linux-kernel - [PATCH 5.6 020/118] neigh: send protocol value in neighbor create notification

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Date:   Wed, 13 May 2020 11:43:59 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, David Ahern <dsahern@...il.com>,
        Roman Mashak <mrv@...atatu.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 5.6 020/118] neigh: send protocol value in neighbor create notification

From: Roman Mashak <mrv@...atatu.com>

[ Upstream commit 38212bb31fe923d0a2c6299bd2adfbb84cddef2a ]

When a new neighbor entry has been added, event is generated but it does not
include protocol, because its value is assigned after the event notification
routine has run, so move protocol assignment code earlier.

Fixes: df9b0e30d44c ("neighbor: Add protocol attribute")
Cc: David Ahern <dsahern@...il.com>
Signed-off-by: Roman Mashak <mrv@...atatu.com>
Reviewed-by: David Ahern <dsahern@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/core/neighbour.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1954,6 +1954,9 @@ static int neigh_add(struct sk_buff *skb
 				   NEIGH_UPDATE_F_OVERRIDE_ISROUTER);
 	}
 
+	if (protocol)
+		neigh->protocol = protocol;
+
 	if (ndm->ndm_flags & NTF_EXT_LEARNED)
 		flags |= NEIGH_UPDATE_F_EXT_LEARNED;
 
@@ -1967,9 +1970,6 @@ static int neigh_add(struct sk_buff *skb
 		err = __neigh_update(neigh, lladdr, ndm->ndm_state, flags,
 				     NETLINK_CB(skb).portid, extack);
 
-	if (protocol)
-		neigh->protocol = protocol;
-
 	neigh_release(neigh);
 
 out: