Lines Matching full:l
233 static int link_is_up(struct tipc_link *l) in link_is_up() argument
235 return l->state & (LINK_ESTABLISHED | LINK_SYNCHING); in link_is_up()
238 static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb,
240 static void tipc_link_build_proto_msg(struct tipc_link *l, int mtyp, bool probe,
244 static void link_print(struct tipc_link *l, const char *str);
245 static int tipc_link_build_nack_msg(struct tipc_link *l,
247 static void tipc_link_build_bc_init_msg(struct tipc_link *l,
250 struct tipc_link *l, u8 start_index);
251 static u16 tipc_build_gap_ack_blks(struct tipc_link *l, struct tipc_msg *hdr);
252 static int tipc_link_advance_transmq(struct tipc_link *l, struct tipc_link *r,
257 static void tipc_link_update_cwin(struct tipc_link *l, int released,
262 bool tipc_link_is_up(struct tipc_link *l) in tipc_link_is_up() argument
264 return link_is_up(l); in tipc_link_is_up()
267 bool tipc_link_peer_is_down(struct tipc_link *l) in tipc_link_peer_is_down() argument
269 return l->state == LINK_PEER_RESET; in tipc_link_peer_is_down()
272 bool tipc_link_is_reset(struct tipc_link *l) in tipc_link_is_reset() argument
274 return l->state & (LINK_RESET | LINK_FAILINGOVER | LINK_ESTABLISHING); in tipc_link_is_reset()
277 bool tipc_link_is_establishing(struct tipc_link *l) in tipc_link_is_establishing() argument
279 return l->state == LINK_ESTABLISHING; in tipc_link_is_establishing()
282 bool tipc_link_is_synching(struct tipc_link *l) in tipc_link_is_synching() argument
284 return l->state == LINK_SYNCHING; in tipc_link_is_synching()
287 bool tipc_link_is_failingover(struct tipc_link *l) in tipc_link_is_failingover() argument
289 return l->state == LINK_FAILINGOVER; in tipc_link_is_failingover()
292 bool tipc_link_is_blocked(struct tipc_link *l) in tipc_link_is_blocked() argument
294 return l->state & (LINK_RESETTING | LINK_PEER_RESET | LINK_FAILINGOVER); in tipc_link_is_blocked()
297 static bool link_is_bc_sndlink(struct tipc_link *l) in link_is_bc_sndlink() argument
299 return !l->bc_sndlink; in link_is_bc_sndlink()
302 static bool link_is_bc_rcvlink(struct tipc_link *l) in link_is_bc_rcvlink() argument
304 return ((l->bc_rcvlink == l) && !link_is_bc_sndlink(l)); in link_is_bc_rcvlink()
307 void tipc_link_set_active(struct tipc_link *l, bool active) in tipc_link_set_active() argument
309 l->active = active; in tipc_link_set_active()
312 u32 tipc_link_id(struct tipc_link *l) in tipc_link_id() argument
314 return l->peer_bearer_id << 16 | l->bearer_id; in tipc_link_id()
317 int tipc_link_min_win(struct tipc_link *l) in tipc_link_min_win() argument
319 return l->min_win; in tipc_link_min_win()
322 int tipc_link_max_win(struct tipc_link *l) in tipc_link_max_win() argument
324 return l->max_win; in tipc_link_max_win()
327 int tipc_link_prio(struct tipc_link *l) in tipc_link_prio() argument
329 return l->priority; in tipc_link_prio()
332 unsigned long tipc_link_tolerance(struct tipc_link *l) in tipc_link_tolerance() argument
334 return l->tolerance; in tipc_link_tolerance()
337 struct sk_buff_head *tipc_link_inputq(struct tipc_link *l) in tipc_link_inputq() argument
339 return l->inputq; in tipc_link_inputq()
342 char tipc_link_plane(struct tipc_link *l) in tipc_link_plane() argument
344 return l->net_plane; in tipc_link_plane()
347 void tipc_link_update_caps(struct tipc_link *l, u16 capabilities) in tipc_link_update_caps() argument
349 l->peer_caps = capabilities; in tipc_link_update_caps()
385 int tipc_link_bc_peers(struct tipc_link *l) in tipc_link_bc_peers() argument
387 return l->ackers; in tipc_link_bc_peers()
390 static u16 link_bc_rcv_gap(struct tipc_link *l) in link_bc_rcv_gap() argument
392 struct sk_buff *skb = skb_peek(&l->deferdq); in link_bc_rcv_gap()
395 if (more(l->snd_nxt, l->rcv_nxt)) in link_bc_rcv_gap()
396 gap = l->snd_nxt - l->rcv_nxt; in link_bc_rcv_gap()
398 gap = buf_seqno(skb) - l->rcv_nxt; in link_bc_rcv_gap()
402 void tipc_link_set_mtu(struct tipc_link *l, int mtu) in tipc_link_set_mtu() argument
404 l->mtu = mtu; in tipc_link_set_mtu()
407 int tipc_link_mtu(struct tipc_link *l) in tipc_link_mtu() argument
409 return l->mtu; in tipc_link_mtu()
412 int tipc_link_mss(struct tipc_link *l) in tipc_link_mss() argument
415 return l->mtu - INT_H_SIZE - EMSG_OVERHEAD; in tipc_link_mss()
417 return l->mtu - INT_H_SIZE; in tipc_link_mss()
421 u16 tipc_link_rcv_nxt(struct tipc_link *l) in tipc_link_rcv_nxt() argument
423 return l->rcv_nxt; in tipc_link_rcv_nxt()
426 u16 tipc_link_acked(struct tipc_link *l) in tipc_link_acked() argument
428 return l->acked; in tipc_link_acked()
431 char *tipc_link_name(struct tipc_link *l) in tipc_link_name() argument
433 return l->name; in tipc_link_name()
436 u32 tipc_link_state(struct tipc_link *l) in tipc_link_state() argument
438 return l->state; in tipc_link_state()
476 struct tipc_link *l; in tipc_link_create() local
478 l = kzalloc(sizeof(*l), GFP_ATOMIC); in tipc_link_create()
479 if (!l) in tipc_link_create()
481 *link = l; in tipc_link_create()
482 l->session = session; in tipc_link_create()
494 snprintf(l->name, sizeof(l->name), "%s:%s-%s:unknown", in tipc_link_create()
497 strcpy(l->if_name, if_name); in tipc_link_create()
498 l->addr = peer; in tipc_link_create()
499 l->peer_caps = peer_caps; in tipc_link_create()
500 l->net = net; in tipc_link_create()
501 l->in_session = false; in tipc_link_create()
502 l->bearer_id = bearer_id; in tipc_link_create()
503 l->tolerance = tolerance; in tipc_link_create()
506 l->net_plane = net_plane; in tipc_link_create()
507 l->advertised_mtu = mtu; in tipc_link_create()
508 l->mtu = mtu; in tipc_link_create()
509 l->priority = priority; in tipc_link_create()
510 tipc_link_set_queue_limits(l, min_win, max_win); in tipc_link_create()
511 l->ackers = 1; in tipc_link_create()
512 l->bc_sndlink = bc_sndlink; in tipc_link_create()
513 l->bc_rcvlink = bc_rcvlink; in tipc_link_create()
514 l->inputq = inputq; in tipc_link_create()
515 l->namedq = namedq; in tipc_link_create()
516 l->state = LINK_RESETTING; in tipc_link_create()
517 __skb_queue_head_init(&l->transmq); in tipc_link_create()
518 __skb_queue_head_init(&l->backlogq); in tipc_link_create()
519 __skb_queue_head_init(&l->deferdq); in tipc_link_create()
520 __skb_queue_head_init(&l->failover_deferdq); in tipc_link_create()
521 skb_queue_head_init(&l->wakeupq); in tipc_link_create()
522 skb_queue_head_init(l->inputq); in tipc_link_create()
545 struct tipc_link *l; in tipc_link_bc_create() local
552 l = *link; in tipc_link_bc_create()
560 snprintf(l->name, sizeof(l->name), "%s:%s", tipc_bclink_name, in tipc_link_bc_create()
563 strcpy(l->name, tipc_bclink_name); in tipc_link_bc_create()
565 trace_tipc_link_reset(l, TIPC_DUMP_ALL, "bclink created!"); in tipc_link_bc_create()
566 tipc_link_reset(l); in tipc_link_bc_create()
567 l->state = LINK_RESET; in tipc_link_bc_create()
568 l->ackers = 0; in tipc_link_bc_create()
569 l->bc_rcvlink = l; in tipc_link_bc_create()
572 if (link_is_bc_sndlink(l)) in tipc_link_bc_create()
573 l->state = LINK_ESTABLISHED; in tipc_link_bc_create()
576 if (link_is_bc_rcvlink(l) && !(peer_caps & TIPC_BCAST_RCAST)) in tipc_link_bc_create()
584 * @l: pointer to link
587 int tipc_link_fsm_evt(struct tipc_link *l, int evt) in tipc_link_fsm_evt() argument
590 int old_state = l->state; in tipc_link_fsm_evt()
592 switch (l->state) { in tipc_link_fsm_evt()
596 l->state = LINK_PEER_RESET; in tipc_link_fsm_evt()
599 l->state = LINK_RESET; in tipc_link_fsm_evt()
614 l->state = LINK_ESTABLISHING; in tipc_link_fsm_evt()
617 l->state = LINK_FAILINGOVER; in tipc_link_fsm_evt()
632 l->state = LINK_ESTABLISHING; in tipc_link_fsm_evt()
649 l->state = LINK_RESET; in tipc_link_fsm_evt()
666 l->state = LINK_ESTABLISHED; in tipc_link_fsm_evt()
669 l->state = LINK_FAILINGOVER; in tipc_link_fsm_evt()
672 l->state = LINK_RESET; in tipc_link_fsm_evt()
687 l->state = LINK_PEER_RESET; in tipc_link_fsm_evt()
691 l->state = LINK_RESETTING; in tipc_link_fsm_evt()
695 l->state = LINK_RESET; in tipc_link_fsm_evt()
701 l->state = LINK_SYNCHING; 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_ESTABLISHED; in tipc_link_fsm_evt()
735 pr_err("Unknown FSM state %x in %s\n", l->state, l->name); in tipc_link_fsm_evt()
737 trace_tipc_link_fsm(l->name, old_state, l->state, evt); in tipc_link_fsm_evt()
741 evt, l->state, l->name); in tipc_link_fsm_evt()
742 trace_tipc_link_fsm(l->name, old_state, l->state, evt); in tipc_link_fsm_evt()
748 static void link_profile_stats(struct tipc_link *l) in link_profile_stats() argument
755 l->stats.accu_queue_sz += skb_queue_len(&l->transmq); in link_profile_stats()
756 l->stats.queue_sz_counts++; in link_profile_stats()
758 skb = skb_peek(&l->transmq); in link_profile_stats()
769 l->stats.msg_lengths_total += length; in link_profile_stats()
770 l->stats.msg_length_counts++; in link_profile_stats()
772 l->stats.msg_length_profile[0]++; in link_profile_stats()
774 l->stats.msg_length_profile[1]++; in link_profile_stats()
776 l->stats.msg_length_profile[2]++; in link_profile_stats()
778 l->stats.msg_length_profile[3]++; in link_profile_stats()
780 l->stats.msg_length_profile[4]++; in link_profile_stats()
782 l->stats.msg_length_profile[5]++; in link_profile_stats()
784 l->stats.msg_length_profile[6]++; in link_profile_stats()
789 * @l: tipc link to be checked
794 bool tipc_link_too_silent(struct tipc_link *l) in tipc_link_too_silent() argument
796 return (l->silent_intv_cnt + 2 > l->abort_limit); in tipc_link_too_silent()
801 int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq) in tipc_link_timeout() argument
808 u16 bc_snt = l->bc_sndlink->snd_nxt - 1; in tipc_link_timeout()
809 u16 bc_acked = l->bc_rcvlink->acked; in tipc_link_timeout()
810 struct tipc_mon_state *mstate = &l->mon_state; in tipc_link_timeout()
812 trace_tipc_link_timeout(l, TIPC_DUMP_NONE, " "); in tipc_link_timeout()
813 trace_tipc_link_too_silent(l, TIPC_DUMP_ALL, " "); in tipc_link_timeout()
814 switch (l->state) { in tipc_link_timeout()
818 link_profile_stats(l); in tipc_link_timeout()
819 tipc_mon_get_state(l->net, l->addr, mstate, l->bearer_id); in tipc_link_timeout()
820 if (mstate->reset || (l->silent_intv_cnt > l->abort_limit)) in tipc_link_timeout()
821 return tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_timeout()
823 state |= l->bc_rcvlink->rcv_unacked; in tipc_link_timeout()
824 state |= l->rcv_unacked; in tipc_link_timeout()
825 state |= !skb_queue_empty(&l->transmq); in tipc_link_timeout()
827 probe |= l->silent_intv_cnt; in tipc_link_timeout()
829 l->silent_intv_cnt++; in tipc_link_timeout()
