nl80211: Store frequency in bss struct

Storing the frequency in the bss struct allows using it for frame
commands in AP mode and not relying on the driver struct as much, which
is good for hostapd mode.

Signed-hostap: Johannes Berg <johannes.berg@intel.com>

src/drivers/driver_nl80211.c

@@ -192,6 +192,8 @@ struct i802_bss {
 	unsigned int added_if_into_bridge:1;
 	unsigned int added_bridge:1;
 
+	int freq;
+
 	struct nl80211_handles nl_preq;
 };
 
@@ -239,7 +241,6 @@ struct wpa_driver_nl80211_data {
 	u64 send_action_cookie;
 
 	unsigned int last_mgmt_freq;
-	unsigned int ap_oper_freq;
 
 	struct wpa_driver_scan_filter *filter_ssids;
 	size_t num_filter_ssids;
@@ -4373,9 +4374,9 @@ static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
 	}
 
 	if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
-		return nl80211_send_frame_cmd(bss, drv->ap_oper_freq, 0,
-					      data, data_len, NULL, 0, noack,
-					      0);
+		return nl80211_send_frame_cmd(bss, bss->freq, 0,
+					      data, data_len, NULL,
+					      0, noack, 0);
 	}
 
 	if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
@@ -4582,10 +4583,11 @@ static int wpa_driver_nl80211_set_ap(void *priv,
 }
 
 
-static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
+static int wpa_driver_nl80211_set_freq(struct i802_bss *bss,
 				       int freq, int ht_enabled,
 				       int sec_channel_offset)
 {
+	struct wpa_driver_nl80211_data *drv = bss->drv;
 	struct nl_msg *msg;
 	int ret;
 
@@ -4618,8 +4620,10 @@ static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
 	}
 
 	ret = send_and_recv_msgs(drv, msg, NULL, NULL);
-	if (ret == 0)
+	if (ret == 0) {
+		bss->freq = freq;
 		return 0;
+	}
 	wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
 		   "%d (%s)", freq, ret, strerror(-ret));
 nla_put_failure:
@@ -5465,13 +5469,11 @@ static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
 		nlmode = NL80211_IFTYPE_AP;
 
 	if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) ||
-	    wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
+	    wpa_driver_nl80211_set_freq(&drv->first_bss, params->freq, 0, 0)) {
 		nl80211_remove_monitor_interface(drv);
 		return -1;
 	}
 
-	drv->ap_oper_freq = params->freq;
-
 	return 0;
 }
 
@@ -6106,8 +6108,7 @@ static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
 {
 	struct i802_bss *bss = priv;
-	struct wpa_driver_nl80211_data *drv = bss->drv;
-	return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
+	return wpa_driver_nl80211_set_freq(bss, freq->freq, freq->ht_enabled,
 					   freq->sec_channel_offset);
 }