summaryrefslogtreecommitdiff
path: root/net
diff options
context:
space:
mode:
authorMark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>2016-02-15 16:24:44 +1300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-03-03 15:07:07 -0800
commite9f13d3fa0781ae13051fa644f715d3556244ac7 (patch)
treed4280f16f56105ee83c21149b71c923ec498aee8 /net
parent1cabc3e35f4b2855c46e4e94fc3b93dd9a307327 (diff)
l2tp: Fix error creating L2TP tunnels
[ Upstream commit 853effc55b0f975abd6d318cca486a9c1b67e10f ] A previous commit (33f72e6) added notification via netlink for tunnels when created/modified/deleted. If the notification returned an error, this error was returned from the tunnel function. If there were no listeners, the error code ESRCH was returned, even though having no listeners is not an error. Other calls to this and other similar notification functions either ignore the error code, or filter ESRCH. This patch checks for ESRCH and does not flag this as an error. Reviewed-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz> Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
-rw-r--r--net/l2tp/l2tp_netlink.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
index f93c5be612a7..2caaa84ce92d 100644
--- a/net/l2tp/l2tp_netlink.c
+++ b/net/l2tp/l2tp_netlink.c
@@ -124,8 +124,13 @@ static int l2tp_tunnel_notify(struct genl_family *family,
ret = l2tp_nl_tunnel_send(msg, info->snd_portid, info->snd_seq,
NLM_F_ACK, tunnel, cmd);
- if (ret >= 0)
- return genlmsg_multicast_allns(family, msg, 0, 0, GFP_ATOMIC);
+ if (ret >= 0) {
+ ret = genlmsg_multicast_allns(family, msg, 0, 0, GFP_ATOMIC);
+ /* We don't care if no one is listening */
+ if (ret == -ESRCH)
+ ret = 0;
+ return ret;
+ }
nlmsg_free(msg);
@@ -147,8 +152,13 @@ static int l2tp_session_notify(struct genl_family *family,
ret = l2tp_nl_session_send(msg, info->snd_portid, info->snd_seq,
NLM_F_ACK, session, cmd);
- if (ret >= 0)
- return genlmsg_multicast_allns(family, msg, 0, 0, GFP_ATOMIC);
+ if (ret >= 0) {
+ ret = genlmsg_multicast_allns(family, msg, 0, 0, GFP_ATOMIC);
+ /* We don't care if no one is listening */
+ if (ret == -ESRCH)
+ ret = 0;
+ return ret;
+ }
nlmsg_free(msg);