session/tcp: support tx flush mark
For tcp this means that the last enqueued data goes out with a psh bit
set.
Change-Id: I29d357ecae6f02e748b59a7b799150ec73d14ba2
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/session/session_node.c b/src/vnet/session/session_node.c
index 1457668..f4e0eaa 100644
--- a/src/vnet/session/session_node.c
+++ b/src/vnet/session/session_node.c
@@ -572,9 +572,17 @@
ctx->transport_vft = transport_protocol_get_vft (tp);
ctx->tc = session_tx_get_transport (ctx, peek_data);
ctx->snd_mss = ctx->transport_vft->send_mss (ctx->tc);
- ctx->snd_space =
- transport_connection_snd_space (ctx->tc, vm->clib_time.last_cpu_time,
- ctx->snd_mss);
+
+ if (PREDICT_FALSE (e->event_type == SESSION_IO_EVT_TX_FLUSH))
+ {
+ if (ctx->transport_vft->flush_data)
+ ctx->transport_vft->flush_data (ctx->tc);
+ }
+
+ ctx->snd_space = transport_connection_snd_space (ctx->tc,
+ vm->
+ clib_time.last_cpu_time,
+ ctx->snd_mss);
if (ctx->snd_space == 0 || ctx->snd_mss == 0)
{
vec_add1 (wrk->pending_event_vector, *e);
@@ -828,6 +836,7 @@
e = &fifo_events[i];
switch (e->event_type)
{
+ case SESSION_IO_EVT_TX_FLUSH:
case FIFO_EVENT_APP_TX:
/* Don't try to send more that one frame per dispatch cycle */
if (n_tx_packets == VLIB_FRAME_SIZE)