package/madwifi/patches/455-beacon_watchdog.patch

   1 --- a/ath/if_ath.c
   2 +++ b/ath/if_ath.c
   3 @@ -379,6 +379,7 @@ static u_int32_t ath_get_clamped_maxtxpo
   4  static u_int32_t ath_set_clamped_maxtxpower(struct ath_softc *sc,
   5                 u_int32_t new_clamped_maxtxpower);
   6
   7 +static void ath_bcn_timer(unsigned long arg);
   8  static void ath_poll_disable(struct net_device *dev);
   9  static void ath_poll_enable(struct net_device *dev);
  10  static void ath_fetch_idle_time(struct ath_softc *sc);
  11 @@ -829,6 +830,10 @@ ath_attach(u_int16_t devid, struct net_d
  12         sc->sc_cal_ch.function = ath_calibrate;
  13         sc->sc_cal_ch.data = (unsigned long) dev;
  14
  15 +       init_timer(&sc->sc_bcntimer);
  16 +       sc->sc_bcntimer.function = ath_bcn_timer;
  17 +       sc->sc_bcntimer.data = (unsigned long) dev;
  18 +
  19         /* initialize DFS related variables */
  20         sc->sc_dfswait = 0;
  21         sc->sc_dfs_cac = 0;
  22 @@ -2704,6 +2709,7 @@ ath_stop_locked(struct net_device *dev)
  23         DPRINTF(sc, ATH_DEBUG_RESET, "invalid=%u flags=0x%x\n",
  24                 sc->sc_invalid, dev->flags);
  25
  26 +       del_timer_sync(&sc->sc_bcntimer);
  27         if (dev->flags & IFF_RUNNING) {
  28                 /*
  29                  * Shutdown the hardware and driver:
  30 @@ -3006,6 +3012,7 @@ ath_reset(struct net_device *dev)
  31         struct ieee80211_channel *c;
  32         HAL_STATUS status;
  33
  34 +       del_timer_sync(&sc->sc_bcntimer);
  35         /*
  36          * XXX: starting the calibration too early seems to lead to
  37          * problems with the beacons.
  38 @@ -5305,6 +5312,7 @@ ath_beacon_send(struct ath_softc *sc, in
  39         if (ath_chan_unavail_dbgmsg(sc))
  40                 return;
  41
  42 +       mod_timer(&sc->sc_bcntimer, jiffies + sc->sc_bcntimer_reload);
  43         /*
  44          * Check if the previous beacon has gone out.  If
  45          * not don't try to post another, skip this period
  46 @@ -5487,6 +5495,18 @@ ath_beacon_free(struct ath_softc *sc)
  47                 cleanup_ath_buf(sc, bf, BUS_DMA_TODEVICE);
  48  }
  49
  50 +static void ath_bcn_timer(unsigned long arg)
  51 +{
  52 +       struct net_device *dev = (struct net_device *)arg;
  53 +       struct ath_softc *sc = netdev_priv(dev);
  54 +       struct ath_hal *ah = sc->sc_ah;
  55 +
  56 +       if (!sc->sc_beacons)
  57 +               return;
  58 +
  59 +       ath_reset(dev);
  60 +}
  61 +
  62  /*
  63   * Configure the beacon and sleep timers.
  64   *
  65 @@ -5523,6 +5543,7 @@ ath_beacon_config(struct ath_softc *sc,
  66         if (vap == NULL)
  67                 vap = TAILQ_FIRST(&ic->ic_vaps);   /* XXX */
  68
  69 +       del_timer_sync(&sc->sc_bcntimer);
  70         ni = vap->iv_bss;
  71
  72         /* TSF calculation is timing critical - we don't want to be interrupted here */
  73 @@ -5699,6 +5720,9 @@ ath_beacon_config(struct ath_softc *sc,
  74                         sc->sc_imask |= HAL_INT_SWBA;
  75                         ath_set_beacon_cal(sc, 1);
  76                         ath_beaconq_config(sc);
  77 +
  78 +                       sc->sc_bcntimer_reload = msecs_to_jiffies(10 * (intval & HAL_BEACON_PERIOD));
  79 +                       mod_timer(&sc->sc_bcntimer, jiffies + sc->sc_bcntimer_reload);
  80                 } else
  81                         ath_set_beacon_cal(sc, 0);
  82
  83 --- a/ath/if_athvar.h
  84 +++ b/ath/if_athvar.h
  85 @@ -789,6 +789,10 @@ struct ath_softc {
  86         u_int16_t sc_ledoff;                    /* off time for current blink */
  87         struct timer_list sc_ledtimer;          /* led off timer */
  88
  89 +       /* beacon watchdog timer */
  90 +       u_int32_t sc_bcntimer_reload;
  91 +       struct timer_list sc_bcntimer;
  92 +
  93         struct ATH_TQ_STRUCT sc_fataltq;        /* fatal error intr tasklet */
  94
  95         int sc_rxbufsize;                       /* rx size based on mtu */