mesh: Add no_auto_peer config option

Add no_auto_peer parameter, which controls wheter a station will
automatically initiate peering to another mesh peer that comes into
range.

Signed-off-by: Javier Lopez <jlopex@gmail.com>
Signed-off-by: Jason Mobarak <x@jason.mobarak.name>
Signed-off-by: Thomas Pedersen <thomas@noack.us>

wpa_supplicant/config.c

@@ -1732,6 +1732,7 @@ static const struct parse_data ssid_fields[] = {
 #endif /* IEEE8021X_EAPOL */
 #ifdef CONFIG_MESH
 	{ INT_RANGE(mode, 0, 5) },
+	{ INT_RANGE(no_auto_peer, 0, 1) },
 #else /* CONFIG_MESH */
 	{ INT_RANGE(mode, 0, 4) },
 #endif /* CONFIG_MESH */

wpa_supplicant/config_ssid.h

@@ -669,6 +669,14 @@ struct wpa_ssid {
 	 * followed).
 	 */
 	int mac_addr;
+
+	/**
+	 * no_auto_peer - Do not automatically peer with compatible mesh peers
+	 *
+	 * When unset, the reception of a beacon from a another mesh peer in
+	 * this MBSS will trigger a peering attempt.
+	 */
+	int no_auto_peer;
 };
 
 #endif /* CONFIG_SSID_H */

wpa_supplicant/ctrl_iface.c

@@ -2610,6 +2610,8 @@ static int wpa_supplicant_ctrl_iface_update_network(
 		wpa_config_update_psk(ssid);
 	else if (os_strcmp(name, "priority") == 0)
 		wpa_config_update_prio_list(wpa_s->conf);
+	else if (os_strcmp(name, "no_auto_peer") == 0)
+		ssid->no_auto_peer = atoi(value);
 
 	return 0;
 }

wpa_supplicant/mesh_mpm.c

@@ -490,6 +490,7 @@ void wpa_mesh_new_mesh_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
 	struct mesh_conf *conf = wpa_s->ifmsh->mconf;
 	struct hostapd_data *data = wpa_s->ifmsh->bss[0];
 	struct sta_info *sta;
+	struct wpa_ssid *ssid = wpa_s->current_ssid;
 	int ret = 0;
 
 	sta = ap_get_sta(data, addr);
@@ -532,6 +533,12 @@ void wpa_mesh_new_mesh_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
 		return;
 	}
 
+	if (ssid && ssid->no_auto_peer) {
+		wpa_msg(wpa_s, MSG_INFO, "will not initiate new peer link with "
+			MACSTR " because of no_auto_peer", MAC2STR(addr));
+		return;
+	}
+
 	mesh_mpm_plink_open(wpa_s, sta, PLINK_OPEN_SENT);
 }