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Route validity check converted to generic macro dispatch

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This commit is contained in:
Maria Matejka 2022-03-09 12:30:05 +01:00
parent 69d1ffde4c
commit 1b9189d5fd
3 changed files with 18 additions and 18 deletions
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5
nest/route.h
View File

@ -259,7 +259,10 @@ struct rte_storage {
#define REF_MODIFY 16 /* Route is scheduled for modify */
/* Route is valid for propagation (may depend on other flags in the future), accepts NULL */
static inline int rte_is_valid(rte *r) { return r && !(r->flags & REF_FILTERED); }
static inline int rte_is_valid_rte(rte *r) { return r && !(r->flags & REF_FILTERED); }
static inline int rte_is_valid_storage(struct rte_storage *r) { return r && rte_is_valid_rte(&r->rte); }
#define rte_is_valid(r) _Generic((*r), rte: rte_is_valid_rte, struct rte_storage: rte_is_valid_storage)(r)
/* Route just has REF_FILTERED flag */
static inline int rte_is_filtered(rte *r) { return !!(r->flags & REF_FILTERED); }

27
nest/rt-table.c
View File

@ -170,7 +170,7 @@ net_roa_check_ip4(rtable *tab, const net_addr_ip4 *px, u32 asn)
net_addr_roa4 *roa = (void *) fn->addr;
net *r = fib_node_to_user(&tab->fib, fn);
if (net_equal_prefix_roa4(roa, &n) && r->routes && rte_is_valid(&r->routes->rte))
if (net_equal_prefix_roa4(roa, &n) && rte_is_valid(r->routes))
{
anything = 1;
if (asn && (roa->asn == asn) && (roa->max_pxlen >= px->pxlen))
@ -202,7 +202,7 @@ net_roa_check_ip6(rtable *tab, const net_addr_ip6 *px, u32 asn)
net_addr_roa6 *roa = (void *) fn->addr;
net *r = fib_node_to_user(&tab->fib, fn);
if (net_equal_prefix_roa6(roa, &n) && r->routes && rte_is_valid(&r->routes->rte))
if (net_equal_prefix_roa6(roa, &n) && rte_is_valid(r->routes))
{
anything = 1;
if (asn && (roa->asn == asn) && (roa->max_pxlen >= px->pxlen))
@ -543,7 +543,7 @@ rt_notify_accepted(struct channel *c, net *net, rte *new_changed, rte *old_chang
old_best = old_changed;
else
{
for (struct rte_storage *r = net->routes; r && rte_is_valid(&r->rte); r = r->next)
for (struct rte_storage *r = net->routes; rte_is_valid(r); r = r->next)
{
if (bmap_test(&c->export_map, r->rte.id))
{
@ -561,7 +561,7 @@ rt_notify_accepted(struct channel *c, net *net, rte *new_changed, rte *old_chang
if ((new_changed == old_changed) || (old_best == old_changed))
{
/* Feed or old_best changed -> find first accepted by filters */
for (struct rte_storage *r = net->routes; r && rte_is_valid(&r->rte); r = r->next)
for (struct rte_storage *r = net->routes; rte_is_valid(r); r = r->next)
if (new_best = export_filter(c, ((nb0 = r->rte), &nb0), 0))
break;
}
@ -596,7 +596,7 @@ rt_export_merged(struct channel *c, net *net, linpool *pool, int silent)
struct rte_storage *best0 = net->routes;
rte *best;
if (!best0 || !rte_is_valid(&best0->rte))
if (!rte_is_valid(best0))
return NULL;
best = export_filter_(c, ((rme = best0->rte), &rme), pool, silent);
@ -714,16 +714,16 @@ static void
rte_announce(rtable *tab, uint type, net *net, struct rte_storage *new, struct rte_storage *old,
struct rte_storage *new_best, struct rte_storage *old_best)
{
if (!new || !rte_is_valid(&new->rte))
if (!rte_is_valid(new))
new = NULL;
if (!old || !rte_is_valid(&old->rte))
if (!rte_is_valid(old))
old = NULL;
if (!new_best || !rte_is_valid(&new_best->rte))
if (!rte_is_valid(new_best))
new_best = NULL;
if (!old_best || !rte_is_valid(&old_best->rte))
if (!rte_is_valid(old_best))
old_best = NULL;
if (!new && !old && !new_best && !old_best)
@ -1246,14 +1246,11 @@ rt_examine(rtable *t, net_addr *a, struct channel *c, const struct filter *filte
{
net *n = net_find(t, a);
if (!n || !n->routes)
if (!n || !rte_is_valid(n->routes))
return 0;
rte rt = n->routes->rte;
if (!rte_is_valid(&rt))
return 0;
rte_update_lock();
/* Rest is stripped down export_filter() */
@ -2151,7 +2148,7 @@ rt_feed_channel(struct channel *c)
if ((c->ra_mode == RA_OPTIMAL) ||
(c->ra_mode == RA_ACCEPTED) ||
(c->ra_mode == RA_MERGED))
if (e && rte_is_valid(&e->rte))
if (rte_is_valid(e))
{
/* In the meantime, the protocol may fell down */
if (c->export_state != ES_FEEDING)
@ -2168,7 +2165,7 @@ rt_feed_channel(struct channel *c)
if (c->export_state != ES_FEEDING)
goto done;
if (!rte_is_valid(&e->rte))
if (!rte_is_valid(e))
continue;
do_feed_channel(c, n, &e->rte);

4
proto/bgp/attrs.c
View File

@ -2212,7 +2212,7 @@ bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best)
/* The default case - find a new best-in-group route */
rte *r = new; /* new may not be in the list */
for (struct rte_storage *s = net->routes; rte_is_valid(&s->rte); s = s->next)
for (struct rte_storage *s = net->routes; rte_is_valid(s); s = s->next)
if (use_deterministic_med(s) && same_group(&s->rte, lpref, lasn))
{
s->rte.pflags |= BGP_REF_SUPPRESSED;
@ -2229,7 +2229,7 @@ bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best)
new->pflags &= ~BGP_REF_SUPPRESSED;
/* Found all existing routes mergable with best-in-group */
for (struct rte_storage *s = net->routes; rte_is_valid(&s->rte); s = s->next)
for (struct rte_storage *s = net->routes; rte_is_valid(s); s = s->next)
if (use_deterministic_med(s) && same_group(&s->rte, lpref, lasn))
if ((&s->rte != r) && bgp_rte_mergable(r, &s->rte))
s->rte.pflags &= ~BGP_REF_SUPPRESSED;