Lines Matching refs: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 struct net *tipc_link_net(struct tipc_link *l) in tipc_link_net() argument
349 return l->net; in tipc_link_net()
352 void tipc_link_update_caps(struct tipc_link *l, u16 capabilities) in tipc_link_update_caps() argument
354 l->peer_caps = capabilities; in tipc_link_update_caps()
390 int tipc_link_bc_peers(struct tipc_link *l) in tipc_link_bc_peers() argument
392 return l->ackers; in tipc_link_bc_peers()
395 static u16 link_bc_rcv_gap(struct tipc_link *l) in link_bc_rcv_gap() argument
397 struct sk_buff *skb = skb_peek(&l->deferdq); in link_bc_rcv_gap()
400 if (more(l->snd_nxt, l->rcv_nxt)) in link_bc_rcv_gap()
401 gap = l->snd_nxt - l->rcv_nxt; in link_bc_rcv_gap()
403 gap = buf_seqno(skb) - l->rcv_nxt; in link_bc_rcv_gap()
407 void tipc_link_set_mtu(struct tipc_link *l, int mtu) in tipc_link_set_mtu() argument
409 l->mtu = mtu; in tipc_link_set_mtu()
412 int tipc_link_mtu(struct tipc_link *l) in tipc_link_mtu() argument
414 return l->mtu; in tipc_link_mtu()
417 int tipc_link_mss(struct tipc_link *l) in tipc_link_mss() argument
420 return l->mtu - INT_H_SIZE - EMSG_OVERHEAD; in tipc_link_mss()
422 return l->mtu - INT_H_SIZE; in tipc_link_mss()
426 u16 tipc_link_rcv_nxt(struct tipc_link *l) in tipc_link_rcv_nxt() argument
428 return l->rcv_nxt; in tipc_link_rcv_nxt()
431 u16 tipc_link_acked(struct tipc_link *l) in tipc_link_acked() argument
433 return l->acked; in tipc_link_acked()
436 char *tipc_link_name(struct tipc_link *l) in tipc_link_name() argument
438 return l->name; in tipc_link_name()
441 u32 tipc_link_state(struct tipc_link *l) in tipc_link_state() argument
443 return l->state; in tipc_link_state()
481 struct tipc_link *l; in tipc_link_create() local
483 l = kzalloc(sizeof(*l), GFP_ATOMIC); in tipc_link_create()
484 if (!l) in tipc_link_create()
486 *link = l; in tipc_link_create()
487 l->session = session; in tipc_link_create()
499 snprintf(l->name, sizeof(l->name), "%s:%s-%s:unknown", in tipc_link_create()
502 strcpy(l->if_name, if_name); in tipc_link_create()
503 l->addr = peer; in tipc_link_create()
504 l->peer_caps = peer_caps; in tipc_link_create()
505 l->net = net; in tipc_link_create()
506 l->in_session = false; in tipc_link_create()
507 l->bearer_id = bearer_id; in tipc_link_create()
508 l->tolerance = tolerance; in tipc_link_create()
511 l->net_plane = net_plane; in tipc_link_create()
512 l->advertised_mtu = mtu; in tipc_link_create()
513 l->mtu = mtu; in tipc_link_create()
514 l->priority = priority; in tipc_link_create()
515 tipc_link_set_queue_limits(l, min_win, max_win); in tipc_link_create()
516 l->ackers = 1; in tipc_link_create()
517 l->bc_sndlink = bc_sndlink; in tipc_link_create()
518 l->bc_rcvlink = bc_rcvlink; in tipc_link_create()
519 l->inputq = inputq; in tipc_link_create()
520 l->namedq = namedq; in tipc_link_create()
521 l->state = LINK_RESETTING; in tipc_link_create()
522 __skb_queue_head_init(&l->transmq); in tipc_link_create()
523 __skb_queue_head_init(&l->backlogq); in tipc_link_create()
524 __skb_queue_head_init(&l->deferdq); in tipc_link_create()
525 __skb_queue_head_init(&l->failover_deferdq); in tipc_link_create()
526 skb_queue_head_init(&l->wakeupq); in tipc_link_create()
527 skb_queue_head_init(l->inputq); in tipc_link_create()
550 struct tipc_link *l; in tipc_link_bc_create() local
557 l = *link; in tipc_link_bc_create()
565 snprintf(l->name, sizeof(l->name), "%s:%s", tipc_bclink_name, in tipc_link_bc_create()
568 strcpy(l->name, tipc_bclink_name); in tipc_link_bc_create()
570 trace_tipc_link_reset(l, TIPC_DUMP_ALL, "bclink created!"); in tipc_link_bc_create()
571 tipc_link_reset(l); in tipc_link_bc_create()
572 l->state = LINK_RESET; in tipc_link_bc_create()
573 l->ackers = 0; in tipc_link_bc_create()
574 l->bc_rcvlink = l; in tipc_link_bc_create()
577 if (link_is_bc_sndlink(l)) in tipc_link_bc_create()
578 l->state = LINK_ESTABLISHED; in tipc_link_bc_create()
581 if (link_is_bc_rcvlink(l) && !(peer_caps & TIPC_BCAST_RCAST)) in tipc_link_bc_create()
592 int tipc_link_fsm_evt(struct tipc_link *l, int evt) in tipc_link_fsm_evt() argument
595 int old_state = l->state; in tipc_link_fsm_evt()
597 switch (l->state) { in tipc_link_fsm_evt()
601 l->state = LINK_PEER_RESET; in tipc_link_fsm_evt()
604 l->state = LINK_RESET; in tipc_link_fsm_evt()
619 l->state = LINK_ESTABLISHING; in tipc_link_fsm_evt()
622 l->state = LINK_FAILINGOVER; in tipc_link_fsm_evt()
637 l->state = LINK_ESTABLISHING; in tipc_link_fsm_evt()
654 l->state = LINK_RESET; in tipc_link_fsm_evt()
671 l->state = LINK_ESTABLISHED; in tipc_link_fsm_evt()
674 l->state = LINK_FAILINGOVER; in tipc_link_fsm_evt()
677 l->state = LINK_RESET; in tipc_link_fsm_evt()
692 l->state = LINK_PEER_RESET; in tipc_link_fsm_evt()
696 l->state = LINK_RESETTING; in tipc_link_fsm_evt()
