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Diffstat (limited to 'proto/bgp/attrs.c')
-rw-r--r--proto/bgp/attrs.c98
1 files changed, 56 insertions, 42 deletions
diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c
index 0d2116b7..a56aeb19 100644
--- a/proto/bgp/attrs.c
+++ b/proto/bgp/attrs.c
@@ -106,7 +106,7 @@ bgp_set_attr(ea_list **attrs, struct linpool *pool, uint code, uint flags, uintp
({ REPORT(msg, ## args); s->err_withdraw = 1; return; })
#define UNSET(a) \
- ({ a->type = EAF_TYPE_UNDEF; return; })
+ ({ a->undef = 1; return; })
#define REJECT(msg, args...) \
({ log(L_ERR "%s: " msg, s->proto->p.name, ## args); s->err_reject = 1; return; })
@@ -374,6 +374,13 @@ bgp_init_aigp_metric(rte *e, u64 *metric, const struct adata **ad)
return *metric < IGP_METRIC_UNKNOWN;
}
+u32
+bgp_rte_igp_metric(struct rte *rt)
+{
+ u64 metric = bgp_total_aigp_metric(rt);
+ return (u32) MIN(metric, (u64) IGP_METRIC_UNKNOWN);
+}
+
/*
* Attribute hooks
@@ -1165,7 +1172,7 @@ bgp_export_attr(struct bgp_export_state *s, eattr *a, ea_list *to)
a->flags = (a->flags & BAF_PARTIAL) | desc->flags;
/* Set partial bit if new opt-trans attribute is attached to non-local route */
- if ((s->src != NULL) && (a->type & EAF_ORIGINATED) &&
+ if ((s->src != NULL) && (a->originated) &&
(a->flags & BAF_OPTIONAL) && (a->flags & BAF_TRANSITIVE))
a->flags |= BAF_PARTIAL;
@@ -1173,7 +1180,7 @@ bgp_export_attr(struct bgp_export_state *s, eattr *a, ea_list *to)
CALL(desc->export, s, a);
/* Attribute might become undefined in hook */
- if ((a->type & EAF_TYPE_MASK) == EAF_TYPE_UNDEF)
+ if (a->undef)
return;
}
else
@@ -1700,7 +1707,7 @@ bgp_free_prefix(struct bgp_channel *c, struct bgp_prefix *px)
HASH_REMOVE2(c->prefix_hash, PXH, c->pool, px);
if (c->prefix_slab)
- sl_free(c->prefix_slab, px);
+ sl_free(px);
else
mb_free(px);
}
@@ -1711,13 +1718,12 @@ bgp_free_prefix(struct bgp_channel *c, struct bgp_prefix *px)
*/
int
-bgp_preexport(struct channel *C, rte **new, struct linpool *pool UNUSED)
+bgp_preexport(struct channel *C, rte *e)
{
- rte *e = *new;
- struct proto *SRC = e->attrs->src->proto;
- struct bgp_channel *c = (struct bgp_channel *) C;
+ struct proto *SRC = e->src->proto;
struct bgp_proto *p = (struct bgp_proto *) C->proto;
struct bgp_proto *src = (SRC->proto == &proto_bgp) ? (struct bgp_proto *) SRC : NULL;
+ struct bgp_channel *c = (struct bgp_channel *) C;
/* Reject our routes */
if (src == p)
@@ -1784,7 +1790,7 @@ bgp_preexport(struct channel *C, rte **new, struct linpool *pool UNUSED)
static ea_list *
bgp_update_attrs(struct bgp_proto *p, struct bgp_channel *c, rte *e, ea_list *attrs0, struct linpool *pool)
{
- struct proto *SRC = e->attrs->src->proto;
+ struct proto *SRC = e->src->proto;
struct bgp_proto *src = (SRC->proto == &proto_bgp) ? (void *) SRC : NULL;
struct bgp_export_state s = { .proto = p, .channel = c, .pool = pool, .src = src, .route = e, .mpls = c->desc->mpls };
ea_list *attrs = attrs0;
@@ -1824,7 +1830,7 @@ bgp_update_attrs(struct bgp_proto *p, struct bgp_channel *c, rte *e, ea_list *at
/* MULTI_EXIT_DESC attribute - accept only if set in export filter */
