package/madwifi/patches/414-txpower.patch

   1 --- a/net80211/ieee80211.c
   2 +++ b/net80211/ieee80211.c
   3 @@ -270,6 +270,7 @@ ieee80211_ifattach(struct ieee80211com *
   4                 ("invalid number of channels specified: %u", ic->ic_nchans));
   5         memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail));
   6         ic->ic_modecaps |= 1 << IEEE80211_MODE_AUTO;
   7 +       ic->ic_max_txpower = IEEE80211_TXPOWER_MIN;
   8
   9         for (i = 0; i < ic->ic_nchans; i++) {
  10                 c = &ic->ic_channels[i];
  11 @@ -277,6 +278,7 @@ ieee80211_ifattach(struct ieee80211com *
  12                 KASSERT(c->ic_ieee < IEEE80211_CHAN_MAX,
  13                         ("channel with bogus ieee number %u", c->ic_ieee));
  14                 setbit(ic->ic_chan_avail, c->ic_ieee);
  15 +               ic->ic_max_txpower = max(ic->ic_max_txpower, (u16) (c->ic_maxpower * 2));
  16
  17                 if (c->ic_scanflags & IEEE80211_NOSCAN_DEFAULT)
  18                         c->ic_scanflags |= IEEE80211_NOSCAN_SET;
  19 @@ -346,8 +348,6 @@ ieee80211_ifattach(struct ieee80211com *
  20         TAILQ_INIT(&ic->ic_vaps);
  21
  22         ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX;
  23 -       ic->ic_txpowlimit = IEEE80211_TXPOWER_MIN;
  24 -       ic->ic_newtxpowlimit = IEEE80211_TXPOWER_MAX;
  25
  26         init_timer(&ic->ic_dfs_excl_timer);
  27         ic->ic_dfs_excl_timer.function =
  28 --- a/net80211/ieee80211_node.c
  29 +++ b/net80211/ieee80211_node.c
  30 @@ -1125,7 +1125,7 @@ ieee80211_alloc_node(struct ieee80211vap
  31
  32                 ni->ni_chan = IEEE80211_CHAN_ANYC;
  33                 ni->ni_authmode = IEEE80211_AUTH_OPEN;
  34 -               ni->ni_txpower = ic->ic_txpowlimit;
  35 +               ni->ni_txpower = IEEE80211_TXPOWER_MAX;
  36
  37                 ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey,
  38                         IEEE80211_KEYIX_NONE);
  39 --- a/net80211/ieee80211_var.h
  40 +++ b/net80211/ieee80211_var.h
  41 @@ -343,8 +343,9 @@ struct ieee80211com {
  42         u_int16_t ic_holdover;                  /* PM hold over duration */
  43         u_int16_t ic_bmissthreshold;            /* beacon miss threshold (# beacons) */
  44         unsigned long ic_bmiss_guard;           /* when to cease ignoring bmiss (jiffies) */
  45 -       u_int16_t ic_txpowlimit;                /* global tx power limit (in 0.5 dBm) */
  46 -       u_int16_t ic_newtxpowlimit;             /* tx power limit to change to (in 0.5 dBm) */
  47 +       u_int16_t ic_txpowlimit;                /* configured global tx power limit (in 0.5 dBm) */
  48 +       u_int16_t ic_max_txpower;                       /* global hardware tx power limit */
  49 +       u_int16_t ic_cur_txpower;                       /* current tx power */
  50         u_int16_t ic_uapsdmaxtriggers;          /* max triggers that could arrive */
  51         u_int8_t ic_coverageclass;              /* coverage class */
  52         u_int8_t ic_protmode_rssi;                      /* rssi threshold for protection mode */
  53 --- a/net80211/ieee80211_wireless.c
  54 +++ b/net80211/ieee80211_wireless.c
  55 @@ -920,17 +920,23 @@ ieee80211_ioctl_giwrange(struct net_devi
  56         u_int8_t reported[IEEE80211_CHAN_BYTES];        /* XXX stack usage? */
  57         int i, r;
  58         int step = 0;
  59 +       u_int16_t power;
  60
  61         data->length = sizeof(struct iw_range);
  62         memset(range, 0, sizeof(struct iw_range));
  63
  64 +       power = ic->ic_max_txpower;
  65 +       if (ic->ic_bsschan && (ic->ic_bsschan != IEEE80211_CHAN_ANYC))
  66 +               power = min(power, (u_int16_t) ic->ic_bsschan->ic_maxpower);
  67 +
  68         /* txpower (128 values, but will print out only IW_MAX_TXPOWER) */
  69 -       range->num_txpower = (ic->ic_txpowlimit >= 8) ? IW_MAX_TXPOWER : ic->ic_txpowlimit;
  70 -       step = ic->ic_txpowlimit / (2 * (IW_MAX_TXPOWER - 1));
  71 +       power /= 2; /* Unit: 0.5 dBm */
  72 +       range->num_txpower = (power >= 8) ? IW_MAX_TXPOWER : power;
  73 +       step = power / (IW_MAX_TXPOWER - 1);
  74
  75         range->txpower[0] = 0;
  76         for (i = 1; i < IW_MAX_TXPOWER; i++)
  77 -               range->txpower[i] = (ic->ic_txpowlimit/2)