830 probe |= !skb_queue_empty(&l->deferdq); in tipc_link_timeout()
831 if (l->snd_nxt == l->checkpoint) { in tipc_link_timeout()
832 tipc_link_update_cwin(l, 0, 0); in tipc_link_timeout()
835 l->checkpoint = l->snd_nxt; in tipc_link_timeout()
838 setup = l->rst_cnt++ <= 4; in tipc_link_timeout()
839 setup |= !(l->rst_cnt % 16); in tipc_link_timeout()
855 tipc_link_build_proto_msg(l, mtyp, probe, 0, 0, 0, 0, xmitq); in tipc_link_timeout()
862 * @l: congested link
866 static int link_schedule_user(struct tipc_link *l, struct tipc_msg *hdr) in link_schedule_user() argument
868 u32 dnode = tipc_own_addr(l->net); in link_schedule_user()
874 dnode, l->addr, dport, 0, 0); in link_schedule_user()
879 skb_queue_tail(&l->wakeupq, skb); in link_schedule_user()
880 l->stats.link_congs++; in link_schedule_user()
881 trace_tipc_link_conges(l, TIPC_DUMP_ALL, "wakeup scheduled!"); in link_schedule_user()
887 * @l: congested link
891 static void link_prepare_wakeup(struct tipc_link *l) in link_prepare_wakeup() argument
893 struct sk_buff_head *wakeupq = &l->wakeupq; in link_prepare_wakeup()
894 struct sk_buff_head *inputq = l->inputq; in link_prepare_wakeup()
903 avail[imp] = l->backlog[imp].limit - l->backlog[imp].len; in link_prepare_wakeup()
924 * @l: link the skb will be transmitted on
927 struct tipc_link *l) in tipc_link_set_skb_retransmit_time() argument
929 if (link_is_bc_sndlink(l)) in tipc_link_set_skb_retransmit_time()
935 void tipc_link_reset(struct tipc_link *l) in tipc_link_reset() argument
942 l->in_session = false; in tipc_link_reset()
944 l->peer_session--; in tipc_link_reset()
945 l->session++; in tipc_link_reset()
946 l->mtu = l->advertised_mtu; in tipc_link_reset()
948 spin_lock_bh(&l->wakeupq.lock); in tipc_link_reset()
949 skb_queue_splice_init(&l->wakeupq, &list); in tipc_link_reset()
950 spin_unlock_bh(&l->wakeupq.lock); in tipc_link_reset()
952 spin_lock_bh(&l->inputq->lock); in tipc_link_reset()
953 skb_queue_splice_init(&list, l->inputq); in tipc_link_reset()
954 spin_unlock_bh(&l->inputq->lock); in tipc_link_reset()
956 __skb_queue_purge(&l->transmq); in tipc_link_reset()
957 __skb_queue_purge(&l->deferdq); in tipc_link_reset()
958 __skb_queue_purge(&l->backlogq); in tipc_link_reset()
959 __skb_queue_purge(&l->failover_deferdq); in tipc_link_reset()
961 l->backlog[imp].len = 0; in tipc_link_reset()
962 l->backlog[imp].target_bskb = NULL; in tipc_link_reset()
964 kfree_skb(l->reasm_buf); in tipc_link_reset()
965 kfree_skb(l->reasm_tnlmsg); in tipc_link_reset()
966 kfree_skb(l->failover_reasm_skb); in tipc_link_reset()
967 l->reasm_buf = NULL; in tipc_link_reset()
968 l->reasm_tnlmsg = NULL; in tipc_link_reset()
969 l->failover_reasm_skb = NULL; in tipc_link_reset()
970 l->rcv_unacked = 0; in tipc_link_reset()
971 l->snd_nxt = 1; in tipc_link_reset()
972 l->rcv_nxt = 1; in tipc_link_reset()
973 l->snd_nxt_state = 1; in tipc_link_reset()
974 l->rcv_nxt_state = 1; in tipc_link_reset()
975 l->acked = 0; in tipc_link_reset()
976 l->last_gap = 0; in tipc_link_reset()
977 kfree(l->last_ga); in tipc_link_reset()
978 l->last_ga = NULL; in tipc_link_reset()
979 l->silent_intv_cnt = 0; in tipc_link_reset()
980 l->rst_cnt = 0; in tipc_link_reset()
981 l->bc_peer_is_up = false; in tipc_link_reset()
982 memset(&l->mon_state, 0, sizeof(l->mon_state)); in tipc_link_reset()
983 tipc_link_reset_stats(l); in tipc_link_reset()
988 * @l: link to use
996 int tipc_link_xmit(struct tipc_link *l, struct sk_buff_head *list, in tipc_link_xmit() argument
999 struct sk_buff_head *backlogq = &l->backlogq; in tipc_link_xmit()
1000 struct sk_buff_head *transmq = &l->transmq; in tipc_link_xmit()
1002 u16 bc_ack = l->bc_rcvlink->rcv_nxt - 1; in tipc_link_xmit()
1003 u16 ack = l->rcv_nxt - 1; in tipc_link_xmit()
1004 u16 seqno = l->snd_nxt; in tipc_link_xmit()
1006 unsigned int mss = tipc_link_mss(l); in tipc_link_xmit()
1007 unsigned int cwin = l->window; in tipc_link_xmit()
1008 unsigned int mtu = l->mtu; in tipc_link_xmit()
1028 if (unlikely(l->backlog[imp].len >= l->backlog[imp].limit)) { in tipc_link_xmit()
1030 pr_warn("%s<%s>, link overflow", link_rst_msg, l->name); in tipc_link_xmit()
1033 rc = link_schedule_user(l, hdr); in tipc_link_xmit()
1037 l->stats.sent_fragmented++; in tipc_link_xmit()
1038 l->stats.sent_fragments += pkt_cnt; in tipc_link_xmit()
1055 tipc_link_set_skb_retransmit_time(skb, l); in tipc_link_xmit()
1057 TIPC_SKB_CB(skb)->ackers = l->ackers; in tipc_link_xmit()
1058 l->rcv_unacked = 0; in tipc_link_xmit()
1059 l->stats.sent_pkts++; in tipc_link_xmit()
1063 if (tipc_msg_try_bundle(l->backlog[imp].target_bskb, &skb, in tipc_link_xmit()
1064 mss, l->addr, &new_bundle)) { in tipc_link_xmit()
1067 l->backlog[imp].target_bskb = skb; in tipc_link_xmit()
1068 l->backlog[imp].len++; in tipc_link_xmit()
1072 l->stats.sent_bundles++; in tipc_link_xmit()
1073 l->stats.sent_bundled++; in tipc_link_xmit()
1075 l->stats.sent_bundled++; in tipc_link_xmit()
1079 l->backlog[imp].target_bskb = NULL; in tipc_link_xmit()
1080 l->backlog[imp].len += (1 + skb_queue_len(list)); in tipc_link_xmit()
1084 l->snd_nxt = seqno; in tipc_link_xmit()
1088 static void tipc_link_update_cwin(struct tipc_link *l, int released, in tipc_link_update_cwin() argument
1091 int bklog_len = skb_queue_len(&l->backlogq); in tipc_link_update_cwin()
1092 struct sk_buff_head *txq = &l->transmq; in tipc_link_update_cwin()
1094 u16 cwin = l->window; in tipc_link_update_cwin()
1098 l->ssthresh = max_t(u16, l->window / 2, 300); in tipc_link_update_cwin()
1099 l->window = min_t(u16, l->ssthresh, l->window); in tipc_link_update_cwin()
1104 l->ssthresh = max_t(u16, l->window / 2, 300); in tipc_link_update_cwin()
1105 l->window = l->min_win; in tipc_link_update_cwin()
1113 if (txq_len && l->snd_nxt - buf_seqno(skb_peek(txq)) != txq_len) in tipc_link_update_cwin()
1116 l->cong_acks += released; in tipc_link_update_cwin()
1119 if (cwin <= l->ssthresh) { in tipc_link_update_cwin()
1120 l->window = min_t(u16, cwin + released, l->max_win); in tipc_link_update_cwin()
1124 if (l->cong_acks < cwin) in tipc_link_update_cwin()
1126 l->window = min_t(u16, ++cwin, l->max_win); in tipc_link_update_cwin()
1127 l->cong_acks = 0; in tipc_link_update_cwin()
1130 static void tipc_link_advance_backlog(struct tipc_link *l, in tipc_link_advance_backlog() argument
1133 u16 bc_ack = l->bc_rcvlink->rcv_nxt - 1; in tipc_link_advance_backlog()
1134 struct sk_buff_head *txq = &l->transmq; in tipc_link_advance_backlog()
1136 u16 ack = l->rcv_nxt - 1; in tipc_link_advance_backlog()
1137 u16 seqno = l->snd_nxt; in tipc_link_advance_backlog()
1139 u16 cwin = l->window; in tipc_link_advance_backlog()
1143 skb = skb_peek(&l->backlogq); in tipc_link_advance_backlog()
1149 __skb_dequeue(&l->backlogq); in tipc_link_advance_backlog()
1152 l->backlog[imp].len--; in tipc_link_advance_backlog()
1153 if (unlikely(skb == l->backlog[imp].target_bskb)) in tipc_link_advance_backlog()
1154 l->backlog[imp].target_bskb = NULL; in tipc_link_advance_backlog()
1155 __skb_queue_tail(&l->transmq, skb); in tipc_link_advance_backlog()
1156 tipc_link_set_skb_retransmit_time(skb, l); in tipc_link_advance_backlog()
1159 TIPC_SKB_CB(skb)->ackers = l->ackers; in tipc_link_advance_backlog()
1163 l->rcv_unacked = 0; in tipc_link_advance_backlog()
1164 l->stats.sent_pkts++; in tipc_link_advance_backlog()
1167 l->snd_nxt = seqno; in tipc_link_advance_backlog()
1172 * @l: tipc link sender
1173 * @r: tipc link receiver (= l in case of unicast)
1179 static bool link_retransmit_failure(struct tipc_link *l, struct tipc_link *r, in link_retransmit_failure() argument
1182 struct sk_buff *skb = skb_peek(&l->transmq); in link_retransmit_failure()
1196 if (link_is_bc_sndlink(l) && !less(r->acked, msg_seqno(hdr))) in link_retransmit_failure()
1199 pr_warn("Retransmission failure on link <%s>\n", l->name); in link_retransmit_failure()
1200 link_print(l, "State of link "); in link_retransmit_failure()
1209 trace_tipc_list_dump(&l->transmq, true, "retrans failure!"); in link_retransmit_failure()
1210 trace_tipc_link_dump(l, TIPC_DUMP_NONE, "retrans failure!"); in link_retransmit_failure()
1213 if (link_is_bc_sndlink(l)) { in link_retransmit_failure()
1217 *rc |= tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in link_retransmit_failure()
1228 static bool tipc_data_input(struct tipc_link *l, struct sk_buff *skb, in tipc_data_input() argument
1231 struct sk_buff_head *mc_inputq = l->bc_rcvlink->inputq; in tipc_data_input()
1251 l->bc_rcvlink->state = LINK_ESTABLISHED; in tipc_data_input()
1252 skb_queue_tail(l->namedq, skb); in tipc_data_input()
1262 tipc_crypto_msg_rcv(l->net, skb); in tipc_data_input()
1278 static int tipc_link_input(struct tipc_link *l, struct sk_buff *skb, in tipc_link_input() argument
1290 l->stats.recv_bundles++; in tipc_link_input()
1291 l->stats.recv_bundled += msg_msgcnt(hdr); in tipc_link_input()
1293 tipc_data_input(l, iskb, &tmpq); in tipc_link_input()
1297 l->stats.recv_fragments++; in tipc_link_input()
1299 l->stats.recv_fragmented++; in tipc_link_input()
1300 tipc_data_input(l, skb, inputq); in tipc_link_input()
1301 } else if (!*reasm_skb && !link_is_bc_rcvlink(l)) { in tipc_link_input()
1303 return tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_input()
1307 tipc_bcast_lock(l->net); in tipc_link_input()
1308 tipc_link_bc_init_rcv(l->bc_rcvlink, hdr); in tipc_link_input()
1309 tipc_bcast_unlock(l->net); in tipc_link_input()
1319 * @l: tunnel link
1323 static int tipc_link_tnl_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_tnl_rcv() argument
1326 struct sk_buff **reasm_skb = &l->failover_reasm_skb; in tipc_link_tnl_rcv()
1327 struct sk_buff **reasm_tnlmsg = &l->reasm_tnlmsg; in tipc_link_tnl_rcv()
1328 struct sk_buff_head *fdefq = &l->failover_deferdq; in tipc_link_tnl_rcv()
1359 if (*reasm_tnlmsg || link_is_bc_rcvlink(l)) in tipc_link_tnl_rcv()
1362 return tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_tnl_rcv()
1369 if (unlikely(less(seqno, l->drop_point))) { in tipc_link_tnl_rcv()
1373 if (unlikely(seqno != l->drop_point)) { in tipc_link_tnl_rcv()
1378 l->drop_point++; in tipc_link_tnl_rcv()
1379 if (!tipc_data_input(l, iskb, inputq)) in tipc_link_tnl_rcv()
1380 rc |= tipc_link_input(l, iskb, inputq, reasm_skb); in tipc_link_tnl_rcv()
1383 } while ((iskb = __tipc_skb_dequeue(fdefq, l->drop_point))); in tipc_link_tnl_rcv()
1391 * @l: the tipc link
1397 u16 tipc_get_gap_ack_blks(struct tipc_gap_ack_blks **ga, struct tipc_link *l, in tipc_get_gap_ack_blks() argument
1404 if (l->peer_caps & TIPC_GAP_ACK_BLOCK) { in tipc_get_gap_ack_blks()
1429 struct tipc_link *l, u8 start_index) in __tipc_build_gap_ack_blks() argument
1432 struct sk_buff *skb = skb_peek(&l->deferdq); in __tipc_build_gap_ack_blks()
1440 skb_queue_walk(&l->deferdq, skb) { in __tipc_build_gap_ack_blks()
1447 l->name, n, in __tipc_build_gap_ack_blks()
1448 skb_queue_len(&l->deferdq)); in __tipc_build_gap_ack_blks()
1466 * @l: tipc unicast link
1475 static u16 tipc_build_gap_ack_blks(struct tipc_link *l, struct tipc_msg *hdr) in tipc_build_gap_ack_blks() argument
1477 struct tipc_link *bcl = l->bc_rcvlink; in tipc_build_gap_ack_blks()
1492 __tipc_build_gap_ack_blks(ga, l, ga->bgack_cnt) : 0; in tipc_build_gap_ack_blks()
1503 * @l: tipc link with transmq queue to be advanced
1504 * @r: tipc link "receiver" i.e. in case of broadcast (= "l" if unicast)
1515 static int tipc_link_advance_transmq(struct tipc_link *l, struct tipc_link *r, in tipc_link_advance_transmq() argument
1525 u32 qlen = skb_queue_len(&l->transmq); in tipc_link_advance_transmq()
1527 u16 bc_ack = l->bc_rcvlink->rcv_nxt - 1; in tipc_link_advance_transmq()
1528 u16 ack = l->rcv_nxt - 1; in tipc_link_advance_transmq()
1532 bool is_uc = !link_is_bc_sndlink(l); in tipc_link_advance_transmq()
1535 trace_tipc_link_retrans(r, acked + 1, acked + gap, &l->transmq); in tipc_link_advance_transmq()
1558 skb_queue_walk_safe(&l->transmq, skb, tmp) { in tipc_link_advance_transmq()
1593 __skb_unlink(skb, &l->transmq); in tipc_link_advance_transmq()
1598 link_retransmit_failure(l, r, rc))) { in tipc_link_advance_transmq()
1607 tipc_link_set_skb_retransmit_time(skb, l); in tipc_link_advance_transmq()
1616 l->stats.retransmitted++; in tipc_link_advance_transmq()
1663 return qlen - skb_queue_len(&l->transmq); in tipc_link_advance_transmq()
1671 int tipc_link_build_state_msg(struct tipc_link *l, struct sk_buff_head *xmitq) in tipc_link_build_state_msg() argument
1673 if (!l) in tipc_link_build_state_msg()
1677 if (link_is_bc_rcvlink(l)) { in tipc_link_build_state_msg()
1678 if (((l->rcv_nxt ^ tipc_own_addr(l->net)) & 0xf) != 0xf) in tipc_link_build_state_msg()
1680 l->rcv_unacked = 0; in tipc_link_build_state_msg()
1683 l->snd_nxt = l->rcv_nxt; in tipc_link_build_state_msg()
1687 l->rcv_unacked = 0; in tipc_link_build_state_msg()
1688 l->stats.sent_acks++; in tipc_link_build_state_msg()
1689 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, 0, 0, xmitq); in tipc_link_build_state_msg()
1695 void tipc_link_build_reset_msg(struct tipc_link *l, struct sk_buff_head *xmitq) in tipc_link_build_reset_msg() argument
1700 if (l->state == LINK_ESTABLISHING) in tipc_link_build_reset_msg()
1703 tipc_link_build_proto_msg(l, mtyp, 0, 0, 0, 0, 0, xmitq); in tipc_link_build_reset_msg()
1707 if (skb && (l->state == LINK_RESET)) in tipc_link_build_reset_msg()
1715 static int tipc_link_build_nack_msg(struct tipc_link *l, in tipc_link_build_nack_msg() argument
1718 u32 def_cnt = ++l->stats.deferred_recv; in tipc_link_build_nack_msg()
1719 struct sk_buff_head *dfq = &l->deferdq; in tipc_link_build_nack_msg()
1723 if (link_is_bc_rcvlink(l)) { in tipc_link_build_nack_msg()
1725 match2 = tipc_own_addr(l->net) & 0xf; in tipc_link_build_nack_msg()
1732 u16 rcvgap = buf_seqno(skb_peek(dfq)) - l->rcv_nxt; in tipc_link_build_nack_msg()
1734 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, in tipc_link_build_nack_msg()
1741 * @l: the link that should handle the message
1745 int tipc_link_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_rcv() argument
1748 struct sk_buff_head *defq = &l->deferdq; in tipc_link_rcv()
1756 return tipc_link_proto_rcv(l, skb, xmitq); in tipc_link_rcv()
1759 l->silent_intv_cnt = 0; in tipc_link_rcv()
1764 rcv_nxt = l->rcv_nxt; in tipc_link_rcv()
1767 if (unlikely(!link_is_up(l))) { in tipc_link_rcv()
1768 if (l->state == LINK_ESTABLISHING) in tipc_link_rcv()
1776 l->stats.duplicates++; in tipc_link_rcv()
1780 released += tipc_link_advance_transmq(l, l, msg_ack(hdr), 0, in tipc_link_rcv()
1786 l->stats.duplicates++; in tipc_link_rcv()
1787 rc |= tipc_link_build_nack_msg(l, xmitq); in tipc_link_rcv()
1792 l->rcv_nxt++; in tipc_link_rcv()
1793 l->stats.recv_pkts++; in tipc_link_rcv()
1796 rc |= tipc_link_tnl_rcv(l, skb, l->inputq); in tipc_link_rcv()
1797 else if (!tipc_data_input(l, skb, l->inputq)) in tipc_link_rcv()
1798 rc |= tipc_link_input(l, skb, l->inputq, &l->reasm_buf); in tipc_link_rcv()
1799 if (unlikely(++l->rcv_unacked >= TIPC_MIN_LINK_WIN)) in tipc_link_rcv()
1800 rc |= tipc_link_build_state_msg(l, xmitq); in tipc_link_rcv()
1803 } while ((skb = __tipc_skb_dequeue(defq, l->rcv_nxt))); in tipc_link_rcv()
1807 tipc_link_update_cwin(l, released, 0); in tipc_link_rcv()
1808 tipc_link_advance_backlog(l, xmitq); in tipc_link_rcv()
1809 if (unlikely(!skb_queue_empty(&l->wakeupq))) in tipc_link_rcv()
1810 link_prepare_wakeup(l); in tipc_link_rcv()
1815 static void tipc_link_build_proto_msg(struct tipc_link *l, int mtyp, bool probe, in tipc_link_build_proto_msg() argument
1820 struct tipc_mon_state *mstate = &l->mon_state; in tipc_link_build_proto_msg()
1821 struct sk_buff_head *dfq = &l->deferdq; in tipc_link_build_proto_msg()
1822 struct tipc_link *bcl = l->bc_rcvlink; in tipc_link_build_proto_msg()
1831 if (tipc_link_is_blocked(l)) in tipc_link_build_proto_msg()
1834 if (!tipc_link_is_up(l) && (mtyp == STATE_MSG)) in tipc_link_build_proto_msg()
1838 rcvgap = buf_seqno(skb_peek(dfq)) - l->rcv_nxt; in tipc_link_build_proto_msg()
1842 l->addr, tipc_own_addr(l->net), 0, 0, 0); in tipc_link_build_proto_msg()
1848 msg_set_session(hdr, l->session); in tipc_link_build_proto_msg()
1849 msg_set_bearer_id(hdr, l->bearer_id); in tipc_link_build_proto_msg()
1850 msg_set_net_plane(hdr, l->net_plane); in tipc_link_build_proto_msg()
1851 msg_set_next_sent(hdr, l->snd_nxt); in tipc_link_build_proto_msg()
1852 msg_set_ack(hdr, l->rcv_nxt - 1); in tipc_link_build_proto_msg()
1855 msg_set_last_bcast(hdr, l->bc_sndlink->snd_nxt - 1); in tipc_link_build_proto_msg()
1860 msg_set_seqno(hdr, l->snd_nxt + U16_MAX / 2); in tipc_link_build_proto_msg()
1863 if (l->peer_caps & TIPC_LINK_PROTO_SEQNO) in tipc_link_build_proto_msg()
1864 msg_set_seqno(hdr, l->snd_nxt_state++); in tipc_link_build_proto_msg()
1870 if (l->peer_caps & TIPC_GAP_ACK_BLOCK) in tipc_link_build_proto_msg()
1871 glen = tipc_build_gap_ack_blks(l, hdr); in tipc_link_build_proto_msg()
1872 tipc_mon_prep(l->net, data + glen, &dlen, mstate, l->bearer_id); in tipc_link_build_proto_msg()
1875 l->stats.sent_states++; in tipc_link_build_proto_msg()
1876 l->rcv_unacked = 0; in tipc_link_build_proto_msg()
1881 msg_set_dest_session(hdr, l->peer_session); in tipc_link_build_proto_msg()
1883 msg_set_max_pkt(hdr, l->advertised_mtu); in tipc_link_build_proto_msg()
1884 strcpy(data, l->if_name); in tipc_link_build_proto_msg()
1889 l->stats.sent_probes++; in tipc_link_build_proto_msg()
1891 l->stats.sent_nacks++; in tipc_link_build_proto_msg()
1896 trace_tipc_proto_build(skb, false, l->name); in tipc_link_build_proto_msg()
1899 void tipc_link_create_dummy_tnl_msg(struct tipc_link *l, in tipc_link_create_dummy_tnl_msg() argument
1902 u32 onode = tipc_own_addr(l->net); in tipc_link_create_dummy_tnl_msg()
1906 u32 dnode = l->addr; in tipc_link_create_dummy_tnl_msg()
1919 msg_set_bearer_id(hdr, l->peer_bearer_id); in tipc_link_create_dummy_tnl_msg()
1926 tipc_link_xmit(l, &tnlq, xmitq); in tipc_link_create_dummy_tnl_msg()
1932 void tipc_link_tnl_prepare(struct tipc_link *l, struct tipc_link *tnl, in tipc_link_tnl_prepare() argument
1938 struct sk_buff_head *queue = &l->transmq; in tipc_link_tnl_prepare()
1940 u16 pktlen, pktcnt, seqno = l->snd_nxt; in tipc_link_tnl_prepare()
1956 INT_H_SIZE, 0, l->addr, in tipc_link_tnl_prepare()
1957 tipc_own_addr(l->net), in tipc_link_tnl_prepare()
1966 syncpt = l->snd_nxt + skb_queue_len(&l->backlogq) - 1; in tipc_link_tnl_prepare()
1968 msg_set_bearer_id(hdr, l->peer_bearer_id); in tipc_link_tnl_prepare()
1978 BASIC_H_SIZE, 0, l->addr, tipc_own_addr(l->net), in tipc_link_tnl_prepare()
1985 tipc_link_xmit(l, &tnlq, &tmpxq); in tipc_link_tnl_prepare()
1989 tipc_msg_init(tipc_own_addr(l->net), &tnlhdr, TUNNEL_PROTOCOL, in tipc_link_tnl_prepare()
1990 mtyp, INT_H_SIZE, l->addr); in tipc_link_tnl_prepare()
1992 pktcnt = l->snd_nxt - buf_seqno(skb_peek(&l->transmq)); in tipc_link_tnl_prepare()
1994 pktcnt = skb_queue_len(&l->transmq); in tipc_link_tnl_prepare()
1995 pktcnt += skb_queue_len(&l->backlogq); in tipc_link_tnl_prepare()
1997 msg_set_bearer_id(&tnlhdr, l->peer_bearer_id); in tipc_link_tnl_prepare()
2002 if (queue == &l->backlogq) in tipc_link_tnl_prepare()
2048 if (queue != &l->backlogq) { in tipc_link_tnl_prepare()
2049 queue = &l->backlogq; in tipc_link_tnl_prepare()
2062 tnl->drop_point = l->rcv_nxt; in tipc_link_tnl_prepare()
2063 tnl->failover_reasm_skb = l->reasm_buf; in tipc_link_tnl_prepare()
2064 l->reasm_buf = NULL; in tipc_link_tnl_prepare()
2072 skb_queue_splice_init(&l->deferdq, fdefq); in tipc_link_tnl_prepare()
2082 * @l: failover link
2086 void tipc_link_failover_prepare(struct tipc_link *l, struct tipc_link *tnl, in tipc_link_failover_prepare() argument
2113 bool tipc_link_validate_msg(struct tipc_link *l, struct tipc_msg *hdr) in tipc_link_validate_msg() argument
2115 u16 curr_session = l->peer_session; in tipc_link_validate_msg()
2124 if (!l->in_session) in tipc_link_validate_msg()
2129 if (!l->in_session) in tipc_link_validate_msg()
2135 if (!l->in_session) in tipc_link_validate_msg()
2140 if (!link_is_up(l) && msg_ack(hdr)) in tipc_link_validate_msg()
2142 if (!(l->peer_caps & TIPC_LINK_PROTO_SEQNO)) in tipc_link_validate_msg()
2145 return !less(msg_seqno(hdr), l->rcv_nxt_state); in tipc_link_validate_msg()
2156 static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_proto_rcv() argument
2168 u16 rcv_nxt = l->rcv_nxt; in tipc_link_proto_rcv()
2175 trace_tipc_proto_rcv(skb, false, l->name); in tipc_link_proto_rcv()
2180 if (tipc_link_is_blocked(l) || !xmitq) in tipc_link_proto_rcv()
2183 if (tipc_own_addr(l->net) > msg_prevnode(hdr)) in tipc_link_proto_rcv()
2184 l->net_plane = msg_net_plane(hdr); in tipc_link_proto_rcv()
2190 if (!tipc_link_validate_msg(l, hdr)) { in tipc_link_proto_rcv()
2192 trace_tipc_link_dump(l, TIPC_DUMP_NONE, "PROTO invalid (1)!"); in tipc_link_proto_rcv()
2200 if_name = strrchr(l->name, ':') + 1; in tipc_link_proto_rcv()
2201 if (sizeof(l->name) - (if_name - l->name) <= TIPC_MAX_IF_NAME) in tipc_link_proto_rcv()
2209 l->tolerance = peers_tol; in tipc_link_proto_rcv()
2210 l->bc_rcvlink->tolerance = peers_tol; in tipc_link_proto_rcv()