a = bgp_find_attr(attrs0, BA_MULTI_EXIT_DISC);
- if (a && !(a->type & EAF_FRESH))
+ if (a && !(a->fresh))
bgp_unset_attr(&attrs, pool, BA_MULTI_EXIT_DISC);
}
@@ -1918,7 +1924,7 @@ bgp_rt_notify(struct proto *P, struct channel *C, net *n, rte *new, rte *old)
if (new)
{
- struct ea_list *attrs = bgp_update_attrs(p, c, new, new->attrs->eattrs, bgp_linpool2);
+ struct ea_list *attrs = bgp_update_attrs(p, c, new, new->attrs->eattrs, tmp_linpool);
/* Error during attribute processing */
if (!attrs)
@@ -1926,14 +1932,12 @@ bgp_rt_notify(struct proto *P, struct channel *C, net *n, rte *new, rte *old)
/* If attributes are invalid, we fail back to withdraw */
buck = attrs ? bgp_get_bucket(c, attrs) : bgp_get_withdraw_bucket(c);
- path = new->attrs->src->global_id;
-
- lp_flush(bgp_linpool2);
+ path = new->src->global_id;
}
else
{
buck = bgp_get_withdraw_bucket(c);
- path = old->attrs->src->global_id;
+ path = old->src->global_id;
}
px = bgp_get_prefix(c, n->n.addr, c->add_path_tx ? path : 0);
@@ -1953,34 +1957,44 @@ bgp_get_neighbor(rte *r)
return as;
/* If AS_PATH is not defined, we treat rte as locally originated */
- struct bgp_proto *p = (void *) r->attrs->src->proto;
+ struct bgp_proto *p = (void *) r->src->proto;
return p->cf->confederation ?: p->local_as;
}
static inline int
rte_stale(rte *r)
{
- if (r->u.bgp.stale < 0)
+ if (r->pflags & BGP_REF_STALE)
+ return 1;
+
+ if (r->pflags & BGP_REF_NOT_STALE)
+ return 0;
+
+ /* If staleness is unknown, compute and cache it */
+ eattr *a = ea_find(r->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_COMMUNITY));
+ if (a && int_set_contains(a->u.ptr, BGP_COMM_LLGR_STALE))
{
- /* If staleness is unknown, compute and cache it */
- eattr *a = ea_find(r->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_COMMUNITY));
- r->u.bgp.stale = a && int_set_contains(a->u.ptr, BGP_COMM_LLGR_STALE);
+ r->pflags |= BGP_REF_STALE;
+ return 1;
+ }
+ else
+ {
+ r->pflags |= BGP_REF_NOT_STALE;
+ return 0;
}
-
- return r->u.bgp.stale;
}
int
bgp_rte_better(rte *new, rte *old)
{
- struct bgp_proto *new_bgp = (struct bgp_proto *) new->attrs->src->proto;
- struct bgp_proto *old_bgp = (struct bgp_proto *) old->attrs->src->proto;
+ struct bgp_proto *new_bgp = (struct bgp_proto *) new->src->proto;
+ struct bgp_proto *old_bgp = (struct bgp_proto *) old->src->proto;
eattr *x, *y;
u32 n, o;
/* Skip suppressed routes (see bgp_rte_recalculate()) */
- n = new->u.bgp.suppressed;
- o = old->u.bgp.suppressed;
+ n = new->pflags & BGP_REF_SUPPRESSED;
+ o = old->pflags & BGP_REF_SUPPRESSED;
if (n > o)
return 0;
if (n < o)
@@ -2118,13 +2132,13 @@ bgp_rte_better(rte *new, rte *old)
int
bgp_rte_mergable(rte *pri, rte *sec)
{
- struct bgp_proto *pri_bgp = (struct bgp_proto *) pri->attrs->src->proto;
- struct bgp_proto *sec_bgp = (struct bgp_proto *) sec->attrs->src->proto;
+ struct bgp_proto *pri_bgp = (struct bgp_proto *) pri->src->proto;
+ struct bgp_proto *sec_bgp = (struct bgp_proto *) sec->src->proto;
eattr *x, *y;
u32 p, s;
/* Skip suppressed routes (see bgp_rte_recalculate()) */
