142 static struct sock *pppol2tp_session_get_sock(struct l2tp_session *session)  in pppol2tp_session_get_sock()  argument
144 	struct pppol2tp_session *ps = l2tp_session_priv(session);  in pppol2tp_session_get_sock()
160 	struct l2tp_session *session;  in pppol2tp_sock_to_session()  local
166 	session = (struct l2tp_session *)(sk->sk_user_data);  in pppol2tp_sock_to_session()
167 	if (session == NULL) {  in pppol2tp_sock_to_session()
172 	BUG_ON(session->magic != L2TP_SESSION_MAGIC);  in pppol2tp_sock_to_session()
175 	return session;  in pppol2tp_sock_to_session()
215 static void pppol2tp_recv(struct l2tp_session *session, struct sk_buff *skb, int data_len)  in pppol2tp_recv()  argument
217 	struct pppol2tp_session *ps = l2tp_session_priv(session);  in pppol2tp_recv()
242 		l2tp_dbg(session, L2TP_MSG_DATA,  in pppol2tp_recv()
244 			 session->name, data_len);  in pppol2tp_recv()
249 		l2tp_dbg(session, L2TP_MSG_DATA,  in pppol2tp_recv()
251 			 session->name, data_len);  in pppol2tp_recv()
254 			atomic_long_inc(&session->stats.rx_errors);  in pppol2tp_recv()
264 	l2tp_info(session, L2TP_MSG_DATA, "%s: no socket\n", session->name);  in pppol2tp_recv()
282 	struct l2tp_session *session;  in pppol2tp_sendmsg()  local
292 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_sendmsg()
293 	if (session == NULL)  in pppol2tp_sendmsg()
296 	tunnel = session->tunnel;  in pppol2tp_sendmsg()
303 			   uhlen + session->hdr_len +  in pppol2tp_sendmsg()
329 	l2tp_xmit_skb(session, skb, session->hdr_len);  in pppol2tp_sendmsg()
359 	struct l2tp_session *session;  in pppol2tp_xmit()  local
367 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_xmit()
368 	if (session == NULL)  in pppol2tp_xmit()
371 	tunnel = session->tunnel;  in pppol2tp_xmit()
377 		   session->hdr_len +	/* L2TP header */  in pppol2tp_xmit()
388 	l2tp_xmit_skb(session, skb, session->hdr_len);  in pppol2tp_xmit()
420 	struct l2tp_session *session = sk->sk_user_data;  in pppol2tp_session_destruct()  local
425 	if (session) {  in pppol2tp_session_destruct()
427 		BUG_ON(session->magic != L2TP_SESSION_MAGIC);  in pppol2tp_session_destruct()
428 		l2tp_session_dec_refcount(session);  in pppol2tp_session_destruct()
437 	struct l2tp_session *session;  in pppol2tp_release()  local
455 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_release()
456 	if (session) {  in pppol2tp_release()
459 		l2tp_session_delete(session);  in pppol2tp_release()
461 		ps = l2tp_session_priv(session);  in pppol2tp_release()
538 	struct l2tp_session *session = arg;  in pppol2tp_show()  local
541 	sk = pppol2tp_session_get_sock(session);  in pppol2tp_show()
550 static void pppol2tp_session_init(struct l2tp_session *session)  in pppol2tp_session_init()  argument
554 	session->recv_skb = pppol2tp_recv;  in pppol2tp_session_init()
556 		session->show = pppol2tp_show;  in pppol2tp_session_init()
558 	ps = l2tp_session_priv(session);  in pppol2tp_session_init()
670 	struct l2tp_session *session = NULL;  in pppol2tp_connect()  local
757 	session = l2tp_tunnel_get_session(tunnel, info.session_id);  in pppol2tp_connect()
758 	if (session) {  in pppol2tp_connect()
761 		if (session->pwtype != L2TP_PWTYPE_PPP) {  in pppol2tp_connect()
766 		ps = l2tp_session_priv(session);  in pppol2tp_connect()
782 		session = l2tp_session_create(sizeof(struct pppol2tp_session),  in pppol2tp_connect()
785 		if (IS_ERR(session)) {  in pppol2tp_connect()
786 			error = PTR_ERR(session);  in pppol2tp_connect()
790 		pppol2tp_session_init(session);  in pppol2tp_connect()
791 		ps = l2tp_session_priv(session);  in pppol2tp_connect()
792 		l2tp_session_inc_refcount(session);  in pppol2tp_connect()
795 		error = l2tp_session_register(session, tunnel);  in pppol2tp_connect()
798 			kfree(session);  in pppol2tp_connect()
810 	if ((session->session_id == 0) &&  in pppol2tp_connect()
811 	    (session->peer_session_id == 0)) {  in pppol2tp_connect()
834 	sk->sk_user_data = session;  in pppol2tp_connect()
845 	l2tp_info(session, L2TP_MSG_CONTROL, "%s: created\n",  in pppol2tp_connect()
846 		  session->name);  in pppol2tp_connect()
851 			l2tp_session_delete(session);  in pppol2tp_connect()
856 		l2tp_session_dec_refcount(session);  in pppol2tp_connect()
872 	struct l2tp_session *session;  in pppol2tp_session_create()  local
881 	session = l2tp_session_create(sizeof(struct pppol2tp_session),  in pppol2tp_session_create()
884 	if (IS_ERR(session)) {  in pppol2tp_session_create()
885 		error = PTR_ERR(session);  in pppol2tp_session_create()
889 	pppol2tp_session_init(session);  in pppol2tp_session_create()
891 	error = l2tp_session_register(session, tunnel);  in pppol2tp_session_create()
898 	kfree(session);  in pppol2tp_session_create()
912 	struct l2tp_session *session;  in pppol2tp_getname()  local
925 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_getname()
926 	if (session == NULL)  in pppol2tp_getname()
929 	pls = l2tp_session_priv(session);  in pppol2tp_getname()
930 	tunnel = session->tunnel;  in pppol2tp_getname()
943 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
944 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
962 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
963 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
981 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
982 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
999 		sp.pppol2tp.s_session = session->session_id;  in pppol2tp_getname()
1000 		sp.pppol2tp.d_session = session->peer_session_id;  in pppol2tp_getname()
1043 	struct l2tp_session *session;  in pppol2tp_tunnel_copy_stats()  local
1053 	session = l2tp_tunnel_get_session(tunnel, stats->session_id);  in pppol2tp_tunnel_copy_stats()
1054 	if (!session)  in pppol2tp_tunnel_copy_stats()
1057 	if (session->pwtype != L2TP_PWTYPE_PPP) {  in pppol2tp_tunnel_copy_stats()
1058 		l2tp_session_dec_refcount(session);  in pppol2tp_tunnel_copy_stats()
1062 	pppol2tp_copy_stats(stats, &session->stats);  in pppol2tp_tunnel_copy_stats()
1063 	l2tp_session_dec_refcount(session);  in pppol2tp_tunnel_copy_stats()
1072 	struct l2tp_session *session;  in pppol2tp_ioctl()  local
1078 		session = sock->sk->sk_user_data;  in pppol2tp_ioctl()
1079 		if (!session)  in pppol2tp_ioctl()
1083 		if (!session->session_id && !session->peer_session_id)  in pppol2tp_ioctl()
1092 		session = sock->sk->sk_user_data;  in pppol2tp_ioctl()
1093 		if (!session)  in pppol2tp_ioctl()
1097 		if (!session->session_id && !session->peer_session_id)  in pppol2tp_ioctl()
1105 		session = sock->sk->sk_user_data;  in pppol2tp_ioctl()
1106 		if (!session)  in pppol2tp_ioctl()
1110 		if (!session->session_id && !session->peer_session_id) {  in pppol2tp_ioctl()
1120 							 session->tunnel);  in pppol2tp_ioctl()
1126 			pppol2tp_copy_stats(&stats, &session->stats);  in pppol2tp_ioctl()
1127 			stats.session_id = session->session_id;  in pppol2tp_ioctl()
1129 		stats.tunnel_id = session->tunnel->tunnel_id;  in pppol2tp_ioctl()
1130 		stats.using_ipsec = l2tp_tunnel_uses_xfrm(session->tunnel);  in pppol2tp_ioctl()
1179 				       struct l2tp_session *session,  in pppol2tp_session_setsockopt()  argument
1190 		session->recv_seq = !!val;  in pppol2tp_session_setsockopt()
1191 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_setsockopt()
1193 			  session->name, session->recv_seq);  in pppol2tp_session_setsockopt()
1201 		session->send_seq = !!val;  in pppol2tp_session_setsockopt()
1208 		l2tp_session_set_header_len(session, session->tunnel->version);  in pppol2tp_session_setsockopt()
1209 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_setsockopt()
1211 			  session->name, session->send_seq);  in pppol2tp_session_setsockopt()
1219 		session->lns_mode = !!val;  in pppol2tp_session_setsockopt()
1220 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_setsockopt()
1222 			  session->name, session->lns_mode);  in pppol2tp_session_setsockopt()
1226 		session->debug = val;  in pppol2tp_session_setsockopt()
1227 		l2tp_info(session, L2TP_MSG_CONTROL, "%s: set debug=%x\n",  in pppol2tp_session_setsockopt()
1228 			  session->name, session->debug);  in pppol2tp_session_setsockopt()
1232 		session->reorder_timeout = msecs_to_jiffies(val);  in pppol2tp_session_setsockopt()
1233 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_setsockopt()
1235 			  session->name, session->reorder_timeout);  in pppol2tp_session_setsockopt()
1255 	struct l2tp_session *session;  in pppol2tp_setsockopt()  local
1275 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_setsockopt()
1276 	if (session == NULL)  in pppol2tp_setsockopt()
