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-rw-r--r--src/vnet/session/application_local.c10
-rw-r--r--src/vnet/session/session.c52
-rw-r--r--src/vnet/session/session.h7
-rw-r--r--src/vnet/session/session_debug.h28
-rw-r--r--src/vnet/session/session_node.c6
5 files changed, 68 insertions, 35 deletions
diff --git a/src/vnet/session/application_local.c b/src/vnet/session/application_local.c
index 8590d041600..d2a69dc282b 100644
--- a/src/vnet/session/application_local.c
+++ b/src/vnet/session/application_local.c
@@ -363,7 +363,7 @@ ct_session_connect_notify (session_t *ss, session_error_t err)
ss = session_get (ss_index, thread_index);
cs->session_type = ss->session_type;
cs->listener_handle = SESSION_INVALID_HANDLE;
- cs->session_state = SESSION_STATE_CONNECTING;
+ session_set_state (cs, SESSION_STATE_CONNECTING);
cs->app_wrk_index = client_wrk->wrk_index;
cs->connection_index = cct->c_c_index;
cct->c_s_index = cs->session_index;
@@ -379,7 +379,7 @@ ct_session_connect_notify (session_t *ss, session_error_t err)
goto connect_error;
}
- cs->session_state = SESSION_STATE_CONNECTING;
+ session_set_state (cs, SESSION_STATE_CONNECTING);
if (app_worker_connect_notify (client_wrk, cs, 0, opaque))
{
@@ -390,7 +390,7 @@ ct_session_connect_notify (session_t *ss, session_error_t err)
}
cs = session_get (cct->c_s_index, cct->c_thread_index);
- cs->session_state = SESSION_STATE_READY;
+ session_set_state (cs, SESSION_STATE_READY);
return 0;
@@ -701,7 +701,7 @@ ct_accept_one (u32 thread_index, u32 ho_index)
sct->c_is_ip4);
ss->connection_index = sct->c_c_index;
ss->listener_handle = listen_session_get_handle (ll);
- ss->session_state = SESSION_STATE_CREATED;
+ session_set_state (ss, SESSION_STATE_CREATED);
server_wrk = application_listener_select_worker (ll);
ss->app_wrk_index = server_wrk->wrk_index;
@@ -726,7 +726,7 @@ ct_accept_one (u32 thread_index, u32 ho_index)
cct->client_tx_fifo->refcnt++;
cct->segment_handle = sct->segment_handle;
- ss->session_state = SESSION_STATE_ACCEPTING;
+ session_set_state (ss, SESSION_STATE_ACCEPTING);
if (app_worker_accept_notify (server_wrk, ss))
{
ct_session_connect_notify (ss, SESSION_E_REFUSED);
diff --git a/src/vnet/session/session.c b/src/vnet/session/session.c
index 4c57b1ac9bb..a56ff9fe800 100644
--- a/src/vnet/session/session.c
+++ b/src/vnet/session/session.c
@@ -299,7 +299,7 @@ session_cleanup_half_open (session_handle_t ho_handle)
* session should be removed. */
if (ho->connection_index == ~0)
{
- ho->session_state = SESSION_STATE_CLOSED;
+ session_set_state (ho, SESSION_STATE_CLOSED);
return;
}
/* Migrated transports are no longer half-opens */
@@ -386,7 +386,7 @@ session_alloc_for_connection (transport_connection_t * tc)
s = session_alloc (thread_index);
s->session_type = session_type_from_proto_and_ip (tc->proto, tc->is_ip4);
- s->session_state = SESSION_STATE_CLOSED;
+ session_set_state (s, SESSION_STATE_CLOSED);
/* Attach transport to session and vice versa */
s->connection_index = tc->c_index;
@@ -894,7 +894,7 @@ session_stream_connect_notify (transport_connection_t * tc,
return app_worker_connect_notify (app_wrk, s, err, opaque);
s = session_alloc_for_connection (tc);
