d7b306657d
A handy tool in case you need to know which metadata will be changed when a packet visits a certain node. Reflect metadata changes into format functions used by the vpp-specific wireshark dissector. Type: feature Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: I96fe8a24db4082bb29fe2a33cc522e8616a3a1bb
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
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/*
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* mdata.h - Buffer metadata change tracker
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*
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* Copyright (c) 2019 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __included_mdata_h__
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#define __included_mdata_h__
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#include <vnet/vnet.h>
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#include <vppinfra/hash.h>
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#include <vppinfra/error.h>
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/** @file buffer metadata change tracker definitions
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*/
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typedef struct
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{
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/** Node index, ~0 means no data from this run */
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u32 node_index;
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/** buffer metadata, cast to vlib_buffer_t as needed */
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u8 mdata[128];
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} mdata_t;
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typedef struct
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{
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/** API message ID base */
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u16 msg_id_base;
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/** Per-thread buffer metadata before calling node fcn */
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mdata_t **before_per_thread;
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/** Spinlock to protect modified metadata by node */
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clib_spinlock_t modify_lock;
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/** Modified metadata by node */
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mdata_t *modifies;
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/* convenience */
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vlib_main_t *vlib_main;
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vnet_main_t *vnet_main;
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} mdata_main_t;
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extern mdata_main_t mdata_main;
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#endif /* __included_mdata_h__ */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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