diff options
| author |   provos <provos@openbsd.org> | 1998-11-17 19:23:00 +0000 |
|---|---|---|
| committer | provos <provos@openbsd.org> | 1998-11-17 19:23:00 +0000 |
| commit | 201dac0fe332deeedd3063648eea7a618c7049bf (patch) | |
| tree | c783d955167db8ef59364a6dbe29ae101d63195a /sys/netinet/tcp_usrreq.c | |
| parent | Add RCS Ids from the EOM repository (diff) | |
| download | wireguard-openbsd-201dac0fe332deeedd3063648eea7a618c7049bf.tar.xz wireguard-openbsd-201dac0fe332deeedd3063648eea7a618c7049bf.zip | |
NewReno, SACK and FACK support for TCP, adapted from code for BSDI
by Hari Balakrishnan (hari@lcs.mit.edu), Tom Henderson (tomh@cs.berkeley.edu)
and Venkat Padmanabhan (padmanab@cs.berkeley.edu) as part of the
Daedalus research group at the University of California,
(http://daedalus.cs.berkeley.edu). [I was able to do this on time spent
at the Center for Information Technology Integration (citi.umich.edu)]
Diffstat (limited to 'sys/netinet/tcp_usrreq.c')
| -rw-r--r-- | sys/netinet/tcp_usrreq.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c index 880b21ec5e0..7ed5d330fc4 100644 --- a/sys/netinet/tcp_usrreq.c +++ b/sys/netinet/tcp_usrreq.c @@ -1,4 +1,4 @@ -/* $OpenBSD: tcp_usrreq.c,v 1.28 1998/06/27 02:42:41 deraadt Exp $ */ +/* $OpenBSD: tcp_usrreq.c,v 1.29 1998/11/17 19:23:02 provos Exp $ */ /* $NetBSD: tcp_usrreq.c,v 1.20 1996/02/13 23:44:16 christos Exp $ */ /* @@ -241,6 +241,14 @@ tcp_usrreq(so, req, m, nam, control) tcp_iss += arc4random() % (TCP_ISSINCR / 2) + 1; #endif /* !TCP_COMPAT_42 */ tcp_sendseqinit(tp); +#if defined(TCP_SACK) || defined(TCP_NEWRENO) + tp->snd_last = tp->snd_una; +#endif +#if defined(TCP_SACK) && defined(TCP_FACK) + tp->snd_fack = tp->snd_una; + tp->retran_data = 0; + tp->snd_awnd = 0; +#endif error = tcp_output(tp); break; @@ -435,6 +443,12 @@ tcp_ctloutput(op, so, level, optname, mp) error = EINVAL; break; +#ifdef TCP_SACK + case TCP_SACK_DISABLE: + i = *mtod(m, int *); + tp->sack_disable = i; + break; +#endif default: error = ENOPROTOOPT; break; @@ -454,6 +468,11 @@ tcp_ctloutput(op, so, level, optname, mp) case TCP_MAXSEG: *mtod(m, int *) = tp->t_maxseg; break; +#ifdef TCP_SACK + case TCP_SACK_DISABLE: + *mtod(m, int *) = tp->sack_disable; + break; +#endif default: error = ENOPROTOOPT; break; @@ -654,7 +673,14 @@ tcp_sysctl(name, namelen, oldp, oldlenp, newp, newlen) case TCPCTL_RFC1323: return (sysctl_int(oldp, oldlenp, newp, newlen, &tcp_do_rfc1323)); - +#ifdef TCP_SACK + case TCPCTL_SACK: + return (sysctl_int(oldp, oldlenp, newp, newlen, + &tcp_do_sack)); +#endif + case TCPCTL_MSSDFLT: + return (sysctl_int(oldp, oldlenp, newp, newlen, + &tcp_mssdflt)); case TCPCTL_KEEPINITTIME: return (sysctl_int(oldp, oldlenp, newp, newlen, &tcptv_keep_init)); |