src/vnet/session/session_debug.c - fdio/vpp - Gitiles

 /*
  * Copyright (c) 2020 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.
  */

 #include <vnet/session/session_debug.h>
 #include <vnet/session/session.h>

 #if SESSION_DEBUG > 0

 session_dbg_main_t session_dbg_main;

 static clib_error_t *
 show_session_dbg_clock_cycles_fn (vlib_main_t * vm, unformat_input_t * input,
 				  vlib_cli_command_t * cmd)
 {
   u32 thread;

   if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
     return clib_error_return (0, "unknown input `%U'", format_unformat_error,
 			      input);

   for (thread = 0; thread < vec_len (session_dbg_main.wrk); thread++)
     {
       vlib_cli_output (vm, "Threads %u:\n", thread);
       session_dbg_evts_t *sdm = &session_dbg_main.wrk[thread];

 #define _(sym, disp, type, str) 								         \
   if(disp)								\
     {									\
       if (!type)							\
 	vlib_cli_output (vm, "\t %25s : %12lu ", str,                 	\
 	                 sdm->counters[SESS_Q_##sym].u64);		\
       else								\
 	vlib_cli_output (vm, "\t %25s : %12.3f ", str,                  \
 	                 sdm->counters[SESS_Q_##sym].f64);		\
     }
       foreach_session_events
 #undef _
     }
   return 0;
 }


 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (show_session_dbg_clock_cycles_command, static) =
 {
   .path = "show session dbg clock_cycles",
   .short_help = "show session dbg clock_cycles",
   .function = show_session_dbg_clock_cycles_fn,
 };
 /* *INDENT-ON* */


 static clib_error_t *
 clear_session_dbg_clock_cycles_fn (vlib_main_t * vm, unformat_input_t * input,
 				   vlib_cli_command_t * cmd)
 {
   session_dbg_evts_t *sde;
   u32 thread;

   if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
     return clib_error_return (0, "unknown input `%U'", format_unformat_error,
 			      input);

   for (thread = 0; thread < vec_len (session_dbg_main.wrk); thread++)
     {
       sde = &session_dbg_main.wrk[thread];
       clib_memset (sde, 0, sizeof (session_dbg_evts_t));
       sde->last_time = vlib_time_now (vlib_mains[thread]);
       sde->start_time = sde->last_time;
     }

   return 0;
 }


 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (clear_session_clock_cycles_command, static) =
 {
   .path = "clear session dbg clock_cycles",
   .short_help = "clear session dbg clock_cycles",
   .function = clear_session_dbg_clock_cycles_fn,
 };
 /* *INDENT-ON* */

 void
 session_debug_init (void)
 {
   vlib_thread_main_t *vtm = vlib_get_thread_main ();
   session_dbg_main_t *sdm = &session_dbg_main;
   u32 num_threads, thread;

   num_threads = vtm->n_vlib_mains;

   vec_validate_aligned (sdm->wrk, num_threads - 1, CLIB_CACHE_LINE_BYTES);
   for (thread = 0; thread < num_threads; thread++)
     {
       clib_memset (&sdm->wrk[thread], 0, sizeof (session_dbg_evts_t));
       sdm->wrk[thread].start_time = vlib_time_now (vlib_mains[thread]);
     }
 }
 #else
 void
 session_debug_init (void)
 {
 }
 #endif

 void
 dump_thread_0_event_queue (void)
 {
   vlib_main_t *vm = vlib_get_first_main ();
   u32 my_thread_index = vm->thread_index;
   session_event_t _e, *e = &_e;
   svm_msg_q_shared_queue_t *sq;
   svm_msg_q_ring_t *ring;
   session_t *s0;
   svm_msg_q_msg_t *msg;
   svm_msg_q_t *mq;
   int i, index;

   mq = session_main_get_vpp_event_queue (my_thread_index);
   sq = mq->q.shr;
   index = sq->head;

   for (i = 0; i < sq->cursize; i++)
     {
       msg = (svm_msg_q_msg_t *) (&sq->data[0] + sq->elsize * index);
       ring = svm_msg_q_ring (mq, msg->ring_index);
       clib_memcpy_fast (e, svm_msg_q_msg_data (mq, msg), ring->elsize);

