iwlagn: use iwl_sta_id() for aggregation

With the station ID being stored in the
station struct, which mac80211 gives us
for aggregation callbacks, we can also
remove the use of iwl_find_station() in
those code paths.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>

5 files changed, 25 insertions, 28 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
index 89c85d1043b..c402bfc83f3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
@@ -962,7 +962,7 @@ static int iwlagn_txq_ctx_activate_free(struct iwl_priv *priv)
 }
 
 int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
-                        const u8 *ra, u16 tid, u16 *ssn)
+                        struct ieee80211_sta *sta, u16 tid, u16 *ssn)
 {
         int sta_id;
         int tx_fifo;
@@ -976,9 +976,9 @@ int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
                 return tx_fifo;
 
         IWL_WARN(priv, "%s on ra = %pM tid = %d\n",
-                        __func__, ra, tid);
+                        __func__, sta->addr, tid);
 
-        sta_id = iwl_find_station(priv, ra);
+        sta_id = iwl_sta_id(sta);
         if (sta_id == IWL_INVALID_STATION) {
                 IWL_ERR(priv, "Start AGG on invalid station\n");
                 return -ENXIO;
@@ -1012,7 +1012,7 @@ int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
         if (tid_data->tfds_in_queue == 0) {
                 IWL_DEBUG_HT(priv, "HW queue is empty\n");
                 tid_data->agg.state = IWL_AGG_ON;
-                ieee80211_start_tx_ba_cb_irqsafe(vif, ra, tid);
+                ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
         } else {
                 IWL_DEBUG_HT(priv, "HW queue is NOT empty: %d packets in HW queue\n",
                              tid_data->tfds_in_queue);
@@ -1022,23 +1022,18 @@ int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
 }
 
 int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
-                       const u8 *ra, u16 tid)
+                       struct ieee80211_sta *sta, u16 tid)
 {
         int tx_fifo_id, txq_id, sta_id, ssn = -1;
         struct iwl_tid_data *tid_data;
         int write_ptr, read_ptr;
         unsigned long flags;
 
-        if (!ra) {
-                IWL_ERR(priv, "ra = NULL\n");
-                return -EINVAL;
-        }
-
         tx_fifo_id = get_fifo_from_tid(tid);
         if (unlikely(tx_fifo_id < 0))
                 return tx_fifo_id;
 
-        sta_id = iwl_find_station(priv, ra);
+        sta_id = iwl_sta_id(sta);
 
         if (sta_id == IWL_INVALID_STATION) {
                 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
@@ -1048,7 +1043,7 @@ int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
         if (priv->stations[sta_id].tid[tid].agg.state ==
                                 IWL_EMPTYING_HW_QUEUE_ADDBA) {
                 IWL_DEBUG_HT(priv, "AGG stop before setup done\n");
-                ieee80211_stop_tx_ba_cb_irqsafe(vif, ra, tid);
+                ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
                 priv->stations[sta_id].tid[tid].agg.state = IWL_AGG_OFF;
                 return 0;
         }
@@ -1085,7 +1080,7 @@ int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
                                                    tx_fifo_id);
         spin_unlock_irqrestore(&priv->lock, flags);
 
-        ieee80211_stop_tx_ba_cb_irqsafe(vif, ra, tid);
+        ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 
         return 0;
 }
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 8a4b8307354..3265b637db2 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -3154,17 +3154,17 @@ static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
         switch (action) {
         case IEEE80211_AMPDU_RX_START:
                 IWL_DEBUG_HT(priv, "start Rx\n");
-                return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
+                return iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
         case IEEE80211_AMPDU_RX_STOP:
                 IWL_DEBUG_HT(priv, "stop Rx\n");
-                ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
+                ret = iwl_sta_rx_agg_stop(priv, sta, tid);
                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
                         return 0;
                 else
                         return ret;
         case IEEE80211_AMPDU_TX_START:
                 IWL_DEBUG_HT(priv, "start Tx\n");
-                ret = iwlagn_tx_agg_start(priv, vif, sta->addr, tid, ssn);
+                ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
                 if (ret == 0) {
                         priv->_agn.agg_tids_count++;
                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
@@ -3173,7 +3173,7 @@ static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
                 return ret;
         case IEEE80211_AMPDU_TX_STOP:
                 IWL_DEBUG_HT(priv, "stop Tx\n");
-                ret = iwlagn_tx_agg_stop(priv, vif, sta->addr, tid);
+                ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
                 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
                         priv->_agn.agg_tids_count--;
                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.h b/drivers/net/wireless/iwlwifi/iwl-agn.h
index c4417739a64..2d748053358 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.h
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.h
@@ -136,9 +136,9 @@ void iwlagn_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
                               struct ieee80211_tx_info *info);
 int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);
 int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
-                        const u8 *ra, u16 tid, u16 *ssn);
+                        struct ieee80211_sta *sta, u16 tid, u16 *ssn);
 int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
-                       const u8 *ra, u16 tid);
+                       struct ieee80211_sta *sta, u16 tid);
 int iwlagn_txq_check_empty(struct iwl_priv *priv,
                            int sta_id, u8 tid, int txq_id);
 void iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv,
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
index 4be7940ad56..8fec0263f01 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -1324,13 +1324,13 @@ void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
 }
 EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
 
-int iwl_sta_rx_agg_start(struct iwl_priv *priv,
-                         const u8 *addr, int tid, u16 ssn)
+int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
+                         int tid, u16 ssn)
 {
         unsigned long flags;
         int sta_id;
 
-        sta_id = iwl_find_station(priv, addr);
+        sta_id = iwl_sta_id(sta);
         if (sta_id == IWL_INVALID_STATION)
                 return -ENXIO;
 
@@ -1343,16 +1343,17 @@ int iwl_sta_rx_agg_start(struct iwl_priv *priv,
         spin_unlock_irqrestore(&priv->sta_lock, flags);
 
         return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
-                                        CMD_ASYNC);
+                                CMD_ASYNC);
 }
 EXPORT_SYMBOL(iwl_sta_rx_agg_start);
 
-int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid)
+int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
+                        int tid)
 {
         unsigned long flags;
         int sta_id;
 
-        sta_id = iwl_find_station(priv, addr);
+        sta_id = iwl_sta_id(sta);
         if (sta_id == IWL_INVALID_STATION) {
                 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
                 return -ENXIO;
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.h b/drivers/net/wireless/iwlwifi/iwl-sta.h
index 646f644974c..d0ab3f8f7c0 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sta.h
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.h
@@ -80,9 +80,10 @@ int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
 int iwl_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
                        struct ieee80211_sta *sta);
 void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid);
-int iwl_sta_rx_agg_start(struct iwl_priv *priv,
-                         const u8 *addr, int tid, u16 ssn);
-int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid);
+int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
+                         int tid, u16 ssn);
+int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
+                        int tid);
 void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id);
 void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt);