From: Felix Fietkau <nbd@openwrt.org>
Date: Fri, 8 Jan 2010 16:55:15 +0000 (+0000)
Subject: mac80211: various wds related fixes
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=c418fd661fcf8dc575ae681ca4a61e5391215d83;p=openwrt%2Fstaging%2Faparcar.git

mac80211: various wds related fixes

SVN-Revision: 19076
---

diff --git a/package/mac80211/patches/550-wds_assoc_dummyframe.patch b/package/mac80211/patches/550-wds_assoc_dummyframe.patch
new file mode 100644
index 0000000000..9efb3ac6d2
--- /dev/null
+++ b/package/mac80211/patches/550-wds_assoc_dummyframe.patch
@@ -0,0 +1,76 @@
+--- a/net/mac80211/mlme.c
++++ b/net/mac80211/mlme.c
+@@ -312,6 +312,38 @@ void ieee80211_send_nullfunc(struct ieee
+ 	ieee80211_tx_skb(sdata, skb);
+ }
+ 
++static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
++					  struct ieee80211_sub_if_data *sdata)
++{
++	struct sk_buff *skb;
++	struct ieee80211_hdr *nullfunc;
++	__le16 fc;
++
++	if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
++		return;
++
++	skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
++	if (!skb) {
++		printk(KERN_DEBUG "%s: failed to allocate buffer for 4addr "
++		       "nullfunc frame\n", sdata->name);
++		return;
++	}
++	skb_reserve(skb, local->hw.extra_tx_headroom);
++
++	nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
++	memset(nullfunc, 0, 30);
++	fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
++			 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
++	nullfunc->frame_control = fc;
++	memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
++	memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
++	memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
++	memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
++
++	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
++	ieee80211_tx_skb(sdata, skb);
++}
++
+ /* spectrum management related things */
+ static void ieee80211_chswitch_work(struct work_struct *work)
+ {
+@@ -1120,6 +1152,13 @@ static bool ieee80211_assoc_success(stru
+ 	ieee80211_set_associated(sdata, cbss, changed);
+ 
+ 	/*
++	 * If we're using 4-addr mode, let the AP know that we're
++	 * doing so, so that it can create the STA VLAN on its side
++	 */
++	if (ifmgd->use_4addr)
++		ieee80211_send_4addr_nullfunc(local, sdata);
++
++	/*
+ 	 * Start timer to probe the connection to the AP now.
+ 	 * Also start the timer that will detect beacon loss.
+ 	 */
+--- a/net/mac80211/rx.c
++++ b/net/mac80211/rx.c
+@@ -1111,6 +1111,18 @@ ieee80211_rx_h_sta_process(struct ieee80
+ 	if (ieee80211_is_nullfunc(hdr->frame_control) ||
+ 	    ieee80211_is_qos_nullfunc(hdr->frame_control)) {
+ 		I802_DEBUG_INC(rx->local->rx_handlers_drop_nullfunc);
++
++		/*
++		 * If we receive a 4-addr nullfunc frame from a STA
++		 * that was not moved to a 4-addr STA vlan yet, drop
++		 * the frame to the monitor interface, to make sure
++		 * that hostapd sees it
++		 */
++		if (ieee80211_has_a4(hdr->frame_control) &&
++		    (rx->sdata->vif.type == NL80211_IFTYPE_AP ||
++		     (rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
++		      !rx->sdata->u.vlan.sta)))
++			return RX_DROP_MONITOR;
+ 		/*
+ 		 * Update counter and free packet here to avoid
+ 		 * counting this as a dropped packed.
diff --git a/package/mac80211/patches/560-vlan_sta_lookup.patch b/package/mac80211/patches/560-vlan_sta_lookup.patch
new file mode 100644
index 0000000000..ad15ca9746
--- /dev/null
+++ b/package/mac80211/patches/560-vlan_sta_lookup.patch
@@ -0,0 +1,98 @@
+--- a/net/mac80211/sta_info.c
++++ b/net/mac80211/sta_info.c
+@@ -119,6 +119,27 @@ struct sta_info *sta_info_get(struct iee
+ 	return sta;
+ }
+ 
++/*
++ * Get sta info either from the specified interface
++ * or from one of its vlans
++ */
++struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
++				  const u8 *addr)
++{
++	struct ieee80211_local *local = sdata->local;
++	struct sta_info *sta;
++
++	sta = rcu_dereference(local->sta_hash[STA_HASH(addr)]);
++	while (sta) {
++		if ((sta->sdata == sdata ||
++		     sta->sdata->bss == sdata->bss) &&
++		    memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
++			break;
++		sta = rcu_dereference(sta->hnext);
++	}
++	return sta;
++}
++
+ struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
+ 				     int idx)
+ {
+--- a/net/mac80211/sta_info.h
++++ b/net/mac80211/sta_info.h
+@@ -408,6 +408,9 @@ static inline u32 get_sta_flags(struct s
+ struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
+ 			      const u8 *addr);
+ 
++struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
++				  const u8 *addr);
++
+ static inline
+ void for_each_sta_info_type_check(struct ieee80211_local *local,
+ 				  const u8 *addr,
+--- a/net/mac80211/cfg.c
++++ b/net/mac80211/cfg.c
+@@ -148,7 +148,7 @@ static int ieee80211_add_key(struct wiph
+ 	rcu_read_lock();
+ 
+ 	if (mac_addr) {
+-		sta = sta_info_get(sdata, mac_addr);
++		sta = sta_info_get_bss(sdata, mac_addr);
+ 		if (!sta) {
+ 			ieee80211_key_free(key);
+ 			err = -ENOENT;
+@@ -179,7 +179,7 @@ static int ieee80211_del_key(struct wiph
+ 	if (mac_addr) {
+ 		ret = -ENOENT;
+ 
+-		sta = sta_info_get(sdata, mac_addr);
++		sta = sta_info_get_bss(sdata, mac_addr);
+ 		if (!sta)
+ 			goto out_unlock;
+ 
+@@ -226,7 +226,7 @@ static int ieee80211_get_key(struct wiph
+ 	rcu_read_lock();
+ 
+ 	if (mac_addr) {
+-		sta = sta_info_get(sdata, mac_addr);
++		sta = sta_info_get_bss(sdata, mac_addr);
+ 		if (!sta)
+ 			goto out;
+ 
+@@ -419,7 +419,7 @@ static int ieee80211_get_station(struct 
+ 
+ 	rcu_read_lock();
+ 
+-	sta = sta_info_get(sdata, mac);
++	sta = sta_info_get_bss(sdata, mac);
+ 	if (sta) {
+ 		ret = 0;
+ 		sta_set_sinfo(sta, sinfo);
+@@ -775,7 +775,7 @@ static int ieee80211_del_station(struct 
+ 	if (mac) {
+ 		rcu_read_lock();
+ 
+-		sta = sta_info_get(sdata, mac);
++		sta = sta_info_get_bss(sdata, mac);
+ 		if (!sta) {
+ 			rcu_read_unlock();
+ 			return -ENOENT;
+@@ -803,7 +803,7 @@ static int ieee80211_change_station(stru
+ 
+ 	rcu_read_lock();
+ 
+-	sta = sta_info_get(sdata, mac);
++	sta = sta_info_get_bss(sdata, mac);
+ 	if (!sta) {
+ 		rcu_read_unlock();
+ 		return -ENOENT;
diff --git a/package/mac80211/patches/570-4addr_vlan_check.patch b/package/mac80211/patches/570-4addr_vlan_check.patch
new file mode 100644
index 0000000000..7079957ee6
--- /dev/null
+++ b/package/mac80211/patches/570-4addr_vlan_check.patch
@@ -0,0 +1,15 @@
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -1051,8 +1051,11 @@ ieee80211_tx_prepare(struct ieee80211_su
+ 
+ 	hdr = (struct ieee80211_hdr *) skb->data;
+ 
+-	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
++	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
+ 		tx->sta = rcu_dereference(sdata->u.vlan.sta);
++		if (!tx->sta && sdata->dev->ieee80211_ptr->use_4addr)
++			return TX_DROP;
++	}
+ 	if (!tx->sta)
+ 		tx->sta = sta_info_get(sdata, hdr->addr1);
+