releases/4.9.28/iwlwifi-mvm-use-aux-queue-for-offchannel-frames-in-dqa.patch

   1 From 6574dc943fc32a2fce69fab14891abca7eecb67c Mon Sep 17 00:00:00 2001
   2 From: Beni Lev <beni.lev@intel.com>
   3 Date: Thu, 17 Nov 2016 14:03:17 +0200
   4 Subject: iwlwifi: mvm: Use aux queue for offchannel frames in dqa
   5
   6 From: Beni Lev <beni.lev@intel.com>
   7
   8 commit 6574dc943fc32a2fce69fab14891abca7eecb67c upstream.
   9
  10 Since offchannel activity doesn't always require a BSS, e.g. ANQP
  11 sessions, offchannel frames should not use the BSS queue, because it
  12 might not be initialized.
  13 Use the auxilary queue instead
  14
  15 Fixes: e3118ad74d7e ("iwlwifi: mvm: support tdls in dqa mode")
  16 Signed-off-by: Beni Lev <beni.lev@intel.com>
  17 Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
  18 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  19
  20 ---
  21  drivers/net/wireless/intel/iwlwifi/mvm/tx.c |   10 ++++++----
  22  1 file changed, 6 insertions(+), 4 deletions(-)
  23
  24 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
  25 +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
  26 @@ -568,9 +568,10 @@ int iwl_mvm_tx_skb_non_sta(struct iwl_mv
  27          * (this is not possible for unicast packets as a TLDS discovery
  28          * response are sent without a station entry); otherwise use the
  29          * AUX station.
  30 -        * In DQA mode, if vif is of type STATION and frames are not multicast,
  31 -        * they should be sent from the BSS queue. For example, TDLS setup
  32 -        * frames should be sent on this queue, as they go through the AP.
  33 +        * In DQA mode, if vif is of type STATION and frames are not multicast
  34 +        * or offchannel, they should be sent from the BSS queue.
  35 +        * For example, TDLS setup frames should be sent on this queue,
  36 +        * as they go through the AP.
  37          */
  38         sta_id = mvm->aux_sta.sta_id;
  39         if (info.control.vif) {
  40 @@ -592,7 +593,8 @@ int iwl_mvm_tx_skb_non_sta(struct iwl_mv
  41                         if (ap_sta_id != IWL_MVM_STATION_COUNT)
  42                                 sta_id = ap_sta_id;
  43                 } else if (iwl_mvm_is_dqa_supported(mvm) &&
  44 -                          info.control.vif->type == NL80211_IFTYPE_STATION) {
  45 +                          info.control.vif->type == NL80211_IFTYPE_STATION &&
  46 +                          queue != mvm->aux_queue) {
  47                         queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
  48                 }
  49         }