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authorFlorin Coras <fcoras@cisco.com>2017-03-01 08:17:34 -0800
committerDave Barach <openvpp@barachs.net>2017-03-04 01:22:36 +0000
commite04c29942af6a130591059679531c9ffa3d7237a (patch)
tree3dd68c33cb346820d098390a088d733e02e779e4 /src/vnet/session/node.c
parentfb38095d1c9d1b84850f345f0344f82b9ae2c375 (diff)
Cleanup URI code and TCP bugfixing
- Add CLI/API to enable session layer, by default it's disabled - Improve rcv wnd computation - Improvements to tx path - URI code cleanup - Builtin test tcp server - Improve src port allocation Change-Id: I2ace498e76a0771d4c31a8075cc14fe33d7dfa38 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vnet/session/node.c')
-rw-r--r--src/vnet/session/node.c57
1 files changed, 37 insertions, 20 deletions
diff --git a/src/vnet/session/node.c b/src/vnet/session/node.c
index e467f4e99e2..399077decb0 100644
--- a/src/vnet/session/node.c
+++ b/src/vnet/session/node.c
@@ -104,9 +104,13 @@ session_fifo_rx_i (vlib_main_t * vm, vlib_node_runtime_t * node,
snd_space0 = transport_vft->send_space (tc0);
snd_mss0 = transport_vft->send_mss (tc0);
+ /* Can't make any progress */
if (snd_space0 == 0 || svm_fifo_max_dequeue (s0->server_tx_fifo) == 0
|| snd_mss0 == 0)
- return 0;
+ {
+ vec_add1 (smm->evts_partially_read[thread_index], *e0);
+ return 0;
+ }
ASSERT (e0->enqueue_length > 0);
@@ -143,7 +147,12 @@ session_fifo_rx_i (vlib_main_t * vm, vlib_node_runtime_t * node,
if (PREDICT_FALSE (n_bufs < 0.9 * VLIB_FRAME_SIZE))
{
/* Keep track of how much we've dequeued and exit */
- e0->enqueue_length -= max_len_to_snd0 - left_to_snd0;
+ if (left_to_snd0 != max_len_to_snd0)
+ {
+ e0->enqueue_length -= max_len_to_snd0 - left_to_snd0;
+ vec_add1 (smm->evts_partially_read[thread_index], *e0);
+ }
+
return -1;
}
@@ -185,12 +194,13 @@ session_fifo_rx_i (vlib_main_t * vm, vlib_node_runtime_t * node,
t0->server_thread_index = s0->thread_index;
}
+ /* *INDENT-OFF* */
if (1)
{
- ELOG_TYPE_DECLARE (e) =
- {
- .format = "evt-dequeue: id %d length %d",.format_args =
- "i4i4",};
+ ELOG_TYPE_DECLARE (e) = {
+ .format = "evt-dequeue: id %d length %d",
+ .format_args = "i4i4",
+ };
struct
{
u32 data[2];
@@ -199,6 +209,7 @@ session_fifo_rx_i (vlib_main_t * vm, vlib_node_runtime_t * node,
ed->data[0] = e0->event_id;
ed->data[1] = e0->enqueue_length;
}
+ /* *INDENT-ON* */
len_to_deq0 = (left_to_snd0 < snd_mss0) ? left_to_snd0 : snd_mss0;
@@ -289,7 +300,7 @@ session_queue_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
{
session_manager_main_t *smm = vnet_get_session_manager_main ();
session_fifo_event_t *my_fifo_events, *e;
- u32 n_to_dequeue;
+ u32 n_to_dequeue, n_events;
unix_shared_memory_queue_t *q;
int n_tx_packets = 0;
u32 my_thread_index = vm->cpu_index;
@@ -309,14 +320,16 @@ session_queue_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
/* min number of events we can dequeue without blocking */
n_to_dequeue = q->cursize;
- if (n_to_dequeue == 0)
- return 0;
-
my_fifo_events = smm->fifo_events[my_thread_index];
- /* If we didn't manage to process previous events try going
+ if (n_to_dequeue == 0 && vec_len (my_fifo_events) == 0)
+ return 0;
+
+ /*
+ * If we didn't manage to process previous events try going
* over them again without dequeuing new ones.
- * XXX: Block senders to sessions that can't keep up */
+ */
+ /* XXX: Block senders to sessions that can't keep up */
if (vec_len (my_fifo_events) >= 100)
goto skip_dequeue;
@@ -338,8 +351,8 @@ session_queue_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
smm->fifo_events[my_thread_index] = my_fifo_events;
skip_dequeue:
-
- for (i = 0; i < n_to_dequeue; i++)
+ n_events = vec_len (my_fifo_events);
+ for (i = 0; i < n_events; i++)
{
svm_fifo_t *f0; /* $$$ prefetch 1 ahead maybe */
stream_session_t *s0;
@@ -354,8 +367,13 @@ skip_dequeue:
/* $$$ add multiple event queues, per vpp worker thread */
ASSERT (server_thread_index0 == my_thread_index);
- s0 = pool_elt_at_index (smm->sessions[my_thread_index],
- server_session_index0);
+ s0 = stream_session_get_if_valid (server_session_index0,
+ my_thread_index);
+ if (!s0)
+ {
+ clib_warning ("It's dead Jim!");
+ continue;
+ }
ASSERT (s0->thread_index == my_thread_index);
@@ -380,11 +398,11 @@ skip_dequeue:
done:
/* Couldn't process all events. Probably out of buffers */
- if (PREDICT_FALSE (i < n_to_dequeue))
+ if (PREDICT_FALSE (i < n_events))
{
session_fifo_event_t *partially_read =
smm->evts_partially_read[my_thread_index];
- vec_add (partially_read, &my_fifo_events[i], n_to_dequeue - i);
+ vec_add (partially_read, &my_fifo_events[i], n_events - i);
vec_free (my_fifo_events);
smm->fifo_events[my_thread_index] = partially_read;
smm->evts_partially_read[my_thread_index] = 0;
@@ -413,8 +431,7 @@ VLIB_REGISTER_NODE (session_queue_node) =
.n_errors = ARRAY_LEN (session_queue_error_strings),
.error_strings = session_queue_error_strings,
.n_next_nodes = SESSION_QUEUE_N_NEXT,
- /* .state = VLIB_NODE_STATE_DISABLED, enable on-demand? */
- /* edit / add dispositions here */
+ .state = VLIB_NODE_STATE_DISABLED,
.next_nodes =
{
[SESSION_QUEUE_NEXT_DROP] = "error-drop",