diff options
| author | rwatson <rwatson@FreeBSD.org> | 2005-08-03 00:18:35 +0000 |
|---|---|---|
| committer | rwatson <rwatson@FreeBSD.org> | 2005-08-03 00:18:35 +0000 |
| commit | 9918d13b80941400bfab87834b1e2f1eea58c7c7 (patch) | |
| tree | 9a4e586ffbcd1450917ee5e388a4e1eb38254e32 /sys/dev/hme | |
| parent | efa13b9da9fc80838e2c73140ae27393b3660da4 (diff) | |
| download | FreeBSD-src-9918d13b80941400bfab87834b1e2f1eea58c7c7.zip FreeBSD-src-9918d13b80941400bfab87834b1e2f1eea58c7c7.tar.gz | |
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
Diffstat (limited to 'sys/dev/hme')
| -rw-r--r-- | sys/dev/hme/if_hme.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/hme/if_hme.c b/sys/dev/hme/if_hme.c index d564bb4..82f43a9 100644 --- a/sys/dev/hme/if_hme.c +++ b/sys/dev/hme/if_hme.c @@ -1679,6 +1679,7 @@ hme_setladrf(struct hme_softc *sc, int reenable) * the word. */ + IF_ADDR_LOCK(sc->sc_ifp); TAILQ_FOREACH(inm, &sc->sc_ifp->if_multiaddrs, ifma_link) { if (inm->ifma_addr->sa_family != AF_LINK) continue; @@ -1691,6 +1692,7 @@ hme_setladrf(struct hme_softc *sc, int reenable) /* Set the corresponding bit in the filter. */ hash[crc >> 4] |= 1 << (crc & 0xf); } + IF_ADDR_UNLOCK(sc->sc_ifp); ifp->if_flags &= ~IFF_ALLMULTI; |
