Lines Matching full:l
246 static int link_is_up(struct tipc_link *l) in link_is_up() argument
248 return l->state & (LINK_ESTABLISHED | LINK_SYNCHING); in link_is_up()
251 static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb,
253 static void tipc_link_build_proto_msg(struct tipc_link *l, int mtyp, bool probe,
257 static void link_print(struct tipc_link *l, const char *str);
258 static int tipc_link_build_nack_msg(struct tipc_link *l,
260 static void tipc_link_build_bc_init_msg(struct tipc_link *l,
263 struct tipc_link *l, u8 start_index);
264 static u16 tipc_build_gap_ack_blks(struct tipc_link *l, struct tipc_msg *hdr);
265 static int tipc_link_advance_transmq(struct tipc_link *l, struct tipc_link *r,
270 static void tipc_link_update_cwin(struct tipc_link *l, int released,
275 bool tipc_link_is_up(struct tipc_link *l) in tipc_link_is_up() argument
277 return link_is_up(l); in tipc_link_is_up()
280 bool tipc_link_peer_is_down(struct tipc_link *l) in tipc_link_peer_is_down() argument
282 return l->state == LINK_PEER_RESET; in tipc_link_peer_is_down()
285 bool tipc_link_is_reset(struct tipc_link *l) in tipc_link_is_reset() argument
287 return l->state & (LINK_RESET | LINK_FAILINGOVER | LINK_ESTABLISHING); in tipc_link_is_reset()
290 bool tipc_link_is_establishing(struct tipc_link *l) in tipc_link_is_establishing() argument
292 return l->state == LINK_ESTABLISHING; in tipc_link_is_establishing()
295 bool tipc_link_is_synching(struct tipc_link *l) in tipc_link_is_synching() argument
297 return l->state == LINK_SYNCHING; in tipc_link_is_synching()
300 bool tipc_link_is_failingover(struct tipc_link *l) in tipc_link_is_failingover() argument
302 return l->state == LINK_FAILINGOVER; in tipc_link_is_failingover()
305 bool tipc_link_is_blocked(struct tipc_link *l) in tipc_link_is_blocked() argument
307 return l->state & (LINK_RESETTING | LINK_PEER_RESET | LINK_FAILINGOVER); in tipc_link_is_blocked()
310 static bool link_is_bc_sndlink(struct tipc_link *l) in link_is_bc_sndlink() argument
312 return !l->bc_sndlink; in link_is_bc_sndlink()
315 static bool link_is_bc_rcvlink(struct tipc_link *l) in link_is_bc_rcvlink() argument
317 return ((l->bc_rcvlink == l) && !link_is_bc_sndlink(l)); in link_is_bc_rcvlink()
320 void tipc_link_set_active(struct tipc_link *l, bool active) in tipc_link_set_active() argument
322 l->active = active; in tipc_link_set_active()
325 u32 tipc_link_id(struct tipc_link *l) in tipc_link_id() argument
327 return l->peer_bearer_id << 16 | l->bearer_id; in tipc_link_id()
330 int tipc_link_min_win(struct tipc_link *l) in tipc_link_min_win() argument
332 return l->min_win; in tipc_link_min_win()
335 int tipc_link_max_win(struct tipc_link *l) in tipc_link_max_win() argument
337 return l->max_win; in tipc_link_max_win()
340 int tipc_link_prio(struct tipc_link *l) in tipc_link_prio() argument
342 return l->priority; in tipc_link_prio()
345 unsigned long tipc_link_tolerance(struct tipc_link *l) in tipc_link_tolerance() argument
347 return l->tolerance; in tipc_link_tolerance()
350 struct sk_buff_head *tipc_link_inputq(struct tipc_link *l) in tipc_link_inputq() argument
352 return l->inputq; in tipc_link_inputq()
355 char tipc_link_plane(struct tipc_link *l) in tipc_link_plane() argument
357 return l->net_plane; in tipc_link_plane()
360 struct net *tipc_link_net(struct tipc_link *l) in tipc_link_net() argument
362 return l->net; in tipc_link_net()
365 void tipc_link_update_caps(struct tipc_link *l, u16 capabilities) in tipc_link_update_caps() argument
367 l->peer_caps = capabilities; in tipc_link_update_caps()
403 int tipc_link_bc_peers(struct tipc_link *l) in tipc_link_bc_peers() argument
405 return l->ackers; in tipc_link_bc_peers()
408 static u16 link_bc_rcv_gap(struct tipc_link *l) in link_bc_rcv_gap() argument
410 struct sk_buff *skb = skb_peek(&l->deferdq); in link_bc_rcv_gap()
413 if (more(l->snd_nxt, l->rcv_nxt)) in link_bc_rcv_gap()
414 gap = l->snd_nxt - l->rcv_nxt; in link_bc_rcv_gap()
416 gap = buf_seqno(skb) - l->rcv_nxt; in link_bc_rcv_gap()
420 void tipc_link_set_mtu(struct tipc_link *l, int mtu) in tipc_link_set_mtu() argument
422 l->mtu = mtu; in tipc_link_set_mtu()
425 int tipc_link_mtu(struct tipc_link *l) in tipc_link_mtu() argument
427 return l->mtu; in tipc_link_mtu()
430 int tipc_link_mss(struct tipc_link *l) in tipc_link_mss() argument
433 return l->mtu - INT_H_SIZE - EMSG_OVERHEAD; in tipc_link_mss()
435 return l->mtu - INT_H_SIZE; in tipc_link_mss()
439 u16 tipc_link_rcv_nxt(struct tipc_link *l) in tipc_link_rcv_nxt() argument
441 return l->rcv_nxt; in tipc_link_rcv_nxt()
444 u16 tipc_link_acked(struct tipc_link *l) in tipc_link_acked() argument
446 return l->acked; in tipc_link_acked()
449 char *tipc_link_name(struct tipc_link *l) in tipc_link_name() argument
451 return l->name; in tipc_link_name()
454 u32 tipc_link_state(struct tipc_link *l) in tipc_link_state() argument
456 return l->state; in tipc_link_state()
495 struct tipc_link *l; in tipc_link_create() local
497 l = kzalloc(sizeof(*l), GFP_ATOMIC); in tipc_link_create()
498 if (!l) in tipc_link_create()
500 *link = l; in tipc_link_create()
501 l->session = session; in tipc_link_create()
513 snprintf(l->name, sizeof(l->name), "%s:%s-%s:unknown", in tipc_link_create()
516 strcpy(l->if_name, if_name); in tipc_link_create()
