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If no NLRI's are present in an UPDATE message, parse the attributes, but

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don't check presence of mandatory attributes. [draft-09]
This commit is contained in:
Martin Mares
2000-04-21 12:25:35 +00:00
parent f380aa60fa
commit 2a9e064d7b
3 changed files with 16 additions and 13 deletions
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17
proto/bgp/attrs.c
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@@ -676,7 +676,7 @@ bgp_path_loopy(struct bgp_proto *p, eattr *a)
}
struct rta *
bgp_decode_attrs(struct bgp_conn *conn, byte *attr, unsigned int len, struct linpool *pool)
bgp_decode_attrs(struct bgp_conn *conn, byte *attr, unsigned int len, struct linpool *pool, int mandatory)
{
struct bgp_proto *bgp = conn->bgp;
rta *a = lp_alloc(pool, sizeof(struct rta));
@@ -800,13 +800,16 @@ bgp_decode_attrs(struct bgp_conn *conn, byte *attr, unsigned int len, struct lin
}
/* Check if all mandatory attributes are present */
for(i=0; i < sizeof(bgp_mandatory_attrs)/sizeof(bgp_mandatory_attrs[0]); i++)
if (mandatory)
{
code = bgp_mandatory_attrs[i];
if (!(seen[code/8] & (1 << (code%8))))
for(i=0; i < sizeof(bgp_mandatory_attrs)/sizeof(bgp_mandatory_attrs[0]); i++)
{
bgp_error(conn, 3, 3, code, 1);
return NULL;
code = bgp_mandatory_attrs[i];
if (!(seen[code/8] & (1 << (code%8))))
{
bgp_error(conn, 3, 3, code, 1);
return NULL;
}
}
}
@@ -831,7 +834,7 @@ bgp_decode_attrs(struct bgp_conn *conn, byte *attr, unsigned int len, struct lin
neigh = neigh_find(&bgp->p, &nexthop, 0) ? : bgp->neigh;
a->gw = neigh->addr;
a->iface = neigh->iface;
return rta_lookup(a);
return a;
malformed:
bgp_error(conn, 3, 1, len, 0);