Subject: [PATCH 21/43] net: switchdev: fix return code of fdb_dump stub

From: Dragos Tatulea <[email-masked]>
Date: Mon, 16 Nov 2015 10:52:48 +0100

[ Upstream commit 24cb7055a3066634a0f3fa0cd6a4780652905d35 ]

rtnl_fdb_dump always expects an index to be returned by the ndo_fdb_dump op,
but when CONFIG_NET_SWITCHDEV is off, it returns an error.

Fix that by returning the given unmodified idx.

A similar fix was 0890cf6cb6ab ("switchdev: fix return value of
switchdev_port_fdb_dump in case of error") but for the CONFIG_NET_SWITCHDEV=y
case.

Fixes: 45d4122ca7cd ("switchdev: add support for fdb add/del/dump via switchdev_port_obj ops.")
Signed-off-by: Dragos Tatulea <[email-masked]>
Acked-by: Jiri Pirko <[email-masked]>
Signed-off-by: David S. Miller <[email-masked]>
---
 include/net/switchdev.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 319baab..731c40e 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -272,7 +272,7 @@ static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
 					  struct net_device *filter_dev,
 					  int idx)
 {
-	return -EOPNOTSUPP;
+       return idx;
 }
 
 static inline void switchdev_port_fwd_mark_set(struct net_device *dev,
-- 
2.1.0