ecm_db_lock);
memcpy(ni->address, address, ETH_ALEN);
ni->arg = arg;
ni->final = final;
/*
* Compute hash chain for insertion
*/
hash_index = ecm_db_node_generate_hash_index(address);
ni->hash_index = hash_index;
/*
* Node takes a ref to the iface
*/
ecm_db_iface_ref(ii);
ni->iface = ii;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
ni->flags |= ECM_DB_NODE_FLAGS_INSERTED;
ni->prev = NULL;
ni->next = ecm_db_nodes;
if (ecm_db_nodes) {
ecm_db_nodes->prev = ni;
}
ecm_db_nodes = ni;
/*
* Insert into the hash chain
*/
ni->hash_next = ecm_db_node_table[hash_index];
if (ecm_db_node_table[hash_index]) {
ecm_db_node_table[hash_index]->hash_prev = ni;
}
ecm_db_node_table[hash_index] = ni;
ecm_db_node_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_node_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ni, ecm_db_node_table_lengths[hash_index]);
/*
* Set time of add
*/
ni->time_added = ecm_db_time;
#ifdef ECM_DB_XREF_ENABLE
/*
* Insert node into the iface nodes list
*/
ni->node_prev = NULL;
ni->node_next = ii->nodes;
if (ii->nodes) {
ii->nodes->node_prev = ni;
}
ii->nodes = ni;
ii->node_count++;
#endif
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw node added event\n", ni);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->node_added) {
li->node_added(li->arg, ni);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_node_add);
/*
* ecm_db_adv_stats_state_write()
* Write out advanced stats state
*/
static int ecm_db_adv_stats_state_write(struct ecm_state_file_instance *sfi,uint64_t from_data_total, uint64_t to_data_total,
uint64_t from_packet_total, uint64_t to_packet_total, uint64_t from_data_total_dropped,
uint64_t to_data_total_dropped, uint64_t from_packet_total_dropped, uint64_t to_packet_total_dropped)
{
int result;
if ((result = ecm_state_prefix_add(sfi, "adv_stats"))) {
return result;
}
if ((result = ecm_state_write(sfi, "from_data_total", "%llu", from_data_total))) {
return result;
}
if ((result = ecm_state_write(sfi, "to_data_total", "%llu", to_data_total))) {
return result;
}
if ((result = ecm_state_write(sfi, "from_packet_total", "%llu", from_packet_total))) {
return result;
}
if ((result = ecm_state_write(sfi, "to_packet_total", "%llu", to_packet_total))) {
return result;
}
if ((result = ecm_state_write(sfi, "from_data_total_dropped", "%llu", from_data_total_dropped))) {
return result;
}
if ((result = ecm_state_write(sfi, "to_data_total_dropped", "%llu", to_data_total_dropped))) {
return result;
}
if ((result = ecm_state_write(sfi, "from_packet_total_dropped", "%llu", from_packet_total_dropped))) {
return result;
}
if ((result = ecm_state_write(sfi, "to_packet_total_dropped", "%llu", to_packet_total_dropped))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
#ifdef ECM_STATE_OUTPUT_ENABLE
/*
* ecm_db_iface_state_get_base()
* Get the basic state for an interface object
*/
static int ecm_db_iface_state_get_base(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi)
{
int result;
#ifdef ECM_DB_XREF_ENABLE
int node_count;
#endif
uint32_t time_added;
int32_t interface_identifier;
int32_t ae_interface_identifier;
char name[IFNAMSIZ];
int32_t mtu;
ecm_db_iface_type_t type;
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
uint64_t from_data_total;
uint64_t to_data_total;
uint64_t from_packet_total;
uint64_t to_packet_total;
uint64_t from_data_total_dropped;
uint64_t to_data_total_dropped;
uint64_t from_packet_total_dropped;
uint64_t to_packet_total_dropped;
#endif
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
DEBUG_TRACE("%p: Open iface msg\n", ii);
if ((result = ecm_state_prefix_add(sfi, "iface"))) {
return result;
}
#ifdef ECM_DB_XREF_ENABLE
node_count = ecm_db_iface_node_count_get(ii);
#endif
time_added = ii->time_added;
type = ii->type;
interface_identifier = ii->interface_identifier;
ae_interface_identifier = ii->ae_interface_identifier;
spin_lock_bh(&ecm_db_lock);
strcpy(name, ii->name);
mtu = ii->mtu;
spin_unlock_bh(&ecm_db_lock);
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
ecm_db_iface_data_stats_get(ii, &from_data_total, &to_data_total,
&from_packet_total, &to_packet_total,
&from_data_total_dropped, &to_data_total_dropped,
&from_packet_total_dropped, &to_packet_total_dropped);
if ((result = ecm_db_adv_stats_state_write(sfi, from_data_total, to_data_total,
from_packet_total, to_packet_total, from_data_total_dropped,
to_data_total_dropped, from_packet_total_dropped,
to_packet_total_dropped))) {
return result;
}
#endif
if ((result = ecm_state_write(sfi, "type", "%d", type))) {
return result;
}
if ((result = ecm_state_write(sfi, "name", "%s", name))) {
return result;
}
if ((result = ecm_state_write(sfi, "time_added", "%u", time_added))) {
return result;
}
if ((result = ecm_state_write(sfi, "mtu", "%d", mtu))) {
return result;
}
if ((result = ecm_state_write(sfi, "interface_identifier", "%d", interface_identifier))) {
return result;
}
if ((result = ecm_state_write(sfi, "ae_interface_identifier", "%d", ae_interface_identifier))) {
return result;
}
#ifdef ECM_DB_XREF_ENABLE
if ((result = ecm_state_write(sfi, "nodes", "%d", node_count))) {
return result;
}
#endif
return ecm_state_prefix_remove(sfi);
}
/*
* ecm_db_iface_ethernet_state_get()
* Return interface type specific state
*/
static int ecm_db_iface_ethernet_state_get(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi)
{
int result;
uint8_t address[ETH_ALEN];
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
spin_lock_bh(&ecm_db_lock);
memcpy(address, ii->type_info.ethernet.address, ETH_ALEN);
spin_unlock_bh(&ecm_db_lock);
if ((result = ecm_state_prefix_add(sfi, "ethernet"))) {
return result;
}
if ((result = ecm_db_iface_state_get_base(ii, sfi))) {
return result;
}
if ((result = ecm_state_write(sfi, "address", "%pM", address))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
#ifdef ECM_INTERFACE_BOND_ENABLE
/*
* ecm_db_iface_lag_state_get()
* Return interface type specific state
*/
static int ecm_db_iface_lag_state_get(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi)
{
int result;
uint8_t address[ETH_ALEN];
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
spin_lock_bh(&ecm_db_lock);
memcpy(address, ii->type_info.lag.address, ETH_ALEN);
spin_unlock_bh(&ecm_db_lock);
if ((result = ecm_state_prefix_add(sfi, "lag"))) {
return result;
}
if ((result = ecm_db_iface_state_get_base(ii, sfi))) {
return result;
}
if ((result = ecm_state_write(sfi, "address", "%pM", address))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
#endif
/*
* ecm_db_iface_bridge_state_get()
* Return interface type specific state
*/
static int ecm_db_iface_bridge_state_get(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi)
{
int result;
uint8_t address[ETH_ALEN];
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
spin_lock_bh(&ecm_db_lock);
memcpy(address, ii->type_info.bridge.address, ETH_ALEN);
spin_unlock_bh(&ecm_db_lock);
if ((result = ecm_state_prefix_add(sfi, "bridge"))) {
return result;
}
if ((result = ecm_db_iface_state_get_base(ii, sfi))) {
return result;
}
if ((result = ecm_state_write(sfi, "address", "%pM", address))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
#ifdef ECM_INTERFACE_VLAN_ENABLE
/*
* ecm_db_iface_vlan_state_get()
* Return interface type specific state
*/
static int ecm_db_iface_vlan_state_get(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi)
{
int result;
uint8_t address[ETH_ALEN];
uint16_t vlan_tag;
uint16_t vlan_tpid;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
spin_lock_bh(&ecm_db_lock);
memcpy(address, ii->type_info.vlan.address, ETH_ALEN);
vlan_tag = ii->type_info.vlan.vlan_tag;
vlan_tpid = ii->type_info.vlan.vlan_tpid;
spin_unlock_bh(&ecm_db_lock);
if ((result = ecm_state_prefix_add(sfi, "vlan"))) {
return result;
}
if ((result = ecm_db_iface_state_get_base(ii, sfi))) {
return result;
}
if ((result = ecm_state_write(sfi, "address", "%pM", address))) {
return result;
}
if ((result = ecm_state_write(sfi, "tag", "%x", vlan_tag))) {
return result;
}
if ((result = ecm_state_write(sfi, "tpid", "%x", vlan_tpid))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
#endif
#ifdef ECM_INTERFACE_PPPOE_ENABLE
/*
* ecm_db_iface_pppoe_state_get()
* Return interface type specific state
*/
static int ecm_db_iface_pppoe_state_get(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi)
{
int result;
uint16_t pppoe_session_id;
uint8_t remote_mac[ETH_ALEN];
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
spin_lock_bh(&ecm_db_lock);
pppoe_session_id = ii->type_info.pppoe.pppoe_session_id;
memcpy(remote_mac, ii->type_info.pppoe.remote_mac, ETH_ALEN);
spin_unlock_bh(&ecm_db_lock);
if ((result = ecm_state_prefix_add(sfi, "pppoe"))) {
return result;
}
if ((result = ecm_db_iface_state_get_base(ii, sfi))) {
return result;
}
if ((result = ecm_state_write(sfi, "remote_max", "%pM", remote_mac))) {
return result;
}
if ((result = ecm_state_write(sfi, "session_id", "%u", pppoe_session_id))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
#endif
#ifdef ECM_INTERFACE_L2TPV2_ENABLE
/*
* ecm_db_iface_pppol2tpv2_state_get()
* Return interface type specific state
*/
static int ecm_db_iface_pppol2tpv2_state_get(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi)
{
int result;
struct ecm_db_interface_info_pppol2tpv2 type_info;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
spin_lock_bh(&ecm_db_lock);
memcpy(&type_info, &ii->type_info, sizeof(struct ecm_db_interface_info_pppol2tpv2));
spin_unlock_bh(&ecm_db_lock);
if ((result = ecm_state_prefix_add(sfi, "pppol2tpv2"))) {
return result;
}
if ((result = ecm_db_iface_state_get_base(ii, sfi))) {
return result;
}
if ((result = ecm_state_write(sfi, "local_tunnel_id", "%u", type_info.l2tp.tunnel.tunnel_id))) {
return result;
}
if ((result = ecm_state_write(sfi, "local_session_id", "%u", type_info.l2tp.session.session_id))) {
return result;
}
if ((result = ecm_state_write(sfi, "peer_tunnnel_id", "%u", type_info.l2tp.tunnel.peer_tunnel_id))) {
return result;
}
if ((result = ecm_state_write(sfi, "peer_session_id", "%u", type_info.l2tp.session.peer_session_id))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
#endif
/*
* ecm_db_iface_unknown_state_get()
* Return interface type specific state
*/
static int ecm_db_iface_unknown_state_get(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi)
{
int result;
uint32_t os_specific_ident;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
spin_lock_bh(&ecm_db_lock);
os_specific_ident = ii->type_info.unknown.os_specific_ident;
spin_unlock_bh(&ecm_db_lock);
if ((result = ecm_state_prefix_add(sfi, "pppoe"))) {
return result;
}
if ((result = ecm_db_iface_state_get_base(ii, sfi))) {
return result;
}
if ((result = ecm_state_write(sfi, "os_specific_ident", "%u", os_specific_ident))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
/*
* ecm_db_iface_loopback_state_get()
* Return interface type specific state
*/
static int ecm_db_iface_loopback_state_get(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi)
{
int result;
uint32_t os_specific_ident;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
spin_lock_bh(&ecm_db_lock);
os_specific_ident = ii->type_info.loopback.os_specific_ident;
spin_unlock_bh(&ecm_db_lock);
if ((result = ecm_state_prefix_add(sfi, "loopback"))) {
return result;
}
if ((result = ecm_db_iface_state_get_base(ii, sfi))) {
return result;
}
if ((result = ecm_state_write(sfi, "os_specific_ident", "%u", os_specific_ident))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
#ifdef ECM_INTERFACE_IPSEC_ENABLE
/*
* ecm_db_iface_ipsec_tunnel_state_get()
* Return interface type specific state
*
* GGG TODO Output state on ipsec tunnel specific data
*/
static int ecm_db_iface_ipsec_tunnel_state_get(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi)
{
int result;
uint32_t os_specific_ident;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
spin_lock_bh(&ecm_db_lock);
os_specific_ident = ii->type_info.ipsec_tunnel.os_specific_ident;
spin_unlock_bh(&ecm_db_lock);
if ((result = ecm_state_prefix_add(sfi, "ipsec"))) {
return result;
}
if ((result = ecm_db_iface_state_get_base(ii, sfi))) {
return result;
}
if ((result = ecm_state_write(sfi, "os_specific_ident", "%u", os_specific_ident))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
#endif
#ifdef ECM_INTERFACE_TUNIPIP6_ENABLE
#ifdef ECM_IPV6_ENABLE
/*
* ecm_db_iface_tunipip6_state_get()
* Return interface type specific state
*/
static int ecm_db_iface_tunipip6_state_get(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi)
{
int result;
uint32_t os_specific_ident;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
spin_lock_bh(&ecm_db_lock);
os_specific_ident = ii->type_info.ipsec_tunnel.os_specific_ident;
spin_unlock_bh(&ecm_db_lock);
if ((result = ecm_state_prefix_add(sfi, "tunipip6"))) {
return result;
}
if ((result = ecm_db_iface_state_get_base(ii, sfi))) {
return result;
}
if ((result = ecm_state_write(sfi, "os_specific_ident", "%u", os_specific_ident))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
#endif
#endif
#ifdef ECM_INTERFACE_SIT_ENABLE
/*
* ecm_db_iface_sit_state_get()
* Return interface type specific state
*/
static int ecm_db_iface_sit_state_get(struct ecm_db_iface_instance *ii, struct ecm_state_file_instance *sfi)
{
int result;
uint32_t os_specific_ident;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
spin_lock_bh(&ecm_db_lock);
os_specific_ident = ii->type_info.ipsec_tunnel.os_specific_ident;
spin_unlock_bh(&ecm_db_lock);
if ((result = ecm_state_prefix_add(sfi, "sit"))) {
return result;
}
if ((result = ecm_db_iface_state_get_base(ii, sfi))) {
return result;
}
if ((result = ecm_state_write(sfi, "os_specific_ident", "%u", os_specific_ident))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
#endif
/*
* ecm_db_iface_state_get()
* Obtain state for the interface.
*
* State specific to the interface type will be returned.
*/
int ecm_db_iface_state_get(struct ecm_state_file_instance *sfi, struct ecm_db_iface_instance *ii)
{
int result;
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
if ((result = ecm_state_prefix_add(sfi, "iface"))) {
return result;
}
if ((result = ii->state_get(ii, sfi))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
EXPORT_SYMBOL(ecm_db_iface_state_get);
/*
* ecm_db_connection_heirarchy_state_get()
* Output state for an interface heirarchy list.
