143 static inline struct l2tp_session *pppol2tp_sock_to_session(struct sock *sk)  in pppol2tp_sock_to_session()  argument
147 	if (sk == NULL)  in pppol2tp_sock_to_session()
150 	sock_hold(sk);  in pppol2tp_sock_to_session()
151 	session = (struct l2tp_session *)(sk->sk_user_data);  in pppol2tp_sock_to_session()
153 		sock_put(sk);  in pppol2tp_sock_to_session()
193 	struct sock *sk = sock->sk;  in pppol2tp_recvmsg()  local
196 	if (sk->sk_state & PPPOX_BOUND)  in pppol2tp_recvmsg()
200 	skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,  in pppol2tp_recvmsg()
222 	struct sock *sk = NULL;  in pppol2tp_recv()  local
227 	sk = ps->sock;  in pppol2tp_recv()
228 	if (sk == NULL)  in pppol2tp_recv()
231 	if (sk->sk_state & PPPOX_BOUND) {  in pppol2tp_recv()
253 		po = pppox_sk(sk);  in pppol2tp_recv()
260 		if (sock_queue_rcv_skb(sk, skb) < 0) {  in pppol2tp_recv()
301 	struct sock *sk = sock->sk;  in pppol2tp_sendmsg()  local
310 	if (sock_flag(sk, SOCK_DEAD) || !(sk->sk_state & PPPOX_CONNECTED))  in pppol2tp_sendmsg()
315 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_sendmsg()
328 	skb = sock_wmalloc(sk, NET_SKB_PAD + sizeof(struct iphdr) +  in pppol2tp_sendmsg()
359 	sock_put(sk);  in pppol2tp_sendmsg()
366 	sock_put(sk);  in pppol2tp_sendmsg()
388 	struct sock *sk = (struct sock *) chan->private;  in pppol2tp_xmit()  local
395 	if (sock_flag(sk, SOCK_DEAD) || !(sk->sk_state & PPPOX_CONNECTED))  in pppol2tp_xmit()
399 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_xmit()
430 	sock_put(sk);  in pppol2tp_xmit()
436 	sock_put(sk);  in pppol2tp_xmit()
452 	struct sock *sk = ps->sock;  in pppol2tp_session_close()  local
453 	struct socket *sock = sk->sk_socket;  in pppol2tp_session_close()
467 static void pppol2tp_session_destruct(struct sock *sk)  in pppol2tp_session_destruct()  argument
469 	struct l2tp_session *session = sk->sk_user_data;  in pppol2tp_session_destruct()
471 		sk->sk_user_data = NULL;  in pppol2tp_session_destruct()
481 	struct sock *sk = sock->sk;  in pppol2tp_release()  local
485 	if (!sk)  in pppol2tp_release()
489 	lock_sock(sk);  in pppol2tp_release()
490 	if (sock_flag(sk, SOCK_DEAD) != 0)  in pppol2tp_release()
493 	pppox_unbind_sock(sk);  in pppol2tp_release()
496 	sk->sk_state = PPPOX_DEAD;  in pppol2tp_release()
497 	sock_orphan(sk);  in pppol2tp_release()
498 	sock->sk = NULL;  in pppol2tp_release()
500 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_release()
506 		sock_put(sk);  in pppol2tp_release()
508 	skb_queue_purge(&sk->sk_receive_queue);  in pppol2tp_release()
509 	skb_queue_purge(&sk->sk_write_queue);  in pppol2tp_release()
511 	release_sock(sk);  in pppol2tp_release()
517 	sock_put(sk);  in pppol2tp_release()
522 	release_sock(sk);  in pppol2tp_release()
532 static int pppol2tp_backlog_recv(struct sock *sk, struct sk_buff *skb)  in pppol2tp_backlog_recv()  argument
536 	rc = l2tp_udp_encap_recv(sk, skb);  in pppol2tp_backlog_recv()
548 	struct sock *sk;  in pppol2tp_create()  local
550 	sk = sk_alloc(net, PF_PPPOX, GFP_KERNEL, &pppol2tp_sk_proto, kern);  in pppol2tp_create()
551 	if (!sk)  in pppol2tp_create()
554 	sock_init_data(sock, sk);  in pppol2tp_create()
559 	sk->sk_backlog_rcv = pppol2tp_backlog_recv;  in pppol2tp_create()
560 	sk->sk_protocol	   = PX_PROTO_OL2TP;  in pppol2tp_create()
561 	sk->sk_family	   = PF_PPPOX;  in pppol2tp_create()
562 	sk->sk_state	   = PPPOX_NONE;  in pppol2tp_create()
563 	sk->sk_type	   = SOCK_STREAM;  in pppol2tp_create()
564 	sk->sk_destruct	   = pppol2tp_session_destruct;  in pppol2tp_create()
591 	struct sock *sk = sock->sk;  in pppol2tp_connect()  local
593 	struct pppox_sock *po = pppox_sk(sk);  in pppol2tp_connect()
605 	lock_sock(sk);  in pppol2tp_connect()
613 	if (sk->sk_state & PPPOX_CONNECTED)  in pppol2tp_connect()
