diff mbox

[net-next,1/2] l2tp: remove useless duplicate session detection in l2tp_netlink

Message ID 12ee163ea829465c5bd916aafd183819ea5b85b7.1491908878.git.g.nault@alphalink.fr
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Guillaume Nault April 11, 2017, 11:12 a.m. UTC 
There's no point in checking for duplicate sessions at the beginning of
l2tp_nl_cmd_session_create(); the ->session_create() callbacks already
return -EEXIST when the session already exists.

Furthermore, even if l2tp_session_find() returns NULL, a new session
might be created right after the test. So relying on ->session_create()
to avoid duplicate session is the only sane behaviour.

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
---
 net/l2tp/l2tp_netlink.c | 5 -----
 1 file changed, 5 deletions(-)
diff mbox

Patch

diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
index 7e3e669baac4..12cfcd0ca807 100644
--- a/net/l2tp/l2tp_netlink.c
+++ b/net/l2tp/l2tp_netlink.c
@@ -521,11 +521,6 @@  static int l2tp_nl_cmd_session_create(struct sk_buff *skb, struct genl_info *inf
 		goto out;
 	}
 	session_id = nla_get_u32(info->attrs[L2TP_ATTR_SESSION_ID]);
-	session = l2tp_session_find(net, tunnel, session_id);
-	if (session) {
-		ret = -EEXIST;
-		goto out;
-	}
 
 	if (!info->attrs[L2TP_ATTR_PEER_SESSION_ID]) {
 		ret = -EINVAL;