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()
213 static void pppol2tp_recv(struct l2tp_session *session, struct sk_buff *skb, int data_len)  in pppol2tp_recv()  argument
215 	struct pppol2tp_session *ps = l2tp_session_priv(session);  in pppol2tp_recv()
244 			atomic_long_inc(&session->stats.rx_errors);  in pppol2tp_recv()
254 	pr_warn_ratelimited("%s: no socket in recv\n", session->name);  in pppol2tp_recv()
272 	struct l2tp_session *session;  in pppol2tp_sendmsg()  local
282 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_sendmsg()
283 	if (!session)  in pppol2tp_sendmsg()
286 	tunnel = session->tunnel;  in pppol2tp_sendmsg()
293 			   uhlen + session->hdr_len +  in pppol2tp_sendmsg()
319 	l2tp_xmit_skb(session, skb);  in pppol2tp_sendmsg()
349 	struct l2tp_session *session;  in pppol2tp_xmit()  local
357 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_xmit()
358 	if (!session)  in pppol2tp_xmit()
361 	tunnel = session->tunnel;  in pppol2tp_xmit()
367 		   session->hdr_len +	/* L2TP header */  in pppol2tp_xmit()
378 	l2tp_xmit_skb(session, skb);  in pppol2tp_xmit()
410 	struct l2tp_session *session = sk->sk_user_data;  in pppol2tp_session_destruct()  local
415 	if (session) {  in pppol2tp_session_destruct()
417 		if (WARN_ON(session->magic != L2TP_SESSION_MAGIC))  in pppol2tp_session_destruct()
419 		l2tp_session_dec_refcount(session);  in pppol2tp_session_destruct()
428 	struct l2tp_session *session;  in pppol2tp_release()  local
446 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_release()
447 	if (session) {  in pppol2tp_release()
450 		l2tp_session_delete(session);  in pppol2tp_release()
452 		ps = l2tp_session_priv(session);  in pppol2tp_release()
529 	struct l2tp_session *session = arg;  in pppol2tp_show()  local
532 	sk = pppol2tp_session_get_sock(session);  in pppol2tp_show()
541 static void pppol2tp_session_init(struct l2tp_session *session)  in pppol2tp_session_init()  argument
545 	session->recv_skb = pppol2tp_recv;  in pppol2tp_session_init()
547 		session->show = pppol2tp_show;  in pppol2tp_session_init()
549 	ps = l2tp_session_priv(session);  in pppol2tp_session_init()
661 	struct l2tp_session *session = NULL;  in pppol2tp_connect()  local
747 	session = l2tp_tunnel_get_session(tunnel, info.session_id);  in pppol2tp_connect()
748 	if (session) {  in pppol2tp_connect()
751 		if (session->pwtype != L2TP_PWTYPE_PPP) {  in pppol2tp_connect()
756 		ps = l2tp_session_priv(session);  in pppol2tp_connect()
772 		session = l2tp_session_create(sizeof(struct pppol2tp_session),  in pppol2tp_connect()
775 		if (IS_ERR(session)) {  in pppol2tp_connect()
776 			error = PTR_ERR(session);  in pppol2tp_connect()
780 		pppol2tp_session_init(session);  in pppol2tp_connect()
781 		ps = l2tp_session_priv(session);  in pppol2tp_connect()
782 		l2tp_session_inc_refcount(session);  in pppol2tp_connect()
785 		error = l2tp_session_register(session, tunnel);  in pppol2tp_connect()
788 			kfree(session);  in pppol2tp_connect()
800 	if (session->session_id == 0 && session->peer_session_id == 0) {  in pppol2tp_connect()
823 	sk->sk_user_data = session;  in pppol2tp_connect()
838 			l2tp_session_delete(session);  in pppol2tp_connect()
843 		l2tp_session_dec_refcount(session);  in pppol2tp_connect()
859 	struct l2tp_session *session;  in pppol2tp_session_create()  local
868 	session = l2tp_session_create(sizeof(struct pppol2tp_session),  in pppol2tp_session_create()
