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bgpd, topotests: bmp, fix wrong peer type for vrf route messages

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When running the bgp_bmp_2 vrf test, peer route messages from the pre
and post policy are received with a wrong peer type value

> {"peer_type": "global instance", "policy": "pre-policy", "ipv6": false,
> "peer_ip": "192.168.0.2", "peer_distinguisher": "0:0", "peer_asn": 65502,
> "peer_bgp_id": "192.168.0.2", "timestamp": "2024-10-31 08:19:58.111963",
> "bmp_log_type": "update", "origin": "IGP", "as_path": "65501 65502",
> "bgp_nexthop": "192.168.0.2", "ip_prefix": "172.31.0.15/32", "seq": 15}

In addition to global instance peers, RFC7854 defines RD instance peers.
This value can be used for peers which are on a BGP VRF instance, for
example with an L3VPN setup.

When configuring a BGP VRF instance, the peer type should be seen as an
RD instance peer.

Fix this by modifying the BMP client:
- update the peer type for vrf mirror and monitoring messages
- modify bgp_bmp_2 vrf test to control the peer_type value

> {"peer_type": "route distinguisher instance", "policy": "pre-policy", "ipv6": false,
> "peer_ip": "192.168.0.2", "peer_distinguisher": "0:0", "peer_asn": 65502,
> "peer_bgp_id": "192.168.0.2", "timestamp": "2024-10-31 08:19:58.111963",
> "bmp_log_type": "update", "origin": "IGP", "as_path": "65501 65502",
> "bgp_nexthop": "192.168.0.2", "ip_prefix": "172.31.0.15/32", "seq": 15}

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
This commit is contained in:
Philippe Guibert 2024-10-31 09:18:56 +01:00
parent 3c68228a05
commit 96aea62fe2
5 changed files with 38 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
bgpd/bgp_bmp.c
View File

