From 0f26c5a0138ac86d7ebd197c31a09d8d624c35fe Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Wed, 1 Mar 2017 15:12:11 -0800 Subject: MPLS Mcast 1 - interface-DPO Used in the Data-plane to change a packet's input interface 2 - MPLS multicast FIB entry Same as a unicast entry but it links to a replicate not a load-balance DPO 3 - Multicast MPLS tunnel Update MPLS tunnels to use a FIB path-list to describe the endpoint[s]. Use the path-list to generate the forwarding chain (DPOs) to link to . 4 - Resolve a path via a local label (of an mLDP LSP) For IP multicast entries to use an LSP in the replication list, we need to decribe the 'resolve-via-label' where the label is that of a multicast LSP. 5 - MPLS disposition path sets RPF-ID For a interface-less LSP (i.e. mLDP not RSVP-TE) at the tail of the LSP we still need to perform an RPF check. An MPLS disposition DPO performs the MPLS pop validation checks and sets the RPF-ID in the packet. 6 - RPF check with per-entry RPF-ID An RPF-ID is used instead of a real interface SW if index in the case the IP traffic arrives from an LSP that does not have an associated interface. Change-Id: Ib92e177be919147bafeb599729abf3d1abc2f4b3 Signed-off-by: Neale Ranns --- src/vnet/dpo/interface_dpo.h | 67 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 src/vnet/dpo/interface_dpo.h (limited to 'src/vnet/dpo/interface_dpo.h') diff --git a/src/vnet/dpo/interface_dpo.h b/src/vnet/dpo/interface_dpo.h new file mode 100644 index 00000000000..1538dfbbf06 --- /dev/null +++ b/src/vnet/dpo/interface_dpo.h @@ -0,0 +1,67 @@ +/* + * 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. + */ +/** + * @brief + * The data-path object representing interfaceing the packet, i.e. it's for-us + */ + +#ifndef __INTERFACE_DPO_H__ +#define __INTERFACE_DPO_H__ + +#include + +typedef struct interface_dpo_t_ +{ + /** + * The Software interface index that the packets will be given + * as the ingress/rx interface + */ + u32 ido_sw_if_index; + + /** + * next VLIB node. A '-input' node. + */ + u32 ido_next_node; + + /** + * DPO protocol that the packets will have as they 'ingress' + * on this interface + */ + dpo_proto_t ido_proto; + + /** + * number of locks. + */ + u16 ido_locks; +} interface_dpo_t; + +extern void interface_dpo_add_or_lock (dpo_proto_t proto, + u32 sw_if_index, + dpo_id_t *dpo); + +extern void interface_dpo_module_init(void); + +/** + * @brief pool of all interface DPOs + */ +interface_dpo_t *interface_dpo_pool; + +static inline interface_dpo_t * +interface_dpo_get (index_t index) +{ + return (pool_elt_at_index(interface_dpo_pool, index)); +} + +#endif -- cgit 1.2.3-korg