Merge tag 'backlight-for-linus-3.15' of git://git.kernel.org/pub/scm/linux/kernel...

[firefly-linux-kernel-4.4.55.git] / net / l2tp / l2tp_core.c

diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 735d0f60c83a126683b599d1e967eb9ca18b0471..47f7a549055591b3015ceea709ac06fb1056d53e 100644 (file)
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -112,7 +112,6 @@ struct l2tp_net {
        spinlock_t l2tp_session_hlist_lock;
 };
 
-static void l2tp_session_set_header_len(struct l2tp_session *session, int version);
 static void l2tp_tunnel_free(struct l2tp_tunnel *tunnel);
 
 static inline struct l2tp_tunnel *l2tp_tunnel(struct sock *sk)
@@ -1131,7 +1130,7 @@ static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb,
        /* Queue the packet to IP for output */
        skb->local_df = 1;
 #if IS_ENABLED(CONFIG_IPV6)
-       if (skb->sk->sk_family == PF_INET6 && !tunnel->v4mapped)
+       if (tunnel->sock->sk_family == PF_INET6 && !tunnel->v4mapped)
                error = inet6_csk_xmit(skb, NULL);
        else
 #endif
@@ -1151,23 +1150,6 @@ static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb,
        return 0;
 }
 
-/* Automatically called when the skb is freed.
- */
-static void l2tp_sock_wfree(struct sk_buff *skb)
-{
-       sock_put(skb->sk);
-}
-
-/* For data skbs that we transmit, we associate with the tunnel socket
- * but don't do accounting.
- */
-static inline void l2tp_skb_set_owner_w(struct sk_buff *skb, struct sock *sk)
-{
-       sock_hold(sk);
-       skb->sk = sk;
-       skb->destructor = l2tp_sock_wfree;
-}
-
 #if IS_ENABLED(CONFIG_IPV6)
 static void l2tp_xmit_ipv6_csum(struct sock *sk, struct sk_buff *skb,
                                int udp_len)
@@ -1221,7 +1203,6 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len
                return NET_XMIT_DROP;
        }
 
-       skb_orphan(skb);
        /* Setup L2TP header */
        session->build_header(session, __skb_push(skb, hdr_len));
 
@@ -1287,8 +1268,6 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len
                break;
        }
 
-       l2tp_skb_set_owner_w(skb, sk);
-
        l2tp_xmit_core(session, skb, fl, data_len);
 out_unlock:
        bh_unlock_sock(sk);
@@ -1809,8 +1788,6 @@ void l2tp_session_free(struct l2tp_session *session)
        }
 
        kfree(session);
-
-       return;
 }
 EXPORT_SYMBOL_GPL(l2tp_session_free);
 
@@ -1863,7 +1840,7 @@ EXPORT_SYMBOL_GPL(l2tp_session_delete);
 /* We come here whenever a session's send_seq, cookie_len or
  * l2specific_len parameters are set.
  */
-static void l2tp_session_set_header_len(struct l2tp_session *session, int version)
+void l2tp_session_set_header_len(struct l2tp_session *session, int version)
 {
        if (version == L2TP_HDR_VER_2) {
                session->hdr_len = 6;
@@ -1876,6 +1853,7 @@ static void l2tp_session_set_header_len(struct l2tp_session *session, int versio
        }
 
 }
+EXPORT_SYMBOL_GPL(l2tp_session_set_header_len);
 
 struct l2tp_session *l2tp_session_create(int priv_size, struct l2tp_tunnel *tunnel, u32 session_id, u32 peer_session_id, struct l2tp_session_cfg *cfg)
 {
@@ -2016,7 +1994,7 @@ static int __init l2tp_init(void)
        if (rc)
                goto out;
 
-       l2tp_wq = alloc_workqueue("l2tp", WQ_NON_REENTRANT | WQ_UNBOUND, 0);
+       l2tp_wq = alloc_workqueue("l2tp", WQ_UNBOUND, 0);
        if (!l2tp_wq) {
                pr_err("alloc_workqueue failed\n");
                rc = -ENOMEM;