*/
static int ecm_db_connection_heirarchy_state_get(struct ecm_state_file_instance *sfi, struct ecm_db_iface_instance *interfaces[], int32_t first_interface)
{
int result;
int count;
int i;
int j;
count = ECM_DB_IFACE_HEIRARCHY_MAX - first_interface;
if ((result = ecm_state_write(sfi, "interface_count", "%d", count))) {
return result;
}
/*
* Iterate the interface heirarchy list and output the information
*/
for (i = first_interface, j = 0; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i, ++j) {
struct ecm_db_iface_instance *ii = interfaces[i];
DEBUG_TRACE("Output interface @ %d: %p\n", i, ii);
if ((result = ecm_state_prefix_index_add(sfi, j))) {
return result;
}
result = ii->state_get(ii, sfi);
if (result) {
return result;
}
if ((result = ecm_state_prefix_remove(sfi))) {
return result;
}
}
return 0;
}
#ifdef ECM_MULTICAST_ENABLE
/*
* ecm_db_multicast_to_interfaces_xml_state_get()
* Obtain XML state for the multicast destination interfaces list
*/
static int ecm_db_multicast_to_interfaces_xml_state_get(struct ecm_db_connection_instance *ci, struct ecm_state_file_instance *sfi)
{
struct ecm_db_iface_instance *mc_ifaces;
struct ecm_db_iface_instance *mc_ifaces_single[ECM_DB_IFACE_HEIRARCHY_MAX];
struct ecm_db_iface_instance *ii_temp;
int32_t *mc_ifaces_first;
int32_t *ifaces_first;
int32_t heirarchy_index;
int ret;
ret = ecm_db_multicast_connection_to_interfaces_get_and_ref_all(ci, &mc_ifaces, &mc_ifaces_first);
if (ret == 0) {
return ret;
}
for (heirarchy_index = 0; heirarchy_index < ECM_DB_MULTICAST_IF_MAX; heirarchy_index++) {
ii_temp = ecm_db_multicast_if_heirarchy_get(mc_ifaces, heirarchy_index);
ecm_db_multicast_copy_if_heirarchy(mc_ifaces_single, ii_temp);
ifaces_first = ecm_db_multicast_if_first_get_at_index(mc_ifaces_first, heirarchy_index);
if (ci->to_mcast_interface_first[heirarchy_index] < ECM_DB_IFACE_HEIRARCHY_MAX) {
ret = ecm_db_connection_heirarchy_state_get(sfi, mc_ifaces_single, *ifaces_first);
if (ret) {
ecm_db_multicast_connection_to_interfaces_deref_all(mc_ifaces, mc_ifaces_first);
return ret;
}
}
}
ecm_db_multicast_connection_to_interfaces_deref_all(mc_ifaces, mc_ifaces_first);
return ret;
}
#endif
/*
* ecm_db_connection_state_get()
* Prepare a connection message
*/
int ecm_db_connection_state_get(struct ecm_state_file_instance *sfi, struct ecm_db_connection_instance *ci)
{
int result;
long int expires_in;
int sport;
int sport_nat;
char snode_address[25];
char snode_address_nat[25];
char sip_address[50];
char sip_address_nat[50];
char dnode_address[25];
char dnode_address_nat[25];
int dport;
int dport_nat;
char dip_address[50];
char dip_address_nat[50];
ecm_db_direction_t direction;
int ip_version;
int protocol;
bool is_routed;
uint32_t regen_success;
uint32_t regen_fail;
uint16_t regen_required;
uint16_t regen_occurances;
bool regen_in_progress;
uint16_t generation;
uint16_t global_generation;
uint32_t time_added;
uint32_t serial;
uint64_t from_data_total;
uint64_t to_data_total;
uint64_t from_packet_total;
uint64_t to_packet_total;
uint64_t from_data_total_dropped;
uint64_t to_data_total_dropped;
uint64_t from_packet_total_dropped;
uint64_t to_packet_total_dropped;
struct ecm_db_host_instance *hi;
struct ecm_db_node_instance *ni;
int aci_index;
int aci_count;
ip_addr_t __attribute__((unused)) group_ip;
struct ecm_front_end_connection_instance *feci;
struct ecm_classifier_instance *assignments[ECM_CLASSIFIER_TYPES];
int32_t first_interface;
struct ecm_db_iface_instance *interfaces[ECM_DB_IFACE_HEIRARCHY_MAX];
DEBUG_TRACE("Prep conn msg for %p\n", ci);
/*
* Identify expiration
*/
spin_lock_bh(&ecm_db_lock);
if (ci->defunct_timer.group == ECM_DB_TIMER_GROUPS_MAX) {
expires_in = -1;
} else {
expires_in = (long int)(ci->defunct_timer.timeout - ecm_db_time);
if (expires_in <= 0) {
expires_in = 0;
}
}
regen_success = ci->regen_success;
regen_fail = ci->regen_fail;
regen_required = ci->regen_required;
regen_occurances = ci->regen_occurances;
regen_in_progress = ci->regen_in_progress;
generation = ci->generation;
global_generation = ecm_db_connection_generation;
spin_unlock_bh(&ecm_db_lock);
/*
* Extract information from the connection for inclusion into the message
*/
sport = ci->mapping_from->port;
sport_nat = ci->mapping_nat_from->port;
dport = ci->mapping_to->port;
dport_nat = ci->mapping_nat_to->port;
hi = ci->mapping_to->host;
ecm_ip_addr_to_string(dip_address, hi->address);
ni = ci->to_node;
sprintf(dnode_address, "%pM", ni->address);
hi = ci->mapping_nat_to->host;
ecm_ip_addr_to_string(dip_address_nat, hi->address);
hi = ci->mapping_from->host;
ecm_ip_addr_to_string(sip_address, hi->address);
ni = ci->from_node;
sprintf(snode_address, "%pM", ni->address);
hi = ci->mapping_nat_from->host;
ecm_ip_addr_to_string(sip_address_nat, hi->address);
ni = ci->to_nat_node;
sprintf(dnode_address_nat, "%pM", ni->address);
ni = ci->from_nat_node;
sprintf(snode_address_nat, "%pM", ni->address);
direction = ci->direction;
ip_version = ci->ip_version;
protocol = ci->protocol;
is_routed = ci->is_routed;
time_added = ci->time_added;
serial = ci->serial;
ecm_db_connection_data_stats_get(ci, &from_data_total, &to_data_total,
&from_packet_total, &to_packet_total,
&from_data_total_dropped, &to_data_total_dropped,
&from_packet_total_dropped, &to_packet_total_dropped);
if ((result = ecm_state_prefix_add(sfi, "conn"))) {
return result;
}
if ((result = ecm_state_prefix_index_add(sfi, serial))) {
return result;
}
if ((result = ecm_state_write(sfi, "serial", "%u", serial))) {
return result;
}
if ((result = ecm_state_write(sfi, "sip_address", "%s", sip_address))) {
return result;
}
if ((result = ecm_state_write(sfi, "sip_address_nat", "%s", sip_address_nat))) {
return result;
}
if ((result = ecm_state_write(sfi, "sport", "%d", sport))) {
return result;
}
if ((result = ecm_state_write(sfi, "sport_nat", "%d", sport_nat))) {
return result;
}
if ((result = ecm_state_write(sfi, "snode_address", "%s", snode_address))) {
return result;
}
if ((result = ecm_state_write(sfi, "snode_address_nat", "%s", snode_address_nat))) {
return result;
}
if ((result = ecm_state_write(sfi, "dip_address", "%s", dip_address))) {
return result;
}
if ((result = ecm_state_write(sfi, "dip_address_nat", "%s", dip_address_nat))) {
return result;
}
if ((result = ecm_state_write(sfi, "dport", "%d", dport))) {
return result;
}
if ((result = ecm_state_write(sfi, "dport_nat", "%d", dport_nat))) {
return result;
}
if ((result = ecm_state_write(sfi, "dnode_address", "%s", dnode_address))) {
return result;
}
if ((result = ecm_state_write(sfi, "dnode_address_nat", "%s", dnode_address_nat))) {
return result;
}
if ((result = ecm_state_write(sfi, "ip_version", "%d", ip_version))) {
return result;
}
if ((result = ecm_state_write(sfi, "protocol", "%d", protocol))) {
return result;
}
if ((result = ecm_state_write(sfi, "is_routed", "%d", is_routed))) {
return result;
}
if ((result = ecm_state_write(sfi, "expires", "%ld", expires_in))) {
return result;
}
if ((result = ecm_state_write(sfi, "direction", "%d", direction))) {
return result;
}
if ((result = ecm_state_write(sfi, "time_added", "%u", time_added))) {
return result;
}
if ((result = ecm_state_write(sfi, "regen_success", "%u", regen_success))) {
return result;
}
if ((result = ecm_state_write(sfi, "regen_fail", "%u", regen_fail))) {
return result;
}
if ((result = ecm_state_write(sfi, "regen_required", "%u", regen_required))) {
return result;
}
if ((result = ecm_state_write(sfi, "regen_occurances", "%u", regen_occurances))) {
return result;
}
if ((result = ecm_state_write(sfi, "regen_in_progress", "%u", regen_in_progress))) {
return result;
}
if ((result = ecm_state_write(sfi, "generation", "%u/%u", generation, global_generation))) {
return result;
}
/*
* NOTE: These advanced stats are not conditional compiled.
* Connections always contain these stats
*/
if ((result = ecm_db_adv_stats_state_write(sfi, from_data_total, to_data_total,
from_packet_total, to_packet_total, from_data_total_dropped,
to_data_total_dropped, from_packet_total_dropped,
to_packet_total_dropped))) {
return result;
}
if ((result = ecm_state_prefix_add(sfi, "from_interfaces"))) {
return result;
}
first_interface = ecm_db_connection_from_interfaces_get_and_ref(ci, interfaces);
result = ecm_db_connection_heirarchy_state_get(sfi, interfaces, first_interface);
ecm_db_connection_interfaces_deref(interfaces, first_interface);
if (result) {
return result;
}
if ((result = ecm_state_prefix_remove(sfi))) {
return result;
}
#ifdef ECM_MULTICAST_ENABLE
ecm_db_connection_to_address_get(ci, group_ip);
if (ecm_ip_addr_is_multicast(group_ip)) {
if ((result = ecm_state_prefix_add(sfi, "to_mc_interfaces"))) {
return result;
}
if ((result = ecm_db_multicast_to_interfaces_xml_state_get(ci, sfi))) {
return result;
}
if ((result = ecm_state_prefix_remove(sfi))) {
return result;
}
}
else {
if ((result = ecm_state_prefix_add(sfi, "to_interfaces"))) {
return result;
}
first_interface = ecm_db_connection_to_interfaces_get_and_ref(ci, interfaces);
result = ecm_db_connection_heirarchy_state_get(sfi, interfaces, first_interface);
ecm_db_connection_interfaces_deref(interfaces, first_interface);
if (result) {
return result;
}
if ((result = ecm_state_prefix_remove(sfi))) {
return result;
}
}
#else
if ((result = ecm_state_prefix_add(sfi, "to_interfaces"))) {
return result;
}
first_interface = ecm_db_connection_to_interfaces_get_and_ref(ci, interfaces);
result = ecm_db_connection_heirarchy_state_get(sfi, interfaces, first_interface);
ecm_db_connection_interfaces_deref(interfaces, first_interface);
if (result) {
return result;
}
if ((result = ecm_state_prefix_remove(sfi))) {
return result;
}
#endif
if ((result = ecm_state_prefix_add(sfi, "from_nat_interfaces"))) {
return result;
}
first_interface = ecm_db_connection_from_nat_interfaces_get_and_ref(ci, interfaces);
result = ecm_db_connection_heirarchy_state_get(sfi, interfaces, first_interface);
ecm_db_connection_interfaces_deref(interfaces, first_interface);
if (result) {
return result;
}
if ((result = ecm_state_prefix_remove(sfi))) {
return result;
}
if ((result = ecm_state_prefix_add(sfi, "to_nat_interfaces"))) {
return result;
}
first_interface = ecm_db_connection_to_nat_interfaces_get_and_ref(ci, interfaces);
result = ecm_db_connection_heirarchy_state_get(sfi, interfaces, first_interface);
ecm_db_connection_interfaces_deref(interfaces, first_interface);
if (result) {
return result;
}
if ((result = ecm_state_prefix_remove(sfi))) {
return result;
}
/*
* Output front end state
*/
feci = ecm_db_connection_front_end_get_and_ref(ci);
result = feci->state_get(feci, sfi);
feci->deref(feci);
if (result) {
return result;
}
if ((result = ecm_state_prefix_add(sfi, "classifiers"))) {
return result;
}
/*
* Grab references to the assigned classifiers so we can produce state for them
*/
aci_count = ecm_db_connection_classifier_assignments_get_and_ref(ci, assignments);
/*
* Iterate the assigned classifiers and provide a state record for each
*/
for (aci_index = 0; aci_index < aci_count; ++aci_index) {
struct ecm_classifier_instance *aci;
aci = assignments[aci_index];
result = aci->state_get(aci, sfi);
if (result) {
ecm_db_connection_assignments_release(aci_count, assignments);
return result;
}
}
ecm_db_connection_assignments_release(aci_count, assignments);
if ((result = ecm_state_prefix_remove(sfi))) {
return result;
}
if ((result = ecm_state_prefix_remove(sfi))) {
return result;
}
return ecm_state_prefix_remove(sfi);
}
EXPORT_SYMBOL(ecm_db_connection_state_get);
/*
* ecm_db_mapping_state_get()
* Prepare a mapping message
*/
int ecm_db_mapping_state_get(struct ecm_state_file_instance *sfi, struct ecm_db_mapping_instance *mi)
{
int result;
int port;
char address[25];
int tcp_from;
int tcp_to;
int udp_from;
int udp_to;
int from;
int to;
int tcp_nat_from;
int tcp_nat_to;
int udp_nat_from;
int udp_nat_to;
int nat_from;
int nat_to;
uint32_t time_added;
struct ecm_db_host_instance *hi;
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
uint64_t from_data_total;
uint64_t to_data_total;
uint64_t from_packet_total;
uint64_t to_packet_total;
uint64_t from_data_total_dropped;
uint64_t to_data_total_dropped;
uint64_t from_packet_total_dropped;
uint64_t to_packet_total_dropped;
#endif
DEBUG_TRACE("Prep mapping msg for %p\n", mi);
/*
* Create a small xml stats element for our mapping.
* Extract information from the mapping for inclusion into the message
*/
ecm_db_mapping_port_count_get(mi, &tcp_from, &tcp_to, &udp_from, &udp_to, &from, &to,
&tcp_nat_from, &tcp_nat_to, &udp_nat_from, &udp_nat_to, &nat_from, &nat_to);
port = mi->port;
time_added = mi->time_added;
hi = mi->host;
ecm_ip_addr_to_string(address, hi->address);
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
ecm_db_mapping_data_stats_get(mi, &from_data_total, &to_data_total,
&from_packet_total, &to_packet_total,
&from_data_total_dropped, &to_data_total_dropped,
&from_packet_total_dropped, &to_packet_total_dropped);
#endif
if ((result = ecm_state_prefix_add(sfi, "mapping"))) {
return result;
}
if ((result = ecm_state_write(sfi, "port", "%d", port))) {
return result;
}
if ((result = ecm_state_write(sfi, "from", "%d", from))) {
return result;
}
if ((result = ecm_state_write(sfi, "to", "%d", to))) {
return result;
}
if ((result = ecm_state_write(sfi, "tcp_from", "%d", tcp_from))) {
return result;
}
if ((result = ecm_state_write(sfi, "tcp_to", "%d", tcp_to))) {
return result;
}
if ((result = ecm_state_write(sfi, "udp_from", "%d", udp_from))) {
return result;
}
if ((result = ecm_state_write(sfi, "udp_to", "%d", udp_to))) {
return result;
}
if ((result = ecm_state_write(sfi, "nat_from", "%d", nat_from))) {
return result;
}
if ((result = ecm_state_write(sfi, "nat_to", "%d", nat_to))) {
return result;
}
if ((result = ecm_state_write(sfi, "tcp_nat_from", "%d", tcp_nat_from))) {
return result;
}
if ((result = ecm_state_write(sfi, "tcp_nat_to", "%d", tcp_nat_to))) {
return result;
}
if ((result = ecm_state_write(sfi, "udp_nat_from", "%d", udp_nat_from))) {
return result;
}
if ((result = ecm_state_write(sfi, "udp_nat_to", "%d", udp_nat_to))) {
return result;
}
if ((result = ecm_state_write(sfi, "address", "%s", address))) {
return result;
}
if ((result = ecm_state_write(sfi, "time_added", "%u", time_added))) {
return result;
}
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
if ((result = ecm_db_adv_stats_state_write(sfi, from_data_total, to_data_total,
from_packet_total, to_packet_total, from_data_total_dropped,
to_data_total_dropped, from_packet_total_dropped,
to_packet_total_dropped))) {
return result;
}
#endif
return ecm_state_prefix_remove(sfi);
}
EXPORT_SYMBOL(ecm_db_mapping_state_get);
/*
* ecm_db_host_state_get()
* Prepare a host message
*/
int ecm_db_host_state_get(struct ecm_state_file_instance *sfi, struct ecm_db_host_instance *hi)
{
int result;
char address[50];
#ifdef ECM_DB_XREF_ENABLE
int mapping_count;
#endif
uint32_t time_added;
bool on_link;
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
uint64_t from_data_total;
uint64_t to_data_total;
uint64_t from_packet_total;
uint64_t to_packet_total;
uint64_t from_data_total_dropped;
uint64_t to_data_total_dropped;
uint64_t from_packet_total_dropped;
uint64_t to_packet_total_dropped;
#endif
DEBUG_TRACE("Prep host msg for %p\n", hi);
/*
* Create a small xml stats element for our host.
