driver: Make DFS domain information available to core

Current DFS domain information of the driver can be used in ap/dfs
to comply with DFS domain specific requirements like uniform spreading
for ETSI domain.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com>

src/ap/ap_drv_ops.c

@@ -596,13 +596,13 @@ int hostapd_set_tx_queue_params(struct hostapd_data *hapd, int queue, int aifs,
 
 struct hostapd_hw_modes *
 hostapd_get_hw_feature_data(struct hostapd_data *hapd, u16 *num_modes,
-			    u16 *flags)
+			    u16 *flags, u8 *dfs_domain)
 {
 	if (hapd->driver == NULL ||
 	    hapd->driver->get_hw_feature_data == NULL)
 		return NULL;
 	return hapd->driver->get_hw_feature_data(hapd->drv_priv, num_modes,
-						 flags);
+						 flags, dfs_domain);
 }
 
 

src/ap/ap_drv_ops.h

@@ -72,7 +72,7 @@ int hostapd_set_tx_queue_params(struct hostapd_data *hapd, int queue, int aifs,
 				int cw_min, int cw_max, int burst_time);
 struct hostapd_hw_modes *
 hostapd_get_hw_feature_data(struct hostapd_data *hapd, u16 *num_modes,
-			    u16 *flags);
+			    u16 *flags, u8 *dfs_domain);
 int hostapd_driver_commit(struct hostapd_data *hapd);
 int hostapd_drv_none(struct hostapd_data *hapd);
 int hostapd_driver_scan(struct hostapd_data *hapd,

src/ap/hw_features.c

@@ -78,10 +78,12 @@ int hostapd_get_hw_features(struct hostapd_iface *iface)
 	int i, j;
 	u16 num_modes, flags;
 	struct hostapd_hw_modes *modes;
+	u8 dfs_domain;
 
 	if (hostapd_drv_none(hapd))
 		return -1;
-	modes = hostapd_get_hw_feature_data(hapd, &num_modes, &flags);
+	modes = hostapd_get_hw_feature_data(hapd, &num_modes, &flags,
+					    &dfs_domain);
 	if (modes == NULL) {
 		hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
 			       HOSTAPD_LEVEL_DEBUG,

src/drivers/driver.h

@@ -65,6 +65,10 @@
 /* Filter unicast IP packets encrypted using the GTK */
 #define WPA_DATA_FRAME_FILTER_FLAG_GTK BIT(2)
 
+#define HOSTAPD_DFS_REGION_FCC	1
+#define HOSTAPD_DFS_REGION_ETSI	2
+#define HOSTAPD_DFS_REGION_JP	3
+
 /**
  * enum reg_change_initiator - Regulatory change initiator
  */
@@ -2368,12 +2372,13 @@ struct wpa_driver_ops {
 	 * @priv: Private driver interface data
 	 * @num_modes: Variable for returning the number of returned modes
 	 * flags: Variable for returning hardware feature flags
+	 * @dfs: Variable for returning DFS region (HOSTAPD_DFS_REGION_*)
 	 * Returns: Pointer to allocated hardware data on success or %NULL on
 	 * failure. Caller is responsible for freeing this.
 	 */
 	struct hostapd_hw_modes * (*get_hw_feature_data)(void *priv,
 							 u16 *num_modes,
-							 u16 *flags);
+							 u16 *flags, u8 *dfs);
 
 	/**
 	 * send_mlme - Send management frame from MLME

src/drivers/driver_hostap.c

@@ -1088,7 +1088,7 @@ static int hostap_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 
 static struct hostapd_hw_modes * hostap_get_hw_feature_data(void *priv,
 							    u16 *num_modes,
-							    u16 *flags)
+							    u16 *flags, u8 *dfs)
 {
 	struct hostapd_hw_modes *mode;
 	int i, clen, rlen;
@@ -1103,6 +1103,7 @@ static struct hostapd_hw_modes * hostap_get_hw_feature_data(void *priv,
 
 	*num_modes = 1;
 	*flags = 0;
+	*dfs = 0;
 
 	mode->mode = HOSTAPD_MODE_IEEE80211B;
 	mode->num_channels = 14;

src/drivers/driver_nl80211.h

@@ -260,7 +260,8 @@ int nl80211_send_monitor(struct wpa_driver_nl80211_data *drv,
 
 int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv);
 struct hostapd_hw_modes *
-nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags);
+nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags,
+			    u8 *dfs_domain);
 
 int process_global_event(struct nl_msg *msg, void *arg);
 int process_bss_event(struct nl_msg *msg, void *arg);

src/drivers/driver_nl80211_capa.c

@@ -1209,6 +1209,7 @@ struct phy_info_arg {
 	struct hostapd_hw_modes *modes;
 	int last_mode, last_chan_idx;
 	int failed;
+	u8 dfs_domain;
 };
 
 static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
@@ -1737,6 +1738,20 @@ static void nl80211_reg_rule_vht(struct nlattr *tb[],
 }
 
 
+static void nl80211_set_dfs_domain(enum nl80211_dfs_regions region,
+				   u8 *dfs_domain)
+{
+	if (region == NL80211_DFS_FCC)
+		*dfs_domain = HOSTAPD_DFS_REGION_FCC;
+	else if (region == NL80211_DFS_ETSI)
+		*dfs_domain = HOSTAPD_DFS_REGION_ETSI;
+	else if (region == NL80211_DFS_JP)
+		*dfs_domain = HOSTAPD_DFS_REGION_JP;
+	else
+		*dfs_domain = 0;
+}
+
+
 static const char * dfs_domain_name(enum nl80211_dfs_regions region)
 {
 	switch (region) {
@@ -1783,6 +1798,7 @@ static int nl80211_get_reg(struct nl_msg *msg, void *arg)
 	if (tb_msg[NL80211_ATTR_DFS_REGION]) {
 		enum nl80211_dfs_regions dfs_domain;
 		dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]);
+		nl80211_set_dfs_domain(dfs_domain, &results->dfs_domain);
 		wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)",
 			   (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]),
 			   dfs_domain_name(dfs_domain));
@@ -1859,7 +1875,8 @@ static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv,
 
 
 struct hostapd_hw_modes *
-nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
+nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags,
+			    u8 *dfs_domain)
 {
 	u32 feat;
 	struct i802_bss *bss = priv;
@@ -1871,10 +1888,12 @@ nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
 		.modes = NULL,
 		.last_mode = -1,
 		.failed = 0,
+		.dfs_domain = 0,
 	};
 
 	*num_modes = 0;
 	*flags = 0;
+	*dfs_domain = 0;
 
 	feat = get_nl80211_protocol_features(drv);
 	if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
@@ -1898,6 +1917,9 @@ nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
 			*num_modes = 0;
 			return NULL;
 		}
+
+		*dfs_domain = result.dfs_domain;
+
 		return wpa_driver_nl80211_postprocess_modes(result.modes,
 							    num_modes);
 	}

wpa_supplicant/driver_i.h

@@ -275,11 +275,12 @@ static inline int wpa_drv_mlme_setprotection(struct wpa_supplicant *wpa_s,
 
 static inline struct hostapd_hw_modes *
 wpa_drv_get_hw_feature_data(struct wpa_supplicant *wpa_s, u16 *num_modes,
-			    u16 *flags)
+			    u16 *flags, u8 *dfs_domain)
 {
 	if (wpa_s->driver->get_hw_feature_data)
 		return wpa_s->driver->get_hw_feature_data(wpa_s->drv_priv,
-							  num_modes, flags);
+							  num_modes, flags,
+							  dfs_domain);
 	return NULL;
 }
 

wpa_supplicant/events.c

@@ -3428,6 +3428,7 @@ static void wpa_supplicant_update_channel_list(
 	struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
 {
 	struct wpa_supplicant *ifs;
+	u8 dfs_domain;
 
 	/*
 	 * To allow backwards compatibility with higher level layers that
@@ -3452,7 +3453,7 @@ static void wpa_supplicant_update_channel_list(
 			   ifs->ifname);
 		free_hw_features(ifs);
 		ifs->hw.modes = wpa_drv_get_hw_feature_data(
-			ifs, &ifs->hw.num_modes, &ifs->hw.flags);
+			ifs, &ifs->hw.num_modes, &ifs->hw.flags, &dfs_domain);
 
 		/* Restart PNO/sched_scan with updated channel list */
 		if (ifs->pno) {

wpa_supplicant/wpa_supplicant.c

@@ -4939,6 +4939,7 @@ static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
 {
 	struct wpa_driver_capa capa;
 	int capa_res;
+	u8 dfs_domain;
 
 	wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
 		   "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
@@ -5066,7 +5067,8 @@ static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
 
 	wpa_s->hw.modes = wpa_drv_get_hw_feature_data(wpa_s,
 						      &wpa_s->hw.num_modes,
-						      &wpa_s->hw.flags);
+						      &wpa_s->hw.flags,
+						      &dfs_domain);
 	if (wpa_s->hw.modes) {
 		u16 i;