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| author | rwatson <rwatson@FreeBSD.org> | 2009-06-25 16:35:28 +0000 |
|---|---|---|
| committer | rwatson <rwatson@FreeBSD.org> | 2009-06-25 16:35:28 +0000 |
| commit | bd6eb7be79d81290efa6dcaa9f492a05b1966344 (patch) | |
| tree | ff4ff11920651e5f6aaeaa54e259e4f335eec1af /sys/netinet6/in6_ifattach.c | |
| parent | 07492aedb8a9805aa9b5287012a05ac498d59d7b (diff) | |
| download | FreeBSD-src-bd6eb7be79d81290efa6dcaa9f492a05b1966344.zip FreeBSD-src-bd6eb7be79d81290efa6dcaa9f492a05b1966344.tar.gz | |
Add address list locking for in6_ifaddrhead/ia_link: as with locking
for in_ifaddrhead, we stick with an rwlock for the time being, which
we will revisit in the future with a possible move to rmlocks.
Some pieces of code require significant further reworking to be
safe from all classes of writer-writer races.
Reviewed by: bz
MFC after: 6 weeks
Diffstat (limited to 'sys/netinet6/in6_ifattach.c')
| -rw-r--r-- | sys/netinet6/in6_ifattach.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/netinet6/in6_ifattach.c b/sys/netinet6/in6_ifattach.c index 3069c46..7fc1251 100644 --- a/sys/netinet6/in6_ifattach.c +++ b/sys/netinet6/in6_ifattach.c @@ -836,7 +836,9 @@ in6_ifdetach(struct ifnet *ifp) IF_ADDR_UNLOCK(ifp); ifa_free(ifa); /* if_addrhead */ + IN6_IFADDR_WLOCK(); TAILQ_REMOVE(&V_in6_ifaddrhead, ia, ia_link); + IN6_IFADDR_WUNLOCK(); ifa_free(ifa); } |
