Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem

Conflicts:
	drivers/net/wireless/libertas_tf/cmd.c
	drivers/net/wireless/libertas_tf/main.c

14 files changed, 216 insertions, 63 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 845a6e6..ae37270 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -97,9 +97,6 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
 					    params->mesh_id_len,
 					    params->mesh_id);
 
-	if (sdata->vif.type != NL80211_IFTYPE_MONITOR || !flags)
-		return 0;
-
 	if (type == NL80211_IFTYPE_AP_VLAN &&
 	    params && params->use_4addr == 0)
 		rcu_assign_pointer(sdata->u.vlan.sta, NULL);
@@ -107,7 +104,9 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
 		 params && params->use_4addr >= 0)
 		sdata->u.mgd.use_4addr = params->use_4addr;
 
-	sdata->u.mntr_flags = *flags;
+	if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags)
+		sdata->u.mntr_flags = *flags;
+
 	return 0;
 }
 
@@ -1115,6 +1114,13 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
 		changed |= BSS_CHANGED_BASIC_RATES;
 	}
 
+	if (params->ap_isolate >= 0) {
+		if (params->ap_isolate)
+			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
+		else
+			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
+	}
+
 	ieee80211_bss_info_change_notify(sdata, changed);
 
 	return 0;
@@ -1399,11 +1405,11 @@ static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 		return -EOPNOTSUPP;
 
 	if (enabled == sdata->u.mgd.powersave &&
-	    timeout == conf->dynamic_ps_timeout)
+	    timeout == conf->dynamic_ps_forced_timeout)
 		return 0;
 
 	sdata->u.mgd.powersave = enabled;
-	conf->dynamic_ps_timeout = timeout;
+	conf->dynamic_ps_forced_timeout = timeout;
 
 	/* no change, but if automatic follow powersave */
 	mutex_lock(&sdata->u.mgd.mtx);
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 6bc9b07..e763f15 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -39,6 +39,13 @@ static const struct file_operations sta_ ##name## _ops = {		\
 	.open = mac80211_open_file_generic,				\
 }
 
+#define STA_OPS_RW(name)						\
+static const struct file_operations sta_ ##name## _ops = {		\
+	.read = sta_##name##_read,					\
+	.write = sta_##name##_write,					\
+	.open = mac80211_open_file_generic,				\
+}
+
 #define STA_FILE(name, field, format)					\
 		STA_READ_##format(name, field)				\
 		STA_OPS(name)
@@ -156,7 +163,63 @@ static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
 
 	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 }
-STA_OPS(agg_status);
+
+static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
+				    size_t count, loff_t *ppos)
+{
+	char _buf[12], *buf = _buf;
+	struct sta_info *sta = file->private_data;
+	bool start, tx;
+	unsigned long tid;
+	int ret;
+
+	if (count > sizeof(_buf))
+		return -EINVAL;
+
+	if (copy_from_user(buf, userbuf, count))
+		return -EFAULT;
+
+	buf[sizeof(_buf) - 1] = '\0';
+
+	if (strncmp(buf, "tx ", 3) == 0) {
+		buf += 3;
+		tx = true;
+	} else if (strncmp(buf, "rx ", 3) == 0) {
+		buf += 3;
+		tx = false;
+	} else
+		return -EINVAL;
+
+	if (strncmp(buf, "start ", 6) == 0) {
+		buf += 6;
+		start = true;
+		if (!tx)
+			return -EINVAL;
+	} else if (strncmp(buf, "stop ", 5) == 0) {
+		buf += 5;
+		start = false;
+	} else
+		return -EINVAL;
+
+	tid = simple_strtoul(buf, NULL, 0);
+
+	if (tid >= STA_TID_NUM)
+		return -EINVAL;
+
+	if (tx) {
+		if (start)
+			ret = ieee80211_start_tx_ba_session(&sta->sta, tid);
+		else
+			ret = ieee80211_stop_tx_ba_session(&sta->sta, tid,
+							   WLAN_BACK_RECIPIENT);
+	} else {
+		__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, 3);
+		ret = 0;
+	}
+
+	return ret ?: count;
+}
+STA_OPS_RW(agg_status);
 
 static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
 				size_t count, loff_t *ppos)
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index 35e1e58..ee8b63f 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -152,14 +152,15 @@ static inline void drv_update_tkip_key(struct ieee80211_local *local,
 }
 
 static inline int drv_hw_scan(struct ieee80211_local *local,
+			      struct ieee80211_sub_if_data *sdata,
 			      struct cfg80211_scan_request *req)
 {
 	int ret;
 
 	might_sleep();
 
-	ret = local->ops->hw_scan(&local->hw, req);
-	trace_drv_hw_scan(local, req, ret);
+	ret = local->ops->hw_scan(&local->hw, &sdata->vif, req);
+	trace_drv_hw_scan(local, sdata, req, ret);
 	return ret;
 }
 
diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index e209cb82..ce734b5 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -363,23 +363,26 @@ TRACE_EVENT(drv_update_tkip_key,
 
 TRACE_EVENT(drv_hw_scan,
 	TP_PROTO(struct ieee80211_local *local,
+		 struct ieee80211_sub_if_data *sdata,
 		 struct cfg80211_scan_request *req, int ret),
 
-	TP_ARGS(local, req, ret),
+	TP_ARGS(local, sdata, req, ret),
 
 	TP_STRUCT__entry(
 		LOCAL_ENTRY
+		VIF_ENTRY
 		__field(int, ret)
 	),
 
 	TP_fast_assign(
 		LOCAL_ASSIGN;
+		VIF_ASSIGN;
 		__entry->ret = ret;
 	),
 
 	TP_printk(
-		LOCAL_PR_FMT " ret:%d",
-		LOCAL_PR_ARG, __entry->ret
+		LOCAL_PR_FMT VIF_PR_FMT " ret:%d",
+		LOCAL_PR_ARG,VIF_PR_ARG, __entry->ret
 	)
 );
 
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index e6f3b0c..b72ee64 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -92,6 +92,12 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	if (memcmp(ifibss->bssid, bssid, ETH_ALEN))
 		sta_info_flush(sdata->local, sdata);
 
+	/* if merging, indicate to driver that we leave the old IBSS */
+	if (sdata->vif.bss_conf.ibss_joined) {
+		sdata->vif.bss_conf.ibss_joined = false;
+		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IBSS);
+	}
+
 	memcpy(ifibss->bssid, bssid, ETH_ALEN);
 
 	sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0;
@@ -171,6 +177,8 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 	bss_change |= BSS_CHANGED_BSSID;
 	bss_change |= BSS_CHANGED_BEACON;
 	bss_change |= BSS_CHANGED_BEACON_ENABLED;
+	bss_change |= BSS_CHANGED_IBSS;
+	sdata->vif.bss_conf.ibss_joined = true;
 	ieee80211_bss_info_change_notify(sdata, bss_change);
 
 	ieee80211_sta_def_wmm_params(sdata, sband->n_bitrates, supp_rates);
@@ -481,7 +489,9 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata)
 	printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
 	       "IBSS networks with same SSID (merge)\n", sdata->name);
 
-	ieee80211_request_internal_scan(sdata, ifibss->ssid, ifibss->ssid_len);
+	ieee80211_request_internal_scan(sdata,
+			ifibss->ssid, ifibss->ssid_len,
+			ifibss->fixed_channel ? ifibss->channel : NULL);
 }
 
 static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
@@ -588,8 +598,9 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
 		printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
 		       "join\n", sdata->name);
 
-		ieee80211_request_internal_scan(sdata, ifibss->ssid,
-						ifibss->ssid_len);
+		ieee80211_request_internal_scan(sdata,
+				ifibss->ssid, ifibss->ssid_len,
+				ifibss->fixed_channel ? ifibss->channel : NULL);
 	} else {
 		int interval = IEEE80211_SCAN_INTERVAL;
 
@@ -897,6 +908,12 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
 	sdata->u.ibss.channel = params->channel;
 	sdata->u.ibss.fixed_channel = params->channel_fixed;
 
+	/* fix ourselves to that channel now already */
+	if (params->channel_fixed) {
+		sdata->local->oper_channel = params->channel;
+		sdata->local->oper_channel_type = NL80211_CHAN_NO_HT;
+	}
+
 	if (params->ie) {
 		sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len,
 					   GFP_KERNEL);
@@ -951,7 +968,9 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
 	kfree(sdata->u.ibss.ie);
 	skb = sdata->u.ibss.presp;
 	rcu_assign_pointer(sdata->u.ibss.presp, NULL);
-	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
+	sdata->vif.bss_conf.ibss_joined = false;
+	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
+						BSS_CHANGED_IBSS);
 	synchronize_rcu();
 	kfree_skb(skb);
 
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index c9712f3..cbaf4981 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1019,7 +1019,8 @@ void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
 /* scan/BSS handling */
 void ieee80211_scan_work(struct work_struct *work);
 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
-				    const u8 *ssid, u8 ssid_len);
+				    const u8 *ssid, u8 ssid_len,
+				    struct ieee80211_channel *chan);
 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
 			   struct cfg80211_scan_request *req);
 void ieee80211_scan_cancel(struct ieee80211_local *local);
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 011ee85..bd632e1 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -442,7 +442,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	struct ieee80211_local *local = hw_to_local(hw);
 	int result;
 	enum ieee80211_band band;
-	int channels, i, j, max_bitrates;
+	int channels, max_bitrates;
 	bool supp_ht;
 	static const u32 cipher_suites[] = {
 		WLAN_CIPHER_SUITE_WEP40,
@@ -572,6 +572,8 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 
 	local->hw.conf.listen_interval = local->hw.max_listen_interval;
 
+	local->hw.conf.dynamic_ps_forced_timeout = -1;
+
 	result = sta_info_start(local);
 	if (result < 0)
 		goto fail_sta_info;
@@ -606,21 +608,6 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 
 	ieee80211_led_init(local);
 
-	/* alloc internal scan request */
-	i = 0;
-	local->int_scan_req->ssids = &local->scan_ssid;
-	local->int_scan_req->n_ssids = 1;
-	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
-		if (!hw->wiphy->bands[band])
-			continue;
-		for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) {
-			local->int_scan_req->channels[i] =
-				&hw->wiphy->bands[band]->channels[j];
-			i++;
-		}
-	}
-	local->int_scan_req->n_channels = i;
-
 	local->network_latency_notifier.notifier_call =
 		ieee80211_max_network_latency;
 	result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 425f66c..358226f 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -478,6 +478,7 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
 {
 	struct ieee80211_sub_if_data *sdata, *found = NULL;
 	int count = 0;
+	int timeout;
 
 	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
 		local->ps_sdata = NULL;
@@ -511,6 +512,26 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
 		beaconint_us = ieee80211_tu_to_usec(
 					found->vif.bss_conf.beacon_int);
 
+		timeout = local->hw.conf.dynamic_ps_forced_timeout;
+		if (timeout < 0) {
+			/*
+			 * The 2 second value is there for compatibility until
+			 * the PM_QOS_NETWORK_LATENCY is configured with real
+			 * values.
+			 */
+			if (latency == 2000000000)
+				timeout = 100;
+			else if (latency <= 50000)
+				timeout = 300;
+			else if (latency <= 100000)
+				timeout = 100;
+			else if (latency <= 500000)
+				timeout = 50;
+			else
+				timeout = 0;
+		}
+		local->hw.conf.dynamic_ps_timeout = timeout;
+
 		if (beaconint_us > latency) {
 			local->ps_sdata = NULL;
 		} else {
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 72efbd8..9a08f2c 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -81,8 +81,6 @@ ieee80211_rx_radiotap_len(struct ieee80211_local *local,
 		len += 8;
 	if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
 		len += 1;
-	if (local->hw.flags & IEEE80211_HW_NOISE_DBM)
-		len += 1;
 
 	if (len & 1) /* padding for RX_FLAGS if necessary */
 		len++;
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index e1a3def..e14c441 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -85,7 +85,7 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
 {
 	struct cfg80211_bss *cbss;
 	struct ieee80211_bss *bss;
-	int clen;
+	int clen, srlen;
 	s32 signal = 0;
 
 	if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
@@ -114,23 +114,24 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
 		bss->dtim_period = tim_ie->dtim_period;
 	}
 
-	bss->supp_rates_len = 0;
+	/* replace old supported rates if we get new values */
+	srlen = 0;
 	if (elems->supp_rates) {
-		clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
+		clen = IEEE80211_MAX_SUPP_RATES;
 		if (clen > elems->supp_rates_len)
 			clen = elems->supp_rates_len;
-		memcpy(&bss->supp_rates[bss->supp_rates_len], elems->supp_rates,
-		       clen);
-		bss->supp_rates_len += clen;
+		memcpy(bss->supp_rates, elems->supp_rates, clen);
+		srlen += clen;
 	}
 	if (elems->ext_supp_rates) {
-		clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
+		clen = IEEE80211_MAX_SUPP_RATES - srlen;
 		if (clen > elems->ext_supp_rates_len)
 			clen = elems->ext_supp_rates_len;
-		memcpy(&bss->supp_rates[bss->supp_rates_len],
-		       elems->ext_supp_rates, clen);
-		bss->supp_rates_len += clen;
+		memcpy(bss->supp_rates + srlen, elems->ext_supp_rates, clen);
+		srlen += clen;
 	}
+	if (srlen)
+		bss->supp_rates_len = srlen;
 
 	bss->wmm_used = elems->wmm_param || elems->wmm_info;
 	bss->uapsd_supported = is_uapsd_supported(elems);
@@ -411,7 +412,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
 
 	if (local->ops->hw_scan) {
 		WARN_ON(!ieee80211_prep_hw_scan(local));
-		rc = drv_hw_scan(local, local->hw_scan_req);
+		rc = drv_hw_scan(local, sdata, local->hw_scan_req);
 	} else
 		rc = ieee80211_start_sw_scan(local);
 
@@ -655,7 +656,7 @@ void ieee80211_scan_work(struct work_struct *work)
 	}
 
 	if (local->hw_scan_req) {
-		int rc = drv_hw_scan(local, local->hw_scan_req);
+		int rc = drv_hw_scan(local, sdata, local->hw_scan_req);
 		mutex_unlock(&local->scan_mtx);
 		if (rc)
 			ieee80211_scan_completed(&local->hw, true);
@@ -728,10 +729,12 @@ int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
 }
 
 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
-				    const u8 *ssid, u8 ssid_len)
+				    const u8 *ssid, u8 ssid_len,
+				    struct ieee80211_channel *chan)
 {
 	struct ieee80211_local *local = sdata->local;
 	int ret = -EBUSY;
+	enum nl80211_band band;
 
 	mutex_lock(&local->scan_mtx);
 
@@ -739,6 +742,30 @@ int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
 	if (local->scan_req)
 		goto unlock;
 
+	/* fill internal scan request */
+	if (!chan) {
+		int i, nchan = 0;
+
+		for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+			if (!local->hw.wiphy->bands[band])
+				continue;
+			for (i = 0;
+			     i < local->hw.wiphy->bands[band]->n_channels;
+			     i++) {
+				local->int_scan_req->channels[nchan] =
+				    &local->hw.wiphy->bands[band]->channels[i];
+				nchan++;
+			}
+		}
+
+		local->int_scan_req->n_channels = nchan;
+	} else {
+		local->int_scan_req->channels[0] = chan;
+		local->int_scan_req->n_channels = 1;
+	}
+
+	local->int_scan_req->ssids = &local->scan_ssid;
+	local->int_scan_req->n_ssids = 1;
 	memcpy(local->int_scan_req->ssids[0].ssid, ssid, IEEE80211_MAX_SSID_LEN);
 	local->int_scan_req->ssids[0].ssid_len = ssid_len;
 
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 3de7a22..7301975 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -855,8 +855,12 @@ struct ieee80211_sta *ieee80211_find_sta_by_hw(struct ieee80211_hw *hw,
 	struct sta_info *sta, *nxt;
 
 	/* Just return a random station ... first in list ... */
-	for_each_sta_info(hw_to_local(hw), addr, sta, nxt)
+	for_each_sta_info(hw_to_local(hw), addr, sta, nxt) {
+		if (!sta->uploaded)
+			return NULL;
 		return &sta->sta;
+	}
+
 	return NULL;
 }
 EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_hw);
@@ -864,14 +868,19 @@ EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_hw);
 struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif,
 					 const u8 *addr)
 {
-	struct ieee80211_sub_if_data *sdata;
+	struct sta_info *sta;
 
 	if (!vif)
 		return NULL;
 
-	sdata = vif_to_sdata(vif);
+	sta = sta_info_get_bss(vif_to_sdata(vif), addr);
+	if (!sta)
+		return NULL;
+
+	if (!sta->uploaded)
+		return NULL;
 
-	return ieee80211_find_sta_by_hw(&sdata->local->hw, addr);
+	return &sta->sta;
 }
 EXPORT_SYMBOL(ieee80211_find_sta);
 
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 11805a3..94613af0 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -171,6 +171,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 	struct net_device *prev_dev = NULL;
 	struct sta_info *sta, *tmp;
 	int retry_count = -1, i;
+	int rates_idx = -1;
 	bool send_to_cooked;
 
 	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
@@ -178,6 +179,8 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 		if (i >= hw->max_rates) {
 			info->status.rates[i].idx = -1;
 			info->status.rates[i].count = 0;
+		} else if (info->status.rates[i].idx >= 0) {
+			rates_idx = i;
 		}
 
 		retry_count += info->status.rates[i].count;
@@ -206,6 +209,10 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 			return;
 		}
 
+		if ((local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) &&
+		    (rates_idx != -1))
+			sta->last_tx_rate = info->status.rates[rates_idx];
+
 		if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) &&
 		    (ieee80211_is_data_qos(fc))) {
 			u16 tid, ssn;
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index e2aa972..f3841f4 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -593,7 +593,8 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
 	struct ieee80211_hdr *hdr = (void *)tx->skb->data;
 	struct ieee80211_supported_band *sband;
 	struct ieee80211_rate *rate;
-	int i, len;
+	int i;
+	u32 len;
 	bool inval = false, rts = false, short_preamble = false;
 	struct ieee80211_tx_rate_control txrc;
 	u32 sta_flags;
@@ -602,7 +603,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
 
 	sband = tx->local->hw.wiphy->bands[tx->channel->band];
 
-	len = min_t(int, tx->skb->len + FCS_LEN,
+	len = min_t(u32, tx->skb->len + FCS_LEN,
 			 tx->local->hw.wiphy->frag_threshold);
 
 	/* set up the tx rate control struct we give the RC algo */
diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index bdb1d05..3dd0760 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -213,15 +213,25 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
 
 	sband = local->hw.wiphy->bands[wk->chan->band];
 
-	/*
-	 * Get all rates supported by the device and the AP as
-	 * some APs don't like getting a superset of their rates
-	 * in the association request (e.g. D-Link DAP 1353 in
-	 * b-only mode)...
-	 */
-	rates_len = ieee80211_compatible_rates(wk->assoc.supp_rates,
-					       wk->assoc.supp_rates_len,
-					       sband, &rates);
+	if (wk->assoc.supp_rates_len) {
+		/*
+		 * Get all rates supported by the device and the AP as
+		 * some APs don't like getting a superset of their rates
+		 * in the association request (e.g. D-Link DAP 1353 in
+		 * b-only mode)...
+		 */
+		rates_len = ieee80211_compatible_rates(wk->assoc.supp_rates,
+						       wk->assoc.supp_rates_len,
+						       sband, &rates);
+	} else {
+		/*
+		 * In case AP not provide any supported rates information
+		 * before association, we send information element(s) with
+		 * all rates that we support.
+		 */
+		rates = ~0;
+		rates_len = sband->n_bitrates;
+	}
 
 	skb = alloc_skb(local->hw.extra_tx_headroom +
 			sizeof(*mgmt) + /* bit too much but doesn't matter */