2213 if (in_range(peers_prio, l->priority + 1, TIPC_MAX_LINK_PRI)) in tipc_link_proto_rcv()
2214 l->priority = peers_prio; in tipc_link_proto_rcv()
2218 rc = tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_proto_rcv()
2226 l->session != msg_dest_session(hdr)) { in tipc_link_proto_rcv()
2227 if (less(l->session, msg_dest_session(hdr))) in tipc_link_proto_rcv()
2228 l->session = msg_dest_session(hdr) + 1; in tipc_link_proto_rcv()
2233 if (mtyp == RESET_MSG || !link_is_up(l)) in tipc_link_proto_rcv()
2234 rc = tipc_link_fsm_evt(l, LINK_PEER_RESET_EVT); in tipc_link_proto_rcv()
2237 if (mtyp == ACTIVATE_MSG && l->state == LINK_ESTABLISHING) in tipc_link_proto_rcv()
2240 l->peer_session = msg_session(hdr); in tipc_link_proto_rcv()
2241 l->in_session = true; in tipc_link_proto_rcv()
2242 l->peer_bearer_id = msg_bearer_id(hdr); in tipc_link_proto_rcv()
2243 if (l->mtu > msg_max_pkt(hdr)) in tipc_link_proto_rcv()
2244 l->mtu = msg_max_pkt(hdr); in tipc_link_proto_rcv()
2248 l->rcv_nxt_state = msg_seqno(hdr) + 1; in tipc_link_proto_rcv()
2252 l->tolerance = peers_tol; in tipc_link_proto_rcv()
2253 l->bc_rcvlink->tolerance = peers_tol; in tipc_link_proto_rcv()
2256 if ((peers_prio != l->priority) && in tipc_link_proto_rcv()
2258 l->priority = peers_prio; in tipc_link_proto_rcv()
2259 rc = tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_proto_rcv()
2262 l->silent_intv_cnt = 0; in tipc_link_proto_rcv()
2263 l->stats.recv_states++; in tipc_link_proto_rcv()
2265 l->stats.recv_probes++; in tipc_link_proto_rcv()
2267 if (!link_is_up(l)) { in tipc_link_proto_rcv()
2268 if (l->state == LINK_ESTABLISHING) in tipc_link_proto_rcv()
2274 glen = tipc_get_gap_ack_blks(&ga, l, hdr, true); in tipc_link_proto_rcv()
2277 tipc_mon_rcv(l->net, data + glen, dlen - glen, l->addr, in tipc_link_proto_rcv()
2278 &l->mon_state, l->bearer_id); in tipc_link_proto_rcv()
2283 !tipc_link_is_synching(l) && in tipc_link_proto_rcv()
2284 skb_queue_empty(&l->deferdq)) in tipc_link_proto_rcv()
2285 rcvgap = peers_snd_nxt - l->rcv_nxt; in tipc_link_proto_rcv()
2287 tipc_link_build_proto_msg(l, STATE_MSG, 0, reply, in tipc_link_proto_rcv()
2290 released = tipc_link_advance_transmq(l, l, ack, gap, ga, xmitq, in tipc_link_proto_rcv()
2293 l->stats.recv_nacks++; in tipc_link_proto_rcv()
2295 tipc_link_update_cwin(l, released, retransmitted); in tipc_link_proto_rcv()
2297 tipc_link_advance_backlog(l, xmitq); in tipc_link_proto_rcv()
2298 if (unlikely(!skb_queue_empty(&l->wakeupq))) in tipc_link_proto_rcv()
2299 link_prepare_wakeup(l); in tipc_link_proto_rcv()
2308 static bool tipc_link_build_bc_proto_msg(struct tipc_link *l, bool bcast, in tipc_link_build_bc_proto_msg() argument
2314 struct sk_buff *dfrd_skb = skb_peek(&l->deferdq); in tipc_link_build_bc_proto_msg()
2315 u16 ack = l->rcv_nxt - 1; in tipc_link_build_bc_proto_msg()
2319 0, l->addr, tipc_own_addr(l->net), 0, 0, 0); in tipc_link_build_bc_proto_msg()
2323 msg_set_last_bcast(hdr, l->bc_sndlink->snd_nxt - 1); in tipc_link_build_bc_proto_msg()
2339 static void tipc_link_build_bc_init_msg(struct tipc_link *l, in tipc_link_build_bc_init_msg() argument
2345 if (!tipc_link_build_bc_proto_msg(l->bc_rcvlink, false, 0, &list)) in tipc_link_build_bc_init_msg()
2348 tipc_link_xmit(l, &list, xmitq); in tipc_link_build_bc_init_msg()
2353 void tipc_link_bc_init_rcv(struct tipc_link *l, struct tipc_msg *hdr) in tipc_link_bc_init_rcv() argument
2358 if (link_is_up(l)) in tipc_link_bc_init_rcv()
2362 l->rcv_nxt = peers_snd_nxt; in tipc_link_bc_init_rcv()
2363 l->state = LINK_ESTABLISHED; in tipc_link_bc_init_rcv()
2367 if (l->peer_caps & TIPC_BCAST_SYNCH) in tipc_link_bc_init_rcv()
2375 l->rcv_nxt = peers_snd_nxt; in tipc_link_bc_init_rcv()
2380 int tipc_link_bc_sync_rcv(struct tipc_link *l, struct tipc_msg *hdr, in tipc_link_bc_sync_rcv() argument
2386 if (!link_is_up(l)) in tipc_link_bc_sync_rcv()
2394 l->bc_peer_is_up = true; in tipc_link_bc_sync_rcv()
2396 if (!l->bc_peer_is_up) in tipc_link_bc_sync_rcv()
2400 if (more(peers_snd_nxt, l->rcv_nxt + l->window)) in tipc_link_bc_sync_rcv()
2403 l->snd_nxt = peers_snd_nxt; in tipc_link_bc_sync_rcv()
2404 if (link_bc_rcv_gap(l)) in tipc_link_bc_sync_rcv()
2408 if (l->peer_caps & TIPC_BCAST_STATE_NACK) in tipc_link_bc_sync_rcv()
2413 if (!more(peers_snd_nxt, l->rcv_nxt)) { in tipc_link_bc_sync_rcv()
2414 l->nack_state = BC_NACK_SND_CONDITIONAL; in tipc_link_bc_sync_rcv()
2419 if (l->nack_state == BC_NACK_SND_SUPPRESS) { in tipc_link_bc_sync_rcv()
2420 l->nack_state = BC_NACK_SND_UNCONDITIONAL; in tipc_link_bc_sync_rcv()
2425 if (l->nack_state == BC_NACK_SND_CONDITIONAL) { in tipc_link_bc_sync_rcv()
2426 l->nack_state = BC_NACK_SND_UNCONDITIONAL; in tipc_link_bc_sync_rcv()
2427 if ((peers_snd_nxt - l->rcv_nxt) < TIPC_MIN_LINK_WIN) in tipc_link_bc_sync_rcv()
2432 tipc_link_build_bc_proto_msg(l, true, peers_snd_nxt, xmitq); in tipc_link_bc_sync_rcv()
2433 l->nack_state = BC_NACK_SND_SUPPRESS; in tipc_link_bc_sync_rcv()
2442 struct tipc_link *l = r->bc_sndlink; in tipc_link_bc_ack_rcv() local
2450 l->stats.recv_nacks++; in tipc_link_bc_ack_rcv()
2457 trace_tipc_link_bc_ack(r, acked, gap, &l->transmq); in tipc_link_bc_ack_rcv()
2458 tipc_link_advance_transmq(l, r, acked, gap, ga, retrq, &unused, &rc); in tipc_link_bc_ack_rcv()
