Lines Matching +full:imp +full:- +full:res +full:- +full:offset +full:- +full:value
4 * Copyright (c) 2001-2007, 2012-2017, Ericsson AB
5 * Copyright (c) 2004-2008, 2010-2013, Wind River Systems
73 * struct tipc_sock - TIPC socket structure
74 * @sk: socket - interacts with 'port' and with user via the socket API
77 * @published: non-zero if port has one or more associated names
161 return msg_prevnode(&tsk->phdr); in tsk_own_node()
166 return msg_destnode(&tsk->phdr); in tsk_peer_node()
171 return msg_destport(&tsk->phdr); in tsk_peer_port()
176 return msg_src_droppable(&tsk->phdr) != 0; in tsk_unreliable()
181 msg_set_src_droppable(&tsk->phdr, unreliable ? 1 : 0); in tsk_set_unreliable()
186 return msg_dest_droppable(&tsk->phdr) != 0; in tsk_unreturnable()
191 msg_set_dest_droppable(&tsk->phdr, unreturnable ? 1 : 0); in tsk_set_unreturnable()
196 return msg_importance(&tsk->phdr); in tsk_importance()
204 int tsk_set_importance(struct sock *sk, int imp) in tsk_set_importance() argument
206 if (imp > TIPC_CRITICAL_IMPORTANCE) in tsk_set_importance()
207 return -EINVAL; in tsk_set_importance()
208 msg_set_importance(&tipc_sk(sk)->phdr, (u32)imp); in tsk_set_importance()
214 return tsk->snt_unacked > tsk->snd_win; in tsk_conn_cong()
232 * - If block based flow control is not supported by peer we
237 if (likely(tsk->peer_caps & TIPC_BLOCK_FLOWCTL)) in tsk_inc()
242 /* tsk_set_nagle - enable/disable nagle property by manipulating maxnagle
246 struct sock *sk = &tsk->sk; in tsk_set_nagle()
248 tsk->maxnagle = 0; in tsk_set_nagle()
249 if (sk->sk_type != SOCK_STREAM) in tsk_set_nagle()
251 if (tsk->nodelay) in tsk_set_nagle()
253 if (!(tsk->peer_caps & TIPC_NAGLE)) in tsk_set_nagle()
256 if (tsk->max_pkt == MAX_MSG_SIZE) in tsk_set_nagle()
257 tsk->maxnagle = 1500; in tsk_set_nagle()
259 tsk->maxnagle = tsk->max_pkt; in tsk_set_nagle()
263 * tsk_advance_rx_queue - discard first buffer in socket receive queue
270 kfree_skb(__skb_dequeue(&sk->sk_receive_queue)); in tsk_advance_rx_queue()
291 * tsk_rej_rx_queue - reject all buffers in socket receive queue
299 while ((skb = __skb_dequeue(&sk->sk_receive_queue))) in tsk_rej_rx_queue()
305 return READ_ONCE(sk->sk_state) == TIPC_ESTABLISHED; in tipc_sk_connected()
308 /* tipc_sk_type_connectionless - check if the socket is datagram socket
315 return sk->sk_type == SOCK_RDM || sk->sk_type == SOCK_DGRAM; in tipc_sk_type_connectionless()
318 /* tsk_peer_msg - verify if message was sent by connected port's peer
325 struct sock *sk = &tsk->sk; in tsk_peer_msg()
351 /* tipc_set_sk_state - set the sk_state of the socket
360 int oldsk_state = sk->sk_state; in tipc_set_sk_state()
361 int res = -EINVAL; in tipc_set_sk_state() local
365 res = 0; in tipc_set_sk_state()
370 res = 0; in tipc_set_sk_state()
375 res = 0; in tipc_set_sk_state()
380 res = 0; in tipc_set_sk_state()
384 if (!res) in tipc_set_sk_state()
385 sk->sk_state = state; in tipc_set_sk_state()
387 return res; in tipc_set_sk_state()
392 struct sock *sk = sock->sk; in tipc_sk_sock_err()
394 int typ = sock->type; in tipc_sk_sock_err()
399 if (sk->sk_state == TIPC_DISCONNECTING) in tipc_sk_sock_err()
400 return -EPIPE; in tipc_sk_sock_err()
402 return -ENOTCONN; in tipc_sk_sock_err()
405 return -EAGAIN; in tipc_sk_sock_err()
421 sk_ = (sock_)->sk; \
436 * tipc_sk_create - create a TIPC socket
438 * @sock: pre-allocated socket structure
457 return -EPROTONOSUPPORT; in tipc_sk_create()
459 switch (sock->type) { in tipc_sk_create()
471 return -EPROTOTYPE; in tipc_sk_create()
477 return -ENOMEM; in tipc_sk_create()
480 tsk->max_pkt = MAX_PKT_DEFAULT; in tipc_sk_create()
481 tsk->maxnagle = 0; in tipc_sk_create()
482 tsk->nagle_start = NAGLE_START_INIT; in tipc_sk_create()
483 INIT_LIST_HEAD(&tsk->publications); in tipc_sk_create()
484 INIT_LIST_HEAD(&tsk->cong_links); in tipc_sk_create()
485 msg = &tsk->phdr; in tipc_sk_create()
488 sock->ops = ops; in tipc_sk_create()
494 return -EINVAL; in tipc_sk_create()
503 msg_set_origport(msg, tsk->portid); in tipc_sk_create()
504 timer_setup(&sk->sk_timer, tipc_sk_timeout, 0); in tipc_sk_create()
505 sk->sk_shutdown = 0; in tipc_sk_create()
506 sk->sk_backlog_rcv = tipc_sk_backlog_rcv; in tipc_sk_create()
507 sk->sk_rcvbuf = READ_ONCE(sysctl_tipc_rmem[1]); in tipc_sk_create()
508 sk->sk_data_ready = tipc_data_ready; in tipc_sk_create()
509 sk->sk_write_space = tipc_write_space; in tipc_sk_create()
510 sk->sk_destruct = tipc_sock_destruct; in tipc_sk_create()
511 tsk->conn_timeout = CONN_TIMEOUT_DEFAULT; in tipc_sk_create()
512 tsk->group_is_open = true; in tipc_sk_create()
513 atomic_set(&tsk->dupl_rcvcnt, 0); in tipc_sk_create()
516 tsk->snd_win = tsk_adv_blocks(RCVBUF_MIN); in tipc_sk_create()
517 tsk->rcv_win = tsk->snd_win; in tipc_sk_create()
521 if (sock->type == SOCK_DGRAM) in tipc_sk_create()
524 __skb_queue_head_init(&tsk->mc_method.deferredq); in tipc_sk_create()
533 sock_put(&tsk->sk); in tipc_sk_callback()
539 struct sock *sk = sock->sk; in __tipc_shutdown()
546 /* Avoid that hi-prio shutdown msgs bypass msgs in link wakeup queue */ in __tipc_shutdown()
547 tipc_wait_for_cond(sock, &timeout, (!tsk->cong_link_cnt && in __tipc_shutdown()
553 __skb_queue_purge(&sk->sk_write_queue); in __tipc_shutdown()
556 skb = skb_peek(&sk->sk_receive_queue); in __tipc_shutdown()
557 if (skb && TIPC_SKB_CB(skb)->bytes_read) { in __tipc_shutdown()
558 __skb_unlink(skb, &sk->sk_receive_queue); in __tipc_shutdown()
568 switch (sk->sk_state) { in __tipc_shutdown()
572 tipc_node_remove_conn(net, dnode, tsk->portid); in __tipc_shutdown()
573 /* Send a FIN+/- to its peer */ in __tipc_shutdown()
574 skb = __skb_dequeue(&sk->sk_receive_queue); in __tipc_shutdown()
576 __skb_queue_purge(&sk->sk_receive_queue); in __tipc_shutdown()
583 tsk->portid, error); in __tipc_shutdown()
585 tipc_node_xmit_skb(net, skb, dnode, tsk->portid); in __tipc_shutdown()
592 __skb_queue_purge(&sk->sk_receive_queue); in __tipc_shutdown()
598 * tipc_release - destroy a TIPC socket
605 * is partially-read, it is discarded and the next one is rejected instead.)
615 struct sock *sk = sock->sk; in tipc_release()
620 * releases a pre-allocated child socket that was never used) in tipc_release()
630 sk->sk_shutdown = SHUTDOWN_MASK; in tipc_release()
633 __skb_queue_purge(&tsk->mc_method.deferredq); in tipc_release()
634 sk_stop_timer(sk, &sk->sk_timer); in tipc_release()
640 tipc_dest_list_purge(&tsk->cong_links); in tipc_release()
641 tsk->cong_link_cnt = 0; in tipc_release()
642 call_rcu(&tsk->rcu, tipc_sk_callback); in tipc_release()
643 sock->sk = NULL; in tipc_release()
649 * tipc_bind - associate or disassocate TIPC name(s) with a socket
654 * Name and name sequence binding is indicated using a positive scope value;
655 * a negative scope value unbinds the specified name. Specifying no name
661 * access any non-constant socket information.
