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/wl | |
| 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/wl')
| -rw-r--r-- | sys/dev/wl/if_wl.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/wl/if_wl.c b/sys/dev/wl/if_wl.c index 562baf4..ce3ed0d 100644 --- a/sys/dev/wl/if_wl.c +++ b/sys/dev/wl/if_wl.c @@ -2121,6 +2121,7 @@ wlconfig(struct wl_softc *sc) outw(PIOP1(base), 0); /* ac_status */ outw(PIOP1(base), AC_MCSETUP|AC_CW_EL); /* ac_command */ outw(PIOR1(base), OFFSET_CU + 8); + IF_ADDR_LOCK(sc->ifp); TAILQ_FOREACH(ifma, &sc->ifp->if_multiaddrs, ifma_link) { if (ifma->ifma_addr->sa_family != AF_LINK) continue; @@ -2131,6 +2132,7 @@ wlconfig(struct wl_softc *sc) outw(PIOP1(base), addrp[4] + (addrp[5] << 8)); ++cnt; } + IF_ADDR_UNLOCK(sc->ifp); outw(PIOR1(base), OFFSET_CU + 6); /* mc-cnt */ outw(PIOP1(base), cnt * WAVELAN_ADDR_SIZE); if (wlcmd(sc, "config()-mcaddress") == 0) |
