package/madwifi/patches/450-calibration.patch

   1 --- a/ath/if_ath.c
   2 +++ b/ath/if_ath.c
   3 @@ -396,7 +396,6 @@ static int tpc = 1;
   4  static int maxvaps = -1;
   5  static int xchanmode = -1;
   6  #include "ath_wprobe.c"
   7 -static int beacon_cal = 1;
   8
   9  static const struct ath_hw_detect generic_hw_info = {
  10         .vendor_name = "Unknown",
  11 @@ -431,7 +430,6 @@ 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(maxvaps, "i");
  17  MODULE_PARM(xchanmode, "i");
  18  MODULE_PARM(rfkill, "i");
  19 @@ -443,7 +441,6 @@ 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(maxvaps, int, 0600);
  25  module_param(xchanmode, int, 0600);
  26  module_param(rfkill, int, 0600);
  27 @@ -837,6 +834,7 @@ ath_attach(u_int16_t devid, struct net_d
  28                 error = EIO;
  29                 goto bad2;
  30         }
  31 +       sc->sc_cal_interval = ath_calinterval;
  32         init_timer(&sc->sc_cal_ch);
  33         sc->sc_cal_ch.function = ath_calibrate;
  34         sc->sc_cal_ch.data = (unsigned long) dev;
  35 @@ -2765,8 +2763,7 @@ ath_stop_locked(struct net_device *dev)
  36                 }
  37                 if (!sc->sc_invalid) {
  38                         del_timer_sync(&sc->sc_dfs_cac_timer);
  39 -                       if (!sc->sc_beacon_cal)
  40 -                               del_timer_sync(&sc->sc_cal_ch);
  41 +                       del_timer_sync(&sc->sc_cal_ch);
  42                 }
  43                 ath_draintxq(sc);
  44                 if (!sc->sc_invalid) {
  45 @@ -2791,10 +2788,9 @@ static void ath_set_beacon_cal(struct at
  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 +               mod_timer(&sc->sc_cal_ch, jiffies + (sc->sc_cal_interval * HZ));
  52         }
  53 -       sc->sc_beacon_cal = !!val && beacon_cal;
  54 +       sc->sc_beacon_cal = !!val;
  55  }
  56
  57  /*
  58 @@ -3036,7 +3032,7 @@ ath_reset(struct net_device *dev)
  59          * XXX: starting the calibration too early seems to lead to
  60          * problems with the beacons.
  61          */
  62 -       sc->sc_lastcal = jiffies;
  63 +       sc->sc_nextcal = jiffies + msecs_to_jiffies(sc->sc_cal_interval * 1000);
  64
  65         /*
  66          * Convert to a HAL channel description with the flags
  67 @@ -5477,10 +5473,9 @@ next:
  68                         "Invoking ath_hal_txstart with sc_bhalq: %d\n",
  69                         sc->sc_bhalq);
  70                 ath_hal_txstart(ah, sc->sc_bhalq);
  71 -               if (sc->sc_beacon_cal && (jiffies > sc->sc_lastcal + (ath_calinterval * HZ))) {
  72 -                       sc->sc_cal_ch.expires = jiffies + msecs_to_jiffies(10);
  73 -                       add_timer(&sc->sc_cal_ch);
  74 -               }
  75 +               if (sc->sc_beacon_cal && ((sc->sc_bmisscount == 3) ||
  76 +                   (jiffies > sc->sc_nextcal)))
  77 +                       mod_timer(&sc->sc_cal_ch, jiffies + 1);
  78
  79                 sc->sc_stats.ast_be_xmit++;             /* XXX per-VAP? */
  80         }
  81 @@ -9161,6 +9156,7 @@ ath_startrecv(struct ath_softc *sc)
  82                 dev->mtu, sc->sc_cachelsz, sc->sc_rxbufsize);
  83
  84         sc->sc_rxlink = NULL;
  85 +       ath_set_beacon_cal(sc, IEEE80211_IS_MODE_BEACON(sc->sc_ic.ic_opmode));
  86         STAILQ_FOREACH(bf, &sc->sc_rxbuf, bf_list) {
  87                 int error = ath_rxbuf_init(sc, bf);
  88                 ATH_RXBUF_RESET(bf);
  89 @@ -9377,7 +9373,7 @@ ath_chan_set(struct ath_softc *sc, struc
  90                                 jiffies + (sc->sc_dfs_cac_period * HZ));
  91
  92                         /* This is a good time to start a calibration */
  93 -                       ath_set_beacon_cal(sc, 1);
  94 +                       mod_timer(&sc->sc_cal_ch, jiffies + 1);
  95                 }
  96                 /*
  97                  * re configure beacons when it is a turbo mode switch.
