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/*
* mdata.h - Buffer metadata change tracker
*
* 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 __included_mdata_h__
#define __included_mdata_h__
#include <vnet/vnet.h>
#include <vppinfra/hash.h>
#include <vppinfra/error.h>
/** @file buffer metadata change tracker definitions
*/
typedef struct
{
/** Node index, ~0 means no data from this run */
u32 node_index;
/** buffer metadata, cast to vlib_buffer_t as needed */
u8 mdata[128];
} mdata_t;
typedef struct
{
/** API message ID base */
u16 msg_id_base;
/** Per-thread buffer metadata before calling node fcn */
mdata_t **before_per_thread;
/** Spinlock to protect modified metadata by node */
clib_spinlock_t modify_lock;
/** Modified metadata by node */
mdata_t *modifies;
/* convenience */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
} mdata_main_t;
extern mdata_main_t mdata_main;
#endif /* __included_mdata_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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