700 l->state = LINK_RESET; in tipc_link_fsm_evt()
706 l->state = LINK_SYNCHING; in tipc_link_fsm_evt()
717 l->state = LINK_PEER_RESET; in tipc_link_fsm_evt()
721 l->state = LINK_RESETTING; in tipc_link_fsm_evt()
725 l->state = LINK_RESET; in tipc_link_fsm_evt()
731 l->state = LINK_ESTABLISHED; in tipc_link_fsm_evt()
740 pr_err("Unknown FSM state %x in %s\n", 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()
746 evt, l->state, l->name); in tipc_link_fsm_evt()
747 trace_tipc_link_fsm(l->name, old_state, l->state, evt); in tipc_link_fsm_evt()
753 static void link_profile_stats(struct tipc_link *l) in link_profile_stats() argument
760 l->stats.accu_queue_sz += skb_queue_len(&l->transmq); in link_profile_stats()
761 l->stats.queue_sz_counts++; in link_profile_stats()
763 skb = skb_peek(&l->transmq); in link_profile_stats()
774 l->stats.msg_lengths_total += length; in link_profile_stats()
775 l->stats.msg_length_counts++; in link_profile_stats()
777 l->stats.msg_length_profile[0]++; in link_profile_stats()
779 l->stats.msg_length_profile[1]++; in link_profile_stats()
781 l->stats.msg_length_profile[2]++; in link_profile_stats()
783 l->stats.msg_length_profile[3]++; in link_profile_stats()
785 l->stats.msg_length_profile[4]++; in link_profile_stats()
787 l->stats.msg_length_profile[5]++; in link_profile_stats()
789 l->stats.msg_length_profile[6]++; in link_profile_stats()
799 bool tipc_link_too_silent(struct tipc_link *l) in tipc_link_too_silent() argument
801 return (l->silent_intv_cnt + 2 > l->abort_limit); in tipc_link_too_silent()
806 int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq) in tipc_link_timeout() argument
813 u16 bc_snt = l->bc_sndlink->snd_nxt - 1; in tipc_link_timeout()
814 u16 bc_acked = l->bc_rcvlink->acked; in tipc_link_timeout()
815 struct tipc_mon_state *mstate = &l->mon_state; in tipc_link_timeout()
817 trace_tipc_link_timeout(l, TIPC_DUMP_NONE, " "); in tipc_link_timeout()
818 trace_tipc_link_too_silent(l, TIPC_DUMP_ALL, " "); in tipc_link_timeout()
819 switch (l->state) { in tipc_link_timeout()
823 link_profile_stats(l); in tipc_link_timeout()
824 tipc_mon_get_state(l->net, l->addr, mstate, l->bearer_id); in tipc_link_timeout()
825 if (mstate->reset || (l->silent_intv_cnt > l->abort_limit)) in tipc_link_timeout()
826 return tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_timeout()
828 state |= l->bc_rcvlink->rcv_unacked; in tipc_link_timeout()
829 state |= l->rcv_unacked; in tipc_link_timeout()
830 state |= !skb_queue_empty(&l->transmq); in tipc_link_timeout()
832 probe |= l->silent_intv_cnt; in tipc_link_timeout()
834 l->silent_intv_cnt++; in tipc_link_timeout()
835 probe |= !skb_queue_empty(&l->deferdq); in tipc_link_timeout()
836 if (l->snd_nxt == l->checkpoint) { in tipc_link_timeout()
837 tipc_link_update_cwin(l, 0, 0); in tipc_link_timeout()
840 l->checkpoint = l->snd_nxt; in tipc_link_timeout()
843 setup = l->rst_cnt++ <= 4; in tipc_link_timeout()
844 setup |= !(l->rst_cnt % 16); in tipc_link_timeout()
860 tipc_link_build_proto_msg(l, mtyp, probe, 0, 0, 0, 0, xmitq); in tipc_link_timeout()
871 static int link_schedule_user(struct tipc_link *l, struct tipc_msg *hdr) in link_schedule_user() argument
873 u32 dnode = tipc_own_addr(l->net); in link_schedule_user()
879 dnode, l->addr, dport, 0, 0); in link_schedule_user()
884 skb_queue_tail(&l->wakeupq, skb); in link_schedule_user()
885 l->stats.link_congs++; in link_schedule_user()
886 trace_tipc_link_conges(l, TIPC_DUMP_ALL, "wakeup scheduled!"); in link_schedule_user()
896 static void link_prepare_wakeup(struct tipc_link *l) in link_prepare_wakeup() argument
898 struct sk_buff_head *wakeupq = &l->wakeupq; in link_prepare_wakeup()
899 struct sk_buff_head *inputq = l->inputq; in link_prepare_wakeup()
908 avail[imp] = l->backlog[imp].limit - l->backlog[imp].len; in link_prepare_wakeup()
932 struct tipc_link *l) in tipc_link_set_skb_retransmit_time() argument
934 if (link_is_bc_sndlink(l)) in tipc_link_set_skb_retransmit_time()
940 void tipc_link_reset(struct tipc_link *l) in tipc_link_reset() argument
947 l->in_session = false; in tipc_link_reset()
949 l->peer_session--; in tipc_link_reset()
950 l->session++; in tipc_link_reset()
951 l->mtu = l->advertised_mtu; in tipc_link_reset()
953 spin_lock_bh(&l->wakeupq.lock); in tipc_link_reset()
954 skb_queue_splice_init(&l->wakeupq, &list); in tipc_link_reset()
955 spin_unlock_bh(&l->wakeupq.lock); in tipc_link_reset()
957 spin_lock_bh(&l->inputq->lock); in tipc_link_reset()
958 skb_queue_splice_init(&list, l->inputq); in tipc_link_reset()
959 spin_unlock_bh(&l->inputq->lock); in tipc_link_reset()
961 __skb_queue_purge(&l->transmq); in tipc_link_reset()
962 __skb_queue_purge(&l->deferdq); in tipc_link_reset()
963 __skb_queue_purge(&l->backlogq); in tipc_link_reset()
964 __skb_queue_purge(&l->failover_deferdq); in tipc_link_reset()
