138 static struct sock *pppol2tp_session_get_sock(struct l2tp_session *session)  in pppol2tp_session_get_sock()  argument
140 	struct pppol2tp_session *ps = l2tp_session_priv(session);  in pppol2tp_session_get_sock()
156 	struct l2tp_session *session;  in pppol2tp_sock_to_session()  local
162 	session = (struct l2tp_session *)(sk->sk_user_data);  in pppol2tp_sock_to_session()
163 	if (session == NULL) {  in pppol2tp_sock_to_session()
168 	BUG_ON(session->magic != L2TP_SESSION_MAGIC);  in pppol2tp_sock_to_session()
171 	return session;  in pppol2tp_sock_to_session()
211 static void pppol2tp_recv(struct l2tp_session *session, struct sk_buff *skb, int data_len)  in pppol2tp_recv()  argument
213 	struct pppol2tp_session *ps = l2tp_session_priv(session);  in pppol2tp_recv()
238 		l2tp_dbg(session, L2TP_MSG_DATA,  in pppol2tp_recv()
240 			 session->name, data_len);  in pppol2tp_recv()
245 		l2tp_dbg(session, L2TP_MSG_DATA,  in pppol2tp_recv()
247 			 session->name, data_len);  in pppol2tp_recv()
250 			atomic_long_inc(&session->stats.rx_errors);  in pppol2tp_recv()
260 	l2tp_info(session, L2TP_MSG_DATA, "%s: no socket\n", session->name);  in pppol2tp_recv()
278 	struct l2tp_session *session;  in pppol2tp_sendmsg()  local
288 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_sendmsg()
289 	if (session == NULL)  in pppol2tp_sendmsg()
292 	tunnel = session->tunnel;  in pppol2tp_sendmsg()
299 			   uhlen + session->hdr_len +  in pppol2tp_sendmsg()
325 	l2tp_xmit_skb(session, skb, session->hdr_len);  in pppol2tp_sendmsg()
355 	struct l2tp_session *session;  in pppol2tp_xmit()  local
363 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_xmit()
364 	if (session == NULL)  in pppol2tp_xmit()
367 	tunnel = session->tunnel;  in pppol2tp_xmit()
373 		   session->hdr_len +	/* L2TP header */  in pppol2tp_xmit()
384 	l2tp_xmit_skb(session, skb, session->hdr_len);  in pppol2tp_xmit()
416 	struct l2tp_session *session = sk->sk_user_data;  in pppol2tp_session_destruct()  local
421 	if (session) {  in pppol2tp_session_destruct()
423 		BUG_ON(session->magic != L2TP_SESSION_MAGIC);  in pppol2tp_session_destruct()
424 		l2tp_session_dec_refcount(session);  in pppol2tp_session_destruct()
433 	struct l2tp_session *session;  in pppol2tp_release()  local
451 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_release()
452 	if (session) {  in pppol2tp_release()
455 		l2tp_session_delete(session);  in pppol2tp_release()
457 		ps = l2tp_session_priv(session);  in pppol2tp_release()
534 	struct l2tp_session *session = arg;  in pppol2tp_show()  local
537 	sk = pppol2tp_session_get_sock(session);  in pppol2tp_show()
546 static void pppol2tp_session_init(struct l2tp_session *session)  in pppol2tp_session_init()  argument
550 	session->recv_skb = pppol2tp_recv;  in pppol2tp_session_init()
552 		session->show = pppol2tp_show;  in pppol2tp_session_init()
554 	ps = l2tp_session_priv(session);  in pppol2tp_session_init()
666 	struct l2tp_session *session = NULL;  in pppol2tp_connect()  local
753 	session = l2tp_tunnel_get_session(tunnel, info.session_id);  in pppol2tp_connect()
754 	if (session) {  in pppol2tp_connect()
757 		if (session->pwtype != L2TP_PWTYPE_PPP) {  in pppol2tp_connect()
762 		ps = l2tp_session_priv(session);  in pppol2tp_connect()
778 		session = l2tp_session_create(sizeof(struct pppol2tp_session),  in pppol2tp_connect()
781 		if (IS_ERR(session)) {  in pppol2tp_connect()
782 			error = PTR_ERR(session);  in pppol2tp_connect()
786 		pppol2tp_session_init(session);  in pppol2tp_connect()
787 		ps = l2tp_session_priv(session);  in pppol2tp_connect()
788 		l2tp_session_inc_refcount(session);  in pppol2tp_connect()
791 		error = l2tp_session_register(session, tunnel);  in pppol2tp_connect()
794 			kfree(session);  in pppol2tp_connect()
806 	if ((session->session_id == 0) &&  in pppol2tp_connect()
807 	    (session->peer_session_id == 0)) {  in pppol2tp_connect()
830 	sk->sk_user_data = session;  in pppol2tp_connect()
841 	l2tp_info(session, L2TP_MSG_CONTROL, "%s: created\n",  in pppol2tp_connect()
842 		  session->name);  in pppol2tp_connect()
847 			l2tp_session_delete(session);  in pppol2tp_connect()
