83e73709c3
This feature enables the use of the classifier and ip-in-out-acl nodes to redirect matching sessions via arbitrary fib paths instead of relying on additional VRFs. Type: feature Change-Id: Ia59d35481c2555aec96c806b62bf29671abb295a Signed-off-by: Benoît Ganne <bganne@cisco.com>
125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
/* Copyright (c) 2021-2022 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License. */
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#include <vlib/vlib.h>
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#include <vnet/fib/fib_api.h>
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#include <vnet/ip/ip_format_fns.h>
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#include <vlibmemory/api.h>
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#include <vlibapi/api.h>
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#define REPLY_MSG_ID_BASE vl_api_ip_sesion_redirect_msg_id_base
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#include <vlibapi/api_helper_macros.h>
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#include "ip_session_redirect.api_enum.h"
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#include "ip_session_redirect.api_types.h"
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#include "ip_session_redirect.h"
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static u16 vl_api_ip_sesion_redirect_msg_id_base;
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static int
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vl_api_ip_session_redirect_add (u32 table_index, u32 opaque_index,
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vl_api_fib_path_nh_proto_t proto, int is_punt,
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u8 *match, int match_len,
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vl_api_fib_path_t *paths, int n_paths)
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{
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vlib_main_t *vm = vlib_get_main ();
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fib_route_path_t *paths_ = 0;
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dpo_proto_t proto_;
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u8 *match_ = 0;
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int rv = 0;
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if (n_paths <= 0)
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{
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rv = VNET_API_ERROR_NO_PATHS_IN_ROUTE;
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goto err0;
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}
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for (int i = 0; i < n_paths; i++)
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{
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fib_route_path_t path;
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if ((rv = fib_api_path_decode (&paths[i], &path)))
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goto err1;
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vec_add1 (paths_, path);
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}
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if (~0 == proto)
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proto_ = paths_[0].frp_proto;
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else
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fib_api_path_nh_proto_to_dpo (ntohl (proto), &proto_);
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vec_add (match_, match, match_len);
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rv = ip_session_redirect_add (vm, ntohl (table_index), ntohl (opaque_index),
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proto_, is_punt, match_, paths_);
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vec_free (match_);
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err1:
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vec_free (paths_);
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err0:
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return rv;
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}
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static void
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vl_api_ip_session_redirect_add_t_handler (vl_api_ip_session_redirect_add_t *mp)
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{
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vl_api_ip_session_redirect_add_reply_t *rmp;
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int rv = vl_api_ip_session_redirect_add (
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mp->table_index, mp->opaque_index, ~0 /* proto */, mp->is_punt, mp->match,
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mp->match_len, mp->paths, mp->n_paths);
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REPLY_MACRO (VL_API_IP_SESSION_REDIRECT_ADD_REPLY)
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}
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static void
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vl_api_ip_session_redirect_add_v2_t_handler (
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vl_api_ip_session_redirect_add_v2_t *mp)
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{
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vl_api_ip_session_redirect_add_v2_reply_t *rmp;
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int rv = vl_api_ip_session_redirect_add (
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mp->table_index, mp->opaque_index, mp->proto, mp->is_punt, mp->match,
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mp->match_len, mp->paths, mp->n_paths);
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REPLY_MACRO (VL_API_IP_SESSION_REDIRECT_ADD_V2_REPLY)
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}
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static void
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vl_api_ip_session_redirect_del_t_handler (vl_api_ip_session_redirect_del_t *mp)
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{
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vlib_main_t *vm = vlib_get_main ();
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vl_api_ip_session_redirect_del_reply_t *rmp;
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u8 *match = 0;
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int rv;
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vec_add (match, mp->match, mp->match_len);
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rv = ip_session_redirect_del (vm, ntohl (mp->table_index), match);
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vec_free (match);
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REPLY_MACRO (VL_API_IP_SESSION_REDIRECT_DEL_REPLY);
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}
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#include "ip_session_redirect.api.c"
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static clib_error_t *
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ip_session_redirect_plugin_api_hookup (vlib_main_t *vm)
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{
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vl_api_ip_sesion_redirect_msg_id_base = setup_message_id_table ();
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return 0;
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}
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VLIB_API_INIT_FUNCTION (ip_session_redirect_plugin_api_hookup);
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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