137 static struct sock *pppol2tp_session_get_sock(struct l2tp_session *session)  in pppol2tp_session_get_sock()  argument
139 	struct pppol2tp_session *ps = l2tp_session_priv(session);  in pppol2tp_session_get_sock()
155 	struct l2tp_session *session;  in pppol2tp_sock_to_session()  local
161 	session = (struct l2tp_session *)(sk->sk_user_data);  in pppol2tp_sock_to_session()
162 	if (!session) {  in pppol2tp_sock_to_session()
166 	if (WARN_ON(session->magic != L2TP_SESSION_MAGIC)) {  in pppol2tp_sock_to_session()
167 		session = NULL;  in pppol2tp_sock_to_session()
173 	return session;  in pppol2tp_sock_to_session()
212 static void pppol2tp_recv(struct l2tp_session *session, struct sk_buff *skb, int data_len)  in pppol2tp_recv()  argument
214 	struct pppol2tp_session *ps = l2tp_session_priv(session);  in pppol2tp_recv()
243 			atomic_long_inc(&session->stats.rx_errors);  in pppol2tp_recv()
253 	pr_warn_ratelimited("%s: no socket in recv\n", session->name);  in pppol2tp_recv()
271 	struct l2tp_session *session;  in pppol2tp_sendmsg()  local
281 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_sendmsg()
282 	if (!session)  in pppol2tp_sendmsg()
285 	tunnel = session->tunnel;  in pppol2tp_sendmsg()
292 			   uhlen + session->hdr_len +  in pppol2tp_sendmsg()
318 	l2tp_xmit_skb(session, skb);  in pppol2tp_sendmsg()
348 	struct l2tp_session *session;  in pppol2tp_xmit()  local
356 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_xmit()
357 	if (!session)  in pppol2tp_xmit()
360 	tunnel = session->tunnel;  in pppol2tp_xmit()
366 		   session->hdr_len +	/* L2TP header */  in pppol2tp_xmit()
377 	l2tp_xmit_skb(session, skb);  in pppol2tp_xmit()
409 	struct l2tp_session *session = sk->sk_user_data;  in pppol2tp_session_destruct()  local
414 	if (session) {  in pppol2tp_session_destruct()
416 		if (WARN_ON(session->magic != L2TP_SESSION_MAGIC))  in pppol2tp_session_destruct()
418 		l2tp_session_dec_refcount(session);  in pppol2tp_session_destruct()
427 	struct l2tp_session *session;  in pppol2tp_release()  local
445 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_release()
446 	if (session) {  in pppol2tp_release()
449 		l2tp_session_delete(session);  in pppol2tp_release()
451 		ps = l2tp_session_priv(session);  in pppol2tp_release()
528 	struct l2tp_session *session = arg;  in pppol2tp_show()  local
531 	sk = pppol2tp_session_get_sock(session);  in pppol2tp_show()
540 static void pppol2tp_session_init(struct l2tp_session *session)  in pppol2tp_session_init()  argument
544 	session->recv_skb = pppol2tp_recv;  in pppol2tp_session_init()
546 		session->show = pppol2tp_show;  in pppol2tp_session_init()
548 	ps = l2tp_session_priv(session);  in pppol2tp_session_init()
660 	struct l2tp_session *session = NULL;  in pppol2tp_connect()  local
746 	session = l2tp_tunnel_get_session(tunnel, info.session_id);  in pppol2tp_connect()
747 	if (session) {  in pppol2tp_connect()
750 		if (session->pwtype != L2TP_PWTYPE_PPP) {  in pppol2tp_connect()
755 		ps = l2tp_session_priv(session);  in pppol2tp_connect()
771 		session = l2tp_session_create(sizeof(struct pppol2tp_session),  in pppol2tp_connect()
774 		if (IS_ERR(session)) {  in pppol2tp_connect()
775 			error = PTR_ERR(session);  in pppol2tp_connect()
779 		pppol2tp_session_init(session);  in pppol2tp_connect()
780 		ps = l2tp_session_priv(session);  in pppol2tp_connect()
781 		l2tp_session_inc_refcount(session);  in pppol2tp_connect()
784 		error = l2tp_session_register(session, tunnel);  in pppol2tp_connect()
787 			kfree(session);  in pppol2tp_connect()
