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Merge pull request #12748 from opensourcerouting/fix/route_map_vpn_import

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tests: Check if route-map vpn import basic funtionality works fine
This commit is contained in:
Russ White 2023-02-07 11:40:03 -05:00 committed by GitHub
commit 0b1a6ca322
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7 changed files with 205 additions and 17 deletions
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17
bgpd/bgp_mplsvpn.c
View File

@ -1192,7 +1192,7 @@ leak_update(struct bgp *to_bgp, struct bgp_dest *bn,
if (!ecommunity_cmp(
bgp_attr_get_ecommunity(bpi->attr),
bgp_attr_get_ecommunity(new_attr))) {
vpn_leak_to_vrf_withdraw(to_bgp, bpi);
vpn_leak_to_vrf_withdraw(bpi);
bgp_aggregate_decrement(to_bgp, p, bpi, afi,
safi);
bgp_path_info_delete(bn, bpi);
@ -1722,7 +1722,7 @@ void vpn_leak_from_vrf_withdraw(struct bgp *to_bgp, /* to */
if (bpi) {
/* withdraw from looped vrfs as well */
vpn_leak_to_vrf_withdraw(to_bgp, bpi);
vpn_leak_to_vrf_withdraw(bpi);
bgp_aggregate_decrement(to_bgp, p, bpi, afi, safi);
bgp_path_info_delete(bn, bpi);
@ -1777,7 +1777,7 @@ void vpn_leak_from_vrf_withdraw_all(struct bgp *to_bgp, struct bgp *from_bgp,
zlog_debug("%s: deleting it",
__func__);
/* withdraw from leak-to vrfs as well */
vpn_leak_to_vrf_withdraw(to_bgp, bpi);
vpn_leak_to_vrf_withdraw(bpi);
bgp_aggregate_decrement(
to_bgp, bgp_dest_get_prefix(bn),
bpi, afi, safi);
@ -1873,7 +1873,10 @@ static bool vpn_leak_to_vrf_update_onevrf(struct bgp *to_bgp, /* to */
if (!vpn_leak_from_vpn_active(to_bgp, afi, &debugmsg)) {
if (debug)
zlog_debug("%s: skipping: %s", __func__, debugmsg);
zlog_debug(
"%s: from vpn (%s) to vrf (%s), skipping: %s",
__func__, from_bgp->name_pretty,
to_bgp->name_pretty, debugmsg);
return false;
}
@ -2115,8 +2118,7 @@ bool vpn_leak_to_vrf_update(struct bgp *from_bgp,
return leak_success;
}
void vpn_leak_to_vrf_withdraw(struct bgp *from_bgp, /* from */
struct bgp_path_info *path_vpn) /* route */
void vpn_leak_to_vrf_withdraw(struct bgp_path_info *path_vpn)
{
const struct prefix *p;
afi_t afi;
@ -2159,7 +2161,8 @@ void vpn_leak_to_vrf_withdraw(struct bgp *from_bgp, /* from */
for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp)) {
if (!vpn_leak_from_vpn_active(bgp, afi, &debugmsg)) {
if (debug)
zlog_debug("%s: skipping: %s", __func__,
zlog_debug("%s: from %s, skipping: %s",
__func__, bgp->name_pretty,
debugmsg);
continue;
}

3
bgpd/bgp_mplsvpn.h
View File

@ -75,8 +75,7 @@ extern bool vpn_leak_to_vrf_update(struct bgp *from_bgp,
struct bgp_path_info *path_vpn,
struct prefix_rd *prd);
extern void vpn_leak_to_vrf_withdraw(struct bgp *from_bgp,
struct bgp_path_info *path_vpn);
extern void vpn_leak_to_vrf_withdraw(struct bgp_path_info *path_vpn);
extern void vpn_leak_zebra_vrf_label_update(struct bgp *bgp, afi_t afi);
extern void vpn_leak_zebra_vrf_label_withdraw(struct bgp *bgp, afi_t afi);

14
bgpd/bgp_route.c
View File

@ -4456,8 +4456,7 @@ void bgp_update(struct peer *peer, const struct prefix *p, uint32_t addpath_id,
bgp_evpn_unimport_route(
bgp, afi, safi, p, pi);
else /* SAFI_MPLS_VPN */
vpn_leak_to_vrf_withdraw(bgp,
pi);
vpn_leak_to_vrf_withdraw(pi);
}
}
}
@ -4877,7 +4876,7 @@ filtered:
if ((SAFI_MPLS_VPN == safi)
&& (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) {
vpn_leak_to_vrf_withdraw(bgp, pi);
vpn_leak_to_vrf_withdraw(pi);
}
bgp_rib_remove(dest, pi, peer, afi, safi);
@ -4979,7 +4978,7 @@ void bgp_withdraw(struct peer *peer, const struct prefix *p,
if ((SAFI_MPLS_VPN == safi)
&& (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT)) {
vpn_leak_to_vrf_withdraw(bgp, pi);
vpn_leak_to_vrf_withdraw(pi);
}
} else if (bgp_debug_update(peer, p, NULL, 1)) {
bgp_debug_rdpfxpath2str(afi, safi, prd, p, label, num_labels,
@ -5419,7 +5418,7 @@ static wq_item_status bgp_clear_route_node(struct work_queue *wq, void *data)
}
if (SAFI_MPLS_VPN == safi &&
bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) {
vpn_leak_to_vrf_withdraw(bgp, pi);
vpn_leak_to_vrf_withdraw(pi);
}
bgp_rib_remove(dest, pi, peer, afi, safi);
@ -5688,8 +5687,7 @@ void bgp_clear_stale_route(struct peer *peer, afi_t afi, safi_t safi)
BGP_ROUTE_IMPORTED &&
peer->bgp->inst_type ==
BGP_INSTANCE_TYPE_DEFAULT)
vpn_leak_to_vrf_withdraw(
peer->bgp, pi);
vpn_leak_to_vrf_withdraw(pi);
bgp_rib_remove(rm, pi, peer, afi, safi);
break;
@ -6384,7 +6382,7 @@ static void bgp_static_withdraw_safi(struct bgp *bgp, const struct prefix *p,
#endif
if (SAFI_MPLS_VPN == safi
&& bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) {
vpn_leak_to_vrf_withdraw(bgp, pi);
vpn_leak_to_vrf_withdraw(pi);
}
bgp_aggregate_decrement(bgp, p, pi, afi, safi);
bgp_path_info_delete(dest, pi);