966 l->backlog[imp].len = 0; in tipc_link_reset()
967 l->backlog[imp].target_bskb = NULL; in tipc_link_reset()
969 kfree_skb(l->reasm_buf); in tipc_link_reset()
970 kfree_skb(l->reasm_tnlmsg); in tipc_link_reset()
971 kfree_skb(l->failover_reasm_skb); in tipc_link_reset()
972 l->reasm_buf = NULL; in tipc_link_reset()
973 l->reasm_tnlmsg = NULL; in tipc_link_reset()
974 l->failover_reasm_skb = NULL; in tipc_link_reset()
975 l->rcv_unacked = 0; in tipc_link_reset()
976 l->snd_nxt = 1; in tipc_link_reset()
977 l->rcv_nxt = 1; in tipc_link_reset()
978 l->snd_nxt_state = 1; in tipc_link_reset()
979 l->rcv_nxt_state = 1; in tipc_link_reset()
980 l->acked = 0; in tipc_link_reset()
981 l->last_gap = 0; in tipc_link_reset()
982 kfree(l->last_ga); in tipc_link_reset()
983 l->last_ga = NULL; in tipc_link_reset()
984 l->silent_intv_cnt = 0; in tipc_link_reset()
985 l->rst_cnt = 0; in tipc_link_reset()
986 l->bc_peer_is_up = false; in tipc_link_reset()
987 memset(&l->mon_state, 0, sizeof(l->mon_state)); in tipc_link_reset()
988 tipc_link_reset_stats(l); in tipc_link_reset()
1001 int tipc_link_xmit(struct tipc_link *l, struct sk_buff_head *list, in tipc_link_xmit() argument
1004 struct sk_buff_head *backlogq = &l->backlogq; in tipc_link_xmit()
1005 struct sk_buff_head *transmq = &l->transmq; in tipc_link_xmit()
1007 u16 bc_ack = l->bc_rcvlink->rcv_nxt - 1; in tipc_link_xmit()
1008 u16 ack = l->rcv_nxt - 1; in tipc_link_xmit()
1009 u16 seqno = l->snd_nxt; in tipc_link_xmit()
1011 unsigned int mss = tipc_link_mss(l); in tipc_link_xmit()
1012 unsigned int cwin = l->window; in tipc_link_xmit()
1013 unsigned int mtu = l->mtu; in tipc_link_xmit()
1033 if (unlikely(l->backlog[imp].len >= l->backlog[imp].limit)) { in tipc_link_xmit()
1035 pr_warn("%s<%s>, link overflow", link_rst_msg, l->name); in tipc_link_xmit()
1038 rc = link_schedule_user(l, hdr); in tipc_link_xmit()
1042 l->stats.sent_fragmented++; in tipc_link_xmit()
1043 l->stats.sent_fragments += pkt_cnt; in tipc_link_xmit()
1060 tipc_link_set_skb_retransmit_time(skb, l); in tipc_link_xmit()
1062 TIPC_SKB_CB(skb)->ackers = l->ackers; in tipc_link_xmit()
1063 l->rcv_unacked = 0; in tipc_link_xmit()
1064 l->stats.sent_pkts++; in tipc_link_xmit()
1068 if (tipc_msg_try_bundle(l->backlog[imp].target_bskb, &skb, in tipc_link_xmit()
1069 mss, l->addr, &new_bundle)) { in tipc_link_xmit()
1072 l->backlog[imp].target_bskb = skb; in tipc_link_xmit()
1073 l->backlog[imp].len++; in tipc_link_xmit()
1077 l->stats.sent_bundles++; in tipc_link_xmit()
1078 l->stats.sent_bundled++; in tipc_link_xmit()
1080 l->stats.sent_bundled++; in tipc_link_xmit()
1084 l->backlog[imp].target_bskb = NULL; in tipc_link_xmit()
1085 l->backlog[imp].len += (1 + skb_queue_len(list)); in tipc_link_xmit()
1089 l->snd_nxt = seqno; in tipc_link_xmit()
1093 static void tipc_link_update_cwin(struct tipc_link *l, int released, in tipc_link_update_cwin() argument
1096 int bklog_len = skb_queue_len(&l->backlogq); in tipc_link_update_cwin()
1097 struct sk_buff_head *txq = &l->transmq; in tipc_link_update_cwin()
1099 u16 cwin = l->window; in tipc_link_update_cwin()
1103 l->ssthresh = max_t(u16, l->window / 2, 300); in tipc_link_update_cwin()
1104 l->window = min_t(u16, l->ssthresh, l->window); in tipc_link_update_cwin()
1109 l->ssthresh = max_t(u16, l->window / 2, 300); in tipc_link_update_cwin()
1110 l->window = l->min_win; in tipc_link_update_cwin()
1118 if (txq_len && l->snd_nxt - buf_seqno(skb_peek(txq)) != txq_len) in tipc_link_update_cwin()
1121 l->cong_acks += released; in tipc_link_update_cwin()
1124 if (cwin <= l->ssthresh) { in tipc_link_update_cwin()
1125 l->window = min_t(u16, cwin + released, l->max_win); in tipc_link_update_cwin()
1129 if (l->cong_acks < cwin) in tipc_link_update_cwin()
1131 l->window = min_t(u16, ++cwin, l->max_win); in tipc_link_update_cwin()
1132 l->cong_acks = 0; in tipc_link_update_cwin()
1135 static void tipc_link_advance_backlog(struct tipc_link *l, in tipc_link_advance_backlog() argument
1138 u16 bc_ack = l->bc_rcvlink->rcv_nxt - 1; in tipc_link_advance_backlog()
1139 struct sk_buff_head *txq = &l->transmq; in tipc_link_advance_backlog()
1141 u16 ack = l->rcv_nxt - 1; in tipc_link_advance_backlog()
1142 u16 seqno = l->snd_nxt; in tipc_link_advance_backlog()
1144 u16 cwin = l->window; in tipc_link_advance_backlog()
1148 skb = skb_peek(&l->backlogq); in tipc_link_advance_backlog()
1154 __skb_dequeue(&l->backlogq); in tipc_link_advance_backlog()
1157 l->backlog[imp].len--; in tipc_link_advance_backlog()
1158 if (unlikely(skb == l->backlog[imp].target_bskb)) in tipc_link_advance_backlog()
1159 l->backlog[imp].target_bskb = NULL; in tipc_link_advance_backlog()
1160 __skb_queue_tail(&l->transmq, skb); in tipc_link_advance_backlog()
1161 tipc_link_set_skb_retransmit_time(skb, l); in tipc_link_advance_backlog()
