package/mac80211/patches/540-wds_assoc_dummyframe.patch

   1 --- a/net/mac80211/mlme.c
   2 +++ b/net/mac80211/mlme.c
   3 @@ -312,6 +312,38 @@ void ieee80211_send_nullfunc(struct ieee
   4         ieee80211_tx_skb(sdata, skb);
   5  }
   6
   7 +static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
   8 +                                         struct ieee80211_sub_if_data *sdata)
   9 +{
  10 +       struct sk_buff *skb;
  11 +       struct ieee80211_hdr *nullfunc;
  12 +       __le16 fc;
  13 +
  14 +       if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
  15 +               return;
  16 +
  17 +       skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
  18 +       if (!skb) {
  19 +               printk(KERN_DEBUG "%s: failed to allocate buffer for 4addr "
  20 +                      "nullfunc frame\n", sdata->name);
  21 +               return;
  22 +       }
  23 +       skb_reserve(skb, local->hw.extra_tx_headroom);
  24 +
  25 +       nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
  26 +       memset(nullfunc, 0, 30);
  27 +       fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
  28 +                        IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
  29 +       nullfunc->frame_control = fc;
  30 +       memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
  31 +       memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
  32 +       memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
  33 +       memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
  34 +
  35 +       IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
  36 +       ieee80211_tx_skb(sdata, skb);
  37 +}
  38 +
  39  /* spectrum management related things */
  40  static void ieee80211_chswitch_work(struct work_struct *work)
  41  {
  42 @@ -1120,6 +1152,13 @@ static bool ieee80211_assoc_success(stru
  43         ieee80211_set_associated(sdata, cbss, changed);
  44
  45         /*
  46 +        * If we're using 4-addr mode, let the AP know that we're
  47 +        * doing so, so that it can create the STA VLAN on its side
  48 +        */
  49 +       if (ifmgd->use_4addr)
  50 +               ieee80211_send_4addr_nullfunc(local, sdata);
  51 +
  52 +       /*
  53          * Start timer to probe the connection to the AP now.
  54          * Also start the timer that will detect beacon loss.
  55          */
  56 --- a/net/mac80211/rx.c
  57 +++ b/net/mac80211/rx.c
  58 @@ -1111,6 +1111,18 @@ ieee80211_rx_h_sta_process(struct ieee80
  59         if (ieee80211_is_nullfunc(hdr->frame_control) ||
  60             ieee80211_is_qos_nullfunc(hdr->frame_control)) {
  61                 I802_DEBUG_INC(rx->local->rx_handlers_drop_nullfunc);
  62 +
  63 +               /*
  64 +                * If we receive a 4-addr nullfunc frame from a STA
  65 +                * that was not moved to a 4-addr STA vlan yet, drop
  66 +                * the frame to the monitor interface, to make sure
  67 +                * that hostapd sees it
  68 +                */
  69 +               if (ieee80211_has_a4(hdr->frame_control) &&
  70 +                   (rx->sdata->vif.type == NL80211_IFTYPE_AP ||
  71 +                    (rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
  72 +                     !rx->sdata->u.vlan.sta)))
  73 +                       return RX_DROP_MONITOR;
  74                 /*
  75                  * Update counter and free packet here to avoid
  76                  * counting this as a dropped packed.