- s->session_state = SESSION_STATE_CONNECTING;
+ session_set_state (s, SESSION_STATE_CONNECTING);
s->app_wrk_index = app_wrk->wrk_index;
new_si = s->session_index;
new_ti = s->thread_index;
@@ -907,7 +907,7 @@ session_stream_connect_notify (transport_connection_t * tc,
}
s = session_get (new_si, new_ti);
- s->session_state = SESSION_STATE_READY;
+ session_set_state (s, SESSION_STATE_READY);
session_lookup_add_connection (tc, session_handle (s));
if (app_worker_connect_notify (app_wrk, s, SESSION_E_NONE, opaque))
@@ -1037,7 +1037,7 @@ session_dgram_connect_notify (transport_connection_t * tc,
*/
new_s = session_clone_safe (tc->s_index, old_thread_index);
new_s->connection_index = tc->c_index;
- new_s->session_state = SESSION_STATE_READY;
+ session_set_state (new_s, SESSION_STATE_READY);
new_s->flags |= SESSION_F_IS_MIGRATING;
if (!(tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP))
@@ -1091,11 +1091,11 @@ session_transport_closing_notify (transport_connection_t * tc)
* accept might be rejected */
if (s->session_state == SESSION_STATE_ACCEPTING)
{
- s->session_state = SESSION_STATE_TRANSPORT_CLOSING;
+ session_set_state (s, SESSION_STATE_TRANSPORT_CLOSING);
return;
}
- s->session_state = SESSION_STATE_TRANSPORT_CLOSING;
+ session_set_state (s, SESSION_STATE_TRANSPORT_CLOSING);
app_wrk = app_worker_get (s->app_wrk_index);
app_worker_close_notify (app_wrk, s);
}
@@ -1136,7 +1136,7 @@ session_transport_delete_notify (transport_connection_t * tc)
* because transport will soon be closed and closed sessions
* are assumed to have been removed from the lookup table */
session_lookup_del_session (s);
- s->session_state = SESSION_STATE_TRANSPORT_DELETED;
+ session_set_state (s, SESSION_STATE_TRANSPORT_DELETED);
session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT);
svm_fifo_dequeue_drop_all (s->tx_fifo);
break;
@@ -1147,7 +1147,7 @@ session_transport_delete_notify (transport_connection_t * tc)
* session is just removed because both transport and app have
* confirmed the close*/
session_lookup_del_session (s);
- s->session_state = SESSION_STATE_TRANSPORT_DELETED;
+ session_set_state (s, SESSION_STATE_TRANSPORT_DELETED);
session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT);
svm_fifo_dequeue_drop_all (s->tx_fifo);
session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_CLOSE);
@@ -1191,17 +1191,15 @@ session_transport_closed_notify (transport_connection_t * tc)
{
session_transport_closing_notify (tc);
svm_fifo_dequeue_drop_all (s->tx_fifo);
- s->session_state = SESSION_STATE_TRANSPORT_CLOSED;
+ session_set_state (s, SESSION_STATE_TRANSPORT_CLOSED);
}
/* If app close has not been received or has not yet resulted in
* a transport close, only mark the session transport as closed */
else if (s->session_state <= SESSION_STATE_CLOSING)
- {
- s->session_state = SESSION_STATE_TRANSPORT_CLOSED;
- }
+ session_set_state (s, SESSION_STATE_TRANSPORT_CLOSED);
/* If app also closed, switch to closed */
else if (s->session_state == SESSION_STATE_APP_CLOSED)
- s->session_state = SESSION_STATE_CLOSED;
+ session_set_state (s, SESSION_STATE_CLOSED);
app_wrk = app_worker_get_if_valid (s->app_wrk_index);
if (app_wrk)
