[07/10] iwlagn: store station rate scale information in mac80211 station structure

Commit Message

Reinette Chatre Oct. 16, 2009, 9:25 p.m. UTC

None

Patch

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index 2d4ec1a..27d4ece 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -2475,19 +2475,17 @@  static void *rs_alloc_sta(void *priv_rate, struct ieee80211_sta *sta,
 			  gfp_t gfp)
 {
 	struct iwl_lq_sta *lq_sta;
+	struct iwl_station_priv *sta_priv = (struct iwl_station_priv *) sta->drv_priv;
 	struct iwl_priv *priv;
 	int i, j;
 
 	priv = (struct iwl_priv *)priv_rate;
 	IWL_DEBUG_RATE(priv, "create station rate scale window\n");
 
-	lq_sta = kzalloc(sizeof(struct iwl_lq_sta), gfp);
+	lq_sta = &sta_priv->lq_sta;
 
-	if (lq_sta == NULL)
-		return NULL;
 	lq_sta->lq.sta_id = 0xff;
 
-
 	for (j = 0; j < LQ_SIZE; j++)
 		for (i = 0; i < IWL_RATE_COUNT; i++)
 			rs_rate_scale_clear_window(&lq_sta->lq_info[j].win[i]);
@@ -2719,11 +2717,9 @@  static void rs_free(void *priv_rate)
 static void rs_free_sta(void *priv_r, struct ieee80211_sta *sta,
 			void *priv_sta)
 {
-	struct iwl_lq_sta *lq_sta = priv_sta;
 	struct iwl_priv *priv __maybe_unused = priv_r;
 
 	IWL_DEBUG_RATE(priv, "enter\n");
-	kfree(lq_sta);
 	IWL_DEBUG_RATE(priv, "leave\n");
 }
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index c3e7101..3664d01 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -2305,6 +2305,7 @@  static int iwl_setup_mac(struct iwl_priv *priv)
 		hw->flags |= IEEE80211_HW_SUPPORTS_PS |
 			     IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
 
+	hw->sta_data_size = sizeof(struct iwl_station_priv);
 	hw->wiphy->interface_modes =
 		BIT(NL80211_IFTYPE_STATION) |
 		BIT(NL80211_IFTYPE_ADHOC);
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 35d5794..6ba082d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -576,6 +576,19 @@  struct iwl_station_entry {
 	struct iwl_hw_key keyinfo;
 };
 
+/*
+ * iwl_station_priv: Driver's private station information
+ *
+ * When mac80211 creates a station it reserves some space (hw->sta_data_size)
+ * in the structure for use by driver. This structure is places in that
+ * space.
+ *
+ * At the moment use it for the station's rate scaling information.
+ */
+struct iwl_station_priv {
+	struct iwl_lq_sta lq_sta;
+};
+
 /* one for each uCode image (inst/data, boot/init/runtime) */
 struct fw_desc {
 	void *v_addr;		/* access by driver */