0
tests/topotests/bgp_route_map_vpn_import/__init__.py Normal file
View File

46
tests/topotests/bgp_route_map_vpn_import/r1/bgpd.conf Normal file
View File

@ -0,0 +1,46 @@
!
debug bgp updates
debug bgp vpn leak-from-vrf
debug bgp vpn leak-to-vrf
debug bgp nht
debug route-map
!
router bgp 65001
bgp router-id 10.10.10.10
no bgp ebgp-requires-policy
!
router bgp 65001 vrf Customer
bgp router-id 192.168.1.2
no bgp ebgp-requires-policy
address-family ipv4 unicast
redistribute connected
rd vpn export 192.168.1.2:2
rt vpn import 192.168.1.2:2
rt vpn export 192.168.1.2:2
export vpn
import vpn
exit-address-family
!
router bgp 65001 vrf Service
bgp router-id 192.168.2.2
no bgp ebgp-requires-policy
address-family ipv4 unicast
redistribute connected
rd vpn export 192.168.2.2:2
rt vpn import 192.168.2.2:2 192.168.1.2:2
rt vpn export 192.168.2.2:2
route-map vpn import from-customer
export vpn
import vpn
exit-address-family
!
bgp extcommunity-list standard from-customer seq 5 permit rt 192.168.1.2:2
!
ip prefix-list p1 seq 5 permit 192.0.2.0/24
!
route-map from-customer permit 10
match extcommunity from-customer
match ip address prefix-list p1
set local-preference 123
route-map from-customer permit 20
!

16
tests/topotests/bgp_route_map_vpn_import/r1/zebra.conf Normal file
View File

@ -0,0 +1,16 @@
!
interface lo
ip address 10.10.10.10/32
!
interface r1-eth0 vrf Customer
ip address 192.168.1.2/24
!
interface r1-eth1 vrf Service
ip address 192.168.2.2/24
!
interface r1-eth2
ip address 10.0.1.1/24
!
interface r1-eth3 vrf Customer
ip address 192.0.2.1/24
!

126
tests/topotests/bgp_route_map_vpn_import/test_bgp_route_map_vpn_import.py Normal file
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@ -0,0 +1,126 @@
#!/usr/bin/env python
#
# Copyright (c) 2022 by
# Donatas Abraitis <donatas@opensourcerouting.org>
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
"""
Test if `route-map vpn import NAME` works by setting/matching via route-maps.
Routes from VRF Customer to VRF Service MUST be leaked and modified later
with `route-map vpn import`.
"""
import os
import sys
import json
import pytest
import functools
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
# pylint: disable=C0413
from lib import topotest
from lib.topogen import Topogen, TopoRouter, get_topogen
from lib.common_config import step
pytestmark = [pytest.mark.bgpd]
def build_topo(tgen):
tgen.add_router("r1")
switch = tgen.add_switch("s1")
switch.add_link(tgen.gears["r1"])
switch = tgen.add_switch("s2")
switch.add_link(tgen.gears["r1"])
switch = tgen.add_switch("s3")
switch.add_link(tgen.gears["r1"])
switch = tgen.add_switch("s4")
switch.add_link(tgen.gears["r1"])
def setup_module(mod):
tgen = Topogen(build_topo, mod.__name__)
tgen.start_topology()
r1 = tgen.gears["r1"]
r1.run("ip link add Customer type vrf table 1001")
r1.run("ip link set up dev Customer")
r1.run("ip link set r1-eth0 master Customer")
r1.run("ip link add Service type vrf table 1002")
r1.run("ip link set up dev Service")
r1.run("ip link set r1-eth1 master Service")
r1.run("ip link set r1-eth3 master Customer")
router_list = tgen.routers()
for i, (rname, router) in enumerate(router_list.items(), 1):
router.load_config(
TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
)
router.load_config(
TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
)
tgen.start_router()
def teardown_module(mod):
tgen = get_topogen()
tgen.stop_topology()
def test_bgp_route_map_vpn_import():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
r1 = tgen.gears["r1"]
def _bgp_check_received_leaked_with_vpn_import():
output = json.loads(r1.vtysh_cmd("show bgp vrf Service ipv4 unicast json"))
expected = {
"routes": {
"192.0.2.0/24": [
{
"locPrf": 123,
},
],
"192.168.1.0/24": [
{
"locPrf": None,
}
],
}
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(_bgp_check_received_leaked_with_vpn_import)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
assert result is None, "Failed, imported routes are not modified"
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))