bridge: enable multicast_to_unicast on all wireless bridge ports

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

3 files changed, 22 insertions, 3 deletions

diff --git a/device.h b/device.h
index 58dcb18..01a68bc 100644
--- a/device.h
+++ b/device.h
@@ -138,6 +138,7 @@ struct device {
 
 	bool current_config;
 	bool default_config;
+	bool wireless;
 
 	/* set interface up or down */
 	device_state_cb set_state;
diff --git a/system-linux.c b/system-linux.c
index c6f17e9..5c960b4 100644
--- a/system-linux.c
+++ b/system-linux.c
@@ -452,15 +452,27 @@ static char *system_get_bridge(const char *name, char *buf, int buflen)
 	return path + 1;
 }
 
+static void system_bridge_set_wireless(const char *bridge, const char *dev)
+{
+	snprintf(dev_buf, sizeof(dev_buf),
+		 "/sys/devices/virtual/net/%s/brif/%s/multicast_to_unicast",
+		 bridge, dev);
+	system_set_sysctl(dev_buf, "1");
+}
+
 int system_bridge_addif(struct device *bridge, struct device *dev)
 {
 	char *oldbr;
+	int ret = 0;
 
 	oldbr = system_get_bridge(dev->ifname, dev_buf, sizeof(dev_buf));
-	if (oldbr && !strcmp(oldbr, bridge->ifname))
-		return 0;
+	if (!oldbr || strcmp(oldbr, bridge->ifname) != 0)
+		ret = system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
+
+	if (dev->wireless)
+		system_bridge_set_wireless(bridge->ifname, dev->ifname);
 
-	return system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
+	return ret;
 }
 
 int system_bridge_delif(struct device *bridge, struct device *dev)
diff --git a/wireless.c b/wireless.c
index 0e293a0..c0f3b71 100644
--- a/wireless.c
+++ b/wireless.c
@@ -202,6 +202,12 @@ static void wireless_interface_handle_link(struct wireless_interface *vif, bool
 	if (!vif->network || !vif->ifname)
 		return;
 
+	if (up) {
+		struct device *dev = device_get(vif->ifname, 2);
+		if (dev)
+			dev->wireless = true;
+	}
+
 	blobmsg_for_each_attr(cur, vif->network, rem) {
 		network = blobmsg_data(cur);