linux-kernel - [PATCH 3.2 033/153] l2tp: fix missing print session offset info

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Date:   Wed, 30 May 2018 11:52:41 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Lorenzo Bianconi" <lorenzo.bianconi@...hat.com>,
        "Jianlin Shi" <jishi@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        "Hangbin Liu" <liuhangbin@...il.com>
Subject: [PATCH 3.2 033/153] l2tp: fix missing print session offset info

3.2.102-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Hangbin Liu <liuhangbin@...il.com>

commit 820da5357572715c6235ba3b3daa2d5b43a1198f upstream.

Report offset parameter in L2TP_CMD_SESSION_GET command if
it has been configured by userspace

Fixes: 309795f4bec ("l2tp: Add netlink control API for L2TP")
Reported-by: Jianlin Shi <jishi@...hat.com>
Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@...hat.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
[bwh: Backported to 3.2:
 - Use NLA_PUT_U16, consistent with the rest of the function
 - Adjust context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 net/l2tp/l2tp_netlink.c | 2 ++
 1 file changed, 2 insertions(+)

--- a/net/l2tp/l2tp_netlink.c
+++ b/net/l2tp/l2tp_netlink.c
@@ -589,6 +589,8 @@ static int l2tp_nl_session_send(struct s
 
 	if (session->ifname && session->ifname[0])
 		NLA_PUT_STRING(skb, L2TP_ATTR_IFNAME, session->ifname);
+	if (session->offset)
+		NLA_PUT_U16(skb, L2TP_ATTR_OFFSET, session->offset);
 	if (session->cookie_len)
 		NLA_PUT(skb, L2TP_ATTR_COOKIE, session->cookie_len, &session->cookie[0]);
 	if (session->peer_cookie_len)