Date: Fri, 8 Oct 2010 18:19:06 +0000 (UTC) From: Pyun YongHyeon <yongari@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r213590 - stable/8/sys/pci Message-ID: <201010081819.o98IJ6VJ002672@svn.freebsd.org>
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Author: yongari Date: Fri Oct 8 18:19:05 2010 New Revision: 213590 URL: http://svn.freebsd.org/changeset/base/213590 Log: MFC r213306: Rename rl_setmulti() to rl_rxfilter() as rl_rxfilter() will handle IFF_ALLMULTI/IFF_PROMISC as well as multicast filter configuration. Rewrite RX filter logic to reduce number of register accesses and make it handle promiscuous/allmulti toggling without controller reinitialization. Previously rl(4) counted on controller reinitialization to reprogram promiscuous configuration but r211767 resulted in avoiding controller reinitialization whenever promiscuous mode is toggled. To address this, keep track of driver's view of interface state and handle IFF_ALLMULTI/IFF_PROMISC changes without reinitializing controller. This should fix a regression introduced in r211267. While I'm here remove unnecessary variable reassignment in ioctl handler. PR: kern/151079 Modified: stable/8/sys/pci/if_rl.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) Modified: stable/8/sys/pci/if_rl.c ============================================================================== --- stable/8/sys/pci/if_rl.c Fri Oct 8 18:06:30 2010 (r213589) +++ stable/8/sys/pci/if_rl.c Fri Oct 8 18:19:05 2010 (r213590) @@ -203,7 +203,7 @@ static void rl_read_eeprom(struct rl_sof static void rl_reset(struct rl_softc *); static int rl_resume(device_t); static int rl_rxeof(struct rl_softc *); -static void rl_setmulti(struct rl_softc *); +static void rl_rxfilter(struct rl_softc *); static int rl_shutdown(device_t); static void rl_start(struct ifnet *); static void rl_start_locked(struct ifnet *); @@ -655,54 +655,51 @@ rl_miibus_statchg(device_t dev) * Program the 64-bit multicast hash filter. */ static void -rl_setmulti(struct rl_softc *sc) +rl_rxfilter(struct rl_softc *sc) { struct ifnet *ifp = sc->rl_ifp; int h = 0; uint32_t hashes[2] = { 0, 0 }; struct ifmultiaddr *ifma; uint32_t rxfilt; - int mcnt = 0; RL_LOCK_ASSERT(sc); rxfilt = CSR_READ_4(sc, RL_RXCFG); - + rxfilt &= ~(RL_RXCFG_RX_ALLPHYS | RL_RXCFG_RX_BROAD | + RL_RXCFG_RX_MULTI); + /* Always accept frames destined for this host. */ + rxfilt |= RL_RXCFG_RX_INDIV; + /* Set capture broadcast bit to capture broadcast frames. */ + if (ifp->if_flags & IFF_BROADCAST) + rxfilt |= RL_RXCFG_RX_BROAD; if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { rxfilt |= RL_RXCFG_RX_MULTI; - CSR_WRITE_4(sc, RL_RXCFG, rxfilt); - CSR_WRITE_4(sc, RL_MAR0, 0xFFFFFFFF); - CSR_WRITE_4(sc, RL_MAR4, 0xFFFFFFFF); - return; - } - - /* first, zot all the existing hash bits */ - CSR_WRITE_4(sc, RL_MAR0, 0); - CSR_WRITE_4(sc, RL_MAR4, 