* Extract information from the host for inclusion into the message
*/
#ifdef ECM_DB_XREF_ENABLE
mapping_count = ecm_db_host_mapping_count_get(hi);
#endif
ecm_ip_addr_to_string(address, hi->address);
time_added = hi->time_added;
on_link = hi->on_link;
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
ecm_db_host_data_stats_get(hi, &from_data_total, &to_data_total,
&from_packet_total, &to_packet_total,
&from_data_total_dropped, &to_data_total_dropped,
&from_packet_total_dropped, &to_packet_total_dropped);
#endif
if ((result = ecm_state_prefix_add(sfi, "host"))) {
return result;
}
if ((result = ecm_state_write(sfi, "address", "%s", address))) {
return result;
}
if ((result = ecm_state_write(sfi, "time_added", "%u", time_added))) {
return result;
}
if ((result = ecm_state_write(sfi, "on_link", "%d", on_link))) {
return result;
}
#ifdef ECM_DB_XREF_ENABLE
if ((result = ecm_state_write(sfi, "mappings", "%d", mapping_count))) {
return result;
}
#endif
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
if ((result = ecm_db_adv_stats_state_write(sfi, from_data_total, to_data_total,
from_packet_total, to_packet_total, from_data_total_dropped,
to_data_total_dropped, from_packet_total_dropped,
to_packet_total_dropped))) {
return result;
}
#endif
return ecm_state_prefix_remove(sfi);
}
EXPORT_SYMBOL(ecm_db_host_state_get);
/*
* ecm_db_node_state_get()
* Prepare a node message
*/
int ecm_db_node_state_get(struct ecm_state_file_instance *sfi, struct ecm_db_node_instance *ni)
{
int result;
char address[25];
#ifdef ECM_DB_XREF_ENABLE
int from_connections_count;
int to_connections_count;
int from_nat_connections_count;
int to_nat_connections_count;
#endif
uint32_t time_added;
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
uint64_t from_data_total;
uint64_t to_data_total;
uint64_t from_packet_total;
uint64_t to_packet_total;
uint64_t from_data_total_dropped;
uint64_t to_data_total_dropped;
uint64_t from_packet_total_dropped;
uint64_t to_packet_total_dropped;
#endif
DEBUG_TRACE("Prep node msg for %p\n", ni);
/*
* Create a small xml stats block for our managed node, like:
* <node address="" hosts="" time_added="" from_data_total="" to_data_total="" />
*
* Extract information from the node for inclusion into the message
*/
#ifdef ECM_DB_XREF_ENABLE
spin_lock_bh(&ecm_db_lock);
from_connections_count = ni->from_connections_count;
to_connections_count = ni->to_connections_count;
from_nat_connections_count = ni->from_nat_connections_count;
to_nat_connections_count = ni->to_nat_connections_count;
spin_unlock_bh(&ecm_db_lock);
#endif
time_added = ni->time_added;
sprintf(address, "%pM", ni->address);
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
ecm_db_node_data_stats_get(ni, &from_data_total, &to_data_total,
&from_packet_total, &to_packet_total,
&from_data_total_dropped, &to_data_total_dropped,
&from_packet_total_dropped, &to_packet_total_dropped);
#endif
if ((result = ecm_state_prefix_add(sfi, "node"))) {
return result;
}
if ((result = ecm_state_write(sfi, "address", "%s", address))) {
return result;
}
if ((result = ecm_state_write(sfi, "time_added", "%u", time_added))) {
return result;
}
#ifdef ECM_DB_XREF_ENABLE
if ((result = ecm_state_write(sfi, "from_connections_count", "%d", from_connections_count))) {
return result;
}
if ((result = ecm_state_write(sfi, "to_connections_count", "%d", to_connections_count))) {
return result;
}
if ((result = ecm_state_write(sfi, "from_nat_connections_count", "%d", from_nat_connections_count))) {
return result;
}
if ((result = ecm_state_write(sfi, "to_nat_connections_count", "%d", to_nat_connections_count))) {
return result;
}
#endif
#ifdef ECM_DB_ADVANCED_STATS_ENABLE
if ((result = ecm_db_adv_stats_state_write(sfi, from_data_total, to_data_total,
from_packet_total, to_packet_total, from_data_total_dropped,
to_data_total_dropped, from_packet_total_dropped,
to_packet_total_dropped))) {
return result;
}
#endif
return ecm_state_prefix_remove(sfi);
}
EXPORT_SYMBOL(ecm_db_node_state_get);
/*
* ecm_db_connection_hash_table_lengths_get()
* Return hash table length
*/
int ecm_db_connection_hash_table_lengths_get(int index)
{
int length;
DEBUG_ASSERT((index >= 0) && (index < ECM_DB_MAPPING_HASH_SLOTS), "Bad protocol: %d\n", index);
spin_lock_bh(&ecm_db_lock);
length = ecm_db_connection_table_lengths[index];
spin_unlock_bh(&ecm_db_lock);
return length;
}
EXPORT_SYMBOL(ecm_db_connection_hash_table_lengths_get);
/*
* ecm_db_connection_hash_index_get_next()
* Given a hash index, return the next one OR return -1 for no more hash indicies to return.
*/
int ecm_db_connection_hash_index_get_next(int index)
{
index++;
if (index >= ECM_DB_CONNECTION_SERIAL_HASH_SLOTS) {
return -1;
}
return index;
}
EXPORT_SYMBOL(ecm_db_connection_hash_index_get_next);
/*
* ecm_db_connection_hash_index_get_first()
* Return first hash index
*/
int ecm_db_connection_hash_index_get_first(void)
{
return 0;
}
EXPORT_SYMBOL(ecm_db_connection_hash_index_get_first);
/*
* ecm_db_mapping_hash_table_lengths_get()
* Return hash table length
*/
int ecm_db_mapping_hash_table_lengths_get(int index)
{
int length;
DEBUG_ASSERT((index >= 0) && (index < ECM_DB_MAPPING_HASH_SLOTS), "Bad protocol: %d\n", index);
spin_lock_bh(&ecm_db_lock);
length = ecm_db_mapping_table_lengths[index];
spin_unlock_bh(&ecm_db_lock);
return length;
}
EXPORT_SYMBOL(ecm_db_mapping_hash_table_lengths_get);
/*
* ecm_db_mapping_hash_index_get_next()
* Given a hash index, return the next one OR return -1 for no more hash indicies to return.
*/
int ecm_db_mapping_hash_index_get_next(int index)
{
index++;
if (index >= ECM_DB_MAPPING_HASH_SLOTS) {
return -1;
}
return index;
}
EXPORT_SYMBOL(ecm_db_mapping_hash_index_get_next);
/*
* ecm_db_mapping_hash_index_get_first()
* Return first hash index
*/
int ecm_db_mapping_hash_index_get_first(void)
{
return 0;
}
EXPORT_SYMBOL(ecm_db_mapping_hash_index_get_first);
/*
* ecm_db_host_hash_table_lengths_get()
* Return hash table length
*/
int ecm_db_host_hash_table_lengths_get(int index)
{
int length;
DEBUG_ASSERT((index >= 0) && (index < ECM_DB_HOST_HASH_SLOTS), "Bad protocol: %d\n", index);
spin_lock_bh(&ecm_db_lock);
length = ecm_db_host_table_lengths[index];
spin_unlock_bh(&ecm_db_lock);
return length;
}
EXPORT_SYMBOL(ecm_db_host_hash_table_lengths_get);
/*
* ecm_db_host_hash_index_get_next()
* Given a hash index, return the next one OR return -1 for no more hash indicies to return.
*/
int ecm_db_host_hash_index_get_next(int index)
{
index++;
if (index >= ECM_DB_HOST_HASH_SLOTS) {
return -1;
}
return index;
}
EXPORT_SYMBOL(ecm_db_host_hash_index_get_next);
/*
* ecm_db_host_hash_index_get_first()
* Return first hash index
*/
int ecm_db_host_hash_index_get_first(void)
{
return 0;
}
EXPORT_SYMBOL(ecm_db_host_hash_index_get_first);
/*
* ecm_db_node_hash_table_lengths_get()
* Return hash table length
*/
int ecm_db_node_hash_table_lengths_get(int index)
{
int length;
DEBUG_ASSERT((index >= 0) && (index < ECM_DB_NODE_HASH_SLOTS), "Bad protocol: %d\n", index);
spin_lock_bh(&ecm_db_lock);
length = ecm_db_node_table_lengths[index];
spin_unlock_bh(&ecm_db_lock);
return length;
}
EXPORT_SYMBOL(ecm_db_node_hash_table_lengths_get);
/*
* ecm_db_node_hash_index_get_next()
* Given a hash index, return the next one OR return -1 for no more hash indicies to return.
*/
int ecm_db_node_hash_index_get_next(int index)
{
index++;
if (index >= ECM_DB_NODE_HASH_SLOTS) {
return -1;
}
return index;
}
EXPORT_SYMBOL(ecm_db_node_hash_index_get_next);
/*
* ecm_db_node_hash_index_get_first()
* Return first hash index
*/
int ecm_db_node_hash_index_get_first(void)
{
return 0;
}
EXPORT_SYMBOL(ecm_db_node_hash_index_get_first);
/*
* ecm_db_iface_hash_table_lengths_get()
* Return hash table length
*/
int ecm_db_iface_hash_table_lengths_get(int index)
{
int length;
DEBUG_ASSERT((index >= 0) && (index < ECM_DB_IFACE_HASH_SLOTS), "Bad protocol: %d\n", index);
spin_lock_bh(&ecm_db_lock);
length = ecm_db_iface_table_lengths[index];
spin_unlock_bh(&ecm_db_lock);
return length;
}
EXPORT_SYMBOL(ecm_db_iface_hash_table_lengths_get);
/*
* ecm_db_iface_hash_index_get_next()
* Given a hash index, return the next one OR return -1 for no more hash indicies to return.
*/
int ecm_db_iface_hash_index_get_next(int index)
{
index++;
if (index >= ECM_DB_IFACE_HASH_SLOTS) {
return -1;
}
return index;
}
EXPORT_SYMBOL(ecm_db_iface_hash_index_get_next);
/*
* ecm_db_iface_hash_index_get_first()
* Return first hash index
*/
int ecm_db_iface_hash_index_get_first(void)
{
return 0;
}
EXPORT_SYMBOL(ecm_db_iface_hash_index_get_first);
/*
* ecm_db_protocol_get_next()
* Given a number, return the next one OR return -1 for no more protocol numbers to return.
*/
int ecm_db_protocol_get_next(int protocol)
{
protocol++;
if (protocol >= ECM_DB_PROTOCOL_COUNT) {
return -1;
}
return protocol;
}
EXPORT_SYMBOL(ecm_db_protocol_get_next);
/*
* ecm_db_protocol_get_first()
* Return first protocol number
*/
int ecm_db_protocol_get_first(void)
{
return 0;
}
EXPORT_SYMBOL(ecm_db_protocol_get_first);
#endif
/*
* ecm_db_iface_add_ethernet()
* Add a iface instance into the database
*/
void ecm_db_iface_add_ethernet(struct ecm_db_iface_instance *ii, uint8_t *address, char *name, int32_t mtu,
int32_t interface_identifier, int32_t ae_interface_identifier,
ecm_db_iface_final_callback_t final, void *arg)
{
ecm_db_iface_hash_t hash_index;
ecm_db_iface_id_hash_t iface_id_hash_index;
struct ecm_db_listener_instance *li;
struct ecm_db_interface_info_ethernet *type_info;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
DEBUG_ASSERT(address, "%p: address null\n", ii);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii);
#endif
DEBUG_ASSERT(!(ii->flags & ECM_DB_IFACE_FLAGS_INSERTED), "%p: inserted\n", ii);
DEBUG_ASSERT(name, "%p: no name given\n", ii);
spin_unlock_bh(&ecm_db_lock);
/*
* Record general info
*/
ii->type = ECM_DB_IFACE_TYPE_ETHERNET;
#ifdef ECM_STATE_OUTPUT_ENABLE
ii->state_get = ecm_db_iface_ethernet_state_get;
#endif
ii->arg = arg;
ii->final = final;
strcpy(ii->name, name);
ii->mtu = mtu;
ii->interface_identifier = interface_identifier;
ii->ae_interface_identifier = ae_interface_identifier;
/*
* Type specific info
*/
type_info = &ii->type_info.ethernet;
memcpy(type_info->address, address, ETH_ALEN);
/*
* Compute hash chain for insertion
*/
hash_index = ecm_db_iface_generate_hash_index_ethernet(address);
ii->hash_index = hash_index;
iface_id_hash_index = ecm_db_iface_id_generate_hash_index(interface_identifier);
ii->iface_id_hash_index = iface_id_hash_index;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
ii->flags |= ECM_DB_IFACE_FLAGS_INSERTED;
ii->prev = NULL;
ii->next = ecm_db_interfaces;
if (ecm_db_interfaces) {
ecm_db_interfaces->prev = ii;
}
ecm_db_interfaces = ii;
/*
* Insert into chain
*/
ii->hash_next = ecm_db_iface_table[hash_index];
if (ecm_db_iface_table[hash_index]) {
ecm_db_iface_table[hash_index]->hash_prev = ii;
}
ecm_db_iface_table[hash_index] = ii;
ecm_db_iface_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_iface_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ii, ecm_db_iface_table_lengths[hash_index]);
DEBUG_INFO("%p: interface inserted at hash index %u, hash prev is %p, type: %d\n", ii, ii->hash_index, ii->hash_prev, ii->type);
/*
* Insert into interface identifier chain
*/
ii->iface_id_hash_next = ecm_db_iface_id_table[iface_id_hash_index];
if (ecm_db_iface_id_table[iface_id_hash_index]) {
ecm_db_iface_id_table[iface_id_hash_index]->iface_id_hash_prev = ii;
}
ecm_db_iface_id_table[iface_id_hash_index] = ii;
ecm_db_iface_id_table_lengths[iface_id_hash_index]++;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[iface_id_hash_index] > 0, "%p: invalid iface id table len %d\n", ii, ecm_db_iface_id_table_lengths[iface_id_hash_index]);
/*
* Set time of addition
*/
ii->time_added = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw iface added event\n", ii);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->iface_added) {
li->iface_added(li->arg, ii);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_iface_add_ethernet);
#ifdef ECM_INTERFACE_BOND_ENABLE
/*
* ecm_db_iface_add_lag()
* Add a iface instance into the database
*/
void ecm_db_iface_add_lag(struct ecm_db_iface_instance *ii, uint8_t *address, char *name, int32_t mtu,
int32_t interface_identifier, int32_t ae_interface_identifier,
ecm_db_iface_final_callback_t final, void *arg)
{
ecm_db_iface_hash_t hash_index;
ecm_db_iface_id_hash_t iface_id_hash_index;
struct ecm_db_listener_instance *li;
struct ecm_db_interface_info_lag *type_info;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
DEBUG_ASSERT(address, "%p: address null\n", ii);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii);
#endif
DEBUG_ASSERT(!(ii->flags & ECM_DB_IFACE_FLAGS_INSERTED), "%p: inserted\n", ii);
DEBUG_ASSERT(name, "%p: no name given\n", ii);
spin_unlock_bh(&ecm_db_lock);
/*
* Record general info
*/
ii->type = ECM_DB_IFACE_TYPE_LAG;
#ifdef ECM_STATE_OUTPUT_ENABLE
ii->state_get = ecm_db_iface_lag_state_get;
#endif
ii->arg = arg;
ii->final = final;
strcpy(ii->name, name);
ii->mtu = mtu;
ii->interface_identifier = interface_identifier;
ii->ae_interface_identifier = ae_interface_identifier;
/*
* Type specific info
*/
type_info = &ii->type_info.lag;
memcpy(type_info->address, address, ETH_ALEN);
/*
* Compute hash chain for insertion
*/
hash_index = ecm_db_iface_generate_hash_index_ethernet(address);
ii->hash_index = hash_index;
iface_id_hash_index = ecm_db_iface_id_generate_hash_index(interface_identifier);
ii->iface_id_hash_index = iface_id_hash_index;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
ii->flags |= ECM_DB_IFACE_FLAGS_INSERTED;
ii->prev = NULL;
ii->next = ecm_db_interfaces;
if (ecm_db_interfaces) {
ecm_db_interfaces->prev = ii;
}
ecm_db_interfaces = ii;
/*
* Insert into chain
*/
ii->hash_next = ecm_db_iface_table[hash_index];
if (ecm_db_iface_table[hash_index]) {
ecm_db_iface_table[hash_index]->hash_prev = ii;
}
ecm_db_iface_table[hash_index] = ii;
ecm_db_iface_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_iface_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ii, ecm_db_iface_table_lengths[hash_index]);
DEBUG_INFO("%p: interface inserted at hash index %u, hash prev is %p, type: %d\n", ii, ii->hash_index, ii->hash_prev, ii->type);
/*
* Insert into interface identifier chain
*/
