| /* |
| ************************************************************************** |
| * Copyright (c) 2014, 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/types.h> |
| #include <linux/ip.h> |
| #include <linux/tcp.h> |
| #include <linux/module.h> |
| #include <linux/skbuff.h> |
| #include <linux/icmp.h> |
| #include <linux/sysctl.h> |
| #include <linux/kthread.h> |
| #include <linux/device.h> |
| #include <linux/fs.h> |
| #include <linux/pkt_sched.h> |
| #include <linux/string.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 <nss_api_if.h> |
| |
| #include "ecm_types.h" |
| #include "ecm_db_types.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 |
| #define ECM_DB_STATE_FILE_INSTANCE_MAGIC 0xB3FE |
| #define ECM_DB_CLASSIFIER_TYPE_ASSIGNMENT_MAGIC 0xAEF4 |
| |
| /* |
| * 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. |
| * In the XML state files a key can be set up on serial for fast association between |
| * state data. |
| * 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; |
| |
| /* |
| * Listeners |
| */ |
| static int ecm_db_listeners_count = 0; /* Number of listeners allocated */ |
| static struct ecm_db_listener_instance *ecm_db_listeners = NULL; |
| /* Event listeners */ |
| |
| /* |
| * ecm_db_iface_xml_state_get_method_t |
| * Used to obtain interface XML state |
| */ |
| typedef int (*ecm_db_iface_xml_state_get_method_t)(struct ecm_db_iface_instance *ii, char *buf, int buf_sz); |
| |
| /* |
| * 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 */ |
| struct ecm_db_node_instance *nodes; /* Nodes associated with this Interface */ |
| int node_count; /* Number of Nodes in the nodes list */ |
| 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 nss_interface_identifier; /* RO: The NSS identifier of this interface */ |
| char name[IFNAMSIZ]; /* Name of interface */ |
| int32_t mtu; /* Interface MTU */ |
| |
| 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; |
| |
| /* |
| * 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 NSS 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 */ |
| |
| /* |
| * Interface specific information. |
| * type identifies which information is applicable. |
| */ |
| union { |
| struct ecm_db_interface_info_ethernet ethernet; /* type == ECM_DB_IFACE_TYPE_ETHERNET */ |
| struct ecm_db_interface_info_vlan vlan; /* type == ECM_DB_IFACE_TYPE_VLAN */ |
| struct ecm_db_interface_info_lag lag; /* type == ECM_DB_IFACE_TYPE_LAG */ |
| struct ecm_db_interface_info_bridge bridge; /* type == ECM_DB_IFACE_TYPE_BRIDGE */ |
| struct ecm_db_interface_info_pppoe pppoe; /* type == ECM_DB_IFACE_TYPE_PPPOE */ |
| 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 */ |
| struct ecm_db_interface_info_ipsec_tunnel ipsec_tunnel; /* type == ECM_DB_IFACE_TYPE_IPSEC_TUNNEL */ |
| struct ecm_db_interface_info_sit sit; /* type == ECM_DB_IFACE_TYPE_SIT (6-in-4) */ |
| struct ecm_db_interface_info_tunipip6 tunipip6; /* type == ECM_DB_IFACE_TYPE_TUNIPIP6 (IPIP v6 Tunnel i.e. TUNNEL6) */ |
| } type_info; |
| |
| ecm_db_iface_xml_state_get_method_t xml_state_get; /* Type specific state method to return XML state for it */ |
| |
| 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 */ |
| |
| /* |
| * 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 NSS 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 */ |
| |
| uint32_t time_added; /* RO: DB time stamp when the node was added into the database */ |
| |
| 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; |
| |
| struct ecm_db_iface_instance *iface; /* The interface to which this node relates */ |
| 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 */ |
| |
| 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 */ |
| struct ecm_db_mapping_instance *mappings; /* Mappings made on this host */ |
| int mapping_count; /* Number of mappings in the mapping list */ |
| uint32_t time_added; /* RO: DB time stamp when the host was added into the database */ |
| |
| 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; |
| |
| 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 */ |
| 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 */ |
| |
| 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 */ |
| |
| /* |
| * 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; |
| |
| /* |
| * Total counts |
| */ |
| int from; |
| int to; |
| int nat_from; |
| int nat_to; |
| |
| /* |
| * 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; |
| |
| 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 */ |
| |
| /* |
| * Classifier assignments |
| * |
| * Each connection has a list of classifier instances that are assigned to it. Only one instance of each type may be assigned to a connection at any time. |
| * These structures store, in a list, all connections that are assigned to a TYPE of classifier. |
| * This allows iterating of all connections that are currently assigned to a classifier TYPE. |
| */ |
| 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 { |
| 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 */ |
| |
| /* |
| * 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 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 */ |
| 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 */ |
| |
| /* |
| * 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 */ |
| 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. |
| */ |
| 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. |
| */ |
| 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 */ |
| |
| /* |
| * 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. */ |
| |
| /* |
| * From / To Node |
| */ |
| 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_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 */ |
| |
| /* |
| * From / To Node (NAT) |
| * GGG TODO Evaluate this, these may not be beneficial. Added in for now for completeness. |
| */ |
| 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 */ |
| 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 */ |
| |
| /* |
| * 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, instances of every type of classifier are 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. |
| */ |
| struct ecm_db_connection_classifier_type_assignment type_assignment[ECM_CLASSIFIER_TYPES]; |
| /* Each classifier TYPE has a list of connections that have a classifier instance (of that type) assigned to it */ |
| |
| uint16_t classifier_generation; /* Used to detect when a re-evaluation of this connection is necessary */ |
| uint32_t generations; /* Tracks how many times re-generation was seen for this connection */ |
| 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 */ |
| |
| /* |
| * Simple stats |
| */ |
| static int ecm_db_connection_count_by_protocol[256]; /* Each IP protocol has its own count */ |
| |
| /* |
| * Locking of the database - concurrency control |
| */ |
| static spinlock_t ecm_db_lock; /* Protect the table from SMP access. */ |
| |
| /* |
| * Connection validity |
| */ |
| static uint16_t ecm_db_classifier_generation = 0; /* Generation counter to detect out of date connections that should be reclassified */ |
| |
| /* |
| * System device linkage |
| */ |
| static struct device ecm_db_dev; /* System device linkage */ |
| |
| /* |
| * Management thread control |
| */ |
| static bool ecm_db_terminate_pending = false; /* When true the user has requested termination */ |
| |
| /* |
| * Character device stuff - used to communicate status back to user space |
| */ |
| #define ECM_DB_STATE_FILE_BUFFER_SIZE 8192 |
| static int ecm_db_dev_major_id = 0; /* Major ID of registered char dev from which we can dump out state to userspace */ |
| |
| #define ECM_DB_STATE_FILE_OUTPUT_CONNECTIONS 1 |
| #define ECM_DB_STATE_FILE_OUTPUT_MAPPINGS 2 |
| #define ECM_DB_STATE_FILE_OUTPUT_HOSTS 4 |
| #define ECM_DB_STATE_FILE_OUTPUT_NODES 8 |
| #define ECM_DB_STATE_FILE_OUTPUT_INTERFACES 16 |
| #define ECM_DB_STATE_FILE_OUTPUT_CONNECTIONS_CHAIN 32 |
| #define ECM_DB_STATE_FILE_OUTPUT_MAPPINGS_CHAIN 64 |
| #define ECM_DB_STATE_FILE_OUTPUT_HOSTS_CHAIN 128 |
| #define ECM_DB_STATE_FILE_OUTPUT_NODES_CHAIN 256 |
| #define ECM_DB_STATE_FILE_OUTPUT_INTERFACES_CHAIN 512 |
| #define ECM_DB_STATE_FILE_OUTPUT_PROTOCOL_COUNTS 1024 |
| #define ECM_DB_STATE_FILE_OUTPUT_CLASSIFIER_TYPE_ASSIGNMENTS 2048 |
| |
| /* |
| * Assistive flags for classifier connection type assignments |
| */ |
| #define ECM_DB_STATE_FILE_CTA_FLAG_ELEMENT_START_UNWRITTEN 1 |
| #define ECM_DB_STATE_FILE_CTA_FLAG_CONTENT_UNWRITTEN 2 |
| #define ECM_DB_STATE_FILE_CTA_FLAG_ELEMENT_END_UNWRITTEN 4 |
| |
| /* |
| * struct ecm_db_state_file_instance |
| * Structure used as state per open instance of our db state file |
| */ |
| struct ecm_db_state_file_instance { |
| int output_mask; /* The content types wanted by the user */ |
| struct ecm_db_connection_instance *ci; /* All connections list iterator */ |
| struct ecm_db_mapping_instance *mi; /* All mappings list iterator */ |
| struct ecm_db_host_instance *hi; /* All hosts list iterator */ |
| struct ecm_db_node_instance *ni; /* All nodes list iterator */ |
| struct ecm_db_iface_instance *ii; /* All interfaces list iterator */ |
| struct ecm_db_connection_instance *classifier_type_assignments[ECM_CLASSIFIER_TYPES]; |
| /* Classifier type connection assignments iterator, one for each classifier type */ |
| int classifier_type_assignments_flags[ECM_CLASSIFIER_TYPES]; |
| /* Classifier type connection assignments flags to assist the iteration */ |
| int connection_hash_index; /* Connection hash table lengths iterator */ |
| int mapping_hash_index; /* Mapping hash table lengths iterator */ |
| int host_hash_index; /* Host hash table lengths iterator */ |
| int node_hash_index; /* Node hash table lengths iterator */ |
| int iface_hash_index; /* Interface hash table lengths iterator */ |
| int protocol; /* Protocol connection count iterator */ |
| bool doc_start_written; /* Has xml doc opening element been written? */ |
| bool doc_end_written; /* Has xml doc closing element been written? */ |
| char msg_buffer[ECM_DB_STATE_FILE_BUFFER_SIZE]; /* Used to hold the current state message being output */ |
| char *msgp; /* Points into the msg buffer as we output it piece by piece */ |
| int msg_len; /* Length of the buffer still to be written out */ |
| #if (DEBUG_LEVEL > 0) |
| uint16_t magic; |
| #endif |
| }; |
| static int ecm_db_state_file_output_mask = ECM_DB_STATE_FILE_OUTPUT_CONNECTIONS; |
