diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2018-04-08 21:15:00 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2018-04-08 21:15:00 +0200 |
| commit | c2dd9b1da7659c9ac42e7612e5621e9426956c73 (patch) | |
| tree | 8c191ea02792997669a87965419aac936243104f /sys/src/9/ip/tcp.c | |
| parent | dc8432d4593c7a4b0a187d0174d4e4e603e456f6 (diff) | |
devip: implement source specific routing
Diffstat (limited to 'sys/src/9/ip/tcp.c')
| -rw-r--r-- | sys/src/9/ip/tcp.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/sys/src/9/ip/tcp.c b/sys/src/9/ip/tcp.c index f241a5c8e..95c03be1e 100644 --- a/sys/src/9/ip/tcp.c +++ b/sys/src/9/ip/tcp.c @@ -864,8 +864,7 @@ tcpmtu(Route *r, int version, uint *scale) * otherwise, we use the default MSS which assumes a * safe minimum MTU of 1280 bytes for V6. */ - if(r != nil){ - ifc = r->ifc; + if(r != nil && (ifc = r->ifc) != nil){ mtu = ifc->maxtu - ifc->m->hsize; if(version == V4) return mtu - (TCP4_PKT + TCP4_HDRSIZE); @@ -1314,7 +1313,7 @@ tcpsndsyn(Conv *s, Tcpctl *tcb) tcb->sndsyntime = NOW; /* set desired mss and scale */ - tcb->mss = tcpmtu(v6lookup(s->p->f, s->raddr, s), s->ipversion, &tcb->scale); + tcb->mss = tcpmtu(v6lookup(s->p->f, s->raddr, s->laddr, s), s->ipversion, &tcb->scale); tpriv = s->p->priv; tpriv->stats[Mss] = tcb->mss; } @@ -1492,7 +1491,7 @@ sndsynack(Proto *tcp, Limbo *lp) seg.ack = lp->irs+1; seg.flags = SYN|ACK; seg.urg = 0; - seg.mss = tcpmtu(v6lookup(tcp->f, lp->raddr, nil), lp->version, &scale); + seg.mss = tcpmtu(v6lookup(tcp->f, lp->raddr, lp->laddr, nil), lp->version, &scale); seg.wnd = QMAX; /* if the other side set scale, we should too */ @@ -1768,7 +1767,7 @@ tcpincoming(Conv *s, Tcp *segp, uchar *src, uchar *dst, uchar version) tcb->flags |= SYNACK; /* set desired mss and scale */ - tcb->mss = tcpmtu(v6lookup(s->p->f, src, s), version, &tcb->scale); + tcb->mss = tcpmtu(v6lookup(s->p->f, src, dst, s), version, &tcb->scale); /* our sending max segment size cannot be bigger than what he asked for */ if(lp->mss != 0 && lp->mss < tcb->mss) |