666 struct sock *sk = sock->sk; in tipc_bind()
669 int res = -EINVAL; in tipc_bind() local
673 res = tipc_sk_withdraw(tsk, 0, NULL); in tipc_bind()
676 if (tsk->group) { in tipc_bind()
677 res = -EACCES; in tipc_bind()
681 res = -EINVAL; in tipc_bind()
684 if (addr->family != AF_TIPC) { in tipc_bind()
685 res = -EAFNOSUPPORT; in tipc_bind()
689 if (addr->addrtype == TIPC_ADDR_NAME) in tipc_bind()
690 addr->addr.nameseq.upper = addr->addr.nameseq.lower; in tipc_bind()
691 else if (addr->addrtype != TIPC_ADDR_NAMESEQ) { in tipc_bind()
692 res = -EAFNOSUPPORT; in tipc_bind()
696 if ((addr->addr.nameseq.type < TIPC_RESERVED_TYPES) && in tipc_bind()
697 (addr->addr.nameseq.type != TIPC_TOP_SRV) && in tipc_bind()
698 (addr->addr.nameseq.type != TIPC_CFG_SRV)) { in tipc_bind()
699 res = -EACCES; in tipc_bind()
703 res = (addr->scope >= 0) ? in tipc_bind()
704 tipc_sk_publish(tsk, addr->scope, &addr->addr.nameseq) : in tipc_bind()
705 tipc_sk_withdraw(tsk, -addr->scope, &addr->addr.nameseq); in tipc_bind()
708 return res; in tipc_bind()
712 * tipc_getname - get port ID of socket or peer socket
727 struct sock *sk = sock->sk; in tipc_getname()
733 ((peer != 2) || (sk->sk_state != TIPC_DISCONNECTING))) in tipc_getname()
734 return -ENOTCONN; in tipc_getname()
735 addr->addr.id.ref = tsk_peer_port(tsk); in tipc_getname()
736 addr->addr.id.node = tsk_peer_node(tsk); in tipc_getname()
738 addr->addr.id.ref = tsk->portid; in tipc_getname()
739 addr->addr.id.node = tipc_own_addr(sock_net(sk)); in tipc_getname()
742 addr->addrtype = TIPC_ADDR_ID; in tipc_getname()
743 addr->family = AF_TIPC; in tipc_getname()
744 addr->scope = 0; in tipc_getname()
745 addr->addr.name.domain = 0; in tipc_getname()
751 * tipc_poll - read and possibly block on pollmask
756 * Returns pollmask value
760 * since the pollmask info is potentially out-of-date the moment this routine
771 struct sock *sk = sock->sk; in tipc_poll()
778 if (sk->sk_shutdown & RCV_SHUTDOWN) in tipc_poll()
780 if (sk->sk_shutdown == SHUTDOWN_MASK) in tipc_poll()
783 switch (sk->sk_state) { in tipc_poll()
785 if (!tsk->cong_link_cnt && !tsk_conn_cong(tsk)) in tipc_poll()
790 if (!skb_queue_empty_lockless(&sk->sk_receive_queue)) in tipc_poll()
794 if (tsk->group_is_open && !tsk->cong_link_cnt) in tipc_poll()
798 if (skb_queue_empty_lockless(&sk->sk_receive_queue)) in tipc_poll()
810 * tipc_sendmcast - send multicast message
823 struct sock *sk = sock->sk; in tipc_sendmcast()
825 struct tipc_msg *hdr = &tsk->phdr; in tipc_sendmcast()
828 struct tipc_mc_method *method = &tsk->mc_method; in tipc_sendmcast()
833 if (tsk->group) in tipc_sendmcast()
834 return -EACCES; in tipc_sendmcast()
837 rc = tipc_wait_for_cond(sock, &timeout, !tsk->cong_link_cnt); in tipc_sendmcast()
843 tipc_nametbl_lookup_dst_nodes(net, seq->type, seq->lower, in tipc_sendmcast()
844 seq->upper, &dsts); in tipc_sendmcast()
846 return -EHOSTUNREACH; in tipc_sendmcast()
854 msg_set_nametype(hdr, seq->type); in tipc_sendmcast()
855 msg_set_namelower(hdr, seq->lower); in tipc_sendmcast()
856 msg_set_nameupper(hdr, seq->upper); in tipc_sendmcast()
867 &tsk->cong_link_cnt); in tipc_sendmcast()
876 * tipc_send_group_msg - send a message to a member in the group
888 u16 bc_snd_nxt = tipc_group_bc_snd_nxt(tsk->group); in tipc_send_group_msg()
889 struct tipc_mc_method *method = &tsk->mc_method; in tipc_send_group_msg()
891 struct tipc_msg *hdr = &tsk->phdr; in tipc_send_group_msg()
904 mtu = tipc_node_get_mtu(net, dnode, tsk->portid, false); in tipc_send_group_msg()
910 rc = tipc_node_xmit(net, &pkts, dnode, tsk->portid); in tipc_send_group_msg()
911 if (unlikely(rc == -ELINKCONG)) { in tipc_send_group_msg()
912 tipc_dest_push(&tsk->cong_links, dnode, 0); in tipc_send_group_msg()
913 tsk->cong_link_cnt++; in tipc_send_group_msg()
920 method->rcast = true; in tipc_send_group_msg()
921 method->mandatory = true; in tipc_send_group_msg()
926 * tipc_send_group_unicast - send message to a member in the group
938 struct sock *sk = sock->sk; in tipc_send_group_unicast()
939 DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name); in tipc_send_group_unicast()
947 node = dest->addr.id.node; in tipc_send_group_unicast()
948 port = dest->addr.id.ref; in tipc_send_group_unicast()
950 return -EHOSTUNREACH; in tipc_send_group_unicast()
954 !tipc_dest_find(&tsk->cong_links, node, 0) && in tipc_send_group_unicast()
955 tsk->group && in tipc_send_group_unicast()
956 !tipc_group_cong(tsk->group, node, port, blks, in tipc_send_group_unicast()
962 return -EHOSTUNREACH; in tipc_send_group_unicast()
970 * tipc_send_group_anycast - send message to any member with given identity
982 DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name); in tipc_send_group_anycast()
983 struct sock *sk = sock->sk; in tipc_send_group_anycast()
985 struct list_head *cong_links = &tsk->cong_links; in tipc_send_group_anycast()
987 struct tipc_msg *hdr = &tsk->phdr; in tipc_send_group_anycast()
1001 inst = dest->addr.name.name.instance; in tipc_send_group_anycast()
1005 exclude = tipc_group_exclude(tsk->group); in tipc_send_group_anycast()
1009 /* Look for a non-congested destination member, if any */ in tipc_send_group_anycast()
1013 return -EHOSTUNREACH; in tipc_send_group_anycast()
1015 cong = tipc_group_cong(tsk->group, node, port, blks, in tipc_send_group_anycast()
1035 tsk->group && in tipc_send_group_anycast()
1036 !tipc_group_cong(tsk->group, node, port, in tipc_send_group_anycast()
1047 return -EHOSTUNREACH; in tipc_send_group_anycast()
1055 * tipc_send_group_bcast - send message to all members in communication group
1067 DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name); in tipc_send_group_bcast()
1068 struct sock *sk = sock->sk; in tipc_send_group_bcast()
1072 struct tipc_mc_method *method = &tsk->mc_method; in tipc_send_group_bcast()
1073 bool ack = method->mandatory && method->rcast; in tipc_send_group_bcast()
1075 struct tipc_msg *hdr = &tsk->phdr; in tipc_send_group_bcast()
1078 int rc = -EHOSTUNREACH; in tipc_send_group_bcast()
1082 !tsk->cong_link_cnt && tsk->group && in tipc_send_group_bcast()
1083 !tipc_group_bc_cong(tsk->group, blks)); in tipc_send_group_bcast()
1087 dsts = tipc_group_dests(tsk->group); in tipc_send_group_bcast()
1088 if (!dsts->local && !dsts->remote) in tipc_send_group_bcast()
1089 return -EHOSTUNREACH; in tipc_send_group_bcast()
1094 msg_set_nameinst(hdr, dest->addr.name.name.instance); in tipc_send_group_bcast()
1102 msg_set_grp_bc_seqno(hdr, tipc_group_bc_snd_nxt(tsk->group)); in tipc_send_group_bcast()
1114 rc = tipc_mcast_xmit(net, &pkts, method, dsts, &tsk->cong_link_cnt); in tipc_send_group_bcast()
1119 tipc_group_update_bc_members(tsk->group, blks, ack); in tipc_send_group_bcast()
1122 method->mandatory = false; in tipc_send_group_bcast()
1123 method->expires = jiffies; in tipc_send_group_bcast()
1129 * tipc_send_group_mcast - send message to all members with given identity
