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authorFlorin Coras <fcoras@cisco.com>2019-04-02 19:03:23 -0700
committerDamjan Marion <dmarion@me.com>2019-04-04 10:01:52 +0000
commit070fd4b046265e7aabe3f9e226e769441db18d79 (patch)
tree854602b66086d7d311bbdc2d17533bba783aae68 /src/vnet/tcp/tcp_input.c
parentdeb8af6eb71f9ad951137ee6e84e971c3ab23ec4 (diff)
tcp: shorten wait in fin-wait-1 with fin rcvd
Change-Id: Ifddc32ab3da0e691ac3df74ff26e19f6fa00fef7 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vnet/tcp/tcp_input.c')
-rw-r--r--src/vnet/tcp/tcp_input.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index 9ac2d854ba5..49270314924 100644
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -2785,6 +2785,10 @@ tcp46_rcv_process_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
max_dequeue = transport_max_tx_dequeue (&tc0->connection);
if (max_dequeue <= tc0->burst_acked)
tcp_send_fin (tc0);
+ /* If a fin was received and data was acked extend wait */
+ else if ((tc0->flags & TCP_CONN_FINRCVD) && tc0->bytes_acked)
+ tcp_timer_update (tc0, TCP_TIMER_WAITCLOSE,
+ TCP_CLOSEWAIT_TIME);
}
/* If FIN is ACKed */
else if (tc0->snd_una == tc0->snd_nxt)
@@ -2954,19 +2958,22 @@ tcp46_rcv_process_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
break;
case TCP_STATE_FIN_WAIT_1:
tc0->rcv_nxt += 1;
- /* If data is outstanding stay in FIN_WAIT_1 and try to finish
- * sending it. */
+
if (tc0->flags & TCP_CONN_FINPNDG)
{
+ /* If data is outstanding, stay in FIN_WAIT_1 and try to finish
+ * sending it. Since we already received a fin, do not wait
+ * for too long. */
tc0->flags |= TCP_CONN_FINRCVD;
+ tcp_timer_update (tc0, TCP_TIMER_WAITCLOSE, TCP_CLOSEWAIT_TIME);
}
else
{
tcp_connection_set_state (tc0, TCP_STATE_CLOSING);
tcp_program_ack (wrk, tc0);
+ /* Wait for ACK for our FIN but not forever */
+ tcp_timer_update (tc0, TCP_TIMER_WAITCLOSE, TCP_2MSL_TIME);
}
- /* Wait for ACK for our FIN but not forever */
- tcp_timer_update (tc0, TCP_TIMER_WAITCLOSE, TCP_2MSL_TIME);
break;
case TCP_STATE_FIN_WAIT_2:
/* Got FIN, send ACK! Be more aggressive with resource cleanup */