852 		l2tp_session_dec_refcount(session);  in pppol2tp_connect()
868 	struct l2tp_session *session;  in pppol2tp_session_create()  local
877 	session = l2tp_session_create(sizeof(struct pppol2tp_session),  in pppol2tp_session_create()
880 	if (IS_ERR(session)) {  in pppol2tp_session_create()
881 		error = PTR_ERR(session);  in pppol2tp_session_create()
885 	pppol2tp_session_init(session);  in pppol2tp_session_create()
887 	error = l2tp_session_register(session, tunnel);  in pppol2tp_session_create()
894 	kfree(session);  in pppol2tp_session_create()
908 	struct l2tp_session *session;  in pppol2tp_getname()  local
921 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_getname()
922 	if (session == NULL)  in pppol2tp_getname()
925 	pls = l2tp_session_priv(session);  in pppol2tp_getname()
926 	tunnel = session->tunnel;  in pppol2tp_getname()
939 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
940 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
958 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
959 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
977 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
978 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
995 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
996 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
1039 	struct l2tp_session *session;  in pppol2tp_tunnel_copy_stats()  local
1049 	session = l2tp_tunnel_get_session(tunnel, stats->session_id);  in pppol2tp_tunnel_copy_stats()
1050 	if (!session)  in pppol2tp_tunnel_copy_stats()
1053 	if (session->pwtype != L2TP_PWTYPE_PPP) {  in pppol2tp_tunnel_copy_stats()
1054 		l2tp_session_dec_refcount(session);  in pppol2tp_tunnel_copy_stats()
1058 	pppol2tp_copy_stats(stats, &session->stats);  in pppol2tp_tunnel_copy_stats()
1059 	l2tp_session_dec_refcount(session);  in pppol2tp_tunnel_copy_stats()
1068 	struct l2tp_session *session;  in pppol2tp_ioctl()  local
1073 		session = sock->sk->sk_user_data;  in pppol2tp_ioctl()
1074 		if (!session)  in pppol2tp_ioctl()
1078 		if (!session->session_id && !session->peer_session_id)  in pppol2tp_ioctl()
1087 		session = sock->sk->sk_user_data;  in pppol2tp_ioctl()
1088 		if (!session)  in pppol2tp_ioctl()
1092 		if (!session->session_id && !session->peer_session_id)  in pppol2tp_ioctl()
1100 		session = sock->sk->sk_user_data;  in pppol2tp_ioctl()
1101 		if (!session)  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()
1174 				       struct l2tp_session *session,  in pppol2tp_session_setsockopt()  argument
1185 		session->recv_seq = !!val;  in pppol2tp_session_setsockopt()
1186 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_setsockopt()
1188 			  session->name, session->recv_seq);  in pppol2tp_session_setsockopt()
1196 		session->send_seq = !!val;  in pppol2tp_session_setsockopt()
1203 		l2tp_session_set_header_len(session, session->tunnel->version);  in pppol2tp_session_setsockopt()
1204 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_setsockopt()
1206 			  session->name, session->send_seq);  in pppol2tp_session_setsockopt()
1214 		session->lns_mode = !!val;  in pppol2tp_session_setsockopt()
1215 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_setsockopt()
1217 			  session->name, session->lns_mode);  in pppol2tp_session_setsockopt()
1221 		session->debug = val;  in pppol2tp_session_setsockopt()
1222 		l2tp_info(session, L2TP_MSG_CONTROL, "%s: set debug=%x\n",  in pppol2tp_session_setsockopt()
1223 			  session->name, session->debug);  in pppol2tp_session_setsockopt()
1227 		session->reorder_timeout = msecs_to_jiffies(val);  in pppol2tp_session_setsockopt()
1228 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_setsockopt()
1230 			  session->name, session->reorder_timeout);  in pppol2tp_session_setsockopt()
1250 	struct l2tp_session *session;  in pppol2tp_setsockopt()  local
1270 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_setsockopt()
1271 	if (session == NULL)  in pppol2tp_setsockopt()
1276 	if ((session->session_id == 0) &&  in pppol2tp_setsockopt()
1277 	    (session->peer_session_id == 0)) {  in pppol2tp_setsockopt()
