madwifi: fix some potential null pointer derefs with wds

SVN-Revision: 19322

package/madwifi/patches/370-wdsvap.patch

@@ -794,7 +794,7 @@
  			vap->iv_stats.is_rx_mgtdiscard++;
  			return;
  		}
-@@ -3471,13 +3519,54 @@ ieee80211_recv_mgmt(struct ieee80211vap 
+@@ -3471,13 +3519,56 @@ ieee80211_recv_mgmt(struct ieee80211vap 
  		 */
  		if (ic->ic_flags & IEEE80211_F_SCAN) {
  			ieee80211_add_scan(vap, &scan, wh, subtype, rssi, rtsf);
@@ -822,13 +822,15 @@
 +					if (!memcmp(avp->wds_mac, wh->i_addr2, IEEE80211_ADDR_LEN)) {
 +						if (avp->iv_state != IEEE80211_S_RUN)
 +							continue;
++						if (!avp->iv_wdsnode)
++							continue;
 +						found = 1;
 +						break;
 +					}
 +				}
 +				if (found)
 +					ni = ni_or_null = avp->iv_wdsnode;
-+			} else if (vap->iv_opmode == IEEE80211_M_WDS) {
++			} else if ((vap->iv_opmode == IEEE80211_M_WDS) && vap->iv_wdsnode) {
 +				found = 1;
 +				ni = ni_or_null = vap->iv_wdsnode;
 +			}
@@ -854,7 +856,7 @@
  			} else {
  				/*
  				 * Copy data from beacon to neighbor table.
-@@ -3490,6 +3579,7 @@ ieee80211_recv_mgmt(struct ieee80211vap 
+@@ -3490,6 +3581,7 @@ ieee80211_recv_mgmt(struct ieee80211vap 
  				IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3);
  				memcpy(ni->ni_tstamp.data, scan.tstamp,
  					sizeof(ni->ni_tstamp));

package/madwifi/patches/387-maxassoc.patch

@@ -56,7 +56,7 @@
  	/*
 --- a/net80211/ieee80211_input.c
 +++ b/net80211/ieee80211_input.c
-@@ -4018,7 +4018,26 @@ ieee80211_recv_mgmt(struct ieee80211vap 
+@@ -4020,7 +4020,26 @@ ieee80211_recv_mgmt(struct ieee80211vap 
  			vap->iv_stats.is_rx_assoc_norate++;
  			return;
  		}

package/madwifi/patches/390-frame_type.patch

@@ -1,6 +1,6 @@
 --- a/net80211/ieee80211_input.c
 +++ b/net80211/ieee80211_input.c
-@@ -4441,7 +4441,9 @@ ath_eth_type_trans(struct sk_buff *skb, 
+@@ -4443,7 +4443,9 @@ ath_eth_type_trans(struct sk_buff *skb, 
  		if (memcmp(eth->h_dest, dev->dev_addr, ETH_ALEN))
  			skb->pkt_type = PACKET_OTHERHOST;
  

package/madwifi/patches/393-mbss_vap_auth.patch

@@ -327,7 +327,7 @@
  			int found = 0;
  
  			IEEE80211_LOCK_IRQ(vap->iv_ic);
-@@ -3551,10 +3561,12 @@ ieee80211_recv_mgmt(struct ieee80211vap 
+@@ -3553,10 +3563,12 @@ ieee80211_recv_mgmt(struct ieee80211vap 
  					ni->ni_associd |= 0xc000;
  					avp->iv_wdsnode = ieee80211_ref_node(ni);
  					IEEE80211_UNLOCK_IRQ(ic);
@@ -341,7 +341,7 @@
  			} else {
  				/*
  				 * Copy data from beacon to neighbor table.
-@@ -3593,6 +3605,8 @@ ieee80211_recv_mgmt(struct ieee80211vap 
+@@ -3595,6 +3607,8 @@ ieee80211_recv_mgmt(struct ieee80211vap 
  				ni->ni_rssi = rssi;
  				ni->ni_rtsf = rtsf;
  				ni->ni_last_rx = jiffies;

package/madwifi/patches/394-probereq.patch

@@ -1,6 +1,6 @@
 --- a/net80211/ieee80211_input.c
 +++ b/net80211/ieee80211_input.c
-@@ -3619,6 +3619,8 @@ ieee80211_recv_mgmt(struct ieee80211vap 
+@@ -3621,6 +3621,8 @@ ieee80211_recv_mgmt(struct ieee80211vap 
  			vap->iv_stats.is_rx_mgtdiscard++;
  			return;
  		}

package/madwifi/patches/441-fix_ibss_node_handling.patch

@@ -44,8 +44,8 @@
  			if (dir != IEEE80211_FC1_DIR_NODS) {
  				IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
  					wh, "data", "invalid dir 0x%x", dir);
-@@ -3556,6 +3561,11 @@ ieee80211_recv_mgmt(struct ieee80211vap 
- 			} else if (vap->iv_opmode == IEEE80211_M_WDS) {
+@@ -3558,6 +3563,11 @@ ieee80211_recv_mgmt(struct ieee80211vap 
+ 			} else if ((vap->iv_opmode == IEEE80211_M_WDS) && vap->iv_wdsnode) {
  				found = 1;
  				ni = ni_or_null = vap->iv_wdsnode;
 +			} else if (vap->iv_opmode == IEEE80211_M_IBSS) {
@@ -56,7 +56,7 @@
  			}
  			IEEE80211_UNLOCK_IRQ(vap->iv_ic);
  
-@@ -3684,19 +3694,8 @@ ieee80211_recv_mgmt(struct ieee80211vap 
+@@ -3686,19 +3696,8 @@ ieee80211_recv_mgmt(struct ieee80211vap 
  			vap->iv_stats.is_rx_ssidmismatch++; /*XXX*/
  			return;
  		}

package/madwifi/patches/451-ibss_race_fix.patch

@@ -53,13 +53,13 @@
  			int found = 0;
  
  			IEEE80211_LOCK_IRQ(vap->iv_ic);
-@@ -3568,14 +3561,12 @@ ieee80211_recv_mgmt(struct ieee80211vap 
+@@ -3570,14 +3563,12 @@ ieee80211_recv_mgmt(struct ieee80211vap 
  					}
  				}
  				if (found)
 -					ni = ni_or_null = avp->iv_wdsnode;
 +					tni = ieee80211_ref_node(avp->iv_wdsnode);
- 			} else if (vap->iv_opmode == IEEE80211_M_WDS) {
+ 			} else if ((vap->iv_opmode == IEEE80211_M_WDS) && vap->iv_wdsnode) {
  				found = 1;
 -				ni = ni_or_null = vap->iv_wdsnode;
 -			} else if (vap->iv_opmode == IEEE80211_M_IBSS) {
@@ -72,7 +72,7 @@
  				found = 1;
  			}
  			IEEE80211_UNLOCK_IRQ(vap->iv_ic);
-@@ -3583,20 +3574,21 @@ ieee80211_recv_mgmt(struct ieee80211vap 
+@@ -3585,20 +3576,21 @@ ieee80211_recv_mgmt(struct ieee80211vap 
  			if (!found)
  				break;
  
@@ -100,7 +100,7 @@
  			} else {
  				/*
  				 * Copy data from beacon to neighbor table.
-@@ -3604,39 +3596,38 @@ ieee80211_recv_mgmt(struct ieee80211vap 
+@@ -3606,39 +3598,38 @@ ieee80211_recv_mgmt(struct ieee80211vap 
  				 * ieee80211_add_neighbor(), so we just copy
  				 * everything over to be safe.
  				 */