mwl8k: implement AP firmware station database maintenance

STA firmware uses UPDATE_STADB to manipulate the hardware station
database, whereas AP firmware uses SET_NEW_STN -- this implements the
latter, and hooks it into mwl8k_sta_notify(), to be used if we're
running on AP firmware.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mwl8k.c

@@ -281,6 +281,7 @@ static const struct ieee80211_rate mwl8k_rates[] = {
 #define MWL8K_CMD_ENABLE_SNIFFER	0x0150
 #define MWL8K_CMD_SET_MAC_ADDR		0x0202
 #define MWL8K_CMD_SET_RATEADAPT_MODE	0x0203
+#define MWL8K_CMD_SET_NEW_STN		0x1111
 #define MWL8K_CMD_UPDATE_STADB		0x1123
 
 static const char *mwl8k_cmd_name(u16 cmd, char *buf, int bufsize)
@@ -313,6 +314,7 @@ static const char *mwl8k_cmd_name(u16 cmd, char *buf, int bufsize)
 		MWL8K_CMDNAME(ENABLE_SNIFFER);
 		MWL8K_CMDNAME(SET_MAC_ADDR);
 		MWL8K_CMDNAME(SET_RATEADAPT_MODE);
+		MWL8K_CMDNAME(SET_NEW_STN);
 		MWL8K_CMDNAME(UPDATE_STADB);
 	default:
 		snprintf(buf, bufsize, "0x%x", cmd);
@@ -2659,6 +2661,90 @@ static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
 	return rc;
 }
 
+/*
+ * CMD_SET_NEW_STN.
+ */
+struct mwl8k_cmd_set_new_stn {
+	struct mwl8k_cmd_pkt header;
+	__le16 aid;
+	__u8 mac_addr[6];
+	__le16 stn_id;
+	__le16 action;
+	__le16 rsvd;
+	__le32 legacy_rates;
+	__u8 ht_rates[4];
+	__le16 cap_info;
+	__le16 ht_capabilities_info;
+	__u8 mac_ht_param_info;
+	__u8 rev;
+	__u8 control_channel;
+	__u8 add_channel;
+	__le16 op_mode;
+	__le16 stbc;
+	__u8 add_qos_info;
+	__u8 is_qos_sta;
+	__le32 fw_sta_ptr;
+} __attribute__((packed));
+
+#define MWL8K_STA_ACTION_ADD		0
+#define MWL8K_STA_ACTION_REMOVE		2
+
+static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
+				     struct ieee80211_vif *vif,
+				     struct ieee80211_sta *sta)
+{
+	struct mwl8k_cmd_set_new_stn *cmd;
+	int rc;
+
+	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+	if (cmd == NULL)
+		return -ENOMEM;
+
+	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
+	cmd->header.length = cpu_to_le16(sizeof(*cmd));
+	cmd->aid = cpu_to_le16(sta->aid);
+	memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
+	cmd->stn_id = cpu_to_le16(sta->aid);
+	cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
+	cmd->legacy_rates = cpu_to_le32(sta->supp_rates[IEEE80211_BAND_2GHZ]);
+	if (sta->ht_cap.ht_supported) {
+		cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
+		cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
+		cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
+		cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
+		cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
+		cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
+			((sta->ht_cap.ampdu_density & 7) << 2);
+		cmd->is_qos_sta = 1;
+	}
+
+	rc = mwl8k_post_cmd(hw, &cmd->header);
+	kfree(cmd);
+
+	return rc;
+}
+
+static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
+				     struct ieee80211_vif *vif, u8 *addr)
+{
+	struct mwl8k_cmd_set_new_stn *cmd;
+	int rc;
+
+	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+	if (cmd == NULL)
+		return -ENOMEM;
+
+	cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
+	cmd->header.length = cpu_to_le16(sizeof(*cmd));
+	memcpy(cmd->mac_addr, addr, ETH_ALEN);
+	cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
+
+	rc = mwl8k_post_cmd(hw, &cmd->header);
+	kfree(cmd);
+
+	return rc;
+}
+
 /*
  * CMD_UPDATE_STADB.
  */
@@ -3247,23 +3333,15 @@ struct mwl8k_sta_notify_item
 	struct ieee80211_sta sta;
 };
 
-static void mwl8k_sta_notify_worker(struct work_struct *work)
+static void
+mwl8k_do_sta_notify(struct ieee80211_hw *hw, struct mwl8k_sta_notify_item *s)
 {
-	struct mwl8k_priv *priv =
-		container_of(work, struct mwl8k_priv, sta_notify_worker);
-	struct ieee80211_hw *hw = priv->hw;
-
-	spin_lock_bh(&priv->sta_notify_list_lock);
-	while (!list_empty(&priv->sta_notify_list)) {
-		struct mwl8k_sta_notify_item *s;
-
-		s = list_entry(priv->sta_notify_list.next,
-			       struct mwl8k_sta_notify_item, list);
-		list_del(&s->list);
-
-		spin_unlock_bh(&priv->sta_notify_list_lock);
+	struct mwl8k_priv *priv = hw->priv;
 
-		if (s->cmd == STA_NOTIFY_ADD) {
+	/*
+	 * STA firmware uses UPDATE_STADB, AP firmware uses SET_NEW_STN.
+	 */
+	if (!priv->ap_fw && s->cmd == STA_NOTIFY_ADD) {
 		int rc;
 
 		rc = mwl8k_cmd_update_stadb_add(hw, s->vif, &s->sta);
@@ -3276,10 +3354,32 @@ static void mwl8k_sta_notify_worker(struct work_struct *work)
 				MWL8K_STA(sta)->peer_id = rc;
 			rcu_read_unlock();
 		}
-		} else {
+	} else if (!priv->ap_fw && s->cmd == STA_NOTIFY_REMOVE) {
 		mwl8k_cmd_update_stadb_del(hw, s->vif, s->sta.addr);
+	} else if (priv->ap_fw && s->cmd == STA_NOTIFY_ADD) {
+		mwl8k_cmd_set_new_stn_add(hw, s->vif, &s->sta);
+	} else if (priv->ap_fw && s->cmd == STA_NOTIFY_REMOVE) {
+		mwl8k_cmd_set_new_stn_del(hw, s->vif, s->sta.addr);
 	}
+}
+
+static void mwl8k_sta_notify_worker(struct work_struct *work)
+{
+	struct mwl8k_priv *priv =
+		container_of(work, struct mwl8k_priv, sta_notify_worker);
+	struct ieee80211_hw *hw = priv->hw;
+
+	spin_lock_bh(&priv->sta_notify_list_lock);
+	while (!list_empty(&priv->sta_notify_list)) {
+		struct mwl8k_sta_notify_item *s;
+
+		s = list_entry(priv->sta_notify_list.next,
+			       struct mwl8k_sta_notify_item, list);
+		list_del(&s->list);
+
+		spin_unlock_bh(&priv->sta_notify_list_lock);
 
+		mwl8k_do_sta_notify(hw, s);
 		kfree(s);
 
 		spin_lock_bh(&priv->sta_notify_list_lock);