1164 TIPC_SKB_CB(skb)->ackers = l->ackers; in tipc_link_advance_backlog()
1168 l->rcv_unacked = 0; in tipc_link_advance_backlog()
1169 l->stats.sent_pkts++; in tipc_link_advance_backlog()
1172 l->snd_nxt = seqno; in tipc_link_advance_backlog()
1184 static bool link_retransmit_failure(struct tipc_link *l, struct tipc_link *r, in link_retransmit_failure() argument
1187 struct sk_buff *skb = skb_peek(&l->transmq); in link_retransmit_failure()
1201 if (link_is_bc_sndlink(l) && !less(r->acked, msg_seqno(hdr))) in link_retransmit_failure()
1204 pr_warn("Retransmission failure on link <%s>\n", l->name); in link_retransmit_failure()
1205 link_print(l, "State of link "); in link_retransmit_failure()
1214 trace_tipc_list_dump(&l->transmq, true, "retrans failure!"); in link_retransmit_failure()
1215 trace_tipc_link_dump(l, TIPC_DUMP_NONE, "retrans failure!"); in link_retransmit_failure()
1218 if (link_is_bc_sndlink(l)) { in link_retransmit_failure()
1222 *rc |= tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in link_retransmit_failure()
1233 static bool tipc_data_input(struct tipc_link *l, struct sk_buff *skb, in tipc_data_input() argument
1236 struct sk_buff_head *mc_inputq = l->bc_rcvlink->inputq; in tipc_data_input()
1256 l->bc_rcvlink->state = LINK_ESTABLISHED; in tipc_data_input()
1257 skb_queue_tail(l->namedq, skb); in tipc_data_input()
1267 tipc_crypto_msg_rcv(l->net, skb); in tipc_data_input()
1283 static int tipc_link_input(struct tipc_link *l, struct sk_buff *skb, in tipc_link_input() argument
1295 l->stats.recv_bundles++; in tipc_link_input()
1296 l->stats.recv_bundled += msg_msgcnt(hdr); in tipc_link_input()
1298 tipc_data_input(l, iskb, &tmpq); in tipc_link_input()
1302 l->stats.recv_fragments++; in tipc_link_input()
1304 l->stats.recv_fragmented++; in tipc_link_input()
1305 tipc_data_input(l, skb, inputq); in tipc_link_input()
1306 } else if (!*reasm_skb && !link_is_bc_rcvlink(l)) { in tipc_link_input()
1308 return tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_input()
1312 tipc_bcast_lock(l->net); in tipc_link_input()
1313 tipc_link_bc_init_rcv(l->bc_rcvlink, hdr); in tipc_link_input()
1314 tipc_bcast_unlock(l->net); in tipc_link_input()
1328 static int tipc_link_tnl_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_tnl_rcv() argument
1331 struct sk_buff **reasm_skb = &l->failover_reasm_skb; in tipc_link_tnl_rcv()
1332 struct sk_buff **reasm_tnlmsg = &l->reasm_tnlmsg; in tipc_link_tnl_rcv()
1333 struct sk_buff_head *fdefq = &l->failover_deferdq; in tipc_link_tnl_rcv()
1364 if (*reasm_tnlmsg || link_is_bc_rcvlink(l)) in tipc_link_tnl_rcv()
1367 return tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_tnl_rcv()
1374 if (unlikely(less(seqno, l->drop_point))) { in tipc_link_tnl_rcv()
1378 if (unlikely(seqno != l->drop_point)) { in tipc_link_tnl_rcv()
1383 l->drop_point++; in tipc_link_tnl_rcv()
1384 if (!tipc_data_input(l, iskb, inputq)) in tipc_link_tnl_rcv()
1385 rc |= tipc_link_input(l, iskb, inputq, reasm_skb); in tipc_link_tnl_rcv()
1388 } while ((iskb = __tipc_skb_dequeue(fdefq, l->drop_point))); in tipc_link_tnl_rcv()
1402 u16 tipc_get_gap_ack_blks(struct tipc_gap_ack_blks **ga, struct tipc_link *l, in tipc_get_gap_ack_blks() argument
1409 if (l->peer_caps & TIPC_GAP_ACK_BLOCK) { in tipc_get_gap_ack_blks()
1434 struct tipc_link *l, u8 start_index) in __tipc_build_gap_ack_blks() argument
1437 struct sk_buff *skb = skb_peek(&l->deferdq); in __tipc_build_gap_ack_blks()
1445 skb_queue_walk(&l->deferdq, skb) { in __tipc_build_gap_ack_blks()
1452 l->name, n, in __tipc_build_gap_ack_blks()
1453 skb_queue_len(&l->deferdq)); in __tipc_build_gap_ack_blks()
1480 static u16 tipc_build_gap_ack_blks(struct tipc_link *l, struct tipc_msg *hdr) in tipc_build_gap_ack_blks() argument
1482 struct tipc_link *bcl = l->bc_rcvlink; in tipc_build_gap_ack_blks()
1497 __tipc_build_gap_ack_blks(ga, l, ga->bgack_cnt) : 0; in tipc_build_gap_ack_blks()
1520 static int tipc_link_advance_transmq(struct tipc_link *l, struct tipc_link *r, in tipc_link_advance_transmq() argument
1530 u32 qlen = skb_queue_len(&l->transmq); in tipc_link_advance_transmq()
1532 u16 bc_ack = l->bc_rcvlink->rcv_nxt - 1; in tipc_link_advance_transmq()
1533 u16 ack = l->rcv_nxt - 1; in tipc_link_advance_transmq()
1537 bool is_uc = !link_is_bc_sndlink(l); in tipc_link_advance_transmq()
1540 trace_tipc_link_retrans(r, acked + 1, acked + gap, &l->transmq); in tipc_link_advance_transmq()
1563 skb_queue_walk_safe(&l->transmq, skb, tmp) { in tipc_link_advance_transmq()
1598 __skb_unlink(skb, &l->transmq); in tipc_link_advance_transmq()
1603 link_retransmit_failure(l, r, rc))) { in tipc_link_advance_transmq()
1612 tipc_link_set_skb_retransmit_time(skb, l); in tipc_link_advance_transmq()
1621 l->stats.retransmitted++; in tipc_link_advance_transmq()
