Author: yongari Date: Thu Apr 29 17:28:07 2010 New Revision: 207375 URL: http://svn.freebsd.org/changeset/base/207375
Log: Preserve unknown bits of RX MAC control register when driver programs RX filter configuration. It seems RX MAC control register is one of key registers to get various offloading features as well as performance. Blindly clearing unrelated bits can result in unexpected results. Tested by: xclin <xclin <> cs dot nctu dot edu dot tw > Modified: head/sys/dev/sge/if_sge.c Modified: head/sys/dev/sge/if_sge.c ============================================================================== --- head/sys/dev/sge/if_sge.c Thu Apr 29 16:18:45 2010 (r207374) +++ head/sys/dev/sge/if_sge.c Thu Apr 29 17:28:07 2010 (r207375) @@ -453,8 +453,9 @@ sge_rxfilter(struct sge_softc *sc) SGE_LOCK_ASSERT(sc); ifp = sc->sge_ifp; - hashes[0] = hashes[1] = 0; - rxfilt = AcceptMyPhys; + rxfilt = CSR_READ_2(sc, RxMacControl); + rxfilt &= ~(AcceptBroadcast | AcceptAllPhys | AcceptMulticast); + rxfilt |= AcceptMyPhys; if ((ifp->if_flags & IFF_BROADCAST) != 0) rxfilt |= AcceptBroadcast; if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) { @@ -463,20 +464,20 @@ sge_rxfilter(struct sge_softc *sc) rxfilt |= AcceptMulticast; hashes[0] = 0xFFFFFFFF; hashes[1] = 0xFFFFFFFF; - goto done; - } - rxfilt |= AcceptMulticast; - /* Now program new ones. */ - if_maddr_rlock(ifp); - TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { - if (ifma->ifma_addr->sa_family != AF_LINK) - continue; - crc = ether_crc32_be(LLADDR((struct sockaddr_dl *) - ifma->ifma_addr), ETHER_ADDR_LEN); - hashes[crc >> 31] |= 1 << ((crc >> 26) & 0x1f); + } else { + rxfilt |= AcceptMulticast; + hashes[0] = hashes[1] = 0; + /* Now program new ones. */ + if_maddr_rlock(ifp); + TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { + if (ifma->ifma_addr->sa_family != AF_LINK) + continue; + crc = ether_crc32_be(LLADDR((struct sockaddr_dl *) + ifma->ifma_addr), ETHER_ADDR_LEN); + hashes[crc >> 31] |= 1 << ((crc >> 26) & 0x1f); + } + if_maddr_runlock(ifp); } - if_maddr_runlock(ifp); -done: CSR_WRITE_2(sc, RxMacControl, rxfilt | 0x02); CSR_WRITE_4(sc, RxHashTable, hashes[0]); CSR_WRITE_4(sc, RxHashTable2, hashes[1]); _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"