rocker: remove swdev mode

Remove use of 'swdev' mode in rocker. rocker dev offloads
can use the BRIDGE_FLAGS_SELF to indicate offload to hardware.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index a9be2c1..eaa057f 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2751,11 +2751,17 @@
 	if (!br_afspec)
 		goto nla_put_failure;
 
-	if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF) ||
-	    nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) {
+	if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF)) {
 		nla_nest_cancel(skb, br_afspec);
 		goto nla_put_failure;
 	}
+
+	if (mode != BRIDGE_MODE_UNDEF) {
+		if (nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) {
+			nla_nest_cancel(skb, br_afspec);
+			goto nla_put_failure;
+		}
+	}
 	nla_nest_end(skb, br_afspec);
 
 	protinfo = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);