package/madwifi/patches/330-beaconcal.patch

   1 --- a/ath/if_ath.c
   2 +++ b/ath/if_ath.c
   3 @@ -397,6 +397,7 @@ static int countrycode = -1;
   4  static int maxvaps = -1;
   5  static int outdoor = -1;
   6  static int xchanmode = -1;
   7 +static int beacon_cal = 1;
   8
   9  static const char *hal_status_desc[] = {
  10         "No error",
  11 @@ -422,6 +423,7 @@ static struct notifier_block ath_event_b
  12  };
  13
  14  #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,52))
  15 +MODULE_PARM(beacon_cal, "i");
  16  MODULE_PARM(countrycode, "i");
  17  MODULE_PARM(maxvaps, "i");
  18  MODULE_PARM(outdoor, "i");
  19 @@ -434,6 +436,7 @@ MODULE_PARM(autocreate, "s");
  20  MODULE_PARM(ratectl, "s");
  21  #else
  22  #include <linux/moduleparam.h>
  23 +module_param(beacon_cal, int, 0600);
  24  module_param(countrycode, int, 0600);
  25  module_param(maxvaps, int, 0600);
  26  module_param(outdoor, int, 0600);
  27 @@ -2600,7 +2603,8 @@ ath_stop_locked(struct net_device *dev)
  28                 }
  29                 if (!sc->sc_invalid) {
  30                         del_timer_sync(&sc->sc_dfs_cac_timer);
  31 -                       del_timer_sync(&sc->sc_cal_ch);
  32 +                       if (!sc->sc_beacon_cal)
  33 +                               del_timer_sync(&sc->sc_cal_ch);
  34                 }
  35                 ath_draintxq(sc);
  36                 if (!sc->sc_invalid) {
  37 @@ -2617,6 +2621,20 @@ ath_stop_locked(struct net_device *dev)
  38         return 0;
  39  }
  40
  41 +static void ath_set_beacon_cal(struct ath_softc *sc, int val)
  42 +{
  43 +       if (sc->sc_beacon_cal == !!val)
  44 +               return;
  45 +
  46 +       if (val) {
  47 +               del_timer_sync(&sc->sc_cal_ch);
  48 +       } else {
  49 +               sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
  50 +               add_timer(&sc->sc_cal_ch);
  51 +       }
  52 +       sc->sc_beacon_cal = !!val && beacon_cal;
  53 +}
  54 +
  55  /*
  56   * Stop the device, grabbing the top-level lock to protect
  57   * against concurrent entry through ath_init (which can happen
  58 @@ -2742,6 +2760,12 @@ ath_reset(struct net_device *dev)
  59         HAL_STATUS status;
  60
  61         /*
  62 +        * XXX: starting the calibration too early seems to lead to
  63 +        * problems with the beacons.
  64 +        */
  65 +       sc->sc_lastcal = jiffies;
  66 +
  67 +       /*
  68          * Convert to a HAL channel description with the flags
  69          * constrained to reflect the current operating mode.
