bridge: add flags to distinguish permanent mdb entires

This patch adds a flag to each mdb entry, so that we can distinguish
permanent entries with temporary entries.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h
index afbb18a0227c..5db297514aec 100644
--- a/include/uapi/linux/if_bridge.h
+++ b/include/uapi/linux/if_bridge.h
@@ -163,6 +163,9 @@ struct br_port_msg {
 
 struct br_mdb_entry {
         __u32 ifindex;
+#define MDB_TEMPORARY 0
+#define MDB_PERMANENT 1
+        __u8 state;
         struct {
                 union {
                         __be32  ip4;