package/madwifi/patches/415-chan_switch.patch

   1 --- a/net80211/ieee80211_beacon.c
   2 +++ b/net80211/ieee80211_beacon.c
   3 @@ -224,18 +224,18 @@ ieee80211_beacon_alloc(struct ieee80211_
   4         pktlen = 8                                      /* time stamp */
   5                  + sizeof(u_int16_t)                    /* beacon interval */
   6                  + sizeof(u_int16_t)                    /* capability information */
   7 -                + 2 + ni->ni_esslen                    /* ssid */
   8 +                + 2 + IEEE80211_NWID_LEN                       /* ssid */
   9                  + 2 + IEEE80211_RATE_SIZE              /* supported rates */
  10                  + 7                                    /* FH/DS parameters max(7,3) */
  11 -                + 2 + 4 + vap->iv_tim_len              /* IBSS/TIM parameter set*/
  12 +                + sizeof(struct ieee80211_tim_ie) + 128 /* IBSS/TIM parameter set*/
  13                  + ic->ic_country_ie.country_len + 2    /* country code */
  14                  + 3                                    /* power constraint */
  15                  + 5                                    /* channel switch announcement */
  16                  + 3                                    /* ERP */
  17                  + 2 + (IEEE80211_RATE_MAXSIZE - IEEE80211_RATE_SIZE) /* Ext. Supp. Rates */
  18 -                + (vap->iv_caps & IEEE80211_C_WME ?    /* WME */
  19 +                + (ic->ic_caps & IEEE80211_C_WME ?     /* WME */
  20                         sizeof(struct ieee80211_wme_param) : 0)
  21 -                + (vap->iv_caps & IEEE80211_C_WPA ?    /* WPA 1+2 */
  22 +                + (ic->ic_caps & IEEE80211_C_WPA ?     /* WPA 1+2 */
  23                         2 * sizeof(struct ieee80211_ie_wpa) : 0)
  24                  + sizeof(struct ieee80211_ie_athAdvCap)
  25  #ifdef ATH_SUPERG_XR
  26 @@ -290,17 +290,26 @@ ieee80211_beacon_update(struct ieee80211
  27         IEEE80211_LOCK_IRQ(ic);
  28
  29         /* Check if we need to change channel right now */
  30 -       if ((ic->ic_flags & IEEE80211_F_DOTH) &&
  31 -           (vap->iv_flags & IEEE80211_F_CHANSWITCH)) {
  32 -               struct ieee80211_channel *c =
  33 +       if (ic->ic_flags & IEEE80211_F_CHANSWITCH) {
  34 +               struct ieee80211_channel *c =
  35                         ieee80211_doth_findchan(vap, ic->ic_chanchange_chan);
  36 -
  37 -               if (!vap->iv_chanchange_count && !c) {
  38 -                       vap->iv_flags &= ~IEEE80211_F_CHANSWITCH;
  39 -                       ic->ic_flags &= ~IEEE80211_F_CHANSWITCH;
  40 -               } else if (vap->iv_chanchange_count &&
  41 -                          ((!ic->ic_chanchange_tbtt) ||
  42 -                           (vap->iv_chanchange_count == ic->ic_chanchange_tbtt))) {
  43 +               struct ieee80211vap *avp;
  44 +               int do_switch = 1;
  45 +
  46 +               TAILQ_FOREACH(avp, &ic->ic_vaps, iv_next) {
  47 +                       if (!(avp->iv_flags & IEEE80211_F_CHANSWITCH))
  48 +                               continue;
  49 +
  50 +                       do_switch = 0;
  51 +                       break;
  52 +               }
  53 +               if (vap->iv_flags & IEEE80211_F_CHANSWITCH) {
  54 +                       if (vap->iv_chanchange_count-- <= 1) {
  55 +                               vap->iv_flags &= ~IEEE80211_F_CHANSWITCH;
  56 +                               vap->iv_chanchange_count = 0;
  57 +                       }
  58 +               }
  59 +               if (do_switch) {
  60                         u_int8_t *frm;
  61
  62                         IEEE80211_DPRINTF(vap, IEEE80211_MSG_DOTH,
  63 @@ -316,16 +325,7 @@ ieee80211_beacon_update(struct ieee80211
  64                         } else
  65                                 ic->ic_bsschan = c;
  66
  67 -                       skb_pull(skb, sizeof(struct ieee80211_frame));
  68 -                       skb_trim(skb, 0);
  69 -                       frm = skb->data;
  70 -                       skb_put(skb, ieee80211_beacon_init(ni, bo, frm) - frm);
  71 -                       skb_push(skb, sizeof(struct ieee80211_frame));
  72 -
  73 -                       vap->iv_chanchange_count = 0;
  74 -                       vap->iv_flags &= ~IEEE80211_F_CHANSWITCH;
  75                         ic->ic_flags &= ~IEEE80211_F_CHANSWITCH;
  76 -
  77                         /* NB: Only for the first VAP to get here, and when we
  78                          * have a valid channel to which to change. */
  79                         if (c && (ic->ic_curchan != c)) {
  80 @@ -488,22 +488,20 @@ ieee80211_beacon_update(struct ieee80211
  81
  82         if (IEEE80211_IS_MODE_BEACON(vap->iv_opmode)) {
  83
  84 -               if ((ic->ic_flags & IEEE80211_F_DOTH) &&
  85 -                   (ic->ic_flags & IEEE80211_F_CHANSWITCH)) {
  86 +               if (ic->ic_flags & IEEE80211_F_CHANSWITCH) {
  87                         struct ieee80211_ie_csa *csa_ie =
  88                                 (struct ieee80211_ie_csa *)bo->bo_chanswitch;
  89
  90 -                       IEEE80211_DPRINTF(vap, IEEE80211_MSG_DOTH,
  91 +                       if (csa_ie->csa_len == 0) {
