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

John W. Linville says:

====================
This is a batch of fixes intended for the 3.11 queue...

Regarding the mac80211 (and related) bits, Johannes says:

"I have a fix from Chris for an infinite loop along with fixes from
myself to prevent it entering the loop to start with (continue using
disabled channels, many thanks to Chris for his debug/test help) and a
workaround for broken APs that advertise a bad HT primary channel in
their beacons. Additionally, a fix for another attrbuf race in mac80211
and a fix to clean up properly while P2P GO interfaces go down."

Along with that...

Solomon Peachy corrects a range check in cw1200 that would lead to
a BUG_ON when starting AP mode.

Stanislaw Gruszka provides an iwl4965 patch to power-up the device
earlier (avoiding microcode errors), and another iwl4965 fix that
resets the firmware after turning rfkill off (resolving a bug in the
Red Hat Bugzilla).

Please let me know if there are problems!
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 52 insertions, 33 deletions

diff --git a/drivers/net/wireless/cw1200/sta.c b/drivers/net/wireless/cw1200/sta.c
index 7365674366f..010b252be58 100644
--- a/drivers/net/wireless/cw1200/sta.c
+++ b/drivers/net/wireless/cw1200/sta.c
@@ -1406,11 +1406,8 @@ static void cw1200_do_unjoin(struct cw1200_common *priv)
 	if (!priv->join_status)
 		goto done;
 
-	if (priv->join_status > CW1200_JOIN_STATUS_IBSS) {
-		wiphy_err(priv->hw->wiphy, "Unexpected: join status: %d\n",
-			  priv->join_status);
-		BUG_ON(1);
-	}
+	if (priv->join_status == CW1200_JOIN_STATUS_AP)
+		goto done;
 
 	cancel_work_sync(&priv->update_filtering_work);
 	cancel_work_sync(&priv->set_beacon_wakeup_period_work);
diff --git a/drivers/net/wireless/iwlegacy/4965-mac.c b/drivers/net/wireless/iwlegacy/4965-mac.c
index b9b2bb51e60..f2ed62e3734 100644
--- a/drivers/net/wireless/iwlegacy/4965-mac.c
+++ b/drivers/net/wireless/iwlegacy/4965-mac.c
@@ -4460,12 +4460,12 @@ il4965_irq_tasklet(struct il_priv *il)
 		 * is killed. Hence update the killswitch state here. The
 		 * rfkill handler will care about restarting if needed.
 		 */
-		if (!test_bit(S_ALIVE, &il->status)) {
-			if (hw_rf_kill)
-				set_bit(S_RFKILL, &il->status);
-			else
-				clear_bit(S_RFKILL, &il->status);
+		if (hw_rf_kill) {
+			set_bit(S_RFKILL, &il->status);
+		} else {
+			clear_bit(S_RFKILL, &il->status);
 			wiphy_rfkill_set_hw_state(il->hw->wiphy, hw_rf_kill);
+			il_force_reset(il, true);
 		}
 
 		handled |= CSR_INT_BIT_RF_KILL;
@@ -5334,6 +5334,9 @@ il4965_alive_start(struct il_priv *il)
 
 	il->active_rate = RATES_MASK;
 
+	il_power_update_mode(il, true);
+	D_INFO("Updated power mode\n");
+
 	if (il_is_associated(il)) {
 		struct il_rxon_cmd *active_rxon =
 		    (struct il_rxon_cmd *)&il->active;
@@ -5364,9 +5367,6 @@ il4965_alive_start(struct il_priv *il)
 	D_INFO("ALIVE processing complete.\n");
 	wake_up(&il->wait_command_queue);
 
-	il_power_update_mode(il, true);
-	D_INFO("Updated power mode\n");
-
 	return;
 
 restart:
diff --git a/drivers/net/wireless/iwlegacy/common.c b/drivers/net/wireless/iwlegacy/common.c
index 3195aad440d..b03e22ef546 100644
--- a/drivers/net/wireless/iwlegacy/common.c
+++ b/drivers/net/wireless/iwlegacy/common.c
@@ -4660,6 +4660,7 @@ il_force_reset(struct il_priv *il, bool external)
 
 	return 0;
 }
+EXPORT_SYMBOL(il_force_reset);
 
 int
 il_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index ae31968d42d..cc9e02d79b5 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -31,10 +31,12 @@
 #include "led.h"
 
 #define IEEE80211_AUTH_TIMEOUT		(HZ / 5)
+#define IEEE80211_AUTH_TIMEOUT_LONG	(HZ / 2)
 #define IEEE80211_AUTH_TIMEOUT_SHORT	(HZ / 10)
 #define IEEE80211_AUTH_MAX_TRIES	3
 #define IEEE80211_AUTH_WAIT_ASSOC	(HZ * 5)
 #define IEEE80211_ASSOC_TIMEOUT		(HZ / 5)
+#define IEEE80211_ASSOC_TIMEOUT_LONG	(HZ / 2)
 #define IEEE80211_ASSOC_TIMEOUT_SHORT	(HZ / 10)
 #define IEEE80211_ASSOC_MAX_TRIES	3
 
@@ -209,8 +211,9 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 			     struct ieee80211_channel *channel,
 			     const struct ieee80211_ht_operation *ht_oper,
 			     const struct ieee80211_vht_operation *vht_oper,
-			     struct cfg80211_chan_def *chandef, bool verbose)
+			     struct cfg80211_chan_def *chandef, bool tracking)
 {
+	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	struct cfg80211_chan_def vht_chandef;
 	u32 ht_cfreq, ret;
 
