/* * l2tp.h : L2TPv3 tunnel support * * Copyright (c) 2013 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef __included_l2tp_h__ #define __included_l2tp_h__ #include <vlib/vlib.h> #include <vnet/ip/ip.h> #include <l2tp/packet.h> typedef struct { /* ip6 addresses */ ip6_address_t our_address; ip6_address_t client_address; /* l2tpv3 header parameters */ u64 local_cookie[2]; u64 remote_cookie; u32 local_session_id; u32 remote_session_id; /* tunnel interface */ u32 hw_if_index; u32 sw_if_index; /* fib index used for outgoing encapsulated packets */ u32 encap_fib_index; u8 l2tp_hdr_size; u8 l2_sublayer_present; u8 cookie_flags; /* in host byte order */ u8 admin_up; } l2t_session_t; typedef enum { L2T_LOOKUP_SRC_ADDRESS = 0, L2T_LOOKUP_DST_ADDRESS, L2T_LOOKUP_SESSION_ID, } ip6_to_l2_lookup_t; typedef struct { /* session pool */ l2t_session_t *sessions; /* ip6 -> l2 hash tables. Make up your minds, people... */ uword *session_by_src_address; uword *session_by_dst_address; uword *session_by_session_id; ip6_to_l2_lookup_t lookup_type; /* Counters */ vlib_combined_counter_main_t counter_main; /* vector of free l2tpv3 tunnel interfaces */ u32 *free_l2tpv3_tunnel_hw_if_indices; /* show device instance by real device instance */ u32 *dev_inst_by_real; /* convenience */ vlib_main_t *vlib_main; vnet_main_t *vnet_main; bool proto_registered; } l2t_main_t; /* Packet trace structure */ typedef struct { int is_user_to_network; u32 session_index; ip6_address_t our_address; ip6_address_t client_address; } l2t_trace_t; extern l2t_main_t l2t_main; extern vlib_node_registration_t l2t_encap_node; extern vlib_node_registration_t l2t_decap_node; extern vlib_node_registration_t l2t_decap_local_node; enum { SESSION_COUNTER_USER_TO_NETWORK = 0, SESSION_COUNTER_NETWORK_TO_USER, }; static inline u32 session_index_to_counter_index (u32 session_index, u32 counter_id) { return ((session_index << 1) + counter_id); } u8 *format_l2t_trace (u8 * s, va_list * args); typedef struct { /* Any per-interface config would go here */ } ip6_l2tpv3_config_t; uword unformat_pg_l2tp_header (unformat_input_t * input, va_list * args); void l2tp_encap_init (vlib_main_t * vm); int create_l2tpv3_ipv6_tunnel (l2t_main_t * lm, ip6_address_t * client_address, ip6_address_t * our_address, u32 local_session_id, u32 remote_session_id, u64 local_cookie, u64 remote_cookie, int l2_sublayer_present, u32 encap_fib_index, u32 * sw_if_index); int l2tpv3_set_tunnel_cookies (l2t_main_t * lm, u32 sw_if_index, u64 new_local_cookie, u64 new_remote_cookie); int l2tpv3_interface_enable_disable (vnet_main_t * vnm, u32 sw_if_index, int enable_disable); #endif /* __included_l2tp_h__ */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */