bridge: Allow setting multicast_router option

[project/netifd.git] / system-linux.c

diff --git a/system-linux.c b/system-linux.c
index 9ba13fd..01500a5 100644 (file)
--- a/system-linux.c
+++ b/system-linux.c
@@ -315,6 +315,23 @@ static void system_set_dadtransmits(struct device *dev, const char *val)
        system_set_dev_sysctl("/proc/sys/net/ipv6/conf/%s/dad_transmits", dev->ifname, val);
 }
 
+static void system_bridge_set_multicast_to_unicast(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/class/net/%s/brport/multicast_to_unicast", dev->ifname, val);
+}
+
+static void system_bridge_set_hairpin_mode(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/sys/class/net/%s/brport/hairpin_mode", dev->ifname, val);
+}
+
+static void system_bridge_set_multicast_router(struct device *dev, const char *val, bool bridge)
+{
+       system_set_dev_sysctl(bridge ? "/sys/class/net/%s/bridge/multicast_router" :
+                                      "/sys/class/net/%s/brport/multicast_router",
+                             dev->ifname, val);
+}
+
 static int system_get_sysctl(const char *path, char *buf, const size_t buf_sz)
 {
        int fd = -1, ret = -1;
@@ -556,16 +573,26 @@ 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)
+static void
+system_bridge_set_wireless(struct device *bridge, struct device *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");
+       bool mcast_to_ucast = true;
+       bool hairpin = true;
+
+       if (bridge->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST &&
+           !bridge->settings.multicast_to_unicast)
+               mcast_to_ucast = false;
+
+       if (!mcast_to_ucast || dev->wireless_isolate)
+               hairpin = false;
+
+       system_bridge_set_multicast_to_unicast(dev, mcast_to_ucast ? "1" : "0");
+       system_bridge_set_hairpin_mode(dev, hairpin ? "1" : "0");
 }
 
 int system_bridge_addif(struct device *bridge, struct device *dev)
 {
+       char buf[64];
        char *oldbr;
        int ret = 0;
 
@@ -574,7 +601,12 @@ int system_bridge_addif(struct device *bridge, struct device *dev)
                ret = system_bridge_if(bridge->ifname, dev, SIOCBRADDIF, NULL);
 
        if (dev->wireless)
-               system_bridge_set_wireless(bridge->ifname, dev->ifname);
+               system_bridge_set_wireless(bridge, dev);
+
+       if (dev->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
+               snprintf(buf, sizeof(buf), "%i", dev->settings.multicast_router);
+               system_bridge_set_multicast_router(dev, buf, false);
+       }
 
        return ret;
 }
@@ -826,6 +858,11 @@ int system_bridge_addbr(struct device *bridge, struct bridge_config *cfg)
        system_set_dev_sysctl("/sys/devices/virtual/net/%s/bridge/hash_max",
                bridge->ifname, buf);
 
+       if (bridge->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
+               snprintf(buf, sizeof(buf), "%i", bridge->settings.multicast_router);
+               system_bridge_set_multicast_router(bridge, buf, true);
+       }
+
        args[0] = BRCTL_SET_BRIDGE_PRIORITY;
        args[1] = cfg->priority;
        system_bridge_if(bridge->ifname, NULL, SIOCDEVPRIVATE, &args);