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Squashing the route attribute structure into one level.

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For now, all route attributes are stored as eattrs in ea_list. This
should make route manipulation easier and it also allows for a layered
approach of route attributes where updates from filters will be stored
as an overlay over the previous version.
This commit is contained in:
Maria Matejka
2022-05-30 12:03:03 +02:00
parent 950775f6fa
commit 938742decc
26 changed files with 352 additions and 497 deletions
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20
proto/ospf/ospf.c
View File

@@ -387,7 +387,7 @@ ospf_init(struct proto_config *CF)
static int
ospf_rte_better(struct rte *new, struct rte *old)
{
u32 new_metric1 = ea_get_int(new->attrs->eattrs, &ea_ospf_metric1, LSINFINITY);
u32 new_metric1 = ea_get_int(new->attrs, &ea_ospf_metric1, LSINFINITY);
if (new_metric1 == LSINFINITY)
return 0;
@@ -400,13 +400,13 @@ ospf_rte_better(struct rte *new, struct rte *old)
if (ns == RTS_OSPF_EXT2)
{
u32 old_metric2 = ea_get_int(old->attrs->eattrs, &ea_ospf_metric2, LSINFINITY);
u32 new_metric2 = ea_get_int(new->attrs->eattrs, &ea_ospf_metric2, LSINFINITY);
u32 old_metric2 = ea_get_int(old->attrs, &ea_ospf_metric2, LSINFINITY);
u32 new_metric2 = ea_get_int(new->attrs, &ea_ospf_metric2, LSINFINITY);
if (new_metric2 < old_metric2) return 1;
if (new_metric2 > old_metric2) return 0;
}
u32 old_metric1 = ea_get_int(old->attrs->eattrs, &ea_ospf_metric1, LSINFINITY);
u32 old_metric1 = ea_get_int(old->attrs, &ea_ospf_metric1, LSINFINITY);
if (new_metric1 < old_metric1)
return 1;
@@ -419,7 +419,7 @@ ospf_rte_igp_metric(struct rte *rt)
if (rt_get_source_attr(rt) == RTS_OSPF_EXT2)
return IGP_METRIC_UNKNOWN;
return ea_get_int(rt->attrs->eattrs, &ea_ospf_metric1, LSINFINITY);
return ea_get_int(rt->attrs, &ea_ospf_metric1, LSINFINITY);
}
void
@@ -535,7 +535,7 @@ ospf_shutdown(struct proto *P)
/* Cleanup locked rta entries */
FIB_WALK(&p->rtf, ort, nf)
{
rta_free(nf->old_rta);
ea_free(nf->old_ea);
}
FIB_WALK_END;
@@ -592,18 +592,18 @@ ospf_get_route_info(rte * rte, byte * buf)
}
buf += bsprintf(buf, " %s", type);
buf += bsprintf(buf, " (%d/%d", rt_get_preference(rte), ea_get_int(rte->attrs->eattrs, &ea_ospf_metric1, LSINFINITY));
buf += bsprintf(buf, " (%d/%d", rt_get_preference(rte), ea_get_int(rte->attrs, &ea_ospf_metric1, LSINFINITY));
if (source == RTS_OSPF_EXT2)
buf += bsprintf(buf, "/%d", ea_get_int(rte->attrs->eattrs, &ea_ospf_metric2, LSINFINITY));
buf += bsprintf(buf, "/%d", ea_get_int(rte->attrs, &ea_ospf_metric2, LSINFINITY));
buf += bsprintf(buf, ")");
if (source == RTS_OSPF_EXT1 || source == RTS_OSPF_EXT2)
{
eattr *ea = ea_find(rte->attrs->eattrs, &ea_ospf_tag);
eattr *ea = ea_find(rte->attrs, &ea_ospf_tag);
if (ea && (ea->u.data > 0))
buf += bsprintf(buf, " [%x]", ea->u.data);
}
eattr *ea = ea_find(rte->attrs->eattrs, &ea_ospf_router_id);
eattr *ea = ea_find(rte->attrs, &ea_ospf_router_id);
if (ea)
buf += bsprintf(buf, " [%R]", ea->u.data);
}

