ath9k: add a temporary uci option for setting the channel bandwidth

[openwrt.git] / package / madwifi / patches / 389-autochannel.patch

diff --git a/package/madwifi/patches/389-autochannel.patch b/package/madwifi/patches/389-autochannel.patch
index 0e4cad8..548f09e 100644 (file)
--- a/package/madwifi/patches/389-autochannel.patch
+++ b/package/madwifi/patches/389-autochannel.patch
@@ -8,7 +8,7 @@
  
  /* calibrate every 30 secs in steady state but check every second at first. */
  static int ath_calinterval = ATH_SHORT_CALINTERVAL;
  
  /* calibrate every 30 secs in steady state but check every second at first. */
  static int ath_calinterval = ATH_SHORT_CALINTERVAL;

-@@ -2579,6 +2580,7 @@ ath_init(struct net_device *dev)
+@@ -2581,6 +2582,7 @@ ath_init(struct net_device *dev)

         * be followed by initialization of the appropriate bits
         * and then setup of the interrupt mask.
         */
         * be followed by initialization of the appropriate bits
         * and then setup of the interrupt mask.
         */


@@ -16,10 +16,14 @@
        sc->sc_curchan.channel = ic->ic_curchan->ic_freq;
        sc->sc_curchan.channelFlags = ath_chan2flags(ic->ic_curchan);
        if (!ath_hal_reset(ah, sc->sc_opmode, &sc->sc_curchan, AH_FALSE, &status)) {
        sc->sc_curchan.channel = ic->ic_curchan->ic_freq;
        sc->sc_curchan.channelFlags = ath_chan2flags(ic->ic_curchan);
        if (!ath_hal_reset(ah, sc->sc_opmode, &sc->sc_curchan, AH_FALSE, &status)) {

-@@ -2913,6 +2915,40 @@ ath_hw_check_atim(struct ath_softc *sc, 
+@@ -2914,6 +2916,48 @@ ath_hw_check_atim(struct ath_softc *sc,
+       return 0;

  }
  
  }
  

- 
++#define AR5K_MIBC       0x0040
++#define AR5K_MIBC_FREEZE   (1 << 1)
++#define AR5K_TXFC       0x80ec
++#define AR5K_RXFC       0x80f0

 +#define AR5K_RXCLEAR  0x80f4
 +#define AR5K_CYCLES           0x80f8
 +static void
 +#define AR5K_RXCLEAR  0x80f4
 +#define AR5K_CYCLES           0x80f8
 +static void


@@ -36,13 +40,15 @@
 +      if (!ic->ic_curchan || (ic->ic_curchan == IEEE80211_CHAN_ANYC))
 +              return;
 +
 +      if (!ic->ic_curchan || (ic->ic_curchan == IEEE80211_CHAN_ANYC))
 +              return;
 +

++      OS_REG_WRITE(ah, AR5K_MIBC, AR5K_MIBC_FREEZE);

 +      rx = OS_REG_READ(ah, AR5K_RXCLEAR);
 +      cc = OS_REG_READ(ah, AR5K_CYCLES);
 +      rx = OS_REG_READ(ah, AR5K_RXCLEAR);
 +      cc = OS_REG_READ(ah, AR5K_CYCLES);

++

 +      if (!cc)
 +              return;
 +
 +      if (rx > cc)
 +      if (!cc)
 +              return;
 +
 +      if (rx > cc)

-+              return; /* wraparound */
++              return; /* should not happen */

 +
 +      if (sc->sc_last_chan)
 +              sc->sc_last_chan->ic_idletime = 100 * (cc - rx) / cc;
 +
 +      if (sc->sc_last_chan)
 +              sc->sc_last_chan->ic_idletime = 100 * (cc - rx) / cc;


@@ -50,14 +56,16 @@
 +
 +      OS_REG_WRITE(ah, AR5K_RXCLEAR, 0);
 +      OS_REG_WRITE(ah, AR5K_CYCLES, 0);
 +
 +      OS_REG_WRITE(ah, AR5K_RXCLEAR, 0);
 +      OS_REG_WRITE(ah, AR5K_CYCLES, 0);

++      OS_REG_WRITE(ah, AR5K_TXFC, 0);
++      OS_REG_WRITE(ah, AR5K_RXFC, 0);
++      OS_REG_WRITE(ah, AR5K_MIBC, 0);

 +}
 +#undef AR5K_RXCLEAR
 +#undef AR5K_CYCLES
 +}
 +#undef AR5K_RXCLEAR
 +#undef AR5K_CYCLES