517 l->addr = peer; in tipc_link_create()
518 l->peer_caps = peer_caps; in tipc_link_create()
519 l->net = net; in tipc_link_create()
520 l->in_session = false; in tipc_link_create()
521 l->bearer_id = bearer_id; in tipc_link_create()
522 l->tolerance = tolerance; in tipc_link_create()
525 l->net_plane = net_plane; in tipc_link_create()
526 l->advertised_mtu = mtu; in tipc_link_create()
527 l->mtu = mtu; in tipc_link_create()
528 l->priority = priority; in tipc_link_create()
529 tipc_link_set_queue_limits(l, min_win, max_win); in tipc_link_create()
530 l->ackers = 1; in tipc_link_create()
531 l->bc_sndlink = bc_sndlink; in tipc_link_create()
532 l->bc_rcvlink = bc_rcvlink; in tipc_link_create()
533 l->inputq = inputq; in tipc_link_create()
534 l->namedq = namedq; in tipc_link_create()
535 l->state = LINK_RESETTING; in tipc_link_create()
536 __skb_queue_head_init(&l->transmq); in tipc_link_create()
537 __skb_queue_head_init(&l->backlogq); in tipc_link_create()
538 __skb_queue_head_init(&l->deferdq); in tipc_link_create()
539 __skb_queue_head_init(&l->failover_deferdq); in tipc_link_create()
540 skb_queue_head_init(&l->wakeupq); in tipc_link_create()
541 skb_queue_head_init(l->inputq); in tipc_link_create()
569 struct tipc_link *l; in tipc_link_bc_create() local
576 l = *link; in tipc_link_bc_create()
584 snprintf(l->name, sizeof(l->name), "%s:%s", tipc_bclink_name, in tipc_link_bc_create()
587 strcpy(l->name, tipc_bclink_name); in tipc_link_bc_create()
589 trace_tipc_link_reset(l, TIPC_DUMP_ALL, "bclink created!"); in tipc_link_bc_create()
590 tipc_link_reset(l); in tipc_link_bc_create()
591 l->state = LINK_RESET; in tipc_link_bc_create()
592 l->ackers = 0; in tipc_link_bc_create()
593 l->bc_rcvlink = l; in tipc_link_bc_create()
596 if (link_is_bc_sndlink(l)) in tipc_link_bc_create()
597 l->state = LINK_ESTABLISHED; in tipc_link_bc_create()
600 if (link_is_bc_rcvlink(l) && !(peer_caps & TIPC_BCAST_RCAST)) in tipc_link_bc_create()
608 * @l: pointer to link
611 int tipc_link_fsm_evt(struct tipc_link *l, int evt) in tipc_link_fsm_evt() argument
614 int old_state = l->state; in tipc_link_fsm_evt()
616 switch (l->state) { in tipc_link_fsm_evt()
620 l->state = LINK_PEER_RESET; in tipc_link_fsm_evt()
623 l->state = LINK_RESET; in tipc_link_fsm_evt()
638 l->state = LINK_ESTABLISHING; in tipc_link_fsm_evt()
641 l->state = LINK_FAILINGOVER; in tipc_link_fsm_evt()
657 l->state = LINK_ESTABLISHING; in tipc_link_fsm_evt()
674 l->state = LINK_RESET; in tipc_link_fsm_evt()
691 l->state = LINK_ESTABLISHED; in tipc_link_fsm_evt()
694 l->state = LINK_FAILINGOVER; in tipc_link_fsm_evt()
697 l->state = LINK_RESET; in tipc_link_fsm_evt()
712 l->state = LINK_PEER_RESET; in tipc_link_fsm_evt()
716 l->state = LINK_RESETTING; in tipc_link_fsm_evt()
720 l->state = LINK_RESET; in tipc_link_fsm_evt()
726 l->state = LINK_SYNCHING; in tipc_link_fsm_evt()
737 l->state = LINK_PEER_RESET; in tipc_link_fsm_evt()
741 l->state = LINK_RESETTING; in tipc_link_fsm_evt()
745 l->state = LINK_RESET; in tipc_link_fsm_evt()
751 l->state = LINK_ESTABLISHED; in tipc_link_fsm_evt()
760 pr_err("Unknown FSM state %x in %s\n", l->state, l->name); in tipc_link_fsm_evt()
762 trace_tipc_link_fsm(l->name, old_state, l->state, evt); in tipc_link_fsm_evt()
766 evt, l->state, l->name); in tipc_link_fsm_evt()
767 trace_tipc_link_fsm(l->name, old_state, l->state, evt); in tipc_link_fsm_evt()
773 static void link_profile_stats(struct tipc_link *l) in link_profile_stats() argument
780 l->stats.accu_queue_sz += skb_queue_len(&l->transmq); in link_profile_stats()
781 l->stats.queue_sz_counts++; in link_profile_stats()
783 skb = skb_peek(&l->transmq); in link_profile_stats()
794 l->stats.msg_lengths_total += length; in link_profile_stats()
795 l->stats.msg_length_counts++; in link_profile_stats()
797 l->stats.msg_length_profile[0]++; in link_profile_stats()
799 l->stats.msg_length_profile[1]++; in link_profile_stats()
801 l->stats.msg_length_profile[2]++; in link_profile_stats()
803 l->stats.msg_length_profile[3]++; in link_profile_stats()
805 l->stats.msg_length_profile[4]++; in link_profile_stats()
807 l->stats.msg_length_profile[5]++; in link_profile_stats()
809 l->stats.msg_length_profile[6]++; in link_profile_stats()
814 * @l: tipc link to be checked
819 bool tipc_link_too_silent(struct tipc_link *l) in tipc_link_too_silent() argument
821 return (l->silent_intv_cnt + 2 > l->abort_limit); in tipc_link_too_silent()
826 int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq) in tipc_link_timeout() argument
833 u16 bc_snt = l->bc_sndlink->snd_nxt - 1; in tipc_link_timeout()
834 u16 bc_acked = l->bc_rcvlink->acked; in tipc_link_timeout()
835 struct tipc_mon_state *mstate = &l->mon_state; in tipc_link_timeout()
837 trace_tipc_link_timeout(l, TIPC_DUMP_NONE, " "); in tipc_link_timeout()
838 trace_tipc_link_too_silent(l, TIPC_DUMP_ALL, " "); in tipc_link_timeout()
839 switch (l->state) { in tipc_link_timeout()
843 link_profile_stats(l); in tipc_link_timeout()
844 tipc_mon_get_state(l->net, l->addr, mstate, l->bearer_id); in tipc_link_timeout()
845 if (mstate->reset || (l->silent_intv_cnt > l->abort_limit)) in tipc_link_timeout()
846 return tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_timeout()
848 state |= l->bc_rcvlink->rcv_unacked; in tipc_link_timeout()