       switch (e->event_type)
 	{
 	case SESSION_IO_EVT_TX:
 	  s0 = session_get_if_valid (e->session_index, my_thread_index);
 	  fformat (stdout, "[%04d] TX session %d\n", i, s0->session_index);
 	  break;

 	case SESSION_CTRL_EVT_CLOSE:
 	  s0 = session_get_from_handle (e->session_handle);
 	  fformat (stdout, "[%04d] disconnect session %d\n", i,
 		   s0->session_index);
 	  break;

 	case SESSION_IO_EVT_BUILTIN_RX:
 	  s0 = session_get_if_valid (e->session_index, my_thread_index);
 	  fformat (stdout, "[%04d] builtin_rx %d\n", i, s0->session_index);
 	  break;

 	case SESSION_CTRL_EVT_RPC:
 	  fformat (stdout, "[%04d] RPC call %llx with %llx\n",
 		   i, (u64) (uword) (e->rpc_args.fp),
 		   (u64) (uword) (e->rpc_args.arg));
 	  break;

 	default:
 	  fformat (stdout, "[%04d] unhandled event type %d\n",
 		   i, e->event_type);
 	  break;
 	}

       index++;

       if (index == sq->maxsize)
 	index = 0;
     }
 }

 static u8
 session_node_cmp_event (session_event_t * e, svm_fifo_t * f)
 {
   session_t *s;
   switch (e->event_type)
     {
     case SESSION_IO_EVT_RX:
     case SESSION_IO_EVT_TX:
     case SESSION_IO_EVT_BUILTIN_RX:
     case SESSION_IO_EVT_BUILTIN_TX:
     case SESSION_IO_EVT_TX_FLUSH:
       if (e->session_index == f->shr->master_session_index)
 	return 1;
       break;
     case SESSION_CTRL_EVT_CLOSE:
       break;
     case SESSION_CTRL_EVT_RPC:
       s = session_get_from_handle (e->session_handle);
       if (!s)
 	{
 	  clib_warning ("session has event but doesn't exist!");
 	  break;
 	}
       if (s->rx_fifo == f || s->tx_fifo == f)
 	return 1;
       break;
     default:
       break;
     }
   return 0;
 }

 u8
 session_node_lookup_fifo_event (svm_fifo_t * f, session_event_t * e)
 {
   svm_msg_q_shared_queue_t *sq;
   session_evt_elt_t *elt;
   session_worker_t *wrk;
   int i, index, found = 0;
   svm_msg_q_msg_t *msg;
   svm_msg_q_ring_t *ring;
   svm_msg_q_t *mq;
   u8 thread_index;

   ASSERT (e);
   thread_index = f->master_thread_index;
   wrk = session_main_get_worker (thread_index);

   /*
    * Search evt queue
    */
   mq = wrk->vpp_event_queue;
   sq = mq->q.shr;
   index = sq->head;
   for (i = 0; i < sq->cursize; i++)
     {
       msg = (svm_msg_q_msg_t *) (&sq->data[0] + sq->elsize * index);
       ring = svm_msg_q_ring (mq, msg->ring_index);
       clib_memcpy_fast (e, svm_msg_q_msg_data (mq, msg), ring->elsize);
       found = session_node_cmp_event (e, f);
       if (found)
 	return 1;
       index = (index + 1) % sq->maxsize;
     }
   /*
    * Search pending events vector
    */

   /* *INDENT-OFF* */
   clib_llist_foreach (wrk->event_elts, evt_list,
                       pool_elt_at_index (wrk->event_elts, wrk->new_head),
                       elt, ({
     found = session_node_cmp_event (&elt->evt, f);
     if (found)
       {
 	clib_memcpy_fast (e, &elt->evt, sizeof (*e));
 	goto done;
       }
   }));
   /* *INDENT-ON* */

   /* *INDENT-OFF* */
   clib_llist_foreach (wrk->event_elts, evt_list,
                       pool_elt_at_index (wrk->event_elts, wrk->old_head),
                       elt, ({
     found = session_node_cmp_event (&elt->evt, f);
     if (found)
       {
 	clib_memcpy_fast (e, &elt->evt, sizeof (*e));
 	goto done;
       }
   }));
   /* *INDENT-ON* */

 done:
   return found;
 }

 /*
  * fd.io coding-style-patch-verification: ON
  *
  * Local Variables:
  * eval: (c-set-style "gnu")
  * End:
  */
	/*
	* Copyright (c) 2020 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.
	*/