  70          */
  71 @@ -5154,6 +5178,10 @@ ath_beacon_send(struct ath_softc *sc, in
  72                         "Invoking ath_hal_txstart with sc_bhalq: %d\n",
  73                         sc->sc_bhalq);
  74                 ath_hal_txstart(ah, sc->sc_bhalq);
  75 +               if (sc->sc_beacon_cal && (jiffies > sc->sc_lastcal + (ath_calinterval * HZ))) {
  76 +                       sc->sc_cal_ch.expires = jiffies + msecs_to_jiffies(10);
  77 +                       add_timer(&sc->sc_cal_ch);
  78 +               }
  79
  80                 sc->sc_stats.ast_be_xmit++;             /* XXX per-VAP? */
  81         }
  82 @@ -5403,6 +5431,7 @@ ath_beacon_config(struct ath_softc *sc,
  83                 ath_hal_beacontimers(ah, &bs);
  84                 sc->sc_imask |= HAL_INT_BMISS;
  85                 ath_hal_intrset(ah, sc->sc_imask);
  86 +               ath_set_beacon_cal(sc, 0);
  87         } else {
  88                 ath_hal_intrset(ah, 0);
  89                 if (reset_tsf)
  90 @@ -5414,8 +5443,11 @@ ath_beacon_config(struct ath_softc *sc,
  91                          */
  92                         intval |= HAL_BEACON_ENA;
  93                         sc->sc_imask |= HAL_INT_SWBA;
  94 +                       ath_set_beacon_cal(sc, 1);
  95                         ath_beaconq_config(sc);
  96 -               }
  97 +               } else
  98 +                       ath_set_beacon_cal(sc, 0);
  99 +
 100  #ifdef ATH_SUPERG_DYNTURBO
 101                 ath_beacon_dturbo_config(vap, intval &
 102                                 ~(HAL_BEACON_RESET_TSF | HAL_BEACON_ENA));
 103 @@ -8879,6 +8911,9 @@ ath_chan_set(struct ath_softc *sc, struc
 104                         /* Enter DFS wait period */
 105                         mod_timer(&sc->sc_dfs_cac_timer,
 106                                 jiffies + (sc->sc_dfs_cac_period * HZ));
 107 +
 108 +                       /* This is a good time to start a calibration */
 109 +                       ath_set_beacon_cal(sc, 1);
 110                 }
 111                 /*
 112                  * re configure beacons when it is a turbo mode switch.
 113 @@ -8988,8 +9023,11 @@ ath_calibrate(unsigned long arg)
 114                 sc->sc_curchan.channel, sc->sc_curchan.channelFlags,
 115                 isIQdone ? "done" : "not done");
 116
 117 -       sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
 118 -       add_timer(&sc->sc_cal_ch);
 119 +       sc->sc_lastcal = jiffies;
 120 +       if (!sc->sc_beacon_cal) {
 121 +               sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
 122 +               add_timer(&sc->sc_cal_ch);
 123 +       }
 124  }
 125
 126  static void
 127 @@ -9096,7 +9134,8 @@ ath_newstate(struct ieee80211vap *vap, e
 128                 ieee80211_state_name[vap->iv_state],
 129                 ieee80211_state_name[nstate]);
 130
 131 -       del_timer(&sc->sc_cal_ch);              /* periodic calibration timer */
 132 +       if (!sc->sc_beacon_cal)
 133 +               del_timer(&sc->sc_cal_ch);              /* periodic calibration timer */
 134
 135         ath_hal_setledstate(ah, leds[nstate]);  /* set LED */
 136         netif_stop_queue(dev);                  /* before we do anything else */
 137 @@ -9321,7 +9360,8 @@ ath_newstate(struct ieee80211vap *vap, e
 138                                 "VAP -> DFSWAIT_PENDING \n");
 139                         /* start calibration timer with a really small value
 140                          * 1/10 sec */
 141 -                       mod_timer(&sc->sc_cal_ch, jiffies + (HZ/10));
 142 +                       if (!sc->sc_beacon_cal)
 143 +                               mod_timer(&sc->sc_cal_ch, jiffies + (HZ/10));
 144                         /* wake the receiver */
 145                         netif_wake_queue(dev);
 146                         /* don't do the other usual stuff... */
 147 @@ -9364,7 +9404,7 @@ done:
 148         error = avp->av_newstate(vap, nstate, arg);
 149
 150         /* Finally, start any timers. */
 151 -       if (nstate == IEEE80211_S_RUN) {
 152 +       if (nstate == IEEE80211_S_RUN && !sc->sc_beacon_cal) {
 153                 /* start periodic recalibration timer */
 154                 mod_timer(&sc->sc_cal_ch, jiffies + (ath_calinterval * HZ));
 155         }
 156 --- a/ath/if_athvar.h
 157 +++ b/ath/if_athvar.h
 158 @@ -778,6 +778,8 @@ struct ath_softc {
 159         struct ieee80211vap **sc_bslot;         /* beacon xmit slots */
 160         int sc_bnext;                           /* next slot for beacon xmit */
 161
 162 +       int sc_beacon_cal;                      /* use beacon timer for calibration */
 163 +       u_int64_t sc_lastcal;                   /* last time the calibration was performed */
 164         struct timer_list sc_cal_ch;            /* calibration timer */
 165         HAL_NODE_STATS sc_halstats;             /* station-mode rssi stats */
 166