device: Support multicast config option

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

diff --git a/system-linux.c b/system-linux.c
index 909ba0f..86e373c 100644 (file)
--- a/system-linux.c
+++ b/system-linux.c
@@ -1089,6 +1089,9 @@ system_if_get_settings(struct device *dev, struct device_settings *s)
        if (ioctl(sock_ioctl, SIOCGIFFLAGS, &ifr) == 0) {
                s->promisc = ifr.ifr_flags & IFF_PROMISC;
                s->flags |= DEV_OPT_PROMISC;
+
+               s->multicast = ifr.ifr_flags & IFF_MULTICAST;
+               s->flags |= DEV_OPT_MULTICAST;
        }
 
        if (!system_get_rpfilter(dev, buf, sizeof(buf))) {
@@ -1140,6 +1143,8 @@ system_if_set_rps_xps_val(const char *path, int val)
        snprintf(val_buf, sizeof(val_buf), "%x", val);
        for (i = 0; i < gl.gl_pathc; i++)
                system_set_sysctl(gl.gl_pathv[i], val_buf);
+
+       globfree(&gl);
 }
 
 static void
@@ -1217,6 +1222,11 @@ system_if_apply_settings(struct device *dev, struct device_settings *s, unsigned
                snprintf(buf, sizeof(buf), "%d", s->dadtransmits);
                system_set_dadtransmits(dev, buf);
        }
+       if (s->flags & DEV_OPT_MULTICAST & apply_mask) {
+               if (system_if_flags(dev->ifname, s->multicast ? IFF_MULTICAST : 0,
+                                   !s->multicast ? IFF_MULTICAST : 0) < 0)
+                       s->flags &= ~DEV_OPT_MULTICAST;
+       }
 
        system_if_apply_rps_xps(dev, s);
 }