871 	if (IS_ERR(session)) {  in pppol2tp_session_create()
872 		error = PTR_ERR(session);  in pppol2tp_session_create()
876 	pppol2tp_session_init(session);  in pppol2tp_session_create()
878 	error = l2tp_session_register(session, tunnel);  in pppol2tp_session_create()
885 	kfree(session);  in pppol2tp_session_create()
899 	struct l2tp_session *session;  in pppol2tp_getname()  local
912 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_getname()
913 	if (!session)  in pppol2tp_getname()
916 	pls = l2tp_session_priv(session);  in pppol2tp_getname()
917 	tunnel = session->tunnel;  in pppol2tp_getname()
931 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
932 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
949 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
950 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
967 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
968 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
986 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
987 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
1030 	struct l2tp_session *session;  in pppol2tp_tunnel_copy_stats()  local
1040 	session = l2tp_tunnel_get_session(tunnel, stats->session_id);  in pppol2tp_tunnel_copy_stats()
1041 	if (!session)  in pppol2tp_tunnel_copy_stats()
1044 	if (session->pwtype != L2TP_PWTYPE_PPP) {  in pppol2tp_tunnel_copy_stats()
1045 		l2tp_session_dec_refcount(session);  in pppol2tp_tunnel_copy_stats()
1049 	pppol2tp_copy_stats(stats, &session->stats);  in pppol2tp_tunnel_copy_stats()
1050 	l2tp_session_dec_refcount(session);  in pppol2tp_tunnel_copy_stats()
1059 	struct l2tp_session *session;  in pppol2tp_ioctl()  local
1064 		session = sock->sk->sk_user_data;  in pppol2tp_ioctl()
1065 		if (!session)  in pppol2tp_ioctl()
1068 		if (WARN_ON(session->magic != L2TP_SESSION_MAGIC))  in pppol2tp_ioctl()
1072 		if (!session->session_id && !session->peer_session_id)  in pppol2tp_ioctl()
1081 		session = sock->sk->sk_user_data;  in pppol2tp_ioctl()
1082 		if (!session)  in pppol2tp_ioctl()
1085 		if (WARN_ON(session->magic != L2TP_SESSION_MAGIC))  in pppol2tp_ioctl()
1089 		if (!session->session_id && !session->peer_session_id)  in pppol2tp_ioctl()
1097 		session = sock->sk->sk_user_data;  in pppol2tp_ioctl()
1098 		if (!session)  in pppol2tp_ioctl()
1101 		if (WARN_ON(session->magic != L2TP_SESSION_MAGIC))  in pppol2tp_ioctl()
1105 		if (!session->session_id && !session->peer_session_id) {  in pppol2tp_ioctl()
1115 							 session->tunnel);  in pppol2tp_ioctl()
1121 			pppol2tp_copy_stats(&stats, &session->stats);  in pppol2tp_ioctl()
1122 			stats.session_id = session->session_id;  in pppol2tp_ioctl()
1124 		stats.tunnel_id = session->tunnel->tunnel_id;  in pppol2tp_ioctl()
1125 		stats.using_ipsec = l2tp_tunnel_uses_xfrm(session->tunnel);  in pppol2tp_ioctl()
1172 				       struct l2tp_session *session,  in pppol2tp_session_setsockopt()  argument
1183 		session->recv_seq = !!val;  in pppol2tp_session_setsockopt()
1191 		session->send_seq = !!val;  in pppol2tp_session_setsockopt()
1198 		l2tp_session_set_header_len(session, session->tunnel->version);  in pppol2tp_session_setsockopt()
1206 		session->lns_mode = !!val;  in pppol2tp_session_setsockopt()
1214 		session->reorder_timeout = msecs_to_jiffies(val);  in pppol2tp_session_setsockopt()