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; - h = ether_crc32_be(LLADDR((struct sockaddr_dl *) - ifma->ifma_addr), ETHER_ADDR_LEN) >> 26; - if (h < 32) - hashes[0] |= (1 << h); - else - hashes[1] |= (1 << (h - 32)); - mcnt++; + if (ifp->if_flags & IFF_PROMISC) + rxfilt |= RL_RXCFG_RX_ALLPHYS; + hashes[0] = 0xFFFFFFFF; + hashes[1] = 0xFFFFFFFF; + } else { + /* 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; + h = ether_crc32_be(LLADDR((struct sockaddr_dl *) + ifma->ifma_addr), ETHER_ADDR_LEN) >> 26; + if (h < 32) + hashes[0] |= (1 << h); + else + hashes[1] |= (1 << (h - 32)); + } + if_maddr_runlock(ifp); + if (hashes[0] != 0 || hashes[1] != 0) + rxfilt |= RL_RXCFG_RX_MULTI; } - if_maddr_runlock(ifp); - - if (mcnt) - rxfilt |= RL_RXCFG_RX_MULTI; - else - rxfilt &= ~RL_RXCFG_RX_MULTI; - CSR_WRITE_4(sc, RL_RXCFG, rxfilt); CSR_WRITE_4(sc, RL_MAR0, hashes[0]); CSR_WRITE_4(sc, RL_MAR4, hashes[1]); + CSR_WRITE_4(sc, RL_RXCFG, rxfilt); } static void @@ -1807,7 +1804,6 @@ rl_init_locked(struct rl_softc *sc) { struct ifnet *ifp = sc->rl_ifp; struct mii_data *mii; - uint32_t rxcfg = 0; uint32_t eaddr[2]; RL_LOCK_ASSERT(sc); @@ -1864,30 +1860,8 @@ rl_init_locked(struct rl_softc *sc) CSR_WRITE_4(sc, RL_TXCFG, RL_TXCFG_CONFIG); CSR_WRITE_4(sc, RL_RXCFG, RL_RXCFG_CONFIG); - /* Set the individual bit to receive frames for this host only. */ - rxcfg = CSR_READ_4(sc, RL_RXCFG); - rxcfg |= RL_RXCFG_RX_INDIV; - - /* If we want promiscuous mode, set the allframes bit. */ - if (ifp->if_flags & IFF_PROMISC) { - rxcfg |= RL_RXCFG_RX_ALLPHYS; - CSR_WRITE_4(sc, RL_RXCFG, rxcfg); - } else { - rxcfg &= ~RL_RXCFG_RX_ALLPHYS; - CSR_WRITE_4(sc, RL_RXCFG, rxcfg); - } - - /* Set capture broadcast bit to capture broadcast frames. */ - if (ifp->if_flags & IFF_BROADCAST) { - rxcfg |= RL_RXCFG_RX_BROAD; - CSR_WRITE_4(sc, RL_RXCFG, rxcfg); - } else { - rxcfg &= ~RL_RXCFG_RX_BROAD; - CSR_WRITE_4(sc, RL_RXCFG, rxcfg); - } - - /* Program the multicast filter, if necessary. */ - rl_setmulti(sc); + /* Set RX filter. */ + rl_rxfilter(sc); #ifdef DEVICE_POLLING /* Disable interrupts if we are polling. */ @@ -1966,20 +1940,22 @@ rl_ioctl(struct ifnet *ifp, u_long comma case SIOCSIFFLAGS: RL_LOCK(sc); if (ifp->if_flags & IFF_UP) { - rl_init_locked(sc); - } else { - if (ifp->if_drv_flags & IFF_DRV_RUNNING) - rl_stop(sc); - } + if (ifp->if_drv_flags & IFF_DRV_RUNNING && + ((ifp->if_flags ^ sc->rl_if_flags) & + (IFF_PROMISC | IFF_ALLMULTI))) + rl_rxfilter(sc); + else + rl_init_locked(sc); + } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) + rl_stop(sc); + sc->rl_if_flags = ifp->if_flags; RL_UNLOCK(sc); - error = 0; break; case SIOCADDMULTI: case SIOCDELMULTI: RL_LOCK(sc); - rl_setmulti(sc); + rl_rxfilter(sc); RL_UNLOCK(sc); - error = 0; break; case SIOCGIFMEDIA: case SIOCSIFMEDIA:
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