| /* Bit mask specifies which data to output in the state file */ |
| |
| /* |
| * 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", |
| }; |
| |
| /* |
| * 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_iface_nss_interface_identifier_get() |
| * Return the NSS interface number of this ecm interface |
| */ |
| int32_t ecm_db_iface_nss_interface_identifier_get(struct ecm_db_iface_instance *ii) |
| { |
| DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed", ii); |
| return ii->nss_interface_identifier; |
| } |
| EXPORT_SYMBOL(ecm_db_iface_nss_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); |
| 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) |
| { |
| 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->mapping_from->from_data_total += size; |
| ci->mapping_from->host->from_data_total += size; |
| ci->from_node->from_data_total += size; |
| ci->from_packet_total += packets; |
| 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 |
| */ |
| ci->from_node->iface->to_data_total += size; |
| ci->from_node->iface->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 |
| */ |
| ci->to_node->iface->from_data_total += size; |
| ci->to_node->iface->from_packet_total += packets; |
| spin_unlock_bh(&ecm_db_lock); |
| return; |
| } |
| |
| /* |
| * Update totals sent by the TO side of this connection |
| */ |
| ci->to_data_total += size; |
| ci->mapping_to->from_data_total += size; |
| ci->mapping_to->host->from_data_total += size; |
| ci->to_node->from_data_total += size; |
| ci->to_packet_total += packets; |
| 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 |
| */ |
| ci->to_node->iface->to_data_total += size; |
| ci->to_node->iface->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 |
| */ |
| ci->from_node->iface->from_data_total += size; |
| ci->from_node->iface->from_packet_total += packets; |
| spin_unlock_bh(&ecm_db_lock); |
| } |
| EXPORT_SYMBOL(ecm_db_connection_data_totals_update); |
| |
| /* |
| * 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) |
| { |
| 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->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->from_packet_total_dropped += packets; |
| 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 |
| */ |
| ci->from_node->iface->to_data_total_dropped += size; |
| ci->from_node->iface->to_packet_total_dropped += packets; |
| 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->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->to_packet_total_dropped += packets; |
| 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 |
| */ |
| ci->to_node->iface->to_data_total_dropped += size; |
| ci->to_node->iface->to_packet_total_dropped += packets; |
| 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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_classifier_generation_changed() |
| * Returns true if the classifier generation has changed for this connection. |
| * |
| * NOTE: The generation index will be reset on return from this call so action any true result immediately. |
| */ |
| bool ecm_db_connection_classifier_generation_changed(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); |
| if (ci->classifier_generation == ecm_db_classifier_generation) { |
| spin_unlock_bh(&ecm_db_lock); |
| return false; |
| } |
| ci->generations++; |
| ci->classifier_generation = ecm_db_classifier_generation; |
| spin_unlock_bh(&ecm_db_lock); |
| return true; |
| } |
| EXPORT_SYMBOL(ecm_db_connection_classifier_generation_changed); |
| |
| /* |
| * ecm_db_connection_classifier_peek_generation_changed() |
| * Returns true if the classifier generation has changed for this connection. |
| * |
| * NOTE: The generation index will NOT be reset on return from this call. |
| */ |
| bool ecm_db_connection_classifier_peek_generation_changed(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); |
| if (ci->classifier_generation == ecm_db_classifier_generation) { |
| spin_unlock_bh(&ecm_db_lock); |
| return false; |
| } |
| spin_unlock_bh(&ecm_db_lock); |
| return true; |
| } |
| EXPORT_SYMBOL(ecm_db_connection_classifier_peek_generation_changed); |
| |
| /* |
| * _ecm_db_connection_classifier_generation_change() |
| * Cause a specific connection to be re-generated |
| */ |
| static void _ecm_db_connection_classifier_generation_change(struct ecm_db_connection_instance *ci) |
| { |
| ci->classifier_generation = ecm_db_classifier_generation - 1; |
| } |
| |
| /* |
| * ecm_db_connection_classifier_generation_change() |
| * Cause a specific connection to be re-generated |
| */ |
| void ecm_db_connection_classifier_generation_change(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); |
| _ecm_db_connection_classifier_generation_change(ci); |
| spin_unlock_bh(&ecm_db_lock); |
| } |
| EXPORT_SYMBOL(ecm_db_connection_classifier_generation_change); |
| |
| /* |
| * ecm_db_classifier_generation_change() |
| * Bump the generation index to cause a re-classification of connections |
| * |
| * NOTE: Any connections that see activity after a call to this could be put back to undetermined qos state |
| * and driven back through the classifiers. |
| */ |
| void ecm_db_classifier_generation_change(void) |
| { |
| spin_lock_bh(&ecm_db_lock); |
| ecm_db_classifier_generation++; |
| spin_unlock_bh(&ecm_db_lock); |
| } |
| EXPORT_SYMBOL(ecm_db_classifier_generation_change); |
| |
| /* |
| * 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_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 |
| */ |
| static 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); |
| |
| /* |
| * _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); |
| } |
| |
| /* |
| * 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) |
| { |
| ecm_classifier_type_t ca_type; |
| 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; |
| } |
| |
| /* |
| * 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); |
| } |
| |
| /* |
| * 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; |
| 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; |
| |
| /* |
| * 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; |
| } |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| } |
| |
| /* |
| * 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->from_connections && !mi->tcp_from && !mi->udp_from && !mi->from, "%p: from not null: %p, %d, %d, %d\n", |
| mi, mi->from_connections, mi->tcp_from, mi->udp_from, mi->from); |
| DEBUG_ASSERT(!mi->to_connections && !mi->tcp_to && !mi->udp_to && !mi->to, "%p: to not null: %p, %d, %d, %d\n", |
| mi, mi->to_connections, mi->tcp_to, mi->udp_to, mi->to); |
| DEBUG_ASSERT(!mi->from_nat_connections && !mi->tcp_nat_from && !mi->udp_nat_from && !mi->nat_from, "%p: nat_from not null: %p, %d, %d, %d\n", |
| mi, mi->from_nat_connections, mi->tcp_nat_from, mi->udp_nat_from, mi->nat_from); |
| DEBUG_ASSERT(!mi->to_nat_connections && !mi->tcp_nat_to && !mi->udp_nat_to && !mi->nat_to, "%p: nat_to not null: %p, %d, %d, %d\n", |
| mi, mi->to_nat_connections, mi->tcp_nat_to, mi->udp_nat_to, mi->nat_to); |
| |
| /* |
| * 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]); |
| |
| /* |
| * 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--; |
| 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; |
| } |
| |
| DEBUG_ASSERT((hi->mappings == NULL) && (hi->mapping_count == 0), "%p: mappings not null\n", hi); |
| |
| /* |
| * 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; |
| } |
| |
| 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); |
| |
| /* |
| * 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]); |
| |
| /* |
| * 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--; |
| 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; |
| } |
| |
| DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii); |
| |
| /* |
| * 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]); |
| 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 temp; |
| uint32_t hash_val; |
| |
| /* |
| * The hash function only uses both host 1 address/port, host 2 address/port |
| * and protocol fields. |
| */ |
| temp = (u32)host1_addr[0] + host1_port + (u32)host2_addr[0] + host2_port + (uint32_t)protocol; |
| hash_val = (temp >> 24) ^ (temp >> 16) ^ (temp >> 8) ^ temp; |
| |
| 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) |
| { |
| return (ecm_db_connection_serial_hash_t)(serial & (ECM_DB_CONNECTION_SERIAL_HASH_SLOTS - 1)); |
| } |
| |
| /* |
| * 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 temp; |
| uint32_t hash_val; |
| |
| temp = (u32)address[0] + port; |
| hash_val = (temp >> 24) ^ (temp >> 16) ^ (temp >> 8) ^ temp; |
| |
| 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 temp; |
| uint32_t hash_val; |
| |
| temp = (uint32_t)address[0]; |
| hash_val = (temp >> 24) ^ (temp >> 16) ^ (temp >> 8) ^ temp; |
| |
| 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)(address[2] ^ address[4])) << 8) | (address[3] ^ address[5]); |
| hash_val &= (ECM_DB_NODE_HASH_SLOTS - 1); |
| |
| return (ecm_db_node_hash_t)hash_val; |
| } |
| |
| /* |
| * 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 temp; |
| uint32_t hash_val; |
| |
| temp = (uint32_t )(saddr[0] ^ daddr[0]); |
| hash_val = (temp >> 24) ^ (temp >> 16) ^ (temp >> 8) ^ temp; |
| return (ecm_db_iface_hash_t)(hash_val & (ECM_DB_IFACE_HASH_SLOTS - 1)); |
| } |
| |
| /* |
| * 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 temp; |
| uint32_t hash_val; |
| |
| temp = (uint32_t )(saddr[0] ^ daddr[0]); |
| hash_val = (temp >> 24) ^ (temp >> 16) ^ (temp >> 8) ^ temp; |
| return (ecm_db_iface_hash_t)(hash_val & (ECM_DB_IFACE_HASH_SLOTS - 1)); |
| } |
| |
| /* |
| * 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) |
| { |
| return (ecm_db_iface_hash_t)(address[5] & (ECM_DB_IFACE_HASH_SLOTS - 1)); |
| } |
| |
| /* |
| * 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) |
| { |
| return (ecm_db_iface_hash_t)(pppoe_session_id & (ECM_DB_IFACE_HASH_SLOTS - 1)); |
| } |
| |
| /* |
| * 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) |
| { |
| return (ecm_db_iface_hash_t)(os_specific_ident & (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) |
| { |
| return (ecm_db_iface_hash_t)(os_specific_ident & (ECM_DB_IFACE_HASH_SLOTS - 1)); |
| } |
| |
| /* |
| * 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) |
| { |
| return (ecm_db_iface_hash_t)(os_specific_ident & (ECM_DB_IFACE_HASH_SLOTS - 1)); |
| } |
| |
| /* |
