diff options
| author |   Florin Coras <fcoras@cisco.com> | 2019-09-12 18:49:44 -0700 |
|---|---|---|
| committer |   Andrew Yourtchenko <ayourtch@gmail.com> | 2019-09-29 16:41:21 +0000 |
| commit | dedb3c8d95322cbac280660bc21665b35d8a3af1 (patch) | |
| tree | 8a1a170d7d9f88337f1207a7781b8301d7223230 | |
| parent | 9dba3dbf03b61b86c45091c12f82fa16bde54510 (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>
(cherry picked from commit 321cfa5fcb8f347329a5296e2024ef0e6cef319f)
| -rwxr-xr-x | src/vnet/tcp/tcp_input.c | 7 |
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); |