1668 return qlen - skb_queue_len(&l->transmq); in tipc_link_advance_transmq()
1676 int tipc_link_build_state_msg(struct tipc_link *l, struct sk_buff_head *xmitq) in tipc_link_build_state_msg() argument
1678 if (!l) in tipc_link_build_state_msg()
1682 if (link_is_bc_rcvlink(l)) { in tipc_link_build_state_msg()
1683 if (((l->rcv_nxt ^ tipc_own_addr(l->net)) & 0xf) != 0xf) in tipc_link_build_state_msg()
1685 l->rcv_unacked = 0; in tipc_link_build_state_msg()
1688 l->snd_nxt = l->rcv_nxt; in tipc_link_build_state_msg()
1692 l->rcv_unacked = 0; in tipc_link_build_state_msg()
1693 l->stats.sent_acks++; in tipc_link_build_state_msg()
1694 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, 0, 0, xmitq); in tipc_link_build_state_msg()
1700 void tipc_link_build_reset_msg(struct tipc_link *l, struct sk_buff_head *xmitq) in tipc_link_build_reset_msg() argument
1705 if (l->state == LINK_ESTABLISHING) in tipc_link_build_reset_msg()
1708 tipc_link_build_proto_msg(l, mtyp, 0, 0, 0, 0, 0, xmitq); in tipc_link_build_reset_msg()
1712 if (skb && (l->state == LINK_RESET)) in tipc_link_build_reset_msg()
1720 static int tipc_link_build_nack_msg(struct tipc_link *l, in tipc_link_build_nack_msg() argument
1723 u32 def_cnt = ++l->stats.deferred_recv; in tipc_link_build_nack_msg()
1724 struct sk_buff_head *dfq = &l->deferdq; in tipc_link_build_nack_msg()
1728 if (link_is_bc_rcvlink(l)) { in tipc_link_build_nack_msg()
1730 match2 = tipc_own_addr(l->net) & 0xf; in tipc_link_build_nack_msg()
1737 u16 rcvgap = buf_seqno(skb_peek(dfq)) - l->rcv_nxt; in tipc_link_build_nack_msg()
1739 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, in tipc_link_build_nack_msg()
1750 int tipc_link_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_rcv() argument
1753 struct sk_buff_head *defq = &l->deferdq; in tipc_link_rcv()
1761 return tipc_link_proto_rcv(l, skb, xmitq); in tipc_link_rcv()
1764 l->silent_intv_cnt = 0; in tipc_link_rcv()
1769 rcv_nxt = l->rcv_nxt; in tipc_link_rcv()
1772 if (unlikely(!link_is_up(l))) { in tipc_link_rcv()
1773 if (l->state == LINK_ESTABLISHING) in tipc_link_rcv()
1781 l->stats.duplicates++; in tipc_link_rcv()
1785 released += tipc_link_advance_transmq(l, l, msg_ack(hdr), 0, in tipc_link_rcv()
1791 l->stats.duplicates++; in tipc_link_rcv()
1792 rc |= tipc_link_build_nack_msg(l, xmitq); in tipc_link_rcv()
1797 l->rcv_nxt++; in tipc_link_rcv()
1798 l->stats.recv_pkts++; in tipc_link_rcv()
1801 rc |= tipc_link_tnl_rcv(l, skb, l->inputq); in tipc_link_rcv()
1802 else if (!tipc_data_input(l, skb, l->inputq)) in tipc_link_rcv()
1803 rc |= tipc_link_input(l, skb, l->inputq, &l->reasm_buf); in tipc_link_rcv()
1804 if (unlikely(++l->rcv_unacked >= TIPC_MIN_LINK_WIN)) in tipc_link_rcv()
1805 rc |= tipc_link_build_state_msg(l, xmitq); in tipc_link_rcv()
1808 } while ((skb = __tipc_skb_dequeue(defq, l->rcv_nxt))); in tipc_link_rcv()
1812 tipc_link_update_cwin(l, released, 0); in tipc_link_rcv()
1813 tipc_link_advance_backlog(l, xmitq); in tipc_link_rcv()
1814 if (unlikely(!skb_queue_empty(&l->wakeupq))) in tipc_link_rcv()
1815 link_prepare_wakeup(l); in tipc_link_rcv()
1820 static void tipc_link_build_proto_msg(struct tipc_link *l, int mtyp, bool probe, in tipc_link_build_proto_msg() argument
1825 struct tipc_mon_state *mstate = &l->mon_state; in tipc_link_build_proto_msg()
1826 struct sk_buff_head *dfq = &l->deferdq; in tipc_link_build_proto_msg()
1827 struct tipc_link *bcl = l->bc_rcvlink; in tipc_link_build_proto_msg()
1836 if (tipc_link_is_blocked(l)) in tipc_link_build_proto_msg()
1839 if (!tipc_link_is_up(l) && (mtyp == STATE_MSG)) in tipc_link_build_proto_msg()
1843 rcvgap = buf_seqno(skb_peek(dfq)) - l->rcv_nxt; in tipc_link_build_proto_msg()
1847 l->addr, tipc_own_addr(l->net), 0, 0, 0); in tipc_link_build_proto_msg()
1853 msg_set_session(hdr, l->session); in tipc_link_build_proto_msg()
1854 msg_set_bearer_id(hdr, l->bearer_id); in tipc_link_build_proto_msg()
1855 msg_set_net_plane(hdr, l->net_plane); in tipc_link_build_proto_msg()
1856 msg_set_next_sent(hdr, l->snd_nxt); in tipc_link_build_proto_msg()
1857 msg_set_ack(hdr, l->rcv_nxt - 1); in tipc_link_build_proto_msg()
1860 msg_set_last_bcast(hdr, l->bc_sndlink->snd_nxt - 1); in tipc_link_build_proto_msg()
1865 msg_set_seqno(hdr, l->snd_nxt + U16_MAX / 2); in tipc_link_build_proto_msg()
1868 if (l->peer_caps & TIPC_LINK_PROTO_SEQNO) in tipc_link_build_proto_msg()
1869 msg_set_seqno(hdr, l->snd_nxt_state++); in tipc_link_build_proto_msg()
1875 if (l->peer_caps & TIPC_GAP_ACK_BLOCK) in tipc_link_build_proto_msg()
1876 glen = tipc_build_gap_ack_blks(l, hdr); in tipc_link_build_proto_msg()
1877 tipc_mon_prep(l->net, data + glen, &dlen, mstate, l->bearer_id); in tipc_link_build_proto_msg()
1880 l->stats.sent_states++; in tipc_link_build_proto_msg()
1881 l->rcv_unacked = 0; in tipc_link_build_proto_msg()
