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bmp: add L3VPN support

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Support for BMP L3VPN monitoring messages through SAFI_MPLS_VPN address
family.

Signed-off-by: Francois Dumontet <francois.dumontet@6wind.com>
This commit is contained in:
Francois Dumontet 2022-05-16 13:44:06 +02:00
parent 9d8dc1b901
commit 5dde29654e
2 changed files with 27 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
bgpd/bgp_bmp.c
View File

@ -168,6 +168,16 @@ static int bmp_qhash_cmp(const struct bmp_queue_entry *a,
else if (b->afi == AFI_L2VPN && b->safi == SAFI_EVPN)
return -1;
if (a->afi == b->afi && a->safi == SAFI_MPLS_VPN &&
b->safi == SAFI_MPLS_VPN) {
ret = prefix_cmp(&a->rd, &b->rd);
if (ret)
return ret;
} else if (a->safi == SAFI_MPLS_VPN)
return 1;
else if (b->safi == SAFI_MPLS_VPN)
return -1;
ret = prefix_cmp(&a->p, &b->p);
if (ret)
return ret;
@ -186,7 +196,8 @@ static uint32_t bmp_qhash_hkey(const struct bmp_queue_entry *e)
offsetof(struct bmp_queue_entry, refcount)
- offsetof(struct bmp_queue_entry, peerid),
key);
if (e->afi == AFI_L2VPN && e->safi == SAFI_EVPN)
if ((e->afi == AFI_L2VPN && e->safi == SAFI_EVPN) ||
(e->safi == SAFI_MPLS_VPN))
key = jhash(&e->rd,
offsetof(struct bmp_queue_entry, rd)
- offsetof(struct bmp_queue_entry, refcount)
@ -985,7 +996,8 @@ afibreak:
struct bgp_path_info *bpi = NULL, *bpiter;
struct bgp_adj_in *adjin = NULL, *adjiter;
if (afi == AFI_L2VPN && safi == SAFI_EVPN) {
if ((afi == AFI_L2VPN && safi == SAFI_EVPN) ||
(safi == SAFI_MPLS_VPN)) {
/* initialize syncrdpos to the first
* mid-layer table entry
*/
@ -1014,7 +1026,8 @@ afibreak:
if (!bn) {
bn = bgp_table_get_next(table, &bmp->syncpos);
if (!bn) {
if (afi == AFI_L2VPN && safi == SAFI_EVPN) {
if ((afi == AFI_L2VPN && safi == SAFI_EVPN) ||
(safi == SAFI_MPLS_VPN)) {
/* reset bottom-layer pointer */
memset(&bmp->syncpos, 0,
sizeof(bmp->syncpos));
@ -1096,7 +1109,8 @@ afibreak:
const struct prefix *bn_p = bgp_dest_get_prefix(bn);
struct prefix_rd *prd = NULL;
if (afi == AFI_L2VPN && safi == SAFI_EVPN)
if (((afi == AFI_L2VPN) && (safi == SAFI_EVPN)) ||
(safi == SAFI_MPLS_VPN))
prd = (struct prefix_rd *)bgp_dest_get_prefix(bmp->syncrdpos);
if (bpi)
@ -1168,7 +1182,8 @@ static bool bmp_wrqueue(struct bmp *bmp, struct pullwr *pullwr)
bn = bgp_node_lookup(bmp->targets->bgp->rib[afi][safi], &bqe->p);
struct prefix_rd *prd = NULL;
if (bqe->afi == AFI_L2VPN && bqe->safi == SAFI_EVPN)
if ((bqe->afi == AFI_L2VPN && bqe->safi == SAFI_EVPN) ||
(bqe->safi == SAFI_MPLS_VPN))
prd = &bqe->rd;
if (bmp->targets->afimon[afi][safi] & BMP_MON_POSTPOLICY) {
@ -1256,7 +1271,8 @@ static void bmp_process_one(struct bmp_targets *bt, struct bgp *bgp, afi_t afi,
bqeref.afi = afi;
bqeref.safi = safi;
if (afi == AFI_L2VPN && safi == SAFI_EVPN && bn->pdest)
if ((afi == AFI_L2VPN && safi == SAFI_EVPN && bn->pdest) ||
(safi == SAFI_MPLS_VPN))
prefix_copy(&bqeref.rd,
(struct prefix_rd *)bgp_dest_get_prefix(bn->pdest));
@ -2195,12 +2211,12 @@ DEFPY(bmp_stats_cfg,
DEFPY(bmp_monitor_cfg,
bmp_monitor_cmd,
"[no] bmp monitor <ipv4|ipv6|l2vpn> <unicast|multicast|evpn> <pre-policy|post-policy>$policy",
"[no] bmp monitor <ipv4|ipv6|l2vpn> <unicast|multicast|evpn|vpn> <pre-policy|post-policy>$policy",
NO_STR
BMP_STR
"Send BMP route monitoring messages\n"
"Address Family\nAddress Family\nAddress Family\n"
"Address Family\nAddress Family\nAddress Family\n"
"Address Family\nAddress Family\nAddress Family\nAddress Family\n"
"Send state before policy and filter processing\n"
"Send state with policy and filters applied\n")
{

5
doc/user/bmp.rst
View File

@ -149,8 +149,9 @@ associated with a particular ``bmp targets``:
.. clicmd:: bmp monitor AFI SAFI <pre-policy|post-policy>
Perform Route Monitoring for the specified AFI and SAFI. Only IPv4 and
IPv6 are currently valid for AFI, and only unicast and multicast are valid
for SAFI. Other AFI/SAFI combinations may be added in the future.
IPv6 are currently valid for AFI. SAFI valid values are currently
unicast, multicast, evpn and vpn.
Other AFI/SAFI combinations may be added in the future.
All BGP neighbors are included in Route Monitoring. Options to select
a subset of BGP sessions may be added in the future.