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-rw-r--r--src/vnet/session/session_node.c15
-rw-r--r--src/vnet/session/transport.h13
-rw-r--r--src/vnet/tcp/tcp_output.c1
3 files changed, 26 insertions, 3 deletions
diff --git a/src/vnet/session/session_node.c b/src/vnet/session/session_node.c
index 1d7ebf9f11a..bebabd3d68e 100644
--- a/src/vnet/session/session_node.c
+++ b/src/vnet/session/session_node.c
@@ -1188,8 +1188,14 @@ session_tx_maybe_reschedule (session_worker_t * wrk,
svm_fifo_unset_event (s->tx_fifo);
if (svm_fifo_max_dequeue_cons (s->tx_fifo) > ctx->sp.tx_offset)
- if (svm_fifo_set_event (s->tx_fifo))
- session_evt_add_head_old (wrk, elt);
+ {
+ if (svm_fifo_set_event (s->tx_fifo))
+ session_evt_add_head_old (wrk, elt);
+ }
+ else
+ {
+ transport_connection_deschedule (ctx->tc);
+ }
}
always_inline int
@@ -1246,6 +1252,11 @@ session_tx_fifo_read_and_snd_i (session_worker_t * wrk,
}
}
+ /* Connection previously descheduled because it had no data to send.
+ * Clear descheduled flag and reset pacer if in use */
+ if (transport_connection_is_descheduled (ctx->tc))
+ transport_connection_clear_descheduled (ctx->tc);
+
transport_connection_snd_params (ctx->tc, &ctx->sp);
if (!ctx->sp.snd_space)
diff --git a/src/vnet/session/transport.h b/src/vnet/session/transport.h
index 2cfec06ec94..549f17957cc 100644
--- a/src/vnet/session/transport.h
+++ b/src/vnet/session/transport.h
@@ -327,6 +327,19 @@ transport_connection_is_tx_paced (transport_connection_t * tc)
return (tc->flags & TRANSPORT_CONNECTION_F_IS_TX_PACED);
}
+/**
+ * Clear descheduled flag and update pacer if needed
+ *
+ * To add session to scheduler use @ref transport_connection_reschedule
+ */
+always_inline void
+transport_connection_clear_descheduled (transport_connection_t *tc)
+{
+ tc->flags &= ~TRANSPORT_CONNECTION_F_DESCHED;
+ if (transport_connection_is_tx_paced (tc))
+ transport_connection_tx_pacer_reset_bucket (tc, 0 /* bucket */);
+}
+
u8 *format_transport_pacer (u8 * s, va_list * args);
/**
diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c
index 5647b8f6737..55fa6d1b5d8 100644
--- a/src/vnet/tcp/tcp_output.c
+++ b/src/vnet/tcp/tcp_output.c
@@ -321,7 +321,6 @@ tcp_update_burst_snd_vars (tcp_connection_t * tc)
if (tc->snd_una == tc->snd_nxt)
{
tcp_cc_event (tc, TCP_CC_EVT_START_TX);
- tcp_connection_tx_pacer_reset (tc, tc->cwnd, TRANSPORT_PACER_MIN_BURST);
}
if (tc->flags & TCP_CONN_PSH_PENDING)