diff options
| author |   mcbride <mcbride@openbsd.org> | 2005-05-27 04:55:27 +0000 |
|---|---|---|
| committer | mcbride <mcbride@openbsd.org> | 2005-05-27 04:55:27 +0000 |
| commit | ce12ce87d291522f11dbdffa40853d35e0846adc (patch) | |
| tree | 8fb5cc20fd7e3be798cbcea2a5613c3935641cbf /sys/net/rtsock.c | |
| parent | handle SIOCSIFMTU ioctl (diff) | |
| download | wireguard-openbsd-ce12ce87d291522f11dbdffa40853d35e0846adc.tar.xz wireguard-openbsd-ce12ce87d291522f11dbdffa40853d35e0846adc.zip | |
Experimental support for opportunitic use of jumbograms where only some hosts
on the local network support them.
This adds a new socket option, SO_JUMBO, and a new route flag,
RTF_JUMBO. If _both_ the socket option is set and the route for the host
has RTF_JUMBO set, ip_output will fragment the packet to the largest
possible size for the link, ignoring the card's MTU.
The semantics of this feature will be evolving rapidly; talk to us
if you intend to use it.
ok deraadt@ marius@
Diffstat (limited to 'sys/net/rtsock.c')
| -rw-r--r-- | sys/net/rtsock.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/net/rtsock.c b/sys/net/rtsock.c index f19aabbf2cd..2085dd99568 100644 --- a/sys/net/rtsock.c +++ b/sys/net/rtsock.c @@ -1,4 +1,4 @@ -/* $OpenBSD: rtsock.c,v 1.43 2004/09/16 22:31:29 henning Exp $ */ +/* $OpenBSD: rtsock.c,v 1.44 2005/05/27 04:55:27 mcbride Exp $ */ /* $NetBSD: rtsock.c,v 1.18 1996/03/29 00:32:10 cgd Exp $ */ /* @@ -396,6 +396,12 @@ report: rt->rt_ifp = ifp; } } + + /* XXX Hack to allow the jumbo flag to be toggled */ + if (rtm->rtm_flags & RTF_JUMBO) + rt->rt_flags = (rt->rt_flags & ~rtm->rtm_use) | + (rtm->rtm_flags & rtm->rtm_use); + rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx, &rt->rt_rmx); if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest) |