linux-kernel - [PATCH 4.10 052/129] iwlwifi: mvm: Use aux queue for offchannel frames in dqa

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Message-Id: <20170511141223.592301419@linuxfoundation.org>
Date:   Thu, 11 May 2017 16:11:40 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Beni Lev <beni.lev@...el.com>,
        Luca Coelho <luciano.coelho@...el.com>
Subject: [PATCH 4.10 052/129] iwlwifi: mvm: Use aux queue for offchannel frames in dqa

4.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Beni Lev <beni.lev@...el.com>

commit 6574dc943fc32a2fce69fab14891abca7eecb67c upstream.

Since offchannel activity doesn't always require a BSS, e.g. ANQP
sessions, offchannel frames should not use the BSS queue, because it
might not be initialized.
Use the auxilary queue instead

Fixes: e3118ad74d7e ("iwlwifi: mvm: support tdls in dqa mode")
Signed-off-by: Beni Lev <beni.lev@...el.com>
Signed-off-by: Luca Coelho <luciano.coelho@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/net/wireless/intel/iwlwifi/mvm/tx.c |   10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

--- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
@@ -568,9 +568,10 @@ int iwl_mvm_tx_skb_non_sta(struct iwl_mv
 	 * (this is not possible for unicast packets as a TLDS discovery
 	 * response are sent without a station entry); otherwise use the
 	 * AUX station.
-	 * In DQA mode, if vif is of type STATION and frames are not multicast,
-	 * they should be sent from the BSS queue. For example, TDLS setup
-	 * frames should be sent on this queue, as they go through the AP.
+	 * In DQA mode, if vif is of type STATION and frames are not multicast
+	 * or offchannel, they should be sent from the BSS queue.
+	 * For example, TDLS setup frames should be sent on this queue,
+	 * as they go through the AP.
 	 */
 	sta_id = mvm->aux_sta.sta_id;
 	if (info.control.vif) {
@@ -592,7 +593,8 @@ int iwl_mvm_tx_skb_non_sta(struct iwl_mv
 			if (ap_sta_id != IWL_MVM_STATION_COUNT)
 				sta_id = ap_sta_id;
 		} else if (iwl_mvm_is_dqa_supported(mvm) &&
-			   info.control.vif->type == NL80211_IFTYPE_STATION) {
+			   info.control.vif->type == NL80211_IFTYPE_STATION &&
+			   queue != mvm->aux_queue) {
 			queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
 		}
 	}