| /* |
| ************************************************************************** |
| * Copyright (c) 2014-2021 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. |
| ************************************************************************** |
| */ |
| |
| extern int ecm_interface_src_check; /* Source interface check flag */ |
| #if defined(CONFIG_NET_CLS_ACT) && defined(ECM_CLASSIFIER_DSCP_IGS) |
| extern int ecm_interface_igs_enabled; /* IGS enabled check flag */ |
| #endif |
| |
| /* |
| * 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. It is an overlay pointer of rtv4 or rtv6 */ |
| union { |
| struct rtable *rtv4; /* IPv4 route */ |
| struct rt6_info *rtv6; /* IPv6 route */ |
| } rt; |
| bool v4_route; /* True when a v4 route, false when v6 */ |
| }; |
| |
| /* |
| * Netdev Index value for a Loopback device |
| */ |
| #define ECM_INTERFACE_LOOPBACK_DEV_INDEX 1 |
| |
| /* |
| * IPSec Core and Interface Definition |
| */ |
| #define ECM_INTERFACE_IPSEC_DEFAULT_CORE 0x2 |
| #define ECM_INTERFACE_IPSEC_CORE_OFFSET 24 |
| |
| /* |
| * 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, |
| __be16 *layer4hdr); |
| bool ecm_interface_mac_addr_get_no_route(struct net_device *dev, ip_addr_t ip_addr, uint8_t *mac_addr); |
| 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); |
| #ifdef ECM_IPV6_ENABLE |
| struct neighbour *ecm_interface_ipv6_neigh_get(ip_addr_t addr); |
| void ecm_interface_send_neighbour_solicitation(struct net_device *dev, ip_addr_t addr); |
| #endif |
| void ecm_interface_send_arp_request(struct net_device *dest_dev, ip_addr_t dest_addr, bool on_link, ip_addr_t gw_addr); |
| struct neighbour *ecm_interface_ipv4_neigh_get(ip_addr_t addr); |
| bool ecm_interface_is_pptp(struct sk_buff *skb, const struct net_device *out); |
| bool ecm_interface_is_l2tp_packet_by_version(struct sk_buff *skb, const struct net_device *out, int ver); |
| bool ecm_interface_is_l2tp_pptp(struct sk_buff *skb, const struct net_device *out); |
| struct ecm_db_iface_instance *ecm_interface_establish_and_ref(struct ecm_front_end_connection_instance *feci, struct net_device *dev, struct sk_buff *skb); |
| #ifdef ECM_INTERFACE_OVS_BRIDGE_ENABLE |
| bool ecm_interface_is_ovs_bridge_port(const struct net_device *dev); |
| #endif |
| #ifdef ECM_MULTICAST_ENABLE |
| int32_t ecm_interface_multicast_heirarchy_construct_routed(struct ecm_front_end_connection_instance *feci, struct ecm_db_iface_instance *interfaces, struct net_device *in_dev, ip_addr_t packet_src_addr, ip_addr_t packet_dest_addr, uint8_t maxvif, uint32_t *dst_dev, uint32_t *to_interface_first, bool mfc_update, __be16 *layer4hdr, struct sk_buff *skb); |
| |
| int32_t ecm_interface_multicast_heirarchy_construct_bridged(struct ecm_front_end_connection_instance *feci, struct ecm_db_iface_instance *interfaces, struct net_device *br_dev, ip_addr_t src_addr, ip_addr_t dest_addr, uint8_t mc_max_dst, int32_t *mc_dst_dev, uint32_t *to_interface_first, uint8_t *src_node_addr, __be16 *layer4hdr, struct sk_buff *skb); |
| |
| void ecm_interface_multicast_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); |
| |
| bool ecm_interface_multicast_find_updates_to_iface_list(struct ecm_db_connection_instance *ci, struct ecm_multicast_if_update *, uint32_t flags, bool is_br_snooper, uint32_t *dst_dev, uint32_t max_to_dev, struct net_device *brdev); |
| |
| bool ecm_interface_multicast_check_for_br_dev(uint32_t dest_if[], uint8_t max_if); |
| bool ecm_interface_multicast_is_iface_type(int32_t mc_if_index[], int32_t max_if_index, unsigned short type); |
| |
| int32_t ecm_interface_multicast_check_for_src_ifindex(int32_t mc_if_index[], int32_t max_if_index, int32_t if_num); |
| int32_t ecm_interface_multicast_from_heirarchy_construct(struct ecm_front_end_connection_instance *feci, |
| struct ecm_db_iface_instance *interfaces[], |
| ip_addr_t packet_src_addr, ip_addr_t packet_dest_addr, |
| int ip_version, 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, |
| __be16 *layer4hdr, struct sk_buff *skb); |
| int32_t ecm_interface_multicast_filter_src_interface(struct ecm_db_connection_instance *ci, uint32_t *mc_dst_if_index); |
| #ifdef ECM_INTERFACE_OVS_BRIDGE_ENABLE |
| bool ecm_interface_multicast_check_for_ovs_br_dev(uint32_t dest_if[], uint8_t max_if); |
| int ecm_interface_multicast_ovs_to_interface_get_and_ref(struct ecm_db_connection_instance *ci, |
| struct net_device **to_ovs_port, |
| struct net_device **to_ovs_brdev); |
| #endif |
| #endif |
| |
| int32_t ecm_interface_heirarchy_construct(struct ecm_front_end_connection_instance *feci, |
| struct ecm_db_iface_instance *interfaces[], |
| struct net_device *const_if, struct net_device *other_if, |
| ip_addr_t lookup_src_addr, |
| ip_addr_t lookup_dest_addr, |
| ip_addr_t real_dest_addr, |
| int ip_version, 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, |
| __be16 *layer4hdr, struct sk_buff *skb, struct ecm_front_end_ovs_params *op); |
| 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); |
| |
| struct net_device *ecm_interface_get_and_hold_dev_master(struct net_device *dev); |
| void ecm_interface_dev_regenerate_connections(struct net_device *dev); |
| struct net_device *ecm_interface_dev_find_by_local_addr(ip_addr_t addr); |
| bool ecm_interface_find_gateway(ip_addr_t addr, ip_addr_t gw_addr); |
| void ecm_interface_dev_defunct_connections(struct net_device *dev); |
| void ecm_interface_node_connections_defunct(uint8_t *mac, int ip_version); |
| bool ecm_interface_tunnel_mtu_update(ip_addr_t saddr, ip_addr_t daddr, ecm_db_iface_type_t type, int32_t *mtu); |
| struct net_device *ecm_interface_get_and_hold_ipsec_tun_netdev(struct net_device *dev, struct sk_buff *skb, int32_t *interface_type); |