  98 @@ -9471,25 +9467,23 @@ ath_calibrate(unsigned long arg)
  99         if (isIQdone == AH_TRUE) {
 100                 /* Unless user has overridden calibration interval,
 101                  * upgrade to less frequent calibration */
 102 -               if (ath_calinterval == ATH_SHORT_CALINTERVAL)
 103 -                       ath_calinterval = ATH_LONG_CALINTERVAL;
 104 +               if (sc->sc_cal_interval == ATH_SHORT_CALINTERVAL)
 105 +                       sc->sc_cal_interval = ATH_LONG_CALINTERVAL;
 106         }
 107         else {
 108                 /* Unless user has overridden calibration interval,
 109                  * downgrade to more frequent calibration */
 110 -               if (ath_calinterval == ATH_LONG_CALINTERVAL)
 111 -                       ath_calinterval = ATH_SHORT_CALINTERVAL;
 112 +               if (sc->sc_cal_interval == ATH_LONG_CALINTERVAL)
 113 +                       sc->sc_cal_interval = ATH_SHORT_CALINTERVAL;
 114         }
 115
 116         DPRINTF(sc, ATH_DEBUG_CALIBRATE, "Channel %u/%x -- IQ %s.\n",
 117                 sc->sc_curchan.channel, sc->sc_curchan.channelFlags,
 118                 isIQdone ? "done" : "not done");
 119
 120 -       sc->sc_lastcal = jiffies;
 121 -       if (!sc->sc_beacon_cal) {
 122 -               sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
 123 -               add_timer(&sc->sc_cal_ch);
 124 -       }
 125 +       sc->sc_nextcal = jiffies + msecs_to_jiffies(sc->sc_cal_interval * 1000);
 126 +       if (!sc->sc_beacon_cal)
 127 +               mod_timer(&sc->sc_cal_ch, sc->sc_nextcal);
 128  }
 129
 130  static void
 131 @@ -9597,9 +9591,6 @@ ath_newstate(struct ieee80211vap *vap, e
 132                 ieee80211_state_name[vap->iv_state],
 133                 ieee80211_state_name[nstate]);
 134
 135 -       if (!sc->sc_beacon_cal)
 136 -               del_timer(&sc->sc_cal_ch);              /* periodic calibration timer */
 137 -
 138         ath_hal_setledstate(ah, leds[nstate]);  /* set LED */
 139         netif_stop_queue(dev);                  /* before we do anything else */
 140
 141 @@ -9821,10 +9812,7 @@ ath_newstate(struct ieee80211vap *vap, e
 142                                 IEEE80211_IS_MODE_DFS_MASTER(vap->iv_opmode)) {
 143                         DPRINTF(sc, ATH_DEBUG_STATE | ATH_DEBUG_DOTH,
 144                                 "VAP -> DFSWAIT_PENDING \n");
 145 -                       /* start calibration timer with a really small value
 146 -                        * 1/10 sec */
 147 -                       if (!sc->sc_beacon_cal)
 148 -                               mod_timer(&sc->sc_cal_ch, jiffies + (HZ/10));
 149 +                       mod_timer(&sc->sc_cal_ch, jiffies + 1);
 150                         /* wake the receiver */
 151                         netif_wake_queue(dev);
 152                         /* don't do the other usual stuff... */
 153 @@ -9866,12 +9854,6 @@ done:
 154         /* Invoke the parent method to complete the work. */
 155         error = avp->av_newstate(vap, nstate, arg);
 156
 157 -       /* Finally, start any timers. */
 158 -       if (nstate == IEEE80211_S_RUN && !sc->sc_beacon_cal) {
 159 -               /* start periodic recalibration timer */
 160 -               mod_timer(&sc->sc_cal_ch, jiffies + (ath_calinterval * HZ));
 161 -       }
 162 -
 163  #ifdef ATH_SUPERG_XR
 164         if (vap->iv_flags & IEEE80211_F_XR &&
 165                 nstate == IEEE80211_S_RUN)
 166 --- a/ath/if_athvar.h
 167 +++ b/ath/if_athvar.h
 168 @@ -834,7 +834,8 @@ struct ath_softc {
 169
 170         struct ieee80211_channel *sc_last_chan;
 171         int sc_beacon_cal;                      /* use beacon timer for calibration */
 172 -       u_int64_t sc_lastcal;                   /* last time the calibration was performed */
 173 +       u_int64_t sc_nextcal;                   /* last time the calibration was performed */
 174 +       int sc_cal_interval;                    /* current calibration interval */
 175         struct timer_list sc_cal_ch;            /* calibration timer */
 176         HAL_NODE_STATS sc_halstats;             /* station-mode rssi stats */
 177