| * 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); |
| |
| 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); |
| |
| |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * ecm_db_iface_pppoe_session_info_get() |
| * Get vlan 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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() |
| * 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; |
| struct ecm_db_connection_instance *ci; |
| |
| 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); |
| |
| /* |
| * 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\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; |
| } |
| 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_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_node_from_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_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_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_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); |
| |
| /* |
| * 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_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); |
| |
| /* |
| * 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 priority order according to the classifier type. |
| * Only assigned classifiers are in this list, allowing fast retrival of in-order 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; |
| struct ecm_db_connection_classifier_type_assignment *ta; |
| struct ecm_db_connection_classifier_type_assignment_list *tal; |
| |
| 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; |
| |
| /* |
| * 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); |
| |
| 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; |
| struct ecm_db_connection_classifier_type_assignment *ta; |
| |
| 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; |
| } |
| |
| /* |
| * 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); |
| 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); |
| |
| /* |
| * 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_classifier_generation_change(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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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 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; |
| 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; |
| |
| 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->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]); |
| |
| DEBUG_TRACE("c\n"); |
| |
| /* |
| * 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 mapping 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]); |
| |
| /* |
| * 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; |
| |
| |
| /* |
| * 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 |
| */ |
| ci->classifier_generation = ecm_db_classifier_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->from_connections == NULL, "%p: connections not null\n", mi); |
| DEBUG_ASSERT(mi->to_connections == NULL, "%p: connections not null\n", mi); |
| 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->from && !mi->to && !mi->tcp_from && !mi->tcp_to && !mi->udp_from && !mi->udp_to, "%p: count errors\n", mi); |
| 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]); |
| |
| /* |
| * 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++; |
| 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->mappings == NULL) && (hi->mapping_count == 0), "%p: mappings not null\n", hi); |
| DEBUG_ASSERT(!(hi->flags & ECM_DB_HOST_FLAGS_INSERTED), "%p: inserted\n", hi); |
| 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->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); |
| DEBUG_ASSERT((ni->iface == NULL), "%p: iface not null\n", ni); |
| DEBUG_ASSERT(!(ni->flags & ECM_DB_NODE_FLAGS_INSERTED), "%p: inserted\n", ni); |
| 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; |
| |
| /* |
| * 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++; |
| 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_iface_xml_state_get_open() |
| * Get the start of XML state for an interface object |
| */ |
| static int ecm_db_iface_xml_state_get_open(struct ecm_db_iface_instance *ii, char *buf, int buf_sz) |
| { |
| int count; |
| int node_count; |
| uint32_t time_added; |
| 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; |
| int32_t interface_identifier; |
| int32_t nss_interface_identifier; |
| char name[IFNAMSIZ]; |
| int32_t mtu; |
| ecm_db_iface_type_t type; |
| |
| DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii); |
| DEBUG_TRACE("%p: Open iface msg\n", ii); |
| |
| /* |
| * Create a small xml stats block, like: |
| * <iface blah="" ... > |
| * Extract general information from the iface for inclusion into the message |
| */ |
| node_count = ecm_db_iface_node_count_get(ii); |
| time_added = ii->time_added; |
| 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); |
| type = ii->type; |
| spin_lock_bh(&ecm_db_lock); |
| strcpy(name, ii->name); |
| mtu = ii->mtu; |
| interface_identifier = ii->interface_identifier; |
| nss_interface_identifier = ii->nss_interface_identifier; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| /* |
| * Prep the message |
| */ |
| count = snprintf(buf, buf_sz, |
| "<iface type=\"%d\" name=\"%s\" nodes=\"%d\" time_added=\"%u\"" |
| " mtu=\"%d\" interface_identifier=\"%d\" nss_interface_identifier=\"%d\"" |
| " from_data_total=\"%llu\" to_data_total=\"%llu\" from_packet_total=\"%llu\" to_packet_total=\"%llu\"" |
| " from_data_total_dropped=\"%llu\" to_data_total_dropped=\"%llu\" from_packet_total_dropped=\"%llu\" to_packet_total_dropped=\"%llu\">\n", |
| type, |
| name, |
| node_count, |
| time_added, |
| mtu, |
| interface_identifier, |
| nss_interface_identifier, |
| 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 ((count <= 0) || (count >= buf_sz)) { |
| return -1; |
| } |
| |
| return count; |
| } |
| |
| /* |
| * ecm_db_iface_xml_state_get_close() |
| * Get the end of XML state for an interface object |
| */ |
| static int ecm_db_iface_xml_state_get_close(struct ecm_db_iface_instance *ii, char *buf, int buf_sz) |
| { |
| int count; |
| |
| DEBUG_CHECK_MAGIC(ii, ECM_DB_IFACE_INSTANCE_MAGIC, "%p: magic failed\n", ii); |
| DEBUG_TRACE("%p: Close iface msg\n", ii); |
| |
| /* |
| * Create a small xml stats block, like: |
| * </iface> |
| */ |
| |
| /* |
| * Prep the message |
| */ |
| count = snprintf(buf, buf_sz, "</iface>\n"); |
| |
| if ((count <= 0) || (count >= buf_sz)) { |
| return -1; |
| } |
| |
| return count; |
| } |
| |
| /* |
| * ecm_db_iface_ethernet_xml_state_get() |
| * Return interface type specific state |
| */ |
| static int ecm_db_iface_ethernet_xml_state_get(struct ecm_db_iface_instance *ii, char *buf, int buf_sz) |
| { |
| int count; |
| int total; |
| 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); |
| |
| /* |
| * Write out opening element |
| */ |
| total = 0; |
| count = ecm_db_iface_xml_state_get_open(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out type specific data |
| */ |
| count = snprintf(buf + total, buf_sz - total, "<ethernet address=\"%pM\"/>\n", address); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out closing element |
| */ |
| count = ecm_db_iface_xml_state_get_close(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| return total; |
| } |
| |
| /* |
| * 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 nss_interface_identifier, |
| ecm_db_iface_final_callback_t final, void *arg) |
| { |
| ecm_db_iface_hash_t 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); |
| DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii); |
| 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; |
| ii->xml_state_get = ecm_db_iface_ethernet_xml_state_get; |
| ii->arg = arg; |
| ii->final = final; |
| strcpy(ii->name, name); |
| ii->mtu = mtu; |
| ii->interface_identifier = interface_identifier; |
| ii->nss_interface_identifier = nss_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; |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * ecm_db_iface_lag_xml_state_get() |
| * Return interface type specific state |
| */ |
| static int ecm_db_iface_lag_xml_state_get(struct ecm_db_iface_instance *ii, char *buf, int buf_sz) |
| { |
| int count; |
| int total; |
| 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); |
| |
| /* |
| * Write out opening element |
| */ |
| total = 0; |
| count = ecm_db_iface_xml_state_get_open(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out type specific data |
| */ |
| count = snprintf(buf + total, buf_sz - total, "<lag address=\"%pM\"/>\n", address); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out closing element |
| */ |
| count = ecm_db_iface_xml_state_get_close(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count == (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| return total; |
| } |
| |
| /* |
| * 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 nss_interface_identifier, |
| ecm_db_iface_final_callback_t final, void *arg) |
| { |
| ecm_db_iface_hash_t 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); |
| DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii); |
| 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; |
| ii->xml_state_get = ecm_db_iface_lag_xml_state_get; |
| ii->arg = arg; |
| ii->final = final; |
| strcpy(ii->name, name); |
| ii->mtu = mtu; |
| ii->interface_identifier = interface_identifier; |
| ii->nss_interface_identifier = nss_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; |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * ecm_db_iface_bridge_xml_state_get() |
| * Return interface type specific state |
| */ |
| static int ecm_db_iface_bridge_xml_state_get(struct ecm_db_iface_instance *ii, char *buf, int buf_sz) |
| { |
| int count; |
| int total; |
| 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); |
| |
| /* |
| * Write out opening element |
| */ |
| total = 0; |
| count = ecm_db_iface_xml_state_get_open(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out type specific data |
| */ |
| count = snprintf(buf + total, buf_sz - total, "<bridge address=\"%pM\"/>\n", address); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out closing element |
| */ |
| count = ecm_db_iface_xml_state_get_close(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| return total; |
| } |
| |
| /* |
| * 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 nss_interface_identifier, |