849 state |= l->rcv_unacked; in tipc_link_timeout()
850 state |= !skb_queue_empty(&l->transmq); in tipc_link_timeout()
852 probe |= l->silent_intv_cnt; in tipc_link_timeout()
854 l->silent_intv_cnt++; in tipc_link_timeout()
855 probe |= !skb_queue_empty(&l->deferdq); in tipc_link_timeout()
856 if (l->snd_nxt == l->checkpoint) { in tipc_link_timeout()
857 tipc_link_update_cwin(l, 0, 0); in tipc_link_timeout()
860 l->checkpoint = l->snd_nxt; in tipc_link_timeout()
863 setup = l->rst_cnt++ <= 4; in tipc_link_timeout()
864 setup |= !(l->rst_cnt % 16); in tipc_link_timeout()
880 tipc_link_build_proto_msg(l, mtyp, probe, 0, 0, 0, 0, xmitq); in tipc_link_timeout()
887 * @l: congested link
891 static int link_schedule_user(struct tipc_link *l, struct tipc_msg *hdr) in link_schedule_user() argument
893 u32 dnode = tipc_own_addr(l->net); in link_schedule_user()
899 dnode, l->addr, dport, 0, 0); in link_schedule_user()
904 skb_queue_tail(&l->wakeupq, skb); in link_schedule_user()
905 l->stats.link_congs++; in link_schedule_user()
906 trace_tipc_link_conges(l, TIPC_DUMP_ALL, "wakeup scheduled!"); in link_schedule_user()
912 * @l: congested link
916 static void link_prepare_wakeup(struct tipc_link *l) in link_prepare_wakeup() argument
918 struct sk_buff_head *wakeupq = &l->wakeupq; in link_prepare_wakeup()
919 struct sk_buff_head *inputq = l->inputq; in link_prepare_wakeup()
928 avail[imp] = l->backlog[imp].limit - l->backlog[imp].len; in link_prepare_wakeup()
949 * @l: link the skb will be transmitted on
952 struct tipc_link *l) in tipc_link_set_skb_retransmit_time() argument
954 if (link_is_bc_sndlink(l)) in tipc_link_set_skb_retransmit_time()
960 void tipc_link_reset(struct tipc_link *l) in tipc_link_reset() argument
967 l->in_session = false; in tipc_link_reset()
969 l->peer_session--; in tipc_link_reset()
970 l->session++; in tipc_link_reset()
971 l->mtu = l->advertised_mtu; in tipc_link_reset()
973 spin_lock_bh(&l->wakeupq.lock); in tipc_link_reset()
974 skb_queue_splice_init(&l->wakeupq, &list); in tipc_link_reset()
975 spin_unlock_bh(&l->wakeupq.lock); in tipc_link_reset()
977 spin_lock_bh(&l->inputq->lock); in tipc_link_reset()
978 skb_queue_splice_init(&list, l->inputq); in tipc_link_reset()
979 spin_unlock_bh(&l->inputq->lock); in tipc_link_reset()
981 __skb_queue_purge(&l->transmq); in tipc_link_reset()
982 __skb_queue_purge(&l->deferdq); in tipc_link_reset()
983 __skb_queue_purge(&l->backlogq); in tipc_link_reset()
984 __skb_queue_purge(&l->failover_deferdq); in tipc_link_reset()
986 l->backlog[imp].len = 0; in tipc_link_reset()
987 l->backlog[imp].target_bskb = NULL; in tipc_link_reset()
989 kfree_skb(l->reasm_buf); in tipc_link_reset()
990 kfree_skb(l->reasm_tnlmsg); in tipc_link_reset()
991 kfree_skb(l->failover_reasm_skb); in tipc_link_reset()
992 l->reasm_buf = NULL; in tipc_link_reset()
993 l->reasm_tnlmsg = NULL; in tipc_link_reset()
994 l->failover_reasm_skb = NULL; in tipc_link_reset()
995 l->rcv_unacked = 0; in tipc_link_reset()
996 l->snd_nxt = 1; in tipc_link_reset()
997 l->rcv_nxt = 1; in tipc_link_reset()
998 l->snd_nxt_state = 1; in tipc_link_reset()
999 l->rcv_nxt_state = 1; in tipc_link_reset()
1000 l->acked = 0; in tipc_link_reset()
1001 l->last_gap = 0; in tipc_link_reset()
1002 kfree(l->last_ga); in tipc_link_reset()
1003 l->last_ga = NULL; in tipc_link_reset()
1004 l->silent_intv_cnt = 0; in tipc_link_reset()
1005 l->rst_cnt = 0; in tipc_link_reset()
1006 l->bc_peer_is_up = false; in tipc_link_reset()
1007 memset(&l->mon_state, 0, sizeof(l->mon_state)); in tipc_link_reset()
1008 tipc_link_reset_stats(l); in tipc_link_reset()
1013 * @l: link to use
1021 int tipc_link_xmit(struct tipc_link *l, struct sk_buff_head *list, in tipc_link_xmit() argument
1024 struct sk_buff_head *backlogq = &l->backlogq; in tipc_link_xmit()
1025 struct sk_buff_head *transmq = &l->transmq; in tipc_link_xmit()
1027 u16 bc_ack = l->bc_rcvlink->rcv_nxt - 1; in tipc_link_xmit()
1028 u16 ack = l->rcv_nxt - 1; in tipc_link_xmit()
1029 u16 seqno = l->snd_nxt; in tipc_link_xmit()
1031 unsigned int mss = tipc_link_mss(l); in tipc_link_xmit()
1032 unsigned int cwin = l->window; in tipc_link_xmit()
1033 unsigned int mtu = l->mtu; in tipc_link_xmit()
1053 if (unlikely(l->backlog[imp].len >= l->backlog[imp].limit)) { in tipc_link_xmit()
1055 pr_warn("%s<%s>, link overflow", link_rst_msg, l->name); in tipc_link_xmit()
1058 rc = link_schedule_user(l, hdr); in tipc_link_xmit()
1062 l->stats.sent_fragmented++; in tipc_link_xmit()
1063 l->stats.sent_fragments += pkt_cnt; in tipc_link_xmit()
1080 tipc_link_set_skb_retransmit_time(skb, l); in tipc_link_xmit()
1082 TIPC_SKB_CB(skb)->ackers = l->ackers; in tipc_link_xmit()
1083 l->rcv_unacked = 0; in tipc_link_xmit()
1084 l->stats.sent_pkts++; in tipc_link_xmit()
1088 if (tipc_msg_try_bundle(l->backlog[imp].target_bskb, &skb, in tipc_link_xmit()
1089 mss, l->addr, &new_bundle)) { in tipc_link_xmit()
1092 l->backlog[imp].target_bskb = skb; in tipc_link_xmit()
1093 l->backlog[imp].len++; in tipc_link_xmit()
1097 l->stats.sent_bundles++; in tipc_link_xmit()
1098 l->stats.sent_bundled++; in tipc_link_xmit()
1100 l->stats.sent_bundled++; in tipc_link_xmit()
1104 l->backlog[imp].target_bskb = NULL; in tipc_link_xmit()
1105 l->backlog[imp].len += (1 + skb_queue_len(list)); in tipc_link_xmit()
1109 l->snd_nxt = seqno; in tipc_link_xmit()
1113 static void tipc_link_update_cwin(struct tipc_link *l, int released, in tipc_link_update_cwin() argument
1116 int bklog_len = skb_queue_len(&l->backlogq); in tipc_link_update_cwin()
1117 struct sk_buff_head *txq = &l->transmq; in tipc_link_update_cwin()
1119 u16 cwin = 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 = min_t(u16, l->ssthresh, l->window); in tipc_link_update_cwin()
1129 l->ssthresh = max_t(u16, l->window / 2, 300); in tipc_link_update_cwin()
1130 l->window = l->min_win; in tipc_link_update_cwin()
1138 if (txq_len && l->snd_nxt - buf_seqno(skb_peek(txq)) != txq_len) in tipc_link_update_cwin()
1141 l->cong_acks += released; in tipc_link_update_cwin()
1144 if (cwin <= l->ssthresh) { in tipc_link_update_cwin()
1145 l->window = min_t(u16, cwin + released, l->max_win); in tipc_link_update_cwin()
1149 if (l->cong_acks < cwin) in tipc_link_update_cwin()
1151 l->window = min_t(u16, ++cwin, l->max_win); in tipc_link_update_cwin()
1152 l->cong_acks = 0; in tipc_link_update_cwin()
1155 static void tipc_link_advance_backlog(struct tipc_link *l, in tipc_link_advance_backlog() argument
1158 u16 bc_ack = l->bc_rcvlink->rcv_nxt - 1; in tipc_link_advance_backlog()
1159 struct sk_buff_head *txq = &l->transmq; in tipc_link_advance_backlog()
1161 u16 ack = l->rcv_nxt - 1; in tipc_link_advance_backlog()
1162 u16 seqno = l->snd_nxt; in tipc_link_advance_backlog()
1164 u16 cwin = l->window; in tipc_link_advance_backlog()
1168 skb = skb_peek(&l->backlogq); in tipc_link_advance_backlog()
1174 __skb_dequeue(&l->backlogq); in tipc_link_advance_backlog()
1177 l->backlog[imp].len--; in tipc_link_advance_backlog()
1178 if (unlikely(skb == l->backlog[imp].target_bskb)) in tipc_link_advance_backlog()
1179 l->backlog[imp].target_bskb = NULL; in tipc_link_advance_backlog()
1180 __skb_queue_tail(&l->transmq, skb); in tipc_link_advance_backlog()
1181 tipc_link_set_skb_retransmit_time(skb, l); in tipc_link_advance_backlog()
1184 TIPC_SKB_CB(skb)->ackers = l->ackers; in tipc_link_advance_backlog()
1188 l->rcv_unacked = 0; in tipc_link_advance_backlog()
1189 l->stats.sent_pkts++; in tipc_link_advance_backlog()
1192 l->snd_nxt = seqno; in tipc_link_advance_backlog()
1197 * @l: tipc link sender
1198 * @r: tipc link receiver (= l in case of unicast)
1204 static bool link_retransmit_failure(struct tipc_link *l, struct tipc_link *r, in link_retransmit_failure() argument
1207 struct sk_buff *skb = skb_peek(&l->transmq); in link_retransmit_failure()
1221 if (link_is_bc_sndlink(l) && !less(r->acked, msg_seqno(hdr))) in link_retransmit_failure()
1224 pr_warn("Retransmission failure on link <%s>\n", l->name); in link_retransmit_failure()
1225 link_print(l, "State of link "); in link_retransmit_failure()
1234 trace_tipc_list_dump(&l->transmq, true, "retrans failure!"); in link_retransmit_failure()
1235 trace_tipc_link_dump(l, TIPC_DUMP_NONE, "retrans failure!"); in link_retransmit_failure()
1238 if (link_is_bc_sndlink(l)) { in link_retransmit_failure()
1242 *rc |= tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in link_retransmit_failure()
1253 static bool tipc_data_input(struct tipc_link *l, struct sk_buff *skb, in tipc_data_input() argument
1256 struct sk_buff_head *mc_inputq = l->bc_rcvlink->inputq; in tipc_data_input()
1276 l->bc_rcvlink->state = LINK_ESTABLISHED; in tipc_data_input()
1277 skb_queue_tail(l->namedq, skb); in tipc_data_input()
1288 tipc_crypto_msg_rcv(l->net, skb); in tipc_data_input()
1304 static int tipc_link_input(struct tipc_link *l, struct sk_buff *skb, in tipc_link_input() argument
1316 l->stats.recv_bundles++; in tipc_link_input()
1317 l->stats.recv_bundled += msg_msgcnt(hdr); in tipc_link_input()
1319 tipc_data_input(l, iskb, &tmpq); in tipc_link_input()
1323 l->stats.recv_fragments++; in tipc_link_input()
1325 l->stats.recv_fragmented++; in tipc_link_input()
1326 tipc_data_input(l, skb, inputq); in tipc_link_input()
1327 } else if (!*reasm_skb && !link_is_bc_rcvlink(l)) { in tipc_link_input()
1329 return tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_input()
1333 tipc_bcast_lock(l->net); in tipc_link_input()
1334 tipc_link_bc_init_rcv(l->bc_rcvlink, hdr); in tipc_link_input()
1335 tipc_bcast_unlock(l->net); in tipc_link_input()
1345 * @l: tunnel link
1349 static int tipc_link_tnl_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_tnl_rcv() argument
1352 struct sk_buff **reasm_skb = &l->failover_reasm_skb; in tipc_link_tnl_rcv()
1353 struct sk_buff **reasm_tnlmsg = &l->reasm_tnlmsg; in tipc_link_tnl_rcv()
1354 struct sk_buff_head *fdefq = &l->failover_deferdq; in tipc_link_tnl_rcv()
1385 if (*reasm_tnlmsg || link_is_bc_rcvlink(l)) in tipc_link_tnl_rcv()
1388 return tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_tnl_rcv()
1395 if (unlikely(less(seqno, l->drop_point))) { in tipc_link_tnl_rcv()
1399 if (unlikely(seqno != l->drop_point)) { in tipc_link_tnl_rcv()
1404 l->drop_point++; in tipc_link_tnl_rcv()
1405 if (!tipc_data_input(l, iskb, inputq)) in tipc_link_tnl_rcv()
1406 rc |= tipc_link_input(l, iskb, inputq, reasm_skb); in tipc_link_tnl_rcv()
1409 } while ((iskb = __tipc_skb_dequeue(fdefq, l->drop_point))); in tipc_link_tnl_rcv()
1417 * @l: the tipc link
1423 u16 tipc_get_gap_ack_blks(struct tipc_gap_ack_blks **ga, struct tipc_link *l, in tipc_get_gap_ack_blks() argument
1430 if (l->peer_caps & TIPC_GAP_ACK_BLOCK) { in tipc_get_gap_ack_blks()
1455 struct tipc_link *l, u8 start_index) in __tipc_build_gap_ack_blks() argument
1458 struct sk_buff *skb = skb_peek(&l->deferdq); in __tipc_build_gap_ack_blks()
1466 skb_queue_walk(&l->deferdq, skb) { in __tipc_build_gap_ack_blks()
1473 l->name, n, in __tipc_build_gap_ack_blks()
1474 skb_queue_len(&l->deferdq)); in __tipc_build_gap_ack_blks()
1492 * @l: tipc unicast link
1501 static u16 tipc_build_gap_ack_blks(struct tipc_link *l, struct tipc_msg *hdr) in tipc_build_gap_ack_blks() argument
1503 struct tipc_link *bcl = l->bc_rcvlink; in tipc_build_gap_ack_blks()
1518 __tipc_build_gap_ack_blks(ga, l, ga->bgack_cnt) : 0; in tipc_build_gap_ack_blks()
1529 * @l: tipc link with transmq queue to be advanced
1530 * @r: tipc link "receiver" i.e. in case of broadcast (= "l" if unicast)
1541 static int tipc_link_advance_transmq(struct tipc_link *l, struct tipc_link *r, in tipc_link_advance_transmq() argument
1551 u32 qlen = skb_queue_len(&l->transmq); in tipc_link_advance_transmq()
1553 u16 bc_ack = l->bc_rcvlink->rcv_nxt - 1; in tipc_link_advance_transmq()
1554 u16 ack = l->rcv_nxt - 1; in tipc_link_advance_transmq()
1558 bool is_uc = !link_is_bc_sndlink(l); in tipc_link_advance_transmq()
1561 trace_tipc_link_retrans(r, acked + 1, acked + gap, &l->transmq); in tipc_link_advance_transmq()
1584 skb_queue_walk_safe(&l->transmq, skb, tmp) { in tipc_link_advance_transmq()
1619 __skb_unlink(skb, &l->transmq); in tipc_link_advance_transmq()
1624 link_retransmit_failure(l, r, rc))) { in tipc_link_advance_transmq()
1633 tipc_link_set_skb_retransmit_time(skb, l); in tipc_link_advance_transmq()
1642 l->stats.retransmitted++; in tipc_link_advance_transmq()
1689 return qlen - skb_queue_len(&l->transmq); in tipc_link_advance_transmq()
1697 int tipc_link_build_state_msg(struct tipc_link *l, struct sk_buff_head *xmitq) in tipc_link_build_state_msg() argument
1699 if (!l) in tipc_link_build_state_msg()
1703 if (link_is_bc_rcvlink(l)) { in tipc_link_build_state_msg()
1704 if (((l->rcv_nxt ^ tipc_own_addr(l->net)) & 0xf) != 0xf) in tipc_link_build_state_msg()
1706 l->rcv_unacked = 0; in tipc_link_build_state_msg()
1709 l->snd_nxt = l->rcv_nxt; in tipc_link_build_state_msg()
1713 l->rcv_unacked = 0; in tipc_link_build_state_msg()
1714 l->stats.sent_acks++; in tipc_link_build_state_msg()
1715 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, 0, 0, xmitq); in tipc_link_build_state_msg()
1721 void tipc_link_build_reset_msg(struct tipc_link *l, struct sk_buff_head *xmitq) in tipc_link_build_reset_msg() argument
1726 if (l->state == LINK_ESTABLISHING) in tipc_link_build_reset_msg()
1729 tipc_link_build_proto_msg(l, mtyp, 0, 0, 0, 0, 0, xmitq); in tipc_link_build_reset_msg()
1733 if (skb && (l->state == LINK_RESET)) in tipc_link_build_reset_msg()
1741 static int tipc_link_build_nack_msg(struct tipc_link *l, in tipc_link_build_nack_msg() argument
1744 u32 def_cnt = ++l->stats.deferred_recv; in tipc_link_build_nack_msg()
1745 struct sk_buff_head *dfq = &l->deferdq; in tipc_link_build_nack_msg()
1749 if (link_is_bc_rcvlink(l)) { in tipc_link_build_nack_msg()
1751 match2 = tipc_own_addr(l->net) & 0xf; in tipc_link_build_nack_msg()
1758 u16 rcvgap = buf_seqno(skb_peek(dfq)) - l->rcv_nxt; in tipc_link_build_nack_msg()
1760 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, in tipc_link_build_nack_msg()
1767 * @l: the link that should handle the message
1771 int tipc_link_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_rcv() argument
1774 struct sk_buff_head *defq = &l->deferdq; in tipc_link_rcv()
1782 return tipc_link_proto_rcv(l, skb, xmitq); in tipc_link_rcv()
1785 l->silent_intv_cnt = 0; in tipc_link_rcv()
1790 rcv_nxt = l->rcv_nxt; in tipc_link_rcv()
1793 if (unlikely(!link_is_up(l))) { in tipc_link_rcv()
1794 if (l->state == LINK_ESTABLISHING) in tipc_link_rcv()
1802 l->stats.duplicates++; in tipc_link_rcv()
1806 released += tipc_link_advance_transmq(l, l, msg_ack(hdr), 0, in tipc_link_rcv()
1812 l->stats.duplicates++; in tipc_link_rcv()
1813 rc |= tipc_link_build_nack_msg(l, xmitq); in tipc_link_rcv()
1818 l->rcv_nxt++; in tipc_link_rcv()
1819 l->stats.recv_pkts++; in tipc_link_rcv()
1822 rc |= tipc_link_tnl_rcv(l, skb, l->inputq); in tipc_link_rcv()
1823 else if (!tipc_data_input(l, skb, l->inputq)) in tipc_link_rcv()
1824 rc |= tipc_link_input(l, skb, l->inputq, &l->reasm_buf); in tipc_link_rcv()
1825 if (unlikely(++l->rcv_unacked >= TIPC_MIN_LINK_WIN)) in tipc_link_rcv()
1826 rc |= tipc_link_build_state_msg(l, xmitq); in tipc_link_rcv()
1829 } while ((skb = __tipc_skb_dequeue(defq, l->rcv_nxt))); in tipc_link_rcv()
1833 tipc_link_update_cwin(l, released, 0); in tipc_link_rcv()
1834 tipc_link_advance_backlog(l, xmitq); in tipc_link_rcv()
1835 if (unlikely(!skb_queue_empty(&l->wakeupq))) in tipc_link_rcv()
1836 link_prepare_wakeup(l); in tipc_link_rcv()
1841 static void tipc_link_build_proto_msg(struct tipc_link *l, int mtyp, bool probe, in tipc_link_build_proto_msg() argument
1846 struct tipc_mon_state *mstate = &l->mon_state; in tipc_link_build_proto_msg()
1847 struct sk_buff_head *dfq = &l->deferdq; in tipc_link_build_proto_msg()
1848 struct tipc_link *bcl = l->bc_rcvlink; in tipc_link_build_proto_msg()
1857 if (tipc_link_is_blocked(l)) in tipc_link_build_proto_msg()
