rtnetlink: fix FDB size computation

[ Upstream commit f82ef3e10a870acc19fa04f80ef5877eaa26f41e ]

Add missing NDA_VLAN attribute's size.

Fixes: 1e53d5bb8878 ("net: Pass VLAN ID to rtnl_fdb_notify.")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 189cc78c77eba22b0023cc9598e719a308c77547..9b39088e9077c4d6da8b0f1d0193bafdbdc265e2 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2791,7 +2791,10 @@ nla_put_failure:
 
 static inline size_t rtnl_fdb_nlmsg_size(void)
 {
-       return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN);
+       return NLMSG_ALIGN(sizeof(struct ndmsg)) +
+              nla_total_size(ETH_ALEN) +       /* NDA_LLADDR */
+              nla_total_size(sizeof(u16)) +    /* NDA_VLAN */
+              0;
 }
 
 static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type,