@@ -229,7 +232,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 	ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
 						  channel->band);
 	/* check that channel matches the right operating channel */
-	if (channel->center_freq != ht_cfreq) {
+	if (!tracking && channel->center_freq != ht_cfreq) {
 		/*
 		 * It's possible that some APs are confused here;
 		 * Netgear WNDR3700 sometimes reports 4 higher than
@@ -237,11 +240,10 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 		 * since we look at probe response/beacon data here
 		 * it should be OK.
 		 */
-		if (verbose)
-			sdata_info(sdata,
-				   "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
-				   channel->center_freq, ht_cfreq,
-				   ht_oper->primary_chan, channel->band);
+		sdata_info(sdata,
+			   "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
+			   channel->center_freq, ht_cfreq,
+			   ht_oper->primary_chan, channel->band);
 		ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
 		goto out;
 	}
@@ -295,7 +297,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 				channel->band);
 		break;
 	default:
-		if (verbose)
+		if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
 			sdata_info(sdata,
 				   "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
 				   vht_oper->chan_width);
@@ -304,7 +306,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 	}
 
 	if (!cfg80211_chandef_valid(&vht_chandef)) {
-		if (verbose)
+		if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
 			sdata_info(sdata,
 				   "AP VHT information is invalid, disable VHT\n");
 		ret = IEEE80211_STA_DISABLE_VHT;
@@ -317,7 +319,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 	}
 
 	if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
-		if (verbose)
+		if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
 			sdata_info(sdata,
 				   "AP VHT information doesn't match HT, disable VHT\n");
 		ret = IEEE80211_STA_DISABLE_VHT;
@@ -333,18 +335,27 @@ out:
 	if (ret & IEEE80211_STA_DISABLE_VHT)
 		vht_chandef = *chandef;
 
+	/*
+	 * Ignore the DISABLED flag when we're already connected and only
+	 * tracking the APs beacon for bandwidth changes - otherwise we
+	 * might get disconnected here if we connect to an AP, update our
+	 * regulatory information based on the AP's country IE and the
+	 * information we have is wrong/outdated and disables the channel
+	 * that we're actually using for the connection to the AP.
+	 */
 	while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
-					IEEE80211_CHAN_DISABLED)) {
+					tracking ? 0 :
+						   IEEE80211_CHAN_DISABLED)) {
 		if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
 			ret = IEEE80211_STA_DISABLE_HT |
 			      IEEE80211_STA_DISABLE_VHT;
-			goto out;
+			break;
 		}
 
 		ret |= chandef_downgrade(chandef);
 	}
 
-	if (chandef->width != vht_chandef.width && verbose)
+	if (chandef->width != vht_chandef.width && !tracking)
 		sdata_info(sdata,
 			   "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
 
@@ -384,7 +395,7 @@ static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
 
 	/* calculate new channel (type) based on HT/VHT operation IEs */
 	flags = ieee80211_determine_chantype(sdata, sband, chan, ht_oper,
-					     vht_oper, &chandef, false);
+					     vht_oper, &chandef, true);
 
 	/*
 	 * Downgrade the new channel if we associated with restricted
@@ -3394,10 +3405,13 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
 
 	if (tx_flags == 0) {
 		auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
-		ifmgd->auth_data->timeout_started = true;
+		auth_data->timeout_started = true;
 		run_again(sdata, auth_data->timeout);
 	} else {
-		auth_data->timeout_started = false;
+		auth_data->timeout =
+			round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
+		auth_data->timeout_started = true;
+		run_again(sdata, auth_data->timeout);
 	}
 
 	return 0;
@@ -3434,7 +3448,11 @@ static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
 		assoc_data->timeout_started = true;
 		run_again(sdata, assoc_data->timeout);
 	} else {
-		assoc_data->timeout_started = false;
+		assoc_data->timeout =
+			round_jiffies_up(jiffies +
+					 IEEE80211_ASSOC_TIMEOUT_LONG);
+		assoc_data->timeout_started = true;
+		run_again(sdata, assoc_data->timeout);
 	}
 
 	return 0;
@@ -3829,7 +3847,7 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
 	ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
 						     cbss->channel,
 						     ht_oper, vht_oper,
-						     &chandef, true);
+						     &chandef, false);
 
 	sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
 				      local->rx_chains);
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 4f9f216665e..a8c29fa4f1b 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -765,6 +765,7 @@ void cfg80211_leave(struct cfg80211_registered_device *rdev,
 		cfg80211_leave_mesh(rdev, dev);
 		break;
 	case NL80211_IFTYPE_AP:
+	case NL80211_IFTYPE_P2P_GO:
 		cfg80211_stop_ap(rdev, dev);
 		break;
 	default:
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 25d217d9080..3fcba69817e 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -441,10 +441,12 @@ static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 			goto out_unlock;
 		}
 		*rdev = wiphy_to_dev((*wdev)->wiphy);
-		cb->args[0] = (*rdev)->wiphy_idx;
+		/* 0 is the first index - add 1 to parse only once */
+		cb->args[0] = (*rdev)->wiphy_idx + 1;
 		cb->args[1] = (*wdev)->identifier;
 	} else {
-		struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0]);
+		/* subtract the 1 again here */
+		struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 		struct wireless_dev *tmp;
 
 		if (!wiphy) {