  78 +               range->txpower[i] = power
  79                         - (IW_MAX_TXPOWER - i - 1) * step;
  80
  81         range->txpower_capa = IW_TXPOW_DBM;
  82 @@ -1379,13 +1385,11 @@ ieee80211_ioctl_siwtxpow(struct net_devi
  83         int fixed, disabled;
  84
  85         fixed = (ic->ic_flags & IEEE80211_F_TXPOW_FIXED);
  86 -       disabled = (fixed && vap->iv_bss->ni_txpower == 0);
  87 +       disabled = (fixed && ic->ic_txpowlimit == 0);
  88         if (rrq->disabled) {
  89                 if (!disabled) {
  90 -                       if ((ic->ic_caps & IEEE80211_C_TXPMGT) == 0)
  91 -                               return -EOPNOTSUPP;
  92                         ic->ic_flags |= IEEE80211_F_TXPOW_FIXED;
  93 -                       vap->iv_bss->ni_txpower = 0;
  94 +                       ic->ic_txpowlimit = 0;
  95                         goto done;
  96                 }
  97                 return 0;
  98 @@ -1396,30 +1400,12 @@ ieee80211_ioctl_siwtxpow(struct net_devi
  99                         return -EOPNOTSUPP;
 100                 if (rrq->flags != IW_TXPOW_DBM)
 101                         return -EINVAL;
 102 -               if (ic->ic_bsschan != IEEE80211_CHAN_ANYC) {
 103 -                       if ((ic->ic_bsschan->ic_maxregpower >= rrq->value) &&
 104 -                           (ic->ic_txpowlimit/2 >= rrq->value)) {
 105 -                               vap->iv_bss->ni_txpower = 2 * rrq->value;
 106 -                               ic->ic_newtxpowlimit = 2 * rrq->value;
 107 -                               ic->ic_flags |= IEEE80211_F_TXPOW_FIXED;
 108 -                       } else
 109 -                               return -EINVAL;
 110 -               } else {
 111 -                       /*
 112 -                        * No channel set yet
 113 -                        */
 114 -                       if (ic->ic_txpowlimit/2 >= rrq->value) {
 115 -                               vap->iv_bss->ni_txpower = 2 * rrq->value;
 116 -                               ic->ic_newtxpowlimit = 2 * rrq->value;
 117 -                               ic->ic_flags |= IEEE80211_F_TXPOW_FIXED;
 118 -                       }
 119 -                       else
 120 -                               return -EINVAL;
 121 -               }
 122 +               ic->ic_txpowlimit = 2 * rrq->value;
 123 +               ic->ic_flags |= IEEE80211_F_TXPOW_FIXED;
 124         } else {
 125                 if (!fixed)             /* no change */
 126                         return 0;
 127 -               ic->ic_newtxpowlimit = IEEE80211_TXPOWER_MAX;
 128 +               ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX;
 129                 ic->ic_flags &= ~IEEE80211_F_TXPOW_FIXED;
 130         }
 131  done:
 132 @@ -1588,9 +1574,22 @@ ieee80211_ioctl_giwtxpow(struct net_devi
 133  {
 134         struct ieee80211vap *vap = dev->priv;
 135         struct ieee80211com *ic = vap->iv_ic;
 136 -
 137 -       rrq->value = vap->iv_bss->ni_txpower / 2;
 138 -       rrq->fixed = (ic->ic_flags & IEEE80211_F_TXPOW_FIXED) != 0;
 139 +       unsigned int power = ic->ic_txpowlimit;
 140 +       struct ieee80211_channel *c;
 141 +       u_int16_t txp = ic->ic_max_txpower;
 142 +
 143 +       if (ic->ic_bsschan && (ic->ic_bsschan != IEEE80211_CHAN_ANYC)) {
 144 +               txp = min(txp, (u16) ic->ic_bsschan->ic_maxpower);
 145 +       } else if (ic->ic_cur_txpower > 0) {
 146 +               txp = min(txp, ic->ic_cur_txpower);
 147 +       }
 148 +       if (ic->ic_flags & IEEE80211_F_TXPOW_FIXED) {
 149 +               txp = min(txp, ic->ic_txpowlimit);
 150 +               rrq->fixed = 1;
 151 +       } else {
 152 +               rrq->fixed = 0;
 153 +       }
 154 +       rrq->value = txp / 2;
 155         rrq->disabled = (rrq->fixed && rrq->value == 0);
 156         rrq->flags = IW_TXPOW_DBM;
 157         return 0;
 158 --- a/ath/if_ath.c
 159 +++ b/ath/if_ath.c
 160 @@ -380,7 +380,6 @@ static unsigned int ath_dump_hal_map(str
 161  static u_int32_t ath_get_clamped_maxtxpower(struct ath_softc *sc);
 162  static u_int32_t ath_set_clamped_maxtxpower(struct ath_softc *sc,
 163                 u_int32_t new_clamped_maxtxpower);
 164 -static u_int32_t ath_get_real_maxtxpower(struct ath_softc *sc);
 165
 166  static void ath_poll_disable(struct net_device *dev);
 167  static void ath_poll_enable(struct net_device *dev);
 168 @@ -3168,7 +3167,7 @@ ath_tx_startraw(struct net_device *dev,
 169         try0 = ph->try0;
 170         rt = sc->sc_currates;
 171         txrate = dot11_to_ratecode(sc, rt, ph->rate0);
 172 -       power = ph->power > 60 ? 60 : ph->power;
 173 +       power = ph->power > 63 ? 63 : ph->power;
 174         hdrlen = ieee80211_anyhdrsize(wh);
 175         pktlen = skb->len + IEEE80211_CRC_LEN;
 176
 177 @@ -8390,7 +8389,7 @@ ath_tx_start(struct net_device *dev, str
 178                             pktlen,                     /* packet length */
 179                             hdrlen,                     /* header length */
 180                             atype,                      /* Atheros packet type */
 181 -                           MIN(ni->ni_txpower, 60),    /* txpower */
 182 +                           MIN(ni->ni_txpower, 63),    /* txpower */
 183                             txrate, try0,               /* series 0 rate/tries */
 184                             keyix,                      /* key cache index */
 185                             antenna,                    /* antenna mode */
 186 @@ -10383,59 +10382,16 @@ ath_get_clamped_maxtxpower(struct ath_so
 187
 188  /* XXX: this function needs some locking to avoid being called
 189   * twice/interrupted */
 190 -/* 1. Save the currently specified maximum txpower (as clamped by madwifi)
 191 - * 2. Determine the real maximum txpower the card can support by
 192 - *    setting a value that exceeds the maximum range (by one) and
 193 - *    finding out what it limits us to.
 194 - * 3. Restore the saved maxtxpower value we had previously specified */
 195 -static u_int32_t
 196 -ath_get_real_maxtxpower(struct ath_softc *sc)
 197 -{
 198 -       u_int32_t saved_clamped_maxtxpower;
 199 -       u_int32_t real_maxtxpower;
 200 -
 201 -       saved_clamped_maxtxpower = ath_get_clamped_maxtxpower(sc);
 202 -       real_maxtxpower =
 203 -               ath_set_clamped_maxtxpower(sc, IEEE80211_TXPOWER_MAX + 1);
 204 -       ath_set_clamped_maxtxpower(sc, saved_clamped_maxtxpower);
 205 -       return real_maxtxpower;
 206 -}
 207 -
 208 -
 209 -/* XXX: this function needs some locking to avoid being called
 210 - * twice/interrupted */
 211  static void
 212  ath_update_txpow(struct ath_softc *sc)
 213  {
 214         struct ieee80211com *ic = &sc->sc_ic;
 215         struct ieee80211vap *vap = NULL;
 216         struct ath_hal *ah = sc->sc_ah;
 217 -       u_int32_t prev_clamped_maxtxpower = 0;
 218 -       u_int32_t new_clamped_maxtxpower = 0;
 219
 220         /* Determine the previous value of maxtxpower */
 221 -       prev_clamped_maxtxpower = ath_get_clamped_maxtxpower(sc);
 222 -       /* Determine the real maximum txpower the card can support */
 223 -       ic->ic_txpowlimit = ath_get_real_maxtxpower(sc);
 224 -       /* Grab the new maxtxpower setting (which may have changed) */
 225 -       new_clamped_maxtxpower = ic->ic_newtxpowlimit;
 226 -       /* Make sure the change is within limits, clamp it otherwise */
 227 -       if (ic->ic_newtxpowlimit > ic->ic_txpowlimit)
 228 -               new_clamped_maxtxpower = ic->ic_txpowlimit;
 229 -       /* Search for the VAP that needs a txpow change, if any */
 230 -       TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
 231 -               if (!tpc || ic->ic_newtxpowlimit != vap->iv_bss->ni_txpower) {
 232 -                       vap->iv_bss->ni_txpower = new_clamped_maxtxpower;
 233 -                       ieee80211_iterate_nodes(&vap->iv_ic->ic_sta,
 234 -                                       set_node_txpower,
 235 -                                       &new_clamped_maxtxpower);
 236 -               }
 237 -       }
 238 -
 239 -       /* Store the assigned (clamped) maximum txpower and update the HAL */
 240 -       sc->sc_curtxpow = new_clamped_maxtxpower;
 241 -       if (new_clamped_maxtxpower != prev_clamped_maxtxpower)
 242 -               ath_hal_settxpowlimit(ah, new_clamped_maxtxpower);
 243 +       ath_set_clamped_maxtxpower(sc, ic->ic_txpowlimit);
 244 +       ic->ic_cur_txpower = ath_get_clamped_maxtxpower(sc);
 245  }
 246
 247  #ifdef ATH_SUPERG_XR