iwlwifi: mvm: keep track of tid associated with each queue

When sending the SCD_QUEUE_CONFIG command, the queue is
associated to a specific TID. If later there is a need to
use this TID on a different queue instead, it first needs to
be unassociated from the first queue.

Keep track for every queue what TID is associated with it.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index ee5a9ad..1806495 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -772,6 +772,7 @@ struct iwl_mvm {
                u8 ra_sta_id; /* The RA this queue is mapped to, if exists */
                bool reserved; /* Is this the TXQ reserved for a STA */
                u8 mac80211_ac; /* The mac80211 AC this queue is mapped to */
+               u8 txq_tid; /* The TID "owner" of this queue*/
                u16 tid_bitmap; /* Bitmap of the TIDs mapped to this queue */
                /* Timestamp for inactivation per TID of this queue */
                unsigned long last_frame_time[IWL_MAX_TID_COUNT + 1];

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
index 1f235e8..730ba78 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
@@ -562,6 +562,7 @@ int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid,
 
        cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
        cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac];
+       cmd.tid = mvm->queue_info[queue].txq_tid;
        mq = mvm->queue_info[queue].hw_queue_to_mac80211;
        shared_queue = (mvm->queue_info[queue].hw_queue_refcount > 1);
        spin_unlock_bh(&mvm->queue_info_lock);
@@ -591,6 +592,11 @@ int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid,
                             cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF,
                             ssn, wdg_timeout);
 
+       /* Update the TID "owner" of the queue */
+       spin_lock_bh(&mvm->queue_info_lock);
+       mvm->queue_info[queue].txq_tid = tid;
+       spin_unlock_bh(&mvm->queue_info_lock);
+
        /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */
 
        /* Redirect to lower AC */
@@ -749,6 +755,7 @@ static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,
                ac = mvm->queue_info[queue].mac80211_ac;
                cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
                cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[ac];
+               cmd.tid = mvm->queue_info[queue].txq_tid;
                spin_unlock_bh(&mvm->queue_info_lock);
 
                /* Disable the queue */

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
index dae64a6..423efab 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
@@ -669,6 +669,8 @@ void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
                                tid_to_mac80211_ac[cfg->tid];
                else
                        mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
+
+               mvm->queue_info[queue].txq_tid = cfg->tid;
        }
 
        IWL_DEBUG_TX_QUEUES(mvm,
@@ -761,6 +763,7 @@ void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
        }
 
        cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
+       cmd.tid = mvm->queue_info[queue].txq_tid;
 
        /* Make sure queue info is correct even though we overwrite it */
        WARN(mvm->queue_info[queue].hw_queue_refcount ||