/* * Copyright (c) 2015 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 __MPLS_TUNNEL_H__ #define __MPLS_TUNNEL_H__ #include <vnet/mpls/mpls.h> /** * @brief A uni-directional MPLS tunnel */ typedef struct mpls_tunnel_t_ { /** * @brief The tunnel hooks into the FIB control plane graph. */ fib_node_t mt_node; /** * @brief If the tunnel is an L2 tunnel, this is the link type ETHERNET * adjacency */ adj_index_t mt_l2_adj; /** * @brief on a L2 tunnel this is the VLIB arc from the L2-tx to the l2-midchain */ u32 mt_l2_tx_arc; /** * @brief The path-list over which the tunnel's destination is reachable */ fib_node_index_t mt_path_list; /** * @brief sibling index on the path-list so notifications are received. */ u32 mt_sibling_index; /** * @brief The Label stack to apply to egress packets */ mpls_label_t *mt_label_stack; /** * @brief Flag to indicate the tunnel is only for L2 traffic, that is * this tunnel belongs in a bridge domain. */ u8 mt_l2_only; /** * @brief The HW interface index of the tunnel interfaces */ u32 mt_hw_if_index; /** * @brief The SW interface index of the tunnel interfaces */ u32 mt_sw_if_index; } mpls_tunnel_t; /** * @brief Create a new MPLS tunnel */ extern void vnet_mpls_tunnel_add (fib_route_path_t *rpath, mpls_label_t *label_stack, u8 l2_only, u32 *sw_if_index); extern void vnet_mpls_tunnel_del (u32 sw_if_index); extern const mpls_tunnel_t *mpls_tunnel_get(u32 index); /** * @brief Callback function invoked while walking MPLS tunnels */ typedef void (*mpls_tunnel_walk_cb_t)(u32 index, void *ctx); /** * @brief Walk all the MPLS tunnels */ extern void mpls_tunnel_walk(mpls_tunnel_walk_cb_t cb, void *ctx); #endif