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tcp: avoid head retransmit if scoreboard has no holes

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Type: fix

Change-Id: I6164ad0d97cd91b60c85302eff691836d12a0a70
Signed-off-by: Florin Coras <fcoras@cisco.com>
This commit is contained in:
Florin Coras
2019-10-16 10:07:39 -07:00
committed by Dave Barach
parent 71e5b47102
commit 8a8b05c526
2 changed files with 2 additions and 3 deletions
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2
src/vnet/tcp/tcp_input.c
View File

@ -945,8 +945,6 @@ scoreboard_clear (sack_scoreboard_t * sb)
sb->sacked_bytes = 0;
sb->last_sacked_bytes = 0;
sb->last_bytes_delivered = 0;
sb->high_sacked = 0;
sb->high_rxt = 0;
sb->lost_bytes = 0;
sb->last_lost_bytes = 0;
sb->cur_rxt_hole = TCP_INVALID_SACK_HOLE_INDEX;

3
src/vnet/tcp/tcp_output.c
View File

@ -1932,7 +1932,8 @@ tcp_retransmit_sack (tcp_worker_ctx_t * wrk, tcp_connection_t * tc,
sb = &tc->sack_sb;
/* Check if snd_una is a lost retransmit */
if (seq_gt (sb->high_sacked, tc->snd_congestion)
if (pool_elts (sb->holes)
&& seq_gt (sb->high_sacked, tc->snd_congestion)
&& tc->rxt_head != tc->snd_una
&& tcp_retransmit_should_retry_head (tc, sb))
{