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Nest: Expand rte_src.private_id to u64

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In general, private_id is sparse and protocols may want to map some
internal values directly into it. For example, L3VPN needs to
map VPN route discriminators to private_id.

OTOH, u32 is enough for global_id, as these identifiers are dense.
This commit is contained in:
Ondrej Zajicek 2023-10-02 15:09:30 +02:00
parent 8ad9c4bb33
commit 21213be523
5 changed files with 5 additions and 5 deletions
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2
nest/route.h
View File

@ -439,7 +439,7 @@ struct nexthop {
struct rte_src {
struct rte_src *next; /* Hash chain */
struct proto *proto; /* Protocol the source is based on */
u32 private_id; /* Private ID, assigned by the protocol */
u64 private_id; /* Private ID, assigned by the protocol */
u32 global_id; /* Globally unique ID of the source */
unsigned uc; /* Use count */
};

2
nest/rt-attr.c
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@ -101,7 +101,7 @@ static struct idm src_ids;
#define RSH_KEY(n) n->proto, n->private_id
#define RSH_NEXT(n) n->next
#define RSH_EQ(p1,n1,p2,n2) p1 == p2 && n1 == n2
#define RSH_FN(p,n) p->hash_key ^ u32_hash(n)
#define RSH_FN(p,n) p->hash_key ^ u64_hash(n)
#define RSH_REHASH rte_src_rehash
#define RSH_PARAMS /2, *2, 1, 1, 8, 20

2
nest/rt-table.c
View File

@ -675,7 +675,7 @@ rte_mergable(rte *pri, rte *sec)
static void
rte_trace(struct channel *c, rte *e, int dir, char *msg)
{
log(L_TRACE "%s.%s %c %s %N %uL %uG %s",
log(L_TRACE "%s.%s %c %s %N %luL %uG %s",
c->proto->name, c->name ?: "?", dir, msg, e->net->n.addr, e->src->private_id, e->src->global_id,
rta_dest_name(e->attrs->dest));
}

2
proto/bgp/packets.c
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@ -2499,7 +2499,7 @@ bgp_bmp_encode_rte(struct bgp_channel *c, byte *buf, const net_addr *n,
/* Sham prefix */
struct bgp_prefix *px = alloca(prefix_size);
*px = (struct bgp_prefix) { };
px->path_id = src->private_id;
px->path_id = (u32) src->private_id;
net_copy(px->net, n);
add_tail(&b->prefixes, &px->buck_node);

2
proto/mrt/mrt.c
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@ -488,7 +488,7 @@ mrt_rib_table_entry(struct mrt_table_dump_state *s, rte *r)
/* Path Identifier */
if (s->add_path)
mrt_put_u32(b, r->src->private_id);
mrt_put_u32(b, (u32) r->src->private_id);
/* Route Attributes */
mrt_put_u16(b, 0);