Merge git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next

John W. Linville says:

====================
pull request: wireless-next 2014-07-03

Please pull this first batch of wireless updates intended for the
3.17 stream...

For the mac80211 bits, Johannes says:

"The biggest thing here is probably Arik's TDLS rework, beyond that we
have smaller improvements and features like David's scanning IE thing,
Luca's queue work, some CSA work, etc. Also your PID rate control
removal, of course."

For the iwlwifi bits, Emmanuel says:

"I have here a whole bunch of various things. Andy contributes
better debug prints for dvm specific flows and a module parameter to
completely disable power save for dvm. Andrei is sharing the premises
of his work on CSA - more to come. Eran and Liad keep on working
on the new devices. I have the regular amount of BT Coex stuff and
I continue to work on the firmware error report system adding more
debug capabilities. More to come on that subject too."

On top of that, there are some cleanups to the new rsi driver, some
continuing improvements to the rtl818x drivers, and the usual bundles
of updates to ath9k, b43, mwifiex, wil6210, and a few other bits here
and there.
====================

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

1 files changed, 200 insertions, 70 deletions

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 6886601afe1c..ea79668c2e5f 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -317,7 +317,8 @@ void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
 }
 
 static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
-				   enum queue_stop_reason reason)
+				   enum queue_stop_reason reason,
+				   bool refcounted)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 
@@ -329,7 +330,13 @@ static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
 	if (!test_bit(reason, &local->queue_stop_reasons[queue]))
 		return;
 
-	__clear_bit(reason, &local->queue_stop_reasons[queue]);
+	if (!refcounted)
+		local->q_stop_reasons[queue][reason] = 0;
+	else
+		local->q_stop_reasons[queue][reason]--;
+
+	if (local->q_stop_reasons[queue][reason] == 0)
+		__clear_bit(reason, &local->queue_stop_reasons[queue]);
 
 	if (local->queue_stop_reasons[queue] != 0)
 		/* someone still has this queue stopped */
@@ -344,25 +351,28 @@ static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
 }
 
 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
-				    enum queue_stop_reason reason)
+				    enum queue_stop_reason reason,
+				    bool refcounted)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 	unsigned long flags;
 
 	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
-	__ieee80211_wake_queue(hw, queue, reason);
+	__ieee80211_wake_queue(hw, queue, reason, refcounted);
 	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 }
 
 void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue)
 {
 	ieee80211_wake_queue_by_reason(hw, queue,
-				       IEEE80211_QUEUE_STOP_REASON_DRIVER);
+				       IEEE80211_QUEUE_STOP_REASON_DRIVER,
+				       false);
 }
 EXPORT_SYMBOL(ieee80211_wake_queue);
 
 static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
-				   enum queue_stop_reason reason)
+				   enum queue_stop_reason reason,
+				   bool refcounted)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 	struct ieee80211_sub_if_data *sdata;
@@ -373,10 +383,13 @@ static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
 	if (WARN_ON(queue >= hw->queues))
 		return;
 
-	if (test_bit(reason, &local->queue_stop_reasons[queue]))
-		return;
+	if (!refcounted)
+		local->q_stop_reasons[queue][reason] = 1;
+	else
+		local->q_stop_reasons[queue][reason]++;
 
-	__set_bit(reason, &local->queue_stop_reasons[queue]);
+	if (__test_and_set_bit(reason, &local->queue_stop_reasons[queue]))
+		return;
 
 	if (local->hw.queues < IEEE80211_NUM_ACS)
 		n_acs = 1;
@@ -398,20 +411,22 @@ static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
 }
 
 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
-				    enum queue_stop_reason reason)
+				    enum queue_stop_reason reason,
+				    bool refcounted)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 	unsigned long flags;
 
 	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
-	__ieee80211_stop_queue(hw, queue, reason);
+	__ieee80211_stop_queue(hw, queue, reason, refcounted);
 	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 }
 
 void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue)
 {
 	ieee80211_stop_queue_by_reason(hw, queue,
-				       IEEE80211_QUEUE_STOP_REASON_DRIVER);
+				       IEEE80211_QUEUE_STOP_REASON_DRIVER,
+				       false);
 }
 EXPORT_SYMBOL(ieee80211_stop_queue);
 
@@ -429,9 +444,11 @@ void ieee80211_add_pending_skb(struct ieee80211_local *local,
 	}
 
 	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
-	__ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD);
+	__ieee80211_stop_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
+			       false);
 	__skb_queue_tail(&local->pending[queue], skb);
-	__ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD);
+	__ieee80211_wake_queue(hw, queue, IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
+			       false);
 	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 }
 
@@ -455,20 +472,23 @@ void ieee80211_add_pending_skbs(struct ieee80211_local *local,
 		queue = info->hw_queue;
 
