From 6f6311560380d0e992f710558e213df1b098ef94 Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Tue, 3 Oct 2017 08:20:21 -0700 Subject: Distributed Virtual Router Support A distributed virtual router works by attmpeting to switch a packet, but on failing to find a local consumer (i.e. the packet is destined to a locally attached host) then the packet is sent unmodified 'upstream' to where the rest of the 'distributed' router is present. When L3 switching a packet this means the L2 header must not be modifed. This patch adds a 'l2-bridge' object to the L3 FIB which re-injects packets from the L3 path back into the L2 path - use with extreme caution. Change-Id: I069724eb45956647d7980cbe40a80a788ee6ee82 Signed-off-by: Neale Ranns --- src/vnet/dpo/l2_bridge_dpo.h | 56 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 src/vnet/dpo/l2_bridge_dpo.h (limited to 'src/vnet/dpo/l2_bridge_dpo.h') diff --git a/src/vnet/dpo/l2_bridge_dpo.h b/src/vnet/dpo/l2_bridge_dpo.h new file mode 100644 index 00000000000..0a20dd79335 --- /dev/null +++ b/src/vnet/dpo/l2_bridge_dpo.h @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2016 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 __L2_BRIDGE_DPO_H__ +#define __L2_BRIDGE_DPO_H__ + +#include + +/** + * @brief + * The data-path object representing an L2 bridge. + * If a packet encounters an object of this type in the L3 data-path, it + * is injected back into the L2 bridge. + */ +typedef struct l2_bridge_dpo_t_ +{ + /** + * The Software interface index that the packets will output on + */ + u32 l2b_sw_if_index; + + /** + * number of locks. + */ + u16 l2b_locks; +} l2_bridge_dpo_t; + +extern void l2_bridge_dpo_add_or_lock (u32 sw_if_index, + dpo_id_t *dpo); + +extern void l2_bridge_dpo_module_init(void); + +/** + * @brief pool of all interface DPOs + */ +l2_bridge_dpo_t *l2_bridge_dpo_pool; + +static inline l2_bridge_dpo_t * +l2_bridge_dpo_get (index_t index) +{ + return (pool_elt_at_index(l2_bridge_dpo_pool, index)); +} + +#endif -- cgit 1.2.3-korg