| ecm_db_iface_final_callback_t final, void *arg) |
| { |
| ecm_db_iface_hash_t 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); |
| DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii); |
| 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; |
| ii->xml_state_get = ecm_db_iface_bridge_xml_state_get; |
| ii->arg = arg; |
| ii->final = final; |
| strcpy(ii->name, name); |
| ii->mtu = mtu; |
| ii->interface_identifier = interface_identifier; |
| ii->nss_interface_identifier = nss_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; |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * ecm_db_iface_vlan_xml_state_get() |
| * Return interface type specific state |
| */ |
| static int ecm_db_iface_vlan_xml_state_get(struct ecm_db_iface_instance *ii, char *buf, int buf_sz) |
| { |
| int count; |
| int total; |
| 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); |
| |
| /* |
| * Write out opening element |
| */ |
| total = 0; |
| count = ecm_db_iface_xml_state_get_open(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out type specific data |
| */ |
| count = snprintf(buf + total, buf_sz - total, "<vlan address=\"%pM\" vlan_tag=\"%x\" vlan_tpid=\"%x\"/>\n", address, vlan_tag, vlan_tpid); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out closing element |
| */ |
| count = ecm_db_iface_xml_state_get_close(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| return total; |
| } |
| |
| /* |
| * 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 nss_interface_identifier, |
| ecm_db_iface_final_callback_t final, void *arg) |
| { |
| ecm_db_iface_hash_t 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); |
| DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii); |
| 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; |
| ii->xml_state_get = ecm_db_iface_vlan_xml_state_get; |
| ii->arg = arg; |
| ii->final = final; |
| strcpy(ii->name, name); |
| ii->mtu = mtu; |
| ii->interface_identifier = interface_identifier; |
| ii->nss_interface_identifier = nss_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; |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * ecm_db_iface_pppoe_xml_state_get() |
| * Return interface type specific state |
| */ |
| static int ecm_db_iface_pppoe_xml_state_get(struct ecm_db_iface_instance *ii, char *buf, int buf_sz) |
| { |
| int count; |
| int total; |
| 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); |
| |
| /* |
| * Write out opening element |
| */ |
| total = 0; |
| count = ecm_db_iface_xml_state_get_open(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out type specific data |
| */ |
| count = snprintf(buf + total, buf_sz - total, "<pppoe pppoe_session_id=\"%u\" remote_mac=\"%pM\"/>\n", |
| pppoe_session_id, remote_mac); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out closing element |
| */ |
| count = ecm_db_iface_xml_state_get_close(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| return total; |
| } |
| |
| /* |
| * 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 nss_interface_identifier, ecm_db_iface_final_callback_t final, |
| void *arg) |
| { |
| ecm_db_iface_hash_t 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); |
| DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii); |
| 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; |
| ii->xml_state_get = ecm_db_iface_pppoe_xml_state_get; |
| ii->arg = arg; |
| ii->final = final; |
| strcpy(ii->name, name); |
| ii->mtu = mtu; |
| ii->interface_identifier = interface_identifier; |
| ii->nss_interface_identifier = nss_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; |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * ecm_db_iface_unknown_xml_state_get() |
| * Return interface type specific state |
| */ |
| static int ecm_db_iface_unknown_xml_state_get(struct ecm_db_iface_instance *ii, char *buf, int buf_sz) |
| { |
| int count; |
| int total; |
| 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); |
| |
| /* |
| * Write out opening element |
| */ |
| total = 0; |
| count = ecm_db_iface_xml_state_get_open(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out type specific data |
| */ |
| count = snprintf(buf + total, buf_sz - total, "<unknown os_specific_ident=\"%u\"/>\n", os_specific_ident); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out closing element |
| */ |
| count = ecm_db_iface_xml_state_get_close(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| return total; |
| } |
| |
| /* |
| * ecm_db_iface_loopback_xml_state_get() |
| * Return interface type specific state |
| */ |
| static int ecm_db_iface_loopback_xml_state_get(struct ecm_db_iface_instance *ii, char *buf, int buf_sz) |
| { |
| int count; |
| int total; |
| 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); |
| |
| /* |
| * Write out opening element |
| */ |
| total = 0; |
| count = ecm_db_iface_xml_state_get_open(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out type specific data |
| */ |
| count = snprintf(buf + total, buf_sz - total, "<loopback os_specific_ident=\"%u\"/>\n", os_specific_ident); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out closing element |
| */ |
| count = ecm_db_iface_xml_state_get_close(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| return total; |
| } |
| |
| /* |
| * ecm_db_iface_ipsec_tunnel_xml_state_get() |
| * Return interface type specific state |
| * |
| * GGG TODO Output state on ipsec tunnel specific data |
| */ |
| static int ecm_db_iface_ipsec_tunnel_xml_state_get(struct ecm_db_iface_instance *ii, char *buf, int buf_sz) |
| { |
| int count; |
| int total; |
| 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); |
| |
| /* |
| * Write out opening element |
| */ |
| total = 0; |
| count = ecm_db_iface_xml_state_get_open(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out type specific data |
| */ |
| count = snprintf(buf + total, buf_sz - total, "<ipsec_tunnel os_specific_ident=\"%u\"/>\n", os_specific_ident); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Write out closing element |
| */ |
| count = ecm_db_iface_xml_state_get_close(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| return total; |
| } |
| |
| /* |
| * 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 nss_interface_identifier, |
| ecm_db_iface_final_callback_t final, void *arg) |
| { |
| ecm_db_iface_hash_t 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); |
| DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii); |
| 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; |
| ii->xml_state_get = ecm_db_iface_unknown_xml_state_get; |
| ii->arg = arg; |
| ii->final = final; |
| strcpy(ii->name, name); |
| ii->mtu = mtu; |
| ii->interface_identifier = interface_identifier; |
| ii->nss_interface_identifier = nss_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; |
| |
| /* |
| * 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); |
| |
| /* |
| * 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 nss_interface_identifier, |
| ecm_db_iface_final_callback_t final, void *arg) |
| { |
| ecm_db_iface_hash_t 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); |
| DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii); |
| 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; |
| ii->xml_state_get = ecm_db_iface_loopback_xml_state_get; |
| ii->arg = arg; |
| ii->final = final; |
| strcpy(ii->name, name); |
| ii->mtu = mtu; |
| ii->interface_identifier = interface_identifier; |
| ii->nss_interface_identifier = nss_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; |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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 nss_interface_identifier, |
| ecm_db_iface_final_callback_t final, void *arg) |
| { |
| ecm_db_iface_hash_t 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); |
| DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii); |
| 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; |
| ii->xml_state_get = ecm_db_iface_loopback_xml_state_get; |
| ii->arg = arg; |
| ii->final = final; |
| strcpy(ii->name, name); |
| ii->mtu = mtu; |
| ii->interface_identifier = interface_identifier; |
| ii->nss_interface_identifier = nss_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; |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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 nss_interface_identifier, |
| ecm_db_iface_final_callback_t final, void *arg) |
| { |
| ecm_db_iface_hash_t 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); |
| DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii); |
| 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; |
| ii->xml_state_get = ecm_db_iface_loopback_xml_state_get; |
| ii->arg = arg; |
| ii->final = final; |
| strcpy(ii->name, name); |
| ii->mtu = mtu; |
| ii->interface_identifier = interface_identifier; |
| ii->nss_interface_identifier = nss_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; |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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 nss_interface_identifier, |
| ecm_db_iface_final_callback_t final, void *arg) |
| { |
| ecm_db_iface_hash_t 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); |
| DEBUG_ASSERT((ii->nodes == NULL) && (ii->node_count == 0), "%p: nodes not null\n", ii); |
| 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; |
| ii->xml_state_get = ecm_db_iface_ipsec_tunnel_xml_state_get; |
| ii->arg = arg; |
| ii->final = final; |
| strcpy(ii->name, name); |
| ii->mtu = mtu; |
| ii->interface_identifier = interface_identifier; |
| ii->nss_interface_identifier = nss_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; |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * 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; |
| |
| /* |
| * 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; |
| |
| /* |
| * 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); |
| |
| /* |
| * 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_state_dev_major() |
| */ |
| static ssize_t ecm_db_get_state_dev_major(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| ssize_t count; |
| int major; |
| |
| spin_lock_bh(&ecm_db_lock); |
| major = ecm_db_dev_major_id; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| count = snprintf(buf, (ssize_t)PAGE_SIZE, "%d\n", major); |
| |
| return count; |
| } |
| |
| /* |
| * ecm_db_get_connection_count() |
| */ |