ii->iface_id_hash_next = ecm_db_iface_id_table[iface_id_hash_index];
if (ecm_db_iface_id_table[iface_id_hash_index]) {
ecm_db_iface_id_table[iface_id_hash_index]->iface_id_hash_prev = ii;
}
ecm_db_iface_id_table[iface_id_hash_index] = ii;
ecm_db_iface_id_table_lengths[iface_id_hash_index]++;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[iface_id_hash_index] > 0, "%p: invalid iface id table len %d\n", ii, ecm_db_iface_id_table_lengths[iface_id_hash_index]);
/*
* Set time of addition
*/
ii->time_added = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw iface added event\n", ii);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->iface_added) {
li->iface_added(li->arg, ii);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_iface_add_lag);
#endif
/*
* ecm_db_iface_add_bridge()
* Add a iface instance into the database
*/
void ecm_db_iface_add_bridge(struct ecm_db_iface_instance *ii, uint8_t *address, char *name, int32_t mtu,
int32_t interface_identifier, int32_t ae_interface_identifier,
ecm_db_iface_final_callback_t final, void *arg)
{
ecm_db_iface_hash_t hash_index;
ecm_db_iface_id_hash_t iface_id_hash_index;
struct ecm_db_listener_instance *li;
struct ecm_db_interface_info_bridge *type_info;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
DEBUG_ASSERT(address, "%p: address null\n", ii);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii);
#endif
DEBUG_ASSERT(!(ii->flags & ECM_DB_IFACE_FLAGS_INSERTED), "%p: inserted\n", ii);
DEBUG_ASSERT(name, "%p: no name given\n", ii);
spin_unlock_bh(&ecm_db_lock);
/*
* Record general info
*/
ii->type = ECM_DB_IFACE_TYPE_BRIDGE;
#ifdef ECM_STATE_OUTPUT_ENABLE
ii->state_get = ecm_db_iface_bridge_state_get;
#endif
ii->arg = arg;
ii->final = final;
strcpy(ii->name, name);
ii->mtu = mtu;
ii->interface_identifier = interface_identifier;
ii->ae_interface_identifier = ae_interface_identifier;
/*
* Type specific info
*/
type_info = &ii->type_info.bridge;
memcpy(type_info->address, address, ETH_ALEN);
/*
* Compute hash chain for insertion
*/
hash_index = ecm_db_iface_generate_hash_index_ethernet(address);
ii->hash_index = hash_index;
iface_id_hash_index = ecm_db_iface_id_generate_hash_index(interface_identifier);
ii->iface_id_hash_index = iface_id_hash_index;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
ii->flags |= ECM_DB_IFACE_FLAGS_INSERTED;
ii->prev = NULL;
ii->next = ecm_db_interfaces;
if (ecm_db_interfaces) {
ecm_db_interfaces->prev = ii;
}
ecm_db_interfaces = ii;
/*
* Insert into chain
*/
ii->hash_next = ecm_db_iface_table[hash_index];
if (ecm_db_iface_table[hash_index]) {
ecm_db_iface_table[hash_index]->hash_prev = ii;
}
ecm_db_iface_table[hash_index] = ii;
ecm_db_iface_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_iface_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ii, ecm_db_iface_table_lengths[hash_index]);
DEBUG_INFO("%p: interface inserted at hash index %u, hash prev is %p, type: %d\n", ii, ii->hash_index, ii->hash_prev, ii->type);
/*
* Insert into interface identifier chain
*/
ii->iface_id_hash_next = ecm_db_iface_id_table[iface_id_hash_index];
if (ecm_db_iface_id_table[iface_id_hash_index]) {
ecm_db_iface_id_table[iface_id_hash_index]->iface_id_hash_prev = ii;
}
ecm_db_iface_id_table[iface_id_hash_index] = ii;
ecm_db_iface_id_table_lengths[iface_id_hash_index]++;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[iface_id_hash_index] > 0, "%p: invalid iface id table len %d\n", ii, ecm_db_iface_id_table_lengths[iface_id_hash_index]);
/*
* Set time of addition
*/
ii->time_added = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw iface added event\n", ii);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->iface_added) {
li->iface_added(li->arg, ii);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_iface_add_bridge);
#ifdef ECM_INTERFACE_VLAN_ENABLE
/*
* ecm_db_iface_add_vlan()
* Add a iface instance into the database
*/
void ecm_db_iface_add_vlan(struct ecm_db_iface_instance *ii, uint8_t *address, uint16_t vlan_tag, uint16_t vlan_tpid, char *name, int32_t mtu,
int32_t interface_identifier, int32_t ae_interface_identifier,
ecm_db_iface_final_callback_t final, void *arg)
{
ecm_db_iface_hash_t hash_index;
ecm_db_iface_id_hash_t iface_id_hash_index;
struct ecm_db_listener_instance *li;
struct ecm_db_interface_info_vlan *type_info;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
DEBUG_ASSERT(address, "%p: address null\n", ii);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii);
#endif
DEBUG_ASSERT(!(ii->flags & ECM_DB_IFACE_FLAGS_INSERTED), "%p: inserted\n", ii);
DEBUG_ASSERT(name, "%p: no name given\n", ii);
spin_unlock_bh(&ecm_db_lock);
/*
* Record general info
*/
ii->type = ECM_DB_IFACE_TYPE_VLAN;
#ifdef ECM_STATE_OUTPUT_ENABLE
ii->state_get = ecm_db_iface_vlan_state_get;
#endif
ii->arg = arg;
ii->final = final;
strcpy(ii->name, name);
ii->mtu = mtu;
ii->interface_identifier = interface_identifier;
ii->ae_interface_identifier = ae_interface_identifier;
/*
* Type specific info
*/
type_info = &ii->type_info.vlan;
type_info->vlan_tag = vlan_tag;
type_info->vlan_tpid = vlan_tpid;
memcpy(type_info->address, address, ETH_ALEN);
/*
* Compute hash chain for insertion
*/
hash_index = ecm_db_iface_generate_hash_index_ethernet(address);
ii->hash_index = hash_index;
iface_id_hash_index = ecm_db_iface_id_generate_hash_index(interface_identifier);
ii->iface_id_hash_index = iface_id_hash_index;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
ii->flags |= ECM_DB_IFACE_FLAGS_INSERTED;
ii->prev = NULL;
ii->next = ecm_db_interfaces;
if (ecm_db_interfaces) {
ecm_db_interfaces->prev = ii;
}
ecm_db_interfaces = ii;
/*
* Insert into chain
*/
ii->hash_next = ecm_db_iface_table[hash_index];
if (ecm_db_iface_table[hash_index]) {
ecm_db_iface_table[hash_index]->hash_prev = ii;
}
ecm_db_iface_table[hash_index] = ii;
ecm_db_iface_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_iface_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ii, ecm_db_iface_table_lengths[hash_index]);
DEBUG_INFO("%p: interface inserted at hash index %u, hash prev is %p, type: %d\n", ii, ii->hash_index, ii->hash_prev, ii->type);
/*
* Insert into interface identifier chain
*/
ii->iface_id_hash_next = ecm_db_iface_id_table[iface_id_hash_index];
if (ecm_db_iface_id_table[iface_id_hash_index]) {
ecm_db_iface_id_table[iface_id_hash_index]->iface_id_hash_prev = ii;
}
ecm_db_iface_id_table[iface_id_hash_index] = ii;
ecm_db_iface_id_table_lengths[iface_id_hash_index]++;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[iface_id_hash_index] > 0, "%p: invalid iface id table len %d\n", ii, ecm_db_iface_id_table_lengths[iface_id_hash_index]);
/*
* Set time of addition
*/
ii->time_added = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw iface added event\n", ii);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->iface_added) {
li->iface_added(li->arg, ii);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_iface_add_vlan);
#endif
#ifdef ECM_INTERFACE_PPPOE_ENABLE
/*
* ecm_db_iface_add_pppoe()
* Add a iface instance into the database
*/
void ecm_db_iface_add_pppoe(struct ecm_db_iface_instance *ii, uint16_t pppoe_session_id, uint8_t *remote_mac,
char *name, int32_t mtu, int32_t interface_identifier,
int32_t ae_interface_identifier, ecm_db_iface_final_callback_t final,
void *arg)
{
ecm_db_iface_hash_t hash_index;
ecm_db_iface_id_hash_t iface_id_hash_index;
struct ecm_db_listener_instance *li;
struct ecm_db_interface_info_pppoe *type_info;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii);
#endif
DEBUG_ASSERT(!(ii->flags & ECM_DB_IFACE_FLAGS_INSERTED), "%p: inserted\n", ii);
DEBUG_ASSERT(name, "%p: no name given\n", ii);
spin_unlock_bh(&ecm_db_lock);
/*
* Record general info
*/
ii->type = ECM_DB_IFACE_TYPE_PPPOE;
#ifdef ECM_STATE_OUTPUT_ENABLE
ii->state_get = ecm_db_iface_pppoe_state_get;
#endif
ii->arg = arg;
ii->final = final;
strcpy(ii->name, name);
ii->mtu = mtu;
ii->interface_identifier = interface_identifier;
ii->ae_interface_identifier = ae_interface_identifier;
/*
* Type specific info
*/
type_info = &ii->type_info.pppoe;
type_info->pppoe_session_id = pppoe_session_id;
memcpy(type_info->remote_mac, remote_mac, ETH_ALEN);
/*
* Compute hash chain for insertion
*/
hash_index = ecm_db_iface_generate_hash_index_pppoe(pppoe_session_id);
ii->hash_index = hash_index;
iface_id_hash_index = ecm_db_iface_id_generate_hash_index(interface_identifier);
ii->iface_id_hash_index = iface_id_hash_index;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
ii->flags |= ECM_DB_IFACE_FLAGS_INSERTED;
ii->prev = NULL;
ii->next = ecm_db_interfaces;
if (ecm_db_interfaces) {
ecm_db_interfaces->prev = ii;
}
ecm_db_interfaces = ii;
/*
* Insert into chain
*/
ii->hash_next = ecm_db_iface_table[hash_index];
if (ecm_db_iface_table[hash_index]) {
ecm_db_iface_table[hash_index]->hash_prev = ii;
}
ecm_db_iface_table[hash_index] = ii;
ecm_db_iface_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_iface_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ii, ecm_db_iface_table_lengths[hash_index]);
DEBUG_INFO("%p: interface inserted at hash index %u, hash prev is %p, type: %d\n", ii, ii->hash_index, ii->hash_prev, ii->type);
/*
* Insert into interface identifier chain
*/
ii->iface_id_hash_next = ecm_db_iface_id_table[iface_id_hash_index];
if (ecm_db_iface_id_table[iface_id_hash_index]) {
ecm_db_iface_id_table[iface_id_hash_index]->iface_id_hash_prev = ii;
}
ecm_db_iface_id_table[iface_id_hash_index] = ii;
ecm_db_iface_id_table_lengths[iface_id_hash_index]++;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[iface_id_hash_index] > 0, "%p: invalid iface id table len %d\n", ii, ecm_db_iface_id_table_lengths[iface_id_hash_index]);
/*
* Set time of addition
*/
ii->time_added = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw iface added event\n", ii);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->iface_added) {
li->iface_added(li->arg, ii);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_iface_add_pppoe);
#endif
#ifdef ECM_INTERFACE_L2TPV2_ENABLE
/*
* ecm_db_iface_add_pppol2tpv2()
* Add a iface instance into the database
*/
void ecm_db_iface_add_pppol2tpv2(struct ecm_db_iface_instance *ii, struct ecm_db_interface_info_pppol2tpv2 *pppol2tpv2_info,
char *name, int32_t mtu, int32_t interface_identifier,
int32_t ae_interface_identifier, ecm_db_iface_final_callback_t final,
void *arg)
{
ecm_db_iface_hash_t hash_index;
ecm_db_iface_id_hash_t iface_id_hash_index;
struct ecm_db_listener_instance *li;
struct ecm_db_interface_info_pppol2tpv2 *type_info;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii);
#endif
DEBUG_ASSERT(!(ii->flags & ECM_DB_IFACE_FLAGS_INSERTED), "%p: inserted\n", ii);
DEBUG_ASSERT(name, "%p: no name given\n", ii);
spin_unlock_bh(&ecm_db_lock);
/*
* Record general info
*/
ii->type = ECM_DB_IFACE_TYPE_PPPOL2TPV2;
#ifdef ECM_STATE_OUTPUT_ENABLE
ii->state_get = ecm_db_iface_pppol2tpv2_state_get;
#endif
ii->arg = arg;
ii->final = final;
strlcpy(ii->name, name, IFNAMSIZ);
ii->mtu = mtu;
ii->interface_identifier = interface_identifier;
ii->ae_interface_identifier = ae_interface_identifier;
/*
* Type specific info
*/
type_info = &ii->type_info.pppol2tpv2;
memcpy(type_info, pppol2tpv2_info, sizeof(struct ecm_db_interface_info_pppol2tpv2));
/*
* Compute hash chain for insertion
*/
hash_index = ecm_db_iface_generate_hash_index_pppol2tpv2(type_info->l2tp.tunnel.tunnel_id,
type_info->l2tp.session.session_id);
ii->hash_index = hash_index;
iface_id_hash_index = ecm_db_iface_id_generate_hash_index(interface_identifier);
ii->iface_id_hash_index = iface_id_hash_index;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
ii->flags |= ECM_DB_IFACE_FLAGS_INSERTED;
ii->prev = NULL;
ii->next = ecm_db_interfaces;
if (ecm_db_interfaces) {
ecm_db_interfaces->prev = ii;
}
ecm_db_interfaces = ii;
/*
* Insert into chain
*/
ii->hash_next = ecm_db_iface_table[hash_index];
if (ecm_db_iface_table[hash_index]) {
ecm_db_iface_table[hash_index]->hash_prev = ii;
}
ecm_db_iface_table[hash_index] = ii;
ecm_db_iface_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_iface_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ii, ecm_db_iface_table_lengths[hash_index]);
DEBUG_INFO("%p: interface inserted at hash index %u, hash prev is %p, type: %d\n", ii, ii->hash_index, ii->hash_prev, ii->type);
/*
* Insert into interface identifier chain
*/
ii->iface_id_hash_next = ecm_db_iface_id_table[iface_id_hash_index];
if (ecm_db_iface_id_table[iface_id_hash_index]) {
ecm_db_iface_id_table[iface_id_hash_index]->iface_id_hash_prev = ii;
}
ecm_db_iface_id_table[iface_id_hash_index] = ii;
ecm_db_iface_id_table_lengths[iface_id_hash_index]++;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[iface_id_hash_index] > 0, "%p: invalid iface id table len %d\n", ii, ecm_db_iface_id_table_lengths[iface_id_hash_index]);
/*
* Set time of addition
*/
ii->time_added = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw iface added event\n", ii);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->iface_added) {
li->iface_added(li->arg, ii);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_iface_add_pppol2tpv2);
#endif
/*
* ecm_db_iface_add_unknown()
* Add a iface instance into the database
*/
void ecm_db_iface_add_unknown(struct ecm_db_iface_instance *ii, uint32_t os_specific_ident, char *name, int32_t mtu,
int32_t interface_identifier, int32_t ae_interface_identifier,
ecm_db_iface_final_callback_t final, void *arg)
{
ecm_db_iface_hash_t hash_index;
ecm_db_iface_id_hash_t iface_id_hash_index;
struct ecm_db_listener_instance *li;
struct ecm_db_interface_info_unknown *type_info;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii);
#endif
DEBUG_ASSERT(!(ii->flags & ECM_DB_IFACE_FLAGS_INSERTED), "%p: inserted\n", ii);
DEBUG_ASSERT(name, "%p: no name given\n", ii);
spin_unlock_bh(&ecm_db_lock);
/*
* Record general info
*/
ii->type = ECM_DB_IFACE_TYPE_UNKNOWN;
#ifdef ECM_STATE_OUTPUT_ENABLE
ii->state_get = ecm_db_iface_unknown_state_get;
#endif
ii->arg = arg;
ii->final = final;
strcpy(ii->name, name);
ii->mtu = mtu;
ii->interface_identifier = interface_identifier;
ii->ae_interface_identifier = ae_interface_identifier;
/*
* Type specific info
*/
type_info = &ii->type_info.unknown;
type_info->os_specific_ident = os_specific_ident;
/*
* Compute hash chain for insertion
*/
