tree f106ca5825afdda752b89cae7e7d384ba55a7d44
parent ee999d8b9573df1b547aacdc6d79f86eb79c25cd
author Jan Engelhardt <jengelh@computergmbh.de> 1223458501 +0200
committer Patrick McHardy <kaber@trash.net> 1223458501 +0200

netfilter: implement NFPROTO_UNSPEC as a wildcard for extensions

When a match or target is looked up using xt_find_{match,target},
Xtables will also search the NFPROTO_UNSPEC module list. This allows
for protocol-independent extensions (like xt_time) to be reused from
other components (e.g. arptables, ebtables).

Extensions that take different codepaths depending on match->family
or target->family of course cannot use NFPROTO_UNSPEC within the
registration structure (e.g. xt_pkttype).

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>