-+
+ 

  /*
   * Reset the hardware w/o losing operational state.  This is
  /*
   * Reset the hardware w/o losing operational state.  This is

-  * basically a more efficient way of doing ath_stop, ath_init,
-@@ -2939,6 +2975,7 @@ ath_reset(struct net_device *dev)
+@@ -2941,6 +2985,7 @@ ath_reset(struct net_device *dev)

         * Convert to a HAL channel description with the flags
         * constrained to reflect the current operating mode.
         */
         * Convert to a HAL channel description with the flags
         * constrained to reflect the current operating mode.
         */


@@ -65,17 +73,32 @@
        c = ic->ic_curchan;
        sc->sc_curchan.channel = c->ic_freq;
        sc->sc_curchan.channelFlags = ath_chan2flags(c);
        c = ic->ic_curchan;
        sc->sc_curchan.channel = c->ic_freq;
        sc->sc_curchan.channelFlags = ath_chan2flags(c);

-@@ -9019,6 +9056,7 @@ ath_chan_set(struct ath_softc *sc, struc
+@@ -9023,6 +9068,7 @@ ath_chan_set(struct ath_softc *sc, struc

        u_int8_t channel_change_required = 0;
        struct timeval tv;
  
        u_int8_t channel_change_required = 0;
        struct timeval tv;
  

-+      ath_fetch_idle_time(sc);
++

        /*
         * Convert to a HAL channel description with
         * the flags constrained to reflect the current
        /*
         * Convert to a HAL channel description with
         * the flags constrained to reflect the current

+@@ -9031,6 +9077,14 @@ ath_chan_set(struct ath_softc *sc, struc
+       memset(&hchan, 0, sizeof(HAL_CHANNEL));
+       hchan.channel = chan->ic_freq;
+       hchan.channelFlags = ath_chan2flags(chan);
++
++      /* don't do duplicate channel changes, but do
++       * store the available idle time */
++      ath_fetch_idle_time(sc);
++      if ((sc->sc_curchan.channel == hchan.channel) &&
++              (sc->sc_curchan.channelFlags == hchan.channelFlags))
++              return 0;
++
+       KASSERT(hchan.channel != 0,
+               ("bogus channel %u/0x%x", hchan.channel, hchan.channelFlags));
+       do_gettimeofday(&tv);

 --- a/ath/if_athvar.h
 +++ b/ath/if_athvar.h
 --- a/ath/if_athvar.h
 +++ b/ath/if_athvar.h

-@@ -773,6 +773,7 @@ struct ath_softc {
+@@ -774,6 +774,7 @@ struct ath_softc {

        struct ieee80211vap **sc_bslot;         /* beacon xmit slots */
        int sc_bnext;                           /* next slot for beacon xmit */
  
        struct ieee80211vap **sc_bslot;         /* beacon xmit slots */
        int sc_bnext;                           /* next slot for beacon xmit */
  


@@ -95,7 +118,7 @@
  #define       IEEE80211_CHAN_MAX      255
 --- a/net80211/ieee80211_scan_ap.c
 +++ b/net80211/ieee80211_scan_ap.c
  #define       IEEE80211_CHAN_MAX      255
 --- a/net80211/ieee80211_scan_ap.c
 +++ b/net80211/ieee80211_scan_ap.c

-@@ -423,6 +423,19 @@ pc_cmp_rssi(struct ap_state *as, struct 
+@@ -417,6 +417,19 @@ pc_cmp_rssi(struct ap_state *as, struct

  
  /* This function must be invoked with locks acquired */
  static int
  
  /* This function must be invoked with locks acquired */
  static int


@@ -115,7 +138,7 @@
  pc_cmp_samechan(struct ieee80211com *ic, struct ieee80211_channel *a,
                struct ieee80211_channel *b)
  {
  pc_cmp_samechan(struct ieee80211com *ic, struct ieee80211_channel *a,
                struct ieee80211_channel *b)
  {

-@@ -457,6 +470,7 @@ pc_cmp(const void *_a, const void *_b)
+@@ -451,6 +464,7 @@ pc_cmp(const void *_a, const void *_b)

  
        EVALUATE_CRITERION(radar, a, b);
        EVALUATE_CRITERION(keepmode, params, a, b);
  
        EVALUATE_CRITERION(radar, a, b);
        EVALUATE_CRITERION(keepmode, params, a, b);


@@ -123,3 +146,104 @@
        EVALUATE_CRITERION(sc, ic, a, b);
        /* XXX: rssi useless? pick_channel evaluates it anyway */
        EVALUATE_CRITERION(rssi, params->ss->ss_priv, a, b);
        EVALUATE_CRITERION(sc, ic, a, b);
        /* XXX: rssi useless? pick_channel evaluates it anyway */
        EVALUATE_CRITERION(rssi, params->ss->ss_priv, a, b);

