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rsu: add support for hardware multicast filter setup.

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The algorithm is the same as in rtwn(4).

Tested with Asus USB-N10 (STA) + RTL8188CUS (AP).
This commit is contained in:
Andriy Voskoboinyk 2016-11-27 18:06:03 +00:00
parent 6908adc31d
commit 935b4fcccd
2 changed files with 75 additions and 1 deletions
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75
sys/dev/usb/wlan/if_rsu.c
View File

@ -175,6 +175,8 @@ static void rsu_getradiocaps(struct ieee80211com *, int, int *,
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_state *ss)
/* 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);

1
sys/dev/usb/wlan/if_rsureg.h
View File

@ -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)