Lines Matching refs:neigh
57 static void neigh_update_notify(struct neighbour *neigh, u32 nlmsg_pid);
93 static int neigh_blackhole(struct neighbour *neigh, struct sk_buff *skb) in neigh_blackhole() argument
99 static void neigh_cleanup_and_release(struct neighbour *neigh) in neigh_cleanup_and_release() argument
101 trace_neigh_cleanup_and_release(neigh, 0); in neigh_cleanup_and_release()
102 __neigh_notify(neigh, RTM_DELNEIGH, 0, 0); in neigh_cleanup_and_release()
103 call_netevent_notifiers(NETEVENT_NEIGH_UPDATE, neigh); in neigh_cleanup_and_release()
104 neigh_release(neigh); in neigh_cleanup_and_release()
159 static bool neigh_update_ext_learned(struct neighbour *neigh, u32 flags, in neigh_update_ext_learned() argument
169 if ((neigh->flags ^ ndm_flags) & NTF_EXT_LEARNED) { in neigh_update_ext_learned()
171 neigh->flags |= NTF_EXT_LEARNED; in neigh_update_ext_learned()
173 neigh->flags &= ~NTF_EXT_LEARNED; in neigh_update_ext_learned()
188 struct neighbour *neigh; in neigh_del() local
190 neigh = rcu_dereference_protected(n->next, in neigh_del()
192 rcu_assign_pointer(*np, neigh); in neigh_del()
849 void neigh_destroy(struct neighbour *neigh) in neigh_destroy() argument
851 struct net_device *dev = neigh->dev; in neigh_destroy()
853 NEIGH_CACHE_STAT_INC(neigh->tbl, destroys); in neigh_destroy()
855 if (!neigh->dead) { in neigh_destroy()
856 pr_warn("Destroying alive neighbour %p\n", neigh); in neigh_destroy()
861 if (neigh_del_timer(neigh)) in neigh_destroy()
864 write_lock_bh(&neigh->lock); in neigh_destroy()
865 __skb_queue_purge(&neigh->arp_queue); in neigh_destroy()
866 write_unlock_bh(&neigh->lock); in neigh_destroy()
867 neigh->arp_queue_len_bytes = 0; in neigh_destroy()
870 dev->netdev_ops->ndo_neigh_destroy(dev, neigh); in neigh_destroy()
873 neigh_parms_put(neigh->parms); in neigh_destroy()
875 neigh_dbg(2, "neigh %p is destroyed\n", neigh); in neigh_destroy()
877 atomic_dec(&neigh->tbl->entries); in neigh_destroy()
878 kfree_rcu(neigh, rcu); in neigh_destroy()
887 static void neigh_suspect(struct neighbour *neigh) in neigh_suspect() argument
889 neigh_dbg(2, "neigh %p is suspected\n", neigh); in neigh_suspect()
891 neigh->output = neigh->ops->output; in neigh_suspect()
899 static void neigh_connect(struct neighbour *neigh) in neigh_connect() argument
901 neigh_dbg(2, "neigh %p is connected\n", neigh); in neigh_connect()
903 neigh->output = neigh->ops->connected_output; in neigh_connect()
996 static void neigh_invalidate(struct neighbour *neigh) in neigh_invalidate() argument
997 __releases(neigh->lock) in neigh_invalidate()
998 __acquires(neigh->lock) in neigh_invalidate()
1002 NEIGH_CACHE_STAT_INC(neigh->tbl, res_failed); in neigh_invalidate()
1003 neigh_dbg(2, "neigh %p is failed\n", neigh); in neigh_invalidate()
1004 neigh->updated = jiffies; in neigh_invalidate()
1011 while (neigh->nud_state == NUD_FAILED && in neigh_invalidate()
1012 (skb = __skb_dequeue(&neigh->arp_queue)) != NULL) { in neigh_invalidate()
