CVS commit: src/sys/net

["Kengo NAKAHARA" <knakahara%netbsd.org@localhost>]

Module Name:    src
Committed By:   knakahara
Date:           Fri Dec  4 02:26:12 UTC 2015

Modified Files:
        src/sys/net: if_gif.c

Log Message:
gif(4): Infinite recursion calls prevention code works again now.

The prevention code haven't worked since gif(4) was changed
to use softint(9). To work this prevention, git_output uses
m_tag(9) like FreeBSD and OpenBSD.

I tested with following code.
====================
# ifconfig gif0 create
# ifconfig gif0 tunnel 10.1.1.1  10.1.1.2
# ifconfig gif0 inet 192.168.100.1 192.168.100.100

# ifconfig gif1 create
# ifconfig gif1 tunnel 192.168.100.1 192.168.100.100
# ifconfig gif1 inet 192.168.101.1 192.168.101.101

# ifconfig gif2 create
# ifconfig gif2 tunnel 192.168.101.1 192.168.101.101
# ifconfig gif2 inet 192.168.102.1 192.168.102.102

# ping -w 1 -c 1 192.168.102.102
# dmesg | tail -n 1
gif0: recursively called too many times(2)
====================


To generate a diff of this commit:
cvs rdiff -u -r1.94 -r1.95 src/sys/net/if_gif.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.