diff options
| author | Guillaume Nault <g.nault@alphalink.fr> | 2020-05-22 00:57:24 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-27 16:40:30 +0200 |
| commit | 263afb2e4cfc69131c563edfc84c1f92b0bbcd2f (patch) | |
| tree | 6c2b57c9a547c00e3270a9c71fafb59e961f2943 /net | |
| parent | 83fc9ba9f1abc77abd083cdd479182c140625b98 (diff) | |
l2tp: remove useless duplicate session detection in l2tp_netlink
commit af87ae465abdc070de0dc35d6c6a9e7a8cd82987 upstream.
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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Giuliano Procida <gprocida@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/l2tp/l2tp_netlink.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c index 63a2430ff40a..afee3d54e5ef 100644 --- a/net/l2tp/l2tp_netlink.c +++ b/net/l2tp/l2tp_netlink.c @@ -505,11 +505,6 @@ 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; |