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Diffstat (limited to 'src/vnet/mpls/mpls_tunnel.h')
-rw-r--r-- | src/vnet/mpls/mpls_tunnel.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/vnet/mpls/mpls_tunnel.h b/src/vnet/mpls/mpls_tunnel.h new file mode 100644 index 00000000..285817c3 --- /dev/null +++ b/src/vnet/mpls/mpls_tunnel.h @@ -0,0 +1,137 @@ +/* + * 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> +#include <vnet/fib/fib_path_ext.h> + +typedef enum mpls_tunnel_attribute_t_ +{ + MPLS_TUNNEL_ATTRIBUTE_FIRST = 0, + /** + * @brief The tunnel is L2 only + */ + MPLS_TUNNEL_ATTRIBUTE_L2 = MPLS_TUNNEL_ATTRIBUTE_FIRST, + /** + * @brief The tunnel has an underlying multicast LSP + */ + MPLS_TUNNEL_ATTRIBUTE_MCAST, + MPLS_TUNNEL_ATTRIBUTE_LAST = MPLS_TUNNEL_ATTRIBUTE_MCAST, +} mpls_tunnel_attribute_t; + +#define MPLS_TUNNEL_ATTRIBUTES { \ + [MPLS_TUNNEL_ATTRIBUTE_MCAST] = "multicast", \ + [MPLS_TUNNEL_ATTRIBUTE_L2] = "L2", \ +} +#define FOR_EACH_MPLS_TUNNEL_ATTRIBUTE(_item) \ + for (_item = MPLS_TUNNEL_ATTRIBUTE_FIRST; \ + _item <= MPLS_TUNNEL_ATTRIBUTE_LAST; \ + _item++) + +typedef enum mpls_tunnel_flag_t_ { + MPLS_TUNNEL_FLAG_NONE = 0, + MPLS_TUNNEL_FLAG_L2 = (1 << MPLS_TUNNEL_ATTRIBUTE_L2), + MPLS_TUNNEL_FLAG_MCAST = (1 << MPLS_TUNNEL_ATTRIBUTE_MCAST), +} __attribute__ ((packed)) mpls_tunnel_flags_t; + + +/** + * @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 Tunnel flags + */ + mpls_tunnel_flags_t mt_flags; + + /** + * @brief If the tunnel is an L2 tunnel, this is the link type ETHERNET + * load-balance + */ + dpo_id_t mt_l2_lb; + + /** + * @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; + + /** + * @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; + + /** + * A vector of path extensions o hold the label stack for each path + */ + fib_path_ext_list_t mt_path_exts; +} mpls_tunnel_t; + +/** + * @brief Create a new MPLS tunnel + * @return the SW Interface index of the newly created tuneel + */ +extern u32 vnet_mpls_tunnel_create (u8 l2_only, + u8 is_multicast); + +/** + * @brief Add a path to an MPLS tunnel + */ +extern void vnet_mpls_tunnel_path_add (u32 sw_if_index, + fib_route_path_t *rpath); + +/** + * @brief remove a path from a tunnel. + * @return the number of remaining paths. 0 implies the tunnel can be deleted + */ +extern int vnet_mpls_tunnel_path_remove (u32 sw_if_index, + fib_route_path_t *rpath); + +/** + * @brief Delete an MPLS tunnel + */ +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 |