ath6kl: enable enhanced bmiss detection

Enable enhanced bmiss detection if the firmware supports it. This
feature is only enabled on some firmwares since it comes with a power
cost.

Also add a few missing command ids to keep the enums straight.

kvalo: fix a compiler with ath6kl_err(), add few empty lines

Signed-off-by: Thomas Pedersen <c_tpeder@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath6kl/cfg80211.c

@@ -576,6 +576,9 @@ static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
 
 	vif->nw_type = vif->next_mode;
 
+	/* enable enhanced bmiss detection if applicable */
+	ath6kl_cfg80211_sta_bmiss_enhance(vif, true);
+
 	if (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT)
 		nw_subtype = SUBTYPE_P2PCLIENT;
 
@@ -1512,6 +1515,9 @@ static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
 		}
 	}
 
+	/* need to clean up enhanced bmiss detection fw state */
+	ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
+
 set_iface_type:
 	switch (type) {
 	case NL80211_IFTYPE_STATION:
@@ -2618,6 +2624,30 @@ static int ath6kl_set_channel(struct wiphy *wiphy, struct net_device *dev,
 	return 0;
 }
 
+void ath6kl_cfg80211_sta_bmiss_enhance(struct ath6kl_vif *vif, bool enable)
+{
+	int err;
+
+	if (WARN_ON(!test_bit(WMI_READY, &vif->ar->flag)))
+		return;
+
+	if (vif->nw_type != INFRA_NETWORK)
+		return;
+
+	if (!test_bit(ATH6KL_FW_CAPABILITY_BMISS_ENHANCE,
+		      vif->ar->fw_capabilities))
+		return;
+
+	ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s fw bmiss enhance\n",
+		   enable ? "enable" : "disable");
+
+	err = ath6kl_wmi_sta_bmiss_enhance_cmd(vif->ar->wmi,
+					       vif->fw_vif_idx, enable);
+	if (err)
+		ath6kl_err("failed to %s enhanced bmiss detection: %d\n",
+			   enable ? "enable" : "disable", err);
+}
+
 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon,
 				u8 *rsn_capab)
 {

drivers/net/wireless/ath/ath6kl/cfg80211.h

@@ -62,5 +62,7 @@ void ath6kl_cfg80211_cleanup(struct ath6kl *ar);
 
 struct ath6kl *ath6kl_cfg80211_create(void);
 void ath6kl_cfg80211_destroy(struct ath6kl *ar);
+/* TODO: remove this once ath6kl_vif_cleanup() is moved to cfg80211.c */
+void ath6kl_cfg80211_sta_bmiss_enhance(struct ath6kl_vif *vif, bool enable);
 
 #endif /* ATH6KL_CFG80211_H */

drivers/net/wireless/ath/ath6kl/core.h

@@ -107,6 +107,9 @@ enum ath6kl_fw_capability {
 	 */
 	ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
 
+	/* Firmware supports enhanced bmiss detection */
+	ATH6KL_FW_CAPABILITY_BMISS_ENHANCE,
+
 	/* this needs to be last */
 	ATH6KL_FW_CAPABILITY_MAX,
 };

drivers/net/wireless/ath/ath6kl/init.c

@@ -1659,6 +1659,9 @@ void ath6kl_cleanup_vif(struct ath6kl_vif *vif, bool wmi_ready)
 		cfg80211_scan_done(vif->scan_req, true);
 		vif->scan_req = NULL;
 	}
+
+	/* need to clean up enhanced bmiss detection fw state */
+	ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
 }
 
 void ath6kl_stop_txrx(struct ath6kl *ar)

drivers/net/wireless/ath/ath6kl/wmi.c

@@ -2997,6 +2997,25 @@ int ath6kl_wmi_add_del_mcast_filter_cmd(struct wmi *wmi, u8 if_idx,
 	return ret;
 }
 
+int ath6kl_wmi_sta_bmiss_enhance_cmd(struct wmi *wmi, u8 if_idx, bool enhance)
+{
+	struct sk_buff *skb;
+	struct wmi_sta_bmiss_enhance_cmd *cmd;
+	int ret;
+
+	skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
+	if (!skb)
+		return -ENOMEM;
+
+	cmd = (struct wmi_sta_bmiss_enhance_cmd *) skb->data;
+	cmd->enable = enhance ? 1 : 0;
+
+	ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb,
+				  WMI_STA_BMISS_ENHANCE_CMDID,
+				  NO_SYNC_WMIFLAG);
+	return ret;
+}
+
 s32 ath6kl_wmi_get_rate(s8 rate_index)
 {
 	if (rate_index == RATE_AUTO)

drivers/net/wireless/ath/ath6kl/wmi.h

@@ -624,6 +624,10 @@ enum wmi_cmd_id {
 	WMI_SEND_MGMT_CMDID,
 	WMI_BEGIN_SCAN_CMDID,
 
+	WMI_SET_BLACK_LIST,
+	WMI_SET_MCASTRATE,
+
+	WMI_STA_BMISS_ENHANCE_CMDID,
 };
 
 enum wmi_mgmt_frame_type {
@@ -1017,6 +1021,11 @@ struct wmi_bmiss_time_cmd {
 	__le16 num_beacons;
 };
 
+/* WMI_STA_ENHANCE_BMISS_CMDID */
+struct wmi_sta_bmiss_enhance_cmd {
+	u8 enable;
+} __packed;
+
 /* WMI_SET_POWER_MODE_CMDID */
 enum wmi_power_mode {
 	REC_POWER = 0x01,
@@ -2547,6 +2556,8 @@ int ath6kl_wmi_set_roam_mode_cmd(struct wmi *wmi, enum wmi_roam_mode mode);
 int ath6kl_wmi_mcast_filter_cmd(struct wmi *wmi, u8 if_idx, bool mc_all_on);
 int ath6kl_wmi_add_del_mcast_filter_cmd(struct wmi *wmi, u8 if_idx,
 					u8 *filter, bool add_filter);
+int ath6kl_wmi_sta_bmiss_enhance_cmd(struct wmi *wmi, u8 if_idx, bool enable);
+
 /* AP mode uAPSD */
 int ath6kl_wmi_ap_set_apsd(struct wmi *wmi, u8 if_idx, u8 enable);