1281 	if ((session->session_id == 0) &&  in pppol2tp_setsockopt()
1282 	    (session->peer_session_id == 0)) {  in pppol2tp_setsockopt()
1283 		tunnel = session->tunnel;  in pppol2tp_setsockopt()
1286 		err = pppol2tp_session_setsockopt(sk, session, optname, val);  in pppol2tp_setsockopt()
1320 				       struct l2tp_session *session,  in pppol2tp_session_getsockopt()  argument
1327 		*val = session->recv_seq;  in pppol2tp_session_getsockopt()
1328 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_getsockopt()
1329 			  "%s: get recv_seq=%d\n", session->name, *val);  in pppol2tp_session_getsockopt()
1333 		*val = session->send_seq;  in pppol2tp_session_getsockopt()
1334 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_getsockopt()
1335 			  "%s: get send_seq=%d\n", session->name, *val);  in pppol2tp_session_getsockopt()
1339 		*val = session->lns_mode;  in pppol2tp_session_getsockopt()
1340 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_getsockopt()
1341 			  "%s: get lns_mode=%d\n", session->name, *val);  in pppol2tp_session_getsockopt()
1345 		*val = session->debug;  in pppol2tp_session_getsockopt()
1346 		l2tp_info(session, L2TP_MSG_CONTROL, "%s: get debug=%d\n",  in pppol2tp_session_getsockopt()
1347 			  session->name, *val);  in pppol2tp_session_getsockopt()
1351 		*val = (int) jiffies_to_msecs(session->reorder_timeout);  in pppol2tp_session_getsockopt()
1352 		l2tp_info(session, L2TP_MSG_CONTROL,  in pppol2tp_session_getsockopt()
1353 			  "%s: get reorder_timeout=%d\n", session->name, *val);  in pppol2tp_session_getsockopt()
1372 	struct l2tp_session *session;  in pppol2tp_getsockopt()  local
1394 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_getsockopt()
1395 	if (session == NULL)  in pppol2tp_getsockopt()
1399 	if ((session->session_id == 0) &&  in pppol2tp_getsockopt()
1400 	    (session->peer_session_id == 0)) {  in pppol2tp_getsockopt()
1401 		tunnel = session->tunnel;  in pppol2tp_getsockopt()
1406 		err = pppol2tp_session_getsockopt(sk, session, optname, &val);  in pppol2tp_getsockopt()
1441 	struct l2tp_session *session;	/* NULL means get next tunnel */  member
1465 	if (pd->session)  in pppol2tp_next_session()
1466 		l2tp_session_dec_refcount(pd->session);  in pppol2tp_next_session()
1468 	pd->session = l2tp_session_get_nth(pd->tunnel, pd->session_idx);  in pppol2tp_next_session()
1471 	if (pd->session == NULL) {  in pppol2tp_next_session()
1496 	if ((pd->tunnel == NULL) && (pd->session == NULL))  in pppol2tp_seq_start()
1519 	if (pd->session) {  in pppol2tp_seq_stop()
1520 		l2tp_session_dec_refcount(pd->session);  in pppol2tp_seq_stop()
1521 		pd->session = NULL;  in pppol2tp_seq_stop()
1549 	struct l2tp_session *session = v;  in pppol2tp_seq_session_show()  local
1550 	struct l2tp_tunnel *tunnel = session->tunnel;  in pppol2tp_seq_session_show()
1563 	sk = pppol2tp_session_get_sock(session);  in pppol2tp_seq_session_show()
1566 		user_data_ok = (session == sk->sk_user_data) ? 'Y' : 'N';  in pppol2tp_seq_session_show()
1574 		   session->name, ip, port,  in pppol2tp_seq_session_show()
1576 		   session->session_id,  in pppol2tp_seq_session_show()
1578 		   session->peer_session_id,  in pppol2tp_seq_session_show()
1581 		   session->recv_seq ? 'R' : '-',  in pppol2tp_seq_session_show()
1582 		   session->send_seq ? 'S' : '-',  in pppol2tp_seq_session_show()
1583 		   session->lns_mode ? "LNS" : "LAC",  in pppol2tp_seq_session_show()
1584 		   session->debug,  in pppol2tp_seq_session_show()
1585 		   jiffies_to_msecs(session->reorder_timeout));  in pppol2tp_seq_session_show()
1587 		   session->nr, session->ns,  in pppol2tp_seq_session_show()
1588 		   atomic_long_read(&session->stats.tx_packets),  in pppol2tp_seq_session_show()
1589 		   atomic_long_read(&session->stats.tx_bytes),  in pppol2tp_seq_session_show()
1590 		   atomic_long_read(&session->stats.tx_errors),  in pppol2tp_seq_session_show()
1591 		   atomic_long_read(&session->stats.rx_packets),  in pppol2tp_seq_session_show()
1592 		   atomic_long_read(&session->stats.rx_bytes),  in pppol2tp_seq_session_show()
1593 		   atomic_long_read(&session->stats.rx_errors));  in pppol2tp_seq_session_show()
1619 	if (!pd->session)  in pppol2tp_seq_show()
1622 		pppol2tp_seq_session_show(m, pd->session);  in pppol2tp_seq_show()