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/*
* 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
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