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

From: Ben Hutchings
Date: Wed May 30 2018 - 07:15:27 EST


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

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

From: Hangbin Liu <liuhangbin@xxxxxxxxx>

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@xxxxxxxxxx>
Signed-off-by: Hangbin Liu <liuhangbin@xxxxxxxxx>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
[bwh: Backported to 3.2:
- Use NLA_PUT_U16, consistent with the rest of the function
- Adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
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)