ecm_interface.h

/*
 **************************************************************************
 * 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.
 **************************************************************************
 */

/*
 * ECM_INTERFACE_PPP_SUPPORT
 *	Comment this line out to disable support for working with PPP interfaces
 *
 * The ECM requires specific kernel API changes to work with PPP channels and channel type specific API's
 * If your kernel does not have this support - or - you do not wish to support PPP interface types -
 * comment this line out.
 */
#define ECM_INTERFACE_PPP_SUPPORT

/*
 * struct ecm_interface_route
 *	An ecm route supports either v4 or v6 routing information
 */
struct ecm_interface_route {
	struct dst_entry *dst;			/* Both ipv4 and v6 have a common dst entry */
	union {
		struct rtable *rtv4;		/* IPv4 route */
		struct rt6_info *rtv6;		/* IPv6 route */
	} rt;
	bool v4_route;				/* True when a v4 route, false when v6 */
};

/*
 * External defined functions
 */
extern struct net_device *bond_get_tx_dev(struct sk_buff *skb, uint8_t *src_mac,
					  uint8_t *dst_mac, void *src,
					  void *dst, uint16_t protocol,
					  struct net_device *bond_dev);
bool ecm_interface_mac_addr_get(ip_addr_t addr, uint8_t *mac_addr, bool *on_link, ip_addr_t gw_addr);
bool ecm_interface_find_route_by_addr(ip_addr_t addr, struct ecm_interface_route *ecm_rt);
void ecm_interface_route_release(struct ecm_interface_route *rt);
struct ecm_db_iface_instance *ecm_interface_establish_and_ref(struct net_device *dev);
int32_t ecm_interface_heirarchy_construct(struct ecm_db_iface_instance *interfaces[], ip_addr_t packet_src_addr, ip_addr_t packet_dest_addr, int packet_protocol, struct net_device *given_dest_dev, bool is_routed, struct net_device *given_src_dev, uint8_t *dest_node_addr, uint8_t *src_node_addr);
void ecm_interface_stats_update(struct ecm_db_connection_instance *ci, uint32_t from_tx_packets, uint32_t from_tx_bytes, uint32_t from_rx_packets, uint32_t from_rx_bytes, uint32_t to_tx_packets, uint32_t to_tx_bytes, uint32_t to_rx_packets, uint32_t to_rx_bytes);
struct net_device *ecm_interface_dev_find_by_addr(ip_addr_t addr, bool *from_local_addr);