netifd: Add sendredirects config support

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

diff --git a/system-linux.c b/system-linux.c
index 52a1c1774a834219ed95bbb01bd32c760ae4c17a..2f15bf1dbab92411087884a80c7b544948cf8a39 100644 (file)
--- a/system-linux.c
+++ b/system-linux.c
@@ -397,6 +397,11 @@ static void system_bridge_set_unicast_flood(struct device *dev, const char *val)
        system_set_dev_sysctl("/sys/class/net/%s/brport/unicast_flood", dev->ifname, val);
 }
 
+static void system_set_sendredirects(struct device *dev, const char *val)
+{
+       system_set_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects", dev->ifname, val);
+}
+
 static int system_get_sysctl(const char *path, char *buf, const size_t buf_sz)
 {
        int fd = -1, ret = -1;
@@ -485,6 +490,12 @@ static int system_get_dadtransmits(struct device *dev, char *buf, const size_t b
                        dev->ifname, buf, buf_sz);
 }
 
+static int system_get_sendredirects(struct device *dev, char *buf, const size_t buf_sz)
+{
+       return system_get_dev_sysctl("/proc/sys/net/ipv4/conf/%s/send_redirects",
+                       dev->ifname, buf, buf_sz);
+}
+
 // Evaluate netlink messages
 static int cb_rtnl_event(struct nl_msg *msg, void *arg)
 {
@@ -1288,6 +1299,11 @@ system_if_get_settings(struct device *dev, struct device_settings *s)
                s->dadtransmits = strtoul(buf, NULL, 0);
                s->flags |= DEV_OPT_DADTRANSMITS;
        }
+
+       if (!system_get_sendredirects(dev, buf, sizeof(buf))) {
+               s->sendredirects = strtoul(buf, NULL, 0);
+               s->flags |= DEV_OPT_SENDREDIRECTS;
+       }
 }
 
 static void
@@ -1393,6 +1409,8 @@ system_if_apply_settings(struct device *dev, struct device_settings *s, unsigned
                                    !s->multicast ? IFF_MULTICAST : 0) < 0)
                        s->flags &= ~DEV_OPT_MULTICAST;
        }
+       if (s->flags & DEV_OPT_SENDREDIRECTS & apply_mask)
+               system_set_sendredirects(dev, s->sendredirects ? "1" : "0");
 
        system_if_apply_rps_xps(dev, s);
 }