1141 struct sock *sk = sock->sk; in tipc_send_group_mcast()
1142 DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name); in tipc_send_group_mcast()
1144 struct tipc_group *grp = tsk->group; in tipc_send_group_mcast()
1145 struct tipc_msg *hdr = &tsk->phdr; in tipc_send_group_mcast()
1154 inst = dest->addr.name.name.instance; in tipc_send_group_mcast()
1160 return -EHOSTUNREACH; in tipc_send_group_mcast()
1163 tipc_dest_pop(&dsts, &dest->addr.id.node, &dest->addr.id.ref); in tipc_send_group_mcast()
1172 * tipc_sk_mcast_rcv - Deliver multicast messages to all destination sockets
1176 * Multi-threaded: parallel calls with reference to same queues may occur
1194 skb = tipc_skb_peek(arrvq, &inputq->lock); in tipc_sk_mcast_rcv()
1195 for (; skb; skb = tipc_skb_peek(arrvq, &inputq->lock)) { in tipc_sk_mcast_rcv()
1204 spin_lock_bh(&inputq->lock); in tipc_sk_mcast_rcv()
1210 spin_unlock_bh(&inputq->lock); in tipc_sk_mcast_rcv()
1246 spin_lock_bh(&inputq->lock); in tipc_sk_mcast_rcv()
1254 spin_unlock_bh(&inputq->lock); in tipc_sk_mcast_rcv()
1266 struct sk_buff_head *txq = &tsk->sk.sk_write_queue; in tipc_sk_push_backlog()
1268 struct net *net = sock_net(&tsk->sk); in tipc_sk_push_backlog()
1273 tsk->pkt_cnt += skb_queue_len(txq); in tipc_sk_push_backlog()
1274 if (!tsk->pkt_cnt || tsk->msg_acc / tsk->pkt_cnt < 2) { in tipc_sk_push_backlog()
1275 tsk->oneway = 0; in tipc_sk_push_backlog()
1276 if (tsk->nagle_start < NAGLE_START_MAX) in tipc_sk_push_backlog()
1277 tsk->nagle_start *= 2; in tipc_sk_push_backlog()
1278 tsk->expect_ack = false; in tipc_sk_push_backlog()
1279 pr_debug("tsk %10u: bad nagle %u -> %u, next start %u!\n", in tipc_sk_push_backlog()
1280 tsk->portid, tsk->msg_acc, tsk->pkt_cnt, in tipc_sk_push_backlog()
1281 tsk->nagle_start); in tipc_sk_push_backlog()
1283 tsk->nagle_start = NAGLE_START_INIT; in tipc_sk_push_backlog()
1286 tsk->expect_ack = true; in tipc_sk_push_backlog()
1288 tsk->expect_ack = false; in tipc_sk_push_backlog()
1291 tsk->msg_acc = 0; in tipc_sk_push_backlog()
1292 tsk->pkt_cnt = 0; in tipc_sk_push_backlog()
1295 if (!skb || tsk->cong_link_cnt) in tipc_sk_push_backlog()
1302 if (tsk->msg_acc) in tipc_sk_push_backlog()
1303 tsk->pkt_cnt += skb_queue_len(txq); in tipc_sk_push_backlog()
1304 tsk->snt_unacked += tsk->snd_backlog; in tipc_sk_push_backlog()
1305 tsk->snd_backlog = 0; in tipc_sk_push_backlog()
1306 rc = tipc_node_xmit(net, txq, dnode, tsk->portid); in tipc_sk_push_backlog()
1307 if (rc == -ELINKCONG) in tipc_sk_push_backlog()
1308 tsk->cong_link_cnt = 1; in tipc_sk_push_backlog()
1312 * tipc_sk_conn_proto_rcv - receive a connection mng protocol message
1322 struct sock *sk = &tsk->sk; in tipc_sk_conn_proto_rcv()
1336 sk->sk_state_change(sk); in tipc_sk_conn_proto_rcv()
1339 * - convert msg to abort msg and add to inqueue in tipc_sk_conn_proto_rcv()
1349 tsk->probe_unacked = false; in tipc_sk_conn_proto_rcv()
1359 tsk->snt_unacked -= msg_conn_ack(hdr); in tipc_sk_conn_proto_rcv()
1360 if (tsk->peer_caps & TIPC_BLOCK_FLOWCTL) in tipc_sk_conn_proto_rcv()
1361 tsk->snd_win = msg_adv_win(hdr); in tipc_sk_conn_proto_rcv()
1363 sk->sk_write_space(sk); in tipc_sk_conn_proto_rcv()
1372 * tipc_sendmsg - send message in connectionless manner
1387 struct sock *sk = sock->sk; in tipc_sendmsg()
1399 struct sock *sk = sock->sk; in __tipc_sendmsg()
1402 DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name); in __tipc_sendmsg()
1403 long timeout = sock_sndtimeo(sk, m->msg_flags & MSG_DONTWAIT); in __tipc_sendmsg()
1404 struct list_head *clinks = &tsk->cong_links; in __tipc_sendmsg()
1406 struct tipc_group *grp = tsk->group; in __tipc_sendmsg()
1407 struct tipc_msg *hdr = &tsk->phdr; in __tipc_sendmsg()
1415 return -EMSGSIZE; in __tipc_sendmsg()
1418 if (unlikely(m->msg_namelen < sizeof(*dest))) in __tipc_sendmsg()
1419 return -EINVAL; in __tipc_sendmsg()
1420 if (unlikely(dest->family != AF_TIPC)) in __tipc_sendmsg()
1421 return -EINVAL; in __tipc_sendmsg()
1427 if (dest->addrtype == TIPC_ADDR_NAME) in __tipc_sendmsg()
1429 if (dest->addrtype == TIPC_ADDR_ID) in __tipc_sendmsg()
1431 if (dest->addrtype == TIPC_ADDR_MCAST) in __tipc_sendmsg()
1433 return -EINVAL; in __tipc_sendmsg()
1437 dest = &tsk->peer; in __tipc_sendmsg()
1438 if (!syn && dest->family != AF_TIPC) in __tipc_sendmsg()
1439 return -EDESTADDRREQ; in __tipc_sendmsg()
1443 if (sk->sk_state == TIPC_LISTEN) in __tipc_sendmsg()
1444 return -EPIPE; in __tipc_sendmsg()
1445 if (sk->sk_state != TIPC_OPEN) in __tipc_sendmsg()
1446 return -EISCONN; in __tipc_sendmsg()
1447 if (tsk->published) in __tipc_sendmsg()
1448 return -EOPNOTSUPP; in __tipc_sendmsg()
1449 if (dest->addrtype == TIPC_ADDR_NAME) { in __tipc_sendmsg()
1450 tsk->conn_type = dest->addr.name.name.type; in __tipc_sendmsg()
1451 tsk->conn_instance = dest->addr.name.name.instance; in __tipc_sendmsg()
1456 seq = &dest->addr.nameseq; in __tipc_sendmsg()
1457 if (dest->addrtype == TIPC_ADDR_MCAST) in __tipc_sendmsg()
1460 if (dest->addrtype == TIPC_ADDR_NAME) { in __tipc_sendmsg()
1461 type = dest->addr.name.name.type; in __tipc_sendmsg()
1462 inst = dest->addr.name.name.instance; in __tipc_sendmsg()
1463 dnode = dest->addr.name.domain; in __tipc_sendmsg()
1466 return -EHOSTUNREACH; in __tipc_sendmsg()
1467 } else if (dest->addrtype == TIPC_ADDR_ID) { in __tipc_sendmsg()
1468 dnode = dest->addr.id.node; in __tipc_sendmsg()
1470 return -EINVAL; in __tipc_sendmsg()
1479 if (dest->addrtype == TIPC_ADDR_NAME) { in __tipc_sendmsg()
1491 msg_set_destport(hdr, dest->addr.id.ref); in __tipc_sendmsg()
1496 mtu = tipc_node_get_mtu(net, dnode, tsk->portid, true); in __tipc_sendmsg()
1500 if (unlikely(syn && !tipc_msg_skb_clone(&pkts, &sk->sk_write_queue))) { in __tipc_sendmsg()
1502 return -ENOMEM; in __tipc_sendmsg()
1506 rc = tipc_node_xmit(net, &pkts, dnode, tsk->portid); in __tipc_sendmsg()
1507 if (unlikely(rc == -ELINKCONG)) { in __tipc_sendmsg()
1509 tsk->cong_link_cnt++; in __tipc_sendmsg()
1525 * tipc_sendstream - send stream-oriented data
1537 struct sock *sk = sock->sk; in tipc_sendstream()
1549 struct sock *sk = sock->sk; in __tipc_sendstream()
1550 DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name); in __tipc_sendstream()
1551 long timeout = sock_sndtimeo(sk, m->msg_flags & MSG_DONTWAIT); in __tipc_sendstream()
1552 struct sk_buff_head *txq = &sk->sk_write_queue; in __tipc_sendstream()
1554 struct tipc_msg *hdr = &tsk->phdr; in __tipc_sendstream()
1558 int maxnagle = tsk->maxnagle; in __tipc_sendstream()
1559 int maxpkt = tsk->max_pkt; in __tipc_sendstream()
1564 return -EMSGSIZE; in __tipc_sendstream()
1567 if (unlikely(dest && sk->sk_state == TIPC_OPEN)) { in __tipc_sendstream()
1570 tsk->peer_caps = tipc_node_get_capabilities(net, dnode); in __tipc_sendstream()
1571 tsk->snt_unacked = tsk_inc(tsk, dlen + msg_hdr_sz(hdr)); in __tipc_sendstream()
1578 (!tsk->cong_link_cnt && in __tipc_sendstream()
1583 send = min_t(size_t, dlen - sent, TIPC_MAX_USER_MSG_SIZE); in __tipc_sendstream()
