net: generic fdb support for drivers without ndo_fdb_<op>

If the driver does not support the ndo_op use the generic
handler for it. This should work in the majority of cases.
Eventually the fdb_dflt_add call gets translated into a
__dev_set_rx_mode() call which should handle hardware
support for filtering via the IFF_UNICAST_FLT flag.

Namely IFF_UNICAST_FLT indicates if the hardware can do
unicast address filtering. If no support is available
the device is put into promisc mode.

Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index 489dd7bb28ec..f28544b2f9af 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -69,6 +69,15 @@ extern int ndo_dflt_fdb_dump(struct sk_buff *skb,
                              struct netlink_callback *cb,
                              struct net_device *dev,
                              int idx);
+extern int ndo_dflt_fdb_add(struct ndmsg *ndm,
+                            struct nlattr *tb[],
+                            struct net_device *dev,
+                            const unsigned char *addr,
+                             u16 flags);
+extern int ndo_dflt_fdb_del(struct ndmsg *ndm,
+                            struct nlattr *tb[],
+                            struct net_device *dev,
+                            const unsigned char *addr);
 
 extern int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
                                    struct net_device *dev, u16 mode);