/* * Copyright (c) 2017 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 __ABF_H__ #define __ABF_H__ #include <vnet/fib/fib_node.h> #define ABF_PLUGIN_VERSION_MAJOR 1 #define ABF_PLUGIN_VERSION_MINOR 0 /** * An ACL based Forwarding 'policy'. * This comprises the ACL index to match against and the forwarding * path to take if the match is successful. * * ABF policies are then 'attached' to interfaces. An input feature * will run through the list of policies a match will divert the packet, * if all miss then we continues down the interface's feature arc */ typedef struct abf_policy_t_ { /** * Linkage into the FIB graph */ fib_node_t ap_node; /** * ACL index to match */ u32 ap_acl; /** * The path-list describing how to forward in case of a match */ fib_node_index_t ap_pl; /** * Sibling index on the path-list */ u32 ap_sibling; /** * The policy ID - as configured by the client */ u32 ap_id; } abf_policy_t; /** * Get an ABF object from its VPP index */ extern abf_policy_t *abf_policy_get (index_t index); /** * Find a ABF object from the client's policy ID * * @param policy_id Client's defined policy ID * @return VPP's object index */ extern index_t abf_policy_find (u32 policy_id); /** * The FIB node type for ABF policies */ extern fib_node_type_t abf_policy_fib_node_type; /** * Create or update an ABF Policy * * @param policy_id User defined Policy ID * @param acl_index The ACL the policy with match on * @param rpaths The set of paths to add to the forwarding set */ extern void abf_policy_update (u32 policy_id, u32 acl_index, const fib_route_path_t * rpaths); /** * Delete paths from an ABF Policy. If no more paths exist, the policy * is deleted. * * @param policy_id User defined Policy ID * @param rpaths The set of paths to forward remove */ extern int abf_policy_delete (u32 policy_id, const fib_route_path_t * rpaths); /** * Callback function invoked during a walk of all policies */ typedef int (*abf_policy_walk_cb_t) (index_t index, void *ctx); /** * Walk/visit each of the ABF policies */ extern void abf_policy_walk (abf_policy_walk_cb_t cb, void *ctx); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */ #endif