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ROA change notifications: simple variant

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This implementation will just automatically request channel reload/refeed
when ROA change is detected. It may be sufficient for many uses;
performance impact for big IXPs is unclear.
This commit is contained in:
Maria Matejka
2019-03-06 00:11:40 +01:00
parent b9deced219
commit f827cf11be
12 changed files with 262 additions and 37 deletions
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26
nest/rt-table.c
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@@ -397,7 +397,7 @@ static rte *
export_filter_(struct channel *c, rte *rt0, rte **rt_free, linpool *pool, int silent)
{
struct proto *p = c->proto;
struct filter *filter = c->out_filter;
struct filter *filter = c->out_filter.filter;
struct proto_stats *stats = &c->stats;
rte *rt;
int v;
@@ -426,7 +426,7 @@ export_filter_(struct channel *c, rte *rt0, rte **rt_free, linpool *pool, int si
rte_make_tmp_attrs(&rt, pool);
v = filter && ((filter == FILTER_REJECT) ||
(f_run(filter, &rt, pool,
(f_run(&(c->out_filter), &rt, pool,
(silent ? FF_SILENT : 0)) > F_ACCEPT));
if (v)
{
@@ -941,6 +941,17 @@ rte_announce(rtable *tab, unsigned type, net *net, rte *new, rte *old,
else
rt_notify_basic(c, net, new, old, 0);
}
struct rt_notify rtn = {
.net = net,
.new = new,
.old = old,
.new_best = new_best,
.old_best = old_best,
.before_old = before_old,
};
notify(&(tab->listeners), &rtn);
}
static inline int
@@ -1364,7 +1375,7 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
{
struct proto *p = c->proto;
struct proto_stats *stats = &c->stats;
struct filter *filter = c->in_filter;
struct filter *filter = c->in_filter.filter;
rte *dummy = NULL;
net *nn;
@@ -1409,7 +1420,7 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
if (filter && (filter != FILTER_REJECT))
{
ea_list *oldea = new->attrs->eattrs;
int fr = f_run(filter, &new, rte_update_pool, 0);
int fr = f_run(&(c->in_filter), &new, rte_update_pool, 0);
if (fr > F_ACCEPT)
{
stats->imp_updates_filtered++;
@@ -1503,9 +1514,9 @@ rte_modify(rte *old)
rte_update_unlock();
}
/* Check rtable for best route to given net whether it would be exported do p */
/* One time check rtable for best route to given net whether it would be exported do p */
int
rt_examine(rtable *t, net_addr *a, struct proto *p, struct filter *filter)
rt_examine(rtable *t, net_addr *a, struct proto *p, struct filter_slot *filter_slot)
{
net *n = net_find(t, a);
rte *rt = n ? n->routes : NULL;
@@ -1520,7 +1531,7 @@ rt_examine(rtable *t, net_addr *a, struct proto *p, struct filter *filter)
if (v == RIC_PROCESS)
{
rte_make_tmp_attrs(&rt, rte_update_pool);
v = (f_run(filter, &rt, rte_update_pool, FF_SILENT) <= F_ACCEPT);
v = (f_run(filter_slot, &rt, rte_update_pool, FF_SILENT | FF_TEMP) <= F_ACCEPT);
}
/* Discard temporary rte */
@@ -1727,6 +1738,7 @@ rt_setup(pool *p, rtable *t, struct rtable_config *cf)
t->addr_type = cf->addr_type;
fib_init(&t->fib, p, t->addr_type, sizeof(net), OFFSETOF(net, n), 0, NULL);
init_list(&t->channels);
init_list(&t->listeners);
t->rt_event = ev_new_init(p, rt_event, t);
t->gc_time = current_time();