	#include <vnet/session/session_debug.h>
	#include <vnet/session/session.h>

	#if SESSION_DEBUG > 0

	session_dbg_main_t session_dbg_main;

	static clib_error_t *
	show_session_dbg_clock_cycles_fn (vlib_main_t * vm, unformat_input_t * input,
	vlib_cli_command_t * cmd)
	{
	u32 thread;

	if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
	return clib_error_return (0, "unknown input `%U'", format_unformat_error,
	input);

	for (thread = 0; thread < vec_len (session_dbg_main.wrk); thread++)
	{
	vlib_cli_output (vm, "Threads %u:\n", thread);
	session_dbg_evts_t *sdm = &session_dbg_main.wrk[thread];

	#define _(sym, disp, type, str) \
	if(disp) \
	{ \
	if (!type) \
	vlib_cli_output (vm, "\t %25s : %12lu ", str, \
	sdm->counters[SESS_Q_##sym].u64); \
	else \
	vlib_cli_output (vm, "\t %25s : %12.3f ", str, \
	sdm->counters[SESS_Q_##sym].f64); \
	}
	foreach_session_events
	#undef _
	}
	return 0;
	}


	/* INDENT-OFF */
	VLIB_CLI_COMMAND (show_session_dbg_clock_cycles_command, static) =
	{
	.path = "show session dbg clock_cycles",
	.short_help = "show session dbg clock_cycles",
	.function = show_session_dbg_clock_cycles_fn,
	};
	/* INDENT-ON */


	static clib_error_t *
	clear_session_dbg_clock_cycles_fn (vlib_main_t * vm, unformat_input_t * input,
	vlib_cli_command_t * cmd)
	{
	session_dbg_evts_t *sde;
	u32 thread;

	if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
	return clib_error_return (0, "unknown input `%U'", format_unformat_error,
	input);

	for (thread = 0; thread < vec_len (session_dbg_main.wrk); thread++)
	{
	sde = &session_dbg_main.wrk[thread];
	clib_memset (sde, 0, sizeof (session_dbg_evts_t));
	sde->last_time = vlib_time_now (vlib_mains[thread]);
	sde->start_time = sde->last_time;
	}

	return 0;
	}


	/* INDENT-OFF */
	VLIB_CLI_COMMAND (clear_session_clock_cycles_command, static) =
	{
	.path = "clear session dbg clock_cycles",
	.short_help = "clear session dbg clock_cycles",
	.function = clear_session_dbg_clock_cycles_fn,
	};
	/* INDENT-ON */

	void
	session_debug_init (void)
	{
	vlib_thread_main_t *vtm = vlib_get_thread_main ();
	session_dbg_main_t *sdm = &session_dbg_main;
	u32 num_threads, thread;

	num_threads = vtm->n_vlib_mains;

	vec_validate_aligned (sdm->wrk, num_threads - 1, CLIB_CACHE_LINE_BYTES);
	for (thread = 0; thread < num_threads; thread++)
	{
	clib_memset (&sdm->wrk[thread], 0, sizeof (session_dbg_evts_t));
	sdm->wrk[thread].start_time = vlib_time_now (vlib_mains[thread]);
	}
	}
	#else
	void
	session_debug_init (void)
	{
	}
	#endif

	void
	dump_thread_0_event_queue (void)
	{
	vlib_main_t *vm = vlib_get_first_main ();
	u32 my_thread_index = vm->thread_index;
	session_event_t _e, *e = &_e;
	svm_msg_q_shared_queue_t *sq;
	svm_msg_q_ring_t *ring;
	session_t *s0;
	svm_msg_q_msg_t *msg;
	svm_msg_q_t *mq;
	int i, index;

	mq = session_main_get_vpp_event_queue (my_thread_index);
	sq = mq->q.shr;
	index = sq->head;

	for (i = 0; i < sq->cursize; i++)
	{
	msg = (svm_msg_q_msg_t ) (&sq->data[0] + sq->elsize index);
	ring = svm_msg_q_ring (mq, msg->ring_index);
	clib_memcpy_fast (e, svm_msg_q_msg_data (mq, msg), ring->elsize);