| static ssize_t ecm_db_get_connection_count(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| ssize_t count; |
| int num; |
| |
| /* |
| * Operate under our locks |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| num = ecm_db_connection_count; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| count = snprintf(buf, (ssize_t)PAGE_SIZE, "%d\n", num); |
| return count; |
| } |
| |
| /* |
| * ecm_db_get_host_count() |
| */ |
| static ssize_t ecm_db_get_host_count(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| ssize_t count; |
| int num; |
| |
| /* |
| * Operate under our locks |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| num = ecm_db_host_count; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| count = snprintf(buf, (ssize_t)PAGE_SIZE, "%d\n", num); |
| return count; |
| } |
| |
| /* |
| * ecm_db_get_mapping_count() |
| */ |
| static ssize_t ecm_db_get_mapping_count(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| ssize_t count; |
| int num; |
| |
| /* |
| * Operate under our locks |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| num = ecm_db_mapping_count; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| count = snprintf(buf, (ssize_t)PAGE_SIZE, "%d\n", num); |
| return count; |
| } |
| |
| /* |
| * ecm_db_get_node_count() |
| */ |
| static ssize_t ecm_db_get_node_count(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| ssize_t count; |
| int num; |
| |
| /* |
| * Operate under our locks |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| num = ecm_db_node_count; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| count = snprintf(buf, (ssize_t)PAGE_SIZE, "%d\n", num); |
| return count; |
| } |
| |
| /* |
| * ecm_db_get_iface_count() |
| */ |
| static ssize_t ecm_db_get_iface_count(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| ssize_t count; |
| int num; |
| |
| /* |
| * Operate under our locks |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| num = ecm_db_iface_count; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| count = snprintf(buf, (ssize_t)PAGE_SIZE, "%d\n", num); |
| return count; |
| } |
| |
| /* |
| * ecm_db_get_defunct_all() |
| * Reading this file returns the accumulated total of all objects |
| */ |
| static ssize_t ecm_db_get_defunct_all(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| ssize_t count; |
| int num; |
| |
| /* |
| * 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); |
| |
| count = snprintf(buf, (ssize_t)PAGE_SIZE, "%d\n", num); |
| return count; |
| } |
| |
| /* |
| * ecm_db_set_defunct_all() |
| */ |
| static ssize_t ecm_db_set_defunct_all(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| ecm_db_connection_defunct_all(); |
| return count; |
| } |
| |
| /* |
| * 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 device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| int tcp_count; |
| int udp_count; |
| int other_count; |
| int total_count; |
| ssize_t count; |
| |
| /* |
| * 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); |
| |
| count = snprintf(buf, (ssize_t)PAGE_SIZE, "tcp %d udp %d other %d total %d\n", tcp_count, udp_count, other_count, total_count); |
| return count; |
| } |
| |
| /* |
| * ecm_db_get_state_file_output_mask() |
| */ |
| static ssize_t ecm_db_get_state_file_output_mask(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| ssize_t count; |
| int num; |
| |
| /* |
| * Operate under our locks |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| num = ecm_db_state_file_output_mask; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| count = snprintf(buf, (ssize_t)PAGE_SIZE, "%d\n", num); |
| return count; |
| } |
| |
| /* |
| * ecm_db_set_state_file_output_mask() |
| */ |
| static ssize_t ecm_db_set_state_file_output_mask(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| char num_buf[12]; |
| int num; |
| |
| /* |
| * Get the number from buf into a properly z-termed number buffer |
| */ |
| if (count > 11) return 0; |
| memcpy(num_buf, buf, count); |
| num_buf[count] = '\0'; |
| sscanf(num_buf, "%d", &num); |
| DEBUG_TRACE("ecm_db_state_file_output_mask = %x\n", num); |
| |
| /* |
| * Operate under our locks |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| ecm_db_state_file_output_mask = num; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| return count; |
| } |
| |
| /* |
| * SysFS attributes for the default classifier itself. |
| */ |
| static DEVICE_ATTR(state_dev_major, 0444, ecm_db_get_state_dev_major, NULL); |
| static DEVICE_ATTR(connection_count, 0444, ecm_db_get_connection_count, NULL); |
| static DEVICE_ATTR(host_count, 0444, ecm_db_get_host_count, NULL); |
| static DEVICE_ATTR(mapping_count, 0444, ecm_db_get_mapping_count, NULL); |
| static DEVICE_ATTR(node_count, 0444, ecm_db_get_node_count, NULL); |
| static DEVICE_ATTR(iface_count, 0444, ecm_db_get_iface_count, NULL); |
| static DEVICE_ATTR(defunct_all, 0644, ecm_db_get_defunct_all, ecm_db_set_defunct_all); |
| static DEVICE_ATTR(connection_counts_simple, 0444, ecm_db_get_connection_counts_simple, NULL); |
| static DEVICE_ATTR(state_file_output_mask, 0644, ecm_db_get_state_file_output_mask, ecm_db_set_state_file_output_mask); |
| |
| /* |
| * System device attribute array. |
| */ |
| static struct device_attribute *ecm_db_attrs[] = { |
| &dev_attr_state_dev_major, |
| &dev_attr_connection_count, |
| &dev_attr_host_count, |
| &dev_attr_mapping_count, |
| &dev_attr_node_count, |
| &dev_attr_iface_count, |
| &dev_attr_defunct_all, |
| &dev_attr_connection_counts_simple, |
| &dev_attr_state_file_output_mask, |
| }; |
| |
| /* |
| * Sub system node of the ECM default classifier |
| * Sys device control points can be found at /sys/devices/system/ecm_db/ecm_dbX/ |
| */ |
| static struct bus_type ecm_db_subsys = { |
| .name = "ecm_db", |
| .dev_name = "ecm_db", |
| }; |
| |
| /* |
| * ecm_db_dev_release() |
| * This is a dummy release function for device. |
| */ |
| static void ecm_db_dev_release(struct device *dev) |
| { |
| |
| } |
| |
| /* |
| * ecm_db_connection_heirarchy_xml_state_get() |
| * Output XML state for an interface heirarchy list. |
| * |
| * Return value is comptible with snprintf() |
| */ |
| static int ecm_db_connection_heirarchy_xml_state_get(char *element, struct ecm_db_iface_instance *interfaces[], int32_t first_interface, |
| char *buf, int buf_sz) |
| { |
| int count; |
| int total; |
| int i; |
| |
| /* |
| * Output the opening element |
| */ |
| total = 0; |
| count = snprintf(buf + total, |
| buf_sz - total, |
| "<%s count=\"%d\">\n", |
| element, |
| ECM_DB_IFACE_HEIRARCHY_MAX - first_interface); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| |
| /* |
| * Iterate the interface heirarchy list and output the information |
| */ |
| for (i = first_interface; i < ECM_DB_IFACE_HEIRARCHY_MAX; ++i) { |
| struct ecm_db_iface_instance *ii = interfaces[i]; |
| DEBUG_TRACE("Element: %s, Output interface @ %d: %p\n", element, i, ii); |
| count = ii->xml_state_get(ii, buf + total, buf_sz - total); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| } |
| |
| /* |
| * Output closing element |
| */ |
| count = snprintf(buf + total, |
| buf_sz - total, |
| "</%s>\n", |
| element); |
| if ((count <= 0) || (count >= (buf_sz - total))) { |
| return -1; |
| } |
| total += count; |
| return total; |
| } |
| |
| /* |
| * ecm_db_char_dev_conn_msg_prep() |
| * Prepare a connection message |
| */ |
| static bool ecm_db_char_dev_conn_msg_prep(struct ecm_db_state_file_instance *sfi) |
| { |
| int msg_len; |
| int extra_msg_len; |
| 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 protocol; |
| bool is_routed; |
| uint32_t generations; |
| 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; |
| 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("%p: Prep conn msg for %p\n", sfi, sfi->ci); |
| |
| /* |
| * Identify expiration |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| if (sfi->ci->defunct_timer.group == ECM_DB_TIMER_GROUPS_MAX) { |
| expires_in = -1; |
| } else { |
| expires_in = (long int)(sfi->ci->defunct_timer.timeout - ecm_db_time); |
| if (expires_in <= 0) { |
| expires_in = 0; |
| } |
| } |
| spin_unlock_bh(&ecm_db_lock); |
| |
| /* |
| * Extract information from the connection for inclusion into the message |
| */ |
| sport = sfi->ci->mapping_from->port; |
| sport_nat = sfi->ci->mapping_nat_from->port; |
| dport = sfi->ci->mapping_to->port; |
| dport_nat = sfi->ci->mapping_nat_to->port; |
| |
| hi = sfi->ci->mapping_to->host; |
| ecm_ip_addr_to_string(dip_address, hi->address); |
| ni = sfi->ci->to_node; |
| sprintf(dnode_address, "%pM", ni->address); |
| hi = sfi->ci->mapping_nat_to->host; |
| ecm_ip_addr_to_string(dip_address_nat, hi->address); |
| |
| hi = sfi->ci->mapping_from->host; |
| ecm_ip_addr_to_string(sip_address, hi->address); |
| ni = sfi->ci->from_node; |
| sprintf(snode_address, "%pM", ni->address); |
| hi = sfi->ci->mapping_nat_from->host; |
| ecm_ip_addr_to_string(sip_address_nat, hi->address); |
| |
| ni = sfi->ci->to_nat_node; |
| sprintf(dnode_address_nat, "%pM", ni->address); |
| |
| ni = sfi->ci->from_nat_node; |
| sprintf(snode_address_nat, "%pM", ni->address); |
| |
| direction = sfi->ci->direction; |
| protocol = sfi->ci->protocol; |
| is_routed = sfi->ci->is_routed; |
| generations = sfi->ci->generations; |
| time_added = sfi->ci->time_added; |
| serial = sfi->ci->serial; |
| ecm_db_connection_data_stats_get(sfi->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); |
| |
| /* |
| * Use fresh buffer |
| */ |
| sfi->msgp = sfi->msg_buffer; |
| |
| /* |
| * Prep the message |
| */ |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "<conn serial=\"%u\" sip_address=\"%s\" sip_address_nat=\"%s\" sport=\"%d\" sport_nat=\"%d\" snode_address=\"%s\" snode_address_nat=\"%s\"" |
| " dip_address=\"%s\" dip_address_nat=\"%s\" dport=\"%d\" dport_nat=\"%d\" dnode_address=\"%s\" dnode_address_nat=\"%s\"" |
| " protocol=\"%d\" is_routed=\"%d\" expires=\"%ld\" direction=\"%d\" time_added=\"%u\" generations=\"%u\"" |
| " from_data_total=\"%llu\" to_data_total=\"%llu\" from_packet_total=\"%llu\" to_packet_total=\"%llu\" from_data_total_dropped=\"%llu\" to_data_total_dropped=\"%llu\" from_packet_total_dropped=\"%llu\" to_packet_total_dropped=\"%llu\">\n", |
| serial, |
| sip_address, |
| sip_address_nat, |
| sport, |
| sport_nat, |
| snode_address, |
| snode_address_nat, |
| dip_address, |
| dip_address_nat, |
| dport, |
| dport_nat, |
| dnode_address, |
| dnode_address_nat, |
| protocol, |
| is_routed, |
| expires_in, |
| direction, |
| time_added, |
| generations, |
| 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 ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| |
| /* |
| * Output interface heirarchy information for this connection |
| */ |
| first_interface = ecm_db_connection_from_interfaces_get_and_ref(sfi->ci, interfaces); |
| extra_msg_len = ecm_db_connection_heirarchy_xml_state_get("from_interfaces", interfaces, first_interface, sfi->msgp + msg_len, ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len); |
| ecm_db_connection_interfaces_deref(interfaces, first_interface); |
| if ((extra_msg_len <= 0) || (extra_msg_len >= (ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len))) { |
| return false; |
| } |
| msg_len += extra_msg_len; |
| |
| first_interface = ecm_db_connection_to_interfaces_get_and_ref(sfi->ci, interfaces); |
| extra_msg_len = ecm_db_connection_heirarchy_xml_state_get("to_interfaces", interfaces, first_interface, sfi->msgp + msg_len, ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len); |
| ecm_db_connection_interfaces_deref(interfaces, first_interface); |
| if ((extra_msg_len <= 0) || (extra_msg_len >= (ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len))) { |
| return false; |
| } |
| msg_len += extra_msg_len; |
| |
| first_interface = ecm_db_connection_from_nat_interfaces_get_and_ref(sfi->ci, interfaces); |
| extra_msg_len = ecm_db_connection_heirarchy_xml_state_get("from_nat_interfaces", interfaces, first_interface, sfi->msgp + msg_len, ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len); |
| ecm_db_connection_interfaces_deref(interfaces, first_interface); |
| if ((extra_msg_len <= 0) || (extra_msg_len >= (ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len))) { |
| return false; |
| } |
| msg_len += extra_msg_len; |
| |
| first_interface = ecm_db_connection_to_nat_interfaces_get_and_ref(sfi->ci, interfaces); |
| extra_msg_len = ecm_db_connection_heirarchy_xml_state_get("to_nat_interfaces", interfaces, first_interface, sfi->msgp + msg_len, ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len); |
| ecm_db_connection_interfaces_deref(interfaces, first_interface); |
| if ((extra_msg_len <= 0) || (extra_msg_len >= (ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len))) { |
| return false; |
| } |
| msg_len += extra_msg_len; |
| |
| /* |
| * Output front end state |
| */ |
| feci = ecm_db_connection_front_end_get_and_ref(sfi->ci); |
| extra_msg_len = feci->xml_state_get(feci, sfi->msgp + msg_len, ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len); |
| feci->deref(feci); |
| if ((extra_msg_len <= 0) || (extra_msg_len >= (ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len))) { |
| return false; |
| } |
| msg_len += extra_msg_len; |
| |
| /* |
| * Grab references to the assigned classifiers so we can produce state for them |
| */ |
| aci_count = ecm_db_connection_classifier_assignments_get_and_ref(sfi->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]; |
| extra_msg_len = aci->xml_state_get(aci, sfi->msgp + msg_len, ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len); |
| |
| if ((extra_msg_len <= 0) || (extra_msg_len >= (ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len))) { |
| ecm_db_connection_assignments_release(aci_count, assignments); |
| return false; |
| } |
| |
| msg_len += extra_msg_len; |
| } |
| ecm_db_connection_assignments_release(aci_count, assignments); |
| |
| /* |
| * Write out end element |
| */ |
| extra_msg_len = snprintf(sfi->msgp + msg_len, ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len, "</conn>\n"); |
| if ((extra_msg_len <= 0) || (extra_msg_len >= (ECM_DB_STATE_FILE_BUFFER_SIZE - msg_len))) { |
| return false; |
| } |
| msg_len += extra_msg_len; |
| |
| /* |
| * Record the message length |
| */ |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| return true; |
| } |
| |
| /* |
| * ecm_db_char_dev_mapping_msg_prep() |
| * Prepare a mapping message |
| */ |
| static bool ecm_db_char_dev_mapping_msg_prep(struct ecm_db_state_file_instance *sfi) |
| { |
| int msg_len; |
| 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; |
| 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; |
| |
| DEBUG_TRACE("%p: Prep mapping msg for %p\n", sfi, sfi->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(sfi->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 = sfi->mi->port; |
| time_added = sfi->mi->time_added; |
| ecm_db_mapping_data_stats_get(sfi->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); |
| hi = sfi->mi->host; |
| ecm_ip_addr_to_string(address, hi->address); |
| |
| /* |
| * Use fresh buffer |
| */ |
| sfi->msgp = sfi->msg_buffer; |
| |
| /* |
| * Prep the message |
| */ |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "<mapping address=\"%s\" port=\"%d\" from=\"%d\" to=\"%d\" tcp_from=\"%d\" tcp_to=\"%d\" udp_from=\"%d\" udp_to=\"%d\"" |
| " nat_from=\"%d\" nat_to=\"%d\" tcp_nat_from=\"%d\" tcp_nat_to=\"%d\" udp_nat_from=\"%d\" udp_nat_to=\"%d\"" |
| " from_data_total=\"%llu\" to_data_total=\"%llu\" from_packet_total=\"%llu\" to_packet_total=\"%llu\"" |
| " from_data_total_dropped=\"%llu\" to_data_total_dropped=\"%llu\" from_packet_total_dropped=\"%llu\" to_packet_total_dropped=\"%llu\"" |
| " time_added=\"%u\"/>\n", |
| address, |
| port, |
| from, |
| to, |
| tcp_from, |
| tcp_to, |
| udp_from, |
| udp_to, |
| nat_from, |
| nat_to, |
| tcp_nat_from, |
| tcp_nat_to, |
| udp_nat_from, |
| udp_nat_to, |
| 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, |
| time_added); |
| |
| if ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| return true; |
| } |
| |
| /* |
| * ecm_db_char_dev_host_msg_prep() |
| * Prepare a host message |
| */ |
| static bool ecm_db_char_dev_host_msg_prep(struct ecm_db_state_file_instance *sfi) |
| { |
| int msg_len; |
| char address[50]; |
| int mapping_count; |
| uint32_t time_added; |
| 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; |
| bool on_link; |
| |
| DEBUG_TRACE("%p: Prep host msg for %p\n", sfi, sfi->hi); |
| |
| /* |
| * Create a small xml stats element for our host. |
| * Extract information from the host for inclusion into the message |
| */ |
| mapping_count = ecm_db_host_mapping_count_get(sfi->hi); |
| ecm_ip_addr_to_string(address, sfi->hi->address); |
| time_added = sfi->hi->time_added; |
| ecm_db_host_data_stats_get(sfi->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); |
| on_link = sfi->hi->on_link; |
| |
| /* |
| * Use fresh buffer |
| */ |
| sfi->msgp = sfi->msg_buffer; |
| |
| /* |
| * Prep the message |
| */ |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "<host address=\"%s\" mappings=\"%d\" time_added=\"%u\" on_link=\"%d\"" |
| " from_data_total=\"%llu\" to_data_total=\"%llu\" from_packet_total=\"%llu\" to_packet_total=\"%llu\"" |
| " from_data_total_dropped=\"%llu\" to_data_total_dropped=\"%llu\" from_packet_total_dropped=\"%llu\" to_packet_total_dropped=\"%llu\"/>\n", |
| address, |
| mapping_count, |
| time_added, |
| on_link, |
| 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 ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| return true; |
| } |
| |
| /* |
| * ecm_db_char_dev_nod__msg_prep() |
| * Prepare a node message |
| */ |
| static bool ecm_db_char_dev_node_msg_prep(struct ecm_db_state_file_instance *sfi) |
| { |
| int msg_len; |
| char address[25]; |
| int from_connections_count; |
| int to_connections_count; |
| int from_nat_connections_count; |
| int to_nat_connections_count; |
| uint32_t time_added; |
| 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_TRACE("%p: Prep node msg for %p\n", sfi, sfi->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 |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| from_connections_count = sfi->ni->from_connections_count; |
| to_connections_count = sfi->ni->to_connections_count; |
| from_nat_connections_count = sfi->ni->from_nat_connections_count; |
| to_nat_connections_count = sfi->ni->to_nat_connections_count; |
| spin_unlock_bh(&ecm_db_lock); |
| time_added = sfi->ni->time_added; |
| ecm_db_node_data_stats_get(sfi->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); |
| sprintf(address, "%pM", sfi->ni->address); |
| |
| /* |
| * Use fresh buffer |
| */ |
| sfi->msgp = sfi->msg_buffer; |
| |
| /* |
| * Prep the message |
| */ |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "<node address=\"%s\" from_connections_count=\"%d\" to_connections_count=\"%d\" from_nat_connections_count=\"%d\" to_nat_connections_count=\"%d\" time_added=\"%u\"" |
| " from_data_total=\"%llu\" to_data_total=\"%llu\" from_packet_total=\"%llu\" to_packet_total=\"%llu\"" |
| " from_data_total_dropped=\"%llu\" to_data_total_dropped=\"%llu\" from_packet_total_dropped=\"%llu\" to_packet_total_dropped=\"%llu\" />\n", |
| address, |
| from_connections_count, |
| to_connections_count, |
| from_nat_connections_count, |
| to_nat_connections_count, |
| time_added, |
| 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 ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| return true; |
| } |
| |
| /* |
| * ecm_db_char_dev_iface_msg_prep() |
| * Prepare an interface message |
| */ |
| static bool ecm_db_char_dev_iface_msg_prep(struct ecm_db_state_file_instance *sfi) |
| { |
| int msg_len; |
| |
| DEBUG_TRACE("%p: Prep iface msg for %p\n", sfi, sfi->ii); |
| |
| /* |
| * Use fresh buffer |
| */ |
| sfi->msgp = sfi->msg_buffer; |
| |
| /* |
| * Prep the message |
| */ |
| msg_len = sfi->ii->xml_state_get(sfi->ii, sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE); |
| |
| if ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| |
| /* |
| * Record the message length |
| */ |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| return true; |
| } |
| |
| /* |
| * ecm_db_char_dev_conn_chain_msg_prep() |
| * Generate an conn hash table chain message |
| */ |
| static bool ecm_db_char_dev_conn_chain_msg_prep(struct ecm_db_state_file_instance *sfi) |
| { |
| int chain_len; |
| int msg_len; |
| DEBUG_TRACE("%p: Prep conn chain msg\n", sfi); |
| |
| /* |
| * Get hash table chain length |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| chain_len = ecm_db_connection_table_lengths[sfi->connection_hash_index]; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| /* |
| * Use fresh buffer |
| */ |
| sfi->msgp = sfi->msg_buffer; |
| |
| /* |
| * Create a small xml stats block like: |
