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/de/if_de.c | |
| 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/de/if_de.c')
| -rw-r--r-- | sys/dev/de/if_de.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/de/if_de.c b/sys/dev/de/if_de.c index 5fdff82..421d1aa 100644 --- a/sys/dev/de/if_de.c +++ b/sys/dev/de/if_de.c @@ -3026,6 +3026,7 @@ tulip_addr_filter( #endif multicnt = 0; + IF_ADDR_LOCK(sc->tulip_ifp); TAILQ_FOREACH(ifma, &sc->tulip_ifp->if_multiaddrs, ifma_link) { if (ifma->ifma_addr->sa_family == AF_LINK) @@ -3147,6 +3148,7 @@ tulip_addr_filter( #endif } } + IF_ADDR_UNLOCK(sc->tulip_ifp); #if defined(IFF_ALLMULTI) if (sc->tulip_flags & TULIP_ALLMULTI) sc->tulip_ifp->if_flags |= IFF_ALLMULTI; |
