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Send and receive communities.

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This commit is contained in:
Martin Mares 2000-04-17 10:19:15 +00:00
parent c6add07fa6
commit 1ed2fe9609
3 changed files with 20 additions and 8 deletions
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24
proto/bgp/attrs.c
View file

@ -54,7 +54,7 @@ bgp_check_path(struct bgp_proto *p, byte *a, int len)
{
DBG("Path segment %02x %02x\n", a[0], a[1]);
if (len < 2 ||
a[0] != BGP_PATH_AS_SET && a[0] != BGP_PATH_AS_SEQUENCE ||
a[0] != AS_PATH_SET && a[0] != AS_PATH_SEQUENCE ||
2*a[1] + 2 > len)
return 11;
len -= 2*a[1] + 2;
@ -101,9 +101,9 @@ static struct attr_desc bgp_attr_table[] = {
NULL, NULL },
{ "aggregator", 6, BAF_OPTIONAL, EAF_TYPE_OPAQUE, /* BA_AGGREGATOR */
NULL, NULL },
{ "community", -1, BAF_OPTIONAL | BAF_TRANSITIVE, EAF_TYPE_INT_SET, /* BA_COMMUNITY */
NULL, NULL },
#if 0
/* FIXME: Handle community lists and remember to convert their endianity and normalize them */
{ 0, 0 }, /* BA_COMMUNITY */
{ 0, 0 }, /* BA_ORIGINATOR_ID */
{ 0, 0 }, /* BA_CLUSTER_LIST */
#endif
@ -177,9 +177,16 @@ bgp_encode_attrs(byte *w, struct bgp_bucket *buck)
memcpy(w, &ip, len);
break;
}
case EAF_TYPE_INT_SET:
{
u32 *z = (u32 *)a->u.ptr->data;
int i;
for(i=0; i<len; i+=4)
put_u32(w+i, *z++);
break;
}
case EAF_TYPE_OPAQUE:
case EAF_TYPE_AS_PATH:
case EAF_TYPE_INT_SET:
memcpy(w, a->u.ptr->data, len);
break;
default:
@ -318,7 +325,7 @@ bgp_get_bucket(struct bgp_proto *p, ea_list *old, ea_list *tmp)
a = &new->attrs[i];
#ifdef LOCAL_DEBUG
{
byte buf[256];
byte buf[EA_FORMAT_BUF_SIZE];
ea_format(a, buf);
DBG("\t%s\n", buf);
}
@ -710,6 +717,13 @@ bgp_decode_attrs(struct bgp_conn *conn, byte *attr, unsigned int len, struct lin
case EAF_TYPE_IP_ADDRESS:
ipa_ntoh(*(ip_addr *)ad->data);
break;
case EAF_TYPE_INT_SET:
{
u32 *z = (u32 *) ad->data;
for(i=0; i<ad->length/4; i++)
z[i] = ntohl(z[i]);
break;
}
}
}

3
proto/bgp/bgp.h
View file

@ -139,9 +139,6 @@ int bgp_rx(struct birdsock *sk, int size);
#define BA_MP_UNREACH_NLRI 0x0f
#define BA_EXTENDED_COMM 0x10 /* draft-ramachandra-bgp-ext-communities */
#define BGP_PATH_AS_SET 1 /* Types of path segments */
#define BGP_PATH_AS_SEQUENCE 2
/* BGP states */
#define BS_IDLE 0

1
proto/bgp/packets.c
View file

@ -81,6 +81,7 @@ bgp_create_update(struct bgp_conn *conn, byte *buf)
int r_size = 0;
DBG("BGP: Sending update\n");
/* FIXME: Better timing of updates */
w = buf+2;
if ((buck = bgp->withdraw_bucket) && !EMPTY_LIST(buck->prefixes))
{