1886 msg_set_dest_session(hdr, l->peer_session); in tipc_link_build_proto_msg()
1888 msg_set_max_pkt(hdr, l->advertised_mtu); in tipc_link_build_proto_msg()
1889 strcpy(data, l->if_name); in tipc_link_build_proto_msg()
1894 l->stats.sent_probes++; in tipc_link_build_proto_msg()
1896 l->stats.sent_nacks++; in tipc_link_build_proto_msg()
1901 trace_tipc_proto_build(skb, false, l->name); in tipc_link_build_proto_msg()
1904 void tipc_link_create_dummy_tnl_msg(struct tipc_link *l, in tipc_link_create_dummy_tnl_msg() argument
1907 u32 onode = tipc_own_addr(l->net); in tipc_link_create_dummy_tnl_msg()
1911 u32 dnode = l->addr; in tipc_link_create_dummy_tnl_msg()
1924 msg_set_bearer_id(hdr, l->peer_bearer_id); in tipc_link_create_dummy_tnl_msg()
1931 tipc_link_xmit(l, &tnlq, xmitq); in tipc_link_create_dummy_tnl_msg()
1937 void tipc_link_tnl_prepare(struct tipc_link *l, struct tipc_link *tnl, in tipc_link_tnl_prepare() argument
1943 struct sk_buff_head *queue = &l->transmq; in tipc_link_tnl_prepare()
1945 u16 pktlen, pktcnt, seqno = l->snd_nxt; in tipc_link_tnl_prepare()
1961 INT_H_SIZE, 0, l->addr, in tipc_link_tnl_prepare()
1962 tipc_own_addr(l->net), in tipc_link_tnl_prepare()
1971 syncpt = l->snd_nxt + skb_queue_len(&l->backlogq) - 1; in tipc_link_tnl_prepare()
1973 msg_set_bearer_id(hdr, l->peer_bearer_id); in tipc_link_tnl_prepare()
1983 BASIC_H_SIZE, 0, l->addr, tipc_own_addr(l->net), in tipc_link_tnl_prepare()
1990 tipc_link_xmit(l, &tnlq, &tmpxq); in tipc_link_tnl_prepare()
1994 tipc_msg_init(tipc_own_addr(l->net), &tnlhdr, TUNNEL_PROTOCOL, in tipc_link_tnl_prepare()
1995 mtyp, INT_H_SIZE, l->addr); in tipc_link_tnl_prepare()
1997 pktcnt = l->snd_nxt - buf_seqno(skb_peek(&l->transmq)); in tipc_link_tnl_prepare()
1999 pktcnt = skb_queue_len(&l->transmq); in tipc_link_tnl_prepare()
2000 pktcnt += skb_queue_len(&l->backlogq); in tipc_link_tnl_prepare()
2002 msg_set_bearer_id(&tnlhdr, l->peer_bearer_id); in tipc_link_tnl_prepare()
2007 if (queue == &l->backlogq) in tipc_link_tnl_prepare()
2053 if (queue != &l->backlogq) { in tipc_link_tnl_prepare()
2054 queue = &l->backlogq; in tipc_link_tnl_prepare()
2067 tnl->drop_point = l->rcv_nxt; in tipc_link_tnl_prepare()
2068 tnl->failover_reasm_skb = l->reasm_buf; in tipc_link_tnl_prepare()
2069 l->reasm_buf = NULL; in tipc_link_tnl_prepare()
2077 skb_queue_splice_init(&l->deferdq, fdefq); in tipc_link_tnl_prepare()
2091 void tipc_link_failover_prepare(struct tipc_link *l, struct tipc_link *tnl, in tipc_link_failover_prepare() argument
2118 bool tipc_link_validate_msg(struct tipc_link *l, struct tipc_msg *hdr) in tipc_link_validate_msg() argument
2120 u16 curr_session = l->peer_session; in tipc_link_validate_msg()
2129 if (!l->in_session) in tipc_link_validate_msg()
2134 if (!l->in_session) in tipc_link_validate_msg()
2140 if (!l->in_session) in tipc_link_validate_msg()
2145 if (!link_is_up(l) && msg_ack(hdr)) in tipc_link_validate_msg()
2147 if (!(l->peer_caps & TIPC_LINK_PROTO_SEQNO)) in tipc_link_validate_msg()
2150 return !less(msg_seqno(hdr), l->rcv_nxt_state); in tipc_link_validate_msg()
2161 static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_proto_rcv() argument
2173 u16 rcv_nxt = l->rcv_nxt; in tipc_link_proto_rcv()
2180 trace_tipc_proto_rcv(skb, false, l->name); in tipc_link_proto_rcv()
2185 if (tipc_link_is_blocked(l) || !xmitq) in tipc_link_proto_rcv()
2188 if (tipc_own_addr(l->net) > msg_prevnode(hdr)) in tipc_link_proto_rcv()
2189 l->net_plane = msg_net_plane(hdr); in tipc_link_proto_rcv()
2197 if (!tipc_link_validate_msg(l, hdr)) { in tipc_link_proto_rcv()
2199 trace_tipc_link_dump(l, TIPC_DUMP_NONE, "PROTO invalid (1)!"); in tipc_link_proto_rcv()
2207 if (msg_max < tipc_bearer_min_mtu(l->net, l->bearer_id)) in tipc_link_proto_rcv()
2210 if_name = strrchr(l->name, ':') + 1; in tipc_link_proto_rcv()
2211 if (sizeof(l->name) - (if_name - l->name) <= TIPC_MAX_IF_NAME) in tipc_link_proto_rcv()
2219 l->tolerance = peers_tol; in tipc_link_proto_rcv()
2220 l->bc_rcvlink->tolerance = peers_tol; in tipc_link_proto_rcv()
2223 if (in_range(peers_prio, l->priority + 1, TIPC_MAX_LINK_PRI)) in tipc_link_proto_rcv()
2224 l->priority = peers_prio; in tipc_link_proto_rcv()
2228 rc = tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_proto_rcv()
2236 l->session != msg_dest_session(hdr)) { in tipc_link_proto_rcv()
2237 if (less(l->session, msg_dest_session(hdr))) in tipc_link_proto_rcv()
2238 l->session = msg_dest_session(hdr) + 1; in tipc_link_proto_rcv()
2243 if (mtyp == RESET_MSG || !link_is_up(l)) in tipc_link_proto_rcv()
2244 rc = tipc_link_fsm_evt(l, LINK_PEER_RESET_EVT); in tipc_link_proto_rcv()
2247 if (mtyp == ACTIVATE_MSG && l->state == LINK_ESTABLISHING) in tipc_link_proto_rcv()
2250 l->peer_session = msg_session(hdr); in tipc_link_proto_rcv()
2251 l->in_session = true; in tipc_link_proto_rcv()