hash_index = ecm_db_iface_generate_hash_index_unknown(os_specific_ident);
ii->hash_index = hash_index;
iface_id_hash_index = ecm_db_iface_id_generate_hash_index(interface_identifier);
ii->iface_id_hash_index = iface_id_hash_index;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
ii->flags |= ECM_DB_IFACE_FLAGS_INSERTED;
ii->prev = NULL;
ii->next = ecm_db_interfaces;
if (ecm_db_interfaces) {
ecm_db_interfaces->prev = ii;
}
ecm_db_interfaces = ii;
/*
* Insert into chain
*/
ii->hash_next = ecm_db_iface_table[hash_index];
if (ecm_db_iface_table[hash_index]) {
ecm_db_iface_table[hash_index]->hash_prev = ii;
}
ecm_db_iface_table[hash_index] = ii;
ecm_db_iface_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_iface_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ii, ecm_db_iface_table_lengths[hash_index]);
DEBUG_INFO("%p: interface inserted at hash index %u, hash prev is %p, type: %d\n", ii, ii->hash_index, ii->hash_prev, ii->type);
/*
* Insert into interface identifier chain
*/
ii->iface_id_hash_next = ecm_db_iface_id_table[iface_id_hash_index];
if (ecm_db_iface_id_table[iface_id_hash_index]) {
ecm_db_iface_id_table[iface_id_hash_index]->iface_id_hash_prev = ii;
}
ecm_db_iface_id_table[iface_id_hash_index] = ii;
ecm_db_iface_id_table_lengths[iface_id_hash_index]++;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[iface_id_hash_index] > 0, "%p: invalid iface id table len %d\n", ii, ecm_db_iface_id_table_lengths[iface_id_hash_index]);
/*
* Set time of addition
*/
ii->time_added = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw iface added event\n", ii);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->iface_added) {
li->iface_added(li->arg, ii);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_iface_add_unknown);
/*
* ecm_db_iface_add_loopback()
* Add a iface instance into the database
*/
void ecm_db_iface_add_loopback(struct ecm_db_iface_instance *ii, uint32_t os_specific_ident, char *name, int32_t mtu,
int32_t interface_identifier, int32_t ae_interface_identifier,
ecm_db_iface_final_callback_t final, void *arg)
{
ecm_db_iface_hash_t hash_index;
ecm_db_iface_id_hash_t iface_id_hash_index;
struct ecm_db_listener_instance *li;
struct ecm_db_interface_info_loopback *type_info;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii);
#endif
DEBUG_ASSERT(!(ii->flags & ECM_DB_IFACE_FLAGS_INSERTED), "%p: inserted\n", ii);
DEBUG_ASSERT(name, "%p: no name given\n", ii);
spin_unlock_bh(&ecm_db_lock);
/*
* Record general info
*/
ii->type = ECM_DB_IFACE_TYPE_LOOPBACK;
#ifdef ECM_STATE_OUTPUT_ENABLE
ii->state_get = ecm_db_iface_loopback_state_get;
#endif
ii->arg = arg;
ii->final = final;
strcpy(ii->name, name);
ii->mtu = mtu;
ii->interface_identifier = interface_identifier;
ii->ae_interface_identifier = ae_interface_identifier;
/*
* Type specific info
*/
type_info = &ii->type_info.loopback;
type_info->os_specific_ident = os_specific_ident;
/*
* Compute hash chain for insertion
*/
hash_index = ecm_db_iface_generate_hash_index_loopback(os_specific_ident);
ii->hash_index = hash_index;
iface_id_hash_index = ecm_db_iface_id_generate_hash_index(interface_identifier);
ii->iface_id_hash_index = iface_id_hash_index;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
ii->flags |= ECM_DB_IFACE_FLAGS_INSERTED;
ii->prev = NULL;
ii->next = ecm_db_interfaces;
if (ecm_db_interfaces) {
ecm_db_interfaces->prev = ii;
}
ecm_db_interfaces = ii;
/*
* Insert into chain
*/
ii->hash_next = ecm_db_iface_table[hash_index];
if (ecm_db_iface_table[hash_index]) {
ecm_db_iface_table[hash_index]->hash_prev = ii;
}
ecm_db_iface_table[hash_index] = ii;
ecm_db_iface_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_iface_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ii, ecm_db_iface_table_lengths[hash_index]);
DEBUG_INFO("%p: interface inserted at hash index %u, hash prev is %p, type: %d\n", ii, ii->hash_index, ii->hash_prev, ii->type);
/*
* Insert into interface identifier chain
*/
ii->iface_id_hash_next = ecm_db_iface_id_table[iface_id_hash_index];
if (ecm_db_iface_id_table[iface_id_hash_index]) {
ecm_db_iface_id_table[iface_id_hash_index]->iface_id_hash_prev = ii;
}
ecm_db_iface_id_table[iface_id_hash_index] = ii;
ecm_db_iface_id_table_lengths[iface_id_hash_index]++;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[iface_id_hash_index] > 0, "%p: invalid iface id table len %d\n", ii, ecm_db_iface_id_table_lengths[iface_id_hash_index]);
/*
* Set time of addition
*/
ii->time_added = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw iface added event\n", ii);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->iface_added) {
li->iface_added(li->arg, ii);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_iface_add_loopback);
#ifdef ECM_INTERFACE_SIT_ENABLE
/*
* ecm_db_iface_sit_daddr_is_null()
* The sit addr is null or not
*/
bool ecm_db_iface_sit_daddr_is_null(struct ecm_db_iface_instance *ii)
{
return ii->type_info.sit.daddr[0] == 0;
}
EXPORT_SYMBOL(ecm_db_iface_sit_daddr_is_null);
/*
* ecm_db_iface_add_sit()
* Add a iface instance into the database
*/
void ecm_db_iface_add_sit(struct ecm_db_iface_instance *ii, struct ecm_db_interface_info_sit *type_info, char *name, int32_t mtu,
int32_t interface_identifier, int32_t ae_interface_identifier,
ecm_db_iface_final_callback_t final, void *arg)
{
ecm_db_iface_hash_t hash_index;
ecm_db_iface_id_hash_t iface_id_hash_index;
struct ecm_db_listener_instance *li;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii);
#endif
DEBUG_ASSERT(!(ii->flags & ECM_DB_IFACE_FLAGS_INSERTED), "%p: inserted\n", ii);
DEBUG_ASSERT(name, "%p: no name given\n", ii);
spin_unlock_bh(&ecm_db_lock);
/*
* Record general info
*/
ii->type = ECM_DB_IFACE_TYPE_SIT;
#ifdef ECM_STATE_OUTPUT_ENABLE
ii->state_get = ecm_db_iface_sit_state_get;
#endif
ii->arg = arg;
ii->final = final;
strcpy(ii->name, name);
ii->mtu = mtu;
ii->interface_identifier = interface_identifier;
ii->ae_interface_identifier = ae_interface_identifier;
/*
* Type specific info to be copied
*/
ii->type_info.sit = *type_info;
/*
* Compute hash chain for insertion
*/
hash_index = ecm_db_iface_generate_hash_index_sit(type_info->saddr, type_info->daddr);
ii->hash_index = hash_index;
iface_id_hash_index = ecm_db_iface_id_generate_hash_index(interface_identifier);
ii->iface_id_hash_index = iface_id_hash_index;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
ii->flags |= ECM_DB_IFACE_FLAGS_INSERTED;
ii->prev = NULL;
ii->next = ecm_db_interfaces;
if (ecm_db_interfaces) {
ecm_db_interfaces->prev = ii;
}
ecm_db_interfaces = ii;
/*
* Insert into chain
*/
ii->hash_next = ecm_db_iface_table[hash_index];
if (ecm_db_iface_table[hash_index]) {
ecm_db_iface_table[hash_index]->hash_prev = ii;
}
ecm_db_iface_table[hash_index] = ii;
ecm_db_iface_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_iface_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ii, ecm_db_iface_table_lengths[hash_index]);
DEBUG_INFO("%p: interface inserted at hash index %u, hash prev is %p, type: %d\n", ii, ii->hash_index, ii->hash_prev, ii->type);
/*
* Insert into interface identifier chain
*/
ii->iface_id_hash_next = ecm_db_iface_id_table[iface_id_hash_index];
if (ecm_db_iface_id_table[iface_id_hash_index]) {
ecm_db_iface_id_table[iface_id_hash_index]->iface_id_hash_prev = ii;
}
ecm_db_iface_id_table[iface_id_hash_index] = ii;
ecm_db_iface_id_table_lengths[iface_id_hash_index]++;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[iface_id_hash_index] > 0, "%p: invalid iface id table len %d\n", ii, ecm_db_iface_id_table_lengths[iface_id_hash_index]);
/*
* Set time of addition
*/
ii->time_added = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw iface added event\n", ii);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->iface_added) {
li->iface_added(li->arg, ii);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_iface_add_sit);
#endif
#ifdef ECM_INTERFACE_TUNIPIP6_ENABLE
#ifdef ECM_IPV6_ENABLE
/*
* ecm_db_iface_add_tunipip6()
* Add a iface instance into the database
*/
void ecm_db_iface_add_tunipip6(struct ecm_db_iface_instance *ii, struct ecm_db_interface_info_tunipip6 *type_info, char *name, int32_t mtu,
int32_t interface_identifier, int32_t ae_interface_identifier,
ecm_db_iface_final_callback_t final, void *arg)
{
ecm_db_iface_hash_t hash_index;
ecm_db_iface_id_hash_t iface_id_hash_index;
struct ecm_db_listener_instance *li;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii);
#endif
DEBUG_ASSERT(!(ii->flags & ECM_DB_IFACE_FLAGS_INSERTED), "%p: inserted\n", ii);
DEBUG_ASSERT(name, "%p: no name given\n", ii);
spin_unlock_bh(&ecm_db_lock);
/*
* Record general info
*/
ii->type = ECM_DB_IFACE_TYPE_TUNIPIP6;
#ifdef ECM_STATE_OUTPUT_ENABLE
ii->state_get = ecm_db_iface_tunipip6_state_get;
#endif
ii->arg = arg;
ii->final = final;
strcpy(ii->name, name);
ii->mtu = mtu;
ii->interface_identifier = interface_identifier;
ii->ae_interface_identifier = ae_interface_identifier;
/*
* Type specific info to be copied
*/
ii->type_info.tunipip6 = *type_info;
/*
* Compute hash chain for insertion
*/
hash_index = ecm_db_iface_generate_hash_index_tunipip6(type_info->saddr, type_info->daddr);
ii->hash_index = hash_index;
iface_id_hash_index = ecm_db_iface_id_generate_hash_index(interface_identifier);
ii->iface_id_hash_index = iface_id_hash_index;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
ii->flags |= ECM_DB_IFACE_FLAGS_INSERTED;
ii->prev = NULL;
ii->next = ecm_db_interfaces;
if (ecm_db_interfaces) {
ecm_db_interfaces->prev = ii;
}
ecm_db_interfaces = ii;
/*
* Insert into chain
*/
ii->hash_next = ecm_db_iface_table[hash_index];
if (ecm_db_iface_table[hash_index]) {
ecm_db_iface_table[hash_index]->hash_prev = ii;
}
ecm_db_iface_table[hash_index] = ii;
ecm_db_iface_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_iface_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ii, ecm_db_iface_table_lengths[hash_index]);
DEBUG_INFO("%p: interface inserted at hash index %u, hash prev is %p, type: %d\n", ii, ii->hash_index, ii->hash_prev, ii->type);
/*
* Insert into interface identifier chain
*/
ii->iface_id_hash_next = ecm_db_iface_id_table[iface_id_hash_index];
if (ecm_db_iface_id_table[iface_id_hash_index]) {
ecm_db_iface_id_table[iface_id_hash_index]->iface_id_hash_prev = ii;
}
ecm_db_iface_id_table[iface_id_hash_index] = ii;
ecm_db_iface_id_table_lengths[iface_id_hash_index]++;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[iface_id_hash_index] > 0, "%p: invalid iface id table len %d\n", ii, ecm_db_iface_id_table_lengths[iface_id_hash_index]);
/*
* Set time of addition
*/
ii->time_added = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw iface added event\n", ii);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->iface_added) {
li->iface_added(li->arg, ii);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_iface_add_tunipip6);
#endif
#endif
#ifdef ECM_INTERFACE_IPSEC_ENABLE
/*
* ecm_db_iface_add_ipsec_tunnel()
* Add a iface instance into the database
*
* GGG TODO This needs to take ipsec tunnel endpoint information etc. something very appropriate for ipsec tunnels, anyhow.
*/
void ecm_db_iface_add_ipsec_tunnel(struct ecm_db_iface_instance *ii, uint32_t os_specific_ident, char *name, int32_t mtu,
int32_t interface_identifier, int32_t ae_interface_identifier,
ecm_db_iface_final_callback_t final, void *arg)
{
ecm_db_iface_hash_t hash_index;
ecm_db_iface_id_hash_t iface_id_hash_index;
struct ecm_db_listener_instance *li;
struct ecm_db_interface_info_ipsec_tunnel *type_info;
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii);
#ifdef ECM_DB_XREF_ENABLE
DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii);
#endif
DEBUG_ASSERT(!(ii->flags & ECM_DB_IFACE_FLAGS_INSERTED), "%p: inserted\n", ii);
DEBUG_ASSERT(name, "%p: no name given\n", ii);
spin_unlock_bh(&ecm_db_lock);
/*
* Record general info
*/
ii->type = ECM_DB_IFACE_TYPE_IPSEC_TUNNEL;
#ifdef ECM_STATE_OUTPUT_ENABLE
ii->state_get = ecm_db_iface_ipsec_tunnel_state_get;
#endif
ii->arg = arg;
ii->final = final;
strcpy(ii->name, name);
ii->mtu = mtu;
ii->interface_identifier = interface_identifier;
ii->ae_interface_identifier = ae_interface_identifier;
/*
* Type specific info
*/
type_info = &ii->type_info.ipsec_tunnel;
type_info->os_specific_ident = os_specific_ident;
/*
* Compute hash chain for insertion
*/
hash_index = ecm_db_iface_generate_hash_index_ipsec_tunnel(os_specific_ident);
ii->hash_index = hash_index;
iface_id_hash_index = ecm_db_iface_id_generate_hash_index(interface_identifier);
ii->iface_id_hash_index = iface_id_hash_index;
/*
* Add into the global list
*/
spin_lock_bh(&ecm_db_lock);
ii->flags |= ECM_DB_IFACE_FLAGS_INSERTED;
ii->prev = NULL;
ii->next = ecm_db_interfaces;
if (ecm_db_interfaces) {
ecm_db_interfaces->prev = ii;
}
ecm_db_interfaces = ii;
/*
* Insert into chain
*/
ii->hash_next = ecm_db_iface_table[hash_index];
if (ecm_db_iface_table[hash_index]) {
ecm_db_iface_table[hash_index]->hash_prev = ii;
}
ecm_db_iface_table[hash_index] = ii;
ecm_db_iface_table_lengths[hash_index]++;
DEBUG_ASSERT(ecm_db_iface_table_lengths[hash_index] > 0, "%p: invalid table len %d\n", ii, ecm_db_iface_table_lengths[hash_index]);
DEBUG_INFO("%p: interface inserted at hash index %u, hash prev is %p, type: %d\n", ii, ii->hash_index, ii->hash_prev, ii->type);
/*
* Insert into interface identifier chain
*/
ii->iface_id_hash_next = ecm_db_iface_id_table[iface_id_hash_index];
if (ecm_db_iface_id_table[iface_id_hash_index]) {
ecm_db_iface_id_table[iface_id_hash_index]->iface_id_hash_prev = ii;
}
ecm_db_iface_id_table[iface_id_hash_index] = ii;
ecm_db_iface_id_table_lengths[iface_id_hash_index]++;
DEBUG_ASSERT(ecm_db_iface_id_table_lengths[iface_id_hash_index] > 0, "%p: invalid iface id table len %d\n", ii, ecm_db_iface_id_table_lengths[iface_id_hash_index]);
/*
* Set time of addition
*/
ii->time_added = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
/*
* Throw add event to the listeners
*/
DEBUG_TRACE("%p: Throw iface added event\n", ii);
li = ecm_db_listeners_get_and_ref_first();
while (li) {
struct ecm_db_listener_instance *lin;
if (li->iface_added) {
li->iface_added(li->arg, ii);
}
/*
* Get next listener
*/
lin = ecm_db_listener_get_and_ref_next(li);
ecm_db_listener_deref(li);
li = lin;
}
}
EXPORT_SYMBOL(ecm_db_iface_add_ipsec_tunnel);
#endif
/*
* ecm_db_listener_add()
* Add a listener instance into the database.
