diff options
| author | gnn <gnn@FreeBSD.org> | 2010-11-17 18:55:12 +0000 |
|---|---|---|
| committer | gnn <gnn@FreeBSD.org> | 2010-11-17 18:55:12 +0000 |
| commit | 67b3b6b168c800611c4683cb81384e4a678517c6 (patch) | |
| tree | c215fe6cad187e004f1c275a1854ec9306dfb042 /sys/netinet/tcp_output.c | |
| parent | fa6fd32fc398ffee50fe04ddd692ad76c71ebfbf (diff) | |
| download | FreeBSD-src-67b3b6b168c800611c4683cb81384e4a678517c6.zip FreeBSD-src-67b3b6b168c800611c4683cb81384e4a678517c6.tar.gz | |
Add new, per connection, statistics for TCP, including:
Retransmitted Packets
Zero Window Advertisements
Out of Order Receives
These statistics are available via the -T argument to
netstat(1).
MFC after: 2 weeks
Diffstat (limited to 'sys/netinet/tcp_output.c')
| -rw-r--r-- | sys/netinet/tcp_output.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/netinet/tcp_output.c b/sys/netinet/tcp_output.c index 7db0adb..bf42dac 100644 --- a/sys/netinet/tcp_output.c +++ b/sys/netinet/tcp_output.c @@ -803,6 +803,7 @@ send: if ((tp->t_flags & TF_FORCEDATA) && len == 1) TCPSTAT_INC(tcps_sndprobe); else if (SEQ_LT(tp->snd_nxt, tp->snd_max) || sack_rxmit) { + tp->t_sndrexmitpack++; TCPSTAT_INC(tcps_sndrexmitpack); TCPSTAT_ADD(tcps_sndrexmitbyte, len); } else { @@ -1027,9 +1028,10 @@ send: * to read more data than can be buffered prior to transmitting on * the connection. */ - if (th->th_win == 0) + if (th->th_win == 0) { + tp->t_sndzerowin++; tp->t_flags |= TF_RXWIN0SENT; - else + } else tp->t_flags &= ~TF_RXWIN0SENT; if (SEQ_GT(tp->snd_up, tp->snd_nxt)) { th->th_urp = htons((u_short)(tp->snd_up - tp->snd_nxt)); |
