From: Avraham Stern <avraham.stern@xxxxxxxxx>
When a queue is reserved for aggregation, the queue id is assigned
to the tid_data. This is fine since iwl_mvm_sta_tx_agg_oper()
takes care of allocating the queue before actual tx starts.
When the reservation is cancelled (e.g. when the AP declined the
aggregation request) the tid_data is not cleared. As a result,
following tx for this tid was trying to use an unallocated queue.
Fix this by setting the txq_id for the tid to invalid when unreserving
the queue.
Signed-off-by: Avraham Stern <avraham.stern@xxxxxxxxx>
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
---
drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
index 5be4bae5b70d..0b3a780aee12 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
@@ -2696,8 +2696,10 @@ int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,
struct iwl_mvm_sta *mvmsta,
- u16 txq_id)
+ struct iwl_mvm_tid_data *tid_data)
{
+ u16 txq_id = tid_data->txq_id;
+
if (iwl_mvm_has_new_tx_api(mvm))
return;
@@ -2709,8 +2711,10 @@ static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,
* allocated through iwl_mvm_enable_txq, so we can just mark it back as
* free.
*/
- if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED)
+ if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) {
mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;
+ tid_data->txq_id = IWL_MVM_INVALID_QUEUE;
+ }
spin_unlock_bh(&mvm->queue_info_lock);
}
@@ -2741,7 +2745,7 @@ int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
mvmsta->agg_tids &= ~BIT(tid);
- iwl_mvm_unreserve_agg_queue(mvm, mvmsta, txq_id);
+ iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
switch (tid_data->state) {
case IWL_AGG_ON:
@@ -2808,7 +2812,7 @@ int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
mvmsta->agg_tids &= ~BIT(tid);
spin_unlock_bh(&mvmsta->lock);
- iwl_mvm_unreserve_agg_queue(mvm, mvmsta, txq_id);
+ iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);
if (old_state >= IWL_AGG_ON) {
iwl_mvm_drain_sta(mvm, mvmsta, true);
--
2.16.2