799 	if (session->session_id == 0 && session->peer_session_id == 0) {  in pppol2tp_connect()
822 	sk->sk_user_data = session;  in pppol2tp_connect()
837 			l2tp_session_delete(session);  in pppol2tp_connect()
842 		l2tp_session_dec_refcount(session);  in pppol2tp_connect()
858 	struct l2tp_session *session;  in pppol2tp_session_create()  local
867 	session = l2tp_session_create(sizeof(struct pppol2tp_session),  in pppol2tp_session_create()
870 	if (IS_ERR(session)) {  in pppol2tp_session_create()
871 		error = PTR_ERR(session);  in pppol2tp_session_create()
875 	pppol2tp_session_init(session);  in pppol2tp_session_create()
877 	error = l2tp_session_register(session, tunnel);  in pppol2tp_session_create()
884 	kfree(session);  in pppol2tp_session_create()
898 	struct l2tp_session *session;  in pppol2tp_getname()  local
911 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_getname()
912 	if (!session)  in pppol2tp_getname()
915 	pls = l2tp_session_priv(session);  in pppol2tp_getname()
916 	tunnel = session->tunnel;  in pppol2tp_getname()
930 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
931 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
948 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
949 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
966 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
967 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
985 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
986 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
1029 	struct l2tp_session *session;  in pppol2tp_tunnel_copy_stats()  local
1039 	session = l2tp_tunnel_get_session(tunnel, stats->session_id);  in pppol2tp_tunnel_copy_stats()
1040 	if (!session)  in pppol2tp_tunnel_copy_stats()
1043 	if (session->pwtype != L2TP_PWTYPE_PPP) {  in pppol2tp_tunnel_copy_stats()
1044 		l2tp_session_dec_refcount(session);  in pppol2tp_tunnel_copy_stats()
1048 	pppol2tp_copy_stats(stats, &session->stats);  in pppol2tp_tunnel_copy_stats()
1049 	l2tp_session_dec_refcount(session);  in pppol2tp_tunnel_copy_stats()
1058 	struct l2tp_session *session;  in pppol2tp_ioctl()  local
1063 		session = sock->sk->sk_user_data;  in pppol2tp_ioctl()
1064 		if (!session)  in pppol2tp_ioctl()
1067 		if (WARN_ON(session->magic != L2TP_SESSION_MAGIC))  in pppol2tp_ioctl()
1071 		if (!session->session_id && !session->peer_session_id)  in pppol2tp_ioctl()
1080 		session = sock->sk->sk_user_data;  in pppol2tp_ioctl()
1081 		if (!session)  in pppol2tp_ioctl()
1084 		if (WARN_ON(session->magic != L2TP_SESSION_MAGIC))  in pppol2tp_ioctl()
1088 		if (!session->session_id && !session->peer_session_id)  in pppol2tp_ioctl()
1096 		session = sock->sk->sk_user_data;  in pppol2tp_ioctl()
1097 		if (!session)  in pppol2tp_ioctl()
1100 		if (WARN_ON(session->magic != L2TP_SESSION_MAGIC))  in pppol2tp_ioctl()
1104 		if (!session->session_id && !session->peer_session_id) {  in pppol2tp_ioctl()
1114 							 session->tunnel);  in pppol2tp_ioctl()
1120 			pppol2tp_copy_stats(&stats, &session->stats);  in pppol2tp_ioctl()
1121 			stats.session_id = session->session_id;  in pppol2tp_ioctl()
1123 		stats.tunnel_id = session->tunnel->tunnel_id;  in pppol2tp_ioctl()
1124 		stats.using_ipsec = l2tp_tunnel_uses_xfrm(session->tunnel);  in pppol2tp_ioctl()
1171 				       struct l2tp_session *session,  in pppol2tp_session_setsockopt()  argument
1182 		session->recv_seq = !!val;  in pppol2tp_session_setsockopt()
1190 		session->send_seq = !!val;  in pppol2tp_session_setsockopt()
1197 		l2tp_session_set_header_len(session, session->tunnel->version);  in pppol2tp_session_setsockopt()
