netdev - [PATCH net] net: bridge: fix returning of vlan range op errors

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Message-Id: <1508433452-23812-1-git-send-email-nikolay@cumulusnetworks.com>
Date:   Thu, 19 Oct 2017 20:17:32 +0300
From:   Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
To:     netdev@...r.kernel.org
Cc:     bridge@...ts.linux-foundation.org, roopa@...ulusnetworks.com,
        stephen@...workplumber.org,
        Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
Subject: [PATCH net] net: bridge: fix returning of vlan range op errors

When vlan tunnels were introduced, vlan range errors got silently
dropped and instead 0 was returned always. Restore the previous
behaviour and return errors to user-space.

Fixes: efa5356b0d97 ("bridge: per vlan dst_metadata netlink support")
Signed-off-by: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
---
err should be always set because we have a check for the vid range above
the loop and it must ensure we will go through the loop at least once

 net/bridge/br_netlink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 3bc890716c89..de2152730809 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -573,7 +573,7 @@ static int br_process_vlan_info(struct net_bridge *br,
 		}
 		*vinfo_last = NULL;
 
-		return 0;
+		return err;
 	}
 
 	return br_vlan_info(br, p, cmd, vinfo_curr);
-- 
2.1.4