/* * Copyright (c) 2019 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 __PW_CW_DPO_H__ #define __PW_CW_DPO_H__ #include <vnet/vnet.h> #include <vnet/mpls/packet.h> #include <vnet/dpo/dpo.h> /** * A Psuedo Wire Control Word is 4 bytes */ typedef u32 pw_cw_t; /** * A representation of a Psuedo Wire Control Word pop DPO */ typedef struct pw_cw_dpo_t { /** * Next DPO in the graph */ dpo_id_t pwcw_parent; /** * Number of locks/users of the label */ u16 pwcw_locks; } pw_cw_dpo_t; /** * @brief Assert that the MPLS label object is less than a cache line in size. * Should this get any bigger then we will need to reconsider how many labels * can be pushed in one object. */ STATIC_ASSERT_SIZEOF(pw_cw_dpo_t, 2 * sizeof(u64)); /* #define STATIC_ASSERT_ALIGNOF(d, s) \ */ /* STATIC_ASSERT (alignof (d) == sizeof(s), "Align of " #d " must be " # s " bytes") */ /* STATIC_ASSERT_AIGNOF(pw_cw_dpo_t, u64); */ /** * @brief Create an PW CW pop * * @param parent The parent of the created MPLS label object * @param dpo The PW CW DPO created */ extern void pw_cw_dpo_create(const dpo_id_t *paremt, dpo_id_t *dpo); extern u8* format_pw_cw_dpo(u8 *s, va_list *args); /* * Encapsulation violation for fast data-path access */ extern pw_cw_dpo_t *pw_cw_dpo_pool; static inline pw_cw_dpo_t * pw_cw_dpo_get (index_t index) { return (pool_elt_at_index(pw_cw_dpo_pool, index)); } extern void pw_cw_dpo_module_init(void); #endif