1584 blocks = tsk->snd_backlog; in __tipc_sendstream()
1585 if (tsk->oneway++ >= tsk->nagle_start && maxnagle && in __tipc_sendstream()
1591 tsk->msg_acc++; in __tipc_sendstream()
1592 if (blocks <= 64 && tsk->expect_ack) { in __tipc_sendstream()
1593 tsk->snd_backlog = blocks; in __tipc_sendstream()
1597 tsk->pkt_cnt += skb_queue_len(txq); in __tipc_sendstream()
1602 tsk->expect_ack = true; in __tipc_sendstream()
1604 tsk->expect_ack = false; in __tipc_sendstream()
1606 tsk->msg_acc = 0; in __tipc_sendstream()
1607 tsk->pkt_cnt = 0; in __tipc_sendstream()
1617 rc = tipc_node_xmit(net, txq, dnode, tsk->portid); in __tipc_sendstream()
1618 if (unlikely(rc == -ELINKCONG)) { in __tipc_sendstream()
1619 tsk->cong_link_cnt = 1; in __tipc_sendstream()
1623 tsk->snt_unacked += blocks; in __tipc_sendstream()
1624 tsk->snd_backlog = 0; in __tipc_sendstream()
1633 * tipc_send_packet - send a connection-oriented message
1645 return -EMSGSIZE; in tipc_send_packet()
1650 /* tipc_sk_finish_conn - complete the setup of a connection
1655 struct sock *sk = &tsk->sk; in tipc_sk_finish_conn()
1657 struct tipc_msg *msg = &tsk->phdr; in tipc_sk_finish_conn()
1666 sk_reset_timer(sk, &sk->sk_timer, jiffies + CONN_PROBING_INTV); in tipc_sk_finish_conn()
1668 tipc_node_add_conn(net, peer_node, tsk->portid, peer_port); in tipc_sk_finish_conn()
1669 tsk->max_pkt = tipc_node_get_mtu(net, peer_node, tsk->portid, true); in tipc_sk_finish_conn()
1670 tsk->peer_caps = tipc_node_get_capabilities(net, peer_node); in tipc_sk_finish_conn()
1672 __skb_queue_purge(&sk->sk_write_queue); in tipc_sk_finish_conn()
1673 if (tsk->peer_caps & TIPC_BLOCK_FLOWCTL) in tipc_sk_finish_conn()
1677 tsk->rcv_win = FLOWCTL_MSG_WIN; in tipc_sk_finish_conn()
1678 tsk->snd_win = FLOWCTL_MSG_WIN; in tipc_sk_finish_conn()
1682 * tipc_sk_set_orig_addr - capture sender's address for received message
1690 DECLARE_SOCKADDR(struct sockaddr_pair *, srcaddr, m->msg_name); in tipc_sk_set_orig_addr()
1696 srcaddr->sock.family = AF_TIPC; in tipc_sk_set_orig_addr()
1697 srcaddr->sock.addrtype = TIPC_ADDR_ID; in tipc_sk_set_orig_addr()
1698 srcaddr->sock.scope = 0; in tipc_sk_set_orig_addr()
1699 srcaddr->sock.addr.id.ref = msg_origport(hdr); in tipc_sk_set_orig_addr()
1700 srcaddr->sock.addr.id.node = msg_orignode(hdr); in tipc_sk_set_orig_addr()
1701 srcaddr->sock.addr.name.domain = 0; in tipc_sk_set_orig_addr()
1702 m->msg_namelen = sizeof(struct sockaddr_tipc); in tipc_sk_set_orig_addr()
1708 srcaddr->member.family = AF_TIPC; in tipc_sk_set_orig_addr()
1709 srcaddr->member.addrtype = TIPC_ADDR_NAME; in tipc_sk_set_orig_addr()
1710 srcaddr->member.scope = 0; in tipc_sk_set_orig_addr()
1711 srcaddr->member.addr.name.name.type = msg_nametype(hdr); in tipc_sk_set_orig_addr()
1712 srcaddr->member.addr.name.name.instance = TIPC_SKB_CB(skb)->orig_member; in tipc_sk_set_orig_addr()
1713 srcaddr->member.addr.name.domain = 0; in tipc_sk_set_orig_addr()
1714 m->msg_namelen = sizeof(*srcaddr); in tipc_sk_set_orig_addr()
1718 * tipc_sk_anc_data_recv - optionally capture ancillary data for received message
1735 int res; in tipc_sk_anc_data_recv() local
1737 if (likely(m->msg_controllen == 0)) in tipc_sk_anc_data_recv()
1746 res = put_cmsg(m, SOL_TIPC, TIPC_ERRINFO, 8, anc_data); in tipc_sk_anc_data_recv()
1747 if (res) in tipc_sk_anc_data_recv()
1748 return res; in tipc_sk_anc_data_recv()
1751 return -ENOMEM; in tipc_sk_anc_data_recv()
1753 res = put_cmsg(m, SOL_TIPC, TIPC_RETDATA, anc_data[1], in tipc_sk_anc_data_recv()
1755 if (res) in tipc_sk_anc_data_recv()
1756 return res; in tipc_sk_anc_data_recv()
1776 has_name = (tsk->conn_type != 0); in tipc_sk_anc_data_recv()
1777 anc_data[0] = tsk->conn_type; in tipc_sk_anc_data_recv()
1778 anc_data[1] = tsk->conn_instance; in tipc_sk_anc_data_recv()
1779 anc_data[2] = tsk->conn_instance; in tipc_sk_anc_data_recv()
1785 res = put_cmsg(m, SOL_TIPC, TIPC_DESTNAME, 12, anc_data); in tipc_sk_anc_data_recv()
1786 if (res) in tipc_sk_anc_data_recv()
1787 return res; in tipc_sk_anc_data_recv()
1795 struct sock *sk = &tsk->sk; in tipc_sk_build_ack()
1805 tsk->portid, TIPC_OK); in tipc_sk_build_ack()
1809 msg_set_conn_ack(msg, tsk->rcv_unacked); in tipc_sk_build_ack()
1810 tsk->rcv_unacked = 0; in tipc_sk_build_ack()
1813 if (tsk->peer_caps & TIPC_BLOCK_FLOWCTL) { in tipc_sk_build_ack()
1814 tsk->rcv_win = tsk_adv_blocks(tsk->sk.sk_rcvbuf); in tipc_sk_build_ack()
1815 msg_set_adv_win(msg, tsk->rcv_win); in tipc_sk_build_ack()
1828 tipc_node_xmit_skb(sock_net(&tsk->sk), skb, tsk_peer_node(tsk), in tipc_sk_send_ack()
1834 struct sock *sk = sock->sk; in tipc_wait_for_rcvmsg()
1843 if (timeo && skb_queue_empty(&sk->sk_receive_queue)) { in tipc_wait_for_rcvmsg()
1844 if (sk->sk_shutdown & RCV_SHUTDOWN) { in tipc_wait_for_rcvmsg()
1845 err = -ENOTCONN; in tipc_wait_for_rcvmsg()
1856 if (!skb_queue_empty(&sk->sk_receive_queue)) in tipc_wait_for_rcvmsg()
1858 err = -EAGAIN; in tipc_wait_for_rcvmsg()
1874 * tipc_recvmsg - receive packet-oriented message
1887 struct sock *sk = sock->sk; in tipc_recvmsg()
1900 return -EINVAL; in tipc_recvmsg()
1903 if (unlikely(connected && sk->sk_state == TIPC_OPEN)) { in tipc_recvmsg()
1904 rc = -ENOTCONN; in tipc_recvmsg()
1914 skb = skb_peek(&sk->sk_receive_queue); in tipc_recvmsg()
1933 /* Capture data if non-error msg, otherwise just set return value */ in tipc_recvmsg()
1935 int offset = skb_cb->bytes_read; in tipc_recvmsg() local
1937 copy = min_t(int, dlen - offset, buflen); in tipc_recvmsg()
1938 rc = skb_copy_datagram_msg(skb, hlen + offset, m, copy); in tipc_recvmsg()
1941 if (unlikely(offset + copy < dlen)) { in tipc_recvmsg()
1944 skb_cb->bytes_read = offset + copy; in tipc_recvmsg()
1946 m->msg_flags |= MSG_TRUNC; in tipc_recvmsg()
1947 skb_cb->bytes_read = 0; in tipc_recvmsg()
1951 m->msg_flags |= MSG_EOR; in tipc_recvmsg()
1952 skb_cb->bytes_read = 0; in tipc_recvmsg()
1957 if (err != TIPC_CONN_SHUTDOWN && connected && !m->msg_control) { in tipc_recvmsg()
1958 rc = -ECONNRESET; in tipc_recvmsg()
1966 m->msg_flags |= MSG_EOR; in tipc_recvmsg()
1967 m->msg_flags |= MSG_OOB; in tipc_recvmsg()
1976 if (tsk->group && msg_in_group(hdr) && !grp_evt) { in tipc_recvmsg()
1978 tipc_group_update_rcv_win(tsk->group, tsk_blocks(hlen + dlen), in tipc_recvmsg()
1984 if (skb_cb->bytes_read) in tipc_recvmsg()
1993 tsk->rcv_unacked += tsk_inc(tsk, hlen + dlen); in tipc_recvmsg()
1994 if (tsk->rcv_unacked >= tsk->rcv_win / TIPC_ACK_RATE) in tipc_recvmsg()
2002 * tipc_recvstream - receive stream-oriented data
2015 struct sock *sk = sock->sk; in tipc_recvstream()
2021 int offset, required, copy, copied = 0; in tipc_recvstream() local
2027 return -EINVAL; in tipc_recvstream()
2031 if (unlikely(sk->sk_state == TIPC_OPEN)) { in tipc_recvstream()
2032 rc = -ENOTCONN; in tipc_recvstream()
2043 skb = skb_peek(&sk->sk_receive_queue); in tipc_recvstream()
2050 /* Discard any empty non-errored (SYN-) message */ in tipc_recvstream()
2067 offset = skb_cb->bytes_read; in tipc_recvstream()
2068 copy = min_t(int, dlen - offset, buflen - copied); in tipc_recvstream()
2069 rc = skb_copy_datagram_msg(skb, hlen + offset, m, copy); in tipc_recvstream()
2073 offset += copy; in tipc_recvstream()
2074 if (unlikely(offset < dlen)) { in tipc_recvstream()
2076 skb_cb->bytes_read = offset; in tipc_recvstream()
2081 if ((err != TIPC_CONN_SHUTDOWN) && !m->msg_control) in tipc_recvstream()
2082 rc = -ECONNRESET; in tipc_recvstream()
2093 tsk->rcv_unacked += tsk_inc(tsk, hlen + dlen); in tipc_recvstream()
2094 if (tsk->rcv_unacked >= tsk->rcv_win / TIPC_ACK_RATE) in tipc_recvstream()
2101 } while (!skb_queue_empty(&sk->sk_receive_queue) || copied < required); in tipc_recvstream()
2108 * tipc_write_space - wake up thread if port congestion is released
2116 wq = rcu_dereference(sk->sk_wq); in tipc_write_space()
2118 wake_up_interruptible_sync_poll(&wq->wait, EPOLLOUT | in tipc_write_space()
2124 * tipc_data_ready - wake up threads to indicate messages have been received
2132 wq = rcu_dereference(sk->sk_wq); in tipc_data_ready()
2134 wake_up_interruptible_sync_poll(&wq->wait, EPOLLIN | in tipc_data_ready()
2141 __skb_queue_purge(&sk->sk_receive_queue); in tipc_sock_destruct()
2151 struct tipc_group *grp = tsk->group; in tipc_sk_proto_rcv()
2159 tipc_dest_del(&tsk->cong_links, msg_orignode(hdr), 0); in tipc_sk_proto_rcv()
2162 tsk->cong_link_cnt--; in tipc_sk_proto_rcv()
2170 tipc_group_member_evt(tsk->group, &wakeup, &sk->sk_rcvbuf, in tipc_sk_proto_rcv()
2178 sk->sk_write_space(sk); in tipc_sk_proto_rcv()
2184 * tipc_sk_filter_connect - check incoming message for a connection-based socket
2193 struct sock *sk = &tsk->sk; in tipc_sk_filter_connect()
2206 tsk->oneway = 0; in tipc_sk_filter_connect()
2208 switch (sk->sk_state) { in tipc_sk_filter_connect()
2215 msg_set_importance(&tsk->phdr, msg_importance(hdr)); in tipc_sk_filter_connect()
2219 /* Empty ACK-, - wake up sleeping connect() and drop */ in tipc_sk_filter_connect()
2220 sk->sk_state_change(sk); in tipc_sk_filter_connect()
2233 if (skb_queue_empty(&sk->sk_write_queue)) in tipc_sk_filter_connect()
2236 delay %= (tsk->conn_timeout / 4); in tipc_sk_filter_connect()
2238 sk_reset_timer(sk, &sk->sk_timer, jiffies + delay); in tipc_sk_filter_connect()
2252 if (!skb_queue_empty(&sk->sk_write_queue)) in tipc_sk_filter_connect()
2254 /* Accept only connection-based messages sent by peer */ in tipc_sk_filter_connect()
2273 tipc_node_remove_conn(net, pnode, tsk->portid); in tipc_sk_filter_connect()
2274 sk->sk_state_change(sk); in tipc_sk_filter_connect()
2277 pr_err("Unknown sk_state %u\n", sk->sk_state); in tipc_sk_filter_connect()
2281 sk->sk_err = ECONNREFUSED; in tipc_sk_filter_connect()
2282 sk->sk_state_change(sk); in tipc_sk_filter_connect()
2287 * rcvbuf_limit - get proper overload limit of socket receive queue
2310 return READ_ONCE(sk->sk_rcvbuf); in rcvbuf_limit()
2313 return READ_ONCE(sk->sk_rcvbuf) << msg_importance(hdr); in rcvbuf_limit()
2315 if (likely(tsk->peer_caps & TIPC_BLOCK_FLOWCTL)) in rcvbuf_limit()
2316 return READ_ONCE(sk->sk_rcvbuf); in rcvbuf_limit()
2322 * tipc_sk_filter_rcv - validate incoming message
2337 struct tipc_group *grp = tsk->group; in tipc_sk_filter_rcv()
2345 TIPC_SKB_CB(skb)->bytes_read = 0; in tipc_sk_filter_rcv()
2356 tipc_mcast_filter_msg(net, &tsk->mc_method.deferredq, &inputq); in tipc_sk_filter_rcv()
2366 else if (sk_rmem_alloc_get(sk) + skb->truesize >= limit) { in tipc_sk_filter_rcv()
2369 atomic_inc(&sk->sk_drops); in tipc_sk_filter_rcv()
2382 __skb_queue_tail(&sk->sk_receive_queue, skb); in tipc_sk_filter_rcv()
2386 sk->sk_data_ready(sk); in tipc_sk_filter_rcv()
2391 * tipc_sk_backlog_rcv - handle incoming message from backlog queue
2406 added = sk_rmem_alloc_get(sk) - before; in tipc_sk_backlog_rcv()
2407 atomic_add(added, &tipc_sk(sk)->dupl_rcvcnt); in tipc_sk_backlog_rcv()
2415 * tipc_sk_enqueue - extract all buffers with destination 'dport' from
2446 /* Try backlog, compensating for double-counted bytes */ in tipc_sk_enqueue()
2447 dcnt = &tipc_sk(sk)->dupl_rcvcnt; in tipc_sk_enqueue()
2448 if (!sk->sk_backlog.len) in tipc_sk_enqueue()
2460 atomic_inc(&sk->sk_drops); in tipc_sk_enqueue()
2471 * tipc_sk_rcv - handle a chain of incoming buffers
2491 sk = &tsk->sk; in tipc_sk_rcv()
2492 if (likely(spin_trylock_bh(&sk->sk_lock.slock))) { in tipc_sk_rcv()
2494 spin_unlock_bh(&sk->sk_lock.slock); in tipc_sk_rcv()
2525 struct sock *sk = sock->sk; in tipc_wait_for_connect()
2533 return -ETIMEDOUT; in tipc_wait_for_connect()
2536 if (sk->sk_state == TIPC_DISCONNECTING) in tipc_wait_for_connect()
2549 if (addr->family != AF_TIPC) in tipc_sockaddr_is_sane()
2551 if (addr->addrtype == TIPC_SERVICE_RANGE) in tipc_sockaddr_is_sane()
2552 return (addr->addr.nameseq.lower <= addr->addr.nameseq.upper); in tipc_sockaddr_is_sane()
2553 return (addr->addrtype == TIPC_SERVICE_ADDR || in tipc_sockaddr_is_sane()
2554 addr->addrtype == TIPC_SOCKET_ADDR); in tipc_sockaddr_is_sane()
2558 * tipc_connect - establish a connection to another TIPC port
2562 * @flags: file-related flags associated with socket
2569 struct sock *sk = sock->sk; in tipc_connect()
2573 long timeout = (flags & O_NONBLOCK) ? 0 : tsk->conn_timeout; in tipc_connect()
2575 int res = 0; in tipc_connect() local
2578 return -EINVAL; in tipc_connect()
2582 if (tsk->group) { in tipc_connect()
2583 res = -EINVAL; in tipc_connect()
2587 if (dst->family == AF_UNSPEC) { in tipc_connect()
2588 memset(&tsk->peer, 0, sizeof(struct sockaddr_tipc)); in tipc_connect()
2590 res = -EINVAL; in tipc_connect()
2594 res = -EINVAL; in tipc_connect()
2599 memcpy(&tsk->peer, dest, destlen); in tipc_connect()
2601 } else if (dst->addrtype == TIPC_SERVICE_RANGE) { in tipc_connect()
2602 res = -EINVAL; in tipc_connect()
2606 previous = sk->sk_state; in tipc_connect()
2608 switch (sk->sk_state) { in tipc_connect()
2610 /* Send a 'SYN-' to destination */ in tipc_connect()
2614 /* If connect is in non-blocking case, set MSG_DONTWAIT to in tipc_connect()
2620 res = __tipc_sendmsg(sock, &m, 0); in tipc_connect()
2621 if ((res < 0) && (res != -EWOULDBLOCK)) in tipc_connect()
2625 * difference is that return value in non-blocking in tipc_connect()
2628 res = -EINPROGRESS; in tipc_connect()
2633 res = -EALREADY; in tipc_connect()
2638 res = tipc_wait_for_connect(sock, &timeout); in tipc_connect()
2641 res = -EISCONN; in tipc_connect()
2644 res = -EINVAL; in tipc_connect()
2649 return res; in tipc_connect()
2653 * tipc_listen - allow socket to listen for incoming connections
2661 struct sock *sk = sock->sk; in tipc_listen()
2662 int res; in tipc_listen() local
2665 res = tipc_set_sk_state(sk, TIPC_LISTEN); in tipc_listen()
2668 return res; in tipc_listen()
2673 struct sock *sk = sock->sk; in tipc_wait_for_accept()
2677 /* True wake-one mechanism for incoming connections: only in tipc_wait_for_accept()
2683 if (timeo && skb_queue_empty(&sk->sk_receive_queue)) { in tipc_wait_for_accept()
2691 if (!skb_queue_empty(&sk->sk_receive_queue)) in tipc_wait_for_accept()
2693 err = -EAGAIN; in tipc_wait_for_accept()
2704 * tipc_accept - wait for connection request
2707 * @flags: file-related flags associated with socket
2714 struct sock *new_sk, *sk = sock->sk; in tipc_accept()
2720 int res; in tipc_accept() local
2724 if (sk->sk_state != TIPC_LISTEN) { in tipc_accept()
2725 res = -EINVAL; in tipc_accept()
2729 res = tipc_wait_for_accept(sock, timeo); in tipc_accept()
2730 if (res) in tipc_accept()
2733 buf = skb_peek(&sk->sk_receive_queue); in tipc_accept()
2735 res = tipc_sk_create(sock_net(sock->sk), new_sock, 0, kern); in tipc_accept()
2736 if (res) in tipc_accept()
2738 security_sk_clone(sock->sk, new_sock->sk); in tipc_accept()
2740 new_sk = new_sock->sk; in tipc_accept()
2758 new_tsock->conn_type = msg_nametype(msg); in tipc_accept()
2759 new_tsock->conn_instance = msg_nameinst(msg); in tipc_accept()
2763 * Respond to 'SYN-' by discarding it & returning 'ACK'. in tipc_accept()
2769 __skb_dequeue(&sk->sk_receive_queue); in tipc_accept()
2770 __skb_queue_head(&new_sk->sk_receive_queue, buf); in tipc_accept()
2777 return res; in tipc_accept()
2781 * tipc_shutdown - shutdown socket connection
2791 struct sock *sk = sock->sk; in tipc_shutdown()
2792 int res; in tipc_shutdown() local
2795 return -EINVAL; in tipc_shutdown()
2801 sk->sk_shutdown = SHUTDOWN_MASK; in tipc_shutdown()
2803 if (sk->sk_state == TIPC_DISCONNECTING) { in tipc_shutdown()
2805 __skb_queue_purge(&sk->sk_receive_queue); in tipc_shutdown()
2807 res = 0; in tipc_shutdown()
2809 res = -ENOTCONN; in tipc_shutdown()
2812 sk->sk_state_change(sk); in tipc_shutdown()
2815 return res; in tipc_shutdown()
2825 u32 oport = tsk->portid; in tipc_sk_check_probing_state()
2828 if (tsk->probe_unacked) { in tipc_sk_check_probing_state()
2830 sk->sk_err = ECONNABORTED; in tipc_sk_check_probing_state()
2832 sk->sk_state_change(sk); in tipc_sk_check_probing_state()
2840 tsk->probe_unacked = true; in tipc_sk_check_probing_state()
2841 sk_reset_timer(sk, &sk->sk_timer, jiffies + CONN_PROBING_INTV); in tipc_sk_check_probing_state()
2849 if (tsk->cong_link_cnt) { in tipc_sk_retry_connect()
2850 sk_reset_timer(sk, &sk->sk_timer, in tipc_sk_retry_connect()
2855 tipc_msg_skb_clone(&sk->sk_write_queue, list); in tipc_sk_retry_connect()
2871 sk_reset_timer(sk, &sk->sk_timer, jiffies + HZ / 20); in tipc_sk_timeout()
2877 if (sk->sk_state == TIPC_ESTABLISHED) in tipc_sk_timeout()
2879 else if (sk->sk_state == TIPC_CONNECTING) in tipc_sk_timeout()
2885 rc = tipc_node_xmit(sock_net(sk), &list, pnode, tsk->portid); in tipc_sk_timeout()
2888 if (rc == -ELINKCONG) { in tipc_sk_timeout()
2889 tipc_dest_push(&tsk->cong_links, pnode, 0); in tipc_sk_timeout()
2890 tsk->cong_link_cnt = 1; in tipc_sk_timeout()
2898 struct sock *sk = &tsk->sk; in tipc_sk_publish()
2907 return -EINVAL; in tipc_sk_publish()
2908 key = tsk->portid + tsk->pub_count + 1; in tipc_sk_publish()
2909 if (key == tsk->portid) in tipc_sk_publish()
2910 return -EADDRINUSE; in tipc_sk_publish()
2912 publ = tipc_nametbl_publish(net, seq->type, seq->lower, seq->upper, in tipc_sk_publish()
2913 scope, tsk->portid, key); in tipc_sk_publish()
2915 return -EINVAL; in tipc_sk_publish()
2917 list_add(&publ->binding_sock, &tsk->publications); in tipc_sk_publish()
2918 tsk->pub_count++; in tipc_sk_publish()
2919 tsk->published = 1; in tipc_sk_publish()
2926 struct net *net = sock_net(&tsk->sk); in tipc_sk_withdraw()
2929 int rc = -EINVAL; in tipc_sk_withdraw()
2934 list_for_each_entry_safe(publ, safe, &tsk->publications, binding_sock) { in tipc_sk_withdraw()
2936 if (publ->scope != scope) in tipc_sk_withdraw()
2938 if (publ->type != seq->type) in tipc_sk_withdraw()
2940 if (publ->lower != seq->lower) in tipc_sk_withdraw()
2942 if (publ->upper != seq->upper) in tipc_sk_withdraw()
2944 tipc_nametbl_withdraw(net, publ->type, publ->lower, in tipc_sk_withdraw()
2945 publ->upper, publ->key); in tipc_sk_withdraw()
2949 tipc_nametbl_withdraw(net, publ->type, publ->lower, in tipc_sk_withdraw()
2950 publ->upper, publ->key); in tipc_sk_withdraw()
2953 if (list_empty(&tsk->publications)) in tipc_sk_withdraw()
2954 tsk->published = 0; in tipc_sk_withdraw()
2958 /* tipc_sk_reinit: set non-zero address in all existing sockets
2968 rhashtable_walk_enter(&tn->sk_rht, &iter); in tipc_sk_reinit()
2974 sock_hold(&tsk->sk); in tipc_sk_reinit()
2976 lock_sock(&tsk->sk); in tipc_sk_reinit()
2977 msg = &tsk->phdr; in tipc_sk_reinit()
2980 release_sock(&tsk->sk); in tipc_sk_reinit()
2982 sock_put(&tsk->sk); in tipc_sk_reinit()
2986 } while (tsk == ERR_PTR(-EAGAIN)); in tipc_sk_reinit()
2997 tsk = rhashtable_lookup(&tn->sk_rht, &portid, tsk_rht_params); in tipc_sk_lookup()
2999 sock_hold(&tsk->sk); in tipc_sk_lookup()
3007 struct sock *sk = &tsk->sk; in tipc_sk_insert()
3010 u32 remaining = (TIPC_MAX_PORT - TIPC_MIN_PORT) + 1; in tipc_sk_insert()
3013 while (remaining--) { in tipc_sk_insert()
3017 tsk->portid = portid; in tipc_sk_insert()
3018 sock_hold(&tsk->sk); in tipc_sk_insert()
3019 if (!rhashtable_lookup_insert_fast(&tn->sk_rht, &tsk->node, in tipc_sk_insert()
3022 sock_put(&tsk->sk); in tipc_sk_insert()
3025 return -1; in tipc_sk_insert()
3030 struct sock *sk = &tsk->sk; in tipc_sk_remove()
3033 if (!rhashtable_remove_fast(&tn->sk_rht, &tsk->node, tsk_rht_params)) { in tipc_sk_remove()
3034 WARN_ON(refcount_read(&sk->sk_refcnt) == 1); in tipc_sk_remove()
3053 return rhashtable_init(&tn->sk_rht, &tsk_rht_params); in tipc_sk_rht_init()
3063 rhashtable_destroy(&tn->sk_rht); in tipc_sk_rht_destroy()
3068 struct net *net = sock_net(&tsk->sk); in tipc_sk_join()
3069 struct tipc_group *grp = tsk->group; in tipc_sk_join()
3070 struct tipc_msg *hdr = &tsk->phdr; in tipc_sk_join()
3074 if (mreq->type < TIPC_RESERVED_TYPES) in tipc_sk_join()
3075 return -EACCES; in tipc_sk_join()
3076 if (mreq->scope > TIPC_NODE_SCOPE) in tipc_sk_join()
3077 return -EINVAL; in tipc_sk_join()
3079 return -EACCES; in tipc_sk_join()
3080 grp = tipc_group_create(net, tsk->portid, mreq, &tsk->group_is_open); in tipc_sk_join()
3082 return -ENOMEM; in tipc_sk_join()
3083 tsk->group = grp; in tipc_sk_join()
3084 msg_set_lookup_scope(hdr, mreq->scope); in tipc_sk_join()
3085 msg_set_nametype(hdr, mreq->type); in tipc_sk_join()
3087 seq.type = mreq->type; in tipc_sk_join()
3088 seq.lower = mreq->instance; in tipc_sk_join()
3090 tipc_nametbl_build_group(net, grp, mreq->type, mreq->scope); in tipc_sk_join()
3091 rc = tipc_sk_publish(tsk, mreq->scope, &seq); in tipc_sk_join()
3094 tsk->group = NULL; in tipc_sk_join()
3098 tsk->mc_method.rcast = true; in tipc_sk_join()
3099 tsk->mc_method.mandatory = true; in tipc_sk_join()
3100 tipc_group_join(net, grp, &tsk->sk.sk_rcvbuf); in tipc_sk_join()
3106 struct net *net = sock_net(&tsk->sk); in tipc_sk_leave()
3107 struct tipc_group *grp = tsk->group; in tipc_sk_leave()
3112 return -EINVAL; in tipc_sk_leave()
3115 tsk->group = NULL; in tipc_sk_leave()
3121 * tipc_setsockopt - set socket option
3125 * @ov: pointer to new option value
3126 * @ol: length of option value
3136 struct sock *sk = sock->sk; in tipc_setsockopt()
3139 u32 value = 0; in tipc_setsockopt() local
3140 int res = 0; in tipc_setsockopt() local
3142 if ((lvl == IPPROTO_TCP) && (sock->type == SOCK_STREAM)) in tipc_setsockopt()
3145 return -ENOPROTOOPT; in tipc_setsockopt()
3153 if (ol < sizeof(value)) in tipc_setsockopt()
3154 return -EINVAL; in tipc_setsockopt()
3155 if (copy_from_sockptr(&value, ov, sizeof(u32))) in tipc_setsockopt()
3156 return -EFAULT; in tipc_setsockopt()
3160 return -EINVAL; in tipc_setsockopt()
3162 return -EFAULT; in tipc_setsockopt()
3166 return -EINVAL; in tipc_setsockopt()
3173 res = tsk_set_importance(sk, value); in tipc_setsockopt()
3176 if (sock->type != SOCK_STREAM) in tipc_setsockopt()
3177 tsk_set_unreliable(tsk, value); in tipc_setsockopt()
3179 res = -ENOPROTOOPT; in tipc_setsockopt()
3182 tsk_set_unreturnable(tsk, value); in tipc_setsockopt()
3185 tipc_sk(sk)->conn_timeout = value; in tipc_setsockopt()
3188 tsk->mc_method.rcast = false; in tipc_setsockopt()
3189 tsk->mc_method.mandatory = true; in tipc_setsockopt()
3192 tsk->mc_method.rcast = true; in tipc_setsockopt()
3193 tsk->mc_method.mandatory = true; in tipc_setsockopt()
3196 res = tipc_sk_join(tsk, &mreq); in tipc_setsockopt()
3199 res = tipc_sk_leave(tsk); in tipc_setsockopt()
3202 tsk->nodelay = !!value; in tipc_setsockopt()
3206 res = -EINVAL; in tipc_setsockopt()
3211 return res; in tipc_setsockopt()
3215 * tipc_getsockopt - get socket option
3219 * @ov: receptacle for option value
3220 * @ol: receptacle for length of option value
3230 struct sock *sk = sock->sk; in tipc_getsockopt()
3234 u32 value; in tipc_getsockopt() local
3235 int res; in tipc_getsockopt() local
3237 if ((lvl == IPPROTO_TCP) && (sock->type == SOCK_STREAM)) in tipc_getsockopt()
3240 return -ENOPROTOOPT; in tipc_getsockopt()
3241 res = get_user(len, ol); in tipc_getsockopt()
3242 if (res) in tipc_getsockopt()
3243 return res; in tipc_getsockopt()
3249 value = tsk_importance(tsk); in tipc_getsockopt()
3252 value = tsk_unreliable(tsk); in tipc_getsockopt()
3255 value = tsk_unreturnable(tsk); in tipc_getsockopt()
3258 value = tsk->conn_timeout; in tipc_getsockopt()
3259 /* no need to set "res", since already 0 at this point */ in tipc_getsockopt()
3262 value = 0; /* was tipc_queue_size, now obsolete */ in tipc_getsockopt()
3265 value = skb_queue_len(&sk->sk_receive_queue); in tipc_getsockopt()
3268 value = sk_rmem_alloc_get(sk); in tipc_getsockopt()
3272 if (tsk->group) in tipc_getsockopt()
3273 tipc_group_self(tsk->group, &seq, &scope); in tipc_getsockopt()
3274 value = seq.type; in tipc_getsockopt()
3277 res = -EINVAL; in tipc_getsockopt()
3282 if (res) in tipc_getsockopt()
3283 return res; /* "get" failed */ in tipc_getsockopt()
3285 if (len < sizeof(value)) in tipc_getsockopt()
3286 return -EINVAL; in tipc_getsockopt()
3288 if (copy_to_user(ov, &value, sizeof(value))) in tipc_getsockopt()
3289 return -EFAULT; in tipc_getsockopt()
3291 return put_user(sizeof(value), ol); in tipc_getsockopt()
3296 struct net *net = sock_net(sock->sk); in tipc_ioctl()
3304 return -EFAULT; in tipc_ioctl()
3309 return -EFAULT; in tipc_ioctl()
3312 return -EADDRNOTAVAIL; in tipc_ioctl()
3315 return -EFAULT; in tipc_ioctl()
3317 return -EADDRNOTAVAIL; in tipc_ioctl()
3319 return -EFAULT; in tipc_ioctl()
3322 return -ENOIOCTLCMD; in tipc_ioctl()
3328 struct tipc_sock *tsk2 = tipc_sk(sock2->sk); in tipc_socketpair()
3329 struct tipc_sock *tsk1 = tipc_sk(sock1->sk); in tipc_socketpair()
3330 u32 onode = tipc_own_addr(sock_net(sock1->sk)); in tipc_socketpair()
3332 tsk1->peer.family = AF_TIPC; in tipc_socketpair()
3333 tsk1->peer.addrtype = TIPC_ADDR_ID; in tipc_socketpair()
3334 tsk1->peer.scope = TIPC_NODE_SCOPE; in tipc_socketpair()
3335 tsk1->peer.addr.id.ref = tsk2->portid; in tipc_socketpair()
3336 tsk1->peer.addr.id.node = onode; in tipc_socketpair()
3337 tsk2->peer.family = AF_TIPC; in tipc_socketpair()
3338 tsk2->peer.addrtype = TIPC_ADDR_ID; in tipc_socketpair()
3339 tsk2->peer.scope = TIPC_NODE_SCOPE; in tipc_socketpair()
3340 tsk2->peer.addr.id.ref = tsk1->portid; in tipc_socketpair()
3341 tsk2->peer.addr.id.node = onode; in tipc_socketpair()
3343 tipc_sk_finish_conn(tsk1, tsk2->portid, onode); in tipc_socketpair()
3344 tipc_sk_finish_conn(tsk2, tsk1->portid, onode); in tipc_socketpair()
3427 * tipc_socket_init - initialize TIPC socket interface
3433 int res; in tipc_socket_init() local
3435 res = proto_register(&tipc_proto, 1); in tipc_socket_init()
3436 if (res) { in tipc_socket_init()
3441 res = sock_register(&tipc_family_ops); in tipc_socket_init()
3442 if (res) { in tipc_socket_init()
3448 return res; in tipc_socket_init()
3452 * tipc_socket_stop - stop TIPC socket interface
3472 return -EMSGSIZE; in __tipc_nl_add_sk_con()
3479 if (tsk->conn_type != 0) { in __tipc_nl_add_sk_con()
3482 if (nla_put_u32(skb, TIPC_NLA_CON_TYPE, tsk->conn_type)) in __tipc_nl_add_sk_con()
3484 if (nla_put_u32(skb, TIPC_NLA_CON_INST, tsk->conn_instance)) in __tipc_nl_add_sk_con()
3494 return -EMSGSIZE; in __tipc_nl_add_sk_con()
3500 struct net *net = sock_net(skb->sk); in __tipc_nl_add_sk_info()
3501 struct sock *sk = &tsk->sk; in __tipc_nl_add_sk_info()
3503 if (nla_put_u32(skb, TIPC_NLA_SOCK_REF, tsk->portid) || in __tipc_nl_add_sk_info()
3505 return -EMSGSIZE; in __tipc_nl_add_sk_info()
3509 return -EMSGSIZE; in __tipc_nl_add_sk_info()
3510 } else if (!list_empty(&tsk->publications)) { in __tipc_nl_add_sk_info()
3512 return -EMSGSIZE; in __tipc_nl_add_sk_info()
3524 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, in __tipc_nl_add_sk()
3546 return -EMSGSIZE; in __tipc_nl_add_sk()
3554 struct rhashtable_iter *iter = (void *)cb->args[4]; in tipc_nl_sk_walk()
3562 if (err == -EAGAIN) { in tipc_nl_sk_walk()
3569 sock_hold(&tsk->sk); in tipc_nl_sk_walk()
3571 lock_sock(&tsk->sk); in tipc_nl_sk_walk()
3574 release_sock(&tsk->sk); in tipc_nl_sk_walk()
3575 sock_put(&tsk->sk); in tipc_nl_sk_walk()
3578 release_sock(&tsk->sk); in tipc_nl_sk_walk()
3580 sock_put(&tsk->sk); in tipc_nl_sk_walk()
3584 return skb->len; in tipc_nl_sk_walk()
3590 return __tipc_dump_start(cb, sock_net(cb->skb->sk)); in tipc_dump_start()
3596 /* tipc_nl_name_table_dump() uses cb->args[0...3]. */ in __tipc_dump_start()
3597 struct rhashtable_iter *iter = (void *)cb->args[4]; in __tipc_dump_start()
3603 return -ENOMEM; in __tipc_dump_start()
3605 cb->args[4] = (long)iter; in __tipc_dump_start()
3608 rhashtable_walk_enter(&tn->sk_rht, iter); in __tipc_dump_start()
3614 struct rhashtable_iter *hti = (void *)cb->args[4]; in tipc_dump_done()
3626 struct sock *sk = &tsk->sk; in tipc_sk_fill_sock_diag()
3631 if (!(sk_filter_state & (1 << sk->sk_state))) in tipc_sk_fill_sock_diag()
3641 if (nla_put_u32(skb, TIPC_NLA_SOCK_TYPE, (u32)sk->sk_type) || in tipc_sk_fill_sock_diag()
3642 nla_put_u32(skb, TIPC_NLA_SOCK_TIPC_STATE, (u32)sk->sk_state) || in tipc_sk_fill_sock_diag()
3645 from_kuid_munged(sk_user_ns(NETLINK_CB(cb->skb).sk), in tipc_sk_fill_sock_diag()
3657 skb_queue_len(&sk->sk_receive_queue)) || in tipc_sk_fill_sock_diag()
3659 skb_queue_len(&sk->sk_write_queue)) || in tipc_sk_fill_sock_diag()
3661 atomic_read(&sk->sk_drops))) in tipc_sk_fill_sock_diag()
3664 if (tsk->cong_link_cnt && in tipc_sk_fill_sock_diag()
3674 if (tsk->group) in tipc_sk_fill_sock_diag()
3675 if (tipc_group_fill_sock_diag(tsk->group, skb)) in tipc_sk_fill_sock_diag()
3687 return -EMSGSIZE; in tipc_sk_fill_sock_diag()
3704 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, in __tipc_nl_add_sk_publ()
3713 if (nla_put_u32(skb, TIPC_NLA_PUBL_KEY, publ->key)) in __tipc_nl_add_sk_publ()
3715 if (nla_put_u32(skb, TIPC_NLA_PUBL_TYPE, publ->type)) in __tipc_nl_add_sk_publ()
3717 if (nla_put_u32(skb, TIPC_NLA_PUBL_LOWER, publ->lower)) in __tipc_nl_add_sk_publ()
3719 if (nla_put_u32(skb, TIPC_NLA_PUBL_UPPER, publ->upper)) in __tipc_nl_add_sk_publ()
3732 return -EMSGSIZE; in __tipc_nl_add_sk_publ()
3744 list_for_each_entry(p, &tsk->publications, binding_sock) { in __tipc_nl_list_sk_publ()
3745 if (p->key == *last_publ) in __tipc_nl_list_sk_publ()
3748 if (list_entry_is_head(p, &tsk->publications, binding_sock)) { in __tipc_nl_list_sk_publ()
3755 cb->prev_seq = 1; in __tipc_nl_list_sk_publ()
3757 return -EPIPE; in __tipc_nl_list_sk_publ()
3760 p = list_first_entry(&tsk->publications, struct publication, in __tipc_nl_list_sk_publ()
3764 list_for_each_entry_from(p, &tsk->publications, binding_sock) { in __tipc_nl_list_sk_publ()
3767 *last_publ = p->key; in __tipc_nl_list_sk_publ()
3779 u32 tsk_portid = cb->args[0]; in tipc_nl_publ_dump()
3780 u32 last_publ = cb->args[1]; in tipc_nl_publ_dump()
3781 u32 done = cb->args[2]; in tipc_nl_publ_dump()
3782 struct net *net = sock_net(skb->sk); in tipc_nl_publ_dump()
3786 struct nlattr **attrs = genl_dumpit_info(cb)->attrs; in tipc_nl_publ_dump()
3790 return -EINVAL; in tipc_nl_publ_dump()
3799 return -EINVAL; in tipc_nl_publ_dump()
3809 return -EINVAL; in tipc_nl_publ_dump()
3811 lock_sock(&tsk->sk); in tipc_nl_publ_dump()
3815 release_sock(&tsk->sk); in tipc_nl_publ_dump()
3816 sock_put(&tsk->sk); in tipc_nl_publ_dump()
3818 cb->args[0] = tsk_portid; in tipc_nl_publ_dump()
3819 cb->args[1] = last_publ; in tipc_nl_publ_dump()
3820 cb->args[2] = done; in tipc_nl_publ_dump()
3822 return skb->len; in tipc_nl_publ_dump()
3826 * tipc_sk_filtering - check if a socket should be traced
3832 * (value 0 = 'any') or when there is no tuple set (all = 0),
3857 return (_port == tsk->portid); in tipc_sk_filtering()
3859 if (_sktype && _sktype != sk->sk_type) in tipc_sk_filtering()
3862 if (tsk->published) { in tipc_sk_filtering()
3863 p = list_first_entry_or_null(&tsk->publications, in tipc_sk_filtering()
3866 type = p->type; in tipc_sk_filtering()
3867 lower = p->lower; in tipc_sk_filtering()
3868 upper = p->upper; in tipc_sk_filtering()
3873 type = tsk->conn_type; in tipc_sk_filtering()
3874 lower = tsk->conn_instance; in tipc_sk_filtering()
3875 upper = tsk->conn_instance; in tipc_sk_filtering()
3887 return (sk) ? (tipc_sk(sk))->portid : 0; in tipc_sock_get_portid()
3891 * tipc_sk_overlimit1 - check if socket rx queue is about to be overloaded,
3901 atomic_t *dcnt = &tipc_sk(sk)->dupl_rcvcnt; in tipc_sk_overlimit1()
3903 unsigned int qsize = sk->sk_backlog.len + sk_rmem_alloc_get(sk); in tipc_sk_overlimit1()
3909 * tipc_sk_overlimit2 - check if socket rx queue is about to be overloaded,
3926 * tipc_sk_dump - dump TIPC socket
3929 * - TIPC_DUMP_NONE: don't dump socket queues
3930 * - TIPC_DUMP_SK_SNDQ: dump socket send queue
3931 * - TIPC_DUMP_SK_RCVQ: dump socket rcv queue
3932 * - TIPC_DUMP_SK_BKLGQ: dump socket backlog queue
3933 * - TIPC_DUMP_ALL: dump all the socket queues above
3952 i += scnprintf(buf, sz, "sk data: %u", sk->sk_type); in tipc_sk_dump()
3953 i += scnprintf(buf + i, sz - i, " %d", sk->sk_state); in tipc_sk_dump()
3954 i += scnprintf(buf + i, sz - i, " %x", tsk_own_node(tsk)); in tipc_sk_dump()
3955 i += scnprintf(buf + i, sz - i, " %u", tsk->portid); in tipc_sk_dump()
3956 i += scnprintf(buf + i, sz - i, " | %u", tsk_connected); in tipc_sk_dump()
3958 i += scnprintf(buf + i, sz - i, " %x", tsk_peer_node(tsk)); in tipc_sk_dump()
3959 i += scnprintf(buf + i, sz - i, " %u", tsk_peer_port(tsk)); in tipc_sk_dump()
3960 i += scnprintf(buf + i, sz - i, " %u", tsk->conn_type); in tipc_sk_dump()
3961 i += scnprintf(buf + i, sz - i, " %u", tsk->conn_instance); in tipc_sk_dump()
3963 i += scnprintf(buf + i, sz - i, " | %u", tsk->published); in tipc_sk_dump()
3964 if (tsk->published) { in tipc_sk_dump()
3965 p = list_first_entry_or_null(&tsk->publications, in tipc_sk_dump()
3967 i += scnprintf(buf + i, sz - i, " %u", (p) ? p->type : 0); in tipc_sk_dump()
3968 i += scnprintf(buf + i, sz - i, " %u", (p) ? p->lower : 0); in tipc_sk_dump()
3969 i += scnprintf(buf + i, sz - i, " %u", (p) ? p->upper : 0); in tipc_sk_dump()
3971 i += scnprintf(buf + i, sz - i, " | %u", tsk->snd_win); in tipc_sk_dump()
3972 i += scnprintf(buf + i, sz - i, " %u", tsk->rcv_win); in tipc_sk_dump()
3973 i += scnprintf(buf + i, sz - i, " %u", tsk->max_pkt); in tipc_sk_dump()
3974 i += scnprintf(buf + i, sz - i, " %x", tsk->peer_caps); in tipc_sk_dump()
3975 i += scnprintf(buf + i, sz - i, " %u", tsk->cong_link_cnt); in tipc_sk_dump()
3976 i += scnprintf(buf + i, sz - i, " %u", tsk->snt_unacked); in tipc_sk_dump()
3977 i += scnprintf(buf + i, sz - i, " %u", tsk->rcv_unacked); in tipc_sk_dump()
3978 i += scnprintf(buf + i, sz - i, " %u", atomic_read(&tsk->dupl_rcvcnt)); in tipc_sk_dump()
3979 i += scnprintf(buf + i, sz - i, " %u", sk->sk_shutdown); in tipc_sk_dump()
3980 i += scnprintf(buf + i, sz - i, " | %d", sk_wmem_alloc_get(sk)); in tipc_sk_dump()
3981 i += scnprintf(buf + i, sz - i, " %d", sk->sk_sndbuf); in tipc_sk_dump()
3982 i += scnprintf(buf + i, sz - i, " | %d", sk_rmem_alloc_get(sk)); in tipc_sk_dump()
3983 i += scnprintf(buf + i, sz - i, " %d", sk->sk_rcvbuf); in tipc_sk_dump()
3984 i += scnprintf(buf + i, sz - i, " | %d\n", READ_ONCE(sk->sk_backlog.len)); in tipc_sk_dump()
3987 i += scnprintf(buf + i, sz - i, "sk_write_queue: "); in tipc_sk_dump()
3988 i += tipc_list_dump(&sk->sk_write_queue, false, buf + i); in tipc_sk_dump()
3992 i += scnprintf(buf + i, sz - i, "sk_receive_queue: "); in tipc_sk_dump()
3993 i += tipc_list_dump(&sk->sk_receive_queue, false, buf + i); in tipc_sk_dump()
3997 i += scnprintf(buf + i, sz - i, "sk_backlog:\n head "); in tipc_sk_dump()
3998 i += tipc_skb_dump(sk->sk_backlog.head, false, buf + i); in tipc_sk_dump()
3999 if (sk->sk_backlog.tail != sk->sk_backlog.head) { in tipc_sk_dump()
4000 i += scnprintf(buf + i, sz - i, " tail "); in tipc_sk_dump()
4001 i += tipc_skb_dump(sk->sk_backlog.tail, false, in tipc_sk_dump()