618 	if (sk->sk_user_data)  in pppol2tp_connect()
670 	tunnel = l2tp_tunnel_find(sock_net(sk), tunnel_id);  in pppol2tp_connect()
682 			error = l2tp_tunnel_create(sock_net(sk), fd, ver, tunnel_id, peer_tunnel_id, &tcfg, &tunnel);  in pppol2tp_connect()
709 	session = l2tp_session_find(sock_net(sk), tunnel, session_id);  in pppol2tp_connect()
738 	ps->sock	     = sk;  in pppol2tp_connect()
781 	po->chan.private = sk;  in pppol2tp_connect()
785 	error = ppp_register_net_channel(sock_net(sk), &po->chan);  in pppol2tp_connect()
791 	sk->sk_user_data = session;  in pppol2tp_connect()
792 	sk->sk_state = PPPOX_CONNECTED;  in pppol2tp_connect()
797 	release_sock(sk);  in pppol2tp_connect()
867 	struct sock *sk = sock->sk;  in pppol2tp_getname()  local
872 	if (sk == NULL)  in pppol2tp_getname()
874 	if (sk->sk_state != PPPOX_CONNECTED)  in pppol2tp_getname()
878 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_getname()
968 	sock_put(sk);  in pppol2tp_getname()
1006 	struct sock *sk;  in pppol2tp_session_ioctl()  local
1016 	sk = ps->sock;  in pppol2tp_session_ioctl()
1017 	sock_hold(sk);  in pppol2tp_session_ioctl()
1022 		if (!(sk->sk_state & PPPOX_CONNECTED))  in pppol2tp_session_ioctl()
1039 		if (!(sk->sk_state & PPPOX_CONNECTED))  in pppol2tp_session_ioctl()
1055 		if (!(sk->sk_state & PPPOX_CONNECTED))  in pppol2tp_session_ioctl()
1069 		if (!(sk->sk_state & PPPOX_CONNECTED))  in pppol2tp_session_ioctl()
1104 		if (!(sk->sk_state & PPPOX_CONNECTED))  in pppol2tp_session_ioctl()
1124 	sock_put(sk);  in pppol2tp_session_ioctl()
1139 	struct sock *sk;  in pppol2tp_tunnel_ioctl()  local
1146 	sk = tunnel->sock;  in pppol2tp_tunnel_ioctl()
1147 	sock_hold(sk);  in pppol2tp_tunnel_ioctl()
1152 		if (!(sk->sk_state & PPPOX_CONNECTED))  in pppol2tp_tunnel_ioctl()
1163 				l2tp_session_find(sock_net(sk), tunnel, stats.session_id);  in pppol2tp_tunnel_ioctl()
1171 		stats.using_ipsec = (sk->sk_policy[0] || sk->sk_policy[1]) ? 1 : 0;  in pppol2tp_tunnel_ioctl()
1188 	sock_put(sk);  in pppol2tp_tunnel_ioctl()
1199 	struct sock *sk = sock->sk;  in pppol2tp_ioctl()  local
1205 	if (!sk)  in pppol2tp_ioctl()
1209 	if (sock_flag(sk, SOCK_DEAD) != 0)  in pppol2tp_ioctl()
1213 	if ((sk->sk_user_data == NULL) ||  in pppol2tp_ioctl()
1214 	    (!(sk->sk_state & (PPPOX_CONNECTED | PPPOX_BOUND))))  in pppol2tp_ioctl()
1219 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_ioctl()
1242 	sock_put(sk);  in pppol2tp_ioctl()
1259 static int pppol2tp_tunnel_setsockopt(struct sock *sk,  in pppol2tp_tunnel_setsockopt()  argument
1282 static int pppol2tp_session_setsockopt(struct sock *sk,  in pppol2tp_session_setsockopt()  argument
1359 	struct sock *sk = sock->sk;  in pppol2tp_setsockopt()  local
1376 	if (sk->sk_user_data == NULL)  in pppol2tp_setsockopt()
1381 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_setsockopt()
1395 		err = pppol2tp_tunnel_setsockopt(sk, tunnel, optname, val);  in pppol2tp_setsockopt()
1398 		err = pppol2tp_session_setsockopt(sk, session, optname, val);  in pppol2tp_setsockopt()
1403 	sock_put(sk);  in pppol2tp_setsockopt()
1410 static int pppol2tp_tunnel_getsockopt(struct sock *sk,  in pppol2tp_tunnel_getsockopt()  argument
1433 static int pppol2tp_session_getsockopt(struct sock *sk,  in pppol2tp_session_getsockopt()  argument
1485 	struct sock *sk = sock->sk;  in pppol2tp_getsockopt()  local
1504 	if (sk->sk_user_data == NULL)  in pppol2tp_getsockopt()
1509 	session = pppol2tp_sock_to_session(sk);  in pppol2tp_getsockopt()
1522 		err = pppol2tp_tunnel_getsockopt(sk, tunnel, optname, &val);  in pppol2tp_getsockopt()
1525 		err = pppol2tp_session_getsockopt(sk, session, optname, &val);  in pppol2tp_getsockopt()
1537 	sock_put(sk);  in pppol2tp_getsockopt()