@ -794,14 +794,17 @@ static void bmp_wrmirror_lost(struct bmp *bmp, struct pullwr *pullwr)
{
struct stream *s;
struct timeval tv;
uint8_t peer_type_flag;
gettimeofday(&tv, NULL);
peer_type_flag = bmp_get_peer_type_vrf(bmp->targets->bgp->vrf_id);
s = stream_new(BGP_MAX_PACKET_SIZE);
bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_ROUTE_MIRRORING);
bmp_per_peer_hdr(s, bmp->targets->bgp, bmp->targets->bgp->peer_self, 0,
BMP_PEER_TYPE_GLOBAL_INSTANCE, 0, &tv);
bmp_per_peer_hdr(s, bmp->targets->bgp, bmp->targets->bgp->peer_self, 0, peer_type_flag, 0,
&tv);
stream_putw(s, BMP_MIRROR_TLV_TYPE_INFO);
stream_putw(s, 2);
@ -818,6 +821,7 @@ static bool bmp_wrmirror(struct bmp *bmp, struct pullwr *pullwr)
struct bmp_mirrorq *bmq;
struct peer *peer;
bool written = false;
uint8_t peer_type_flag;
if (bmp->mirror_lost) {
bmp_wrmirror_lost(bmp, pullwr);
@ -835,12 +839,13 @@ static bool bmp_wrmirror(struct bmp *bmp, struct pullwr *pullwr)
goto out;
}
peer_type_flag = bmp_get_peer_type_vrf(bmp->targets->bgp->vrf_id);
struct stream *s;
s = stream_new(BGP_MAX_PACKET_SIZE);
bmp_common_hdr(s, BMP_VERSION_3, BMP_TYPE_ROUTE_MIRRORING);
bmp_per_peer_hdr(s, bmp->targets->bgp, peer, 0,
BMP_PEER_TYPE_GLOBAL_INSTANCE, 0, &bmq->tv);
bmp_per_peer_hdr(s, bmp->targets->bgp, peer, 0, peer_type_flag, 0, &bmq->tv);
/* BMP Mirror TLV. */
stream_putw(s, BMP_MIRROR_TLV_TYPE_BGP_MESSAGE);
@ -1152,6 +1157,7 @@ static bool bmp_wrsync(struct bmp *bmp, struct pullwr *pullwr)
uint8_t bpi_num_labels, adjin_num_labels;
afi_t afi;
safi_t safi;
uint8_t peer_type_flag;
if (bmp->syncafi == AFI_MAX) {
FOREACH_AFI_SAFI (afi, safi) {
@ -1194,6 +1200,8 @@ afibreak:
struct bgp_path_info *bpi = NULL, *bpiter;
struct bgp_adj_in *adjin = NULL, *adjiter;
peer_type_flag = bmp_get_peer_type_vrf(bmp->targets->bgp->vrf_id);
if ((afi == AFI_L2VPN && safi == SAFI_EVPN) ||
(safi == SAFI_MPLS_VPN)) {
/* initialize syncrdpos to the first
@ -1248,10 +1256,8 @@ afibreak:
bmp->remote, afi2str(afi),
safi2str(safi));
bmp_eor(bmp, afi, safi, BMP_PEER_FLAG_L,
BMP_PEER_TYPE_GLOBAL_INSTANCE);
bmp_eor(bmp, afi, safi, 0,
BMP_PEER_TYPE_GLOBAL_INSTANCE);
bmp_eor(bmp, afi, safi, BMP_PEER_FLAG_L, peer_type_flag);
bmp_eor(bmp, afi, safi, 0, peer_type_flag);
bmp_eor(bmp, afi, safi, 0,
BMP_PEER_TYPE_LOC_RIB_INSTANCE);
@ -1335,19 +1341,20 @@ afibreak:
bpi_num_labels);
}
if (bpi)
peer_type_flag = bmp_get_peer_type(bpi->peer);
if (bpi && CHECK_FLAG(bpi->flags, BGP_PATH_VALID) &&
CHECK_FLAG(bmp->targets->afimon[afi][safi], BMP_MON_POSTPOLICY))
bmp_monitor(bmp, bpi->peer, BMP_PEER_FLAG_L,
BMP_PEER_TYPE_GLOBAL_INSTANCE, bn_p, prd, bpi->attr,
bmp_monitor(bmp, bpi->peer, BMP_PEER_FLAG_L, peer_type_flag, bn_p, prd, bpi->attr,
afi, safi, bpi->uptime,
bpi_num_labels ? bpi->extra->labels->label : NULL,
bpi_num_labels);
bpi_num_labels ? bpi->extra->labels->label : NULL, bpi_num_labels);
if (adjin) {
adjin_num_labels = adjin->labels ? adjin->labels->num_labels : 0;
bmp_monitor(bmp, adjin->peer, 0, BMP_PEER_TYPE_GLOBAL_INSTANCE, bn_p, prd,
adjin->attr, afi, safi, adjin->uptime,
adjin_num_labels ? &adjin->labels->label[0] : NULL, adjin_num_labels);
bmp_monitor(bmp, adjin->peer, 0, peer_type_flag, bn_p, prd, adjin->attr, afi, safi,
adjin->uptime, adjin_num_labels ? &adjin->labels->label[0] : NULL,
adjin_num_labels);
}
if (bn)
@ -1486,6 +1493,7 @@ static bool bmp_wrqueue(struct bmp *bmp, struct pullwr *pullwr)
struct bgp_dest *bn = NULL;
bool written = false;
uint8_t bpi_num_labels, adjin_num_labels;
uint8_t peer_type_flag;
bqe = bmp_pull(bmp);
if (!bqe)
@ -1526,6 +1534,8 @@ static bool bmp_wrqueue(struct bmp *bmp, struct pullwr *pullwr)
bn = bgp_safi_node_lookup(bmp->targets->bgp->rib[afi][safi], safi,
&bqe->p, prd);
peer_type_flag = bmp_get_peer_type(peer);
if (CHECK_FLAG(bmp->targets->afimon[afi][safi], BMP_MON_POSTPOLICY)) {
struct bgp_path_info *bpi;
@ -1539,12 +1549,9 @@ static bool bmp_wrqueue(struct bmp *bmp, struct pullwr *pullwr)
bpi_num_labels = BGP_PATH_INFO_NUM_LABELS(bpi);
bmp_monitor(bmp, peer, BMP_PEER_FLAG_L,
BMP_PEER_TYPE_GLOBAL_INSTANCE, &bqe->p, prd,
bpi ? bpi->attr : NULL, afi, safi,
bpi ? bpi->uptime : monotime(NULL),
bpi_num_labels ? bpi->extra->labels->label : NULL,
bpi_num_labels);
bmp_monitor(bmp, peer, BMP_PEER_FLAG_L, peer_type_flag, &bqe->p, prd,
bpi ? bpi->attr : NULL, afi, safi, bpi ? bpi->uptime : monotime(NULL),
bpi_num_labels ? bpi->extra->labels->label : NULL, bpi_num_labels);
written = true;
}
@ -1557,9 +1564,8 @@ static bool bmp_wrqueue(struct bmp *bmp, struct pullwr *pullwr)
break;
}
adjin_num_labels = adjin && adjin->labels ? adjin->labels->num_labels : 0;
bmp_monitor(bmp, peer, 0, BMP_PEER_TYPE_GLOBAL_INSTANCE, &bqe->p, prd,
adjin ? adjin->attr : NULL, afi, safi,
adjin ? adjin->uptime : monotime(NULL),
bmp_monitor(bmp, peer, 0, peer_type_flag, &bqe->p, prd, adjin ? adjin->attr : NULL,
afi, safi, adjin ? adjin->uptime : monotime(NULL),
adjin_num_labels ? &adjin->labels->label[0] : NULL, adjin_num_labels);
written = true;
}