 		__ieee80211_stop_queue(hw, queue,
-				IEEE80211_QUEUE_STOP_REASON_SKB_ADD);
+				IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
+				false);
 
 		__skb_queue_tail(&local->pending[queue], skb);
 	}
 
 	for (i = 0; i < hw->queues; i++)
 		__ieee80211_wake_queue(hw, i,
-			IEEE80211_QUEUE_STOP_REASON_SKB_ADD);
+			IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
+			false);
 	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 }
 
 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
 				     unsigned long queues,
-				     enum queue_stop_reason reason)
+				     enum queue_stop_reason reason,
+				     bool refcounted)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 	unsigned long flags;
@@ -477,7 +497,7 @@ void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
 	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 
 	for_each_set_bit(i, &queues, hw->queues)
-		__ieee80211_stop_queue(hw, i, reason);
+		__ieee80211_stop_queue(hw, i, reason, refcounted);
 
 	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 }
@@ -485,7 +505,8 @@ void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
 void ieee80211_stop_queues(struct ieee80211_hw *hw)
 {
 	ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
-					IEEE80211_QUEUE_STOP_REASON_DRIVER);
+					IEEE80211_QUEUE_STOP_REASON_DRIVER,
+					false);
 }
 EXPORT_SYMBOL(ieee80211_stop_queues);
 
@@ -508,7 +529,8 @@ EXPORT_SYMBOL(ieee80211_queue_stopped);
 
 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
 				     unsigned long queues,
-				     enum queue_stop_reason reason)
+				     enum queue_stop_reason reason,
+				     bool refcounted)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 	unsigned long flags;
@@ -517,7 +539,7 @@ void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
 	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
 
 	for_each_set_bit(i, &queues, hw->queues)
-		__ieee80211_wake_queue(hw, i, reason);
+		__ieee80211_wake_queue(hw, i, reason, refcounted);
 
 	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 }
@@ -525,17 +547,16 @@ void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
 void ieee80211_wake_queues(struct ieee80211_hw *hw)
 {
 	ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
-					IEEE80211_QUEUE_STOP_REASON_DRIVER);
+					IEEE80211_QUEUE_STOP_REASON_DRIVER,
+					false);
 }
 EXPORT_SYMBOL(ieee80211_wake_queues);
 
-void ieee80211_flush_queues(struct ieee80211_local *local,
-			    struct ieee80211_sub_if_data *sdata)
+static unsigned int
+ieee80211_get_vif_queues(struct ieee80211_local *local,
+			 struct ieee80211_sub_if_data *sdata)
 {
-	u32 queues;
-
-	if (!local->ops->flush)
-		return;
+	unsigned int queues;
 
 	if (sdata && local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) {
 		int ac;
@@ -551,13 +572,46 @@ void ieee80211_flush_queues(struct ieee80211_local *local,
 		queues = BIT(local->hw.queues) - 1;
 	}
 
-	ieee80211_stop_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP,
-					IEEE80211_QUEUE_STOP_REASON_FLUSH);
+	return queues;
+}
+
+void ieee80211_flush_queues(struct ieee80211_local *local,
+			    struct ieee80211_sub_if_data *sdata)
+{
+	unsigned int queues;
+
+	if (!local->ops->flush)
+		return;
+
+	queues = ieee80211_get_vif_queues(local, sdata);
+
+	ieee80211_stop_queues_by_reason(&local->hw, queues,
+					IEEE80211_QUEUE_STOP_REASON_FLUSH,
+					false);
 
 	drv_flush(local, sdata, queues, false);
 
-	ieee80211_wake_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP,
-					IEEE80211_QUEUE_STOP_REASON_FLUSH);
+	ieee80211_wake_queues_by_reason(&local->hw, queues,
+					IEEE80211_QUEUE_STOP_REASON_FLUSH,
+					false);
+}
+
+void ieee80211_stop_vif_queues(struct ieee80211_local *local,
+			       struct ieee80211_sub_if_data *sdata,
+			       enum queue_stop_reason reason)
+{
+	ieee80211_stop_queues_by_reason(&local->hw,
+					ieee80211_get_vif_queues(local, sdata),
+					reason, true);
+}
+
+void ieee80211_wake_vif_queues(struct ieee80211_local *local,
+			       struct ieee80211_sub_if_data *sdata,
+			       enum queue_stop_reason reason)
+{
+	ieee80211_wake_queues_by_reason(&local->hw,
+					ieee80211_get_vif_queues(local, sdata),
+					reason, true);
 }
 
 static void __iterate_active_interfaces(struct ieee80211_local *local,
@@ -1165,14 +1219,17 @@ void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
 	}
 }
 