*/
void ecm_db_listener_add(struct ecm_db_listener_instance *li,
ecm_db_iface_listener_added_callback_t iface_added,
ecm_db_iface_listener_removed_callback_t iface_removed,
ecm_db_node_listener_added_callback_t node_added,
ecm_db_node_listener_removed_callback_t node_removed,
ecm_db_host_listener_added_callback_t host_added,
ecm_db_host_listener_removed_callback_t host_removed,
ecm_db_mapping_listener_added_callback_t mapping_added,
ecm_db_mapping_listener_removed_callback_t mapping_removed,
ecm_db_connection_listener_added_callback_t connection_added,
ecm_db_connection_listener_removed_callback_t connection_removed,
ecm_db_listener_final_callback_t final,
void *arg)
{
spin_lock_bh(&ecm_db_lock);
DEBUG_CHECK_MAGIC(li, ECM_DB_LISTENER_INSTANCE_MAGIC, "%p: magic failed\n", li);
DEBUG_ASSERT(!(li->flags & ECM_DB_LISTENER_FLAGS_INSERTED), "%p: inserted\n", li);
spin_unlock_bh(&ecm_db_lock);
li->arg = arg;
li->final = final;
li->iface_added = iface_added;
li->iface_removed = iface_removed;
li->node_added = node_added;
li->node_removed = node_removed;
li->host_added = host_added;
li->host_removed = host_removed;
li->mapping_added = mapping_added;
li->mapping_removed = mapping_removed;
li->connection_added = connection_added;
li->connection_removed = connection_removed;
/*
* Add instance into listener list
*/
spin_lock_bh(&ecm_db_lock);
li->flags |= ECM_DB_LISTENER_FLAGS_INSERTED;
li->next = ecm_db_listeners;
ecm_db_listeners = li;
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_listener_add);
/*
* ecm_db_connection_alloc()
* Allocate a connection instance
*/
struct ecm_db_connection_instance *ecm_db_connection_alloc(void)
{
struct ecm_db_connection_instance *ci;
int __attribute__((unused)) i;
/*
* Allocate the connection
*/
ci = (struct ecm_db_connection_instance *)kzalloc(sizeof(struct ecm_db_connection_instance), GFP_ATOMIC | __GFP_NOWARN);
if (!ci) {
DEBUG_WARN("Connection alloc failed\n");
return NULL;
}
/*
* Initialise the defunct timer entry
*/
ecm_db_timer_group_entry_init(&ci->defunct_timer, ecm_db_connection_defunct_callback, ci);
/*
* Refs is 1 for the creator of the connection
*/
ci->refs = 1;
DEBUG_SET_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC);
/*
* Initialise the interfaces from/to lists.
* Interfaces are added from end of array.
*/
ci->from_interface_first = ECM_DB_IFACE_HEIRARCHY_MAX;
ci->to_interface_first = ECM_DB_IFACE_HEIRARCHY_MAX;
ci->from_nat_interface_first = ECM_DB_IFACE_HEIRARCHY_MAX;
ci->to_nat_interface_first = ECM_DB_IFACE_HEIRARCHY_MAX;
#ifdef ECM_MULTICAST_ENABLE
for (i = 0; i < ECM_DB_MULTICAST_IF_MAX; ++i) {
ci->to_mcast_interface_first[i] = ECM_DB_IFACE_HEIRARCHY_MAX;
}
#endif
/*
* If the master thread is terminating then we cannot create new instances
*/
spin_lock_bh(&ecm_db_lock);
if (ecm_db_terminate_pending) {
spin_unlock_bh(&ecm_db_lock);
DEBUG_WARN("Thread terminating\n");
kfree(ci);
return NULL;
}
/*
* Assign runtime unique serial
*/
ci->serial = ecm_db_connection_serial++;
ecm_db_connection_count++;
DEBUG_ASSERT(ecm_db_connection_count > 0, "%p: connection count wrap\n", ci);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Connection created %p\n", ci);
return ci;
}
EXPORT_SYMBOL(ecm_db_connection_alloc);
/*
* ecm_db_mapping_alloc()
* Allocate a mapping instance
*/
struct ecm_db_mapping_instance *ecm_db_mapping_alloc(void)
{
struct ecm_db_mapping_instance *mi;
mi = (struct ecm_db_mapping_instance *)kzalloc(sizeof(struct ecm_db_mapping_instance), GFP_ATOMIC | __GFP_NOWARN);
if (!mi) {
DEBUG_WARN("Alloc failed\n");
return NULL;
}
mi->refs = 1;
DEBUG_SET_MAGIC(mi, ECM_DB_MAPPING_INSTANCE_MAGIC);
/*
* Alloc operation must be atomic to ensure thread and module can be held
*/
spin_lock_bh(&ecm_db_lock);
/*
* If the event processing thread is terminating then we cannot create new instances
*/
if (ecm_db_terminate_pending) {
spin_unlock_bh(&ecm_db_lock);
DEBUG_WARN("Thread terminating\n");
kfree(mi);
return NULL;
}
ecm_db_mapping_count++;
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Mapping created %p\n", mi);
return mi;
}
EXPORT_SYMBOL(ecm_db_mapping_alloc);
/*
* ecm_db_host_alloc()
* Allocate a host instance
*/
struct ecm_db_host_instance *ecm_db_host_alloc(void)
{
struct ecm_db_host_instance *hi;
hi = (struct ecm_db_host_instance *)kzalloc(sizeof(struct ecm_db_host_instance), GFP_ATOMIC | __GFP_NOWARN);
if (!hi) {
DEBUG_WARN("Alloc failed\n");
return NULL;
}
hi->refs = 1;
DEBUG_SET_MAGIC(hi, ECM_DB_HOST_INSTANCE_MAGIC);
/*
* Alloc operation must be atomic to ensure thread and module can be held
*/
spin_lock_bh(&ecm_db_lock);
/*
* If the event processing thread is terminating then we cannot create new instances
*/
if (ecm_db_terminate_pending) {
spin_unlock_bh(&ecm_db_lock);
DEBUG_WARN("Thread terminating\n");
kfree(hi);
return NULL;
}
ecm_db_host_count++;
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Host created %p\n", hi);
return hi;
}
EXPORT_SYMBOL(ecm_db_host_alloc);
/*
* ecm_db_node_alloc()
* Allocate a node instance
*/
struct ecm_db_node_instance *ecm_db_node_alloc(void)
{
struct ecm_db_node_instance *ni;
ni = (struct ecm_db_node_instance *)kzalloc(sizeof(struct ecm_db_node_instance), GFP_ATOMIC | __GFP_NOWARN);
if (!ni) {
DEBUG_WARN("Alloc failed\n");
return NULL;
}
ni->refs = 1;
DEBUG_SET_MAGIC(ni, ECM_DB_NODE_INSTANCE_MAGIC);
/*
* Alloc operation must be atomic to ensure thread and module can be held
*/
spin_lock_bh(&ecm_db_lock);
/*
* If the event processing thread is terminating then we cannot create new instances
*/
if (ecm_db_terminate_pending) {
spin_unlock_bh(&ecm_db_lock);
DEBUG_WARN("Thread terminating\n");
kfree(ni);
return NULL;
}
ecm_db_node_count++;
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Node created %p\n", ni);
return ni;
}
EXPORT_SYMBOL(ecm_db_node_alloc);
/*
* ecm_db_iface_alloc()
* Allocate a iface instance
*/
struct ecm_db_iface_instance *ecm_db_iface_alloc(void)
{
struct ecm_db_iface_instance *ii;
ii = (struct ecm_db_iface_instance *)kzalloc(sizeof(struct ecm_db_iface_instance), GFP_ATOMIC | __GFP_NOWARN);
if (!ii) {
DEBUG_WARN("Alloc failed\n");
return NULL;
}
ii->refs = 1;
DEBUG_SET_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC);
/*
* Alloc operation must be atomic to ensure thread and module can be held
*/
spin_lock_bh(&ecm_db_lock);
/*
* If the event processing thread is terminating then we cannot create new instances
*/
if (ecm_db_terminate_pending) {
spin_unlock_bh(&ecm_db_lock);
DEBUG_WARN("Thread terminating\n");
kfree(ii);
return NULL;
}
ecm_db_iface_count++;
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("iface created %p\n", ii);
return ii;
}
EXPORT_SYMBOL(ecm_db_iface_alloc);
/*
* ecm_db_listener_alloc()
* Allocate a listener instance
*/
struct ecm_db_listener_instance *ecm_db_listener_alloc(void)
{
struct ecm_db_listener_instance *li;
li = (struct ecm_db_listener_instance *)kzalloc(sizeof(struct ecm_db_listener_instance), GFP_ATOMIC | __GFP_NOWARN);
if (!li) {
DEBUG_WARN("Alloc failed\n");
return NULL;
}
li->refs = 1;
DEBUG_SET_MAGIC(li, ECM_DB_LISTENER_INSTANCE_MAGIC);
/*
* Alloc operation must be atomic to ensure thread and module can be held
*/
spin_lock_bh(&ecm_db_lock);
/*
* If the event processing thread is terminating then we cannot create new instances
*/
if (ecm_db_terminate_pending) {
spin_unlock_bh(&ecm_db_lock);
DEBUG_WARN("Thread terminating\n");
kfree(li);
return NULL;
}
ecm_db_listeners_count++;
DEBUG_ASSERT(ecm_db_listeners_count > 0, "%p: listener count wrap\n", li);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Listener created %p\n", li);
return li;
}
EXPORT_SYMBOL(ecm_db_listener_alloc);
#ifdef ECM_MULTICAST_ENABLE
/*
* _ecm_db_multicast_tuple_instance_ref()
* Increment tuple reference count by one
*/
static void _ecm_db_multicast_tuple_instance_ref(struct ecm_db_multicast_tuple_instance *ti)
{
DEBUG_CHECK_MAGIC(ti, ECM_DB_MULTICAST_INSTANCE_MAGIC, "%p: magic failed", ti);
ti->refs++;
DEBUG_TRACE("%p: ti ref %d\n", ti, ti->refs);
DEBUG_ASSERT(ti->refs > 0, "%p: ref wrap\n", ti)
}
/*
* ecm_db_multicast_alloc_connection()
* Allocate memory for the connection structure.
*/
struct ecm_db_multicast_tuple_instance *ecm_db_multicast_tuple_instance_alloc(ip_addr_t origin, ip_addr_t group, uint16_t src_port, uint16_t dst_port)
{
struct ecm_db_multicast_tuple_instance *ti;
ti = (struct ecm_db_multicast_tuple_instance *)kzalloc(sizeof(struct ecm_db_multicast_tuple_instance), GFP_ATOMIC | __GFP_NOWARN);
if (!ti) {
DEBUG_WARN("ti: Alloc failed\n");
return NULL;
}
ti->src_port = src_port;
ti->dst_port = dst_port;
ECM_IP_ADDR_COPY(ti->src_ip, origin);
ECM_IP_ADDR_COPY(ti->grp_ip, group);
ti->proto = IPPROTO_UDP;
ti->hash_index = ecm_db_multicast_generate_hash_index(group);
ti->flags = 0;
ti->refs = 1;
ti->next = NULL;
ti->prev = NULL;
DEBUG_SET_MAGIC(ti, ECM_DB_MULTICAST_INSTANCE_MAGIC);
return ti;
}
EXPORT_SYMBOL(ecm_db_multicast_tuple_instance_alloc);
/*
* ecm_db_multicast_connection_find_and_ref()
* Called by MFC event update to fetch connection from the table
* This function takes a ref count for both tuple_instance and 'ci'
* Call ecm_db_multicast_connection_deref function for deref both
* 'ti' and 'ci'
*/
struct ecm_db_multicast_tuple_instance *ecm_db_multicast_connection_find_and_ref(ip_addr_t origin, ip_addr_t group)
{
ecm_db_multicast_tuple_instance_hash_t hash_index;
struct ecm_db_multicast_tuple_instance *ti;
/*
* Compute the hash chain index
*/
hash_index = ecm_db_multicast_generate_hash_index(group);
spin_lock_bh(&ecm_db_lock);
ti = ecm_db_multicast_tuple_instance_table[hash_index];
/*
* Traverse through the list and find the ti
*/
while (ti) {
if (!(ECM_IP_ADDR_MATCH(ti->src_ip, origin) && ECM_IP_ADDR_MATCH(ti->grp_ip, group))) {
ti = ti->next;
continue;
}
_ecm_db_multicast_tuple_instance_ref(ti);
_ecm_db_connection_ref(ti->ci);
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("multicast tuple instance found %p\n", ti);
return ti;
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("multicast tuple instance not found\n");
return NULL;
}
EXPORT_SYMBOL(ecm_db_multicast_connection_find_and_ref);
/*
* ecm_db_multicast_tuple_instance_deref()
* Deref the reference count or
* Free the tuple_instance struct, when the multicast connection dies
*/
int ecm_db_multicast_tuple_instance_deref(struct ecm_db_multicast_tuple_instance *ti)
{
DEBUG_CHECK_MAGIC(ti, ECM_DB_MULTICAST_INSTANCE_MAGIC, "%p: magic failed", ti);
spin_lock_bh(&ecm_db_lock);
ti->refs--;
DEBUG_TRACE("%p: ti deref %d\n", ti, ti->refs);
DEBUG_ASSERT(ti->refs >= 0, "%p: ref wrap\n", ti);
if (ti->refs > 0) {
int refs = ti->refs;
spin_unlock_bh(&ecm_db_lock);
return refs;
}
if (ti->flags & ECM_DB_MULTICAST_TUPLE_INSTANCE_FLAGS_INSERTED) {
if (!ti->prev) {
DEBUG_ASSERT(ecm_db_multicast_tuple_instance_table[ti->hash_index] == ti, "%p: hash table bad\n", ti);
ecm_db_multicast_tuple_instance_table[ti->hash_index] = ti->next;
} else {
ti->prev->next = ti->next;
}
if (ti->next) {
ti->next->prev = ti->prev;
}
}
spin_unlock_bh(&ecm_db_lock);
DEBUG_CLEAR_MAGIC(ti);
kfree(ti);
return 0;
}
EXPORT_SYMBOL(ecm_db_multicast_tuple_instance_deref);
/*
* ecm_db_multicast_connection_deref()
* Deref both 'ti' and 'ci'
* call this function after ecm_db_multicast_connection_find_and_ref()
*/
void ecm_db_multicast_connection_deref(struct ecm_db_multicast_tuple_instance *ti)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(ti, ECM_DB_MULTICAST_INSTANCE_MAGIC, "%p: magic failed", ti);
ci = ti->ci;
ecm_db_multicast_tuple_instance_deref(ti);
ecm_db_connection_deref(ci);
}
EXPORT_SYMBOL(ecm_db_multicast_connection_deref);
/*
* ecm_db_multicast_tuple_instance_add()
* Add the tuple instance into the hash table. Also, attach the tuple instance
* with connection instance.
*
* Note: This function takes a reference count and caller has to also call
* ecm_db_multicast_tuple_instance_deref() after this function.
