vxlan: allow a user to set TTL value

"ip link add ... type vxlan ... ttl X" allows a user to set the TTL
used by a VXLAN for encapsulation. The provided value was ignored by
vxlan module and the default value of 1 was used when encapsulating
multicast packets.

Signed-off-by: Vincent Bernat <[email protected]>
Acked-by: Stephen Hemminger <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 607976c001626a75afbf590411bf6ec1bbff26c0..030559dbeb3c21d439abca6d25c01f812e5115f2 100644 (file)
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1107,6 +1107,9 @@ static int vxlan_newlink(struct net *net, struct net_device *dev,
        if (data[IFLA_VXLAN_TOS])
                vxlan->tos  = nla_get_u8(data[IFLA_VXLAN_TOS]);
 
+       if (data[IFLA_VXLAN_TTL])
+               vxlan->ttl = nla_get_u8(data[IFLA_VXLAN_TTL]);
+
        if (!data[IFLA_VXLAN_LEARNING] || nla_get_u8(data[IFLA_VXLAN_LEARNING]))
                vxlan->learn = true;