CVS commit: src/sys

["Ryota Ozaki" <ozaki-r%netbsd.org@localhost>]

Module Name:    src
Committed By:   ozaki-r
Date:           Thu Sep 21 07:15:35 UTC 2017

Modified Files:
        src/sys/net: route.c route.h
        src/sys/netatalk: at_proto.c
        src/sys/netinet: in_proto.c
        src/sys/netinet6: in6_proto.c
        src/sys/netmpls: mpls_proto.c
        src/sys/netnatm: natm_proto.c
        src/sys/rump/net/lib/libsockin: sockin.c
        src/sys/sys: domain.h

Log Message:
Invalidate rtcache based on a global generation counter

The change introduces a global generation counter that is incremented when any
routes have been added or deleted. When a rtcache caches a rtentry into itself,
it also stores a snapshot of the generation counter. If the snapshot equals to
the global counter, the cache is still valid, otherwise invalidated.

One drawback of the change is that all rtcaches of all protocol families are
invalidated when any routes of any protocol families are added or deleted.
If that matters, we should have separate generation counters based on
protocol families.

This change removes LIST_ENTRY from struct route, which fixes a part of
PR kern/52515.


To generate a diff of this commit:
cvs rdiff -u -r1.198 -r1.199 src/sys/net/route.c
cvs rdiff -u -r1.113 -r1.114 src/sys/net/route.h
cvs rdiff -u -r1.21 -r1.22 src/sys/netatalk/at_proto.c
cvs rdiff -u -r1.123 -r1.124 src/sys/netinet/in_proto.c
cvs rdiff -u -r1.117 -r1.118 src/sys/netinet6/in6_proto.c
cvs rdiff -u -r1.30 -r1.31 src/sys/netmpls/mpls_proto.c
cvs rdiff -u -r1.17 -r1.18 src/sys/netnatm/natm_proto.c
cvs rdiff -u -r1.64 -r1.65 src/sys/rump/net/lib/libsockin/sockin.c
cvs rdiff -u -r1.32 -r1.33 src/sys/sys/domain.h

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