1860 if (!tipc_link_is_up(l) && (mtyp == STATE_MSG)) in tipc_link_build_proto_msg()
1864 rcvgap = buf_seqno(skb_peek(dfq)) - l->rcv_nxt; in tipc_link_build_proto_msg()
1868 l->addr, tipc_own_addr(l->net), 0, 0, 0); in tipc_link_build_proto_msg()
1874 msg_set_session(hdr, l->session); in tipc_link_build_proto_msg()
1875 msg_set_bearer_id(hdr, l->bearer_id); in tipc_link_build_proto_msg()
1876 msg_set_net_plane(hdr, l->net_plane); in tipc_link_build_proto_msg()
1877 msg_set_next_sent(hdr, l->snd_nxt); in tipc_link_build_proto_msg()
1878 msg_set_ack(hdr, l->rcv_nxt - 1); in tipc_link_build_proto_msg()
1881 msg_set_last_bcast(hdr, l->bc_sndlink->snd_nxt - 1); in tipc_link_build_proto_msg()
1886 msg_set_seqno(hdr, l->snd_nxt + U16_MAX / 2); in tipc_link_build_proto_msg()
1889 if (l->peer_caps & TIPC_LINK_PROTO_SEQNO) in tipc_link_build_proto_msg()
1890 msg_set_seqno(hdr, l->snd_nxt_state++); in tipc_link_build_proto_msg()
1896 if (l->peer_caps & TIPC_GAP_ACK_BLOCK) in tipc_link_build_proto_msg()
1897 glen = tipc_build_gap_ack_blks(l, hdr); in tipc_link_build_proto_msg()
1898 tipc_mon_prep(l->net, data + glen, &dlen, mstate, l->bearer_id); in tipc_link_build_proto_msg()
1901 l->stats.sent_states++; in tipc_link_build_proto_msg()
1902 l->rcv_unacked = 0; in tipc_link_build_proto_msg()
1907 msg_set_dest_session(hdr, l->peer_session); in tipc_link_build_proto_msg()
1909 msg_set_max_pkt(hdr, l->advertised_mtu); in tipc_link_build_proto_msg()
1910 strcpy(data, l->if_name); in tipc_link_build_proto_msg()
1915 l->stats.sent_probes++; in tipc_link_build_proto_msg()
1917 l->stats.sent_nacks++; in tipc_link_build_proto_msg()
1922 trace_tipc_proto_build(skb, false, l->name); in tipc_link_build_proto_msg()
1925 void tipc_link_create_dummy_tnl_msg(struct tipc_link *l, in tipc_link_create_dummy_tnl_msg() argument
1928 u32 onode = tipc_own_addr(l->net); in tipc_link_create_dummy_tnl_msg()
1932 u32 dnode = l->addr; in tipc_link_create_dummy_tnl_msg()
1945 msg_set_bearer_id(hdr, l->peer_bearer_id); in tipc_link_create_dummy_tnl_msg()
1952 tipc_link_xmit(l, &tnlq, xmitq); in tipc_link_create_dummy_tnl_msg()
1958 void tipc_link_tnl_prepare(struct tipc_link *l, struct tipc_link *tnl, in tipc_link_tnl_prepare() argument
1964 struct sk_buff_head *queue = &l->transmq; in tipc_link_tnl_prepare()
1966 u16 pktlen, pktcnt, seqno = l->snd_nxt; in tipc_link_tnl_prepare()
1982 INT_H_SIZE, 0, l->addr, in tipc_link_tnl_prepare()
1983 tipc_own_addr(l->net), in tipc_link_tnl_prepare()
1992 syncpt = l->snd_nxt + skb_queue_len(&l->backlogq) - 1; in tipc_link_tnl_prepare()
1994 msg_set_bearer_id(hdr, l->peer_bearer_id); in tipc_link_tnl_prepare()
2004 BASIC_H_SIZE, 0, l->addr, tipc_own_addr(l->net), in tipc_link_tnl_prepare()
2011 tipc_link_xmit(l, &tnlq, &tmpxq); in tipc_link_tnl_prepare()
2015 tipc_msg_init(tipc_own_addr(l->net), &tnlhdr, TUNNEL_PROTOCOL, in tipc_link_tnl_prepare()
2016 mtyp, INT_H_SIZE, l->addr); in tipc_link_tnl_prepare()
2018 pktcnt = l->snd_nxt - buf_seqno(skb_peek(&l->transmq)); in tipc_link_tnl_prepare()
2020 pktcnt = skb_queue_len(&l->transmq); in tipc_link_tnl_prepare()
2021 pktcnt += skb_queue_len(&l->backlogq); in tipc_link_tnl_prepare()
2023 msg_set_bearer_id(&tnlhdr, l->peer_bearer_id); in tipc_link_tnl_prepare()
2028 if (queue == &l->backlogq) in tipc_link_tnl_prepare()
2074 if (queue != &l->backlogq) { in tipc_link_tnl_prepare()
2075 queue = &l->backlogq; in tipc_link_tnl_prepare()
2088 tnl->drop_point = l->rcv_nxt; in tipc_link_tnl_prepare()
2089 tnl->failover_reasm_skb = l->reasm_buf; in tipc_link_tnl_prepare()
2090 l->reasm_buf = NULL; in tipc_link_tnl_prepare()
2098 skb_queue_splice_init(&l->deferdq, fdefq); in tipc_link_tnl_prepare()
2108 * @l: failover link
2112 void tipc_link_failover_prepare(struct tipc_link *l, struct tipc_link *tnl, in tipc_link_failover_prepare() argument
2139 bool tipc_link_validate_msg(struct tipc_link *l, struct tipc_msg *hdr) in tipc_link_validate_msg() argument
2141 u16 curr_session = l->peer_session; in tipc_link_validate_msg()
2150 if (!l->in_session) in tipc_link_validate_msg()
2155 if (!l->in_session) in tipc_link_validate_msg()
2161 if (!l->in_session) in tipc_link_validate_msg()
2166 if (!link_is_up(l) && msg_ack(hdr)) in tipc_link_validate_msg()
2168 if (!(l->peer_caps & TIPC_LINK_PROTO_SEQNO)) in tipc_link_validate_msg()
2171 return !less(msg_seqno(hdr), l->rcv_nxt_state); in tipc_link_validate_msg()
2182 static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_proto_rcv() argument
2194 u16 rcv_nxt = l->rcv_nxt; in tipc_link_proto_rcv()
2201 trace_tipc_proto_rcv(skb, false, l->name); in tipc_link_proto_rcv()
2206 if (tipc_link_is_blocked(l) || !xmitq) in tipc_link_proto_rcv()
2209 if (tipc_own_addr(l->net) > msg_prevnode(hdr)) in tipc_link_proto_rcv()
2210 l->net_plane = msg_net_plane(hdr); in tipc_link_proto_rcv()
2218 if (!tipc_link_validate_msg(l, hdr)) { in tipc_link_proto_rcv()
2220 trace_tipc_link_dump(l, TIPC_DUMP_NONE, "PROTO invalid (1)!"); in tipc_link_proto_rcv()
2228 if (msg_max < tipc_bearer_min_mtu(l->net, l->bearer_id)) in tipc_link_proto_rcv()
2231 if_name = strrchr(l->name, ':') + 1; in tipc_link_proto_rcv()
2232 if (sizeof(l->name) - (if_name - l->name) <= TIPC_MAX_IF_NAME) in tipc_link_proto_rcv()
2240 l->tolerance = peers_tol; in tipc_link_proto_rcv()
2241 l->bc_rcvlink->tolerance = peers_tol; in tipc_link_proto_rcv()
2244 if (tipc_in_range(peers_prio, l->priority + 1, TIPC_MAX_LINK_PRI)) in tipc_link_proto_rcv()
2245 l->priority = peers_prio; in tipc_link_proto_rcv()
2249 rc = tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_proto_rcv()
2257 l->session != msg_dest_session(hdr)) { in tipc_link_proto_rcv()
2258 if (less(l->session, msg_dest_session(hdr))) in tipc_link_proto_rcv()
2259 l->session = msg_dest_session(hdr) + 1; in tipc_link_proto_rcv()
2264 if (mtyp == RESET_MSG || !link_is_up(l)) in tipc_link_proto_rcv()
2265 rc = tipc_link_fsm_evt(l, LINK_PEER_RESET_EVT); in tipc_link_proto_rcv()
2268 if (mtyp == ACTIVATE_MSG && l->state == LINK_ESTABLISHING) in tipc_link_proto_rcv()
2271 l->peer_session = msg_session(hdr); in tipc_link_proto_rcv()
2272 l->in_session = true; in tipc_link_proto_rcv()
2273 l->peer_bearer_id = msg_bearer_id(hdr); in tipc_link_proto_rcv()
2274 if (l->mtu > msg_max) in tipc_link_proto_rcv()
2275 l->mtu = msg_max; in tipc_link_proto_rcv()
2280 glen = tipc_get_gap_ack_blks(&ga, l, hdr, true); in tipc_link_proto_rcv()
2284 l->rcv_nxt_state = msg_seqno(hdr) + 1; in tipc_link_proto_rcv()
2288 l->tolerance = peers_tol; in tipc_link_proto_rcv()
2289 l->bc_rcvlink->tolerance = peers_tol; in tipc_link_proto_rcv()
2292 if ((peers_prio != l->priority) && in tipc_link_proto_rcv()
2294 l->priority = peers_prio; in tipc_link_proto_rcv()
2295 rc = tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_proto_rcv()
2298 l->silent_intv_cnt = 0; in tipc_link_proto_rcv()
2299 l->stats.recv_states++; in tipc_link_proto_rcv()
2301 l->stats.recv_probes++; in tipc_link_proto_rcv()
2303 if (!link_is_up(l)) { in tipc_link_proto_rcv()
2304 if (l->state == LINK_ESTABLISHING) in tipc_link_proto_rcv()
2309 tipc_mon_rcv(l->net, data + glen, dlen - glen, l->addr, in tipc_link_proto_rcv()
2310 &l->mon_state, l->bearer_id); in tipc_link_proto_rcv()
2315 !tipc_link_is_synching(l) && in tipc_link_proto_rcv()
2316 skb_queue_empty(&l->deferdq)) in tipc_link_proto_rcv()
2317 rcvgap = peers_snd_nxt - l->rcv_nxt; in tipc_link_proto_rcv()
2319 tipc_link_build_proto_msg(l, STATE_MSG, 0, reply, in tipc_link_proto_rcv()
2322 released = tipc_link_advance_transmq(l, l, ack, gap, ga, xmitq, in tipc_link_proto_rcv()
2325 l->stats.recv_nacks++; in tipc_link_proto_rcv()
2327 tipc_link_update_cwin(l, released, retransmitted); in tipc_link_proto_rcv()
2329 tipc_link_advance_backlog(l, xmitq); in tipc_link_proto_rcv()
2330 if (unlikely(!skb_queue_empty(&l->wakeupq))) in tipc_link_proto_rcv()
2331 link_prepare_wakeup(l); in tipc_link_proto_rcv()
2340 static bool tipc_link_build_bc_proto_msg(struct tipc_link *l, bool bcast, in tipc_link_build_bc_proto_msg() argument
2346 struct sk_buff *dfrd_skb = skb_peek(&l->deferdq); in tipc_link_build_bc_proto_msg()
2347 u16 ack = l->rcv_nxt - 1; in tipc_link_build_bc_proto_msg()
2351 0, l->addr, tipc_own_addr(l->net), 0, 0, 0); in tipc_link_build_bc_proto_msg()
2355 msg_set_last_bcast(hdr, l->bc_sndlink->snd_nxt - 1); in tipc_link_build_bc_proto_msg()
2371 static void tipc_link_build_bc_init_msg(struct tipc_link *l, in tipc_link_build_bc_init_msg() argument
2377 if (!tipc_link_build_bc_proto_msg(l->bc_rcvlink, false, 0, &list)) in tipc_link_build_bc_init_msg()
2380 tipc_link_xmit(l, &list, xmitq); in tipc_link_build_bc_init_msg()
2385 void tipc_link_bc_init_rcv(struct tipc_link *l, struct tipc_msg *hdr) in tipc_link_bc_init_rcv() argument
2390 if (link_is_up(l)) in tipc_link_bc_init_rcv()
2394 l->rcv_nxt = peers_snd_nxt; in tipc_link_bc_init_rcv()
2395 l->state = LINK_ESTABLISHED; in tipc_link_bc_init_rcv()
2399 if (l->peer_caps & TIPC_BCAST_SYNCH) in tipc_link_bc_init_rcv()
2407 l->rcv_nxt = peers_snd_nxt; in tipc_link_bc_init_rcv()
2412 int tipc_link_bc_sync_rcv(struct tipc_link *l, struct tipc_msg *hdr, in tipc_link_bc_sync_rcv() argument
2418 if (!link_is_up(l)) in tipc_link_bc_sync_rcv()
2426 l->bc_peer_is_up = true; in tipc_link_bc_sync_rcv()
2428 if (!l->bc_peer_is_up) in tipc_link_bc_sync_rcv()
2432 if (more(peers_snd_nxt, l->rcv_nxt + l->window)) in tipc_link_bc_sync_rcv()
2435 l->snd_nxt = peers_snd_nxt; in tipc_link_bc_sync_rcv()
2436 if (link_bc_rcv_gap(l)) in tipc_link_bc_sync_rcv()
2440 if (l->peer_caps & TIPC_BCAST_STATE_NACK) in tipc_link_bc_sync_rcv()
2445 if (!more(peers_snd_nxt, l->rcv_nxt)) { in tipc_link_bc_sync_rcv()
2446 l->nack_state = BC_NACK_SND_CONDITIONAL; in tipc_link_bc_sync_rcv()
2451 if (l->nack_state == BC_NACK_SND_SUPPRESS) { in tipc_link_bc_sync_rcv()
2452 l->nack_state = BC_NACK_SND_UNCONDITIONAL; in tipc_link_bc_sync_rcv()
2457 if (l->nack_state == BC_NACK_SND_CONDITIONAL) { in tipc_link_bc_sync_rcv()
2458 l->nack_state = BC_NACK_SND_UNCONDITIONAL; in tipc_link_bc_sync_rcv()
2459 if ((peers_snd_nxt - l->rcv_nxt) < TIPC_MIN_LINK_WIN) in tipc_link_bc_sync_rcv()
2464 tipc_link_build_bc_proto_msg(l, true, peers_snd_nxt, xmitq); in tipc_link_bc_sync_rcv()
2465 l->nack_state = BC_NACK_SND_SUPPRESS; in tipc_link_bc_sync_rcv()
2474 struct tipc_link *l = r->bc_sndlink; in tipc_link_bc_ack_rcv() local
2482 l->stats.recv_nacks++; in tipc_link_bc_ack_rcv()
2489 trace_tipc_link_bc_ack(r, acked, gap, &l->transmq); in tipc_link_bc_ack_rcv()
2490 tipc_link_advance_transmq(l, r, acked, gap, ga, retrq, &unused, &rc); in tipc_link_bc_ack_rcv()
