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urtwn: add support for hardware multicast filter setup.

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Tested with RTL8188EU and RTL8188CUS.
This commit is contained in:
Andriy Voskoboinyk 2016-05-16 19:10:59 +00:00
parent d58f3e80b8
commit af524a9f4b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=299965
1 changed files with 71 additions and 4 deletions
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75
sys/dev/urtwn/if_urtwn.c
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@ -356,6 +356,8 @@ static void urtwn_update_slot(struct ieee80211com *);
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 *sc)
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, uint8_t slottime)
}
}
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 *ic)
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 *