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-rw-r--r--src/vnet/session/session_debug.c281
1 files changed, 281 insertions, 0 deletions
diff --git a/src/vnet/session/session_debug.c b/src/vnet/session/session_debug.c
new file mode 100644
index 00000000000..33d1dc57196
--- /dev/null
+++ b/src/vnet/session/session_debug.c
@@ -0,0 +1,281 @@
+/*
+ * 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->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:
+ */