-int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
-			     size_t buffer_len, const u8 *ie, size_t ie_len,
-			     enum ieee80211_band band, u32 rate_mask,
-			     struct cfg80211_chan_def *chandef)
+static int ieee80211_build_preq_ies_band(struct ieee80211_local *local,
+					 u8 *buffer, size_t buffer_len,
+					 const u8 *ie, size_t ie_len,
+					 enum ieee80211_band band,
+					 u32 rate_mask,
+					 struct cfg80211_chan_def *chandef,
+					 size_t *offset)
 {
 	struct ieee80211_supported_band *sband;
 	u8 *pos = buffer, *end = buffer + buffer_len;
-	size_t offset = 0, noffset;
+	size_t noffset;
 	int supp_rates_len, i;
 	u8 rates[32];
 	int num_rates;
@@ -1180,6 +1237,8 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
 	int shift;
 	u32 rate_flags;
 
+	*offset = 0;
+
 	sband = local->hw.wiphy->bands[band];
 	if (WARN_ON_ONCE(!sband))
 		return 0;
@@ -1218,12 +1277,12 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
 		noffset = ieee80211_ie_split(ie, ie_len,
 					     before_extrates,
 					     ARRAY_SIZE(before_extrates),
-					     offset);
-		if (end - pos < noffset - offset)
+					     *offset);
+		if (end - pos < noffset - *offset)
 			goto out_err;
-		memcpy(pos, ie + offset, noffset - offset);
-		pos += noffset - offset;
-		offset = noffset;
+		memcpy(pos, ie + *offset, noffset - *offset);
+		pos += noffset - *offset;
+		*offset = noffset;
 	}
 
 	ext_rates_len = num_rates - supp_rates_len;
@@ -1257,12 +1316,12 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
 		};
 		noffset = ieee80211_ie_split(ie, ie_len,
 					     before_ht, ARRAY_SIZE(before_ht),
-					     offset);
-		if (end - pos < noffset - offset)
+					     *offset);
+		if (end - pos < noffset - *offset)
 			goto out_err;
-		memcpy(pos, ie + offset, noffset - offset);
-		pos += noffset - offset;
-		offset = noffset;
+		memcpy(pos, ie + *offset, noffset - *offset);
+		pos += noffset - *offset;
+		*offset = noffset;
 	}
 
 	if (sband->ht_cap.ht_supported) {
@@ -1297,12 +1356,12 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
 		};
 		noffset = ieee80211_ie_split(ie, ie_len,
 					     before_vht, ARRAY_SIZE(before_vht),
-					     offset);
-		if (end - pos < noffset - offset)
+					     *offset);
+		if (end - pos < noffset - *offset)
 			goto out_err;
-		memcpy(pos, ie + offset, noffset - offset);
-		pos += noffset - offset;
-		offset = noffset;
+		memcpy(pos, ie + *offset, noffset - *offset);
+		pos += noffset - *offset;
+		*offset = noffset;
 	}
 
 	if (sband->vht_cap.vht_supported) {
@@ -1312,21 +1371,54 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
 						 sband->vht_cap.cap);
 	}
 
-	/* add any remaining custom IEs */
-	if (ie && ie_len) {
-		noffset = ie_len;
-		if (end - pos < noffset - offset)
-			goto out_err;
-		memcpy(pos, ie + offset, noffset - offset);
-		pos += noffset - offset;
-	}
-
 	return pos - buffer;
  out_err:
 	WARN_ONCE(1, "not enough space for preq IEs\n");
 	return pos - buffer;
 }
 
+int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
+			     size_t buffer_len,
+			     struct ieee80211_scan_ies *ie_desc,
+			     const u8 *ie, size_t ie_len,
+			     u8 bands_used, u32 *rate_masks,
+			     struct cfg80211_chan_def *chandef)
+{
+	size_t pos = 0, old_pos = 0, custom_ie_offset = 0;
+	int i;
+
+	memset(ie_desc, 0, sizeof(*ie_desc));
+
+	for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
+		if (bands_used & BIT(i)) {
+			pos += ieee80211_build_preq_ies_band(local,
+							     buffer + pos,
+							     buffer_len - pos,
+							     ie, ie_len, i,
+							     rate_masks[i],
+							     chandef,
+							     &custom_ie_offset);
+			ie_desc->ies[i] = buffer + old_pos;
+			ie_desc->len[i] = pos - old_pos;
+			old_pos = pos;
+		}
+	}
+
+	/* add any remaining custom IEs */
+	if (ie && ie_len) {
+		if (WARN_ONCE(buffer_len - pos < ie_len - custom_ie_offset,
+			      "not enough space for preq custom IEs\n"))
+			return pos;
+		memcpy(buffer + pos, ie + custom_ie_offset,
+		       ie_len - custom_ie_offset);
+		ie_desc->common_ies = buffer + pos;
+		ie_desc->common_ie_len = ie_len - custom_ie_offset;
+		pos += ie_len - custom_ie_offset;
+	}
+
+	return pos;
+};
+
 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 					  u8 *dst, u32 ratemask,
 					  struct ieee80211_channel *chan,
@@ -1339,6 +1431,8 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 	struct sk_buff *skb;
 	struct ieee80211_mgmt *mgmt;
 	int ies_len;
+	u32 rate_masks[IEEE80211_NUM_BANDS] = {};
+	struct ieee80211_scan_ies dummy_ie_desc;
 
