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Subject[PATCH 4.4 45/65] l2tp: remove l2tp_session_find()
Date
From: Guillaume Nault <g.nault@alphalink.fr>

commit 55a3ce3b9d98f752df9e2cfb1cba7e715522428a upstream.

This function isn't used anymore.

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>
---
net/l2tp/l2tp_core.c | 51 +--------------------------------------------------
net/l2tp/l2tp_core.h | 3 ---
2 files changed, 1 insertion(+), 53 deletions(-)

--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -216,27 +216,6 @@ static void l2tp_tunnel_sock_put(struct
sock_put(sk);
}

-/* Lookup a session by id in the global session list
- */
-static struct l2tp_session *l2tp_session_find_2(struct net *net, u32 session_id)
-{
- struct l2tp_net *pn = l2tp_pernet(net);
- struct hlist_head *session_list =
- l2tp_session_id_hash_2(pn, session_id);
- struct l2tp_session *session;
-
- rcu_read_lock_bh();
- hlist_for_each_entry_rcu(session, session_list, global_hlist) {
- if (session->session_id == session_id) {
- rcu_read_unlock_bh();
- return session;
- }
- }
- rcu_read_unlock_bh();
-
- return NULL;
-}
-
/* Session hash list.
* The session_id SHOULD be random according to RFC2661, but several
* L2TP implementations (Cisco and Microsoft) use incrementing
@@ -249,35 +228,7 @@ l2tp_session_id_hash(struct l2tp_tunnel
return &tunnel->session_hlist[hash_32(session_id, L2TP_HASH_BITS)];
}

-/* Lookup a session by id
- */
-struct l2tp_session *l2tp_session_find(struct net *net, struct l2tp_tunnel *tunnel, u32 session_id)
-{
- struct hlist_head *session_list;
- struct l2tp_session *session;
-
- /* In L2TPv3, session_ids are unique over all tunnels and we
- * sometimes need to look them up before we know the
- * tunnel.
- */
- if (tunnel == NULL)
- return l2tp_session_find_2(net, session_id);
-
- session_list = l2tp_session_id_hash(tunnel, session_id);
- read_lock_bh(&tunnel->hlist_lock);
- hlist_for_each_entry(session, session_list, hlist) {
- if (session->session_id == session_id) {
- read_unlock_bh(&tunnel->hlist_lock);
- return session;
- }
- }
- read_unlock_bh(&tunnel->hlist_lock);
-
- return NULL;
-}
-EXPORT_SYMBOL_GPL(l2tp_session_find);
-
-/* Like l2tp_session_find() but takes a reference on the returned session.
+/* Lookup a session. A new reference is held on the returned session.
* Optionally calls session->ref() too if do_ref is true.
*/
struct l2tp_session *l2tp_session_get(struct net *net,
--- a/net/l2tp/l2tp_core.h
+++ b/net/l2tp/l2tp_core.h
@@ -237,9 +237,6 @@ out:
struct l2tp_session *l2tp_session_get(struct net *net,
struct l2tp_tunnel *tunnel,
u32 session_id, bool do_ref);
-struct l2tp_session *l2tp_session_find(struct net *net,
- struct l2tp_tunnel *tunnel,
- u32 session_id);
struct l2tp_session *l2tp_session_get_nth(struct l2tp_tunnel *tunnel, int nth,
bool do_ref);
struct l2tp_session *l2tp_session_get_by_ifname(struct net *net, char *ifname,

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