- if (pri->u.bgp.suppressed != sec->u.bgp.suppressed)
+ if ((pri->pflags ^ sec->pflags) & BGP_REF_SUPPRESSED)
return 0;
/* RFC 4271 9.1.2.1. Route resolvability test */
@@ -2197,13 +2211,13 @@ bgp_rte_mergable(rte *pri, rte *sec)
static inline int
same_group(rte *r, u32 lpref, u32 lasn)
{
- return (r->pref == lpref) && (bgp_get_neighbor(r) == lasn);
+ return (r->attrs->pref == lpref) && (bgp_get_neighbor(r) == lasn);
}
static inline int
use_deterministic_med(rte *r)
{
- struct proto *P = r->attrs->src->proto;
+ struct proto *P = r->src->proto;
return (P->proto == &proto_bgp) && ((struct bgp_proto *) P)->cf->deterministic_med;
}
@@ -2212,9 +2226,9 @@ bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best)
{
rte *r, *s;
rte *key = new ? new : old;
- u32 lpref = key->pref;
+ u32 lpref = key->attrs->pref;
u32 lasn = bgp_get_neighbor(key);
- int old_suppressed = old ? old->u.bgp.suppressed : 0;
+ int old_suppressed = old ? !!(old->pflags & BGP_REF_SUPPRESSED) : 0;
/*
* Proper RFC 4271 path selection is a bit complicated, it cannot be
@@ -2266,11 +2280,11 @@ bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best)
*/
if (new)
- new->u.bgp.suppressed = 1;
+ new->pflags |= BGP_REF_SUPPRESSED;
if (old)
{
- old->u.bgp.suppressed = 1;
+ old->pflags |= BGP_REF_SUPPRESSED;
/* The fast case - replace not best with worse (or remove not best) */
if (old_suppressed && !(new && bgp_rte_better(new, old)))
@@ -2282,7 +2296,7 @@ bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best)
for (s=net->routes; rte_is_valid(s); s=s->next)
if (use_deterministic_med(s) && same_group(s, lpref, lasn))
{
- s->u.bgp.suppressed = 1;
+ s->pflags |= BGP_REF_SUPPRESSED;
if (!r || bgp_rte_better(s, r))
r = s;
}
@@ -2293,16 +2307,16 @@ bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best)
/* Found if new is mergable with best-in-group */
if (new && (new != r) && bgp_rte_mergable(r, new))
- new->u.bgp.suppressed = 0;
+ new->pflags &= ~BGP_REF_SUPPRESSED;
/* Found all existing routes mergable with best-in-group */
for (s=net->routes; rte_is_valid(s); s=s->next)
if (use_deterministic_med(s) && same_group(s, lpref, lasn))
if ((s != r) && bgp_rte_mergable(r, s))
- s->u.bgp.suppressed = 0;
+ s->pflags &= ~BGP_REF_SUPPRESSED;
/* Found best-in-group */
- r->u.bgp.suppressed = 0;
+ r->pflags &= ~BGP_REF_SUPPRESSED;
/*
* There are generally two reasons why we have to force
@@ -2350,7 +2364,7 @@ bgp_rte_modify_stale(struct rte *r, struct linpool *pool)
r = rte_cow_rta(r, pool);
bgp_set_attr_ptr(&(r->attrs->eattrs), pool, BA_COMMUNITY, flags,
int_set_add(pool, ad, BGP_COMM_LLGR_STALE));
- r->u.bgp.stale = 1;
+ r->pflags |= BGP_REF_STALE;
return r;
}
@@ -2435,9 +2449,9 @@ bgp_get_route_info(rte *e, byte *buf)
eattr *o = ea_find(e->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_ORIGIN));
u32 origas;
- buf += bsprintf(buf, " (%d", e->pref);
+ buf += bsprintf(buf, " (%d", e->attrs->pref);
- if (e->u.bgp.suppressed)
+ if (e->pflags & BGP_REF_SUPPRESSED)
buf += bsprintf(buf, "-");
if (rte_stale(e))
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 07:51:19 +0000