	switch (e->event_type)
	{
	case SESSION_IO_EVT_TX:
	s0 = session_get_if_valid (e->session_index, my_thread_index);
	fformat (stdout, "[%04d] TX session %d\n", i, s0->session_index);
	break;

	case SESSION_CTRL_EVT_CLOSE:
	s0 = session_get_from_handle (e->session_handle);
	fformat (stdout, "[%04d] disconnect session %d\n", i,
	s0->session_index);
	break;

	case SESSION_IO_EVT_BUILTIN_RX:
	s0 = session_get_if_valid (e->session_index, my_thread_index);
	fformat (stdout, "[%04d] builtin_rx %d\n", i, s0->session_index);
	break;

	case SESSION_CTRL_EVT_RPC:
	fformat (stdout, "[%04d] RPC call %llx with %llx\n",
	i, (u64) (uword) (e->rpc_args.fp),
	(u64) (uword) (e->rpc_args.arg));
	break;

	default:
	fformat (stdout, "[%04d] unhandled event type %d\n",
	i, e->event_type);
	break;
	}

	index++;

	if (index == sq->maxsize)
	index = 0;
	}
	}

	static u8
	session_node_cmp_event (session_event_t * e, svm_fifo_t * f)
	{
	session_t *s;
	switch (e->event_type)
	{
	case SESSION_IO_EVT_RX:
	case SESSION_IO_EVT_TX:
	case SESSION_IO_EVT_BUILTIN_RX:
	case SESSION_IO_EVT_BUILTIN_TX:
	case SESSION_IO_EVT_TX_FLUSH:
	if (e->session_index == f->shr->master_session_index)
	return 1;
	break;
	case SESSION_CTRL_EVT_CLOSE:
	break;
	case SESSION_CTRL_EVT_RPC:
	s = session_get_from_handle (e->session_handle);
	if (!s)
	{
	clib_warning ("session has event but doesn't exist!");
	break;
	}
	if (s->rx_fifo == f \|\| s->tx_fifo == f)
	return 1;
	break;
	default:
	break;
	}
	return 0;
	}

	u8
	session_node_lookup_fifo_event (svm_fifo_t * f, session_event_t * e)
	{
	svm_msg_q_shared_queue_t *sq;
	session_evt_elt_t *elt;
	session_worker_t *wrk;
	int i, index, found = 0;
	svm_msg_q_msg_t *msg;
	svm_msg_q_ring_t *ring;
	svm_msg_q_t *mq;
	u8 thread_index;

	ASSERT (e);
	thread_index = f->master_thread_index;
	wrk = session_main_get_worker (thread_index);

	/*
	* Search evt queue
	*/
	mq = wrk->vpp_event_queue;
	sq = mq->q.shr;
	index = sq->head;
	for (i = 0; i < sq->cursize; i++)
	{
	msg = (svm_msg_q_msg_t ) (&sq->data[0] + sq->elsize index);
	ring = svm_msg_q_ring (mq, msg->ring_index);
	clib_memcpy_fast (e, svm_msg_q_msg_data (mq, msg), ring->elsize);
	found = session_node_cmp_event (e, f);
	if (found)
	return 1;
	index = (index + 1) % sq->maxsize;
	}
	/*
	* Search pending events vector
	*/

	/* INDENT-OFF */
	clib_llist_foreach (wrk->event_elts, evt_list,
	pool_elt_at_index (wrk->event_elts, wrk->new_head),
	elt, ({
	found = session_node_cmp_event (&elt->evt, f);
	if (found)
	{
	clib_memcpy_fast (e, &elt->evt, sizeof (*e));
	goto done;
	}
	}));
	/* INDENT-ON */

	/* INDENT-OFF */
	clib_llist_foreach (wrk->event_elts, evt_list,
	pool_elt_at_index (wrk->event_elts, wrk->old_head),
	elt, ({
	found = session_node_cmp_event (&elt->evt, f);
	if (found)
	{
	clib_memcpy_fast (e, &elt->evt, sizeof (*e));
	goto done;
	}
	}));
	/* INDENT-ON */

	done:
	return found;
	}

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