2460 tipc_link_advance_backlog(l, xmitq); in tipc_link_bc_ack_rcv()
2461 if (unlikely(!skb_queue_empty(&l->wakeupq))) in tipc_link_bc_ack_rcv()
2462 link_prepare_wakeup(l); in tipc_link_bc_ack_rcv()
2471 int tipc_link_bc_nack_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_bc_nack_rcv() argument
2485 if (!tipc_link_is_up(l) || !l->bc_peer_is_up) in tipc_link_bc_nack_rcv()
2491 if (dnode == tipc_own_addr(l->net)) { in tipc_link_bc_nack_rcv()
2492 rc = tipc_link_bc_ack_rcv(l, acked, to - acked, NULL, xmitq, in tipc_link_bc_nack_rcv()
2494 l->stats.recv_nacks++; in tipc_link_bc_nack_rcv()
2499 if (more(peers_snd_nxt, l->rcv_nxt) && !less(l->rcv_nxt, from)) in tipc_link_bc_nack_rcv()
2500 l->nack_state = BC_NACK_SND_SUPPRESS; in tipc_link_bc_nack_rcv()
2505 void tipc_link_set_queue_limits(struct tipc_link *l, u32 min_win, u32 max_win) in tipc_link_set_queue_limits() argument
2507 int max_bulk = TIPC_MAX_PUBL / (l->mtu / ITEM_SIZE); in tipc_link_set_queue_limits()
2509 l->min_win = min_win; in tipc_link_set_queue_limits()
2510 l->ssthresh = max_win; in tipc_link_set_queue_limits()
2511 l->max_win = max_win; in tipc_link_set_queue_limits()
2512 l->window = min_win; in tipc_link_set_queue_limits()
2513 l->backlog[TIPC_LOW_IMPORTANCE].limit = min_win * 2; in tipc_link_set_queue_limits()
2514 l->backlog[TIPC_MEDIUM_IMPORTANCE].limit = min_win * 4; in tipc_link_set_queue_limits()
2515 l->backlog[TIPC_HIGH_IMPORTANCE].limit = min_win * 6; in tipc_link_set_queue_limits()
2516 l->backlog[TIPC_CRITICAL_IMPORTANCE].limit = min_win * 8; in tipc_link_set_queue_limits()
2517 l->backlog[TIPC_SYSTEM_IMPORTANCE].limit = max_bulk; in tipc_link_set_queue_limits()
2522 * @l: pointer to link
2524 void tipc_link_reset_stats(struct tipc_link *l) in tipc_link_reset_stats() argument
2526 memset(&l->stats, 0, sizeof(l->stats)); in tipc_link_reset_stats()
2529 static void link_print(struct tipc_link *l, const char *str) in link_print() argument
2531 struct sk_buff *hskb = skb_peek(&l->transmq); in link_print()
2532 u16 head = hskb ? msg_seqno(buf_msg(hskb)) : l->snd_nxt - 1; in link_print()
2533 u16 tail = l->snd_nxt - 1; in link_print()
2535 pr_info("%s Link <%s> state %x\n", str, l->name, l->state); in link_print()
2537 skb_queue_len(&l->transmq), head, tail, in link_print()
2538 skb_queue_len(&l->backlogq), l->snd_nxt, l->rcv_nxt); in link_print()
2838 void tipc_link_set_tolerance(struct tipc_link *l, u32 tol, in tipc_link_set_tolerance() argument
2841 l->tolerance = tol; in tipc_link_set_tolerance()
2842 if (l->bc_rcvlink) in tipc_link_set_tolerance()
2843 l->bc_rcvlink->tolerance = tol; in tipc_link_set_tolerance()
2844 if (link_is_up(l)) in tipc_link_set_tolerance()
2845 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, tol, 0, xmitq); in tipc_link_set_tolerance()
2848 void tipc_link_set_prio(struct tipc_link *l, u32 prio, in tipc_link_set_prio() argument
2851 l->priority = prio; in tipc_link_set_prio()
2852 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, 0, prio, xmitq); in tipc_link_set_prio()
2855 void tipc_link_set_abort_limit(struct tipc_link *l, u32 limit) in tipc_link_set_abort_limit() argument
2857 l->abort_limit = limit; in tipc_link_set_abort_limit()
2862 * @l: tipc link to be dumped
2873 int tipc_link_dump(struct tipc_link *l, u16 dqueues, char *buf) in tipc_link_dump() argument
2881 if (!l) { in tipc_link_dump()
2886 i += scnprintf(buf, sz, "link data: %x", l->addr); in tipc_link_dump()
2887 i += scnprintf(buf + i, sz - i, " %x", l->state); in tipc_link_dump()
2888 i += scnprintf(buf + i, sz - i, " %u", l->in_session); in tipc_link_dump()
2889 i += scnprintf(buf + i, sz - i, " %u", l->session); in tipc_link_dump()
2890 i += scnprintf(buf + i, sz - i, " %u", l->peer_session); in tipc_link_dump()
2891 i += scnprintf(buf + i, sz - i, " %u", l->snd_nxt); in tipc_link_dump()
2892 i += scnprintf(buf + i, sz - i, " %u", l->rcv_nxt); in tipc_link_dump()
2893 i += scnprintf(buf + i, sz - i, " %u", l->snd_nxt_state); in tipc_link_dump()
2894 i += scnprintf(buf + i, sz - i, " %u", l->rcv_nxt_state); in tipc_link_dump()
2895 i += scnprintf(buf + i, sz - i, " %x", l->peer_caps); in tipc_link_dump()
2896 i += scnprintf(buf + i, sz - i, " %u", l->silent_intv_cnt); in tipc_link_dump()
2897 i += scnprintf(buf + i, sz - i, " %u", l->rst_cnt); in tipc_link_dump()
2900 i += scnprintf(buf + i, sz - i, " %u", l->acked); in tipc_link_dump()
2902 list = &l->transmq; in tipc_link_dump()
2910 list = &l->deferdq; in tipc_link_dump()
2918 list = &l->backlogq; in tipc_link_dump()
2926 list = l->inputq; in tipc_link_dump()
2936 i += tipc_list_dump(&l->transmq, false, buf + i); in tipc_link_dump()
2941 l->backlog[TIPC_LOW_IMPORTANCE].len, in tipc_link_dump()
2942 l->backlog[TIPC_MEDIUM_IMPORTANCE].len, in tipc_link_dump()
2943 l->backlog[TIPC_HIGH_IMPORTANCE].len, in tipc_link_dump()
2944 l->backlog[TIPC_CRITICAL_IMPORTANCE].len, in tipc_link_dump()
2945 l->backlog[TIPC_SYSTEM_IMPORTANCE].len); in tipc_link_dump()
2946 i += tipc_list_dump(&l->backlogq, false, buf + i); in tipc_link_dump()
2950 i += tipc_list_dump(&l->deferdq, false, buf + i); in tipc_link_dump()
2954 i += tipc_list_dump(l->inputq, false, buf + i); in tipc_link_dump()
2958 i += tipc_list_dump(&l->wakeupq, false, buf + i); in tipc_link_dump()