1013 write_unlock(&neigh->lock); in neigh_invalidate()
1014 neigh->ops->error_report(neigh, skb); in neigh_invalidate()
1015 write_lock(&neigh->lock); in neigh_invalidate()
1017 __skb_queue_purge(&neigh->arp_queue); in neigh_invalidate()
1018 neigh->arp_queue_len_bytes = 0; in neigh_invalidate()
1021 static void neigh_probe(struct neighbour *neigh) in neigh_probe() argument
1022 __releases(neigh->lock) in neigh_probe()
1024 struct sk_buff *skb = skb_peek_tail(&neigh->arp_queue); in neigh_probe()
1028 write_unlock(&neigh->lock); in neigh_probe()
1029 if (neigh->ops->solicit) in neigh_probe()
1030 neigh->ops->solicit(neigh, skb); in neigh_probe()
1031 atomic_inc(&neigh->probes); in neigh_probe()
1040 struct neighbour *neigh = from_timer(neigh, t, timer); in neigh_timer_handler() local
1044 write_lock(&neigh->lock); in neigh_timer_handler()
1046 state = neigh->nud_state; in neigh_timer_handler()
1055 neigh->confirmed + neigh->parms->reachable_time)) { in neigh_timer_handler()
1056 neigh_dbg(2, "neigh %p is still alive\n", neigh); in neigh_timer_handler()
1057 next = neigh->confirmed + neigh->parms->reachable_time; in neigh_timer_handler()
1059 neigh->used + in neigh_timer_handler()
1060 NEIGH_VAR(neigh->parms, DELAY_PROBE_TIME))) { in neigh_timer_handler()
1061 neigh_dbg(2, "neigh %p is delayed\n", neigh); in neigh_timer_handler()
1062 neigh->nud_state = NUD_DELAY; in neigh_timer_handler()
1063 neigh->updated = jiffies; in neigh_timer_handler()
1064 neigh_suspect(neigh); in neigh_timer_handler()
1065 next = now + NEIGH_VAR(neigh->parms, DELAY_PROBE_TIME); in neigh_timer_handler()
1067 neigh_dbg(2, "neigh %p is suspected\n", neigh); in neigh_timer_handler()
1068 neigh->nud_state = NUD_STALE; in neigh_timer_handler()
1069 neigh->updated = jiffies; in neigh_timer_handler()
1070 neigh_suspect(neigh); in neigh_timer_handler()
1075 neigh->confirmed + in neigh_timer_handler()
1076 NEIGH_VAR(neigh->parms, DELAY_PROBE_TIME))) { in neigh_timer_handler()
1077 neigh_dbg(2, "neigh %p is now reachable\n", neigh); in neigh_timer_handler()
1078 neigh->nud_state = NUD_REACHABLE; in neigh_timer_handler()
1079 neigh->updated = jiffies; in neigh_timer_handler()
1080 neigh_connect(neigh); in neigh_timer_handler()
1082 next = neigh->confirmed + neigh->parms->reachable_time; in neigh_timer_handler()
1084 neigh_dbg(2, "neigh %p is probed\n", neigh); in neigh_timer_handler()
1085 neigh->nud_state = NUD_PROBE; in neigh_timer_handler()
1086 neigh->updated = jiffies; in neigh_timer_handler()
1087 atomic_set(&neigh->probes, 0); in neigh_timer_handler()
1089 next = now + max(NEIGH_VAR(neigh->parms, RETRANS_TIME), in neigh_timer_handler()
1094 next = now + max(NEIGH_VAR(neigh->parms, RETRANS_TIME), HZ/100); in neigh_timer_handler()
1097 if ((neigh->nud_state & (NUD_INCOMPLETE | NUD_PROBE)) && in neigh_timer_handler()
1098 atomic_read(&neigh->probes) >= neigh_max_probes(neigh)) { in neigh_timer_handler()
1099 neigh->nud_state = NUD_FAILED; in neigh_timer_handler()
1101 neigh_invalidate(neigh); in neigh_timer_handler()
