diff options
Diffstat (limited to 'sys/netinet/tcp_input.c')
| -rw-r--r-- | sys/netinet/tcp_input.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c index 93cf272..f5aa012 100644 --- a/sys/netinet/tcp_input.c +++ b/sys/netinet/tcp_input.c @@ -1147,7 +1147,8 @@ after_listen: ((!tcp_do_newreno && !tp->sack_enable && tp->t_dupacks < tcprexmtthresh) || ((tcp_do_newreno || tp->sack_enable) && - !IN_FASTRECOVERY(tp) && to.to_nsacks == 0))) { + !IN_FASTRECOVERY(tp) && to.to_nsacks == 0 && + TAILQ_EMPTY(&tp->snd_holes)))) { KASSERT(headlocked, ("headlocked")); INP_INFO_WUNLOCK(&tcbinfo); headlocked = 0; @@ -1822,7 +1823,8 @@ trimthenstep6: tcpstat.tcps_rcvacktoomuch++; goto dropafterack; } - if (tp->sack_enable) + if (tp->sack_enable && + (to.to_nsacks > 0 || !TAILQ_EMPTY(&tp->snd_holes))) tcp_sack_doack(tp, &to, th->th_ack); if (SEQ_LEQ(th->th_ack, tp->snd_una)) { if (tlen == 0 && tiwin == tp->snd_wnd) { |