  92 +                               IEEE80211_DPRINTF(vap, IEEE80211_MSG_DOTH,
  93                                         "%s: Sending 802.11h chanswitch IE: "
  94                                         "%d/%d\n", __func__,
  95                                         ic->ic_chanchange_chan,
  96                                         ic->ic_chanchange_tbtt);
  97 -                       if (!vap->iv_chanchange_count) {
  98 -                               vap->iv_flags |= IEEE80211_F_CHANSWITCH;
  99
 100                                 /* copy out trailer to open up a slot */
 101                                 memmove(bo->bo_chanswitch + sizeof(*csa_ie),
 102 -                                       bo->bo_chanswitch,
 103 +                                       bo->bo_chanswitch,
 104                                         bo->bo_chanswitch_trailerlen);
 105
 106                                 /* add ie in opened slot */
 107 @@ -523,17 +521,15 @@ ieee80211_beacon_update(struct ieee80211
 108                                 bo->bo_ath_caps += sizeof(*csa_ie);
 109                                 bo->bo_xr += sizeof(*csa_ie);
 110
 111 -                               /* indicate new beacon length so other layers
 112 +                               /* indicate new beacon length so other layers
 113                                  * may manage memory */
 114                                 skb_put(skb, sizeof(*csa_ie));
 115                                 len_changed = 1;
 116 -                       } else if(csa_ie->csa_count)
 117 -                               csa_ie->csa_count--;
 118 -
 119 -                       vap->iv_chanchange_count++;
 120 -                       IEEE80211_DPRINTF(vap, IEEE80211_MSG_DOTH,
 121 -                               "%s: CHANSWITCH IE, change in %d TBTT\n",
 122 -                               __func__, csa_ie->csa_count);
 123 +
 124 +                               IEEE80211_DPRINTF(vap, IEEE80211_MSG_DOTH,
 125 +                                       "%s: CHANSWITCH IE, change in %d TBTT\n",
 126 +                                       __func__, csa_ie->csa_count);
 127 +                       }
 128                 }
 129  #ifdef ATH_SUPERG_XR
 130                 if (vap->iv_flags & IEEE80211_F_XRUPDATE) {
 131 --- a/net80211/ieee80211_wireless.c
 132 +++ b/net80211/ieee80211_wireless.c
 133 @@ -699,39 +699,11 @@ ieee80211_ioctl_siwfreq(struct net_devic
 134                         if (c == NULL)                  /* no channel */
 135                                 return -EINVAL;
 136                 }
 137 -               /*
 138 -                * Fine tune channel selection based on desired mode:
 139 -                *   if 11b is requested, find the 11b version of any
 140 -                *      11g channel returned,
 141 -                *   if static turbo, find the turbo version of any
 142 -                *      11a channel return,
 143 -                *   otherwise we should be ok with what we've got.
 144 -                */
 145 -               switch (vap->iv_des_mode) {
 146 -               case IEEE80211_MODE_11B:
 147 -                       if (IEEE80211_IS_CHAN_ANYG(c)) {
 148 -                               c2 = findchannel(ic, i, IEEE80211_MODE_11B);
 149 -                               /* NB: should not happen, =>'s 11g w/o 11b */
 150 -                               if (c2 != NULL)
 151 -                                       c = c2;
 152 -                       }
 153 -                       break;
 154 -               case IEEE80211_MODE_TURBO_A:
 155 -                       if (IEEE80211_IS_CHAN_A(c)) {
 156 -                               c2 = findchannel(ic, i, IEEE80211_MODE_TURBO_A);
 157 -                               if (c2 != NULL)
 158 -                                       c = c2;
 159 -                       }
 160 -                       break;
 161 -               default:                /* NB: no static turboG */
 162 -                       break;
 163 -               }
 164 +
 165                 if (ieee80211_check_mode_consistency(ic, vap->iv_des_mode, c)) {
 166                         if (vap->iv_opmode == IEEE80211_M_HOSTAP)
 167                                 return -EINVAL;
 168                 }
 169 -               if ((vap->iv_state == IEEE80211_S_RUN) && (c == vap->iv_des_chan))
 170 -                       return 0;                       /* no change, return */
 171
 172                 /* Don't allow to change to channel with radar found */
 173                 if (c->ic_flags & IEEE80211_CHAN_RADAR)
 174 @@ -4634,7 +4606,13 @@ static void
 175  pre_announced_chanswitch(struct net_device *dev, u_int32_t channel, u_int32_t tbtt) {
 176         struct ieee80211vap *vap = dev->priv;
 177         struct ieee80211com *ic = vap->iv_ic;
 178 +       struct ieee80211vap *avp;
 179 +
 180         /* now flag the beacon update to include the channel switch IE */
 181 +       TAILQ_FOREACH(avp, &ic->ic_vaps, iv_next) {
 182 +               avp->iv_flags |= IEEE80211_F_CHANSWITCH;
 183 +               avp->iv_chanchange_count = tbtt;
 184 +       }
 185         ic->ic_flags |= IEEE80211_F_CHANSWITCH;
 186         ic->ic_chanchange_chan = channel;
 187         ic->ic_chanchange_tbtt = tbtt;