 	/*
 	 * Do not send DS Channel parameter for directed probe requests
@@ -1356,10 +1450,11 @@ struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
 	if (!skb)
 		return NULL;
 
+	rate_masks[chan->band] = ratemask;
 	ies_len = ieee80211_build_preq_ies(local, skb_tail_pointer(skb),
-					   skb_tailroom(skb),
-					   ie, ie_len, chan->band,
-					   ratemask, &chandef);
+					   skb_tailroom(skb), &dummy_ie_desc,
+					   ie, ie_len, BIT(chan->band),
+					   rate_masks, &chandef);
 	skb_put(skb, ies_len);
 
 	if (dst) {
@@ -1603,7 +1698,9 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	if (local->use_chanctx) {
 		mutex_lock(&local->chanctx_mtx);
 		list_for_each_entry(ctx, &local->chanctx_list, list)
-			WARN_ON(drv_add_chanctx(local, ctx));
+			if (ctx->replace_state !=
+			    IEEE80211_CHANCTX_REPLACES_OTHER)
+				WARN_ON(drv_add_chanctx(local, ctx));
 		mutex_unlock(&local->chanctx_mtx);
 
 		list_for_each_entry(sdata, &local->interfaces, list) {
@@ -1797,7 +1894,8 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	}
 
 	ieee80211_wake_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
-					IEEE80211_QUEUE_STOP_REASON_SUSPEND);
+					IEEE80211_QUEUE_STOP_REASON_SUSPEND,
+					false);
 
 	/*
 	 * Reconfigure sched scan if it was interrupted by FW restart or
@@ -2835,6 +2933,35 @@ void ieee80211_recalc_dtim(struct ieee80211_local *local,
 	ps->dtim_count = dtim_count;
 }
 
+static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local,
+					 struct ieee80211_chanctx *ctx)
+{
+	struct ieee80211_sub_if_data *sdata;
+	u8 radar_detect = 0;
+
+	lockdep_assert_held(&local->chanctx_mtx);
+
+	if (WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED))
+		return 0;
+
+	list_for_each_entry(sdata, &ctx->reserved_vifs, reserved_chanctx_list)
+		if (sdata->reserved_radar_required)
+			radar_detect |= BIT(sdata->reserved_chandef.width);
+
+	/*
+	 * An in-place reservation context should not have any assigned vifs
+	 * until it replaces the other context.
+	 */
+	WARN_ON(ctx->replace_state == IEEE80211_CHANCTX_REPLACES_OTHER &&
+		!list_empty(&ctx->assigned_vifs));
+
+	list_for_each_entry(sdata, &ctx->assigned_vifs, assigned_chanctx_list)
+		if (sdata->radar_required)
+			radar_detect |= BIT(sdata->vif.bss_conf.chandef.width);
+
+	return radar_detect;
+}
+
 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
 				 const struct cfg80211_chan_def *chandef,
 				 enum ieee80211_chanctx_mode chanmode,
@@ -2876,8 +3003,9 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
 		num[iftype] = 1;
 
 	list_for_each_entry(ctx, &local->chanctx_list, list) {
-		if (ctx->conf.radar_enabled)
-			radar_detect |= BIT(ctx->conf.def.width);
+		if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
+			continue;
+		radar_detect |= ieee80211_chanctx_radar_detect(local, ctx);
 		if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) {
 			num_different_channels++;
 			continue;
@@ -2934,10 +3062,12 @@ int ieee80211_max_num_channels(struct ieee80211_local *local)
 	lockdep_assert_held(&local->chanctx_mtx);
 
 	list_for_each_entry(ctx, &local->chanctx_list, list) {
+		if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED)
+			continue;
+
 		num_different_channels++;
 
-		if (ctx->conf.radar_enabled)
-			radar_detect |= BIT(ctx->conf.def.width);
+		radar_detect |= ieee80211_chanctx_radar_detect(local, ctx);
 	}
 
 	list_for_each_entry_rcu(sdata, &local->interfaces, list)