Author: avos
Date: Mon May 16 19:10:59 2016
New Revision: 299965
URL: https://svnweb.freebsd.org/changeset/base/299965
Log:
urtwn: add support for hardware multicast filter setup.
Tested with RTL8188EU and RTL8188CUS.
Modified:
head/sys/dev/urtwn/if_urtwn.c
Modified: head/sys/dev/urtwn/if_urtwn.c
==============================================================================
--- head/sys/dev/urtwn/if_urtwn.c Mon May 16 19:10:35 2016
(r299964)
+++ head/sys/dev/urtwn/if_urtwn.c Mon May 16 19:10:59 2016
(r299965)
@@ -356,6 +356,8 @@ static void urtwn_update_slot(struct ie
static void urtwn_update_slot_cb(struct urtwn_softc *,
union sec_param *);
static void urtwn_update_aifs(struct urtwn_softc *, uint8_t);
+static uint8_t urtwn_get_multi_pos(const uint8_t[]);
+static void urtwn_set_multi(struct urtwn_softc *);
static void urtwn_set_promisc(struct urtwn_softc *);
static void urtwn_update_promisc(struct ieee80211com *);
static void urtwn_update_mcast(struct ieee80211com *);
@@ -4359,9 +4361,8 @@ urtwn_rxfilter_init(struct urtwn_softc *
URTWN_ASSERT_LOCKED(sc);
- /* Accept all multicast frames. */
- urtwn_write_4(sc, R92C_MAR + 0, 0xffffffff);
- urtwn_write_4(sc, R92C_MAR + 4, 0xffffffff);
+ /* Setup multicast filter. */
+ urtwn_set_multi(sc);
/* Filter for management frames. */
filter = 0x7f3f;
@@ -4822,6 +4823,67 @@ urtwn_update_aifs(struct urtwn_softc *sc
}
}
+static uint8_t
+urtwn_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
+urtwn_set_multi(struct urtwn_softc *sc)
+{
+ struct ieee80211com *ic = &sc->sc_ic;
+ uint32_t mfilt[2];
+
+ URTWN_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 = urtwn_get_multi_pos(dl);
+
+ mfilt[pos / 32] |= (1 << (pos % 32));
+ }
+ if_maddr_runlock(ifp);
+ }
+ } else
+ mfilt[0] = mfilt[1] = ~0;
+
+
+ urtwn_write_4(sc, R92C_MAR + 0, mfilt[0]);
+ urtwn_write_4(sc, R92C_MAR + 4, mfilt[1]);
+
+ URTWN_DPRINTF(sc, URTWN_DEBUG_STATE, "%s: MC filter %08x:%08x\n",
+ __func__, mfilt[0], mfilt[1]);
+}
+
static void
urtwn_set_promisc(struct urtwn_softc *sc)
{
@@ -4877,7 +4939,12 @@ urtwn_update_promisc(struct ieee80211com
static void
urtwn_update_mcast(struct ieee80211com *ic)
{
- /* XXX do nothing? */
+ struct urtwn_softc *sc = ic->ic_softc;
+
+ URTWN_LOCK(sc);
+ if (sc->sc_flags & URTWN_RUNNING)
+ urtwn_set_multi(sc);
+ URTWN_UNLOCK(sc);
}
static struct ieee80211_node *
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