X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Ftcp%2Ftcp_output.c;h=08099fffa4ea76013ef7fcf58bb5769dff4ec822;hb=8a8b05c526883fe34b83239a3c4f56087d1df9e5;hp=fb806446dcc35d9137abf0d4295d989b52e71224;hpb=71e5b4710258376873c62428cb4a81b2a650fc26;p=vpp.git

diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c
index fb806446dcc..08099fffa4e 100644
--- a/src/vnet/tcp/tcp_output.c
+++ b/src/vnet/tcp/tcp_output.c
@@ -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))
     {