}
static int
-bgp_put_attr(byte *buf, uint size, uint code, uint flags, byte *data, uint len)
+bgp_put_attr(byte *buf, uint size, uint code, uint flags, const byte *data, uint len)
{
if (size < (4+len))
return -1;
static int
bgp_encode_as_path(struct bgp_write_state *s, eattr *a, byte *buf, uint size)
{
- byte *data = a->u.ptr->data;
+ const byte *data = a->u.ptr->data;
uint len = a->u.ptr->length;
if (!s->as4_session)
{
/* Prepare 16-bit AS_PATH (from 32-bit one) in a temporary buffer */
- byte *src = data;
- data = alloca(len);
- len = as_path_32to16(data, src, len);
+ byte *dst = alloca(len);
+ len = as_path_32to16(dst, data, len);
+ data = dst;
}
return bgp_put_attr(buf, size, BA_AS_PATH, a->flags, data, len);
static int
bgp_encode_aggregator(struct bgp_write_state *s, eattr *a, byte *buf, uint size)
{
- byte *data = a->u.ptr->data;
+ const byte *data = a->u.ptr->data;
uint len = a->u.ptr->length;
if (!s->as4_session)
{
/* Prepare 16-bit AGGREGATOR (from 32-bit one) in a temporary buffer */
- byte *src = data;
- data = alloca(6);
- len = aggregator_32to16(data, src);
+ byte *dst = alloca(6);
+ len = aggregator_32to16(dst, data);
}
return bgp_put_attr(buf, size, BA_AGGREGATOR, a->flags, data, len);
static void
bgp_format_aggregator(eattr *a, byte *buf, uint size UNUSED)
{
- byte *data = a->u.ptr->data;
+ const byte *data = a->u.ptr->data;
bsprintf(buf, "%I4 AS%u", get_ip4(data+4), get_u32(data+0));
}
static void
bgp_export_ext_community(struct bgp_export_state *s, eattr *a)
{
- a->u.ptr = ec_set_del_nontrans(s->pool, a->u.ptr);
+ struct adata *ad = ec_set_del_nontrans(s->pool, a->u.ptr);
- if (a->u.ptr->length == 0)
+ if (ad->length == 0)
UNSET(a);
- ec_set_sort_x(a->u.ptr);
+ ec_set_sort_x(ad);
+ a->u.ptr = ad;
}
static void
if (!(a->type & EAF_EMBEDDED))
{
- struct adata *oa = a->u.ptr;
+ const struct adata *oa = a->u.ptr;
struct adata *na = (struct adata *) dest;
memcpy(na, oa, sizeof(struct adata) + oa->length);
a->u.ptr = na;
if (p->cf->interpret_communities &&
(c = ea_find(e->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_COMMUNITY))))
{
- struct adata *d = c->u.ptr;
+ const struct adata *d = c->u.ptr;
/* Do not export anywhere */
if (int_set_contains(d, BGP_COMM_NO_ADVERTISE))
return 0;
}
-
-static adata null_adata; /* adata of length 0 */
-
static ea_list *
bgp_update_attrs(struct bgp_proto *p, struct bgp_channel *c, rte *e, ea_list *attrs0, struct linpool *pool)
{
struct bgp_export_state s = { .proto = p, .channel = c, .pool = pool, .src = src, .route = e, .mpls = c->desc->mpls };
ea_list *attrs = attrs0;
eattr *a;
- adata *ad;
+ const adata *ad;
/* ORIGIN attribute - mandatory, attach if missing */
if (! bgp_find_attr(attrs0, BA_ORIGIN))
bgp_rte_modify_stale(struct rte *r, struct linpool *pool)
{
eattr *a = ea_find(r->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_COMMUNITY));
- struct adata *ad = a ? a->u.ptr : NULL;
+ const struct adata *ad = a ? a->u.ptr : NULL;
uint flags = a ? a->flags : BAF_PARTIAL;
if (ad && int_set_contains(ad, BGP_COMM_NO_LLGR))
return;
/* Merge AS_PATH and AS4_PATH */
- as_path_cut(p2->u.ptr, p2_len - p4_len);
- p2->u.ptr = as_path_merge(pool, p2->u.ptr, p4->u.ptr);
+ struct adata *apc = as_path_cut(pool, p2->u.ptr, p2_len - p4_len);
+ p2->u.ptr = as_path_merge(pool, apc, p4->u.ptr);
}
}