package/madwifi/patches/330-beaconcal.patch

   1 --- a/ath/if_ath.c
   2 +++ b/ath/if_ath.c
   3 @@ -397,6 +397,7 @@
   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 @@
  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 @@
  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 @@ -2602,7 +2605,8 @@
  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 @@ -2619,6 +2623,20 @@
  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 @@ -2744,6 +2762,12 @@
  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 @@ -5156,6 +5180,8 @@
  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 +                       ath_calibrate((unsigned long) sc->sc_dev);
  77
  78                 sc->sc_stats.ast_be_xmit++;             /* XXX per-VAP? */
  79         }
  80 @@ -5405,6 +5431,7 @@
  81                 ath_hal_beacontimers(ah, &bs);
  82                 sc->sc_imask |= HAL_INT_BMISS;
  83                 ath_hal_intrset(ah, sc->sc_imask);
  84 +               ath_set_beacon_cal(sc, 0);
  85         } else {
  86                 ath_hal_intrset(ah, 0);
  87                 if (reset_tsf)
  88 @@ -5416,8 +5443,11 @@
  89                          */
  90                         intval |= HAL_BEACON_ENA;
  91                         sc->sc_imask |= HAL_INT_SWBA;
  92 +                       ath_set_beacon_cal(sc, 1);
  93                         ath_beaconq_config(sc);
  94 -               }
  95 +               } else
  96 +                       ath_set_beacon_cal(sc, 0);
  97 +
  98  #ifdef ATH_SUPERG_DYNTURBO
  99                 ath_beacon_dturbo_config(vap, intval &
 100                                 ~(HAL_BEACON_RESET_TSF | HAL_BEACON_ENA));
 101 @@ -8885,6 +8915,9 @@
 102                         /* Enter DFS wait period */
 103                         mod_timer(&sc->sc_dfs_cac_timer,
 104                                 jiffies + (sc->sc_dfs_cac_period * HZ));
 105 +
 106 +                       /* This is a good time to start a calibration */
 107 +                       ath_set_beacon_cal(sc, 1);
 108                 }
 109                 /*
 110                  * re configure beacons when it is a turbo mode switch.
 111 @@ -8994,8 +9027,11 @@
 112                 sc->sc_curchan.channel, sc->sc_curchan.channelFlags,
 113                 isIQdone ? "done" : "not done");
 114
 115 -       sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
 116 -       add_timer(&sc->sc_cal_ch);
 117 +       sc->sc_lastcal = jiffies;
 118 +       if (!sc->sc_beacon_cal) {
 119 +               sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
 120 +               add_timer(&sc->sc_cal_ch);
 121 +       }
 122  }
 123
 124  static void
 125 @@ -9102,7 +9138,8 @@
 126                 ieee80211_state_name[vap->iv_state],
 127                 ieee80211_state_name[nstate]);
 128
 129 -       del_timer(&sc->sc_cal_ch);              /* periodic calibration timer */
 130 +       if (!sc->sc_beacon_cal)
 131 +               del_timer(&sc->sc_cal_ch);              /* periodic calibration timer */
 132
 133         ath_hal_setledstate(ah, leds[nstate]);  /* set LED */
 134         netif_stop_queue(dev);                  /* before we do anything else */
 135 @@ -9327,7 +9364,8 @@
 136                                 "VAP -> DFSWAIT_PENDING \n");
 137                         /* start calibration timer with a really small value
 138                          * 1/10 sec */
 139 -                       mod_timer(&sc->sc_cal_ch, jiffies + (HZ/10));
 140 +                       if (!sc->sc_beacon_cal)
 141 +                               mod_timer(&sc->sc_cal_ch, jiffies + (HZ/10));
 142                         /* wake the receiver */
 143                         netif_wake_queue(dev);
 144                         /* don't do the other usual stuff... */
 145 @@ -9370,7 +9408,7 @@
 146         error = avp->av_newstate(vap, nstate, arg);
 147
 148         /* Finally, start any timers. */
 149 -       if (nstate == IEEE80211_S_RUN) {
 150 +       if (nstate == IEEE80211_S_RUN && !sc->sc_beacon_cal) {
 151                 /* start periodic recalibration timer */
 152                 mod_timer(&sc->sc_cal_ch, jiffies + (ath_calinterval * HZ));
 153         }
 154 --- a/ath/if_athvar.h
 155 +++ b/ath/if_athvar.h
 156 @@ -778,6 +778,8 @@
 157         struct ieee80211vap **sc_bslot;         /* beacon xmit slots */
 158         int sc_bnext;                           /* next slot for beacon xmit */
 159
 160 +       int sc_beacon_cal;                      /* use beacon timer for calibration */
 161 +       u_int64_t sc_lastcal;                   /* last time the calibration was performed */
 162         struct timer_list sc_cal_ch;            /* calibration timer */
 163         HAL_NODE_STATS sc_halstats;             /* station-mode rssi stats */
 164