diff options
| author | Ryan Thomas McBride <mcbride@cvs.openbsd.org> | 2005-01-10 23:53:50 +0000 |
|---|---|---|
| committer | Ryan Thomas McBride <mcbride@cvs.openbsd.org> | 2005-01-10 23:53:50 +0000 |
| commit | ca6f4dedf7deebc0146f43142008b43fa50903a4 (patch) | |
| tree | 9332686e1751a4754bb55b4e3610c0f01279a46e /sys/netinet/tcp_var.h | |
| parent | cea4da524a79850924b7b29f5df029661c360a26 (diff) | |
Make sure bogus values don't make their way into tcp_xmit_timer() calculations.
- Ignore ts_ecr if it is 0, or the resulting rtt is out of range.
(use tp->t_rtttime instead)
- Initialise tcp_now to 1, to avoid the 500ms window where a valid ts_ecr
of 0 could be ignored.
- Convert out-of-range rtt values to valid ones in tcp_xmit_timer().
ok frantzen@ markus@
Diffstat (limited to 'sys/netinet/tcp_var.h')
| -rw-r--r-- | sys/netinet/tcp_var.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/netinet/tcp_var.h b/sys/netinet/tcp_var.h index 66999823ae4..ccf1a802b97 100644 --- a/sys/netinet/tcp_var.h +++ b/sys/netinet/tcp_var.h @@ -1,4 +1,4 @@ -/* $OpenBSD: tcp_var.h,v 1.68 2004/11/25 15:32:08 markus Exp $ */ +/* $OpenBSD: tcp_var.h,v 1.69 2005/01/10 23:53:49 mcbride Exp $ */ /* $NetBSD: tcp_var.h,v 1.17 1996/02/13 23:44:24 christos Exp $ */ /* @@ -331,6 +331,7 @@ tcp_reass_unlock(struct tcpcb *tp) #define TCP_RTT_SHIFT 3 /* shift for srtt; 3 bits frac. */ #define TCP_RTTVAR_SCALE 4 /* multiplier for rttvar; 2 bits */ #define TCP_RTTVAR_SHIFT 2 /* multiplier for rttvar; 2 bits */ +#define TCP_RTT_MAX (1<<9) /* maximum rtt */ /* * The initial retransmission should happen at rtt + 4 * rttvar. |