Merge branch 'l2tp-trivial-cleanups'

Guillaume Nault says:

====================
l2tp: trivial cleanups

Just a set of unrelated trivial cleanups (remove unused code, make
local functions static, etc.).
====================

Signed-off-by: David S. Miller <[e-mail]>

net/l2tp/l2tp_core.c

···
 
 	if (tunnel->version == L2TP_HDR_VER_3) {
 		pn = l2tp_pernet(tunnel->l2tp_net);
-		g_head = l2tp_session_id_hash_2(l2tp_pernet(tunnel->l2tp_net),
-						session->session_id);
+		g_head = l2tp_session_id_hash_2(pn, session->session_id);
 
 		spin_lock_bh(&pn->l2tp_session_hlist_lock);
 
···
 
 /* Drop skbs from the session's reorder_q
  */
-int l2tp_session_queue_purge(struct l2tp_session *session)
+static int l2tp_session_queue_purge(struct l2tp_session *session)
 {
 	struct sk_buff *skb = NULL;
 	BUG_ON(!session);
···
 	}
 	return 0;
 }
-EXPORT_SYMBOL_GPL(l2tp_session_queue_purge);
 
 /* Internal UDP receive frame. Do the real work of receiving an L2TP data frame
  * here. The skb is not on a list when we get here.
···
 	return bufp - optr;
 }
 
-static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb,
-			  struct flowi *fl, size_t data_len)
+static void l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb,
+			   struct flowi *fl, size_t data_len)
 {
 	struct l2tp_tunnel *tunnel = session->tunnel;
 	unsigned int len = skb->len;
···
 		atomic_long_inc(&tunnel->stats.tx_errors);
 		atomic_long_inc(&session->stats.tx_errors);
 	}
-
-	return 0;
 }
 
 /* If caller requires the skb to have a ppp header, the header must be
···
 
 /* When the tunnel is closed, all the attached sessions need to go too.
  */
-void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel)
+static void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel)
 {
 	int hash;
 	struct hlist_node *walk;
···
 	}
 	write_unlock_bh(&tunnel->hlist_lock);
 }
-EXPORT_SYMBOL_GPL(l2tp_tunnel_closeall);
 
 /* Tunnel socket destroy hook for UDP encapsulation */
 static void l2tp_udp_encap_destroy(struct sock *sk)

net/l2tp/l2tp_core.h

···
 	struct net		*l2tp_net;	/* the net we belong to */
 
 	refcount_t		ref_count;
-#ifdef CONFIG_DEBUG_FS
-	void (*show)(struct seq_file *m, void *arg);
-#endif
 	int (*recv_payload_hook)(struct sk_buff *skb);
 	void (*old_sk_destruct)(struct sock *);
 	struct sock		*sock;		/* Parent socket */
···
 						 * was created by userspace */
 
 	struct work_struct	del_work;
-
-	uint8_t			priv[0];	/* private data */
 };
 
 struct l2tp_nl_cmd_ops {
···
 			      struct l2tp_session_cfg *cfg);
 	int (*session_delete)(struct l2tp_session *session);
 };
-
-static inline void *l2tp_tunnel_priv(struct l2tp_tunnel *tunnel)
-{
-	return &tunnel->priv[0];
-}
 
 static inline void *l2tp_session_priv(struct l2tp_session *session)
 {
···
 int l2tp_tunnel_register(struct l2tp_tunnel *tunnel, struct net *net,
 			 struct l2tp_tunnel_cfg *cfg);
 
-void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel);
 void l2tp_tunnel_delete(struct l2tp_tunnel *tunnel);
 struct l2tp_session *l2tp_session_create(int priv_size,
 					 struct l2tp_tunnel *tunnel,
···
 void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
 		      unsigned char *ptr, unsigned char *optr, u16 hdrflags,
 		      int length, int (*payload_hook)(struct sk_buff *skb));
-int l2tp_session_queue_purge(struct l2tp_session *session);
 int l2tp_udp_encap_recv(struct sock *sk, struct sk_buff *skb);
 void l2tp_session_set_header_len(struct l2tp_session *session, int version);
 

net/l2tp/l2tp_debugfs.c

···
 		   atomic_long_read(&tunnel->stats.rx_packets),
 		   atomic_long_read(&tunnel->stats.rx_bytes),
 		   atomic_long_read(&tunnel->stats.rx_errors));
-
-	if (tunnel->show != NULL)
-		tunnel->show(m, tunnel);
 }
 
 static void l2tp_dfs_seq_session_show(struct seq_file *m, void *v)

net/l2tp/l2tp_ppp.c

···
 	sock_put(ps->__sk);
 }
 
-/* Called by l2tp_core when a session socket is being closed.
- */
-static void pppol2tp_session_close(struct l2tp_session *session)
-{
-}
-
 /* Really kill the session socket. (Called from sock_put() if
  * refcnt == 0.)
  */
···
 	struct dst_entry *dst;
 
 	session->recv_skb = pppol2tp_recv;
-	session->session_close = pppol2tp_session_close;
 #if IS_ENABLED(CONFIG_L2TP_DEBUGFS)
 	session->show = pppol2tp_show;
 #endif