2492 tipc_link_advance_backlog(l, xmitq); in tipc_link_bc_ack_rcv()
2493 if (unlikely(!skb_queue_empty(&l->wakeupq))) in tipc_link_bc_ack_rcv()
2494 link_prepare_wakeup(l); in tipc_link_bc_ack_rcv()
2503 int tipc_link_bc_nack_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_bc_nack_rcv() argument
2517 if (!tipc_link_is_up(l) || !l->bc_peer_is_up) in tipc_link_bc_nack_rcv()
2523 if (dnode == tipc_own_addr(l->net)) { in tipc_link_bc_nack_rcv()
2524 rc = tipc_link_bc_ack_rcv(l, acked, to - acked, NULL, xmitq, in tipc_link_bc_nack_rcv()
2526 l->stats.recv_nacks++; in tipc_link_bc_nack_rcv()
2531 if (more(peers_snd_nxt, l->rcv_nxt) && !less(l->rcv_nxt, from)) in tipc_link_bc_nack_rcv()
2532 l->nack_state = BC_NACK_SND_SUPPRESS; in tipc_link_bc_nack_rcv()
2537 void tipc_link_set_queue_limits(struct tipc_link *l, u32 min_win, u32 max_win) in tipc_link_set_queue_limits() argument
2539 int max_bulk = TIPC_MAX_PUBL / (l->mtu / ITEM_SIZE); in tipc_link_set_queue_limits()
2541 l->min_win = min_win; in tipc_link_set_queue_limits()
2542 l->ssthresh = max_win; in tipc_link_set_queue_limits()
2543 l->max_win = max_win; in tipc_link_set_queue_limits()
2544 l->window = min_win; in tipc_link_set_queue_limits()
2545 l->backlog[TIPC_LOW_IMPORTANCE].limit = min_win * 2; in tipc_link_set_queue_limits()
2546 l->backlog[TIPC_MEDIUM_IMPORTANCE].limit = min_win * 4; in tipc_link_set_queue_limits()
2547 l->backlog[TIPC_HIGH_IMPORTANCE].limit = min_win * 6; in tipc_link_set_queue_limits()
2548 l->backlog[TIPC_CRITICAL_IMPORTANCE].limit = min_win * 8; in tipc_link_set_queue_limits()
2549 l->backlog[TIPC_SYSTEM_IMPORTANCE].limit = max_bulk; in tipc_link_set_queue_limits()
2554 * @l: pointer to link
2556 void tipc_link_reset_stats(struct tipc_link *l) in tipc_link_reset_stats() argument
2558 memset(&l->stats, 0, sizeof(l->stats)); in tipc_link_reset_stats()
2561 static void link_print(struct tipc_link *l, const char *str) in link_print() argument
2563 struct sk_buff *hskb = skb_peek(&l->transmq); in link_print()
2564 u16 head = hskb ? msg_seqno(buf_msg(hskb)) : l->snd_nxt - 1; in link_print()
2565 u16 tail = l->snd_nxt - 1; in link_print()
2567 pr_info("%s Link <%s> state %x\n", str, l->name, l->state); in link_print()
2569 skb_queue_len(&l->transmq), head, tail, in link_print()
2570 skb_queue_len(&l->backlogq), l->snd_nxt, l->rcv_nxt); in link_print()
2870 void tipc_link_set_tolerance(struct tipc_link *l, u32 tol, in tipc_link_set_tolerance() argument
2873 l->tolerance = tol; in tipc_link_set_tolerance()
2874 if (l->bc_rcvlink) in tipc_link_set_tolerance()
2875 l->bc_rcvlink->tolerance = tol; in tipc_link_set_tolerance()
2876 if (link_is_up(l)) in tipc_link_set_tolerance()
2877 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, tol, 0, xmitq); in tipc_link_set_tolerance()
2880 void tipc_link_set_prio(struct tipc_link *l, u32 prio, in tipc_link_set_prio() argument
2883 l->priority = prio; in tipc_link_set_prio()
2884 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, 0, prio, xmitq); in tipc_link_set_prio()
2887 void tipc_link_set_abort_limit(struct tipc_link *l, u32 limit) in tipc_link_set_abort_limit() argument
2889 l->abort_limit = limit; in tipc_link_set_abort_limit()
2894 * @l: tipc link to be dumped
2905 int tipc_link_dump(struct tipc_link *l, u16 dqueues, char *buf) in tipc_link_dump() argument
2913 if (!l) { in tipc_link_dump()
2918 i += scnprintf(buf, sz, "link data: %x", l->addr); in tipc_link_dump()
2919 i += scnprintf(buf + i, sz - i, " %x", l->state); in tipc_link_dump()
2920 i += scnprintf(buf + i, sz - i, " %u", l->in_session); in tipc_link_dump()
2921 i += scnprintf(buf + i, sz - i, " %u", l->session); in tipc_link_dump()
2922 i += scnprintf(buf + i, sz - i, " %u", l->peer_session); in tipc_link_dump()
2923 i += scnprintf(buf + i, sz - i, " %u", l->snd_nxt); in tipc_link_dump()
2924 i += scnprintf(buf + i, sz - i, " %u", l->rcv_nxt); in tipc_link_dump()
2925 i += scnprintf(buf + i, sz - i, " %u", l->snd_nxt_state); in tipc_link_dump()
2926 i += scnprintf(buf + i, sz - i, " %u", l->rcv_nxt_state); in tipc_link_dump()
2927 i += scnprintf(buf + i, sz - i, " %x", l->peer_caps); in tipc_link_dump()
2928 i += scnprintf(buf + i, sz - i, " %u", l->silent_intv_cnt); in tipc_link_dump()
2929 i += scnprintf(buf + i, sz - i, " %u", l->rst_cnt); in tipc_link_dump()
2932 i += scnprintf(buf + i, sz - i, " %u", l->acked); in tipc_link_dump()
2934 list = &l->transmq; in tipc_link_dump()
2942 list = &l->deferdq; in tipc_link_dump()
2950 list = &l->backlogq; in tipc_link_dump()
2958 list = l->inputq; in tipc_link_dump()
2968 i += tipc_list_dump(&l->transmq, false, buf + i); in tipc_link_dump()
2973 l->backlog[TIPC_LOW_IMPORTANCE].len, in tipc_link_dump()
2974 l->backlog[TIPC_MEDIUM_IMPORTANCE].len, in tipc_link_dump()
2975 l->backlog[TIPC_HIGH_IMPORTANCE].len, in tipc_link_dump()
2976 l->backlog[TIPC_CRITICAL_IMPORTANCE].len, in tipc_link_dump()
2977 l->backlog[TIPC_SYSTEM_IMPORTANCE].len); in tipc_link_dump()
2978 i += tipc_list_dump(&l->backlogq, false, buf + i); in tipc_link_dump()
2982 i += tipc_list_dump(&l->deferdq, false, buf + i); in tipc_link_dump()
2986 i += tipc_list_dump(l->inputq, false, buf + i); in tipc_link_dump()
2990 i += tipc_list_dump(&l->wakeupq, false, buf + i); in tipc_link_dump()