1205 		session->lns_mode = !!val;  in pppol2tp_session_setsockopt()
1213 		session->reorder_timeout = msecs_to_jiffies(val);  in pppol2tp_session_setsockopt()
1233 	struct l2tp_session *session;  in pppol2tp_setsockopt()  local
1253 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_setsockopt()
1254 	if (!session)  in pppol2tp_setsockopt()
1259 	if (session->session_id == 0 && session->peer_session_id == 0) {  in pppol2tp_setsockopt()
1260 		tunnel = session->tunnel;  in pppol2tp_setsockopt()
1263 		err = pppol2tp_session_setsockopt(sk, session, optname, val);  in pppol2tp_setsockopt()
1296 				       struct l2tp_session *session,  in pppol2tp_session_getsockopt()  argument
1303 		*val = session->recv_seq;  in pppol2tp_session_getsockopt()
1307 		*val = session->send_seq;  in pppol2tp_session_getsockopt()
1311 		*val = session->lns_mode;  in pppol2tp_session_getsockopt()
1320 		*val = (int)jiffies_to_msecs(session->reorder_timeout);  in pppol2tp_session_getsockopt()
1339 	struct l2tp_session *session;  in pppol2tp_getsockopt()  local
1361 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_getsockopt()
1362 	if (!session)  in pppol2tp_getsockopt()
1366 	if (session->session_id == 0 && session->peer_session_id == 0) {  in pppol2tp_getsockopt()
1367 		tunnel = session->tunnel;  in pppol2tp_getsockopt()
1372 		err = pppol2tp_session_getsockopt(sk, session, optname, &val);  in pppol2tp_getsockopt()
1407 	struct l2tp_session *session;	/* NULL means get next tunnel */  member
1431 	if (pd->session)  in pppol2tp_next_session()
1432 		l2tp_session_dec_refcount(pd->session);  in pppol2tp_next_session()
1434 	pd->session = l2tp_session_get_nth(pd->tunnel, pd->session_idx);  in pppol2tp_next_session()
1437 	if (!pd->session) {  in pppol2tp_next_session()
1466 	if (!pd->tunnel && !pd->session)  in pppol2tp_seq_start()
1489 	if (pd->session) {  in pppol2tp_seq_stop()
1490 		l2tp_session_dec_refcount(pd->session);  in pppol2tp_seq_stop()
1491 		pd->session = NULL;  in pppol2tp_seq_stop()
1519 	struct l2tp_session *session = v;  in pppol2tp_seq_session_show()  local
1520 	struct l2tp_tunnel *tunnel = session->tunnel;  in pppol2tp_seq_session_show()
1534 	sk = pppol2tp_session_get_sock(session);  in pppol2tp_seq_session_show()
1537 		user_data_ok = (session == sk->sk_user_data) ? 'Y' : 'N';  in pppol2tp_seq_session_show()
1544 		   session->name, ip, port,  in pppol2tp_seq_session_show()
1546 		   session->session_id,  in pppol2tp_seq_session_show()
1548 		   session->peer_session_id,  in pppol2tp_seq_session_show()
1551 		   session->recv_seq ? 'R' : '-',  in pppol2tp_seq_session_show()
1552 		   session->send_seq ? 'S' : '-',  in pppol2tp_seq_session_show()
1553 		   session->lns_mode ? "LNS" : "LAC",  in pppol2tp_seq_session_show()
1555 		   jiffies_to_msecs(session->reorder_timeout));  in pppol2tp_seq_session_show()
1557 		   session->nr, session->ns,  in pppol2tp_seq_session_show()
1558 		   atomic_long_read(&session->stats.tx_packets),  in pppol2tp_seq_session_show()
1559 		   atomic_long_read(&session->stats.tx_bytes),  in pppol2tp_seq_session_show()
1560 		   atomic_long_read(&session->stats.tx_errors),  in pppol2tp_seq_session_show()
1561 		   atomic_long_read(&session->stats.rx_packets),  in pppol2tp_seq_session_show()
1562 		   atomic_long_read(&session->stats.rx_bytes),  in pppol2tp_seq_session_show()
1563 		   atomic_long_read(&session->stats.rx_errors));  in pppol2tp_seq_session_show()
1588 	if (!pd->session)  in pppol2tp_seq_show()
1591 		pppol2tp_seq_session_show(m, pd->session);  in pppol2tp_seq_show()