flush routes after bringing up/down an interface

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

diff --git a/system-linux.c b/system-linux.c
index cf4e9c7..bb834a2 100644 (file)
--- a/system-linux.c
+++ b/system-linux.c
@@ -446,6 +446,25 @@ int system_del_route(struct device *dev, struct device_route *route)
        return system_rt(dev, route, RTM_DELROUTE);
 }
 
+int system_flush_routes(void)
+{
+       const char *names[] = {
+               "/proc/sys/net/ipv4/route/flush",
+               "/proc/sys/net/ipv6/route/flush"
+       };
+       int fd, i;
+
+       for (i = 0; i < ARRAY_SIZE(names); i++) {
+               fd = open(names[i], O_WRONLY);
+               if (fd < 0)
+                       continue;
+
+               write(fd, "-1", 2);
+               close(fd);
+       }
+       return 0;
+}
+
 time_t system_get_rtime(void)
 {
        struct timespec ts;