net: switchdev: support static FDB addresses

This patch adds a is_static boolean to the switchdev_obj_fdb structure,
in order to set the ndm_state to either NUD_NOARP or NUD_REACHABLE.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 2 insertions, 1 deletions

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index e90e1a0fa579..0e296b82aef3 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -72,6 +72,7 @@ struct switchdev_obj {
                 struct switchdev_obj_fdb {              /* PORT_FDB */
                         u8 addr[ETH_ALEN];
                         u16 vid;
+                        bool is_static;
                 } fdb;
         } u;
 };
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 9db87a34f866..e9d1cacc4060 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -811,7 +811,7 @@ static int switchdev_port_fdb_dump_cb(struct net_device *dev,
         ndm->ndm_flags   = NTF_SELF;
         ndm->ndm_type    = 0;
         ndm->ndm_ifindex = dev->ifindex;
-        ndm->ndm_state   = NUD_REACHABLE;
+        ndm->ndm_state   = obj->u.fdb.is_static ? NUD_NOARP : NUD_REACHABLE;
 
         if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, obj->u.fdb.addr))
                 goto nla_put_failure;