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/*
* 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)
{
session_main_t *smm = vnet_get_session_main ();
vlib_main_t *vm = &vlib_global_main;
u32 my_thread_index = vm->thread_index;
session_event_t _e, *e = &_e;
svm_msg_q_ring_t *ring;
session_t *s0;
svm_msg_q_msg_t *msg;
svm_msg_q_t *mq;
int i, index;
mq = smm->wrk[my_thread_index].vpp_event_queue;
index = mq->q->head;
for (i = 0; i < mq->q->cursize; i++)
{
msg = (svm_msg_q_msg_t *) (&mq->q->data[0] + mq->q->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 == mq->q->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)
{
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;
index = mq->q->head;
for (i = 0; i < mq->q->cursize; i++)
{
msg = (svm_msg_q_msg_t *) (&mq->q->data[0] + mq->q->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) % mq->q->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:
*/
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