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| author | Robert Watson <rwatson@FreeBSD.org> | 2005-08-03 00:18:35 +0000 |
|---|---|---|
| committer | Robert Watson <rwatson@FreeBSD.org> | 2005-08-03 00:18:35 +0000 |
| commit | 13b203d0d78cc08a7e0da8e8d5eb8c1a5d94ab69 (patch) | |
| tree | 9a4e586ffbcd1450917ee5e388a4e1eb38254e32 /sys/dev/fe | |
| parent | bccb41014af4667b1cf2878456f5a8a854acf1f7 (diff) | |
| download | src-13b203d0d78cc08a7e0da8e8d5eb8c1a5d94ab69.tar.gz src-13b203d0d78cc08a7e0da8e8d5eb8c1a5d94ab69.zip | |
Modify device drivers supporting multicast addresses to lock if_addr_mtx
over iteration of their multicast address lists when synchronizing the
hardware address filter with the network stack-maintained list.
Problem reported by: Ed Maste (emaste at phaedrus dot sandvine dot ca>
MFC after: 1 week
Notes
Notes:
svn path=/head/; revision=148654
Diffstat (limited to 'sys/dev/fe')
| -rw-r--r-- | sys/dev/fe/if_fe.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/fe/if_fe.c b/sys/dev/fe/if_fe.c index 643f3e432de5..8b54c011a7a3 100644 --- a/sys/dev/fe/if_fe.c +++ b/sys/dev/fe/if_fe.c @@ -2060,6 +2060,7 @@ fe_mcaf ( struct fe_softc *sc ) struct ifmultiaddr *ifma; filter = fe_filter_nothing; + IF_ADDR_LOCK(sc->ifp); TAILQ_FOREACH(ifma, &sc->ifp->if_multiaddrs, ifma_link) { if (ifma->ifma_addr->sa_family != AF_LINK) continue; @@ -2072,6 +2073,7 @@ fe_mcaf ( struct fe_softc *sc ) filter.data[index >> 3] |= 1 << (index & 7); } + IF_ADDR_UNLOCK(sc->ifp); return ( filter ); } |