session_debug.h

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/*
 * Copyright (c) 2017 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 SRC_VNET_SESSION_SESSION_DEBUG_H_
#define SRC_VNET_SESSION_SESSION_DEBUG_H_

#include <vnet/session/transport.h>
#include <vnet/session/session.h>
#include <vlib/vlib.h>

#define foreach_session_dbg_evt         \
  _(ENQ, "enqueue")                     \
  _(DEQ, "dequeue")

typedef enum _session_evt_dbg
{
#define _(sym, str) SESSION_EVT_##sym,
  foreach_session_dbg_evt
#undef _
} session_evt_dbg_e;

#if TRANSPORT_DEBUG

#define DEC_SESSION_ETD(_s, _e, _size)                                  \
  struct                                                                \
  {                                                                     \
    u32 data[_size];                                                    \
  } * ed;                                                               \
  transport_proto_vft_t *vft =                                          \
      session_get_transport_vft (_s->session_type);                     \
  transport_connection_t *_tc =                                         \
      vft->get_connection (_s->connection_index, _s->thread_index);     \
  ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main,                    \
                        _e, _tc->elog_track)


#define SESSION_EVT_DEQ_HANDLER(_s, _body)                              \
{                                                                       \
  ELOG_TYPE_DECLARE (_e) =                                              \
  {                                                                     \
    .format = "deq: id %d len %d rd %d wnd %d",                         \
    .format_args = "i4i4i4i4",                                          \
  };                                                                    \
  DEC_SESSION_ETD(_s, _e, 4);                                           \
  do { _body; } while (0);                                              \
}

#define SESSION_EVT_ENQ_HANDLER(_s, _body)                              \
{                                                                       \
  ELOG_TYPE_DECLARE (_e) =                                              \
  {                                                                     \
    .format = "enq: id %d length %d",                                   \
    .format_args = "i4i4",                                              \
  };                                                                    \
  DEC_SESSION_ETD(_s, _e, 2);                                           \
  do { _body; } while (0);                                              \
}

#define CONCAT_HELPER(_a, _b) _a##_b
#define CC(_a, _b) CONCAT_HELPER(_a, _b)

#define SESSION_EVT_DBG(_s, _evt, _body) CC(_evt, _HANDLER)(_s, _body)

#else
#define SESSION_EVT_DBG(_s, _evt, _body)
#endif

#endif /* SRC_VNET_SESSION_SESSION_DEBUG_H_ */
/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */