Lines Matching +full:- +full:l
4 * Copyright (c) 1996-2007, 2012-2016, Ericsson AB
5 * Copyright (c) 2004-2007, 2010-2013, Wind River Systems
82 * struct tipc_link - TIPC link data structure
244 static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb,
246 static void tipc_link_build_proto_msg(struct tipc_link *l, int mtyp, bool probe,
250 static void link_print(struct tipc_link *l, const char *str);
251 static int tipc_link_build_nack_msg(struct tipc_link *l,
253 static void tipc_link_build_bc_init_msg(struct tipc_link *l,
256 struct tipc_link *l, u8 start_index);
257 static u16 tipc_build_gap_ack_blks(struct tipc_link *l, struct tipc_msg *hdr);
258 static int tipc_link_advance_transmq(struct tipc_link *l, struct tipc_link *r,
263 static void tipc_link_update_cwin(struct tipc_link *l, int released,
266 * Simple non-static link routines (i.e. referenced outside this file)
268 bool tipc_link_is_up(struct tipc_link *l) in tipc_link_is_up() argument
270 return l->state & (LINK_ESTABLISHED | LINK_SYNCHING); in tipc_link_is_up()
273 bool tipc_link_peer_is_down(struct tipc_link *l) in tipc_link_peer_is_down() argument
275 return l->state == LINK_PEER_RESET; in tipc_link_peer_is_down()
278 bool tipc_link_is_reset(struct tipc_link *l) in tipc_link_is_reset() argument
280 return l->state & (LINK_RESET | LINK_FAILINGOVER | LINK_ESTABLISHING); in tipc_link_is_reset()
283 bool tipc_link_is_establishing(struct tipc_link *l) in tipc_link_is_establishing() argument
285 return l->state == LINK_ESTABLISHING; in tipc_link_is_establishing()
288 bool tipc_link_is_synching(struct tipc_link *l) in tipc_link_is_synching() argument
290 return l->state == LINK_SYNCHING; in tipc_link_is_synching()
293 bool tipc_link_is_failingover(struct tipc_link *l) in tipc_link_is_failingover() argument
295 return l->state == LINK_FAILINGOVER; in tipc_link_is_failingover()
298 bool tipc_link_is_blocked(struct tipc_link *l) in tipc_link_is_blocked() argument
300 return l->state & (LINK_RESETTING | LINK_PEER_RESET | LINK_FAILINGOVER); in tipc_link_is_blocked()
303 static bool link_is_bc_sndlink(struct tipc_link *l) in link_is_bc_sndlink() argument
305 return !l->bc_sndlink; in link_is_bc_sndlink()
308 static bool link_is_bc_rcvlink(struct tipc_link *l) in link_is_bc_rcvlink() argument
310 return ((l->bc_rcvlink == l) && !link_is_bc_sndlink(l)); in link_is_bc_rcvlink()
313 void tipc_link_set_active(struct tipc_link *l, bool active) in tipc_link_set_active() argument
315 l->active = active; in tipc_link_set_active()
318 u32 tipc_link_id(struct tipc_link *l) in tipc_link_id() argument
320 return l->peer_bearer_id << 16 | l->bearer_id; in tipc_link_id()
323 int tipc_link_min_win(struct tipc_link *l) in tipc_link_min_win() argument
325 return l->min_win; in tipc_link_min_win()
328 int tipc_link_max_win(struct tipc_link *l) in tipc_link_max_win() argument
330 return l->max_win; in tipc_link_max_win()
333 int tipc_link_prio(struct tipc_link *l) in tipc_link_prio() argument
335 return l->priority; in tipc_link_prio()
338 unsigned long tipc_link_tolerance(struct tipc_link *l) in tipc_link_tolerance() argument
340 return l->tolerance; in tipc_link_tolerance()
343 struct sk_buff_head *tipc_link_inputq(struct tipc_link *l) in tipc_link_inputq() argument
345 return l->inputq; in tipc_link_inputq()
348 char tipc_link_plane(struct tipc_link *l) in tipc_link_plane() argument
350 return l->net_plane; in tipc_link_plane()
353 struct net *tipc_link_net(struct tipc_link *l) in tipc_link_net() argument
355 return l->net; in tipc_link_net()
358 void tipc_link_update_caps(struct tipc_link *l, u16 capabilities) in tipc_link_update_caps() argument
360 l->peer_caps = capabilities; in tipc_link_update_caps()
367 struct tipc_link *rcv_l = uc_l->bc_rcvlink; in tipc_link_add_bc_peer()
369 snd_l->ackers++; in tipc_link_add_bc_peer()
370 rcv_l->acked = snd_l->snd_nxt - 1; in tipc_link_add_bc_peer()
371 snd_l->state = LINK_ESTABLISHED; in tipc_link_add_bc_peer()
379 u16 ack = snd_l->snd_nxt - 1; in tipc_link_remove_bc_peer()
381 snd_l->ackers--; in tipc_link_remove_bc_peer()
382 rcv_l->bc_peer_is_up = true; in tipc_link_remove_bc_peer()
383 rcv_l->state = LINK_ESTABLISHED; in tipc_link_remove_bc_peer()
387 rcv_l->state = LINK_RESET; in tipc_link_remove_bc_peer()
388 if (!snd_l->ackers) { in tipc_link_remove_bc_peer()
391 snd_l->state = LINK_RESET; in tipc_link_remove_bc_peer()
396 int tipc_link_bc_peers(struct tipc_link *l) in tipc_link_bc_peers() argument
398 return l->ackers; in tipc_link_bc_peers()
401 static u16 link_bc_rcv_gap(struct tipc_link *l) in link_bc_rcv_gap() argument
403 struct sk_buff *skb = skb_peek(&l->deferdq); in link_bc_rcv_gap()
406 if (more(l->snd_nxt, l->rcv_nxt)) in link_bc_rcv_gap()
407 gap = l->snd_nxt - l->rcv_nxt; in link_bc_rcv_gap()
409 gap = buf_seqno(skb) - l->rcv_nxt; in link_bc_rcv_gap()
413 void tipc_link_set_mtu(struct tipc_link *l, int mtu) in tipc_link_set_mtu() argument
415 l->mtu = mtu; in tipc_link_set_mtu()
418 int tipc_link_mtu(struct tipc_link *l) in tipc_link_mtu() argument
420 return l->mtu; in tipc_link_mtu()
423 int tipc_link_mss(struct tipc_link *l) in tipc_link_mss() argument
426 return l->mtu - INT_H_SIZE - EMSG_OVERHEAD; in tipc_link_mss()
428 return l->mtu - INT_H_SIZE; in tipc_link_mss()
432 u16 tipc_link_rcv_nxt(struct tipc_link *l) in tipc_link_rcv_nxt() argument
434 return l->rcv_nxt; in tipc_link_rcv_nxt()
437 u16 tipc_link_acked(struct tipc_link *l) in tipc_link_acked() argument
439 return l->acked; in tipc_link_acked()
442 char *tipc_link_name(struct tipc_link *l) in tipc_link_name() argument
444 return l->name; in tipc_link_name()
447 u32 tipc_link_state(struct tipc_link *l) in tipc_link_state() argument
449 return l->state; in tipc_link_state()
453 * tipc_link_create - create a new link
472 * @peer_id: 128-bit ID of peer
488 struct tipc_link *l; in tipc_link_create() local
490 l = kzalloc(sizeof(*l), GFP_ATOMIC); in tipc_link_create()
491 if (!l) in tipc_link_create()
493 *link = l; in tipc_link_create()
494 l->session = session; in tipc_link_create()
506 snprintf(l->name, sizeof(l->name), "%s:%s-%s:unknown", in tipc_link_create()
509 strcpy(l->if_name, if_name); in tipc_link_create()
510 l->addr = peer; in tipc_link_create()
511 l->peer_caps = peer_caps; in tipc_link_create()
512 l->net = net; in tipc_link_create()
513 l->in_session = false; in tipc_link_create()
514 l->bearer_id = bearer_id; in tipc_link_create()
515 l->tolerance = tolerance; in tipc_link_create()
517 bc_rcvlink->tolerance = tolerance; in tipc_link_create()
518 l->net_plane = net_plane; in tipc_link_create()
519 l->advertised_mtu = mtu; in tipc_link_create()
520 l->mtu = mtu; in tipc_link_create()
521 l->priority = priority; in tipc_link_create()
522 tipc_link_set_queue_limits(l, min_win, max_win); in tipc_link_create()
523 l->ackers = 1; in tipc_link_create()
524 l->bc_sndlink = bc_sndlink; in tipc_link_create()
525 l->bc_rcvlink = bc_rcvlink; in tipc_link_create()
526 l->inputq = inputq; in tipc_link_create()
527 l->namedq = namedq; in tipc_link_create()
528 l->state = LINK_RESETTING; in tipc_link_create()
529 __skb_queue_head_init(&l->transmq); in tipc_link_create()
530 __skb_queue_head_init(&l->backlogq); in tipc_link_create()
531 __skb_queue_head_init(&l->deferdq); in tipc_link_create()
532 __skb_queue_head_init(&l->failover_deferdq); in tipc_link_create()
533 skb_queue_head_init(&l->wakeupq); in tipc_link_create()
534 skb_queue_head_init(l->inputq); in tipc_link_create()
539 * tipc_link_bc_create - create new link to be used for broadcast
549 * @peer_id: 128-bit ID of peer
562 struct tipc_link *l; in tipc_link_bc_create() local
569 l = *link; in tipc_link_bc_create()
576 /* Broadcast receiver link name: "broadcast-link:<peer>" */ in tipc_link_bc_create()
577 snprintf(l->name, sizeof(l->name), "%s:%s", tipc_bclink_name, in tipc_link_bc_create()
580 strcpy(l->name, tipc_bclink_name); in tipc_link_bc_create()
582 trace_tipc_link_reset(l, TIPC_DUMP_ALL, "bclink created!"); in tipc_link_bc_create()
583 tipc_link_reset(l); in tipc_link_bc_create()
584 l->state = LINK_RESET; in tipc_link_bc_create()
585 l->ackers = 0; in tipc_link_bc_create()
586 l->bc_rcvlink = l; in tipc_link_bc_create()
589 if (link_is_bc_sndlink(l)) in tipc_link_bc_create()
590 l->state = LINK_ESTABLISHED; in tipc_link_bc_create()
593 if (link_is_bc_rcvlink(l) && !(peer_caps & TIPC_BCAST_RCAST)) in tipc_link_bc_create()
600 * tipc_link_fsm_evt - link finite state machine
601 * @l: pointer to link
604 int tipc_link_fsm_evt(struct tipc_link *l, int evt) in tipc_link_fsm_evt() argument
607 int old_state = l->state; in tipc_link_fsm_evt()
609 switch (l->state) { in tipc_link_fsm_evt()
613 l->state = LINK_PEER_RESET; in tipc_link_fsm_evt()
616 l->state = LINK_RESET; in tipc_link_fsm_evt()
631 l->state = LINK_ESTABLISHING; in tipc_link_fsm_evt()
634 l->state = LINK_FAILINGOVER; in tipc_link_fsm_evt()
650 l->state = LINK_ESTABLISHING; in tipc_link_fsm_evt()
667 l->state = LINK_RESET; in tipc_link_fsm_evt()
684 l->state = LINK_ESTABLISHED; in tipc_link_fsm_evt()
687 l->state = LINK_FAILINGOVER; in tipc_link_fsm_evt()
690 l->state = LINK_RESET; in tipc_link_fsm_evt()
705 l->state = LINK_PEER_RESET; in tipc_link_fsm_evt()
709 l->state = LINK_RESETTING; in tipc_link_fsm_evt()
713 l->state = LINK_RESET; in tipc_link_fsm_evt()
719 l->state = LINK_SYNCHING; in tipc_link_fsm_evt()
730 l->state = LINK_PEER_RESET; in tipc_link_fsm_evt()
734 l->state = LINK_RESETTING; in tipc_link_fsm_evt()
738 l->state = LINK_RESET; in tipc_link_fsm_evt()
744 l->state = LINK_ESTABLISHED; in tipc_link_fsm_evt()
753 pr_err("Unknown FSM state %x in %s\n", l->state, l->name); in tipc_link_fsm_evt()
755 trace_tipc_link_fsm(l->name, old_state, l->state, evt); in tipc_link_fsm_evt()
759 evt, l->state, l->name); in tipc_link_fsm_evt()
760 trace_tipc_link_fsm(l->name, old_state, l->state, evt); in tipc_link_fsm_evt()
764 /* link_profile_stats - update statistical profiling of traffic
766 static void link_profile_stats(struct tipc_link *l) in link_profile_stats() argument
773 l->stats.accu_queue_sz += skb_queue_len(&l->transmq); in link_profile_stats()
774 l->stats.queue_sz_counts++; in link_profile_stats()
776 skb = skb_peek(&l->transmq); in link_profile_stats()
787 l->stats.msg_lengths_total += length; in link_profile_stats()
788 l->stats.msg_length_counts++; in link_profile_stats()
790 l->stats.msg_length_profile[0]++; in link_profile_stats()
792 l->stats.msg_length_profile[1]++; in link_profile_stats()
794 l->stats.msg_length_profile[2]++; in link_profile_stats()
796 l->stats.msg_length_profile[3]++; in link_profile_stats()
798 l->stats.msg_length_profile[4]++; in link_profile_stats()
800 l->stats.msg_length_profile[5]++; in link_profile_stats()
802 l->stats.msg_length_profile[6]++; in link_profile_stats()
806 * tipc_link_too_silent - check if link is "too silent"
807 * @l: tipc link to be checked
812 bool tipc_link_too_silent(struct tipc_link *l) in tipc_link_too_silent() argument
814 return (l->silent_intv_cnt + 2 > l->abort_limit); in tipc_link_too_silent()
817 /* tipc_link_timeout - perform periodic task as instructed from node timeout
819 int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq) in tipc_link_timeout() argument
826 u16 bc_snt = l->bc_sndlink->snd_nxt - 1; in tipc_link_timeout()
827 u16 bc_acked = l->bc_rcvlink->acked; in tipc_link_timeout()
828 struct tipc_mon_state *mstate = &l->mon_state; in tipc_link_timeout()
830 trace_tipc_link_timeout(l, TIPC_DUMP_NONE, " "); in tipc_link_timeout()
831 trace_tipc_link_too_silent(l, TIPC_DUMP_ALL, " "); in tipc_link_timeout()
832 switch (l->state) { in tipc_link_timeout()
836 link_profile_stats(l); in tipc_link_timeout()
837 tipc_mon_get_state(l->net, l->addr, mstate, l->bearer_id); in tipc_link_timeout()
838 if (mstate->reset || (l->silent_intv_cnt > l->abort_limit)) in tipc_link_timeout()
839 return tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_timeout()
841 state |= l->bc_rcvlink->rcv_unacked; in tipc_link_timeout()
842 state |= l->rcv_unacked; in tipc_link_timeout()
843 state |= !skb_queue_empty(&l->transmq); in tipc_link_timeout()
844 probe = mstate->probing; in tipc_link_timeout()
845 probe |= l->silent_intv_cnt; in tipc_link_timeout()
846 if (probe || mstate->monitoring) in tipc_link_timeout()
847 l->silent_intv_cnt++; in tipc_link_timeout()
848 probe |= !skb_queue_empty(&l->deferdq); in tipc_link_timeout()
849 if (l->snd_nxt == l->checkpoint) { in tipc_link_timeout()
850 tipc_link_update_cwin(l, 0, 0); in tipc_link_timeout()
853 l->checkpoint = l->snd_nxt; in tipc_link_timeout()
856 setup = l->rst_cnt++ <= 4; in tipc_link_timeout()
857 setup |= !(l->rst_cnt % 16); in tipc_link_timeout()
873 tipc_link_build_proto_msg(l, mtyp, probe, 0, 0, 0, 0, xmitq); in tipc_link_timeout()
879 * link_schedule_user - schedule a message sender for wakeup after congestion
880 * @l: congested link
884 static int link_schedule_user(struct tipc_link *l, struct tipc_msg *hdr) in link_schedule_user() argument
886 u32 dnode = tipc_own_addr(l->net); in link_schedule_user()
892 dnode, l->addr, dport, 0, 0); in link_schedule_user()
894 return -ENOBUFS; in link_schedule_user()
896 TIPC_SKB_CB(skb)->chain_imp = msg_importance(hdr); in link_schedule_user()
897 skb_queue_tail(&l->wakeupq, skb); in link_schedule_user()
898 l->stats.link_congs++; in link_schedule_user()
899 trace_tipc_link_conges(l, TIPC_DUMP_ALL, "wakeup scheduled!"); in link_schedule_user()
900 return -ELINKCONG; in link_schedule_user()
904 * link_prepare_wakeup - prepare users for wakeup after congestion
905 * @l: congested link
909 static void link_prepare_wakeup(struct tipc_link *l) in link_prepare_wakeup() argument
911 struct sk_buff_head *wakeupq = &l->wakeupq; in link_prepare_wakeup()
912 struct sk_buff_head *inputq = l->inputq; in link_prepare_wakeup()
921 avail[imp] = l->backlog[imp].limit - l->backlog[imp].len; in link_prepare_wakeup()
924 imp = TIPC_SKB_CB(skb)->chain_imp; in link_prepare_wakeup()
927 avail[imp]--; in link_prepare_wakeup()
932 spin_lock_bh(&inputq->lock); in link_prepare_wakeup()
934 spin_unlock_bh(&inputq->lock); in link_prepare_wakeup()
939 * tipc_link_set_skb_retransmit_time - set the time at which retransmission of
942 * @l: link the skb will be transmitted on
945 struct tipc_link *l) in tipc_link_set_skb_retransmit_time() argument
947 if (link_is_bc_sndlink(l)) in tipc_link_set_skb_retransmit_time()
948 TIPC_SKB_CB(skb)->nxt_retr = TIPC_BC_RETR_LIM; in tipc_link_set_skb_retransmit_time()
950 TIPC_SKB_CB(skb)->nxt_retr = TIPC_UC_RETR_TIME; in tipc_link_set_skb_retransmit_time()
953 void tipc_link_reset(struct tipc_link *l) in tipc_link_reset() argument
960 l->in_session = false; in tipc_link_reset()
961 /* Force re-synch of peer session number before establishing */ in tipc_link_reset()
962 l->peer_session--; in tipc_link_reset()
963 l->session++; in tipc_link_reset()
964 l->mtu = l->advertised_mtu; in tipc_link_reset()
966 spin_lock_bh(&l->wakeupq.lock); in tipc_link_reset()
967 skb_queue_splice_init(&l->wakeupq, &list); in tipc_link_reset()
968 spin_unlock_bh(&l->wakeupq.lock); in tipc_link_reset()
970 spin_lock_bh(&l->inputq->lock); in tipc_link_reset()
971 skb_queue_splice_init(&list, l->inputq); in tipc_link_reset()
972 spin_unlock_bh(&l->inputq->lock); in tipc_link_reset()
974 __skb_queue_purge(&l->transmq); in tipc_link_reset()
975 __skb_queue_purge(&l->deferdq); in tipc_link_reset()
976 __skb_queue_purge(&l->backlogq); in tipc_link_reset()
977 __skb_queue_purge(&l->failover_deferdq); in tipc_link_reset()
979 l->backlog[imp].len = 0; in tipc_link_reset()
980 l->backlog[imp].target_bskb = NULL; in tipc_link_reset()
982 kfree_skb(l->reasm_buf); in tipc_link_reset()
983 kfree_skb(l->reasm_tnlmsg); in tipc_link_reset()
984 kfree_skb(l->failover_reasm_skb); in tipc_link_reset()
985 l->reasm_buf = NULL; in tipc_link_reset()
986 l->reasm_tnlmsg = NULL; in tipc_link_reset()
987 l->failover_reasm_skb = NULL; in tipc_link_reset()
988 l->rcv_unacked = 0; in tipc_link_reset()
989 l->snd_nxt = 1; in tipc_link_reset()
990 l->rcv_nxt = 1; in tipc_link_reset()
991 l->snd_nxt_state = 1; in tipc_link_reset()
992 l->rcv_nxt_state = 1; in tipc_link_reset()
993 l->acked = 0; in tipc_link_reset()
994 l->last_gap = 0; in tipc_link_reset()
995 kfree(l->last_ga); in tipc_link_reset()
996 l->last_ga = NULL; in tipc_link_reset()
997 l->silent_intv_cnt = 0; in tipc_link_reset()
998 l->rst_cnt = 0; in tipc_link_reset()
999 l->bc_peer_is_up = false; in tipc_link_reset()
1000 memset(&l->mon_state, 0, sizeof(l->mon_state)); in tipc_link_reset()
1001 tipc_link_reset_stats(l); in tipc_link_reset()
1006 * @l: link to use
1012 * Return: 0 if success, or errno: -ELINKCONG, -EMSGSIZE or -ENOBUFS
1014 int tipc_link_xmit(struct tipc_link *l, struct sk_buff_head *list, in tipc_link_xmit() argument
1017 struct sk_buff_head *backlogq = &l->backlogq; in tipc_link_xmit()
1018 struct sk_buff_head *transmq = &l->transmq; in tipc_link_xmit()
1020 u16 bc_ack = l->bc_rcvlink->rcv_nxt - 1; in tipc_link_xmit()
1021 u16 ack = l->rcv_nxt - 1; in tipc_link_xmit()
1022 u16 seqno = l->snd_nxt; in tipc_link_xmit()
1024 unsigned int mss = tipc_link_mss(l); in tipc_link_xmit()
1025 unsigned int cwin = l->window; in tipc_link_xmit()
1026 unsigned int mtu = l->mtu; in tipc_link_xmit()
1041 return -EMSGSIZE; in tipc_link_xmit()
1046 if (unlikely(l->backlog[imp].len >= l->backlog[imp].limit)) { in tipc_link_xmit()
1048 pr_warn("%s<%s>, link overflow", link_rst_msg, l->name); in tipc_link_xmit()
1050 return -ENOBUFS; in tipc_link_xmit()
1052 rc = link_schedule_user(l, hdr); in tipc_link_xmit()
1056 l->stats.sent_fragmented++; in tipc_link_xmit()
1057 l->stats.sent_fragments += pkt_cnt; in tipc_link_xmit()
1071 return -ENOBUFS; in tipc_link_xmit()
1074 tipc_link_set_skb_retransmit_time(skb, l); in tipc_link_xmit()
1076 TIPC_SKB_CB(skb)->ackers = l->ackers; in tipc_link_xmit()
1077 l->rcv_unacked = 0; in tipc_link_xmit()
1078 l->stats.sent_pkts++; in tipc_link_xmit()
1082 if (tipc_msg_try_bundle(l->backlog[imp].target_bskb, &skb, in tipc_link_xmit()
1083 mss, l->addr, &new_bundle)) { in tipc_link_xmit()
1086 l->backlog[imp].target_bskb = skb; in tipc_link_xmit()
1087 l->backlog[imp].len++; in tipc_link_xmit()
1091 l->stats.sent_bundles++; in tipc_link_xmit()
1092 l->stats.sent_bundled++; in tipc_link_xmit()
1094 l->stats.sent_bundled++; in tipc_link_xmit()
1098 l->backlog[imp].target_bskb = NULL; in tipc_link_xmit()
1099 l->backlog[imp].len += (1 + skb_queue_len(list)); in tipc_link_xmit()
1103 l->snd_nxt = seqno; in tipc_link_xmit()
1107 static void tipc_link_update_cwin(struct tipc_link *l, int released, in tipc_link_update_cwin() argument
1110 int bklog_len = skb_queue_len(&l->backlogq); in tipc_link_update_cwin()
1111 struct sk_buff_head *txq = &l->transmq; in tipc_link_update_cwin()
1113 u16 cwin = l->window; in tipc_link_update_cwin()
1117 l->ssthresh = max_t(u16, l->window / 2, 300); in tipc_link_update_cwin()
1118 l->window = min_t(u16, l->ssthresh, l->window); in tipc_link_update_cwin()
1123 l->ssthresh = max_t(u16, l->window / 2, 300); in tipc_link_update_cwin()
1124 l->window = l->min_win; in tipc_link_update_cwin()
1132 if (txq_len && l->snd_nxt - buf_seqno(skb_peek(txq)) != txq_len) in tipc_link_update_cwin()
1135 l->cong_acks += released; in tipc_link_update_cwin()
1138 if (cwin <= l->ssthresh) { in tipc_link_update_cwin()
1139 l->window = min_t(u16, cwin + released, l->max_win); in tipc_link_update_cwin()
1143 if (l->cong_acks < cwin) in tipc_link_update_cwin()
1145 l->window = min_t(u16, ++cwin, l->max_win); in tipc_link_update_cwin()
1146 l->cong_acks = 0; in tipc_link_update_cwin()
1149 static void tipc_link_advance_backlog(struct tipc_link *l, in tipc_link_advance_backlog() argument
1152 u16 bc_ack = l->bc_rcvlink->rcv_nxt - 1; in tipc_link_advance_backlog()
1153 struct sk_buff_head *txq = &l->transmq; in tipc_link_advance_backlog()
1155 u16 ack = l->rcv_nxt - 1; in tipc_link_advance_backlog()
1156 u16 seqno = l->snd_nxt; in tipc_link_advance_backlog()
1158 u16 cwin = l->window; in tipc_link_advance_backlog()
1162 skb = skb_peek(&l->backlogq); in tipc_link_advance_backlog()
1168 __skb_dequeue(&l->backlogq); in tipc_link_advance_backlog()
1171 l->backlog[imp].len--; in tipc_link_advance_backlog()
1172 if (unlikely(skb == l->backlog[imp].target_bskb)) in tipc_link_advance_backlog()
1173 l->backlog[imp].target_bskb = NULL; in tipc_link_advance_backlog()
1174 __skb_queue_tail(&l->transmq, skb); in tipc_link_advance_backlog()
1175 tipc_link_set_skb_retransmit_time(skb, l); in tipc_link_advance_backlog()
1178 TIPC_SKB_CB(skb)->ackers = l->ackers; in tipc_link_advance_backlog()
1182 l->rcv_unacked = 0; in tipc_link_advance_backlog()
1183 l->stats.sent_pkts++; in tipc_link_advance_backlog()
1186 l->snd_nxt = seqno; in tipc_link_advance_backlog()
1190 * link_retransmit_failure() - Detect repeated retransmit failures
1191 * @l: tipc link sender
1192 * @r: tipc link receiver (= l in case of unicast)
1198 static bool link_retransmit_failure(struct tipc_link *l, struct tipc_link *r, in link_retransmit_failure() argument
1201 struct sk_buff *skb = skb_peek(&l->transmq); in link_retransmit_failure()
1207 if (!TIPC_SKB_CB(skb)->retr_cnt) in link_retransmit_failure()
1210 if (!time_after(jiffies, TIPC_SKB_CB(skb)->retr_stamp + in link_retransmit_failure()
1211 msecs_to_jiffies(r->tolerance * 10))) in link_retransmit_failure()
1215 if (link_is_bc_sndlink(l) && !less(r->acked, msg_seqno(hdr))) in link_retransmit_failure()
1218 pr_warn("Retransmission failure on link <%s>\n", l->name); in link_retransmit_failure()
1219 link_print(l, "State of link "); in link_retransmit_failure()
1225 jiffies_to_msecs(TIPC_SKB_CB(skb)->retr_stamp), in link_retransmit_failure()
1226 TIPC_SKB_CB(skb)->retr_cnt); in link_retransmit_failure()
1228 trace_tipc_list_dump(&l->transmq, true, "retrans failure!"); in link_retransmit_failure()
1229 trace_tipc_link_dump(l, TIPC_DUMP_NONE, "retrans failure!"); in link_retransmit_failure()
1232 if (link_is_bc_sndlink(l)) { in link_retransmit_failure()
1233 r->state = LINK_RESET; in link_retransmit_failure()
1236 *rc |= tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in link_retransmit_failure()
1242 /* tipc_data_input - deliver data and name distr msgs to upper layer
1247 static bool tipc_data_input(struct tipc_link *l, struct sk_buff *skb, in tipc_data_input() argument
1250 struct sk_buff_head *mc_inputq = l->bc_rcvlink->inputq; in tipc_data_input()
1270 l->bc_rcvlink->state = LINK_ESTABLISHED; in tipc_data_input()
1271 skb_queue_tail(l->namedq, skb); in tipc_data_input()
1281 TIPC_SKB_CB(skb)->decrypted) { in tipc_data_input()
1282 tipc_crypto_msg_rcv(l->net, skb); in tipc_data_input()
1294 /* tipc_link_input - process packet that has passed link protocol check
1298 static int tipc_link_input(struct tipc_link *l, struct sk_buff *skb, in tipc_link_input() argument
1310 l->stats.recv_bundles++; in tipc_link_input()
1311 l->stats.recv_bundled += msg_msgcnt(hdr); in tipc_link_input()
1313 tipc_data_input(l, iskb, &tmpq); in tipc_link_input()
1317 l->stats.recv_fragments++; in tipc_link_input()
1319 l->stats.recv_fragmented++; in tipc_link_input()
1320 tipc_data_input(l, skb, inputq); in tipc_link_input()
1321 } else if (!*reasm_skb && !link_is_bc_rcvlink(l)) { in tipc_link_input()
1323 return tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_input()
1327 tipc_bcast_lock(l->net); in tipc_link_input()
1328 tipc_link_bc_init_rcv(l->bc_rcvlink, hdr); in tipc_link_input()
1329 tipc_bcast_unlock(l->net); in tipc_link_input()
1336 /* tipc_link_tnl_rcv() - receive TUNNEL_PROTOCOL message, drop or process the
1339 * @l: tunnel link
1343 static int tipc_link_tnl_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_tnl_rcv() argument
1346 struct sk_buff **reasm_skb = &l->failover_reasm_skb; in tipc_link_tnl_rcv()
1347 struct sk_buff **reasm_tnlmsg = &l->reasm_tnlmsg; in tipc_link_tnl_rcv()
1348 struct sk_buff_head *fdefq = &l->failover_deferdq; in tipc_link_tnl_rcv()
1378 /* Successful but non-complete reassembly? */ in tipc_link_tnl_rcv()
1379 if (*reasm_tnlmsg || link_is_bc_rcvlink(l)) in tipc_link_tnl_rcv()
1382 return tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_tnl_rcv()
1389 if (unlikely(less(seqno, l->drop_point))) { in tipc_link_tnl_rcv()
1393 if (unlikely(seqno != l->drop_point)) { in tipc_link_tnl_rcv()
1398 l->drop_point++; in tipc_link_tnl_rcv()
1399 if (!tipc_data_input(l, iskb, inputq)) in tipc_link_tnl_rcv()
1400 rc |= tipc_link_input(l, iskb, inputq, reasm_skb); in tipc_link_tnl_rcv()
1403 } while ((iskb = __tipc_skb_dequeue(fdefq, l->drop_point))); in tipc_link_tnl_rcv()
1409 * tipc_get_gap_ack_blks - get Gap ACK blocks from PROTOCOL/STATE_MSG
1411 * @l: the tipc link
1417 u16 tipc_get_gap_ack_blks(struct tipc_gap_ack_blks **ga, struct tipc_link *l, in tipc_get_gap_ack_blks() argument
1424 if (l->peer_caps & TIPC_GAP_ACK_BLOCK) { in tipc_get_gap_ack_blks()
1426 sz = ntohs(p->len); in tipc_get_gap_ack_blks()
1428 if (sz == struct_size(p, gacks, size_add(p->ugack_cnt, p->bgack_cnt))) { in tipc_get_gap_ack_blks()
1430 if ((uc && p->ugack_cnt) || (!uc && p->bgack_cnt)) in tipc_get_gap_ack_blks()
1433 } else if (uc && sz == struct_size(p, gacks, p->ugack_cnt)) { in tipc_get_gap_ack_blks()
1434 if (p->ugack_cnt) { in tipc_get_gap_ack_blks()
1435 p->bgack_cnt = 0; in tipc_get_gap_ack_blks()
1449 struct tipc_link *l, u8 start_index) in __tipc_build_gap_ack_blks() argument
1451 struct tipc_gap_ack *gacks = &ga->gacks[start_index]; in __tipc_build_gap_ack_blks()
1452 struct sk_buff *skb = skb_peek(&l->deferdq); in __tipc_build_gap_ack_blks()
1460 skb_queue_walk(&l->deferdq, skb) { in __tipc_build_gap_ack_blks()
1463 gacks[n].ack = htons(expect - 1); in __tipc_build_gap_ack_blks()
1464 gacks[n].gap = htons(seqno - expect); in __tipc_build_gap_ack_blks()
1467 l->name, n, in __tipc_build_gap_ack_blks()
1468 skb_queue_len(&l->deferdq)); in __tipc_build_gap_ack_blks()
1485 /* tipc_build_gap_ack_blks - build Gap ACK blocks
1486 * @l: tipc unicast link
1495 static u16 tipc_build_gap_ack_blks(struct tipc_link *l, struct tipc_msg *hdr) in tipc_build_gap_ack_blks() argument
1497 struct tipc_link *bcl = l->bc_rcvlink; in tipc_build_gap_ack_blks()
1504 tipc_bcast_lock(bcl->net); in tipc_build_gap_ack_blks()
1505 msg_set_bcast_ack(hdr, bcl->rcv_nxt - 1); in tipc_build_gap_ack_blks()
1507 ga->bgack_cnt = __tipc_build_gap_ack_blks(ga, bcl, 0); in tipc_build_gap_ack_blks()
1508 tipc_bcast_unlock(bcl->net); in tipc_build_gap_ack_blks()
1511 ga->ugack_cnt = (msg_seq_gap(hdr)) ? in tipc_build_gap_ack_blks()
1512 __tipc_build_gap_ack_blks(ga, l, ga->bgack_cnt) : 0; in tipc_build_gap_ack_blks()
1515 len = struct_size(ga, gacks, size_add(ga->bgack_cnt, ga->ugack_cnt)); in tipc_build_gap_ack_blks()
1516 ga->len = htons(len); in tipc_build_gap_ack_blks()
1520 /* tipc_link_advance_transmq - advance TIPC link transmq queue by releasing
1523 * @l: tipc link with transmq queue to be advanced
1524 * @r: tipc link "receiver" i.e. in case of broadcast (= "l" if unicast)
1531 * happens (- unlikely case)
1535 static int tipc_link_advance_transmq(struct tipc_link *l, struct tipc_link *r, in tipc_link_advance_transmq() argument
1541 struct tipc_gap_ack_blks *last_ga = r->last_ga, *this_ga = NULL; in tipc_link_advance_transmq()
1545 u32 qlen = skb_queue_len(&l->transmq); in tipc_link_advance_transmq()
1547 u16 bc_ack = l->bc_rcvlink->rcv_nxt - 1; in tipc_link_advance_transmq()
1548 u16 ack = l->rcv_nxt - 1; in tipc_link_advance_transmq()
1550 u16 end = r->acked, start = end, offset = r->last_gap; in tipc_link_advance_transmq()
1551 u16 si = (last_ga) ? last_ga->start_index : 0; in tipc_link_advance_transmq()
1552 bool is_uc = !link_is_bc_sndlink(l); in tipc_link_advance_transmq()
1555 trace_tipc_link_retrans(r, acked + 1, acked + gap, &l->transmq); in tipc_link_advance_transmq()
1560 gack_cnt = ga->ugack_cnt; in tipc_link_advance_transmq()
1561 gacks = &ga->gacks[ga->bgack_cnt]; in tipc_link_advance_transmq()
1564 this_ga = kmemdup(ga, struct_size(ga, gacks, ga->bgack_cnt), in tipc_link_advance_transmq()
1567 this_ga->start_index = 0; in tipc_link_advance_transmq()
1569 gack_cnt = this_ga->bgack_cnt; in tipc_link_advance_transmq()
1570 gacks = &this_ga->gacks[0]; in tipc_link_advance_transmq()
1578 skb_queue_walk_safe(&l->transmq, skb, tmp) { in tipc_link_advance_transmq()
1586 if (!more(seqno, r->acked)) in tipc_link_advance_transmq()
1590 if (!last_ga || si >= last_ga->bgack_cnt) in tipc_link_advance_transmq()
1593 end = ntohs(last_ga->gacks[si].ack); in tipc_link_advance_transmq()
1594 offset = ntohs(last_ga->gacks[si].gap); in tipc_link_advance_transmq()
1598 si < last_ga->bgack_cnt) || in tipc_link_advance_transmq()
1602 last_ga->bgack_cnt); in tipc_link_advance_transmq()
1609 if (--TIPC_SKB_CB(skb)->ackers) in tipc_link_advance_transmq()
1613 __skb_unlink(skb, &l->transmq); in tipc_link_advance_transmq()
1618 link_retransmit_failure(l, r, rc))) { in tipc_link_advance_transmq()
1625 if (time_before(jiffies, TIPC_SKB_CB(skb)->nxt_retr)) in tipc_link_advance_transmq()
1627 tipc_link_set_skb_retransmit_time(skb, l); in tipc_link_advance_transmq()
1634 _skb->priority = TC_PRIO_CONTROL; in tipc_link_advance_transmq()
1636 l->stats.retransmitted++; in tipc_link_advance_transmq()
1638 r->stats.retransmitted++; in tipc_link_advance_transmq()
1641 if (!TIPC_SKB_CB(skb)->retr_cnt++) in tipc_link_advance_transmq()
1642 TIPC_SKB_CB(skb)->retr_stamp = jiffies; in tipc_link_advance_transmq()
1658 r->last_ga = this_ga; in tipc_link_advance_transmq()
1659 r->last_gap = gap; in tipc_link_advance_transmq()
1662 si--; in tipc_link_advance_transmq()
1663 offset = start - acked - 1; in tipc_link_advance_transmq()
1667 if (si < last_ga->bgack_cnt) { in tipc_link_advance_transmq()
1668 last_ga->start_index = si; in tipc_link_advance_transmq()
1669 r->last_gap = offset; in tipc_link_advance_transmq()
1672 r->last_ga = NULL; in tipc_link_advance_transmq()
1673 r->last_gap = 0; in tipc_link_advance_transmq()
1676 r->last_gap = 0; in tipc_link_advance_transmq()
1678 r->acked = acked; in tipc_link_advance_transmq()
1683 return qlen - skb_queue_len(&l->transmq); in tipc_link_advance_transmq()
1691 int tipc_link_build_state_msg(struct tipc_link *l, struct sk_buff_head *xmitq) in tipc_link_build_state_msg() argument
1693 if (!l) in tipc_link_build_state_msg()
1697 if (link_is_bc_rcvlink(l)) { in tipc_link_build_state_msg()
1698 if (((l->rcv_nxt ^ tipc_own_addr(l->net)) & 0xf) != 0xf) in tipc_link_build_state_msg()
1700 l->rcv_unacked = 0; in tipc_link_build_state_msg()
1703 l->snd_nxt = l->rcv_nxt; in tipc_link_build_state_msg()
1707 l->rcv_unacked = 0; in tipc_link_build_state_msg()
1708 l->stats.sent_acks++; in tipc_link_build_state_msg()
1709 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, 0, 0, xmitq); in tipc_link_build_state_msg()
1715 void tipc_link_build_reset_msg(struct tipc_link *l, struct sk_buff_head *xmitq) in tipc_link_build_reset_msg() argument
1720 if (l->state == LINK_ESTABLISHING) in tipc_link_build_reset_msg()
1723 tipc_link_build_proto_msg(l, mtyp, 0, 0, 0, 0, 0, xmitq); in tipc_link_build_reset_msg()
1727 if (skb && (l->state == LINK_RESET)) in tipc_link_build_reset_msg()
1735 static int tipc_link_build_nack_msg(struct tipc_link *l, in tipc_link_build_nack_msg() argument
1738 u32 def_cnt = ++l->stats.deferred_recv; in tipc_link_build_nack_msg()
1739 struct sk_buff_head *dfq = &l->deferdq; in tipc_link_build_nack_msg()
1743 if (link_is_bc_rcvlink(l)) { in tipc_link_build_nack_msg()
1745 match2 = tipc_own_addr(l->net) & 0xf; in tipc_link_build_nack_msg()
1751 if (defq_len >= 3 && !((defq_len - 3) % 16)) { in tipc_link_build_nack_msg()
1752 u16 rcvgap = buf_seqno(skb_peek(dfq)) - l->rcv_nxt; in tipc_link_build_nack_msg()
1754 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, in tipc_link_build_nack_msg()
1760 /* tipc_link_rcv - process TIPC packets/messages arriving from off-node
1761 * @l: the link that should handle the message
1765 int tipc_link_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_rcv() argument
1768 struct sk_buff_head *defq = &l->deferdq; in tipc_link_rcv()
1776 return tipc_link_proto_rcv(l, skb, xmitq); in tipc_link_rcv()
1779 l->silent_intv_cnt = 0; in tipc_link_rcv()
1784 rcv_nxt = l->rcv_nxt; in tipc_link_rcv()
1787 if (unlikely(!tipc_link_is_up(l))) { in tipc_link_rcv()
1788 if (l->state == LINK_ESTABLISHING) in tipc_link_rcv()
1796 l->stats.duplicates++; in tipc_link_rcv()
1800 released += tipc_link_advance_transmq(l, l, msg_ack(hdr), 0, in tipc_link_rcv()
1806 l->stats.duplicates++; in tipc_link_rcv()
1807 rc |= tipc_link_build_nack_msg(l, xmitq); in tipc_link_rcv()
1812 l->rcv_nxt++; in tipc_link_rcv()
1813 l->stats.recv_pkts++; in tipc_link_rcv()
1816 rc |= tipc_link_tnl_rcv(l, skb, l->inputq); in tipc_link_rcv()
1817 else if (!tipc_data_input(l, skb, l->inputq)) in tipc_link_rcv()
1818 rc |= tipc_link_input(l, skb, l->inputq, &l->reasm_buf); in tipc_link_rcv()
1819 if (unlikely(++l->rcv_unacked >= TIPC_MIN_LINK_WIN)) in tipc_link_rcv()
1820 rc |= tipc_link_build_state_msg(l, xmitq); in tipc_link_rcv()
1823 } while ((skb = __tipc_skb_dequeue(defq, l->rcv_nxt))); in tipc_link_rcv()
1827 tipc_link_update_cwin(l, released, 0); in tipc_link_rcv()
1828 tipc_link_advance_backlog(l, xmitq); in tipc_link_rcv()
1829 if (unlikely(!skb_queue_empty(&l->wakeupq))) in tipc_link_rcv()
1830 link_prepare_wakeup(l); in tipc_link_rcv()
1835 static void tipc_link_build_proto_msg(struct tipc_link *l, int mtyp, bool probe, in tipc_link_build_proto_msg() argument
1840 struct tipc_mon_state *mstate = &l->mon_state; in tipc_link_build_proto_msg()
1841 struct sk_buff_head *dfq = &l->deferdq; in tipc_link_build_proto_msg()
1842 struct tipc_link *bcl = l->bc_rcvlink; in tipc_link_build_proto_msg()
1851 if (tipc_link_is_blocked(l)) in tipc_link_build_proto_msg()
1854 if (!tipc_link_is_up(l) && (mtyp == STATE_MSG)) in tipc_link_build_proto_msg()
1858 rcvgap = buf_seqno(skb_peek(dfq)) - l->rcv_nxt; in tipc_link_build_proto_msg()
1862 l->addr, tipc_own_addr(l->net), 0, 0, 0); in tipc_link_build_proto_msg()
1868 msg_set_session(hdr, l->session); in tipc_link_build_proto_msg()
1869 msg_set_bearer_id(hdr, l->bearer_id); in tipc_link_build_proto_msg()
1870 msg_set_net_plane(hdr, l->net_plane); in tipc_link_build_proto_msg()
1871 msg_set_next_sent(hdr, l->snd_nxt); in tipc_link_build_proto_msg()
1872 msg_set_ack(hdr, l->rcv_nxt - 1); in tipc_link_build_proto_msg()
1873 msg_set_bcast_ack(hdr, bcl->rcv_nxt - 1); in tipc_link_build_proto_msg()
1875 msg_set_last_bcast(hdr, l->bc_sndlink->snd_nxt - 1); in tipc_link_build_proto_msg()
1880 msg_set_seqno(hdr, l->snd_nxt + U16_MAX / 2); in tipc_link_build_proto_msg()
1883 if (l->peer_caps & TIPC_LINK_PROTO_SEQNO) in tipc_link_build_proto_msg()
1884 msg_set_seqno(hdr, l->snd_nxt_state++); in tipc_link_build_proto_msg()
1890 if (l->peer_caps & TIPC_GAP_ACK_BLOCK) in tipc_link_build_proto_msg()
1891 glen = tipc_build_gap_ack_blks(l, hdr); in tipc_link_build_proto_msg()
1892 tipc_mon_prep(l->net, data + glen, &dlen, mstate, l->bearer_id); in tipc_link_build_proto_msg()
1895 l->stats.sent_states++; in tipc_link_build_proto_msg()
1896 l->rcv_unacked = 0; in tipc_link_build_proto_msg()
1901 msg_set_dest_session(hdr, l->peer_session); in tipc_link_build_proto_msg()
1903 msg_set_max_pkt(hdr, l->advertised_mtu); in tipc_link_build_proto_msg()
1904 strcpy(data, l->if_name); in tipc_link_build_proto_msg()
1909 l->stats.sent_probes++; in tipc_link_build_proto_msg()
1911 l->stats.sent_nacks++; in tipc_link_build_proto_msg()
1913 bcl->stats.sent_nacks++; in tipc_link_build_proto_msg()
1914 skb->priority = TC_PRIO_CONTROL; in tipc_link_build_proto_msg()
1916 trace_tipc_proto_build(skb, false, l->name); in tipc_link_build_proto_msg()
1919 void tipc_link_create_dummy_tnl_msg(struct tipc_link *l, in tipc_link_create_dummy_tnl_msg() argument
1922 u32 onode = tipc_own_addr(l->net); in tipc_link_create_dummy_tnl_msg()
1926 u32 dnode = l->addr; in tipc_link_create_dummy_tnl_msg()
1939 msg_set_bearer_id(hdr, l->peer_bearer_id); in tipc_link_create_dummy_tnl_msg()
1946 tipc_link_xmit(l, &tnlq, xmitq); in tipc_link_create_dummy_tnl_msg()
1952 void tipc_link_tnl_prepare(struct tipc_link *l, struct tipc_link *tnl, in tipc_link_tnl_prepare() argument
1955 struct sk_buff_head *fdefq = &tnl->failover_deferdq; in tipc_link_tnl_prepare()
1958 struct sk_buff_head *queue = &l->transmq; in tipc_link_tnl_prepare()
1960 u16 pktlen, pktcnt, seqno = l->snd_nxt; in tipc_link_tnl_prepare()
1974 if (mtyp == SYNCH_MSG && (tnl->peer_caps & TIPC_TUNNEL_ENHANCED)) { in tipc_link_tnl_prepare()
1976 INT_H_SIZE, 0, l->addr, in tipc_link_tnl_prepare()
1977 tipc_own_addr(l->net), in tipc_link_tnl_prepare()
1986 syncpt = l->snd_nxt + skb_queue_len(&l->backlogq) - 1; in tipc_link_tnl_prepare()
1988 msg_set_bearer_id(hdr, l->peer_bearer_id); in tipc_link_tnl_prepare()
1998 BASIC_H_SIZE, 0, l->addr, tipc_own_addr(l->net), in tipc_link_tnl_prepare()
2005 tipc_link_xmit(l, &tnlq, &tmpxq); in tipc_link_tnl_prepare()
2009 tipc_msg_init(tipc_own_addr(l->net), &tnlhdr, TUNNEL_PROTOCOL, in tipc_link_tnl_prepare()
2010 mtyp, INT_H_SIZE, l->addr); in tipc_link_tnl_prepare()
2012 pktcnt = l->snd_nxt - buf_seqno(skb_peek(&l->transmq)); in tipc_link_tnl_prepare()
2014 pktcnt = skb_queue_len(&l->transmq); in tipc_link_tnl_prepare()
2015 pktcnt += skb_queue_len(&l->backlogq); in tipc_link_tnl_prepare()
2017 msg_set_bearer_id(&tnlhdr, l->peer_bearer_id); in tipc_link_tnl_prepare()
2022 if (queue == &l->backlogq) in tipc_link_tnl_prepare()
2034 if (pktlen > tnl->mtu - INT_H_SIZE) { in tipc_link_tnl_prepare()
2036 (tnl->peer_caps & TIPC_TUNNEL_ENHANCED)) { in tipc_link_tnl_prepare()
2037 rc = tipc_msg_fragment(skb, &tnlhdr, tnl->mtu, in tipc_link_tnl_prepare()
2044 pktcnt += skb_queue_len(&frags) - 1; in tipc_link_tnl_prepare()
2068 if (queue != &l->backlogq) { in tipc_link_tnl_prepare()
2069 queue = &l->backlogq; in tipc_link_tnl_prepare()
2082 tnl->drop_point = l->rcv_nxt; in tipc_link_tnl_prepare()
2083 tnl->failover_reasm_skb = l->reasm_buf; in tipc_link_tnl_prepare()
2084 l->reasm_buf = NULL; in tipc_link_tnl_prepare()
2092 skb_queue_splice_init(&l->deferdq, fdefq); in tipc_link_tnl_prepare()
2097 * tipc_link_failover_prepare() - prepare tnl for link failover
2099 * This is a special version of the precursor - tipc_link_tnl_prepare(),
2102 * @l: failover link
2106 void tipc_link_failover_prepare(struct tipc_link *l, struct tipc_link *tnl, in tipc_link_failover_prepare() argument
2109 struct sk_buff_head *fdefq = &tnl->failover_deferdq; in tipc_link_failover_prepare()
2119 tnl->drop_point = 1; in tipc_link_failover_prepare()
2120 tnl->failover_reasm_skb = NULL; in tipc_link_failover_prepare()
2133 bool tipc_link_validate_msg(struct tipc_link *l, struct tipc_msg *hdr) in tipc_link_validate_msg() argument
2135 u16 curr_session = l->peer_session; in tipc_link_validate_msg()
2144 if (!l->in_session) in tipc_link_validate_msg()
2149 if (!l->in_session) in tipc_link_validate_msg()
2155 if (!l->in_session) in tipc_link_validate_msg()
2160 if (!tipc_link_is_up(l) && msg_ack(hdr)) in tipc_link_validate_msg()
2162 if (!(l->peer_caps & TIPC_LINK_PROTO_SEQNO)) in tipc_link_validate_msg()
2165 return !less(msg_seqno(hdr), l->rcv_nxt_state); in tipc_link_validate_msg()
2176 static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_proto_rcv() argument
2188 u16 rcv_nxt = l->rcv_nxt; in tipc_link_proto_rcv()
2195 trace_tipc_proto_rcv(skb, false, l->name); in tipc_link_proto_rcv()
2200 if (tipc_link_is_blocked(l) || !xmitq) in tipc_link_proto_rcv()
2203 if (tipc_own_addr(l->net) > msg_prevnode(hdr)) in tipc_link_proto_rcv()
2204 l->net_plane = msg_net_plane(hdr); in tipc_link_proto_rcv()
2212 if (!tipc_link_validate_msg(l, hdr)) { in tipc_link_proto_rcv()
2214 trace_tipc_link_dump(l, TIPC_DUMP_NONE, "PROTO invalid (1)!"); in tipc_link_proto_rcv()
2222 if (msg_max < tipc_bearer_min_mtu(l->net, l->bearer_id)) in tipc_link_proto_rcv()
2225 if_name = strrchr(l->name, ':') + 1; in tipc_link_proto_rcv()
2226 if (sizeof(l->name) - (if_name - l->name) <= TIPC_MAX_IF_NAME) in tipc_link_proto_rcv()
2232 /* Update own tolerance if peer indicates a non-zero value */ in tipc_link_proto_rcv()
2234 l->tolerance = peers_tol; in tipc_link_proto_rcv()
2235 l->bc_rcvlink->tolerance = peers_tol; in tipc_link_proto_rcv()
2238 if (tipc_in_range(peers_prio, l->priority + 1, TIPC_MAX_LINK_PRI)) in tipc_link_proto_rcv()
2239 l->priority = peers_prio; in tipc_link_proto_rcv()
2241 /* If peer is going down we want full re-establish cycle */ in tipc_link_proto_rcv()
2243 rc = tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_proto_rcv()
2247 /* If this endpoint was re-created while peer was ESTABLISHING in tipc_link_proto_rcv()
2248 * it doesn't know current session number. Force re-synch. in tipc_link_proto_rcv()
2251 l->session != msg_dest_session(hdr)) { in tipc_link_proto_rcv()
2252 if (less(l->session, msg_dest_session(hdr))) in tipc_link_proto_rcv()
2253 l->session = msg_dest_session(hdr) + 1; in tipc_link_proto_rcv()
2258 if (mtyp == RESET_MSG || !tipc_link_is_up(l)) in tipc_link_proto_rcv()
2259 rc = tipc_link_fsm_evt(l, LINK_PEER_RESET_EVT); in tipc_link_proto_rcv()
2262 if (mtyp == ACTIVATE_MSG && l->state == LINK_ESTABLISHING) in tipc_link_proto_rcv()
2265 l->peer_session = msg_session(hdr); in tipc_link_proto_rcv()
2266 l->in_session = true; in tipc_link_proto_rcv()
2267 l->peer_bearer_id = msg_bearer_id(hdr); in tipc_link_proto_rcv()
2268 if (l->mtu > msg_max) in tipc_link_proto_rcv()
2269 l->mtu = msg_max; in tipc_link_proto_rcv()
2274 glen = tipc_get_gap_ack_blks(&ga, l, hdr, true); in tipc_link_proto_rcv()
2278 l->rcv_nxt_state = msg_seqno(hdr) + 1; in tipc_link_proto_rcv()
2280 /* Update own tolerance if peer indicates a non-zero value */ in tipc_link_proto_rcv()
2282 l->tolerance = peers_tol; in tipc_link_proto_rcv()
2283 l->bc_rcvlink->tolerance = peers_tol; in tipc_link_proto_rcv()
2286 if ((peers_prio != l->priority) && in tipc_link_proto_rcv()
2288 l->priority = peers_prio; in tipc_link_proto_rcv()
2289 rc = tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_proto_rcv()
2292 l->silent_intv_cnt = 0; in tipc_link_proto_rcv()
2293 l->stats.recv_states++; in tipc_link_proto_rcv()
2295 l->stats.recv_probes++; in tipc_link_proto_rcv()
2297 if (!tipc_link_is_up(l)) { in tipc_link_proto_rcv()
2298 if (l->state == LINK_ESTABLISHING) in tipc_link_proto_rcv()
2303 tipc_mon_rcv(l->net, data + glen, dlen - glen, l->addr, in tipc_link_proto_rcv()
2304 &l->mon_state, l->bearer_id); in tipc_link_proto_rcv()
2309 !tipc_link_is_synching(l) && in tipc_link_proto_rcv()
2310 skb_queue_empty(&l->deferdq)) in tipc_link_proto_rcv()
2311 rcvgap = peers_snd_nxt - l->rcv_nxt; in tipc_link_proto_rcv()
2313 tipc_link_build_proto_msg(l, STATE_MSG, 0, reply, in tipc_link_proto_rcv()
2316 released = tipc_link_advance_transmq(l, l, ack, gap, ga, xmitq, in tipc_link_proto_rcv()
2319 l->stats.recv_nacks++; in tipc_link_proto_rcv()
2321 tipc_link_update_cwin(l, released, retransmitted); in tipc_link_proto_rcv()
2323 tipc_link_advance_backlog(l, xmitq); in tipc_link_proto_rcv()
2324 if (unlikely(!skb_queue_empty(&l->wakeupq))) in tipc_link_proto_rcv()
2325 link_prepare_wakeup(l); in tipc_link_proto_rcv()
2332 /* tipc_link_build_bc_proto_msg() - create broadcast protocol message
2334 static bool tipc_link_build_bc_proto_msg(struct tipc_link *l, bool bcast, in tipc_link_build_bc_proto_msg() argument
2340 struct sk_buff *dfrd_skb = skb_peek(&l->deferdq); in tipc_link_build_bc_proto_msg()
2341 u16 ack = l->rcv_nxt - 1; in tipc_link_build_bc_proto_msg()
2342 u16 gap_to = peers_snd_nxt - 1; in tipc_link_build_bc_proto_msg()
2345 0, l->addr, tipc_own_addr(l->net), 0, 0, 0); in tipc_link_build_bc_proto_msg()
2349 msg_set_last_bcast(hdr, l->bc_sndlink->snd_nxt - 1); in tipc_link_build_bc_proto_msg()
2353 gap_to = buf_seqno(dfrd_skb) - 1; in tipc_link_build_bc_proto_msg()
2360 /* tipc_link_build_bc_init_msg() - synchronize broadcast link endpoints.
2365 static void tipc_link_build_bc_init_msg(struct tipc_link *l, in tipc_link_build_bc_init_msg() argument
2371 if (!tipc_link_build_bc_proto_msg(l->bc_rcvlink, false, 0, &list)) in tipc_link_build_bc_init_msg()
2374 tipc_link_xmit(l, &list, xmitq); in tipc_link_build_bc_init_msg()
2377 /* tipc_link_bc_init_rcv - receive initial broadcast synch data from peer
2379 void tipc_link_bc_init_rcv(struct tipc_link *l, struct tipc_msg *hdr) in tipc_link_bc_init_rcv() argument
2384 if (tipc_link_is_up(l)) in tipc_link_bc_init_rcv()
2388 l->rcv_nxt = peers_snd_nxt; in tipc_link_bc_init_rcv()
2389 l->state = LINK_ESTABLISHED; in tipc_link_bc_init_rcv()
2393 if (l->peer_caps & TIPC_BCAST_SYNCH) in tipc_link_bc_init_rcv()
2401 l->rcv_nxt = peers_snd_nxt; in tipc_link_bc_init_rcv()
2404 /* tipc_link_bc_sync_rcv - update rcv link according to peer's send state
2406 int tipc_link_bc_sync_rcv(struct tipc_link *l, struct tipc_msg *hdr, in tipc_link_bc_sync_rcv() argument
2412 if (!tipc_link_is_up(l)) in tipc_link_bc_sync_rcv()
2420 l->bc_peer_is_up = true; in tipc_link_bc_sync_rcv()
2422 if (!l->bc_peer_is_up) in tipc_link_bc_sync_rcv()
2426 if (more(peers_snd_nxt, l->rcv_nxt + l->window)) in tipc_link_bc_sync_rcv()
2429 l->snd_nxt = peers_snd_nxt; in tipc_link_bc_sync_rcv()
2430 if (link_bc_rcv_gap(l)) in tipc_link_bc_sync_rcv()
2434 if (l->peer_caps & TIPC_BCAST_STATE_NACK) in tipc_link_bc_sync_rcv()
2439 if (!more(peers_snd_nxt, l->rcv_nxt)) { in tipc_link_bc_sync_rcv()
2440 l->nack_state = BC_NACK_SND_CONDITIONAL; in tipc_link_bc_sync_rcv()
2445 if (l->nack_state == BC_NACK_SND_SUPPRESS) { in tipc_link_bc_sync_rcv()
2446 l->nack_state = BC_NACK_SND_UNCONDITIONAL; in tipc_link_bc_sync_rcv()
2451 if (l->nack_state == BC_NACK_SND_CONDITIONAL) { in tipc_link_bc_sync_rcv()
2452 l->nack_state = BC_NACK_SND_UNCONDITIONAL; in tipc_link_bc_sync_rcv()
2453 if ((peers_snd_nxt - l->rcv_nxt) < TIPC_MIN_LINK_WIN) in tipc_link_bc_sync_rcv()
2458 tipc_link_build_bc_proto_msg(l, true, peers_snd_nxt, xmitq); in tipc_link_bc_sync_rcv()
2459 l->nack_state = BC_NACK_SND_SUPPRESS; in tipc_link_bc_sync_rcv()
2468 struct tipc_link *l = r->bc_sndlink; in tipc_link_bc_ack_rcv() local
2472 if (!tipc_link_is_up(r) || !r->bc_peer_is_up) in tipc_link_bc_ack_rcv()
2476 l->stats.recv_nacks++; in tipc_link_bc_ack_rcv()
2477 r->stats.recv_nacks++; in tipc_link_bc_ack_rcv()
2480 if (less(acked, r->acked) || (acked == r->acked && !gap && !ga)) in tipc_link_bc_ack_rcv()
2483 trace_tipc_link_bc_ack(r, acked, gap, &l->transmq); in tipc_link_bc_ack_rcv()
2484 tipc_link_advance_transmq(l, r, acked, gap, ga, retrq, &unused, &rc); in tipc_link_bc_ack_rcv()
2486 tipc_link_advance_backlog(l, xmitq); in tipc_link_bc_ack_rcv()
2487 if (unlikely(!skb_queue_empty(&l->wakeupq))) in tipc_link_bc_ack_rcv()
2488 link_prepare_wakeup(l); in tipc_link_bc_ack_rcv()
2497 int tipc_link_bc_nack_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_bc_nack_rcv() argument
2511 if (!tipc_link_is_up(l) || !l->bc_peer_is_up) in tipc_link_bc_nack_rcv()
2517 if (dnode == tipc_own_addr(l->net)) { in tipc_link_bc_nack_rcv()
2518 rc = tipc_link_bc_ack_rcv(l, acked, to - acked, NULL, xmitq, in tipc_link_bc_nack_rcv()
2520 l->stats.recv_nacks++; in tipc_link_bc_nack_rcv()
2525 if (more(peers_snd_nxt, l->rcv_nxt) && !less(l->rcv_nxt, from)) in tipc_link_bc_nack_rcv()
2526 l->nack_state = BC_NACK_SND_SUPPRESS; in tipc_link_bc_nack_rcv()
2531 void tipc_link_set_queue_limits(struct tipc_link *l, u32 min_win, u32 max_win) in tipc_link_set_queue_limits() argument
2533 int max_bulk = TIPC_MAX_PUBL / (l->mtu / ITEM_SIZE); in tipc_link_set_queue_limits()
2535 l->min_win = min_win; in tipc_link_set_queue_limits()
2536 l->ssthresh = max_win; in tipc_link_set_queue_limits()
2537 l->max_win = max_win; in tipc_link_set_queue_limits()
2538 l->window = min_win; in tipc_link_set_queue_limits()
2539 l->backlog[TIPC_LOW_IMPORTANCE].limit = min_win * 2; in tipc_link_set_queue_limits()
2540 l->backlog[TIPC_MEDIUM_IMPORTANCE].limit = min_win * 4; in tipc_link_set_queue_limits()
2541 l->backlog[TIPC_HIGH_IMPORTANCE].limit = min_win * 6; in tipc_link_set_queue_limits()
2542 l->backlog[TIPC_CRITICAL_IMPORTANCE].limit = min_win * 8; in tipc_link_set_queue_limits()
2543 l->backlog[TIPC_SYSTEM_IMPORTANCE].limit = max_bulk; in tipc_link_set_queue_limits()
2547 * tipc_link_reset_stats - reset link statistics
2548 * @l: pointer to link
2550 void tipc_link_reset_stats(struct tipc_link *l) in tipc_link_reset_stats() argument
2552 memset(&l->stats, 0, sizeof(l->stats)); in tipc_link_reset_stats()
2555 static void link_print(struct tipc_link *l, const char *str) in link_print() argument
2557 struct sk_buff *hskb = skb_peek(&l->transmq); in link_print()
2558 u16 head = hskb ? msg_seqno(buf_msg(hskb)) : l->snd_nxt - 1; in link_print()
2559 u16 tail = l->snd_nxt - 1; in link_print()
2561 pr_info("%s Link <%s> state %x\n", str, l->name, l->state); in link_print()
2562 pr_info("XMTQ: %u [%u-%u], BKLGQ: %u, SNDNX: %u, RCVNX: %u\n", in link_print()
2563 skb_queue_len(&l->transmq), head, tail, in link_print()
2564 skb_queue_len(&l->backlogq), l->snd_nxt, l->rcv_nxt); in link_print()
2583 return -EINVAL; in tipc_nl_parse_link_prop()
2591 return -EINVAL; in tipc_nl_parse_link_prop()
2599 return -EINVAL; in tipc_nl_parse_link_prop()
2617 {TIPC_NLA_STATS_RX_FRAGMENTS, s->recv_fragments}, in __tipc_nl_add_stats()
2618 {TIPC_NLA_STATS_RX_FRAGMENTED, s->recv_fragmented}, in __tipc_nl_add_stats()
2619 {TIPC_NLA_STATS_RX_BUNDLES, s->recv_bundles}, in __tipc_nl_add_stats()
2620 {TIPC_NLA_STATS_RX_BUNDLED, s->recv_bundled}, in __tipc_nl_add_stats()
2622 {TIPC_NLA_STATS_TX_FRAGMENTS, s->sent_fragments}, in __tipc_nl_add_stats()
2623 {TIPC_NLA_STATS_TX_FRAGMENTED, s->sent_fragmented}, in __tipc_nl_add_stats()
2624 {TIPC_NLA_STATS_TX_BUNDLES, s->sent_bundles}, in __tipc_nl_add_stats()
2625 {TIPC_NLA_STATS_TX_BUNDLED, s->sent_bundled}, in __tipc_nl_add_stats()
2626 {TIPC_NLA_STATS_MSG_PROF_TOT, (s->msg_length_counts) ? in __tipc_nl_add_stats()
2627 s->msg_length_counts : 1}, in __tipc_nl_add_stats()
2628 {TIPC_NLA_STATS_MSG_LEN_CNT, s->msg_length_counts}, in __tipc_nl_add_stats()
2629 {TIPC_NLA_STATS_MSG_LEN_TOT, s->msg_lengths_total}, in __tipc_nl_add_stats()
2630 {TIPC_NLA_STATS_MSG_LEN_P0, s->msg_length_profile[0]}, in __tipc_nl_add_stats()
2631 {TIPC_NLA_STATS_MSG_LEN_P1, s->msg_length_profile[1]}, in __tipc_nl_add_stats()
2632 {TIPC_NLA_STATS_MSG_LEN_P2, s->msg_length_profile[2]}, in __tipc_nl_add_stats()
2633 {TIPC_NLA_STATS_MSG_LEN_P3, s->msg_length_profile[3]}, in __tipc_nl_add_stats()
2634 {TIPC_NLA_STATS_MSG_LEN_P4, s->msg_length_profile[4]}, in __tipc_nl_add_stats()
2635 {TIPC_NLA_STATS_MSG_LEN_P5, s->msg_length_profile[5]}, in __tipc_nl_add_stats()
2636 {TIPC_NLA_STATS_MSG_LEN_P6, s->msg_length_profile[6]}, in __tipc_nl_add_stats()
2637 {TIPC_NLA_STATS_RX_STATES, s->recv_states}, in __tipc_nl_add_stats()
2638 {TIPC_NLA_STATS_RX_PROBES, s->recv_probes}, in __tipc_nl_add_stats()
2639 {TIPC_NLA_STATS_RX_NACKS, s->recv_nacks}, in __tipc_nl_add_stats()
2640 {TIPC_NLA_STATS_RX_DEFERRED, s->deferred_recv}, in __tipc_nl_add_stats()
2641 {TIPC_NLA_STATS_TX_STATES, s->sent_states}, in __tipc_nl_add_stats()
2642 {TIPC_NLA_STATS_TX_PROBES, s->sent_probes}, in __tipc_nl_add_stats()
2643 {TIPC_NLA_STATS_TX_NACKS, s->sent_nacks}, in __tipc_nl_add_stats()
2644 {TIPC_NLA_STATS_TX_ACKS, s->sent_acks}, in __tipc_nl_add_stats()
2645 {TIPC_NLA_STATS_RETRANSMITTED, s->retransmitted}, in __tipc_nl_add_stats()
2646 {TIPC_NLA_STATS_DUPLICATES, s->duplicates}, in __tipc_nl_add_stats()
2647 {TIPC_NLA_STATS_LINK_CONGS, s->link_congs}, in __tipc_nl_add_stats()
2648 {TIPC_NLA_STATS_MAX_QUEUE, s->max_queue_sz}, in __tipc_nl_add_stats()
2649 {TIPC_NLA_STATS_AVG_QUEUE, s->queue_sz_counts ? in __tipc_nl_add_stats()
2650 (s->accu_queue_sz / s->queue_sz_counts) : 0} in __tipc_nl_add_stats()
2655 return -EMSGSIZE; in __tipc_nl_add_stats()
2667 return -EMSGSIZE; in __tipc_nl_add_stats()
2680 hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family, in __tipc_nl_add_link()
2683 return -EMSGSIZE; in __tipc_nl_add_link()
2685 attrs = nla_nest_start_noflag(msg->skb, TIPC_NLA_LINK); in __tipc_nl_add_link()
2689 if (nla_put_string(msg->skb, TIPC_NLA_LINK_NAME, link->name)) in __tipc_nl_add_link()
2691 if (nla_put_u32(msg->skb, TIPC_NLA_LINK_DEST, tipc_cluster_mask(self))) in __tipc_nl_add_link()
2693 if (nla_put_u32(msg->skb, TIPC_NLA_LINK_MTU, link->mtu)) in __tipc_nl_add_link()
2695 if (nla_put_u32(msg->skb, TIPC_NLA_LINK_RX, link->stats.recv_pkts)) in __tipc_nl_add_link()
2697 if (nla_put_u32(msg->skb, TIPC_NLA_LINK_TX, link->stats.sent_pkts)) in __tipc_nl_add_link()
2701 if (nla_put_flag(msg->skb, TIPC_NLA_LINK_UP)) in __tipc_nl_add_link()
2703 if (link->active) in __tipc_nl_add_link()
2704 if (nla_put_flag(msg->skb, TIPC_NLA_LINK_ACTIVE)) in __tipc_nl_add_link()
2707 prop = nla_nest_start_noflag(msg->skb, TIPC_NLA_LINK_PROP); in __tipc_nl_add_link()
2710 if (nla_put_u32(msg->skb, TIPC_NLA_PROP_PRIO, link->priority)) in __tipc_nl_add_link()
2712 if (nla_put_u32(msg->skb, TIPC_NLA_PROP_TOL, link->tolerance)) in __tipc_nl_add_link()
2714 if (nla_put_u32(msg->skb, TIPC_NLA_PROP_WIN, in __tipc_nl_add_link()
2715 link->window)) in __tipc_nl_add_link()
2717 if (nla_put_u32(msg->skb, TIPC_NLA_PROP_PRIO, link->priority)) in __tipc_nl_add_link()
2719 nla_nest_end(msg->skb, prop); in __tipc_nl_add_link()
2721 err = __tipc_nl_add_stats(msg->skb, &link->stats); in __tipc_nl_add_link()
2725 nla_nest_end(msg->skb, attrs); in __tipc_nl_add_link()
2726 genlmsg_end(msg->skb, hdr); in __tipc_nl_add_link()
2731 nla_nest_cancel(msg->skb, prop); in __tipc_nl_add_link()
2733 nla_nest_cancel(msg->skb, attrs); in __tipc_nl_add_link()
2735 genlmsg_cancel(msg->skb, hdr); in __tipc_nl_add_link()
2737 return -EMSGSIZE; in __tipc_nl_add_link()
2752 {TIPC_NLA_STATS_RX_INFO, stats->recv_pkts}, in __tipc_nl_add_bc_link_stat()
2753 {TIPC_NLA_STATS_RX_FRAGMENTS, stats->recv_fragments}, in __tipc_nl_add_bc_link_stat()
2754 {TIPC_NLA_STATS_RX_FRAGMENTED, stats->recv_fragmented}, in __tipc_nl_add_bc_link_stat()
2755 {TIPC_NLA_STATS_RX_BUNDLES, stats->recv_bundles}, in __tipc_nl_add_bc_link_stat()
2756 {TIPC_NLA_STATS_RX_BUNDLED, stats->recv_bundled}, in __tipc_nl_add_bc_link_stat()
2757 {TIPC_NLA_STATS_TX_INFO, stats->sent_pkts}, in __tipc_nl_add_bc_link_stat()
2758 {TIPC_NLA_STATS_TX_FRAGMENTS, stats->sent_fragments}, in __tipc_nl_add_bc_link_stat()
2759 {TIPC_NLA_STATS_TX_FRAGMENTED, stats->sent_fragmented}, in __tipc_nl_add_bc_link_stat()
2760 {TIPC_NLA_STATS_TX_BUNDLES, stats->sent_bundles}, in __tipc_nl_add_bc_link_stat()
2761 {TIPC_NLA_STATS_TX_BUNDLED, stats->sent_bundled}, in __tipc_nl_add_bc_link_stat()
2762 {TIPC_NLA_STATS_RX_NACKS, stats->recv_nacks}, in __tipc_nl_add_bc_link_stat()
2763 {TIPC_NLA_STATS_RX_DEFERRED, stats->deferred_recv}, in __tipc_nl_add_bc_link_stat()
2764 {TIPC_NLA_STATS_TX_NACKS, stats->sent_nacks}, in __tipc_nl_add_bc_link_stat()
2765 {TIPC_NLA_STATS_TX_ACKS, stats->sent_acks}, in __tipc_nl_add_bc_link_stat()
2766 {TIPC_NLA_STATS_RETRANSMITTED, stats->retransmitted}, in __tipc_nl_add_bc_link_stat()
2767 {TIPC_NLA_STATS_DUPLICATES, stats->duplicates}, in __tipc_nl_add_bc_link_stat()
2768 {TIPC_NLA_STATS_LINK_CONGS, stats->link_congs}, in __tipc_nl_add_bc_link_stat()
2769 {TIPC_NLA_STATS_MAX_QUEUE, stats->max_queue_sz}, in __tipc_nl_add_bc_link_stat()
2770 {TIPC_NLA_STATS_AVG_QUEUE, stats->queue_sz_counts ? in __tipc_nl_add_bc_link_stat()
2771 (stats->accu_queue_sz / stats->queue_sz_counts) : 0} in __tipc_nl_add_bc_link_stat()
2776 return -EMSGSIZE; in __tipc_nl_add_bc_link_stat()
2788 return -EMSGSIZE; in __tipc_nl_add_bc_link_stat()
2806 hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family, in tipc_nl_add_bc_link()
2810 return -EMSGSIZE; in tipc_nl_add_bc_link()
2813 attrs = nla_nest_start_noflag(msg->skb, TIPC_NLA_LINK); in tipc_nl_add_bc_link()
2818 if (nla_put_flag(msg->skb, TIPC_NLA_LINK_UP)) in tipc_nl_add_bc_link()
2821 if (nla_put_flag(msg->skb, TIPC_NLA_LINK_BROADCAST)) in tipc_nl_add_bc_link()
2823 if (nla_put_string(msg->skb, TIPC_NLA_LINK_NAME, bcl->name)) in tipc_nl_add_bc_link()
2825 if (nla_put_u32(msg->skb, TIPC_NLA_LINK_RX, 0)) in tipc_nl_add_bc_link()
2827 if (nla_put_u32(msg->skb, TIPC_NLA_LINK_TX, 0)) in tipc_nl_add_bc_link()
2830 prop = nla_nest_start_noflag(msg->skb, TIPC_NLA_LINK_PROP); in tipc_nl_add_bc_link()
2833 if (nla_put_u32(msg->skb, TIPC_NLA_PROP_WIN, bcl->max_win)) in tipc_nl_add_bc_link()
2835 if (nla_put_u32(msg->skb, TIPC_NLA_PROP_BROADCAST, bc_mode)) in tipc_nl_add_bc_link()
2838 if (nla_put_u32(msg->skb, TIPC_NLA_PROP_BROADCAST_RATIO, in tipc_nl_add_bc_link()
2841 nla_nest_end(msg->skb, prop); in tipc_nl_add_bc_link()
2843 err = __tipc_nl_add_bc_link_stat(msg->skb, &bcl->stats); in tipc_nl_add_bc_link()
2848 nla_nest_end(msg->skb, attrs); in tipc_nl_add_bc_link()
2849 genlmsg_end(msg->skb, hdr); in tipc_nl_add_bc_link()
2854 nla_nest_cancel(msg->skb, prop); in tipc_nl_add_bc_link()
2856 nla_nest_cancel(msg->skb, attrs); in tipc_nl_add_bc_link()
2859 genlmsg_cancel(msg->skb, hdr); in tipc_nl_add_bc_link()
2861 return -EMSGSIZE; in tipc_nl_add_bc_link()
2864 void tipc_link_set_tolerance(struct tipc_link *l, u32 tol, in tipc_link_set_tolerance() argument
2867 l->tolerance = tol; in tipc_link_set_tolerance()
2868 if (l->bc_rcvlink) in tipc_link_set_tolerance()
2869 l->bc_rcvlink->tolerance = tol; in tipc_link_set_tolerance()
2870 if (tipc_link_is_up(l)) in tipc_link_set_tolerance()
2871 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, tol, 0, xmitq); in tipc_link_set_tolerance()
2874 void tipc_link_set_prio(struct tipc_link *l, u32 prio, in tipc_link_set_prio() argument
2877 l->priority = prio; in tipc_link_set_prio()
2878 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, 0, prio, xmitq); in tipc_link_set_prio()
2881 void tipc_link_set_abort_limit(struct tipc_link *l, u32 limit) in tipc_link_set_abort_limit() argument
2883 l->abort_limit = limit; in tipc_link_set_abort_limit()
2887 * tipc_link_dump - dump TIPC link data
2888 * @l: tipc link to be dumped
2890 * - TIPC_DUMP_NONE: don't dump link queues
2891 * - TIPC_DUMP_TRANSMQ: dump link transmq queue
2892 * - TIPC_DUMP_BACKLOGQ: dump link backlog queue
2893 * - TIPC_DUMP_DEFERDQ: dump link deferd queue
2894 * - TIPC_DUMP_INPUTQ: dump link input queue
2895 * - TIPC_DUMP_WAKEUP: dump link wakeup queue
2896 * - TIPC_DUMP_ALL: dump all the link queues above
2899 int tipc_link_dump(struct tipc_link *l, u16 dqueues, char *buf) in tipc_link_dump() argument
2907 if (!l) { in tipc_link_dump()
2912 i += scnprintf(buf, sz, "link data: %x", l->addr); in tipc_link_dump()
2913 i += scnprintf(buf + i, sz - i, " %x", l->state); in tipc_link_dump()
2914 i += scnprintf(buf + i, sz - i, " %u", l->in_session); in tipc_link_dump()
2915 i += scnprintf(buf + i, sz - i, " %u", l->session); in tipc_link_dump()
2916 i += scnprintf(buf + i, sz - i, " %u", l->peer_session); in tipc_link_dump()
2917 i += scnprintf(buf + i, sz - i, " %u", l->snd_nxt); in tipc_link_dump()
2918 i += scnprintf(buf + i, sz - i, " %u", l->rcv_nxt); in tipc_link_dump()
2919 i += scnprintf(buf + i, sz - i, " %u", l->snd_nxt_state); in tipc_link_dump()
2920 i += scnprintf(buf + i, sz - i, " %u", l->rcv_nxt_state); in tipc_link_dump()
2921 i += scnprintf(buf + i, sz - i, " %x", l->peer_caps); in tipc_link_dump()
2922 i += scnprintf(buf + i, sz - i, " %u", l->silent_intv_cnt); in tipc_link_dump()
2923 i += scnprintf(buf + i, sz - i, " %u", l->rst_cnt); in tipc_link_dump()
2924 i += scnprintf(buf + i, sz - i, " %u", 0); in tipc_link_dump()
2925 i += scnprintf(buf + i, sz - i, " %u", 0); in tipc_link_dump()
2926 i += scnprintf(buf + i, sz - i, " %u", l->acked); in tipc_link_dump()
2928 list = &l->transmq; in tipc_link_dump()
2932 i += scnprintf(buf + i, sz - i, " | %u %u %u", len, in tipc_link_dump()
2936 list = &l->deferdq; in tipc_link_dump()
2940 i += scnprintf(buf + i, sz - i, " | %u %u %u", len, in tipc_link_dump()
2944 list = &l->backlogq; in tipc_link_dump()
2948 i += scnprintf(buf + i, sz - i, " | %u %u %u", len, in tipc_link_dump()
2952 list = l->inputq; in tipc_link_dump()
2956 i += scnprintf(buf + i, sz - i, " | %u %u %u\n", len, in tipc_link_dump()
2961 i += scnprintf(buf + i, sz - i, "transmq: "); in tipc_link_dump()
2962 i += tipc_list_dump(&l->transmq, false, buf + i); in tipc_link_dump()
2965 i += scnprintf(buf + i, sz - i, in tipc_link_dump()
2967 l->backlog[TIPC_LOW_IMPORTANCE].len, in tipc_link_dump()
2968 l->backlog[TIPC_MEDIUM_IMPORTANCE].len, in tipc_link_dump()
2969 l->backlog[TIPC_HIGH_IMPORTANCE].len, in tipc_link_dump()
2970 l->backlog[TIPC_CRITICAL_IMPORTANCE].len, in tipc_link_dump()
2971 l->backlog[TIPC_SYSTEM_IMPORTANCE].len); in tipc_link_dump()
2972 i += tipc_list_dump(&l->backlogq, false, buf + i); in tipc_link_dump()
2975 i += scnprintf(buf + i, sz - i, "deferdq: "); in tipc_link_dump()
2976 i += tipc_list_dump(&l->deferdq, false, buf + i); in tipc_link_dump()
2979 i += scnprintf(buf + i, sz - i, "inputq: "); in tipc_link_dump()
2980 i += tipc_list_dump(l->inputq, false, buf + i); in tipc_link_dump()
2983 i += scnprintf(buf + i, sz - i, "wakeup: "); in tipc_link_dump()
2984 i += tipc_list_dump(&l->wakeupq, false, buf + i); in tipc_link_dump()