switchdev: fdb filter_dev is always NULL for self (device), so remove check

Remove the filter_dev check when dumping fdb entries, otherwise dump
returns empty list.  filter_dev is always passed as NULL when dumping fdbs
on SELF.  We want the fdbs installed on the device to be listed in the
dump.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Fixes: 45d4122c ("switchdev: add support for fdb add/del/dump via switchdev_port_obj ops")
Acked-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/switchdev/switchdev.c

@@ -656,7 +656,6 @@ struct switchdev_fdb_dump {
 	struct switchdev_obj obj;
 	struct sk_buff *skb;
 	struct netlink_callback *cb;
-	struct net_device *filter_dev;
 	int idx;
 };
 
@@ -669,14 +668,10 @@ static int switchdev_port_fdb_dump_cb(struct net_device *dev,
 	u32 seq = dump->cb->nlh->nlmsg_seq;
 	struct nlmsghdr *nlh;
 	struct ndmsg *ndm;
-	struct net_device *master = netdev_master_upper_dev_get(dev);
 
 	if (dump->idx < dump->cb->args[0])
 		goto skip;
 
-	if (master && dump->filter_dev != master)
-		goto skip;
-
 	nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
 			sizeof(*ndm), NLM_F_MULTI);
 	if (!nlh)
@@ -730,7 +725,6 @@ int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
 		},
 		.skb = skb,
 		.cb = cb,
-		.filter_dev = filter_dev,
 		.idx = idx,
 	};
 	int err;