32
proto/ospf/rt.c
View File

@@ -1977,17 +1977,17 @@ add_cand(struct ospf_area *oa, struct top_hash_entry *en, struct top_hash_entry
}
static inline int
ort_changed(ort *nf, rta *nr)
ort_changed(ort *nf, ea_list *nr)
{
rta *or = nf->old_rta;
ea_list *or = nf->old_ea;
if (!or ||
(nf->n.metric1 != nf->old_metric1) || (nf->n.metric2 != nf->old_metric2) ||
(nf->n.tag != nf->old_tag) || (nf->n.rid != nf->old_rid))
return 1;
eattr *nhea_n = ea_find(nr->eattrs, &ea_gen_nexthop);
eattr *nhea_o = ea_find(or->eattrs, &ea_gen_nexthop);
eattr *nhea_n = ea_find(nr, &ea_gen_nexthop);
eattr *nhea_o = ea_find(or, &ea_gen_nexthop);
if (!nhea_n != !nhea_o)
return 1;
@@ -2000,8 +2000,8 @@ ort_changed(ort *nf, rta *nr)
return 1;
}
if ( ea_get_int(nr->eattrs, &ea_gen_source, 0)
!= ea_get_int(or->eattrs, &ea_gen_source, 0))
if ( ea_get_int(nr, &ea_gen_source, 0)
!= ea_get_int(or, &ea_gen_source, 0))
return 1;
return 0;
@@ -2047,9 +2047,6 @@ again1:
if (nf->n.type) /* Add the route */
{
rta a0 = {
};
struct {
ea_list l;
eattr a[7];
@@ -2066,7 +2063,7 @@ again1:
eattrs.a[eattrs.l.count++] =
EA_LITERAL_DIRECT_ADATA(&ea_gen_nexthop, 0, &nf->n.nhs->ad);
if (reload || ort_changed(nf, &a0))
if (reload || ort_changed(nf, &eattrs.l))
{
nf->old_metric1 = nf->n.metric1;
nf->old_metric2 = nf->n.metric2;
@@ -2088,24 +2085,25 @@ again1:
EA_LITERAL_EMBEDDED(&ea_ospf_router_id, 0, nf->n.rid);
ASSERT_DIE(ARRAY_SIZE(eattrs.a) >= eattrs.l.count);
a0.eattrs = &eattrs.l;
rta *a = rta_lookup(&a0);
ea_list *a = rta_lookup(&eattrs.l);
rte *e = rte_get_temp(a, p->p.main_source);
rta_free(nf->old_rta);
nf->old_rta = rta_clone(a);
rta_free(nf->old_ea);
nf->old_ea = rta_clone(a);
/*
DBG("Mod rte type %d - %N via %I on iface %s, met %d\n",
a0.source, nf->fn.addr, a0.gw, a0.iface ? a0.iface->name : "(none)", nf->n.metric1);
*/
rte_update(&p->p, nf->fn.addr, e);
}
}
else if (nf->old_rta)
else if (nf->old_ea)
{
/* Remove the route */
rta_free(nf->old_rta);
nf->old_rta = NULL;
rta_free(nf->old_ea);
nf->old_ea = NULL;
rte_update(&p->p, nf->fn.addr, NULL);
}

2
proto/ospf/rt.h
View File

@@ -78,7 +78,7 @@ typedef struct ort
*/
orta n;
u32 old_metric1, old_metric2, old_tag, old_rid;
rta *old_rta;
ea_list *old_ea;
u32 lsa_id;
u8 external_rte;
u8 area_net;

10
proto/ospf/topology.c
View File

@@ -1337,9 +1337,9 @@ ospf_rt_notify(struct proto *P, struct channel *ch UNUSED, net *n, rte *new, rte
ASSERT(p->asbr);
/* Get route attributes */
rta *a = new->attrs;
eattr *m1a = ea_find(a->eattrs, &ea_ospf_metric1);
eattr *m2a = ea_find(a->eattrs, &ea_ospf_metric2);
ea_list *a = new->attrs;
eattr *m1a = ea_find(a, &ea_ospf_metric1);
eattr *m2a = ea_find(a, &ea_ospf_metric2);
uint m1 = m1a ? m1a->u.data : 0;
uint m2 = m2a ? m2a->u.data : 10000;
@@ -1363,10 +1363,10 @@ ospf_rt_notify(struct proto *P, struct channel *ch UNUSED, net *n, rte *new, rte
uint ebit = m2a || !m1a;
uint metric = ebit ? m2 : m1;
uint tag = ea_get_int(a->eattrs, &ea_ospf_tag, 0);
uint tag = ea_get_int(a, &ea_ospf_tag, 0);
ip_addr fwd = IPA_NONE;
eattr *nhea = ea_find(a->eattrs, &ea_gen_nexthop);
eattr *nhea = ea_find(a, &ea_gen_nexthop);
if (nhea)
{
struct nexthop_adata *nhad = (struct nexthop_adata *) nhea->u.ptr;