| * <conn_chain hash_index="" chain_length=""/> |
| */ |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "<conn_chain hash_index=\"%d\" chain_length=\"%d\"/>\n", |
| sfi->connection_hash_index, |
| chain_len); |
| if ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| return true; |
| } |
| |
| /* |
| * ecm_db_char_dev_mapping_chain_msg_prep() |
| * Generate an mapping hash table chain message |
| */ |
| static bool ecm_db_char_dev_mapping_chain_msg_prep(struct ecm_db_state_file_instance *sfi) |
| { |
| int chain_len; |
| int msg_len; |
| DEBUG_TRACE("%p: Prep mapping chain msg\n", sfi); |
| |
| /* |
| * Get hash table chain length |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| chain_len = ecm_db_mapping_table_lengths[sfi->mapping_hash_index]; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| /* |
| * Use fresh buffer |
| */ |
| sfi->msgp = sfi->msg_buffer; |
| |
| /* |
| * Create a small xml stats block like: |
| * <mapping_chain hash_index="" chain_length=""/> |
| */ |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "<mapping_chain hash_index=\"%d\" chain_length=\"%d\"/>\n", |
| sfi->mapping_hash_index, |
| chain_len); |
| if ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| return true; |
| } |
| |
| /* |
| * ecm_db_char_dev_host_chain_msg_prep() |
| * Generate an host hash table chain message |
| */ |
| static bool ecm_db_char_dev_host_chain_msg_prep(struct ecm_db_state_file_instance *sfi) |
| { |
| int chain_len; |
| int msg_len; |
| DEBUG_TRACE("%p: Prep host chain msg\n", sfi); |
| |
| /* |
| * Get hash table chain length |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| chain_len = ecm_db_host_table_lengths[sfi->host_hash_index]; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| /* |
| * Use fresh buffer |
| */ |
| sfi->msgp = sfi->msg_buffer; |
| |
| /* |
| * Create a small xml stats block like: |
| * <host_chain hash_index="" chain_length=""/> |
| */ |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "<host_chain hash_index=\"%d\" chain_length=\"%d\"/>\n", |
| sfi->host_hash_index, |
| chain_len); |
| if ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| return true; |
| } |
| |
| /* |
| * ecm_db_char_dev_node_chain_msg_prep() |
| * Generate an node hash table chain message |
| */ |
| static bool ecm_db_char_dev_node_chain_msg_prep(struct ecm_db_state_file_instance *sfi) |
| { |
| int chain_len; |
| int msg_len; |
| DEBUG_TRACE("%p: Prep node chain msg\n", sfi); |
| |
| /* |
| * Get hash table chain length |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| chain_len = ecm_db_node_table_lengths[sfi->node_hash_index]; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| /* |
| * Use fresh buffer |
| */ |
| sfi->msgp = sfi->msg_buffer; |
| |
| /* |
| * Create a small xml stats block like: |
| * <node_chain hash_index="" chain_length=""/> |
| */ |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "<node_chain hash_index=\"%d\" chain_length=\"%d\"/>\n", |
| sfi->node_hash_index, |
| chain_len); |
| if ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| return true; |
| } |
| |
| /* |
| * ecm_db_char_dev_iface_chain_msg_prep() |
| * Generate an interface hash table chain message |
| */ |
| static bool ecm_db_char_dev_iface_chain_msg_prep(struct ecm_db_state_file_instance *sfi) |
| { |
| int chain_len; |
| int msg_len; |
| DEBUG_TRACE("%p: Prep iface chain msg\n", sfi); |
| |
| /* |
| * Get hash table chain length |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| chain_len = ecm_db_iface_table_lengths[sfi->iface_hash_index]; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| /* |
| * Use fresh buffer |
| */ |
| sfi->msgp = sfi->msg_buffer; |
| |
| /* |
| * Create a small xml stats block like: |
| * <iface_chain hash_index="" chain_length=""/> |
| */ |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "<iface_chain hash_index=\"%d\" chain_length=\"%d\"/>\n", |
| sfi->iface_hash_index, |
| chain_len); |
| if ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| return true; |
| } |
| |
| /* |
| * ecm_db_char_dev_protocol_count_msg_prep() |
| * Generate a protocol usage message |
| */ |
| static bool ecm_db_char_dev_protocol_count_msg_prep(struct ecm_db_state_file_instance *sfi) |
| { |
| int count; |
| int msg_len; |
| DEBUG_TRACE("%p: Prep protocol msg\n", sfi); |
| |
| /* |
| * Get protocol connection total count |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| count = ecm_db_connection_count_by_protocol[sfi->protocol]; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| /* |
| * Use fresh buffer |
| */ |
| sfi->msgp = sfi->msg_buffer; |
| |
| /* |
| * Create a small xml stats block like: |
| * <conn_proto_count protocol="" count=""/> |
| */ |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "<conn_proto_count protocol=\"%d\" count=\"%d\"/>\n", |
| sfi->protocol, |
| count); |
| if ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| return true; |
| } |
| |
| /* |
| * ecm_db_char_dev_cta_msg_prep() |
| * Generate a classifier type assignment message |
| */ |
| static bool ecm_db_char_dev_cta_msg_prep(struct ecm_db_state_file_instance *sfi, ecm_classifier_type_t ca_type) |
| { |
| int msg_len; |
| struct ecm_db_connection_instance *ci; |
| int flags; |
| |
| DEBUG_TRACE("%p: Prep classifier type assignment msg: %d\n", sfi, ca_type); |
| |
| /* |
| * Use fresh buffer |
| */ |
| sfi->msgp = sfi->msg_buffer; |
| |
| /* |
| * Output message according to where we are with iteration. |
| * Output element start? |
| * We are producing an element like: |
| * <classifier_conn_type_assignment ca_type="2"> |
| * <connection serial="1625"/> |
| * ... |
| * </classifier_conn_type_assignment> |
| */ |
| flags = sfi->classifier_type_assignments_flags[ca_type]; |
| if (flags & ECM_DB_STATE_FILE_CTA_FLAG_ELEMENT_START_UNWRITTEN) { |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "<classifier_conn_type_assignment ca_type=\"%d\">\n", |
| ca_type); |
| if ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| |
| sfi->classifier_type_assignments_flags[ca_type] &= ~ECM_DB_STATE_FILE_CTA_FLAG_ELEMENT_START_UNWRITTEN; |
| return true; |
| } |
| |
| /* |
| * Output connection detail, if any further to output for this type. |
| */ |
| ci = sfi->classifier_type_assignments[ca_type]; |
| if (ci) { |
| DEBUG_CHECK_MAGIC(ci, ECM_DB_CONNECTION_INSTANCE_MAGIC, "%p: magic failed", ci); |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "<connection serial=\"%u\"/>\n", |
| ci->serial); |
| if ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| |
| /* |
| * Prep next connection for when we are called again, releasing this one. |
| */ |
| if (!(sfi->classifier_type_assignments[ca_type] = ecm_db_connection_by_classifier_type_assignment_get_and_ref_next(ci, ca_type))) { |
| sfi->classifier_type_assignments_flags[ca_type] &= ~ECM_DB_STATE_FILE_CTA_FLAG_CONTENT_UNWRITTEN; |
| } |
| ecm_db_connection_by_classifier_type_assignment_deref(ci, ca_type); |
| return true; |
| } |
| |
| /* |
| * Output closing element? |
| */ |
| if (flags & ECM_DB_STATE_FILE_CTA_FLAG_ELEMENT_END_UNWRITTEN) { |
| msg_len = snprintf(sfi->msgp, ECM_DB_STATE_FILE_BUFFER_SIZE, |
| "</classifier_conn_type_assignment>\n"); |
| if ((msg_len <= 0) || (msg_len >= ECM_DB_STATE_FILE_BUFFER_SIZE)) { |
| return false; |
| } |
| sfi->msg_len = msg_len; |
| DEBUG_TRACE("%p: Prepped msg %s\n", sfi, sfi->msgp); |
| |
| sfi->classifier_type_assignments_flags[ca_type] &= ~ECM_DB_STATE_FILE_CTA_FLAG_ELEMENT_END_UNWRITTEN; |
| return true; |
| } |
| |
| return true; |
| } |
| |
| /* |
| * ecm_db_state_file_classifier_type_assignments_release() |
| * Releases any uniterated classifier assignments |
| */ |
| static void ecm_db_state_file_classifier_type_assignments_release(struct ecm_db_state_file_instance *sfi) |
| { |
| ecm_classifier_type_t ca_type; |
| |
| for (ca_type = 0; ca_type < ECM_CLASSIFIER_TYPES; ++ca_type) { |
| struct ecm_db_connection_instance *ci; |
| |
| ci = sfi->classifier_type_assignments[ca_type]; |
| if (!ci) { |
| continue; |
| } |
| |
| ecm_db_connection_by_classifier_type_assignment_deref(ci, ca_type); |
| } |
| } |
| |
| /* |
| * ecm_db_char_device_open() |
| * Opens the special char device file which we use to dump our state. |
| * |
| */ |
| static int ecm_db_char_device_open(struct inode *inode, struct file *file) |
| { |
| struct ecm_db_state_file_instance *sfi; |
| |
| DEBUG_INFO("State open\n"); |
| |
| /* |
| * Allocate state information for the reading |
| */ |
| DEBUG_ASSERT(file->private_data == NULL, "unexpected double open: %p?\n", file->private_data); |
| |
| sfi = (struct ecm_db_state_file_instance *)kzalloc(sizeof(struct ecm_db_state_file_instance), GFP_ATOMIC | __GFP_NOWARN); |
| if (!sfi) { |
| return -ENOMEM; |
| } |
| DEBUG_SET_MAGIC(sfi, ECM_DB_STATE_FILE_INSTANCE_MAGIC); |
| file->private_data = sfi; |
| |
| /* |
| * Snapshot output mask for this file |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| sfi->output_mask = ecm_db_state_file_output_mask; |
| spin_unlock_bh(&ecm_db_lock); |
| |
| /* |
| * Take references to each object list that we are going to generate state for. |
| */ |
| if (sfi->output_mask & ECM_DB_STATE_FILE_OUTPUT_CONNECTIONS) { |
| sfi->ci = ecm_db_connections_get_and_ref_first(); |
| } |
| if (sfi->output_mask & ECM_DB_STATE_FILE_OUTPUT_MAPPINGS) { |
| sfi->mi = ecm_db_mappings_get_and_ref_first(); |
| } |
| if (sfi->output_mask & ECM_DB_STATE_FILE_OUTPUT_HOSTS) { |
| sfi->hi = ecm_db_hosts_get_and_ref_first(); |
| } |
| if (sfi->output_mask & ECM_DB_STATE_FILE_OUTPUT_NODES) { |
| sfi->ni = ecm_db_nodes_get_and_ref_first(); |
| } |
| if (sfi->output_mask & ECM_DB_STATE_FILE_OUTPUT_INTERFACES) { |
| sfi->ii = ecm_db_interfaces_get_and_ref_first(); |
| } |
| if (sfi->output_mask & ECM_DB_STATE_FILE_OUTPUT_CLASSIFIER_TYPE_ASSIGNMENTS) { |
| ecm_classifier_type_t ca_type; |
| |
| /* |
| * Iterate all classifier type assignments. |
| * Hold the head of each list to start us off on our iterating process. |
| */ |
| for (ca_type = 0; ca_type < ECM_CLASSIFIER_TYPES; ++ca_type) { |
| if ((sfi->classifier_type_assignments[ca_type] = ecm_db_connection_by_classifier_type_assignment_get_and_ref_first(ca_type))) { |
| /* |
| * There is some content to write for this ca_type |
| */ |
| sfi->classifier_type_assignments_flags[ca_type] = |
| ECM_DB_STATE_FILE_CTA_FLAG_ELEMENT_START_UNWRITTEN | ECM_DB_STATE_FILE_CTA_FLAG_CONTENT_UNWRITTEN | ECM_DB_STATE_FILE_CTA_FLAG_ELEMENT_END_UNWRITTEN; |
