P2P: Update listen and operating channel from P2P D-Bus

Some P2PDevice properties were not updated in p2p->cfg structure:
reg_class, channel, op_reg_class, and op_channel. Hence, update p2p->cfg
parameters through p2p core calls in wpas_p2p_update_config().

Signed-off-by: Jean-Michel.Bachot <jean-michelx.bachot@intel.com>
Signed-off-by: Jayant Sane <jayant.sane@intel.com>

src/p2p/p2p.c

@@ -3428,6 +3428,22 @@ int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
 }
 
 
+int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
+			 int cfg_op_channel)
+{
+	if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel)
+	    < 0)
+		return -1;
+
+	wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: "
+		"reg_class %u channel %u", op_reg_class, op_channel);
+	p2p->cfg->op_reg_class = op_reg_class;
+	p2p->cfg->op_channel = op_channel;
+	p2p->cfg->cfg_op_channel = cfg_op_channel;
+	return 0;
+}
+
+
 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
 			   u8 *iface_addr)
 {

src/p2p/p2p.h

@@ -1496,4 +1496,15 @@ void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p);
 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
 				 const struct wpabuf *vendor_ext);
 
+/**
+ * p2p_set_oper_channel - Set the P2P operating channel
+ * @p2p: P2P module context from p2p_init()
+ * @op_reg_class: Operating regulatory class to set
+ * @op_channel: operating channel to set
+ * @cfg_op_channel : Whether op_channel is hardcoded in configuration
+ * Returns: 0 on success, -1 on failure
+ */
+int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
+			 int cfg_op_channel);
+
 #endif /* P2P_H */

wpa_supplicant/config.h

@@ -44,6 +44,8 @@
 #define CFG_CHANGED_WPS_STRING BIT(8)
 #define CFG_CHANGED_P2P_INTRA_BSS BIT(9)
 #define CFG_CHANGED_VENDOR_EXTENSION BIT(10)
+#define CFG_CHANGED_P2P_LISTEN_CHANNEL BIT(11)
+#define CFG_CHANGED_P2P_OPER_CHANNEL BIT(12)
 
 /**
  * struct wpa_config - wpa_supplicant configuration data

wpa_supplicant/dbus/dbus_new_handlers_p2p.c

@@ -876,22 +876,26 @@ DBusMessage *wpas_dbus_setter_p2p_device_properties(DBusMessage * message,
 			wpa_s->conf->persistent_reconnect = entry.bool_value;
 
 		else if ((os_strcmp(entry.key, "ListenRegClass") == 0) &&
-			 (entry.type == DBUS_TYPE_UINT32))
+			 (entry.type == DBUS_TYPE_UINT32)) {
 			wpa_s->conf->p2p_listen_reg_class = entry.uint32_value;
-
+			wpa_s->conf->changed_parameters |=
-		else if ((os_strcmp(entry.key, "ListenChannel") == 0) &&
+				CFG_CHANGED_P2P_LISTEN_CHANNEL;
-			 (entry.type == DBUS_TYPE_UINT32))
+		} else if ((os_strcmp(entry.key, "ListenChannel") == 0) &&
+			   (entry.type == DBUS_TYPE_UINT32)) {
 			wpa_s->conf->p2p_listen_channel = entry.uint32_value;
-
+			wpa_s->conf->changed_parameters |=
-		else if ((os_strcmp(entry.key, "OperRegClass") == 0) &&
+				CFG_CHANGED_P2P_LISTEN_CHANNEL;
-			 (entry.type == DBUS_TYPE_UINT32))
+		} else if ((os_strcmp(entry.key, "OperRegClass") == 0) &&
+			   (entry.type == DBUS_TYPE_UINT32)) {
 			wpa_s->conf->p2p_oper_reg_class = entry.uint32_value;
-
+			wpa_s->conf->changed_parameters |=
-		else if ((os_strcmp(entry.key, "OperChannel") == 0) &&
+				CFG_CHANGED_P2P_OPER_CHANNEL;
-			 (entry.type == DBUS_TYPE_UINT32))
+		} else if ((os_strcmp(entry.key, "OperChannel") == 0) &&
+			   (entry.type == DBUS_TYPE_UINT32)) {
 			wpa_s->conf->p2p_oper_channel = entry.uint32_value;
-
+			wpa_s->conf->changed_parameters |=
-		else if (os_strcmp(entry.key, "SsidPostfix") == 0) {
+				CFG_CHANGED_P2P_OPER_CHANNEL;
+		} else if (os_strcmp(entry.key, "SsidPostfix") == 0) {
 			char *postfix;
 
 			if (entry.type != DBUS_TYPE_STRING)

wpa_supplicant/p2p_supplicant.c

@@ -4011,6 +4011,54 @@ void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
 
 	if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
 		p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
+
+	if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
+		u8 reg_class, channel;
+		int ret;
+		unsigned int r;
+		if (wpa_s->conf->p2p_listen_reg_class &&
+		    wpa_s->conf->p2p_listen_channel) {
+			reg_class = wpa_s->conf->p2p_listen_reg_class;
+			channel = wpa_s->conf->p2p_listen_channel;
+		} else {
+			reg_class = 81;
+			/*
+			 * Pick one of the social channels randomly as the
+			 * listen channel.
+			 */
+			os_get_random((u8 *) &r, sizeof(r));
+			channel = 1 + (r % 3) * 5;
+		}
+		ret = p2p_set_listen_channel(p2p, reg_class, channel);
+		if (ret)
+			wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
+				   "failed: %d", ret);
+	}
+	if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
+		u8 op_reg_class, op_channel, cfg_op_channel;
+		int ret = 0;
+		unsigned int r;
+		if (wpa_s->conf->p2p_oper_reg_class &&
+		    wpa_s->conf->p2p_oper_channel) {
+			op_reg_class = wpa_s->conf->p2p_oper_reg_class;
+			op_channel = wpa_s->conf->p2p_oper_channel;
+			cfg_op_channel = 1;
+		} else {
+			op_reg_class = 81;
+			/*
+			 * Use random operation channel from (1, 6, 11)
+			 *if no other preference is indicated.
+			 */
+			os_get_random((u8 *) &r, sizeof(r));
+			op_channel = 1 + (r % 3) * 5;
+			cfg_op_channel = 0;
+		}
+		ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
+					   cfg_op_channel);
+		if (ret)
+			wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
+				   "failed: %d", ret);
+	}
 }