package/madwifi/patches/441-fix_ibss_node_handling.patch

   1 --- a/ath/if_ath.c
   2 +++ b/ath/if_ath.c
   3 @@ -6641,10 +6641,8 @@ static void
   4  ath_recv_mgmt(struct ieee80211vap * vap, struct ieee80211_node *ni_or_null,
   5         struct sk_buff *skb, int subtype, int rssi, u_int64_t rtsf)
   6  {
   7 +       const struct ieee80211_frame *wh = (struct ieee80211_frame *)skb->data;
   8         struct ath_softc *sc = netdev_priv(vap->iv_ic->ic_dev);
   9 -#ifdef AR_DEBUG
  10 -        struct ieee80211_frame *wh = (struct ieee80211_frame *)skb->data;
  11 -#endif
  12         struct ieee80211_node * ni = ni_or_null;
  13         u_int64_t hw_tsf, beacon_tsf;
  14         u_int32_t hw_tu, beacon_tu, intval;
  15 @@ -6686,7 +6684,7 @@ ath_recv_mgmt(struct ieee80211vap * vap,
  16                 }
  17                 if ((vap->iv_opmode == IEEE80211_M_IBSS) &&
  18                                 (sc->sc_opmode == HAL_M_HOSTAP) &&
  19 -                               IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) {
  20 +                               IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_bssid)) {
  21                         /* In this mode, we drive the HAL in HOSTAP mode. Hence
  22                          * we do the IBSS merging in software. Also do not merge
  23                          * if the difference it too small. Otherwise we are playing
  24 --- a/net80211/ieee80211_input.c
  25 +++ b/net80211/ieee80211_input.c
  26 @@ -311,7 +311,8 @@ ieee80211_input(struct ieee80211vap * va
  27                         }
  28                         /* Do not try to find a node reference if the packet really did come from the BSS */
  29                         if (type == IEEE80211_FC0_TYPE_DATA && ni == vap->iv_bss &&
  30 -                                       !IEEE80211_ADDR_EQ(vap->iv_bss->ni_macaddr, wh->i_addr2)) {
  31 +                                       !IEEE80211_ADDR_EQ(vap->iv_bss->ni_macaddr, wh->i_addr2) &&
  32 +                                       IEEE80211_ADDR_EQ(vap->iv_bssid, wh->i_addr3)) {
  33                                 /* Try to find sender in local node table. */
  34                                 ni = ieee80211_find_node(&ic->ic_sta, wh->i_addr2);
  35                                 if (ni == NULL) {
  36 @@ -513,6 +514,10 @@ ieee80211_input(struct ieee80211vap * va
  37                         break;
  38                 case IEEE80211_M_IBSS:
  39                 case IEEE80211_M_AHDEMO:
  40 +                       /* ignore foreign data frames */
  41 +                       if (ni == vap->iv_bss)
  42 +                               goto out;
  43 +
  44                         if (dir != IEEE80211_FC1_DIR_NODS) {
  45                                 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
  46                                         wh, "data", "invalid dir 0x%x", dir);
  47 @@ -3556,6 +3561,11 @@ ieee80211_recv_mgmt(struct ieee80211vap
  48                         } else if (vap->iv_opmode == IEEE80211_M_WDS) {
  49                                 found = 1;
  50                                 ni = ni_or_null = vap->iv_wdsnode;
  51 +                       } else if (vap->iv_opmode == IEEE80211_M_IBSS) {
  52 +                               ni_or_null = ieee80211_find_node(&ic->ic_sta, wh->i_addr2);
  53 +                               if (ni_or_null)
  54 +                                       ni = ni_or_null;
  55 +                               found = 1;
  56                         }
  57                         IEEE80211_UNLOCK_IRQ(vap->iv_ic);
  58
  59 @@ -3684,19 +3694,8 @@ ieee80211_recv_mgmt(struct ieee80211vap
  60                         vap->iv_stats.is_rx_ssidmismatch++; /*XXX*/
  61                         return;
  62                 }
  63 -               if (ni == vap->iv_bss) {
  64 -                       if (vap->iv_opmode == IEEE80211_M_IBSS) {
  65 -                               /*
  66 -                                * XXX Cannot tell if the sender is operating
  67 -                                * in ibss mode.  But we need a new node to
  68 -                                * send the response so blindly add them to the
  69 -                                * neighbor table.
  70 -                                */
  71 -                               ni = ieee80211_fakeup_adhoc_node(vap,
  72 -                                       wh->i_addr2);
  73 -                       } else {
  74 -                               ni = ieee80211_dup_bss(vap, wh->i_addr2, 1);
  75 -                       }
  76 +               if (ni == vap->iv_bss && vap->iv_opmode != IEEE80211_M_IBSS) {
  77 +                       ni = ieee80211_dup_bss(vap, wh->i_addr2, 1);
  78                         if (ni == NULL)
  79                                 return;
  80                         allocbs = 1;
  81 --- a/net80211/ieee80211_node.c
  82 +++ b/net80211/ieee80211_node.c
  83 @@ -601,6 +601,8 @@ ieee80211_ibss_merge(struct ieee80211_no
  84                 ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long",
  85                 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long",
  86                 ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "");
  87 +       if (!IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bssid))
  88 +               ieee80211_node_table_reset(&vap->iv_ic->ic_sta, vap);
  89         return ieee80211_sta_join1(ieee80211_ref_node(ni));
  90  }
  91  EXPORT_SYMBOL(ieee80211_ibss_merge);