1105 if (neigh->nud_state & NUD_IN_TIMER) { in neigh_timer_handler()
1108 if (!mod_timer(&neigh->timer, next)) in neigh_timer_handler()
1109 neigh_hold(neigh); in neigh_timer_handler()
1111 if (neigh->nud_state & (NUD_INCOMPLETE | NUD_PROBE)) { in neigh_timer_handler()
1112 neigh_probe(neigh); in neigh_timer_handler()
1115 write_unlock(&neigh->lock); in neigh_timer_handler()
1119 neigh_update_notify(neigh, 0); in neigh_timer_handler()
1121 trace_neigh_timer_handler(neigh, 0); in neigh_timer_handler()
1123 neigh_release(neigh); in neigh_timer_handler()
1126 int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb) in __neigh_event_send() argument
1131 write_lock_bh(&neigh->lock); in __neigh_event_send()
1134 if (neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE)) in __neigh_event_send()
1136 if (neigh->dead) in __neigh_event_send()
1139 if (!(neigh->nud_state & (NUD_STALE | NUD_INCOMPLETE))) { in __neigh_event_send()
1140 if (NEIGH_VAR(neigh->parms, MCAST_PROBES) + in __neigh_event_send()
1141 NEIGH_VAR(neigh->parms, APP_PROBES)) { in __neigh_event_send()
1144 atomic_set(&neigh->probes, in __neigh_event_send()
1145 NEIGH_VAR(neigh->parms, UCAST_PROBES)); in __neigh_event_send()
1146 neigh_del_timer(neigh); in __neigh_event_send()
1147 neigh->nud_state = NUD_INCOMPLETE; in __neigh_event_send()
1148 neigh->updated = now; in __neigh_event_send()
1149 next = now + max(NEIGH_VAR(neigh->parms, RETRANS_TIME), in __neigh_event_send()
1151 neigh_add_timer(neigh, next); in __neigh_event_send()
1154 neigh->nud_state = NUD_FAILED; in __neigh_event_send()
1155 neigh->updated = jiffies; in __neigh_event_send()
1156 write_unlock_bh(&neigh->lock); in __neigh_event_send()
1161 } else if (neigh->nud_state & NUD_STALE) { in __neigh_event_send()
1162 neigh_dbg(2, "neigh %p is delayed\n", neigh); in __neigh_event_send()
1163 neigh_del_timer(neigh); in __neigh_event_send()
1164 neigh->nud_state = NUD_DELAY; in __neigh_event_send()
1165 neigh->updated = jiffies; in __neigh_event_send()
1166 neigh_add_timer(neigh, jiffies + in __neigh_event_send()
1167 NEIGH_VAR(neigh->parms, DELAY_PROBE_TIME)); in __neigh_event_send()
1170 if (neigh->nud_state == NUD_INCOMPLETE) { in __neigh_event_send()
1172 while (neigh->arp_queue_len_bytes + skb->truesize > in __neigh_event_send()
1173 NEIGH_VAR(neigh->parms, QUEUE_LEN_BYTES)) { in __neigh_event_send()
1176 buff = __skb_dequeue(&neigh->arp_queue); in __neigh_event_send()
1179 neigh->arp_queue_len_bytes -= buff->truesize; in __neigh_event_send()
1181 NEIGH_CACHE_STAT_INC(neigh->tbl, unres_discards); in __neigh_event_send()
1184 __skb_queue_tail(&neigh->arp_queue, skb); in __neigh_event_send()
1185 neigh->arp_queue_len_bytes += skb->truesize; in __neigh_event_send()
1191 neigh_probe(neigh); in __neigh_event_send()
1193 write_unlock(&neigh->lock); in __neigh_event_send()
1195 trace_neigh_event_send_done(neigh, rc); in __neigh_event_send()
1199 if (neigh->nud_state & NUD_STALE) in __neigh_event_send()
