2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #ifndef __MPLS_DISP_DPO_H__
17 #define __MPLS_DISP_DPO_H__
19 #include <vnet/vnet.h>
20 #include <vnet/mpls/packet.h>
21 #include <vnet/dpo/dpo.h>
22 #include <vnet/mfib/mfib_types.h>
25 * A representation of an MPLS label for imposition in the data-path
27 typedef struct mpls_disp_dpo_t
30 * Next DPO in the graph
35 * The protocol of the payload/packets that are being encapped
37 dpo_proto_t mdd_payload_proto;
40 * RPF-ID (if this is an mcast disposition)
42 fib_rpf_id_t mdd_rpf_id;
45 * Number of locks/users of the label
51 * @brief Assert that the MPLS label object is less than a cache line in size.
52 * Should this get any bigger then we will need to reconsider how many labels
53 * can be pushed in one object.
55 _Static_assert((sizeof(mpls_disp_dpo_t) <= CLIB_CACHE_LINE_BYTES),
56 "MPLS Disposition DPO is larger than one cache line.");
59 * @brief Create an MPLS label object
61 * @param payload_proto The ptocool of the payload packets that will
62 * be imposed with this label header.
63 * @param dpo The parent of the created MPLS label object
65 extern index_t mpls_disp_dpo_create(dpo_proto_t payload_proto,
69 extern u8* format_mpls_disp_dpo(u8 *s, va_list *args);
73 * Encapsulation violation for fast data-path access
75 extern mpls_disp_dpo_t *mpls_disp_dpo_pool;
77 static inline mpls_disp_dpo_t *
78 mpls_disp_dpo_get (index_t index)
80 return (pool_elt_at_index(mpls_disp_dpo_pool, index));
83 extern void mpls_disp_dpo_module_init(void);