diff options
Diffstat (limited to 'sys/netinet/tcp_sack.c')
| -rw-r--r-- | sys/netinet/tcp_sack.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sys/netinet/tcp_sack.c b/sys/netinet/tcp_sack.c index f59cc5fe0d0b..53a181703fe9 100644 --- a/sys/netinet/tcp_sack.c +++ b/sys/netinet/tcp_sack.c @@ -137,6 +137,11 @@ SYSCTL_INT(_net_inet_tcp_sack, OID_AUTO, lrd, CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(tcp_do_lrd), 1, "Perform Lost Retransmission Detection"); +VNET_DEFINE(int, tcp_sack_tso) = 0; +SYSCTL_INT(_net_inet_tcp_sack, OID_AUTO, tso, CTLFLAG_VNET | CTLFLAG_RW, + &VNET_NAME(tcp_sack_tso), 0, + "Allow TSO during SACK loss recovery"); + VNET_DEFINE(int, tcp_sack_maxholes) = 128; SYSCTL_INT(_net_inet_tcp_sack, OID_AUTO, maxholes, CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(tcp_sack_maxholes), 0, @@ -558,6 +563,7 @@ tcp_sack_doack(struct tcpcb *tp, struct tcpopt *to, tcp_seq th_ack) int i, j, num_sack_blks; sackstatus_t sack_changed; int delivered_data, left_edge_delta; + int maxseg = tp->t_maxseg - MAX_TCPOPTLEN; tcp_seq loss_hiack = 0; int loss_thresh = 0; @@ -604,7 +610,9 @@ tcp_sack_doack(struct tcpcb *tp, struct tcpopt *to, tcp_seq th_ack) SEQ_GT(sack.start, th_ack) && SEQ_LT(sack.start, tp->snd_max) && SEQ_GT(sack.end, tp->snd_una) && - SEQ_LEQ(sack.end, tp->snd_max)) { + SEQ_LEQ(sack.end, tp->snd_max) && + ((sack.end - sack.start) >= maxseg || + SEQ_GEQ(sack.end, tp->snd_max))) { sack_blocks[num_sack_blks++] = sack; } else if (SEQ_LEQ(sack.start, th_ack) && SEQ_LEQ(sack.end, th_ack)) { |