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bgpd, topotests: bmp, send peer down when unconfiguring imported vrf

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When unconfiguring an imported BGP instance, a peer down
should be sent to notify BMP collector that the BGP instance
is leaving.

Add a test that controls the presence of the peer down loc-rib
message.

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
This commit is contained in:
Philippe Guibert 2024-11-12 08:46:24 +01:00
parent 62891717e3
commit ca7699f4ae
2 changed files with 79 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
bgpd/bgp_bmp.c
View File

@ -705,6 +705,17 @@ static void bmp_send_bt_safe(struct bmp_targets *bt, struct stream *s)
stream_free(s);
}
static void bmp_send_peerdown_vrf_per_instance(struct bmp_targets *bt, struct bgp *bgp)
{
struct stream *s;
s = bmp_peerstate(bgp->peer_self, true);
if (!s)
return;
bmp_send_bt(bt, s);
stream_free(s);
}
/* send a stream to all bmp sessions configured in a bgp instance */
/* XXX: kludge - filling the pullwr's buffer */
static void bmp_send_all(struct bmp_bgp *bmpbgp, struct stream *s)
@ -2765,7 +2776,10 @@ DEFPY(bmp_import_vrf,
vty_out(vty, "%% BMP imported BGP instance not found\n");
return CMD_WARNING;
}
/* TODO: handle loc-rib peer down change */
bgp = bgp_lookup_by_name(bib->name);
if (!bgp)
return CMD_WARNING;
bmp_send_peerdown_vrf_per_instance(bt, bgp);
bmp_imported_bgp_put(bt, bib);
return CMD_SUCCESS;
}

84
tests/topotests/bgp_bmp/test_bgp_bmp_3.py
View File

@ -188,6 +188,31 @@ def _test_prefixes(policy, vrf=None, step=0):
assert success, "Checking the updated prefixes has failed ! %s" % res
def _test_peer_up(check_locrib=True):
"""
Checking for BMP peers up messages
"""
tgen = get_topogen()
if check_locrib:
peers = ["0.0.0.0", "192.168.1.3", "192:167::3"]
else:
peers = ["192.168.1.3", "192:167::3"]
logger.info("checking for BMP peers up messages")
test_func = partial(
bmp_check_for_peer_message,
peers,
"peer up",
tgen.gears["bmp1import"],
os.path.join(tgen.logdir, "bmp1import", "bmp.log"),
is_rd_instance=True,
)
success, _ = topotest.run_and_expect(test_func, True, count=30, wait=1)
assert success, "Checking the updated prefixes has been failed !."
def test_bmp_server_logging():
"""
Assert the logging of the bmp server.
@ -206,26 +231,8 @@ def test_bmp_server_logging():
assert success, "The BMP server is not logging"
def test_peer_up():
"""
Checking for BMP peers up messages
"""
tgen = get_topogen()
peers = ["0.0.0.0", "192.168.1.3", "192:167::3"]
logger.info("checking for BMP peers up messages")
test_func = partial(
bmp_check_for_peer_message,
peers,
"peer up",
tgen.gears["bmp1import"],
os.path.join(tgen.logdir, "bmp1import", "bmp.log"),
is_rd_instance=True,
)
success, _ = topotest.run_and_expect(test_func, True, count=30, wait=1)
assert success, "Checking the updated prefixes has been failed !."
def test_bmp_peer_up_start():
_test_peer_up()
def test_bmp_bgp_unicast():
@ -353,6 +360,43 @@ def test_bgp_instance_flapping():
assert success, "Checking the BMP peer up LOC-RIB message failed !."
def test_peer_up_after_flush():
"""
Checking for BMP peers down messages
"""
_test_peer_up(check_locrib=False)
def test_peer_down_locrib():
"""
Checking for BMP peers down loc-rib messages
"""
tgen = get_topogen()
tgen.gears["r1import"].vtysh_cmd(
"""
configure terminal
router bgp 65501
bmp targets bmp1
no bmp import-vrf-view vrf1
"""
)
peers = ["0.0.0.0"]
logger.info("checking for BMP peers down messages")
test_func = partial(
bmp_check_for_peer_message,
peers,
"peer down",
tgen.gears["bmp1import"],
os.path.join(tgen.logdir, "bmp1import", "bmp.log"),
)
success, _ = topotest.run_and_expect(test_func, True, count=30, wait=1)
assert success, "Checking the BMP peer down message has failed !."
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))