openwrt/package/mac80211/patches/000-mac80211_update.patch

Index: mac80211/include/linux/ieee80211.h
===================================================================
--- mac80211.orig/include/linux/ieee80211.h	2007-11-11 15:45:23.153490050 +0100
+++ mac80211/include/linux/ieee80211.h	2007-11-11 15:45:30.417904025 +0100
@@ -81,18 +81,18 @@
 
 
 /* miscellaneous IEEE 802.11 constants */
-#define IEEE80211_MAX_FRAG_THRESHOLD	2346
-#define IEEE80211_MAX_RTS_THRESHOLD	2347
+#define IEEE80211_MAX_FRAG_THRESHOLD	2352
+#define IEEE80211_MAX_RTS_THRESHOLD	2353
 #define IEEE80211_MAX_AID		2007
 #define IEEE80211_MAX_TIM_LEN		251
-#define IEEE80211_MAX_DATA_LEN		2304
 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
    6.2.1.1.2.
 
-   The figure in section 7.1.2 suggests a body size of up to 2312
-   bytes is allowed, which is a bit confusing, I suspect this
-   represents the 2304 bytes of real data, plus a possible 8 bytes of
-   WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
+   802.11e clarifies the figure in section 7.1.2. The frame body is
+   up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
+#define IEEE80211_MAX_DATA_LEN		2304
+/* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
+#define IEEE80211_MAX_FRAME_LEN		2352
 
 #define IEEE80211_MAX_SSID_LEN		32
 
Index: mac80211/include/linux/nl80211.h
===================================================================
--- mac80211.orig/include/linux/nl80211.h	2007-11-11 15:45:23.161490506 +0100
+++ mac80211/include/linux/nl80211.h	2007-11-11 15:45:30.421904255 +0100
@@ -25,7 +25,7 @@
  *	either a dump request on a %NL80211_ATTR_WIPHY or a specific get
  *	on an %NL80211_ATTR_IFINDEX is supported.
  * @NL80211_CMD_SET_INTERFACE: Set type of a virtual interface, requires
- 	%NL80211_ATTR_IFINDEX and %NL80211_ATTR_IFTYPE.
+ *	%NL80211_ATTR_IFINDEX and %NL80211_ATTR_IFTYPE.
  * @NL80211_CMD_NEW_INTERFACE: Newly created virtual interface or response
  *	to %NL80211_CMD_GET_INTERFACE. Has %NL80211_ATTR_IFINDEX,
  *	%NL80211_ATTR_WIPHY and %NL80211_ATTR_IFTYPE attributes. Can also
Index: mac80211/include/net/mac80211.h
===================================================================
--- mac80211.orig/include/net/mac80211.h	2007-11-11 15:45:23.169490961 +0100
+++ mac80211/include/net/mac80211.h	2007-11-11 15:45:30.429904707 +0100
@@ -706,11 +706,16 @@
  *
  * @queues: number of available hardware transmit queues for
  *	data packets. WMM/QoS requires at least four.
+ *
+ * @rate_control_algorithm: rate control algorithm for this hardware.
+ *	If unset (NULL), the default algorithm will be used. Must be
+ *	set before calling ieee80211_register_hw().
  */
 struct ieee80211_hw {
 	struct ieee80211_conf conf;
 	struct wiphy *wiphy;
 	struct workqueue_struct *workqueue;
+	const char *rate_control_algorithm;
 	void *priv;
 	u32 flags;
 	unsigned int extra_tx_headroom;
@@ -936,27 +941,11 @@
  *	and remove_interface calls, i.e. while the interface with the
  *	given local_address is enabled.
  *
- * @set_ieee8021x: Enable/disable IEEE 802.1X. This item requests wlan card
- *	to pass unencrypted EAPOL-Key frames even when encryption is
- *	configured. If the wlan card does not require such a configuration,
- *	this function pointer can be set to NULL.
- *
- * @set_port_auth: Set port authorization state (IEEE 802.1X PAE) to be
- *	authorized (@authorized=1) or unauthorized (=0). This function can be
- *	used if the wlan hardware or low-level driver implements PAE.
- *	mac80211 will filter frames based on authorization state in any case,
- *	so this function pointer can be NULL if low-level driver does not
- *	require event notification about port state changes.
- *
  * @hw_scan: Ask the hardware to service the scan request, no need to start
  *	the scan state machine in stack.
  *
  * @get_stats: return low-level statistics
  *
- * @set_privacy_invoked: For devices that generate their own beacons and probe
- *	response or association responses this updates the state of privacy_invoked
- *	returns 0 for success or an error number.
- *
  * @get_sequence_counter: For devices that have internal sequence counters this
  *	callback allows mac80211 to access the current value of a counter.
  *	This callback seems not well-defined, tell us if you need it.
@@ -1029,14 +1018,9 @@
 	int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 		       const u8 *local_address, const u8 *address,
 		       struct ieee80211_key_conf *key);
-	int (*set_ieee8021x)(struct ieee80211_hw *hw, int use_ieee8021x);
-	int (*set_port_auth)(struct ieee80211_hw *hw, u8 *addr,
-			     int authorized);
 	int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len);
 	int (*get_stats)(struct ieee80211_hw *hw,
 			 struct ieee80211_low_level_stats *stats);
-	int (*set_privacy_invoked)(struct ieee80211_hw *hw,
-				   int privacy_invoked);
 	int (*get_sequence_counter)(struct ieee80211_hw *hw,
 				    u8* addr, u8 keyidx, u8 txrx,
 				    u32* iv32, u16* iv16);
Index: mac80211/net/mac80211/aes_ccm.c
===================================================================
--- mac80211.orig/net/mac80211/aes_ccm.c	2007-11-11 15:45:23.177491419 +0100
+++ mac80211/net/mac80211/aes_ccm.c	2007-11-11 15:45:30.433904936 +0100
@@ -7,10 +7,10 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/crypto.h>
 #include <linux/err.h>
-#include <asm/scatterlist.h>
 
 #include <net/mac80211.h>
 #include "ieee80211_key.h"
@@ -63,7 +63,7 @@
 	s_0 = scratch + AES_BLOCK_LEN;
 	e = scratch + 2 * AES_BLOCK_LEN;
 
-	num_blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
+	num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
 	last_len = data_len % AES_BLOCK_LEN;
 	aes_ccm_prepare(tfm, b_0, aad, b, s_0, b);
 
@@ -102,7 +102,7 @@
 	s_0 = scratch + AES_BLOCK_LEN;
 	a = scratch + 2 * AES_BLOCK_LEN;
 
-	num_blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
+	num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
 	last_len = data_len % AES_BLOCK_LEN;
 	aes_ccm_prepare(tfm, b_0, aad, b, s_0, a);
 
Index: mac80211/net/mac80211/ieee80211.c
===================================================================
--- mac80211.orig/net/mac80211/ieee80211.c	2007-11-11 15:45:23.185491871 +0100
+++ mac80211/net/mac80211/ieee80211.c	2007-11-11 15:45:30.437905164 +0100
@@ -1061,7 +1061,8 @@
 	ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
 	ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP);
 
-	result = ieee80211_init_rate_ctrl_alg(local, NULL);
+	result = ieee80211_init_rate_ctrl_alg(local,
+					      hw->rate_control_algorithm);
 	if (result < 0) {
 		printk(KERN_DEBUG "%s: Failed to initialize rate control "
 		       "algorithm\n", wiphy_name(local->hw.wiphy));
@@ -1222,8 +1223,17 @@
 
 	BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb));
 
+#ifdef CONFIG_MAC80211_RCSIMPLE
+	ret = ieee80211_rate_control_register(&mac80211_rcsimple);
+	if (ret)
+		return ret;
+#endif
+
 	ret = ieee80211_wme_register();
 	if (ret) {
+#ifdef CONFIG_MAC80211_RCSIMPLE
+		ieee80211_rate_control_unregister(&mac80211_rcsimple);
+#endif
 		printk(KERN_DEBUG "ieee80211_init: failed to "
 		       "initialize WME (err=%d)\n", ret);
 		return ret;
@@ -1237,6 +1247,10 @@
 
 static void __exit ieee80211_exit(void)
 {
+#ifdef CONFIG_MAC80211_RCSIMPLE
+	ieee80211_rate_control_unregister(&mac80211_rcsimple);
+#endif
+
 	ieee80211_wme_unregister();
 	ieee80211_debugfs_netdev_exit();
 }
Index: mac80211/net/mac80211/ieee80211_i.h
===================================================================
--- mac80211.orig/net/mac80211/ieee80211_i.h	2007-11-11 15:45:23.189492100 +0100
+++ mac80211/net/mac80211/ieee80211_i.h	2007-11-11 15:45:30.441905395 +0100
@@ -232,6 +232,7 @@
 #define IEEE80211_STA_AUTO_SSID_SEL	BIT(10)
 #define IEEE80211_STA_AUTO_BSSID_SEL	BIT(11)
 #define IEEE80211_STA_AUTO_CHANNEL_SEL	BIT(12)
+#define IEEE80211_STA_PRIVACY_INVOKED	BIT(13)
 struct ieee80211_if_sta {
 	enum {
 		IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
@@ -261,7 +262,6 @@
 	unsigned long request;
 	struct sk_buff_head skb_queue;
 
-	int key_management_enabled;
 	unsigned long last_probe;
 
 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
Index: mac80211/net/mac80211/ieee80211_ioctl.c
===================================================================
--- mac80211.orig/net/mac80211/ieee80211_ioctl.c	2007-11-11 15:45:23.197492559 +0100
+++ mac80211/net/mac80211/ieee80211_ioctl.c	2007-11-11 15:45:30.441905395 +0100
@@ -305,9 +305,12 @@
 			    ((chan->chan == channel) || (chan->freq == freq))) {
 				local->oper_channel = chan;
 				local->oper_hw_mode = mode;
-				set++;
+				set = 1;
+				break;
 			}
 		}
+		if (set)
+			break;
 	}
 
 	if (set) {
@@ -507,10 +510,11 @@
 
 static int ieee80211_ioctl_siwscan(struct net_device *dev,
 				   struct iw_request_info *info,
-				   struct iw_point *data, char *extra)
+				   union iwreq_data *wrqu, char *extra)
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct iw_scan_req *req = NULL;
 	u8 *ssid = NULL;
 	size_t ssid_len = 0;
 
@@ -535,6 +539,14 @@
 		return -EOPNOTSUPP;
 	}
 
+	/* if SSID was specified explicitly then use that */
+	if (wrqu->data.length == sizeof(struct iw_scan_req) &&
+	    wrqu->data.flags & IW_SCAN_THIS_ESSID) {
+		req = (struct iw_scan_req *)extra;
+		ssid = req->essid;
+		ssid_len = req->essid_len;
+	}
+
 	return ieee80211_sta_req_scan(dev, ssid, ssid_len);
 }
 
@@ -621,22 +633,35 @@
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	bool need_reconfig = 0;
+	u8 new_power_level;
 
 	if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 		return -EINVAL;
 	if (data->txpower.flags & IW_TXPOW_RANGE)
 		return -EINVAL;
-	if (!data->txpower.fixed)
-		return -EINVAL;
 
-	if (local->hw.conf.power_level != data->txpower.value) {
-		local->hw.conf.power_level = data->txpower.value;
+	if (data->txpower.fixed) {
+		new_power_level = data->txpower.value;
+	} else {
+		/* Automatic power level. Get the px power from the current
+		 * channel. */
+		struct ieee80211_channel* chan = local->oper_channel;
+		if (!chan)
+			return -EINVAL;
+
+		new_power_level = chan->power_level;
+	}
+
+	if (local->hw.conf.power_level != new_power_level) {
+		local->hw.conf.power_level = new_power_level;
 		need_reconfig = 1;
 	}
+
 	if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 		local->hw.conf.radio_enabled = !(data->txpower.disabled);
 		need_reconfig = 1;
 	}
+
 	if (need_reconfig) {
 		ieee80211_hw_config(local);
 		/* The return value of hw_config is not of big interest here,
@@ -904,7 +929,6 @@
 				   struct iw_request_info *info,
 				   struct iw_param *data, char *extra)
 {
-	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	int ret = 0;
 
@@ -914,18 +938,21 @@
 	case IW_AUTH_CIPHER_GROUP:
 	case IW_AUTH_WPA_ENABLED:
 	case IW_AUTH_RX_UNENCRYPTED_EAPOL:
-		break;
 	case IW_AUTH_KEY_MGMT:
+		break;
+	case IW_AUTH_PRIVACY_INVOKED:
 		if (sdata->type != IEEE80211_IF_TYPE_STA)
 			ret = -EINVAL;
 		else {
+			sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
 			/*
-			 * Key management was set by wpa_supplicant,
-			 * we only need this to associate to a network
-			 * that has privacy enabled regardless of not
-			 * having a key.
+			 * Privacy invoked by wpa_supplicant, store the
+			 * value and allow associating to a protected
+			 * network without having a key up front.
 			 */
-			sdata->u.sta.key_management_enabled = !!data->value;
+			if (data->value)
+				sdata->u.sta.flags |=
+					IEEE80211_STA_PRIVACY_INVOKED;
 		}
 		break;
 	case IW_AUTH_80211_AUTH_ALG:
@@ -935,11 +962,6 @@
 		else
 			ret = -EOPNOTSUPP;
 		break;
-	case IW_AUTH_PRIVACY_INVOKED:
-		if (local->ops->set_privacy_invoked)
-			ret = local->ops->set_privacy_invoked(
-					local_to_hw(local), data->value);
-		break;
 	default:
 		ret = -EOPNOTSUPP;
 		break;
Index: mac80211/net/mac80211/ieee80211_rate.c
===================================================================
--- mac80211.orig/net/mac80211/ieee80211_rate.c	2007-11-11 15:45:23.205493011 +0100
+++ mac80211/net/mac80211/ieee80211_rate.c	2007-11-11 15:45:30.441905395 +0100
@@ -25,13 +25,25 @@
 {
 	struct rate_control_alg *alg;
 
+	if (!ops->name)
+		return -EINVAL;
+
+	mutex_lock(&rate_ctrl_mutex);
+	list_for_each_entry(alg, &rate_ctrl_algs, list) {
+		if (!strcmp(alg->ops->name, ops->name)) {
+			/* don't register an algorithm twice */
+			WARN_ON(1);
+			return -EALREADY;
+		}
+	}
+
 	alg = kzalloc(sizeof(*alg), GFP_KERNEL);
 	if (alg == NULL) {
+		mutex_unlock(&rate_ctrl_mutex);
 		return -ENOMEM;
 	}
 	alg->ops = ops;
 
-	mutex_lock(&rate_ctrl_mutex);
 	list_add_tail(&alg->list, &rate_ctrl_algs);
 	mutex_unlock(&rate_ctrl_mutex);
 
@@ -61,9 +73,12 @@
 	struct rate_control_alg *alg;
 	struct rate_control_ops *ops = NULL;
 
+	if (!name)
+		return NULL;
+
 	mutex_lock(&rate_ctrl_mutex);
 	list_for_each_entry(alg, &rate_ctrl_algs, list) {
-		if (!name || !strcmp(alg->ops->name, name))
+		if (!strcmp(alg->ops->name, name))
 			if (try_module_get(alg->ops->module)) {
 				ops = alg->ops;
 				break;
@@ -80,9 +95,12 @@
 {
 	struct rate_control_ops *ops;
 
+	if (!name)
+		name = "simple";
+
 	ops = ieee80211_try_rate_control_ops_get(name);
 	if (!ops) {
-		request_module("rc80211_%s", name ? name : "default");
+		request_module("rc80211_%s", name);
 		ops = ieee80211_try_rate_control_ops_get(name);
 	}
 	return ops;
Index: mac80211/net/mac80211/ieee80211_rate.h
===================================================================
--- mac80211.orig/net/mac80211/ieee80211_rate.h	2007-11-11 15:45:23.213493469 +0100
+++ mac80211/net/mac80211/ieee80211_rate.h	2007-11-11 15:45:30.445905621 +0100
@@ -65,6 +65,9 @@
 	struct kref kref;
 };
 
+/* default 'simple' algorithm */
+extern struct rate_control_ops mac80211_rcsimple;
+
 int ieee80211_rate_control_register(struct rate_control_ops *ops);
 void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
 
Index: mac80211/net/mac80211/ieee80211_sta.c
===================================================================
--- mac80211.orig/net/mac80211/ieee80211_sta.c	2007-11-11 15:45:23.217493699 +0100
+++ mac80211/net/mac80211/ieee80211_sta.c	2007-11-11 15:46:32.885463850 +0100
@@ -12,7 +12,6 @@
  */
 
 /* TODO:
- * BSS table: use <BSSID,SSID> as the key to support multi-SSID APs
  * order BSS list by RSSI(?) ("quality of AP")
  * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
  *    SSID)
@@ -61,7 +60,8 @@
 static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
 				     u8 *ssid, size_t ssid_len);
 static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid);
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
+		     u8 *ssid, u8 ssid_len);
 static void ieee80211_rx_bss_put(struct net_device *dev,
 				 struct ieee80211_sta_bss *bss);
 static int ieee80211_sta_find_ibss(struct net_device *dev,
@@ -108,14 +108,11 @@
 	u8 wmm_param_len;
 };
 
-enum ParseRes { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 };
-
-static enum ParseRes ieee802_11_parse_elems(u8 *start, size_t len,
-					    struct ieee802_11_elems *elems)
+static void ieee802_11_parse_elems(u8 *start, size_t len,
+				   struct ieee802_11_elems *elems)
 {
 	size_t left = len;
 	u8 *pos = start;
-	int unknown = 0;
 
 	memset(elems, 0, sizeof(*elems));
 
@@ -126,15 +123,8 @@
 		elen = *pos++;
 		left -= 2;
 
-		if (elen > left) {
-#if 0
-			if (net_ratelimit())
-				printk(KERN_DEBUG "IEEE 802.11 element parse "
-				       "failed (id=%d elen=%d left=%d)\n",
-				       id, elen, left);
-#endif
-			return ParseFailed;
-		}
+		if (elen > left)
+			return;
 
 		switch (id) {
 		case WLAN_EID_SSID:
@@ -201,28 +191,15 @@
 			elems->ext_supp_rates_len = elen;
 			break;
 		default:
-#if 0
-			printk(KERN_DEBUG "IEEE 802.11 element parse ignored "
-				      "unknown element (id=%d elen=%d)\n",
-				      id, elen);
-#endif
-			unknown++;
 			break;
 		}
 
 		left -= elen;
 		pos += elen;
 	}
-
-	/* Do not trigger error if left == 1 as Apple Airport base stations
-	 * send AssocResps that are one spurious byte too long. */
-
-	return unknown ? ParseUnknown : ParseOK;
 }
 
 
-
-
 static int ecw2cw(int ecw)
 {
 	int cw = 1;
@@ -426,7 +403,9 @@
 		if (sdata->type != IEEE80211_IF_TYPE_STA)
 			return;
 
-		bss = ieee80211_rx_bss_get(dev, ifsta->bssid);
+		bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+					   local->hw.conf.channel,
+					   ifsta->ssid, ifsta->ssid_len);
 		if (bss) {
 			if (bss->has_erp_value)
 				ieee80211_handle_erp_ie(dev, bss->erp_value);
@@ -571,7 +550,8 @@
 		capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
 			WLAN_CAPABILITY_SHORT_PREAMBLE;
 	}
-	bss = ieee80211_rx_bss_get(dev, ifsta->bssid);
+	bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel,
+				   ifsta->ssid, ifsta->ssid_len);
 	if (bss) {
 		if (bss->capability & WLAN_CAPABILITY_PRIVACY)
 			capab |= WLAN_CAPABILITY_PRIVACY;
@@ -719,24 +699,30 @@
 static int ieee80211_privacy_mismatch(struct net_device *dev,
 				      struct ieee80211_if_sta *ifsta)
 {
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	struct ieee80211_sta_bss *bss;
-	int res = 0;
+	int bss_privacy;
+	int wep_privacy;
+	int privacy_invoked;
 
-	if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL) ||
-	    ifsta->key_management_enabled)
+	if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
 		return 0;
 
-	bss = ieee80211_rx_bss_get(dev, ifsta->bssid);
+	bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel,
+				   ifsta->ssid, ifsta->ssid_len);
 	if (!bss)
 		return 0;
 
-	if (ieee80211_sta_wep_configured(dev) !=
-	    !!(bss->capability & WLAN_CAPABILITY_PRIVACY))
-		res = 1;
+	bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY);
+	wep_privacy = !!ieee80211_sta_wep_configured(dev);
+	privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED);
 
 	ieee80211_rx_bss_put(dev, bss);
 
-	return res;
+	if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked))
+		return 0;
+
+	return 1;
 }
 
 
@@ -920,12 +906,7 @@
 
 	printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name);
 	pos = mgmt->u.auth.variable;
-	if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems)
-	    == ParseFailed) {
-		printk(KERN_DEBUG "%s: failed to parse Auth(challenge)\n",
-		       dev->name);
-		return;
-	}
+	ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
 	if (!elems.challenge) {
 		printk(KERN_DEBUG "%s: no challenge IE in shared key auth "
 		       "frame\n", dev->name);
@@ -1214,12 +1195,7 @@
 	}
 
 	pos = mgmt->u.assoc_resp.variable;
-	if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems)
-	    == ParseFailed) {
-		printk(KERN_DEBUG "%s: failed to parse AssocResp\n",
-		       dev->name);
-		return;
-	}
+	ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
 
 	if (!elems.supp_rates) {
 		printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n",
@@ -1231,7 +1207,9 @@
 	 * update our stored copy */
 	if (elems.erp_info && elems.erp_info_len >= 1) {
 		struct ieee80211_sta_bss *bss
-			= ieee80211_rx_bss_get(dev, ifsta->bssid);
+			= ieee80211_rx_bss_get(dev, ifsta->bssid,
+					       local->hw.conf.channel,
+					       ifsta->ssid, ifsta->ssid_len);
 		if (bss) {
 			bss->erp_value = elems.erp_info[0];
 			bss->has_erp_value = 1;
@@ -1261,7 +1239,9 @@
 			       " AP\n", dev->name);
 			return;
 		}
-		bss = ieee80211_rx_bss_get(dev, ifsta->bssid);
+		bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+					   local->hw.conf.channel,
+					   ifsta->ssid, ifsta->ssid_len);
 		if (bss) {
 			sta->last_rssi = bss->rssi;
 			sta->last_signal = bss->signal;
@@ -1337,7 +1317,8 @@
 
 
 static struct ieee80211_sta_bss *
-ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid)
+ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel,
+		     u8 *ssid, u8 ssid_len)
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	struct ieee80211_sta_bss *bss;
@@ -1348,6 +1329,11 @@
 	atomic_inc(&bss->users);
 	atomic_inc(&bss->users);
 	memcpy(bss->bssid, bssid, ETH_ALEN);
+	bss->channel = channel;
+	if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
+		memcpy(bss->ssid, ssid, ssid_len);
+		bss->ssid_len = ssid_len;
+	}
 
 	spin_lock_bh(&local->sta_bss_lock);
 	/* TODO: order by RSSI? */
@@ -1359,7 +1345,8 @@
 
 
 static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid)
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
+		     u8 *ssid, u8 ssid_len)
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	struct ieee80211_sta_bss *bss;
@@ -1367,7 +1354,10 @@
 	spin_lock_bh(&local->sta_bss_lock);
 	bss = local->sta_bss_hash[STA_HASH(bssid)];
 	while (bss) {
-		if (memcmp(bss->bssid, bssid, ETH_ALEN) == 0) {
+		if (!memcmp(bss->bssid, bssid, ETH_ALEN) &&
+		    bss->channel == channel &&
+		    bss->ssid_len == ssid_len &&
+		    (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) {
 			atomic_inc(&bss->users);
 			break;
 		}
@@ -1429,7 +1419,7 @@
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	struct ieee802_11_elems elems;
 	size_t baselen;
-	int channel, invalid = 0, clen;
+	int channel, clen;
 	struct ieee80211_sta_bss *bss;
 	struct sta_info *sta;
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
@@ -1473,9 +1463,7 @@
 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
 	}
 
-	if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
-				   &elems) == ParseFailed)
-		invalid = 1;
+	ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
 
 	if (sdata->type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates &&
 	    memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 &&
@@ -1533,9 +1521,11 @@
 	else
 		channel = rx_status->channel;
 
-	bss = ieee80211_rx_bss_get(dev, mgmt->bssid);
+	bss = ieee80211_rx_bss_get(dev, mgmt->bssid, channel,
+				   elems.ssid, elems.ssid_len);
 	if (!bss) {
-		bss = ieee80211_rx_bss_add(dev, mgmt->bssid);
+		bss = ieee80211_rx_bss_add(dev, mgmt->bssid, channel,
+					   elems.ssid, elems.ssid_len);
 		if (!bss)
 			return;
 	} else {
@@ -1561,10 +1551,6 @@
 
 	bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
 	bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
-	if (elems.ssid && elems.ssid_len <= IEEE80211_MAX_SSID_LEN) {
-		memcpy(bss->ssid, elems.ssid, elems.ssid_len);
-		bss->ssid_len = elems.ssid_len;
-	}
 
 	bss->supp_rates_len = 0;
 	if (elems.supp_rates) {
@@ -1635,7 +1621,6 @@
 
 
 	bss->hw_mode = rx_status->phymode;
-	bss->channel = channel;
 	bss->freq = rx_status->freq;
 	if (channel != rx_status->channel &&
 	    (bss->hw_mode == MODE_IEEE80211G ||
@@ -1695,9 +1680,7 @@
 	if (baselen > len)
 		return;
 
-	if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
-				   &elems) == ParseFailed)
-		return;
+	ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
 
 	if (elems.erp_info && elems.erp_info_len >= 1)
 		ieee80211_handle_erp_ie(dev, elems.erp_info[0]);
@@ -2098,7 +2081,8 @@
 {
 	int tmp, hidden_ssid;
 
-	if (!memcmp(ifsta->ssid, ssid, ssid_len))
+	if (ssid_len == ifsta->ssid_len &&
+	    !memcmp(ifsta->ssid, ssid, ssid_len))
 		return 1;
 
 	if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL)
@@ -2357,7 +2341,7 @@
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	struct ieee80211_sta_bss *bss;
-	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	struct ieee80211_hw_mode *mode;
 	u8 bssid[ETH_ALEN], *pos;
 	int i;
@@ -2379,18 +2363,17 @@
 	printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID " MAC_FMT "\n",
 	       dev->name, MAC_ARG(bssid));
 
-	bss = ieee80211_rx_bss_add(dev, bssid);
+	bss = ieee80211_rx_bss_add(dev, bssid, local->hw.conf.channel,
+				   sdata->u.sta.ssid, sdata->u.sta.ssid_len);
 	if (!bss)
 		return -ENOMEM;
 
-	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	mode = local->oper_hw_mode;
 
 	if (local->hw.conf.beacon_int == 0)
 		local->hw.conf.beacon_int = 100;
 	bss->beacon_int = local->hw.conf.beacon_int;
 	bss->hw_mode = local->hw.conf.phymode;
-	bss->channel = local->hw.conf.channel;
 	bss->freq = local->hw.conf.freq;
 	bss->last_update = jiffies;
 	bss->capability = WLAN_CAPABILITY_IBSS;
@@ -2448,7 +2431,8 @@
 	       MAC_FMT "\n", MAC_ARG(bssid), MAC_ARG(ifsta->bssid));
 #endif /* CONFIG_MAC80211_IBSS_DEBUG */
 	if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 &&
-	    (bss = ieee80211_rx_bss_get(dev, bssid))) {
+	    (bss = ieee80211_rx_bss_get(dev, bssid, local->hw.conf.channel,
+					ifsta->ssid, ifsta->ssid_len))) {
 		printk(KERN_DEBUG "%s: Selected IBSS BSSID " MAC_FMT
 		       " based on configured SSID\n",
 		       dev->name, MAC_ARG(bssid));
Index: mac80211/net/mac80211/Kconfig
===================================================================
--- mac80211.orig/net/mac80211/Kconfig	2007-11-11 15:45:23.225494151 +0100
+++ mac80211/net/mac80211/Kconfig	2007-11-11 15:45:30.449905846 +0100
@@ -13,6 +13,18 @@
 	This option enables the hardware independent IEEE 802.11
 	networking stack.
 
+config MAC80211_RCSIMPLE
+	bool "'simple' rate control algorithm" if EMBEDDED
+	default y
+	depends on MAC80211
+	help
+	  This option allows you to turn off the 'simple' rate
+	  control algorithm in mac80211. If you do turn it off,
+	  you absolutely need another rate control algorithm.
+
+	  Say Y unless you know you will have another algorithm
+	  available.
+
 config MAC80211_LEDS
 	bool "Enable LED triggers"
 	depends on MAC80211 && LEDS_TRIGGERS
Index: mac80211/net/mac80211/Makefile
===================================================================
--- mac80211.orig/net/mac80211/Makefile	2007-11-11 15:45:23.233494609 +0100
+++ mac80211/net/mac80211/Makefile	2007-11-11 15:45:30.449905846 +0100
@@ -1,8 +1,9 @@
-obj-$(CONFIG_MAC80211) += mac80211.o rc80211_simple.o
+obj-$(CONFIG_MAC80211) += mac80211.o
 
 mac80211-objs-$(CONFIG_MAC80211_LEDS) += ieee80211_led.o
 mac80211-objs-$(CONFIG_MAC80211_DEBUGFS) += debugfs.o debugfs_sta.o debugfs_netdev.o debugfs_key.o
 mac80211-objs-$(CONFIG_NET_SCHED) += wme.o
+mac80211-objs-$(CONFIG_MAC80211_RCSIMPLE) += rc80211_simple.o
 
 mac80211-objs := \
 	ieee80211.o \
Index: mac80211/net/mac80211/rc80211_simple.c
===================================================================
--- mac80211.orig/net/mac80211/rc80211_simple.c	2007-11-11 15:45:23.237494839 +0100
+++ mac80211/net/mac80211/rc80211_simple.c	2007-11-11 15:45:30.449905846 +0100
@@ -7,7 +7,6 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/module.h>
 #include <linux/init.h>
 #include <linux/netdevice.h>
 #include <linux/types.h>
@@ -29,8 +28,6 @@
 #define RATE_CONTROL_INTERVAL (HZ / 20)
 #define RATE_CONTROL_MIN_TX 10
 
-MODULE_ALIAS("rc80211_default");
-
 static void rate_control_rate_inc(struct ieee80211_local *local,
 				  struct sta_info *sta)
 {
@@ -393,8 +390,7 @@
 }
 #endif
 
-static struct rate_control_ops rate_control_simple = {
-	.module = THIS_MODULE,
+struct rate_control_ops mac80211_rcsimple = {
 	.name = "simple",
 	.tx_status = rate_control_simple_tx_status,
 	.get_rate = rate_control_simple_get_rate,
@@ -409,22 +405,3 @@
 	.remove_sta_debugfs = rate_control_simple_remove_sta_debugfs,
 #endif
 };
-
-
-static int __init rate_control_simple_init(void)
-{
-	return ieee80211_rate_control_register(&rate_control_simple);
-}
-
-
-static void __exit rate_control_simple_exit(void)
-{
-	ieee80211_rate_control_unregister(&rate_control_simple);
-}
-
-
-subsys_initcall(rate_control_simple_init);
-module_exit(rate_control_simple_exit);
-
-MODULE_DESCRIPTION("Simple rate control algorithm for ieee80211");
-MODULE_LICENSE("GPL");
Index: mac80211/net/mac80211/rx.c
===================================================================
--- mac80211.orig/net/mac80211/rx.c	2007-11-11 15:45:23.245495291 +0100
+++ mac80211/net/mac80211/rx.c	2007-11-11 15:45:30.449905846 +0100
@@ -509,9 +509,11 @@
 		rx->key->tx_rx_count++;
 		/* TODO: add threshold stuff again */
 	} else {
+#ifdef CONFIG_MAC80211_DEBUG
 		if (net_ratelimit())
 			printk(KERN_DEBUG "%s: RX protected frame,"
 			       " but have no key\n", rx->dev->name);
+#endif /* CONFIG_MAC80211_DEBUG */
 		return TXRX_DROP;
 	}
 
Index: mac80211/net/mac80211/wep.c
===================================================================
--- mac80211.orig/net/mac80211/wep.c	2007-11-11 15:45:23.253495749 +0100
+++ mac80211/net/mac80211/wep.c	2007-11-11 15:45:30.449905846 +0100
@@ -16,7 +16,7 @@
 #include <linux/crypto.h>
 #include <linux/err.h>
 #include <linux/mm.h>
-#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
 
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
@@ -138,9 +138,7 @@
 	*icv = cpu_to_le32(~crc32_le(~0, data, data_len));
 
 	crypto_blkcipher_setkey(tfm, rc4key, klen);
-	sg.page = virt_to_page(data);
-	sg.offset = offset_in_page(data);
-	sg.length = data_len + WEP_ICV_LEN;
+	sg_init_one(&sg, data, data_len + WEP_ICV_LEN);
 	crypto_blkcipher_encrypt(&desc, &sg, &sg, sg.length);
 }
 
@@ -204,9 +202,7 @@
 	__le32 crc;
 
 	crypto_blkcipher_setkey(tfm, rc4key, klen);
-	sg.page = virt_to_page(data);
-	sg.offset = offset_in_page(data);
-	sg.length = data_len + WEP_ICV_LEN;
+	sg_init_one(&sg, data, data_len + WEP_ICV_LEN);
 	crypto_blkcipher_decrypt(&desc, &sg, &sg, sg.length);
 
 	crc = cpu_to_le32(~crc32_le(~0, data, data_len));
@@ -318,9 +314,11 @@
 
 	if (!(rx->u.rx.status->flag & RX_FLAG_DECRYPTED)) {
 		if (ieee80211_wep_decrypt(rx->local, rx->skb, rx->key)) {
+#ifdef CONFIG_MAC80211_DEBUG
 			if (net_ratelimit())
 				printk(KERN_DEBUG "%s: RX WEP frame, decrypt "
 				       "failed\n", rx->dev->name);
+#endif /* CONFIG_MAC80211_DEBUG */
 			return TXRX_DROP;
 		}
 	} else if (!(rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED)) {
Index: mac80211/net/wireless/Kconfig
===================================================================
--- mac80211.orig/net/wireless/Kconfig	2007-11-11 15:45:23.261496205 +0100
+++ mac80211/net/wireless/Kconfig	2007-11-11 15:45:30.453906075 +0100
@@ -3,7 +3,7 @@
 
 config NL80211
 	bool "nl80211 new netlink interface support"
-	depends CFG80211
+	depends on CFG80211
 	default y
 	---help---
          This option turns on the new netlink interface