Date: Sun, 27 Nov 2016 18:06:03 +0000 (UTC) From: Andriy Voskoboinyk <avos@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r309214 - head/sys/dev/usb/wlan Message-ID: <201611271806.uARI63dc017633@repo.freebsd.org>
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Author: avos Date: Sun Nov 27 18:06:03 2016 New Revision: 309214 URL: https://svnweb.freebsd.org/changeset/base/309214 Log: rsu: add support for hardware multicast filter setup. The algorithm is the same as in rtwn(4). Tested with Asus USB-N10 (STA) + RTL8188CUS (AP). Modified: head/sys/dev/usb/wlan/if_rsu.c head/sys/dev/usb/wlan/if_rsureg.h Modified: head/sys/dev/usb/wlan/if_rsu.c ============================================================================== --- head/sys/dev/usb/wlan/if_rsu.c Sun Nov 27 14:27:51 2016 (r309213) +++ head/sys/dev/usb/wlan/if_rsu.c Sun Nov 27 18:06:03 2016 (r309214) @@ -175,6 +175,8 @@ static void rsu_getradiocaps(struct ieee static void rsu_set_channel(struct ieee80211com *); static void rsu_scan_curchan(struct ieee80211_scan_state *, unsigned long); static void rsu_scan_mindwell(struct ieee80211_scan_state *); +static uint8_t rsu_get_multi_pos(const uint8_t[]); +static void rsu_set_multi(struct rsu_softc *); static void rsu_update_mcast(struct ieee80211com *); static int rsu_alloc_rx_list(struct rsu_softc *); static void rsu_free_rx_list(struct rsu_softc *); @@ -750,10 +752,78 @@ rsu_scan_mindwell(struct ieee80211_scan_ /* NB: don't try to abort scan; wait for firmware to finish */ } +/* + * The same as rtwn_get_multi_pos() / rtwn_set_multi(). + */ +static uint8_t +rsu_get_multi_pos(const uint8_t maddr[]) +{ + uint64_t mask = 0x00004d101df481b4; + uint8_t pos = 0x27; /* initial value */ + int i, j; + + for (i = 0; i < IEEE80211_ADDR_LEN; i++) + for (j = (i == 0) ? 1 : 0; j < 8; j++) + if ((maddr[i] >> j) & 1) + pos ^= (mask >> (i * 8 + j - 1)); + + pos &= 0x3f; + + return (pos); +} + +static void +rsu_set_multi(struct rsu_softc *sc) +{ + struct ieee80211com *ic = &sc->sc_ic; + uint32_t mfilt[2]; + + RSU_ASSERT_LOCKED(sc); + + /* general structure was copied from ath(4). */ + if (ic->ic_allmulti == 0) { + struct ieee80211vap *vap; + struct ifnet *ifp; + struct ifmultiaddr *ifma; + + /* + * Merge multicast addresses to form the hardware filter. + */ + mfilt[0] = mfilt[1] = 0; + TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { + ifp = vap->iv_ifp; + if_maddr_rlock(ifp); + TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { + caddr_t dl; + uint8_t pos; + + dl = LLADDR((struct sockaddr_dl *) + ifma->ifma_addr); + pos = rsu_get_multi_pos(dl); + + mfilt[pos / 32] |= (1 << (pos % 32)); + } + if_maddr_runlock(ifp); + } + } else + mfilt[0] = mfilt[1] = ~0; + + rsu_write_4(sc, R92S_MAR + 0, mfilt[0]); + rsu_write_4(sc, R92S_MAR + 4, mfilt[1]); + + RSU_DPRINTF(sc, RSU_DEBUG_STATE, "%s: MC filter %08x:%08x\n", + __func__, mfilt[0], mfilt[1]); +} + static void rsu_update_mcast(struct ieee80211com *ic) { - /* XXX do nothing? */ + struct rsu_softc *sc = ic->ic_softc; + + RSU_LOCK(sc); + if (sc->sc_running) + rsu_set_multi(sc); + RSU_UNLOCK(sc); } static int @@ -2925,6 +2995,9 @@ rsu_init(struct rsu_softc *sc) goto fail; } + /* Setup multicast filter (must be done after firmware loading). */ + rsu_set_multi(sc); + /* Set PS mode fully active */ error = rsu_set_fw_power_state(sc, RSU_PWR_ACTIVE); Modified: head/sys/dev/usb/wlan/if_rsureg.h ============================================================================== --- head/sys/dev/usb/wlan/if_rsureg.h Sun Nov 27 14:27:51 2016 (r309213) +++ head/sys/dev/usb/wlan/if_rsureg.h Sun Nov 27 18:06:03 2016 (r309214) @@ -48,6 +48,7 @@ #define R92S_MACIDSETTING 0x0050 #define R92S_MACID (R92S_MACIDSETTING + 0x000) +#define R92S_MAR (R92S_MACIDSETTING + 0x010) #define R92S_GP 0x01e0 #define R92S_GPIO_CTRL (R92S_GP + 0x00c)
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