1278 		tunnel = session->tunnel;  in pppol2tp_setsockopt()
1281 		err = pppol2tp_session_setsockopt(sk, session, optname, val);  in pppol2tp_setsockopt()
1315 				       struct l2tp_session *session,  in pppol2tp_session_getsockopt()  argument
1322 		*val = session->recv_seq;  in pppol2tp_session_getsockopt()
1323 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_getsockopt()
1324 			  "%s: get recv_seq=%d\n", session->name, *val);  in pppol2tp_session_getsockopt()
1328 		*val = session->send_seq;  in pppol2tp_session_getsockopt()
1329 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_getsockopt()
1330 			  "%s: get send_seq=%d\n", session->name, *val);  in pppol2tp_session_getsockopt()
1334 		*val = session->lns_mode;  in pppol2tp_session_getsockopt()
1335 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_getsockopt()
1336 			  "%s: get lns_mode=%d\n", session->name, *val);  in pppol2tp_session_getsockopt()
1340 		*val = session->debug;  in pppol2tp_session_getsockopt()
1341 		l2tp_info(session, L2TP_MSG_CONTROL, "%s: get debug=%d\n",  in pppol2tp_session_getsockopt()
1342 			  session->name, *val);  in pppol2tp_session_getsockopt()
1346 		*val = (int) jiffies_to_msecs(session->reorder_timeout);  in pppol2tp_session_getsockopt()
1347 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_getsockopt()
1348 			  "%s: get reorder_timeout=%d\n", session->name, *val);  in pppol2tp_session_getsockopt()
1367 	struct l2tp_session *session;  in pppol2tp_getsockopt()  local
1389 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_getsockopt()
1390 	if (session == NULL)  in pppol2tp_getsockopt()
1394 	if ((session->session_id == 0) &&  in pppol2tp_getsockopt()
1395 	    (session->peer_session_id == 0)) {  in pppol2tp_getsockopt()
1396 		tunnel = session->tunnel;  in pppol2tp_getsockopt()
1401 		err = pppol2tp_session_getsockopt(sk, session, optname, &val);  in pppol2tp_getsockopt()
1436 	struct l2tp_session *session;	/* NULL means get next tunnel */  member
1460 	if (pd->session)  in pppol2tp_next_session()
1461 		l2tp_session_dec_refcount(pd->session);  in pppol2tp_next_session()
1463 	pd->session = l2tp_session_get_nth(pd->tunnel, pd->session_idx);  in pppol2tp_next_session()
1466 	if (pd->session == NULL) {  in pppol2tp_next_session()
1491 	if ((pd->tunnel == NULL) && (pd->session == NULL))  in pppol2tp_seq_start()
1514 	if (pd->session) {  in pppol2tp_seq_stop()
1515 		l2tp_session_dec_refcount(pd->session);  in pppol2tp_seq_stop()
1516 		pd->session = NULL;  in pppol2tp_seq_stop()
1544 	struct l2tp_session *session = v;  in pppol2tp_seq_session_show()  local
1545 	struct l2tp_tunnel *tunnel = session->tunnel;  in pppol2tp_seq_session_show()
1558 	sk = pppol2tp_session_get_sock(session);  in pppol2tp_seq_session_show()
1561 		user_data_ok = (session == sk->sk_user_data) ? 'Y' : 'N';  in pppol2tp_seq_session_show()
1569 		   session->name, ip, port,  in pppol2tp_seq_session_show()
1571 		   session->session_id,  in pppol2tp_seq_session_show()
1573 		   session->peer_session_id,  in pppol2tp_seq_session_show()
1576 		   session->recv_seq ? 'R' : '-',  in pppol2tp_seq_session_show()
1577 		   session->send_seq ? 'S' : '-',  in pppol2tp_seq_session_show()
1578 		   session->lns_mode ? "LNS" : "LAC",  in pppol2tp_seq_session_show()
1579 		   session->debug,  in pppol2tp_seq_session_show()
1580 		   jiffies_to_msecs(session->reorder_timeout));  in pppol2tp_seq_session_show()
1582 		   session->nr, session->ns,  in pppol2tp_seq_session_show()
1583 		   atomic_long_read(&session->stats.tx_packets),  in pppol2tp_seq_session_show()
1584 		   atomic_long_read(&session->stats.tx_bytes),  in pppol2tp_seq_session_show()
1585 		   atomic_long_read(&session->stats.tx_errors),  in pppol2tp_seq_session_show()
1586 		   atomic_long_read(&session->stats.rx_packets),  in pppol2tp_seq_session_show()
1587 		   atomic_long_read(&session->stats.rx_bytes),  in pppol2tp_seq_session_show()
1588 		   atomic_long_read(&session->stats.rx_errors));  in pppol2tp_seq_session_show()
1614 	if (!pd->session)  in pppol2tp_seq_show()
1617 		pppol2tp_seq_session_show(m, pd->session);  in pppol2tp_seq_show()