2252 l->peer_bearer_id = msg_bearer_id(hdr); in tipc_link_proto_rcv()
2253 if (l->mtu > msg_max) in tipc_link_proto_rcv()
2254 l->mtu = msg_max; in tipc_link_proto_rcv()
2259 glen = tipc_get_gap_ack_blks(&ga, l, hdr, true); in tipc_link_proto_rcv()
2263 l->rcv_nxt_state = msg_seqno(hdr) + 1; in tipc_link_proto_rcv()
2267 l->tolerance = peers_tol; in tipc_link_proto_rcv()
2268 l->bc_rcvlink->tolerance = peers_tol; in tipc_link_proto_rcv()
2271 if ((peers_prio != l->priority) && in tipc_link_proto_rcv()
2273 l->priority = peers_prio; in tipc_link_proto_rcv()
2274 rc = tipc_link_fsm_evt(l, LINK_FAILURE_EVT); in tipc_link_proto_rcv()
2277 l->silent_intv_cnt = 0; in tipc_link_proto_rcv()
2278 l->stats.recv_states++; in tipc_link_proto_rcv()
2280 l->stats.recv_probes++; in tipc_link_proto_rcv()
2282 if (!link_is_up(l)) { in tipc_link_proto_rcv()
2283 if (l->state == LINK_ESTABLISHING) in tipc_link_proto_rcv()
2288 tipc_mon_rcv(l->net, data + glen, dlen - glen, l->addr, in tipc_link_proto_rcv()
2289 &l->mon_state, l->bearer_id); in tipc_link_proto_rcv()
2294 !tipc_link_is_synching(l) && in tipc_link_proto_rcv()
2295 skb_queue_empty(&l->deferdq)) in tipc_link_proto_rcv()
2296 rcvgap = peers_snd_nxt - l->rcv_nxt; in tipc_link_proto_rcv()
2298 tipc_link_build_proto_msg(l, STATE_MSG, 0, reply, in tipc_link_proto_rcv()
2301 released = tipc_link_advance_transmq(l, l, ack, gap, ga, xmitq, in tipc_link_proto_rcv()
2304 l->stats.recv_nacks++; in tipc_link_proto_rcv()
2306 tipc_link_update_cwin(l, released, retransmitted); in tipc_link_proto_rcv()
2308 tipc_link_advance_backlog(l, xmitq); in tipc_link_proto_rcv()
2309 if (unlikely(!skb_queue_empty(&l->wakeupq))) in tipc_link_proto_rcv()
2310 link_prepare_wakeup(l); in tipc_link_proto_rcv()
2319 static bool tipc_link_build_bc_proto_msg(struct tipc_link *l, bool bcast, in tipc_link_build_bc_proto_msg() argument
2325 struct sk_buff *dfrd_skb = skb_peek(&l->deferdq); in tipc_link_build_bc_proto_msg()
2326 u16 ack = l->rcv_nxt - 1; in tipc_link_build_bc_proto_msg()
2330 0, l->addr, tipc_own_addr(l->net), 0, 0, 0); in tipc_link_build_bc_proto_msg()
2334 msg_set_last_bcast(hdr, l->bc_sndlink->snd_nxt - 1); in tipc_link_build_bc_proto_msg()
2350 static void tipc_link_build_bc_init_msg(struct tipc_link *l, in tipc_link_build_bc_init_msg() argument
2356 if (!tipc_link_build_bc_proto_msg(l->bc_rcvlink, false, 0, &list)) in tipc_link_build_bc_init_msg()
2359 tipc_link_xmit(l, &list, xmitq); in tipc_link_build_bc_init_msg()
2364 void tipc_link_bc_init_rcv(struct tipc_link *l, struct tipc_msg *hdr) in tipc_link_bc_init_rcv() argument
2369 if (link_is_up(l)) in tipc_link_bc_init_rcv()
2373 l->rcv_nxt = peers_snd_nxt; in tipc_link_bc_init_rcv()
2374 l->state = LINK_ESTABLISHED; in tipc_link_bc_init_rcv()
2378 if (l->peer_caps & TIPC_BCAST_SYNCH) in tipc_link_bc_init_rcv()
2386 l->rcv_nxt = peers_snd_nxt; in tipc_link_bc_init_rcv()
2391 int tipc_link_bc_sync_rcv(struct tipc_link *l, struct tipc_msg *hdr, in tipc_link_bc_sync_rcv() argument
2397 if (!link_is_up(l)) in tipc_link_bc_sync_rcv()
2405 l->bc_peer_is_up = true; in tipc_link_bc_sync_rcv()
2407 if (!l->bc_peer_is_up) in tipc_link_bc_sync_rcv()
2411 if (more(peers_snd_nxt, l->rcv_nxt + l->window)) in tipc_link_bc_sync_rcv()
2414 l->snd_nxt = peers_snd_nxt; in tipc_link_bc_sync_rcv()
2415 if (link_bc_rcv_gap(l)) in tipc_link_bc_sync_rcv()
2419 if (l->peer_caps & TIPC_BCAST_STATE_NACK) in tipc_link_bc_sync_rcv()
2424 if (!more(peers_snd_nxt, l->rcv_nxt)) { in tipc_link_bc_sync_rcv()
2425 l->nack_state = BC_NACK_SND_CONDITIONAL; in tipc_link_bc_sync_rcv()
2430 if (l->nack_state == BC_NACK_SND_SUPPRESS) { in tipc_link_bc_sync_rcv()
2431 l->nack_state = BC_NACK_SND_UNCONDITIONAL; in tipc_link_bc_sync_rcv()
2436 if (l->nack_state == BC_NACK_SND_CONDITIONAL) { in tipc_link_bc_sync_rcv()
2437 l->nack_state = BC_NACK_SND_UNCONDITIONAL; in tipc_link_bc_sync_rcv()
2438 if ((peers_snd_nxt - l->rcv_nxt) < TIPC_MIN_LINK_WIN) in tipc_link_bc_sync_rcv()
2443 tipc_link_build_bc_proto_msg(l, true, peers_snd_nxt, xmitq); in tipc_link_bc_sync_rcv()
2444 l->nack_state = BC_NACK_SND_SUPPRESS; in tipc_link_bc_sync_rcv()
2453 struct tipc_link *l = r->bc_sndlink; in tipc_link_bc_ack_rcv() local
2461 l->stats.recv_nacks++; in tipc_link_bc_ack_rcv()
2468 trace_tipc_link_bc_ack(r, acked, gap, &l->transmq); in tipc_link_bc_ack_rcv()
2469 tipc_link_advance_transmq(l, r, acked, gap, ga, retrq, &unused, &rc); in tipc_link_bc_ack_rcv()
2471 tipc_link_advance_backlog(l, xmitq); in tipc_link_bc_ack_rcv()
2472 if (unlikely(!skb_queue_empty(&l->wakeupq))) in tipc_link_bc_ack_rcv()
2473 link_prepare_wakeup(l); in tipc_link_bc_ack_rcv()
2482 int tipc_link_bc_nack_rcv(struct tipc_link *l, struct sk_buff *skb, in tipc_link_bc_nack_rcv() argument
2496 if (!tipc_link_is_up(l) || !l->bc_peer_is_up) in tipc_link_bc_nack_rcv()
