netdev - [PATCH net] vxlan: fix last fdb index during dump of fdb with nhid

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Message-Id: <1593032556-40360-1-git-send-email-roopa@cumulusnetworks.com>
Date:   Wed, 24 Jun 2020 14:02:36 -0700
From:   Roopa Prabhu <roopa@...ulusnetworks.com>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     netdev@...r.kernel.org, nikolay@...ulusnetworks.com,
        julien@...ulusnetworks.com
Subject: [PATCH net] vxlan: fix last fdb index during dump of fdb with nhid 

From: Roopa Prabhu <roopa@...ulusnetworks.com>

This patch fixes last saved fdb index in fdb dump handler when
handling fdb's with nhid.

Fixes: 1274e1cc4226 ("vxlan: ecmp support for mac fdb entries")
Signed-off-by: Roopa Prabhu <roopa@...ulusnetworks.com>
---
 drivers/net/vxlan.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index e8085ab..89d85dc 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1380,6 +1380,8 @@ static int vxlan_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
 			struct vxlan_rdst *rd;
 
 			if (rcu_access_pointer(f->nh)) {
+				if (*idx < cb->args[2])
+					goto skip_nh;
 				err = vxlan_fdb_info(skb, vxlan, f,
 						     NETLINK_CB(cb->skb).portid,
 						     cb->nlh->nlmsg_seq,
@@ -1387,6 +1389,8 @@ static int vxlan_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
 						     NLM_F_MULTI, NULL);
 				if (err < 0)
 					goto out;
+skip_nh:
+				*idx += 1;
 				continue;
 			}
 
-- 
2.1.4