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/lnc | |
| 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/lnc')
| -rw-r--r-- | sys/dev/lnc/if_lnc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/lnc/if_lnc.c b/sys/dev/lnc/if_lnc.c index 7357c93..4829639 100644 --- a/sys/dev/lnc/if_lnc.c +++ b/sys/dev/lnc/if_lnc.c @@ -239,6 +239,7 @@ lnc_setladrf(struct lnc_softc *sc) */ bzero(sc->init_block->ladrf, MULTICAST_FILTER_LEN); + IF_ADDR_LOCK(ifp); TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { if (ifma->ifma_addr->sa_family != AF_LINK) continue; @@ -247,6 +248,7 @@ lnc_setladrf(struct lnc_softc *sc) ifma->ifma_addr), ETHER_ADDR_LEN) >> 26; sc->init_block->ladrf[index >> 3] |= 1 << (index & 7); } + IF_ADDR_UNLOCK(ifp); } void |