2502 if (dnode == tipc_own_addr(l->net)) { in tipc_link_bc_nack_rcv()
2503 rc = tipc_link_bc_ack_rcv(l, acked, to - acked, NULL, xmitq, in tipc_link_bc_nack_rcv()
2505 l->stats.recv_nacks++; in tipc_link_bc_nack_rcv()
2510 if (more(peers_snd_nxt, l->rcv_nxt) && !less(l->rcv_nxt, from)) in tipc_link_bc_nack_rcv()
2511 l->nack_state = BC_NACK_SND_SUPPRESS; in tipc_link_bc_nack_rcv()
2516 void tipc_link_set_queue_limits(struct tipc_link *l, u32 min_win, u32 max_win) in tipc_link_set_queue_limits() argument
2518 int max_bulk = TIPC_MAX_PUBL / (l->mtu / ITEM_SIZE); in tipc_link_set_queue_limits()
2520 l->min_win = min_win; in tipc_link_set_queue_limits()
2521 l->ssthresh = max_win; in tipc_link_set_queue_limits()
2522 l->max_win = max_win; in tipc_link_set_queue_limits()
2523 l->window = min_win; in tipc_link_set_queue_limits()
2524 l->backlog[TIPC_LOW_IMPORTANCE].limit = min_win * 2; in tipc_link_set_queue_limits()
2525 l->backlog[TIPC_MEDIUM_IMPORTANCE].limit = min_win * 4; in tipc_link_set_queue_limits()
2526 l->backlog[TIPC_HIGH_IMPORTANCE].limit = min_win * 6; in tipc_link_set_queue_limits()
2527 l->backlog[TIPC_CRITICAL_IMPORTANCE].limit = min_win * 8; in tipc_link_set_queue_limits()
2528 l->backlog[TIPC_SYSTEM_IMPORTANCE].limit = max_bulk; in tipc_link_set_queue_limits()
2535 void tipc_link_reset_stats(struct tipc_link *l) in tipc_link_reset_stats() argument
2537 memset(&l->stats, 0, sizeof(l->stats)); in tipc_link_reset_stats()
2540 static void link_print(struct tipc_link *l, const char *str) in link_print() argument
2542 struct sk_buff *hskb = skb_peek(&l->transmq); in link_print()
2543 u16 head = hskb ? msg_seqno(buf_msg(hskb)) : l->snd_nxt - 1; in link_print()
2544 u16 tail = l->snd_nxt - 1; in link_print()
2546 pr_info("%s Link <%s> state %x\n", str, l->name, l->state); in link_print()
2548 skb_queue_len(&l->transmq), head, tail, in link_print()
2549 skb_queue_len(&l->backlogq), l->snd_nxt, l->rcv_nxt); in link_print()
2849 void tipc_link_set_tolerance(struct tipc_link *l, u32 tol, in tipc_link_set_tolerance() argument
2852 l->tolerance = tol; in tipc_link_set_tolerance()
2853 if (l->bc_rcvlink) in tipc_link_set_tolerance()
2854 l->bc_rcvlink->tolerance = tol; in tipc_link_set_tolerance()
2855 if (link_is_up(l)) in tipc_link_set_tolerance()
2856 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, tol, 0, xmitq); in tipc_link_set_tolerance()
2859 void tipc_link_set_prio(struct tipc_link *l, u32 prio, in tipc_link_set_prio() argument
2862 l->priority = prio; in tipc_link_set_prio()
2863 tipc_link_build_proto_msg(l, STATE_MSG, 0, 0, 0, 0, prio, xmitq); in tipc_link_set_prio()
2866 void tipc_link_set_abort_limit(struct tipc_link *l, u32 limit) in tipc_link_set_abort_limit() argument
2868 l->abort_limit = limit; in tipc_link_set_abort_limit()
2884 int tipc_link_dump(struct tipc_link *l, u16 dqueues, char *buf) in tipc_link_dump() argument
2892 if (!l) { in tipc_link_dump()
2897 i += scnprintf(buf, sz, "link data: %x", l->addr); in tipc_link_dump()
2898 i += scnprintf(buf + i, sz - i, " %x", l->state); in tipc_link_dump()
2899 i += scnprintf(buf + i, sz - i, " %u", l->in_session); in tipc_link_dump()
2900 i += scnprintf(buf + i, sz - i, " %u", l->session); in tipc_link_dump()
2901 i += scnprintf(buf + i, sz - i, " %u", l->peer_session); in tipc_link_dump()
2902 i += scnprintf(buf + i, sz - i, " %u", l->snd_nxt); in tipc_link_dump()
2903 i += scnprintf(buf + i, sz - i, " %u", l->rcv_nxt); in tipc_link_dump()
2904 i += scnprintf(buf + i, sz - i, " %u", l->snd_nxt_state); in tipc_link_dump()
2905 i += scnprintf(buf + i, sz - i, " %u", l->rcv_nxt_state); in tipc_link_dump()
2906 i += scnprintf(buf + i, sz - i, " %x", l->peer_caps); in tipc_link_dump()
2907 i += scnprintf(buf + i, sz - i, " %u", l->silent_intv_cnt); in tipc_link_dump()
2908 i += scnprintf(buf + i, sz - i, " %u", l->rst_cnt); in tipc_link_dump()
2911 i += scnprintf(buf + i, sz - i, " %u", l->acked); in tipc_link_dump()
2913 list = &l->transmq; in tipc_link_dump()
2921 list = &l->deferdq; in tipc_link_dump()
2929 list = &l->backlogq; in tipc_link_dump()
2937 list = l->inputq; in tipc_link_dump()
2947 i += tipc_list_dump(&l->transmq, false, buf + i); in tipc_link_dump()
2952 l->backlog[TIPC_LOW_IMPORTANCE].len, in tipc_link_dump()
2953 l->backlog[TIPC_MEDIUM_IMPORTANCE].len, in tipc_link_dump()
2954 l->backlog[TIPC_HIGH_IMPORTANCE].len, in tipc_link_dump()
2955 l->backlog[TIPC_CRITICAL_IMPORTANCE].len, in tipc_link_dump()
2956 l->backlog[TIPC_SYSTEM_IMPORTANCE].len); in tipc_link_dump()
2957 i += tipc_list_dump(&l->backlogq, false, buf + i); in tipc_link_dump()
2961 i += tipc_list_dump(&l->deferdq, false, buf + i); in tipc_link_dump()
2965 i += tipc_list_dump(l->inputq, false, buf + i); in tipc_link_dump()
2969 i += tipc_list_dump(&l->wakeupq, false, buf + i); in tipc_link_dump()