*/
void ecm_db_multicast_tuple_instance_add(struct ecm_db_multicast_tuple_instance *ti, struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ti, ECM_DB_MULTICAST_INSTANCE_MAGIC, "%p: magic failed", ti);
spin_lock_bh(&ecm_db_lock);
DEBUG_ASSERT(!(ti->flags & ECM_DB_MULTICAST_TUPLE_INSTANCE_FLAGS_INSERTED), "%p: inserted\n", ti);
/*
* Attach the multicast tuple instance with the connection instance
*/
ci->ti = ti;
ti->ci = ci;
/*
* Take a local reference to ti
*/
_ecm_db_multicast_tuple_instance_ref(ti);
ti->next = ecm_db_multicast_tuple_instance_table[ti->hash_index];
if (ecm_db_multicast_tuple_instance_table[ti->hash_index]) {
ecm_db_multicast_tuple_instance_table[ti->hash_index]->prev = ti;
}
ecm_db_multicast_tuple_instance_table[ti->hash_index] = ti;
ti->flags |= ECM_DB_MULTICAST_TUPLE_INSTANCE_FLAGS_INSERTED;
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_multicast_tuple_instance_add);
/*
* ecm_db_multicast_connection_get_and_ref_first()
* Return the first tuple instance from the table when given a group
* Also take a ref count for 'ci', once done call ecm_db_multicast_connection_deref()
* to deref both 'ti' and 'ci'
*/
struct ecm_db_multicast_tuple_instance *ecm_db_multicast_connection_get_and_ref_first(ip_addr_t group)
{
ecm_db_multicast_tuple_instance_hash_t hash_index;
struct ecm_db_multicast_tuple_instance *ti;
hash_index = ecm_db_multicast_generate_hash_index(group);
spin_lock_bh(&ecm_db_lock);
ti = ecm_db_multicast_tuple_instance_table[hash_index];
if (ti) {
_ecm_db_multicast_tuple_instance_ref(ti);
_ecm_db_connection_ref(ti->ci);
}
spin_unlock_bh(&ecm_db_lock);
return ti;
}
EXPORT_SYMBOL(ecm_db_multicast_connection_get_and_ref_first);
/*
* ecm_db_multicast_connection_get_and_ref_next()
* Return the next tuple instance node and
* take a ref count for 'ci', once done call ecm_db_multicast_connection_deref()
* to deref both 'ti' and 'ci'
*/
struct ecm_db_multicast_tuple_instance *ecm_db_multicast_connection_get_and_ref_next(struct ecm_db_multicast_tuple_instance *ti)
{
struct ecm_db_multicast_tuple_instance *tin;
DEBUG_CHECK_MAGIC(ti, ECM_DB_MULTICAST_INSTANCE_MAGIC, "%p: magic failed", ti);
spin_lock_bh(&ecm_db_lock);
tin = ti->next;
if (tin) {
_ecm_db_multicast_tuple_instance_ref(tin);
_ecm_db_connection_ref(tin->ci);
}
spin_unlock_bh(&ecm_db_lock);
return tin;
}
EXPORT_SYMBOL(ecm_db_multicast_connection_get_and_ref_next);
/*
* ecm_db_multicast_tuple_instance_source_ip_get()
* This function return the source IP for a connection object
*/
void ecm_db_multicast_tuple_instance_source_ip_get(struct ecm_db_multicast_tuple_instance *ti, ip_addr_t origin)
{
DEBUG_CHECK_MAGIC(ti, ECM_DB_MULTICAST_INSTANCE_MAGIC, "%p: magic failed", ti);
ECM_IP_ADDR_COPY(origin, ti->src_ip);
}
EXPORT_SYMBOL(ecm_db_multicast_tuple_instance_source_ip_get);
/*
* ecm_db_multicast_tuple_instance_group_ip_get()
* This function return the group IP for a connection object
*/
void ecm_db_multicast_tuple_instance_group_ip_get(struct ecm_db_multicast_tuple_instance *ti, ip_addr_t group)
{
DEBUG_CHECK_MAGIC(ti, ECM_DB_MULTICAST_INSTANCE_MAGIC, "%p: magic failed", ti);
ECM_IP_ADDR_COPY(group, ti->grp_ip);
}
EXPORT_SYMBOL(ecm_db_multicast_tuple_instance_group_ip_get);
/*
* ecm_db_multicast_tuple_instance_flags_get()
* Return flags related to Multicast connection
*/
uint32_t ecm_db_multicast_tuple_instance_flags_get(struct ecm_db_multicast_tuple_instance *ti)
{
uint32_t flags;
DEBUG_CHECK_MAGIC(ti, ECM_DB_MULTICAST_INSTANCE_MAGIC, "%p: magic failed\n", ti);
spin_lock_bh(&ecm_db_lock);
flags = ti->flags;
spin_unlock_bh(&ecm_db_lock);
return flags;
}
EXPORT_SYMBOL(ecm_db_multicast_tuple_instance_flags_get);
/*
* ecm_db_multicast_tuple_instance_flags_set()
* Set the multicast connection flags
*/
void ecm_db_multicast_tuple_instance_flags_set(struct ecm_db_multicast_tuple_instance *ti, uint32_t flags)
{
DEBUG_CHECK_MAGIC(ti, ECM_DB_MULTICAST_INSTANCE_MAGIC, "%p: magic failed\n", ti);
spin_lock_bh(&ecm_db_lock);
ti->flags |= flags;
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_multicast_tuple_instance_flags_set);
/*
* ecm_db_multicast_tuple_instance_flags_clear()
* Clear the multicast connection flags
*/
void ecm_db_multicast_tuple_instance_flags_clear(struct ecm_db_multicast_tuple_instance *ti, uint32_t flags)
{
DEBUG_CHECK_MAGIC(ti, ECM_DB_MULTICAST_INSTANCE_MAGIC, "%p: magic failed\n", ti);
spin_lock_bh(&ecm_db_lock);
ti->flags &= ~flags;
spin_unlock_bh(&ecm_db_lock);
}
EXPORT_SYMBOL(ecm_db_multicast_tuple_instance_flags_clear);
/*
* ecm_db_multicast_connection_to_interfaces_get_and_ref_all()
* Return the list of multicast destination interface heirarchies to which this connection is established.
* The function returns the heirarchies using the 'interface' pointer passed to it. It also returns the first
* index in the interface heirarchy for each of the heirarchies using the 'ifaces_first' pointer.
*
* NOTE: This function allocates the memory for the destination interface heirachy. This memory is expected to be
* freed only by making a call to ecm_db_multicast_connection_interfaces_deref_all().
*
* The size of the buffer allocated for the heirarchies and pointed to by 'interfaces' is as large as
* sizeof(struct ecm_db_iface_instance *) * ECM_DB_MULTICAST_IF_MAX * ECM_DB_IFACE_HEIRARCHY_MAX.
* Returns the number of interface heirarchies in the list as a return value.
*
* Each interface is referenced on return, be sure to release them using ecm_db_multicast_connection_interfaces_deref_all().
*/
int32_t ecm_db_multicast_connection_to_interfaces_get_and_ref_all(struct ecm_db_connection_instance *ci,
struct ecm_db_iface_instance **interfaces, int32_t **ifaces_first)
{
struct ecm_db_iface_instance *heirarchy_base;
struct ecm_db_iface_instance *heirarchy_temp;
struct ecm_db_iface_instance *ii_single;
struct ecm_db_iface_instance **ifaces;
struct ecm_db_iface_instance *ii_db;
struct ecm_db_iface_instance *ii_db_single;
struct ecm_db_iface_instance **ifaces_db;
int32_t *ii_first_base;
int32_t *ii_first;
int32_t heirarchy_index;
int32_t ii_index;
int32_t if_count = 0;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
heirarchy_base = (struct ecm_db_iface_instance *)kzalloc(ECM_DB_TO_MCAST_INTERFACES_SIZE, GFP_ATOMIC | __GFP_NOWARN);
if (!heirarchy_base) {
DEBUG_WARN("%p: No memory for interface hierarchies \n", ci);
return if_count;
}
ii_first_base = (int32_t *)kzalloc(sizeof(int32_t *) * ECM_DB_MULTICAST_IF_MAX, GFP_ATOMIC | __GFP_NOWARN);
if (!ii_first_base) {
DEBUG_WARN("%p: No memory for first interface \n", ci);
kfree(heirarchy_base);
return if_count;
}
spin_lock_bh(&ecm_db_lock);
if (!ci->to_mcast_interfaces_set) {
spin_unlock_bh(&ecm_db_lock);
kfree(ii_first_base);
kfree(heirarchy_base);
return if_count;
}
for (heirarchy_index = 0; heirarchy_index < ECM_DB_MULTICAST_IF_MAX; heirarchy_index++) {
heirarchy_temp = ecm_db_multicast_if_heirarchy_get(heirarchy_base, heirarchy_index);
if (ci->to_mcast_interface_first[heirarchy_index] < ECM_DB_IFACE_HEIRARCHY_MAX) {
if_count++;
}
for (ii_index = ci->to_mcast_interface_first[heirarchy_index]; ii_index < ECM_DB_IFACE_HEIRARCHY_MAX; ++ii_index) {
ii_db = ecm_db_multicast_if_heirarchy_get(ci->to_mcast_interfaces, heirarchy_index);
ii_db_single = ecm_db_multicast_if_instance_get_at_index(ii_db, ii_index);
ifaces_db = (struct ecm_db_iface_instance **)ii_db_single;
/*
* Take a reference count
*/
_ecm_db_iface_ref(*ifaces_db);
ii_single = ecm_db_multicast_if_instance_get_at_index(heirarchy_temp, ii_index);
ifaces = (struct ecm_db_iface_instance **)ii_single;
*ifaces = *ifaces_db;
}
ii_first = ecm_db_multicast_if_first_get_at_index(ii_first_base, heirarchy_index);
*ii_first = ci->to_mcast_interface_first[heirarchy_index];
}
*interfaces = heirarchy_base;
*ifaces_first = ii_first_base;
spin_unlock_bh(&ecm_db_lock);
return if_count;
}
EXPORT_SYMBOL(ecm_db_multicast_connection_to_interfaces_get_and_ref_all);
/*
* ecm_db_multicast_connection_to_interfaces_set_check()
* Returns true if the multicast destination interfaces list has been set.
*/
bool ecm_db_multicast_connection_to_interfaces_set_check(struct ecm_db_connection_instance *ci)
{
bool set;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
set = ci->to_mcast_interfaces_set;
spin_unlock_bh(&ecm_db_lock);
return set;
}
EXPORT_SYMBOL(ecm_db_multicast_connection_to_interfaces_set_check);
/*
* ecm_db_multicast_connection_to_interfaces_set_clear()
* Clear the to_mcast_interfaces_set flag if the multicast destination interfaces list has been freed.
*/
static void _ecm_db_multicast_connection_to_interfaces_set_clear(struct ecm_db_connection_instance *ci)
{
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
ci->to_mcast_interfaces_set = false;
}
/*
* ecm_db_multicast_connection_get_from_tuple()
* Return the connection instance
*/
struct ecm_db_connection_instance *ecm_db_multicast_connection_get_from_tuple(struct ecm_db_multicast_tuple_instance *ti)
{
DEBUG_CHECK_MAGIC(ti, ECM_DB_MULTICAST_INSTANCE_MAGIC, "%p: magic failed", ti);
DEBUG_ASSERT(ti->ci, "%p: Bad multicast connection instance \n", ti);
return ti->ci;
}
EXPORT_SYMBOL(ecm_db_multicast_connection_get_from_tuple);
/*
* ecm_db_multicast_connection_to_interfaces_deref_all()
* Deref all destination multicast interface heirarchies at once
*/
void ecm_db_multicast_connection_to_interfaces_deref_all(struct ecm_db_iface_instance *interfaces, int32_t *ifaces_first)
{
struct ecm_db_iface_instance *ifaces_single;
struct ecm_db_iface_instance *ii_temp[ECM_DB_IFACE_HEIRARCHY_MAX];
int32_t *to_first;
int heirarchy_index;
DEBUG_ASSERT(interfaces, "Bad memory, multicast interfaces list has been already freed\n");
DEBUG_ASSERT(ifaces_first, "Bad memory, multicast interfaces first has been already freed\n");
for (heirarchy_index = 0; heirarchy_index < ECM_DB_MULTICAST_IF_MAX; heirarchy_index++) {
to_first = ecm_db_multicast_if_first_get_at_index(ifaces_first, heirarchy_index);
if (*to_first < ECM_DB_IFACE_HEIRARCHY_MAX) {
ifaces_single = ecm_db_multicast_if_heirarchy_get(interfaces, heirarchy_index);
ecm_db_multicast_copy_if_heirarchy(ii_temp, ifaces_single);
ecm_db_connection_interfaces_deref(ii_temp, *to_first);
}
}
/*
* Free the temporary memory allocated by ecm_db_multicast_connection_to_interfaces_get_and_ref_all()
*/
kfree(interfaces);
kfree(ifaces_first);
}
EXPORT_SYMBOL(ecm_db_multicast_connection_to_interfaces_deref_all);
/*
* _ecm_db_multicast_connection_to_interface_first_is_valid()
* Check if destnation interfaces first list uphold a valid interface
* first or all entries have discarded.
*/
static bool _ecm_db_multicast_connection_to_interface_first_is_valid(int32_t ifaces_first[])
{
int heirarchy_index;
for (heirarchy_index = 0; heirarchy_index < ECM_DB_MULTICAST_IF_MAX; heirarchy_index++) {
if (ifaces_first[heirarchy_index] < ECM_DB_IFACE_HEIRARCHY_MAX) {
return true;
}
}
return false;
}
/*
* ecm_db_multicast_connection_to_interfaces_clear_at_index()
* Dereference and clear a interface heirarchy at 'index' position
*/
void ecm_db_multicast_connection_to_interfaces_clear_at_index(struct ecm_db_connection_instance *ci, uint32_t index)
{
struct ecm_db_iface_instance *discard[ECM_DB_IFACE_HEIRARCHY_MAX];
struct ecm_db_iface_instance *ifaces_db_single;
int32_t discard_first;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
/*
* Invalid Index Value
*/
DEBUG_ASSERT((index < ECM_DB_MULTICAST_IF_MAX), "%p: Invalid index for multicast interface heirarchies list %u\n", ci, index);
spin_lock_bh(&ecm_db_lock);
if (ci->to_mcast_interface_first[index] == ECM_DB_IFACE_HEIRARCHY_MAX) {
spin_unlock_bh(&ecm_db_lock);
return;
}
ifaces_db_single = ecm_db_multicast_if_heirarchy_get(ci->to_mcast_interfaces, index);
ecm_db_multicast_copy_if_heirarchy(discard, ifaces_db_single);
discard_first = ci->to_mcast_interface_first[index];
ci->to_mcast_interface_first[index] = ECM_DB_IFACE_HEIRARCHY_MAX;
/*
* If this is the only valid interface hierarchy left in the list of destination
* interface hierarchies then clear the ci->to_mcast_interfaces_set flag here before
* deleting this.
*/
if (!_ecm_db_multicast_connection_to_interface_first_is_valid(ci->to_mcast_interface_first)) {
ci->to_mcast_interfaces_set = false;
}
spin_unlock_bh(&ecm_db_lock);
ecm_db_connection_interfaces_deref(discard, discard_first);
}
EXPORT_SYMBOL(ecm_db_multicast_connection_to_interfaces_clear_at_index);
/*
* ecm_db_multicast_connection_to_interfaces_clear()
* Deref and clear all destination multicast interface heirarchies
*/
void ecm_db_multicast_connection_to_interfaces_clear(struct ecm_db_connection_instance *ci)
{
int heirarchy_index;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed\n", ci);
spin_lock_bh(&ecm_db_lock);
if (!ci->to_mcast_interfaces) {
spin_unlock_bh(&ecm_db_lock);
return;
}
_ecm_db_multicast_connection_to_interfaces_set_clear(ci);
spin_unlock_bh(&ecm_db_lock);
for (heirarchy_index = 0; heirarchy_index < ECM_DB_MULTICAST_IF_MAX; heirarchy_index++) {
ecm_db_multicast_connection_to_interfaces_clear_at_index(ci, heirarchy_index);
}
kfree(ci->to_mcast_interfaces);
ci->to_mcast_interfaces = NULL;
}
EXPORT_SYMBOL(ecm_db_multicast_connection_to_interfaces_clear);
#endif
/*
* ecm_db_time_get()
* Return database time, in seconds since the database started.
*/
uint32_t ecm_db_time_get(void)
{
uint32_t time_now;
spin_lock_bh(&ecm_db_lock);
time_now = ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
return time_now;
}
EXPORT_SYMBOL(ecm_db_time_get);
/*
* ecm_db_get_defunct_all()
* Reading this file returns the accumulated total of all objects
*/
static ssize_t ecm_db_get_defunct_all(struct file *file,
char __user *user_buf,
size_t sz, loff_t *ppos)
{
int ret;
int num;
char *buf;
buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
if (!buf) {
return -ENOMEM;
}
/*
* Operate under our locks
*/
spin_lock_bh(&ecm_db_lock);
num = ecm_db_connection_count + ecm_db_mapping_count + ecm_db_host_count
+ ecm_db_node_count + ecm_db_iface_count;
spin_unlock_bh(&ecm_db_lock);
ret = snprintf(buf, (ssize_t)PAGE_SIZE, "%d\n", num);
if (ret < 0) {
kfree(buf);
return ret;
}
ret = simple_read_from_buffer(user_buf, sz, ppos, buf, ret);
kfree(buf);
return ret;
}
/*
* ecm_db_set_defunct_all()
*/
static ssize_t ecm_db_set_defunct_all(struct file *file,
const char __user *user_buf,
size_t sz, loff_t *ppos)
{
ecm_db_connection_defunct_all();
return sz;
}
/*
* File operations for defunct_all.
*/
static struct file_operations ecm_db_defunct_all_fops = {
.read = ecm_db_get_defunct_all,
.write = ecm_db_set_defunct_all,
};
/*
* ecm_db_get_connection_counts_simple()
* Return total of connections for each simple protocol (tcp, udp, other). Primarily for use by the luci-bwc service.
*/
static ssize_t ecm_db_get_connection_counts_simple(struct file *file,
char __user *user_buf,
size_t sz, loff_t *ppos)
{
int tcp_count;
int udp_count;
int other_count;
int total_count;
int ret;
char *buf;
buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
if (!buf) {
return -ENOMEM;
}
/*
* Get snapshot of the protocol counts
*/
spin_lock_bh(&ecm_db_lock);
tcp_count = ecm_db_connection_count_by_protocol[IPPROTO_TCP];
udp_count = ecm_db_connection_count_by_protocol[IPPROTO_UDP];
total_count = ecm_db_connection_count;
other_count = total_count - (tcp_count + udp_count);
spin_unlock_bh(&ecm_db_lock);
ret = snprintf(buf, (ssize_t)PAGE_SIZE, "tcp %d udp %d other %d total %d\n", tcp_count, udp_count, other_count, total_count);
if (ret < 0) {
kfree(buf);
return -EFAULT;
}
ret = simple_read_from_buffer(user_buf, sz, ppos, buf, ret);
kfree(buf);
return ret;
}
/*
* File operations for simple connection counts.
