diff options
Diffstat (limited to 'nest')
| -rw-r--r-- | nest/route.h | 1 | ||||
| -rw-r--r-- | nest/rt-table.c | 51 |
2 files changed, 45 insertions, 7 deletions
diff --git a/nest/route.h b/nest/route.h index 7a683f9e..93afae57 100644 --- a/nest/route.h +++ b/nest/route.h @@ -151,6 +151,7 @@ typedef struct rtable { uint addr_type; /* Type of address data stored in table (NET_*) */ int pipe_busy; /* Pipe loop detection */ int use_count; /* Number of protocols using this table */ + u32 rt_count; /* Number of routes in the table */ struct hostcache *hostcache; struct rtable_config *config; /* Configuration of this table */ struct config *deleted; /* Table doesn't exist in current configuration, diff --git a/nest/rt-table.c b/nest/rt-table.c index 5beb1be9..ae4bb74d 100644 --- a/nest/rt-table.c +++ b/nest/rt-table.c @@ -1044,6 +1044,7 @@ rte_recalculate(struct channel *c, net *net, rte *new, struct rte_src *src) return; } *k = old->next; + table->rt_count--; break; } k = &old->next; @@ -1063,7 +1064,7 @@ rte_recalculate(struct channel *c, net *net, rte *new, struct rte_src *src) int old_ok = rte_is_ok(old); struct channel_limit *l = &c->rx_limit; - if (l->action && !old && new) + if (l->action && !old && new && !c->in_table) { u32 all_routes = stats->imp_routes + stats->filt_routes; @@ -1146,6 +1147,7 @@ rte_recalculate(struct channel *c, net *net, rte *new, struct rte_src *src) new->next = *k; *k = new; + table->rt_count++; } } else @@ -1163,6 +1165,7 @@ rte_recalculate(struct channel *c, net *net, rte *new, struct rte_src *src) new->next = net->routes; net->routes = new; + table->rt_count++; } else if (old == old_best) { @@ -1178,6 +1181,7 @@ rte_recalculate(struct channel *c, net *net, rte *new, struct rte_src *src) { new->next = net->routes; net->routes = new; + table->rt_count++; } /* Find a new optimal route (if there is any) */ @@ -1205,6 +1209,7 @@ rte_recalculate(struct channel *c, net *net, rte *new, struct rte_src *src) ASSERT(net->routes != NULL); new->next = net->routes->next; net->routes->next = new; + table->rt_count++; } /* The fourth (empty) case - suboptimal route was removed, nothing to do */ } @@ -2292,12 +2297,13 @@ rt_feed_channel_abort(struct channel *c) int rte_update_in(struct channel *c, const net_addr *n, rte *new, struct rte_src *src) { + struct rtable *tab = c->in_table; rte *old, **pos; net *net; if (new) { - net = net_get(c->in_table, n); + net = net_get(tab, n); if (!new->pref) new->pref = c->preference; @@ -2307,10 +2313,10 @@ rte_update_in(struct channel *c, const net_addr *n, rte *new, struct rte_src *sr } else { - net = net_find(c->in_table, n); + net = net_find(tab, n); if (!net) - return 0; + goto drop_withdraw; } /* Find the old rte */ @@ -2318,17 +2324,36 @@ rte_update_in(struct channel *c, const net_addr *n, rte *new, struct rte_src *sr if (old->attrs->src == src) { if (new && rte_same(old, new)) - return 0; + goto drop_update; /* Remove the old rte */ *pos = old->next; rte_free_quick(old); + tab->rt_count--; break; } if (!new) - return !!old; + { + if (!old) + goto drop_withdraw; + + return 1; + } + + struct channel_limit *l = &c->rx_limit; + if (l->action && !old) + { + if (tab->rt_count >= l->limit) + channel_notify_limit(c, l, PLD_RX, tab->rt_count); + + if (l->state == PLS_BLOCKED) + { + rte_trace_in(D_FILTERS, c->proto, new, "ignored [limit]"); + goto drop_update; + } + } /* Insert the new rte */ rte *e = rte_do_cow(new); @@ -2338,8 +2363,19 @@ rte_update_in(struct channel *c, const net_addr *n, rte *new, struct rte_src *sr e->lastmod = current_time(); e->next = *pos; *pos = e; - + tab->rt_count++; return 1; + +drop_update: + c->stats.imp_updates_received++; + c->stats.imp_updates_ignored++; + rte_free(new); + return 0; + +drop_withdraw: + c->stats.imp_withdraws_received++; + c->stats.imp_withdraws_ignored++; + return 0; } int @@ -2400,6 +2436,7 @@ rt_prune_sync(rtable *t, int all) { *ee = e->next; rte_free_quick(e); + t->rt_count--; } else ee = &e->next; |