1201 write_unlock_bh(&neigh->lock); in __neigh_event_send()
1203 trace_neigh_event_send_dead(neigh, 1); in __neigh_event_send()
1208 static void neigh_update_hhs(struct neighbour *neigh) in neigh_update_hhs() argument
1214 if (neigh->dev->header_ops) in neigh_update_hhs()
1215 update = neigh->dev->header_ops->cache_update; in neigh_update_hhs()
1218 hh = &neigh->hh; in neigh_update_hhs()
1221 update(hh, neigh->dev, neigh->ha); in neigh_update_hhs()
1248 static int __neigh_update(struct neighbour *neigh, const u8 *lladdr, in __neigh_update() argument
1259 trace_neigh_update(neigh, lladdr, new, flags, nlmsg_pid); in __neigh_update()
1261 write_lock_bh(&neigh->lock); in __neigh_update()
1263 dev = neigh->dev; in __neigh_update()
1264 old = neigh->nud_state; in __neigh_update()
1267 if (neigh->dead) { in __neigh_update()
1276 ext_learn_change = neigh_update_ext_learned(neigh, flags, ¬ify); in __neigh_update()
1279 neigh->nud_state = new; in __neigh_update()
1285 neigh_del_timer(neigh); in __neigh_update()
1287 neigh_suspect(neigh); in __neigh_update()
1288 neigh->nud_state = new; in __neigh_update()
1293 neigh_invalidate(neigh); in __neigh_update()
1302 lladdr = neigh->ha; in __neigh_update()
1310 !memcmp(lladdr, neigh->ha, dev->addr_len)) in __neigh_update()
1311 lladdr = neigh->ha; in __neigh_update()
1321 lladdr = neigh->ha; in __neigh_update()
1328 neigh->confirmed = jiffies; in __neigh_update()
1336 if (lladdr != neigh->ha && !(flags & NEIGH_UPDATE_F_OVERRIDE)) { in __neigh_update()
1340 lladdr = neigh->ha; in __neigh_update()
1345 if (lladdr == neigh->ha && new == NUD_STALE && in __neigh_update()
1355 if (new != old || lladdr != neigh->ha) in __neigh_update()
1356 neigh->updated = jiffies; in __neigh_update()
1359 neigh_del_timer(neigh); in __neigh_update()
1361 atomic_set(&neigh->probes, 0); in __neigh_update()
1363 neigh_add_timer(neigh, (jiffies + in __neigh_update()
1365 neigh->parms->reachable_time : in __neigh_update()
1367 neigh->nud_state = new; in __neigh_update()
1371 if (lladdr != neigh->ha) { in __neigh_update()
1372 write_seqlock(&neigh->ha_lock); in __neigh_update()
1373 memcpy(&neigh->ha, lladdr, dev->addr_len); in __neigh_update()
1374 write_sequnlock(&neigh->ha_lock); in __neigh_update()
1375 neigh_update_hhs(neigh); in __neigh_update()
1377 neigh->confirmed = jiffies - in __neigh_update()
1378 (NEIGH_VAR(neigh->parms, BASE_REACHABLE_TIME) << 1); in __neigh_update()
1384 neigh_connect(neigh); in __neigh_update()
1386 neigh_suspect(neigh); in __neigh_update()
1392 while (neigh->nud_state & NUD_VALID && in __neigh_update()
1393 (skb = __skb_dequeue(&neigh->arp_queue)) != NULL) { in __neigh_update()
1395 struct neighbour *n2, *n1 = neigh; in __neigh_update()
1396 write_unlock_bh(&neigh->lock); in __neigh_update()
1418 write_lock_bh(&neigh->lock); in __neigh_update()
1420 __skb_queue_purge(&neigh->arp_queue); in __neigh_update()
1421 neigh->arp_queue_len_bytes = 0; in __neigh_update()
1425 neigh_update_is_router(neigh, flags, ¬ify); in __neigh_update()
