K 10
svn:author
V 7
glebius
K 8
svn:date
V 27
2006-01-30T08:39:09.000000Z
K 7
svn:log
V 419
Add some initial locking to gif(4). It doesn't covers the whole driver,
however IPv4-in-IPv4 tunnels are now stable on SMP. Details:

- Add per-softc mutex.
- Hold the mutex on output.

The main problem was the rtentry, placed in softc. It could be
freed by ip_output(). Meanwhile, another thread being in
in_gif_output() can read and write this rtentry.

Reported by:	many
Tested by:	Alexander Shiryaev <aixp mail.ru>

END