| |
| } |
| } |
| } |
| |
| /* |
| * Cannot do this if the event processing thread is exiting |
| */ |
| spin_lock_bh(&ecm_db_lock); |
| if (ecm_db_terminate_pending) { |
| spin_unlock_bh(&ecm_db_lock); |
| |
| if (sfi->ci) { |
| ecm_db_connection_deref(sfi->ci); |
| } |
| if (sfi->mi) { |
| ecm_db_mapping_deref(sfi->mi); |
| } |
| if (sfi->hi) { |
| ecm_db_host_deref(sfi->hi); |
| } |
| if (sfi->ni) { |
| ecm_db_node_deref(sfi->ni); |
| } |
| if (sfi->ii) { |
| ecm_db_iface_deref(sfi->ii); |
| } |
| ecm_db_state_file_classifier_type_assignments_release(sfi); |
| |
| kfree(sfi); |
| DEBUG_WARN("Terminating\n"); |
| return -EBUSY; |
| } |
| spin_unlock_bh(&ecm_db_lock); |
| |
| DEBUG_INFO("State opened %p\n", sfi); |
| |
| return 0; |
| } |
| |
| /* |
| * ecm_db_char_device_release() |
| * Called when a process closes the device file. |
| */ |
| static int ecm_db_char_device_release(struct inode *inode, struct file *file) |
| { |
| struct ecm_db_state_file_instance *sfi; |
| |
| sfi = (struct ecm_db_state_file_instance *)file->private_data; |
| DEBUG_CHECK_MAGIC(sfi, ECM_DB_STATE_FILE_INSTANCE_MAGIC, "%p: magic failed", sfi); |
| DEBUG_INFO("%p: State close\n", sfi); |
| |
| /* |
| * Release any references held |
| */ |
| if (sfi->ci) { |
| ecm_db_connection_deref(sfi->ci); |
| } |
| if (sfi->mi) { |
| ecm_db_mapping_deref(sfi->mi); |
| } |
| if (sfi->hi) { |
| ecm_db_host_deref(sfi->hi); |
| } |
| if (sfi->ni) { |
| ecm_db_node_deref(sfi->ni); |
| } |
| if (sfi->ii) { |
| ecm_db_iface_deref(sfi->ii); |
| } |
| ecm_db_state_file_classifier_type_assignments_release(sfi); |
| |
| DEBUG_CLEAR_MAGIC(sfi); |
| kfree(sfi); |
| |
| return 0; |
| } |
| |
| /* |
| * ecm_db_char_device_read() |
| * Called to read the state |
| */ |
| static ssize_t ecm_db_char_device_read(struct file *file, /* see include/linux/fs.h */ |
| char *buffer, /* buffer to fill with data */ |
| size_t length, /* length of the buffer */ |
| loff_t *offset) /* Doesn't apply - this is a char file */ |
| { |
| struct ecm_db_state_file_instance *sfi; |
| int bytes_read = 0; /* Number of bytes actually written to the buffer */ |
| ecm_classifier_type_t ca_type; |
| |
| sfi = (struct ecm_db_state_file_instance *)file->private_data; |
| DEBUG_CHECK_MAGIC(sfi, ECM_DB_STATE_FILE_INSTANCE_MAGIC, "%p: magic failed", sfi); |
| DEBUG_TRACE("%p: State read up to length %d bytes\n", sfi, length); |
| |
| |
| /* |
| * If there is still some message remaining to be output then complete that first |
| */ |
| if (sfi->msg_len) { |
| goto char_device_read_output; |
| } |
| |
| if (!sfi->doc_start_written) { |
| sfi->msgp = sfi->msg_buffer; |
| sfi->msg_len = sprintf(sfi->msgp, "<ecm_db>\n"); |
| sfi->doc_start_written = true; |
| goto char_device_read_output; |
| } |
| |
| if (sfi->ci) { |
| struct ecm_db_connection_instance *cin; |
| if (!ecm_db_char_dev_conn_msg_prep(sfi)) { |
| return -EIO; |
| } |
| |
| /* |
| * Next connection for when we return |
| */ |
| cin = ecm_db_connection_get_and_ref_next(sfi->ci); |
| ecm_db_connection_deref(sfi->ci); |
| sfi->ci = cin; |
| |
| goto char_device_read_output; |
| } |
| |
| if (sfi->mi) { |
| struct ecm_db_mapping_instance *min; |
| if (!ecm_db_char_dev_mapping_msg_prep(sfi)) { |
| return -EIO; |
| } |
| |
| /* |
| * Next mapping for when we return |
| */ |
| min = ecm_db_mapping_get_and_ref_next(sfi->mi); |
| ecm_db_mapping_deref(sfi->mi); |
| sfi->mi = min; |
| |
| goto char_device_read_output; |
| } |
| |
| if (sfi->hi) { |
| struct ecm_db_host_instance *hin; |
| if (!ecm_db_char_dev_host_msg_prep(sfi)) { |
| return -EIO; |
| } |
| |
| /* |
| * Next host for when we return |
| */ |
| hin = ecm_db_host_get_and_ref_next(sfi->hi); |
| ecm_db_host_deref(sfi->hi); |
| sfi->hi = hin; |
| |
| goto char_device_read_output; |
| } |
| |
| if (sfi->ni) { |
| struct ecm_db_node_instance *nin; |
| if (!ecm_db_char_dev_node_msg_prep(sfi)) { |
| return -EIO; |
| } |
| |
| /* |
| * Next node for when we return |
| */ |
| nin = ecm_db_node_get_and_ref_next(sfi->ni); |
| ecm_db_node_deref(sfi->ni); |
| sfi->ni = nin; |
| |
| goto char_device_read_output; |
| } |
| |
| if (sfi->ii) { |
| struct ecm_db_iface_instance *iin; |
| if (!ecm_db_char_dev_iface_msg_prep(sfi)) { |
| return -EIO; |
| } |
| |
| /* |
| * Next iface for when we return |
| */ |
| iin = ecm_db_interface_get_and_ref_next(sfi->ii); |
| ecm_db_iface_deref(sfi->ii); |
| sfi->ii = iin; |
| |
| goto char_device_read_output; |
| } |
| |
| if ((sfi->output_mask & ECM_DB_STATE_FILE_OUTPUT_CONNECTIONS_CHAIN) && (sfi->connection_hash_index < ECM_DB_CONNECTION_HASH_SLOTS)) { |
| if (!ecm_db_char_dev_conn_chain_msg_prep(sfi)) { |
| return -EIO; |
| } |
| sfi->connection_hash_index++; |
| goto char_device_read_output; |
| } |
| |
| if ((sfi->output_mask & ECM_DB_STATE_FILE_OUTPUT_MAPPINGS_CHAIN) && (sfi->mapping_hash_index < ECM_DB_MAPPING_HASH_SLOTS)) { |
| if (!ecm_db_char_dev_mapping_chain_msg_prep(sfi)) { |
| return -EIO; |
| } |
| sfi->mapping_hash_index++; |
| goto char_device_read_output; |
| } |
| |
| if ((sfi->output_mask & ECM_DB_STATE_FILE_OUTPUT_HOSTS_CHAIN) && (sfi->host_hash_index < ECM_DB_HOST_HASH_SLOTS)) { |
| if (!ecm_db_char_dev_host_chain_msg_prep(sfi)) { |
| return -EIO; |
| } |
| sfi->host_hash_index++; |
| goto char_device_read_output; |
| } |
| |
| if ((sfi->output_mask & ECM_DB_STATE_FILE_OUTPUT_NODES_CHAIN) && (sfi->node_hash_index < ECM_DB_NODE_HASH_SLOTS)) { |
| if (!ecm_db_char_dev_node_chain_msg_prep(sfi)) { |
| return -EIO; |
| } |
| sfi->node_hash_index++; |
| goto char_device_read_output; |
| } |
| |
| if ((sfi->output_mask & ECM_DB_STATE_FILE_OUTPUT_INTERFACES_CHAIN) && (sfi->iface_hash_index < ECM_DB_IFACE_HASH_SLOTS)) { |
| if (!ecm_db_char_dev_iface_chain_msg_prep(sfi)) { |
| return -EIO; |
| } |
| sfi->iface_hash_index++; |
| goto char_device_read_output; |
| } |
| |
| if ((sfi->output_mask & ECM_DB_STATE_FILE_OUTPUT_PROTOCOL_COUNTS) && (sfi->protocol < 256)) { |
| if (!ecm_db_char_dev_protocol_count_msg_prep(sfi)) { |
| return -EIO; |
| } |
| sfi->protocol++; |
| goto char_device_read_output; |
| } |
| |
| for (ca_type = 0; ca_type < ECM_CLASSIFIER_TYPES; ++ca_type) { |
| int flags; |
| |
| flags = sfi->classifier_type_assignments_flags[ca_type]; |
| |
| if (!flags) { |
| /* |
| * Nothing further to write out for this ca_type |
| */ |
| continue; |
| } |
| if (!ecm_db_char_dev_cta_msg_prep(sfi, ca_type)) { |
| return -EIO; |
| } |
| goto char_device_read_output; |
| } |
| |
| if (!sfi->doc_end_written) { |
| sfi->msgp = sfi->msg_buffer; |
| sfi->msg_len = sprintf(sfi->msgp, "</ecm_db>\n"); |
| sfi->doc_end_written = true; |
| goto char_device_read_output; |
| } |
| |
| /* |
| * EOF |
| */ |
| return 0; |
| |
| char_device_read_output: |
| |
| /* |
| * If supplied buffer is small we limit what we output |
| */ |
| bytes_read = sfi->msg_len; |
| if (bytes_read > length) { |
| bytes_read = length; |
| } |
| if (copy_to_user(buffer, sfi->msgp, bytes_read)) { |
| return -EIO; |
| } |
| sfi->msg_len -= bytes_read; |
| sfi->msgp += bytes_read; |
| |
| DEBUG_TRACE("State read done, bytes_read %d bytes\n", bytes_read); |
| |
| /* |
| * Most read functions return the number of bytes put into the buffer |
| */ |
| return bytes_read; |
| } |
| |
| /* |
| * ecm_db_char_device_write() |
| */ |
| static ssize_t ecm_db_char_device_write(struct file *filp, const char *buff, size_t len, loff_t * off) |
| { |
| return -EINVAL; |
| } |
| |
| /* |
| * File operations used in the char device |
| * NOTE: The char device is a simple file that allows us to dump our connection tracking state |
| */ |
| static struct file_operations ecm_db_fops = { |
| .read = ecm_db_char_device_read, |
| .write = ecm_db_char_device_write, |
| .open = ecm_db_char_device_open, |
| .release = ecm_db_char_device_release |
| }; |
| |
| /* |
| * 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); |
| } |
| |
| /* |
| * ecm_db_init() |
| */ |
| int ecm_db_init(void) |
| { |
| int result; |
| int i; |
| DEBUG_INFO("ECM Module init\n"); |
| |
| /* |
| * Initialise our global database lock |
| */ |
| spin_lock_init(&ecm_db_lock); |
| |
| /* |
| * Register System device control |
| */ |
| result = subsys_system_register(&ecm_db_subsys, NULL); |
| if (result) { |
| DEBUG_ERROR("Failed to register SysFS class %d\n", result); |
| return result; |
| } |
| |
| /* |
| * Register SYSFS device control |
| */ |
| memset(&ecm_db_dev, 0, sizeof(ecm_db_dev)); |
| ecm_db_dev.id = 0; |
| ecm_db_dev.bus = &ecm_db_subsys; |
| ecm_db_dev.release = ecm_db_dev_release; |
| result = device_register(&ecm_db_dev); |
| if (result) { |
| DEBUG_ERROR("Failed to register System device %d\n", result); |
| goto task_cleanup_1; |
| } |
| |
| /* |
| * Create files, one for each parameter supported by this module |
| */ |
| for (i = 0; i < ARRAY_SIZE(ecm_db_attrs); i++) { |
| result = device_create_file(&ecm_db_dev, ecm_db_attrs[i]); |
| if (result) { |
| DEBUG_ERROR("Failed to create attribute file %d\n", result); |
| goto task_cleanup_2; |
| } |
| } |
| |
| /* |
| * Register a char device that we will use to provide a dump of our state |
| */ |
| result = register_chrdev(0, ecm_db_subsys.name, &ecm_db_fops); |
| if (result < 0) { |
| DEBUG_ERROR("Failed to register chrdev %d\n", result); |
| goto task_cleanup_2; |
| } |
| ecm_db_dev_major_id = result; |
| DEBUG_TRACE("registered chr dev major id assigned %d\n", ecm_db_dev_major_id); |
| |
| /* |
| * 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)); |
| |
| /* |
| * Reset classifier type assignment lists |
| */ |
| memset(ecm_db_connection_classifier_type_assignments, 0, sizeof(ecm_db_connection_classifier_type_assignments)); |
| |
| return 0; |
| |
| task_cleanup_2: |
| while (--i >= 0) { |
| device_remove_file(&ecm_db_dev, ecm_db_attrs[i]); |
| } |
| device_unregister(&ecm_db_dev); |
| task_cleanup_1: |
| bus_unregister(&ecm_db_subsys); |
| |
| return result; |
| } |
| EXPORT_SYMBOL(ecm_db_init); |
| |
| /* |
| * ecm_db_exit() |
| */ |
| void ecm_db_exit(void) |
| { |
| int i; |
| 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); |
| unregister_chrdev(ecm_db_dev_major_id, ecm_db_subsys.name); |
| |
| for (i = 0; i < ARRAY_SIZE(ecm_db_attrs); i++) { |
| device_remove_file(&ecm_db_dev, ecm_db_attrs[i]); |
| } |
| |
| device_unregister(&ecm_db_dev); |
| bus_unregister(&ecm_db_subsys); |
| } |
| EXPORT_SYMBOL(ecm_db_exit); |