@@ -1223,10 +1221,10 @@ session_transport_reset_notify (transport_connection_t * tc)
return;
if (s->session_state == SESSION_STATE_ACCEPTING)
{
- s->session_state = SESSION_STATE_TRANSPORT_CLOSING;
+ session_set_state (s, SESSION_STATE_TRANSPORT_CLOSING);
return;
}
- s->session_state = SESSION_STATE_TRANSPORT_CLOSING;
+ session_set_state (s, SESSION_STATE_TRANSPORT_CLOSING);
app_wrk = app_worker_get (s->app_wrk_index);
app_worker_reset_notify (app_wrk, s);
}
@@ -1243,12 +1241,12 @@ session_stream_accept_notify (transport_connection_t * tc)
return -1;
if (s->session_state != SESSION_STATE_CREATED)
return 0;
- s->session_state = SESSION_STATE_ACCEPTING;
+ session_set_state (s, SESSION_STATE_ACCEPTING);
if (app_worker_accept_notify (app_wrk, s))
{
/* On transport delete, no notifications should be sent. Unless, the
* accept is retried and successful. */
- s->session_state = SESSION_STATE_CREATED;
+ session_set_state (s, SESSION_STATE_CREATED);
return -1;
}
return 0;
@@ -1266,7 +1264,7 @@ session_stream_accept (transport_connection_t * tc, u32 listener_index,
s = session_alloc_for_connection (tc);
s->listener_handle = ((u64) thread_index << 32) | (u64) listener_index;
- s->session_state = SESSION_STATE_CREATED;
+ session_set_state (s, SESSION_STATE_CREATED);
if ((rv = app_worker_init_accepted (s)))
{
@@ -1310,7 +1308,7 @@ session_dgram_accept (transport_connection_t * tc, u32 listener_index,
}
session_lookup_add_connection (tc, session_handle (s));
- s->session_state = SESSION_STATE_ACCEPTING;
+ session_set_state (s, SESSION_STATE_ACCEPTING);
app_wrk = app_worker_get (s->app_wrk_index);
if ((rv = app_worker_accept_notify (app_wrk, s)))
@@ -1348,7 +1346,7 @@ session_open_cl (session_endpoint_cfg_t *rmt, session_handle_t *rsh)
app_wrk = app_worker_get (rmt->app_wrk_index);
s = session_alloc_for_connection (tc);
s->app_wrk_index = app_wrk->wrk_index;
- s->session_state = SESSION_STATE_OPENED;
+ session_set_state (s, SESSION_STATE_OPENED);
if (app_worker_init_connected (app_wrk, s))
{
session_free (s);
@@ -1543,7 +1541,7 @@ session_close (session_t * s)
/* App closed so stop propagating dequeue notifications */
svm_fifo_clear_deq_ntf (s->tx_fifo);
- s->session_state = SESSION_STATE_CLOSING;
+ session_set_state (s, SESSION_STATE_CLOSING);
session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_CLOSE);
}
@@ -1557,7 +1555,7 @@ session_reset (session_t * s)
return;
/* Drop all outstanding tx data */
svm_fifo_dequeue_drop_all (s->tx_fifo);
- s->session_state = SESSION_STATE_CLOSING;
+ session_set_state (s, SESSION_STATE_CLOSING);
session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_RESET);
}
@@ -1592,7 +1590,7 @@ session_transport_close (session_t * s)
if (s->session_state >= SESSION_STATE_APP_CLOSED)
{
if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED)
- s->session_state = SESSION_STATE_CLOSED;
+ session_set_state (s, SESSION_STATE_CLOSED);
/* If transport is already deleted, just free the session */
else if (s->session_state >= SESSION_STATE_TRANSPORT_DELETED)
session_free_w_fifos (s);
@@ -1605,7 +1603,7 @@ session_transport_close (session_t * s)
* delete notify. This will finally lead to the complete cleanup of the
* session.
