diff options
| author |   Florin Coras <fcoras@cisco.com> | 2019-10-22 19:44:45 -0700 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2019-10-23 07:45:00 +0000 |
| commit | 81cb8e4092991d3fd1e24f0862c12548a2d4c714 (patch) | |
| tree | f5d6470fec183a9738d534db9837c9929a002eb5 /src/vnet/tcp/tcp_input.c | |
| parent | 386ebb6e2baa7d3b2535d646c04ccf852f859869 (diff) | |
tcp: fix sack retransmit beyond snd_nxt
Type: fix
Ensure that sack retransmit logic does not try to inadvertently send new
data.
Change-Id: Idfda19643577d9c1b58e2af8d8283cabfbaf98e6
Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vnet/tcp/tcp_input.c')
| -rwxr-xr-x | src/vnet/tcp/tcp_input.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c index 10f96fa7b59..744c5bc01c2 100755 --- a/src/vnet/tcp/tcp_input.c +++ b/src/vnet/tcp/tcp_input.c @@ -890,6 +890,12 @@ scoreboard_next_rxt_hole (sack_scoreboard_t * sb, /* Rule (3): if hole not lost */ else if (seq_lt (hole->start, sb->high_sacked)) { + /* And we didn't already retransmit it */ + if (seq_leq (hole->end, sb->high_rxt)) + { + sb->cur_rxt_hole = TCP_INVALID_SACK_HOLE_INDEX; + return 0; + } *snd_limited = 0; sb->cur_rxt_hole = scoreboard_hole_index (sb, hole); } |