1234 	struct l2tp_session *session;  in pppol2tp_setsockopt()  local
1254 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_setsockopt()
1255 	if (!session)  in pppol2tp_setsockopt()
1260 	if (session->session_id == 0 && session->peer_session_id == 0) {  in pppol2tp_setsockopt()
1261 		tunnel = session->tunnel;  in pppol2tp_setsockopt()
1264 		err = pppol2tp_session_setsockopt(sk, session, optname, val);  in pppol2tp_setsockopt()
1297 				       struct l2tp_session *session,  in pppol2tp_session_getsockopt()  argument
1304 		*val = session->recv_seq;  in pppol2tp_session_getsockopt()
1308 		*val = session->send_seq;  in pppol2tp_session_getsockopt()
1312 		*val = session->lns_mode;  in pppol2tp_session_getsockopt()
1321 		*val = (int)jiffies_to_msecs(session->reorder_timeout);  in pppol2tp_session_getsockopt()
1340 	struct l2tp_session *session;  in pppol2tp_getsockopt()  local
1362 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_getsockopt()
1363 	if (!session)  in pppol2tp_getsockopt()
1367 	if (session->session_id == 0 && session->peer_session_id == 0) {  in pppol2tp_getsockopt()
1368 		tunnel = session->tunnel;  in pppol2tp_getsockopt()
1373 		err = pppol2tp_session_getsockopt(sk, session, optname, &val);  in pppol2tp_getsockopt()
1408 	struct l2tp_session *session;	/* NULL means get next tunnel */  member
1432 	if (pd->session)  in pppol2tp_next_session()
1433 		l2tp_session_dec_refcount(pd->session);  in pppol2tp_next_session()
1435 	pd->session = l2tp_session_get_nth(pd->tunnel, pd->session_idx);  in pppol2tp_next_session()
1438 	if (!pd->session) {  in pppol2tp_next_session()
1467 	if (!pd->tunnel && !pd->session)  in pppol2tp_seq_start()
1490 	if (pd->session) {  in pppol2tp_seq_stop()
1491 		l2tp_session_dec_refcount(pd->session);  in pppol2tp_seq_stop()
1492 		pd->session = NULL;  in pppol2tp_seq_stop()
1520 	struct l2tp_session *session = v;  in pppol2tp_seq_session_show()  local
1521 	struct l2tp_tunnel *tunnel = session->tunnel;  in pppol2tp_seq_session_show()
1535 	sk = pppol2tp_session_get_sock(session);  in pppol2tp_seq_session_show()
1538 		user_data_ok = (session == sk->sk_user_data) ? 'Y' : 'N';  in pppol2tp_seq_session_show()
1545 		   session->name, ip, port,  in pppol2tp_seq_session_show()
1547 		   session->session_id,  in pppol2tp_seq_session_show()
1549 		   session->peer_session_id,  in pppol2tp_seq_session_show()
1552 		   session->recv_seq ? 'R' : '-',  in pppol2tp_seq_session_show()
1553 		   session->send_seq ? 'S' : '-',  in pppol2tp_seq_session_show()
1554 		   session->lns_mode ? "LNS" : "LAC",  in pppol2tp_seq_session_show()
1556 		   jiffies_to_msecs(session->reorder_timeout));  in pppol2tp_seq_session_show()
1558 		   session->nr, session->ns,  in pppol2tp_seq_session_show()
1559 		   atomic_long_read(&session->stats.tx_packets),  in pppol2tp_seq_session_show()
1560 		   atomic_long_read(&session->stats.tx_bytes),  in pppol2tp_seq_session_show()
1561 		   atomic_long_read(&session->stats.tx_errors),  in pppol2tp_seq_session_show()
1562 		   atomic_long_read(&session->stats.rx_packets),  in pppol2tp_seq_session_show()
1563 		   atomic_long_read(&session->stats.rx_bytes),  in pppol2tp_seq_session_show()
1564 		   atomic_long_read(&session->stats.rx_errors));  in pppol2tp_seq_session_show()
1589 	if (!pd->session)  in pppol2tp_seq_show()
1592 		pppol2tp_seq_session_show(m, pd->session);  in pppol2tp_seq_show()