+@@ -519,16 +533,9 @@ pick_channel(struct ieee80211_scan_state
+ #endif
+ 
+       best = NULL;
+-      best_rssi = 0xff; /* If signal is bigger than 0xff, we'd be melting. */
+ 
+       for (i = 0; i < ss_last; i++) {
+               c = &chans[i];
+-              benefit = best_rssi - as->as_maxrssi[c->chan->ic_ieee];
+-              sta_assoc = ic->ic_sta_assoc;
+-
+-              /* Don't switch... */
+-              if (benefit <= 0)
+-                      continue;
+ 
+               /* Verify channel is not marked for non-occupancy */
+               if (IEEE80211_IS_CHAN_RADAR(c->chan))
+@@ -546,31 +553,8 @@ pick_channel(struct ieee80211_scan_state
+                               break;
+               }
+ 
+-              if (sta_assoc != 0) {
+-                      int sl = ic->ic_cn_total - 
+-                              ic->ic_chan_nodes[c->chan->ic_ieee]; /* count */
+-                      if (ic->ic_sc_algorithm == IEEE80211_SC_LOOSE) {
+-                              int sl_max = ic->ic_sc_sldg * benefit;
+-                              sl = 1000 * sl / sta_assoc; /* permil */
+-                              IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
+-                                              "%s: chan %d, dB gained: %d, "
+-                                              "STAs lost: %d permil (max %d)\n",
+-                                              __func__, c->chan->ic_ieee, 
+-                                              benefit, sl, sl_max);
+-                              if (sl > sl_max)
+-                                      continue;
+-                      } else if (((ic->ic_sc_algorithm == 
+-                                               IEEE80211_SC_TIGHT) ||
+-                                      (ic->ic_sc_algorithm == 
+-                                               IEEE80211_SC_STRICT)) && 
+-                                      (sl > 0)) {
+-                              /* Break the loop as the subsequent chans 
+-                               * won't be better. */
+-                              break;
+-                      }
+-              }
+               best = c->chan;
+-              best_rssi = as->as_maxrssi[best->ic_ieee];
++              break;
+       }
+ 
+       if (best != NULL) {
+@@ -599,6 +583,9 @@ ap_end(struct ieee80211_scan_state *ss,
+               ("wrong opmode %u", vap->iv_opmode));
+ 
+       ic = vap->iv_ic;
++
++      /* record stats for the channel that was scanned last */
++      ic->ic_set_channel(ic);
+       bestchan = pick_channel(ss, vap, flags);
+       if (bestchan == NULL) {
+               if (ss->ss_last > 0) {
+--- a/net80211/ieee80211_scan.c
++++ b/net80211/ieee80211_scan.c
+@@ -1002,20 +1002,34 @@ ieee80211_scan_add_channels(struct ieee8
+ {
+       struct ieee80211_channel *c, *cg;
+       u_int modeflags;
++      int has_non_turbo = 0;
+       int i;
+ 
+       KASSERT(mode < ARRAY_SIZE(chanflags), ("Unexpected mode %u", mode));
+       modeflags = chanflags[mode];
+       for (i = 0; i < ic->ic_nchans; i++) {
+               c = &ic->ic_channels[i];
++              if (c->ic_flags & (IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO))
++                      continue;
++
++              has_non_turbo = 1;
++              break;
++      }
++      for (i = 0; i < ic->ic_nchans; i++) {
++              c = &ic->ic_channels[i];
+               if (c == NULL || isclr(ic->ic_chan_active, c->ic_ieee))
+                       continue;
+               if (c->ic_scanflags & IEEE80211_NOSCAN_SET)
+                       continue;
+-              if (modeflags &&
+-                      ((c->ic_flags & IEEE80211_CHAN_ALLTURBO) !=
+-                       (modeflags & IEEE80211_CHAN_ALLTURBO)))
+-                      continue;
++              if (modeflags) {
++                      if ((c->ic_flags & IEEE80211_CHAN_ALLTURBO) !=
++                               (modeflags & IEEE80211_CHAN_ALLTURBO))
++                              continue;
++              } else if (has_non_turbo) {
++                      if ((ss->ss_vap->iv_opmode == IEEE80211_M_HOSTAP) &&
++                              (c->ic_flags & (IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO)))
++                              continue;
++              }
+               if (mode == IEEE80211_MODE_AUTO) {
+                       /*
+                        * XXX special-case 11b/g channels so we select