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authorFlorin Coras <fcoras@cisco.com>2019-09-12 18:49:44 -0700
committerFlorin Coras <fcoras@cisco.com>2019-09-12 18:54:32 -0700
commit321cfa5fcb8f347329a5296e2024ef0e6cef319f (patch)
tree751f7f6bb19dfc2eae8fd4a40c0e718838662f98
parent3b2db9002c14f9e0742622f2d503c5801d443827 (diff)
tcp: cleanup scoreboard after recovery
Type: fix When recovering from congestion, remove last hole in scoreboard if it covers all bytes sent above snd_congestion. Change-Id: I752accd4590cd9bf553c35a1bb40a38c308c04f5 Signed-off-by: Florin Coras <fcoras@cisco.com>
-rwxr-xr-xsrc/vnet/tcp/tcp_input.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index 7ab7020ee9b..f4e1026e4c5 100755
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -1298,7 +1298,14 @@ tcp_cc_is_spurious_retransmit (tcp_connection_t * tc)
static int
tcp_cc_recover (tcp_connection_t * tc)
{
+ sack_scoreboard_hole_t *hole;
+
ASSERT (tcp_in_cong_recovery (tc));
+
+ hole = scoreboard_first_hole (&tc->sack_sb);
+ if (hole && hole->start == tc->snd_una && hole->end == tc->snd_nxt)
+ scoreboard_clear (&tc->sack_sb);
+
if (tcp_cc_is_spurious_retransmit (tc))
{
tcp_cc_congestion_undo (tc);