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madwifi: add a watchdog for software beacon alert interrupts

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18740 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2009-12-11 02:12:19 +00:00
parent c1b82fcecb
commit d521cd8038
1 changed files with 95 additions and 0 deletions
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95
package/madwifi/patches/455-beacon_watchdog.patch Normal file
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@ -0,0 +1,95 @@
--- a/ath/if_ath.c
+++ b/ath/if_ath.c
@@ -379,6 +379,7 @@ static u_int32_t ath_get_clamped_maxtxpo
static u_int32_t ath_set_clamped_maxtxpower(struct ath_softc *sc,
u_int32_t new_clamped_maxtxpower);
+static void ath_bcn_timer(unsigned long arg);
static void ath_poll_disable(struct net_device *dev);
static void ath_poll_enable(struct net_device *dev);
static void ath_fetch_idle_time(struct ath_softc *sc);
@@ -829,6 +830,10 @@ ath_attach(u_int16_t devid, struct net_d
sc->sc_cal_ch.function = ath_calibrate;
sc->sc_cal_ch.data = (unsigned long) dev;
+ init_timer(&sc->sc_bcntimer);
+ sc->sc_bcntimer.function = ath_bcn_timer;
+ sc->sc_bcntimer.data = (unsigned long) dev;
+
/* initialize DFS related variables */
sc->sc_dfswait = 0;
sc->sc_dfs_cac = 0;
@@ -2704,6 +2709,7 @@ ath_stop_locked(struct net_device *dev)
DPRINTF(sc, ATH_DEBUG_RESET, "invalid=%u flags=0x%x\n",
sc->sc_invalid, dev->flags);
+ del_timer_sync(&sc->sc_bcntimer);
if (dev->flags & IFF_RUNNING) {
/*
* Shutdown the hardware and driver:
@@ -3006,6 +3012,7 @@ ath_reset(struct net_device *dev)
struct ieee80211_channel *c;
HAL_STATUS status;
+ del_timer_sync(&sc->sc_bcntimer);
/*
* XXX: starting the calibration too early seems to lead to
* problems with the beacons.
@@ -5305,6 +5312,7 @@ ath_beacon_send(struct ath_softc *sc, in
if (ath_chan_unavail_dbgmsg(sc))
return;
+ mod_timer(&sc->sc_bcntimer, jiffies + sc->sc_bcntimer_reload);
/*
* Check if the previous beacon has gone out. If
* not don't try to post another, skip this period
@@ -5487,6 +5495,18 @@ ath_beacon_free(struct ath_softc *sc)
cleanup_ath_buf(sc, bf, BUS_DMA_TODEVICE);
}
+static void ath_bcn_timer(unsigned long arg)
+{
+ struct net_device *dev = (struct net_device *)arg;
+ struct ath_softc *sc = netdev_priv(dev);
+ struct ath_hal *ah = sc->sc_ah;
+
+ if (!sc->sc_beacons)
+ return;
+
+ ath_reset(dev);
+}
+
/*
* Configure the beacon and sleep timers.
*
@@ -5523,6 +5543,7 @@ ath_beacon_config(struct ath_softc *sc,
if (vap == NULL)
vap = TAILQ_FIRST(&ic->ic_vaps); /* XXX */
+ del_timer_sync(&sc->sc_bcntimer);
ni = vap->iv_bss;
/* TSF calculation is timing critical - we don't want to be interrupted here */
@@ -5699,6 +5720,9 @@ ath_beacon_config(struct ath_softc *sc,
sc->sc_imask |= HAL_INT_SWBA;
ath_set_beacon_cal(sc, 1);
ath_beaconq_config(sc);
+
+ sc->sc_bcntimer_reload = msecs_to_jiffies(10 * (intval & HAL_BEACON_PERIOD));
+ mod_timer(&sc->sc_bcntimer, jiffies + sc->sc_bcntimer_reload);
} else
ath_set_beacon_cal(sc, 0);
--- a/ath/if_athvar.h
+++ b/ath/if_athvar.h
@@ -789,6 +789,10 @@ struct ath_softc {
u_int16_t sc_ledoff; /* off time for current blink */
struct timer_list sc_ledtimer; /* led off timer */
+ /* beacon watchdog timer */
+ u_int32_t sc_bcntimer_reload;
+ struct timer_list sc_bcntimer;
+
struct ATH_TQ_STRUCT sc_fataltq; /* fatal error intr tasklet */
int sc_rxbufsize; /* rx size based on mtu */