*/
- s->session_state = SESSION_STATE_APP_CLOSED;
+ session_set_state (s, SESSION_STATE_APP_CLOSED);
transport_close (session_get_transport_proto (s), s->connection_index,
s->thread_index);
@@ -1620,13 +1618,13 @@ session_transport_reset (session_t * s)
if (s->session_state >= SESSION_STATE_APP_CLOSED)
{
if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED)
- s->session_state = SESSION_STATE_CLOSED;
+ session_set_state (s, SESSION_STATE_CLOSED);
else if (s->session_state >= SESSION_STATE_TRANSPORT_DELETED)
session_free_w_fifos (s);
return;
}
- s->session_state = SESSION_STATE_APP_CLOSED;
+ session_set_state (s, SESSION_STATE_APP_CLOSED);
transport_reset (session_get_transport_proto (s), s->connection_index,
s->thread_index);
}
diff --git a/src/vnet/session/session.h b/src/vnet/session/session.h
index 4fa9194077e..54740e64cf0 100644
--- a/src/vnet/session/session.h
+++ b/src/vnet/session/session.h
@@ -527,6 +527,13 @@ int session_tx_fifo_peek_bytes (transport_connection_t * tc, u8 * buffer,
u32 offset, u32 max_bytes);
u32 session_tx_fifo_dequeue_drop (transport_connection_t * tc, u32 max_bytes);
+always_inline void
+session_set_state (session_t *s, session_state_t session_state)
+{
+ s->session_state = session_state;
+ SESSION_EVT (SESSION_EVT_STATE_CHANGE, s);
+}
+
always_inline u32
transport_max_rx_enqueue (transport_connection_t * tc)
{
diff --git a/src/vnet/session/session_debug.h b/src/vnet/session/session_debug.h
index 588d58c790c..614ffc95a7b 100644
--- a/src/vnet/session/session_debug.h
+++ b/src/vnet/session/session_debug.h
@@ -28,6 +28,7 @@
_ (DISPATCH_START, CLOCKS_EVT_DBG, 1, "dispatch start") \
_ (DISPATCH_END, CLOCKS_EVT_DBG, 1, "dispatch end") \
_ (DSP_CNTRS, CLOCKS_EVT_DBG, 1, "dispatch counters") \
+ _ (STATE_CHANGE, SM, 1, "session state change") \
_ (FREE, SM, 1, "session free") \
_ (IO_EVT_COUNTS, COUNTS_EVT_DBG, 1, "io evt counts") \
_ (COUNTS, COUNTS_EVT_DBG, 1, "ctrl evt counts")
@@ -165,6 +166,32 @@ extern session_dbg_main_t session_dbg_main;
ed = ELOG_DATA (&vlib_global_main.elog_main, _e)
#if SESSION_SM
+#define SESSION_EVT_STATE_CHANGE_HANDLER(_s) \
+ { \
+ ELOG_TYPE_DECLARE (_e) = { \
+ .format = "%s: idx %u", \
+ .format_args = "t4i4", \
+ .n_enum_strings = 12, \
+ .enum_strings = { \
+ "created", \
+ "listening", \
+ "connecting", \
+ "accepting", \
+ "ready", \
+ "opened", \
+ "transport closing", \
+ "closing", \
+ "app closed", \
+ "transport closed", \
+ "closed", \
+ "transport deleted", \
+ }, \
+ }; \
+ DEC_SESSION_ETD (_s, _e, 2); \
+ ed->data[0] = _s->session_state; \
+ ed->data[1] = _s->session_index; \
+ }
+
#define SESSION_EVT_FREE_HANDLER(_s) \
{ \
ELOG_TYPE_DECLARE (_e) = { \
@@ -175,6 +202,7 @@ extern session_dbg_main_t session_dbg_main;
ed->data[0] = _s->session_index; \
}
#else
+#define SESSION_EVT_STATE_CHANGE_HANDLER(_s)
#define SESSION_EVT_FREE_HANDLER(_s)
#endif
diff --git a/src/vnet/session/session_node.c b/src/vnet/session/session_node.c
index c29e0590aa8..8f6503d2806 100644
--- a/src/vnet/session/session_node.c
+++ b/src/vnet/session/session_node.c
@@ -486,13 +486,13 @@ session_mq_accepted_reply_handler (session_worker_t *wrk,
/* Special handling for cut-through sessions */
if (!session_has_transport (s))
{
- s->session_state = SESSION_STATE_READY;
+ session_set_state (s, SESSION_STATE_READY);
ct_session_connect_notify (s, SESSION_E_NONE);
return;
}
old_state = s->session_state;
- s->session_state = SESSION_STATE_READY;
+ session_set_state (s, SESSION_STATE_READY);
if (!svm_fifo_is_empty_prod (s->rx_fifo))
app_worker_lock_and_send_event (app_wrk, s, SESSION_IO_EVT_RX);
@@ -501,7 +501,7 @@ session_mq_accepted_reply_handler (session_worker_t *wrk,
if (old_state >= SESSION_STATE_TRANSPORT_CLOSING)
{
app_worker_close_notify (app_wrk, s);
- s->session_state = old_state;
+ session_set_state (s, old_state);
return;
}
}