1426 write_unlock_bh(&neigh->lock); in __neigh_update()
1429 neigh_update_gc_list(neigh); in __neigh_update()
1432 neigh_update_notify(neigh, nlmsg_pid); in __neigh_update()
1434 trace_neigh_update_done(neigh, err); in __neigh_update()
1439 int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new, in neigh_update() argument
1442 return __neigh_update(neigh, lladdr, new, flags, nlmsg_pid, NULL); in neigh_update()
1449 void __neigh_set_probe_once(struct neighbour *neigh) in __neigh_set_probe_once() argument
1451 if (neigh->dead) in __neigh_set_probe_once()
1453 neigh->updated = jiffies; in __neigh_set_probe_once()
1454 if (!(neigh->nud_state & NUD_FAILED)) in __neigh_set_probe_once()
1456 neigh->nud_state = NUD_INCOMPLETE; in __neigh_set_probe_once()
1457 atomic_set(&neigh->probes, neigh_max_probes(neigh)); in __neigh_set_probe_once()
1458 neigh_add_timer(neigh, in __neigh_set_probe_once()
1459 jiffies + max(NEIGH_VAR(neigh->parms, RETRANS_TIME), in __neigh_set_probe_once()
1468 struct neighbour *neigh = __neigh_lookup(tbl, saddr, dev, in neigh_event_ns() local
1470 if (neigh) in neigh_event_ns()
1471 neigh_update(neigh, lladdr, NUD_STALE, in neigh_event_ns()
1473 return neigh; in neigh_event_ns()
1497 int neigh_resolve_output(struct neighbour *neigh, struct sk_buff *skb) in neigh_resolve_output() argument
1501 if (!neigh_event_send(neigh, skb)) { in neigh_resolve_output()
1503 struct net_device *dev = neigh->dev; in neigh_resolve_output()
1506 if (dev->header_ops->cache && !READ_ONCE(neigh->hh.hh_len)) in neigh_resolve_output()
1507 neigh_hh_init(neigh); in neigh_resolve_output()
1511 seq = read_seqbegin(&neigh->ha_lock); in neigh_resolve_output()
1513 neigh->ha, NULL, skb->len); in neigh_resolve_output()
1514 } while (read_seqretry(&neigh->ha_lock, seq)); in neigh_resolve_output()
1532 int neigh_connected_output(struct neighbour *neigh, struct sk_buff *skb) in neigh_connected_output() argument
1534 struct net_device *dev = neigh->dev; in neigh_connected_output()
1540 seq = read_seqbegin(&neigh->ha_lock); in neigh_connected_output()
1542 neigh->ha, NULL, skb->len); in neigh_connected_output()
1543 } while (read_seqretry(&neigh->ha_lock, seq)); in neigh_connected_output()
1555 int neigh_direct_output(struct neighbour *neigh, struct sk_buff *skb) in neigh_direct_output() argument
1824 struct neighbour *neigh; in neigh_delete() local
1864 neigh = neigh_lookup(tbl, nla_data(dst_attr), dev); in neigh_delete()
1865 if (neigh == NULL) { in neigh_delete()
1870 err = __neigh_update(neigh, NULL, NUD_FAILED, in neigh_delete()
1874 neigh_release(neigh); in neigh_delete()
1875 neigh_remove_one(neigh, tbl); in neigh_delete()
1892 struct neighbour *neigh; in neigh_add() local
1962 neigh = neigh_lookup(tbl, dst, dev); in neigh_add()
1963 if (neigh == NULL) { in neigh_add()
1973 neigh = ___neigh_create(tbl, dst, dev, in neigh_add()
1976 if (IS_ERR(neigh)) { in neigh_add()
1977 err = PTR_ERR(neigh); in neigh_add()
1983 neigh_release(neigh); in neigh_add()