4
tests/topotests/bgp_bmp/bmp1vrf/bmp-update-post-policy-step1.json
View File

@ -12,7 +12,7 @@
"peer_bgp_id": "192.168.0.2",
"peer_distinguisher": "0:0",
"peer_ip": "192.168.0.2",
"peer_type": "global instance",
"peer_type": "route distinguisher instance",
"policy": "post-policy"
},
"2111::1111/128": {
@ -27,7 +27,7 @@
"peer_bgp_id": "192.168.0.2",
"peer_distinguisher": "0:0",
"peer_ip": "192:168::2",
"peer_type": "global instance",
"peer_type": "route distinguisher instance",
"policy": "post-policy",
"safi": 1
}

4
tests/topotests/bgp_bmp/bmp1vrf/bmp-update-pre-policy-step1.json
View File

@ -12,7 +12,7 @@
"peer_bgp_id": "192.168.0.2",
"peer_distinguisher": "0:0",
"peer_ip": "192.168.0.2",
"peer_type": "global instance",
"peer_type": "route distinguisher instance",
"policy": "pre-policy"
},
"2111::1111/128": {
@ -27,7 +27,7 @@
"peer_bgp_id": "192.168.0.2",
"peer_distinguisher": "0:0",
"peer_ip": "192:168::2",
"peer_type": "global instance",
"peer_type": "route distinguisher instance",
"policy": "pre-policy",
"safi": 1
}

4
tests/topotests/bgp_bmp/bmp1vrf/bmp-withdraw-post-policy-step1.json
View File

@ -9,7 +9,7 @@
"peer_bgp_id": "192.168.0.2",
"peer_distinguisher": "0:0",
"peer_ip": "192.168.0.2",
"peer_type": "global instance",
"peer_type": "route distinguisher instance",
"policy": "post-policy"
},
"2111::1111/128": {
@ -21,7 +21,7 @@
"peer_bgp_id": "192.168.0.2",
"peer_distinguisher": "0:0",
"peer_ip": "192:168::2",
"peer_type": "global instance",
"peer_type": "route distinguisher instance",
"policy": "post-policy",
"safi": 1
}

4
tests/topotests/bgp_bmp/bmp1vrf/bmp-withdraw-pre-policy-step1.json
View File

@ -9,7 +9,7 @@
"peer_bgp_id": "192.168.0.2",
"peer_distinguisher": "0:0",
"peer_ip": "192.168.0.2",
"peer_type": "global instance",
"peer_type": "route distinguisher instance",
"policy": "pre-policy"
},
"2111::1111/128": {
@ -21,7 +21,7 @@
"peer_bgp_id": "192.168.0.2",
"peer_distinguisher": "0:0",
"peer_ip": "192:168::2",
"peer_type": "global instance",
"peer_type": "route distinguisher instance",
"policy": "pre-policy",
"safi": 1
}