*/
static struct file_operations ecm_db_connection_count_simple_fops = {
.read = ecm_db_get_connection_counts_simple,
};
/*
* ecm_db_timer_callback()
* Manage expiration of connections
* NOTE: This is softirq context
*/
static void ecm_db_timer_callback(unsigned long data)
{
uint32_t timer;
/*
* Increment timer.
*/
spin_lock_bh(&ecm_db_lock);
timer = ++ecm_db_time;
spin_unlock_bh(&ecm_db_lock);
DEBUG_TRACE("Garbage timer tick %d\n", timer);
/*
* Check timer groups
*/
ecm_db_timer_groups_check(timer);
/*
* Set the timer for the next second
*/
ecm_db_timer.expires += HZ;
if (ecm_db_timer.expires <= jiffies) {
DEBUG_WARN("losing time %lu, jiffies = %lu\n", ecm_db_timer.expires, jiffies);
ecm_db_timer.expires = jiffies + HZ;
}
add_timer(&ecm_db_timer);
}
#ifdef ECM_DB_XREF_ENABLE
/*
* ecm_db_node_from_connections_get_and_ref_first()
* Obtain a ref to the first connection instance of "from list" of node, if any
*/
static inline struct ecm_db_connection_instance *ecm_db_node_from_connections_get_and_ref_first(struct ecm_db_node_instance *node)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(node, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed", node);
spin_lock_bh(&ecm_db_lock);
ci = node->from_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
/*
* ecm_db_node_from_connection_get_and_ref_next()
* Return the next connection in the "from list" of given a connection
*/
static inline struct ecm_db_connection_instance *ecm_db_node_from_connection_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *cin;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
cin = ci->node_from_next;
if (cin) {
_ecm_db_connection_ref(cin);
}
spin_unlock_bh(&ecm_db_lock);
return cin;
}
/*
* ecm_db_node_to_connections_get_and_ref_first()
* Obtain a ref to the first connection instance of a "to list" of node, if any
*/
static inline struct ecm_db_connection_instance *ecm_db_node_to_connections_get_and_ref_first(struct ecm_db_node_instance *node)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(node, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed", node);
spin_lock_bh(&ecm_db_lock);
ci = node->to_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
/*
* ecm_db_node_to_connection_get_and_ref_next()
* Return the next connection in the "to list" of given a connection
*/
static inline struct ecm_db_connection_instance *ecm_db_node_to_connection_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *cin;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
cin = ci->node_to_next;
if (cin) {
_ecm_db_connection_ref(cin);
}
spin_unlock_bh(&ecm_db_lock);
return cin;
}
/*
* ecm_db_node_from_nat_connections_get_and_ref_first()
* Obtain a ref to the first connection instance of a "from_nat list" of node, if any
*/
static inline struct ecm_db_connection_instance *ecm_db_node_from_nat_connections_get_and_ref_first(struct ecm_db_node_instance *node)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(node, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed", node);
spin_lock_bh(&ecm_db_lock);
ci = node->from_nat_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
/*
* ecm_db_node_from_nat_connection_get_and_ref_next()
* Return the next connection in the "from nat list" of given a connection
*/
static inline struct ecm_db_connection_instance *ecm_db_node_from_nat_connection_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *cin;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
cin = ci->node_from_nat_next;
if (cin) {
_ecm_db_connection_ref(cin);
}
spin_unlock_bh(&ecm_db_lock);
return cin;
}
/*
* ecm_db_node_to_nat_connections_get_and_ref_first()
* Obtain a ref to the first connection instance of a "to_nat list" of node, if any
*/
static inline struct ecm_db_connection_instance *ecm_db_node_to_nat_connections_get_and_ref_first(struct ecm_db_node_instance *node)
{
struct ecm_db_connection_instance *ci;
DEBUG_CHECK_MAGIC(node, ECM_DB_NODE_INSTANCE_MAGIC, "%p: magic failed", node);
spin_lock_bh(&ecm_db_lock);
ci = node->to_nat_connections;
if (ci) {
_ecm_db_connection_ref(ci);
}
spin_unlock_bh(&ecm_db_lock);
return ci;
}
/*
* ecm_db_node_to_nat_connection_get_and_ref_next()
* Return the next connection in the "to nat list" of given a connection
*/
static inline struct ecm_db_connection_instance *ecm_db_node_to_nat_connection_get_and_ref_next(struct ecm_db_connection_instance *ci)
{
struct ecm_db_connection_instance *cin;
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
spin_lock_bh(&ecm_db_lock);
cin = ci->node_to_nat_next;
if (cin) {
_ecm_db_connection_ref(cin);
}
spin_unlock_bh(&ecm_db_lock);
return cin;
}
/*
* ecm_db_connection_decelerate_and_defunct()
* decelerate and defunct a connection
*/
static inline void ecm_db_connection_decelerate_and_defunct(struct ecm_db_connection_instance *ci)
{
struct ecm_front_end_connection_instance *feci = NULL;
if(unlikely(!ci)) {
DEBUG_WARN("%p: ecm db connection instance pointer is null\n", ci);
return;
}
DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci);
feci = ecm_db_connection_front_end_get_and_ref(ci);
feci->decelerate(feci);
feci->deref(feci);
ecm_db_connection_make_defunct(ci);
}
/*
* ecm_db_traverse_node_from_connection_list_and_decelerate()
* traverse from_list of a node and calls ecm_db_connection_decelerate_and_defunct()
* for each entry
*/
void ecm_db_traverse_node_from_connection_list_and_decelerate(struct ecm_db_node_instance *node)
{
struct ecm_db_connection_instance *ci = NULL;
/*
* Iterate all from connections
*/
ci = ecm_db_node_from_connections_get_and_ref_first(node);
while (ci) {
struct ecm_db_connection_instance *cin;
DEBUG_TRACE("%p: defunct\n", ci);
ecm_db_connection_decelerate_and_defunct(ci);
cin = ecm_db_node_from_connection_get_and_ref_next(ci);
ecm_db_connection_deref(ci);
ci = cin;
}
DEBUG_INFO("%p: Defuncting node's from connection list complete\n", node);
}
/*
* ecm_db_traverse_node_to_connection_list_and_decelerate()
* traverse to_list of a node and calls ecm_db_connection_decelerate_and_defunct()
* for each entry
*/
void ecm_db_traverse_node_to_connection_list_and_decelerate(struct ecm_db_node_instance *node)
{
struct ecm_db_connection_instance *ci = NULL;
/*
* Iterate all to connections
*/
ci = ecm_db_node_to_connections_get_and_ref_first(node);
while (ci) {
struct ecm_db_connection_instance *cin;
DEBUG_TRACE("%p: defunct\n", ci);
ecm_db_connection_decelerate_and_defunct(ci);
cin = ecm_db_node_to_connection_get_and_ref_next(ci);
ecm_db_connection_deref(ci);
ci = cin;
}
DEBUG_INFO("%p: Defuncting node's to connection list complete\n", node);
}
/*
* ecm_db_traverse_node_from_nat_connection_list_and_decelerate()
* traverse from_nat_list of a node and calls ecm_db_connection_decelerate_and_defunct()
* for each entry
*/
void ecm_db_traverse_node_from_nat_connection_list_and_decelerate(struct ecm_db_node_instance *node)
{
struct ecm_db_connection_instance *ci = NULL;
/*
* Iterate all from nat connections
*/
ci = ecm_db_node_from_nat_connections_get_and_ref_first(node);
while (ci) {
struct ecm_db_connection_instance *cin;
DEBUG_TRACE("%p: defunct\n", ci);
ecm_db_connection_decelerate_and_defunct(ci);
cin = ecm_db_node_from_nat_connection_get_and_ref_next(ci);
ecm_db_connection_deref(ci);
ci = cin;
}
DEBUG_INFO("%p: Defuncting node's from nat connection list complete\n", node);
}
/*
* ecm_db_traverse_node_to_nat_connection_list_and_decelerate()
* traverse to_nat_list of a node and calls ecm_db_connection_decelerate_and_defunct()
* for each entry
*/
void ecm_db_traverse_node_to_nat_connection_list_and_decelerate(struct ecm_db_node_instance *node)
{
struct ecm_db_connection_instance *ci = NULL;
/*
* Iterate all to nat connections
*/
ci = ecm_db_node_to_nat_connections_get_and_ref_first(node);
while (ci) {
struct ecm_db_connection_instance *cin;
DEBUG_TRACE("%p: defunct\n", ci);
ecm_db_connection_decelerate_and_defunct(ci);
cin = ecm_db_node_to_nat_connection_get_and_ref_next(ci);
ecm_db_connection_deref(ci);
ci = cin;
}
DEBUG_INFO("%p: Defuncting to node's nat connection list complete\n", node);
}
#endif
/*
* ecm_db_init()
*/
int ecm_db_init(struct dentry *dentry)
{
DEBUG_INFO("ECM Module init\n");
ecm_db_dentry = debugfs_create_dir("ecm_db", dentry);
if (!ecm_db_dentry) {
DEBUG_ERROR("Failed to create ecm db directory in debugfs\n");
return -1;
}
/*
* Get a random seed for jhash()
*/
get_random_bytes(&ecm_db_jhash_rnd, sizeof(ecm_db_jhash_rnd));
DEBUG_INFO("jhash random seed: %u\n", ecm_db_jhash_rnd);
if (!debugfs_create_u32("connection_count", S_IRUGO, ecm_db_dentry,
(u32 *)&ecm_db_connection_count)) {
DEBUG_ERROR("Failed to create ecm db connection count file in debugfs\n");
goto init_cleanup;
}
if (!debugfs_create_u32("host_count", S_IRUGO, ecm_db_dentry,
(u32 *)&ecm_db_host_count)) {
DEBUG_ERROR("Failed to create ecm db host count file in debugfs\n");
goto init_cleanup;
}
if (!debugfs_create_u32("mapping_count", S_IRUGO, ecm_db_dentry,
(u32 *)&ecm_db_mapping_count)) {
DEBUG_ERROR("Failed to create ecm db mapping count file in debugfs\n");
goto init_cleanup;
}
if (!debugfs_create_u32("node_count", S_IRUGO, ecm_db_dentry,
(u32 *)&ecm_db_node_count)) {
DEBUG_ERROR("Failed to create ecm db node count file in debugfs\n");
goto init_cleanup;
}
if (!debugfs_create_u32("iface_count", S_IRUGO, ecm_db_dentry,
(u32 *)&ecm_db_iface_count)) {
DEBUG_ERROR("Failed to create ecm db iface count file in debugfs\n");
goto init_cleanup;
}
if (!debugfs_create_file("defunct_all", S_IRUGO | S_IWUSR, ecm_db_dentry,
NULL, &ecm_db_defunct_all_fops)) {
DEBUG_ERROR("Failed to create ecm db defunct_all file in debugfs\n");
goto init_cleanup;
}
if (!debugfs_create_file("connection_count_simple", S_IRUGO, ecm_db_dentry,
NULL, &ecm_db_connection_count_simple_fops)) {
DEBUG_ERROR("Failed to create ecm db connection count simple file in debugfs\n");
goto init_cleanup;
}
/*
* Set a timer to manage cleanup of expired connections
*/
init_timer(&ecm_db_timer);
ecm_db_timer.function = ecm_db_timer_callback;
ecm_db_timer.data = 0;
ecm_db_timer.expires = jiffies + HZ;
add_timer(&ecm_db_timer);
/*
* Initialise timer groups with time values
*/
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CLASSIFIER_DETERMINE_GENERIC_TIMEOUT].time = ECM_DB_CLASSIFIER_DETERMINE_GENERIC_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CLASSIFIER_DETERMINE_GENERIC_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CLASSIFIER_DETERMINE_GENERIC_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_GENERIC_TIMEOUT].time = ECM_DB_CONNECTION_GENERIC_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_GENERIC_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_GENERIC_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_IGMP_TIMEOUT].time = ECM_DB_CONNECTION_IGMP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_IGMP_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_IGMP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_UDP_GENERIC_TIMEOUT].time = ECM_DB_CONNECTION_UDP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_UDP_GENERIC_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_UDP_GENERIC_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_UDP_WKP_TIMEOUT].time = ECM_DB_CONNECTION_UDP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_UDP_WKP_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_UDP_WKP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_ICMP_TIMEOUT].time = ECM_DB_CONNECTION_ICMP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_ICMP_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_ICMP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_TCP_SHORT_TIMEOUT].time = ECM_DB_CONNECTION_TCP_SHORT_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_TCP_SHORT_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_TCP_SHORT_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_TCP_RESET_TIMEOUT].time = ECM_DB_CONNECTION_TCP_RST_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_TCP_RESET_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_TCP_RESET_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_TCP_LONG_TIMEOUT].time = ECM_DB_CONNECTION_TCP_LONG_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_TCP_LONG_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_TCP_LONG_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_PPTP_DATA_TIMEOUT].time = ECM_DB_CONNECTION_PPTP_DATA_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_PPTP_DATA_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_PPTP_DATA_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_RTCP_TIMEOUT].time = ECM_DB_CONNECTION_RTCP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_RTCP_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_RTCP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_RTSP_TIMEOUT].time = ECM_DB_CONNECTION_TCP_LONG_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_RTSP_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_RTSP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_RTSP_FAST_TIMEOUT].time = ECM_DB_CONNECTION_RTSP_FAST_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_RTSP_FAST_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_RTSP_FAST_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_RTSP_SLOW_TIMEOUT].time = ECM_DB_CONNECTION_RTSP_SLOW_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_RTSP_SLOW_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_RTSP_SLOW_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_DNS_TIMEOUT].time = ECM_DB_CONNECTION_DNS_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_DNS_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_DNS_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_FTP_TIMEOUT].time = ECM_DB_CONNECTION_FTP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_FTP_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_FTP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_BITTORRENT_TIMEOUT].time = ECM_DB_CONNECTION_BITTORRENT_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_BITTORRENT_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_BITTORRENT_TIMEOUT;
/*
* H323 timeout value is 8 hours (8h * 60m * 60s == 28800 seconds).
*/
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_H323_TIMEOUT].time = ECM_DB_CONNECTION_H323_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_H323_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_H323_TIMEOUT;
/*
* IKE Timeout (seconds) = 15 hours
*/
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_IKE_TIMEOUT].time = ECM_DB_CONNECTION_IKE_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_IKE_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_IKE_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_ESP_TIMEOUT].time = ECM_DB_CONNECTION_ESP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_ESP_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_ESP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_ESP_PENDING_TIMEOUT].time = ECM_DB_CONNECTION_ESP_PENDING_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_ESP_PENDING_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_ESP_PENDING_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_SDP_TIMEOUT].time = ECM_DB_CONNECTION_SDP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_SDP_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_SDP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_SIP_TIMEOUT].time = ECM_DB_CONNECTION_SIP_TIMEOUT;
ecm_db_timer_groups[ECM_DB_TIMER_GROUPS_CONNECTION_SIP_TIMEOUT].tg = ECM_DB_TIMER_GROUPS_CONNECTION_SIP_TIMEOUT;
/*
* Reset connection by protocol counters
*/
memset(ecm_db_connection_count_by_protocol, 0, sizeof(ecm_db_connection_count_by_protocol));
#ifdef ECM_DB_CTA_TRACK_ENABLE
/*
* Reset classifier type assignment lists
*/
memset(ecm_db_connection_classifier_type_assignments, 0, sizeof(ecm_db_connection_classifier_type_assignments));
#endif
return 0;
init_cleanup:
debugfs_remove_recursive(ecm_db_dentry);
return -1;
}
EXPORT_SYMBOL(ecm_db_init);
/*
* ecm_db_exit()
*/
void ecm_db_exit(void)
{
DEBUG_INFO("ECM DB Module exit\n");
spin_lock_bh(&ecm_db_lock);
ecm_db_terminate_pending = true;
spin_unlock_bh(&ecm_db_lock);
ecm_db_connection_defunct_all();
/*
* Destroy garbage timer
* Timer must be cancelled outside of holding db lock - if the
* timer callback runs on another CPU we would deadlock
* as we would wait for the callback to finish and it would wait
* indefinately for the lock to be released!
*/
del_timer_sync(&ecm_db_timer);
/*
* Remove the debugfs files recursively.
*/
if (ecm_db_dentry) {
debugfs_remove_recursive(ecm_db_dentry);
}
}
EXPORT_SYMBOL(ecm_db_exit);