1993 neigh->protocol = protocol; in neigh_add()
2001 err = __neigh_update(neigh, lladdr, ndm->ndm_state, flags, in neigh_add()
2004 neigh_event_send(neigh, NULL); in neigh_add()
2007 neigh_release(neigh); in neigh_add()
2455 static int neigh_fill_info(struct sk_buff *skb, struct neighbour *neigh, in neigh_fill_info() argument
2468 ndm->ndm_family = neigh->ops->family; in neigh_fill_info()
2471 ndm->ndm_flags = neigh->flags; in neigh_fill_info()
2472 ndm->ndm_type = neigh->type; in neigh_fill_info()
2473 ndm->ndm_ifindex = neigh->dev->ifindex; in neigh_fill_info()
2475 if (nla_put(skb, NDA_DST, neigh->tbl->key_len, neigh->primary_key)) in neigh_fill_info()
2478 read_lock_bh(&neigh->lock); in neigh_fill_info()
2479 ndm->ndm_state = neigh->nud_state; in neigh_fill_info()
2480 if (neigh->nud_state & NUD_VALID) { in neigh_fill_info()
2483 neigh_ha_snapshot(haddr, neigh, neigh->dev); in neigh_fill_info()
2484 if (nla_put(skb, NDA_LLADDR, neigh->dev->addr_len, haddr) < 0) { in neigh_fill_info()
2485 read_unlock_bh(&neigh->lock); in neigh_fill_info()
2490 ci.ndm_used = jiffies_to_clock_t(now - neigh->used); in neigh_fill_info()
2491 ci.ndm_confirmed = jiffies_to_clock_t(now - neigh->confirmed); in neigh_fill_info()
2492 ci.ndm_updated = jiffies_to_clock_t(now - neigh->updated); in neigh_fill_info()
2493 ci.ndm_refcnt = refcount_read(&neigh->refcnt) - 1; in neigh_fill_info()
2494 read_unlock_bh(&neigh->lock); in neigh_fill_info()
2496 if (nla_put_u32(skb, NDA_PROBES, atomic_read(&neigh->probes)) || in neigh_fill_info()
2500 if (neigh->protocol && nla_put_u8(skb, NDA_PROTOCOL, neigh->protocol)) in neigh_fill_info()
2545 static void neigh_update_notify(struct neighbour *neigh, u32 nlmsg_pid) in neigh_update_notify() argument
2547 call_netevent_notifiers(NETEVENT_NEIGH_UPDATE, neigh); in neigh_update_notify()
2548 __neigh_notify(neigh, RTM_NEWNEIGH, 0, nlmsg_pid); in neigh_update_notify()
2847 static int neigh_get_reply(struct net *net, struct neighbour *neigh, in neigh_get_reply() argument
2857 err = neigh_fill_info(skb, neigh, pid, seq, RTM_NEWNEIGH, 0); in neigh_get_reply()
2875 static int pneigh_get_reply(struct net *net, struct pneigh_entry *neigh, in pneigh_get_reply() argument
2885 err = pneigh_fill_info(skb, neigh, pid, seq, RTM_NEWNEIGH, 0, tbl); in pneigh_get_reply()
2902 struct neighbour *neigh; in neigh_get() local
2943 neigh = neigh_lookup(tbl, dst, dev); in neigh_get()
2944 if (!neigh) { in neigh_get()
2949 err = neigh_get_reply(net, neigh, NETLINK_CB(in_skb).portid, in neigh_get()
2952 neigh_release(neigh); in neigh_get()
3020 struct neighbour *neigh; in neigh_xmit() local
3029 neigh = __ipv4_neigh_lookup_noref(dev, key); in neigh_xmit()
3031 neigh = __neigh_lookup_noref(tbl, addr, dev); in neigh_xmit()
3033 if (!neigh) in neigh_xmit()
3034 neigh = __neigh_create(tbl, addr, dev, false); in neigh_xmit()
3035 err = PTR_ERR(neigh); in neigh_xmit()
3036 if (IS_ERR(neigh)) { in neigh_xmit()
3040 err = neigh->output(neigh, skb); in neigh_xmit()