diff options
| -rw-r--r-- | bgpd/bgp_attr.c | 27 | ||||
| -rw-r--r-- | bgpd/bgp_attr.h | 16 | ||||
| -rw-r--r-- | bgpd/bgp_bmp.c | 5 | ||||
| -rw-r--r-- | bgpd/bgp_route.c | 15 | ||||
| -rw-r--r-- | bgpd/bgp_updgrp_packet.c | 15 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/r1/bgpd.conf | 27 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/r1/ospfd.conf | 23 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/r1/zebra.conf | 13 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/r2/bgpd.conf | 18 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/r2/ospfd.conf | 18 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/r2/zebra.conf | 11 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/r3/bgpd.conf | 11 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/r3/ospfd.conf | 18 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/r3/zebra.conf | 10 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/r4/bgpd.conf | 11 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/r4/ospfd.conf | 13 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/r4/zebra.conf | 7 | ||||
| -rw-r--r-- | tests/topotests/bgp_aigp_rr/test_bgp_aigp_rr.py | 128 |
18 files changed, 351 insertions, 35 deletions
diff --git a/bgpd/bgp_attr.c b/bgpd/bgp_attr.c index 596d820f1b..34b77b5eec 100644 --- a/bgpd/bgp_attr.c +++ b/bgpd/bgp_attr.c @@ -480,12 +480,11 @@ static bool bgp_attr_aigp_get_tlv_metric(uint8_t *pnt, int length, return false; } -static void stream_put_bgp_aigp_tlv_metric(struct stream *s, - struct bgp_path_info *bpi) +static void stream_put_bgp_aigp_tlv_metric(struct stream *s, uint64_t aigp) { stream_putc(s, BGP_AIGP_TLV_METRIC); stream_putw(s, BGP_AIGP_TLV_METRIC_LEN); - stream_putq(s, bgp_aigp_metric_total(bpi)); + stream_putq(s, aigp); } static bool bgp_attr_aigp_valid(uint8_t *pnt, int length) @@ -4546,14 +4545,11 @@ static void bgp_packet_ecommunity_attribute(struct stream *s, struct peer *peer, } /* Make attribute packet. */ -bgp_size_t bgp_packet_attribute(struct bgp *bgp, struct peer *peer, - struct stream *s, struct attr *attr, - struct bpacket_attr_vec_arr *vecarr, - struct prefix *p, afi_t afi, safi_t safi, - struct peer *from, struct prefix_rd *prd, - mpls_label_t *label, uint8_t num_labels, - bool addpath_capable, uint32_t addpath_tx_id, - struct bgp_path_info *bpi) +bgp_size_t bgp_packet_attribute(struct bgp *bgp, struct peer *peer, struct stream *s, + struct attr *attr, struct bpacket_attr_vec_arr *vecarr, + struct prefix *p, afi_t afi, safi_t safi, struct peer *from, + struct prefix_rd *prd, mpls_label_t *label, uint8_t num_labels, + bool addpath_capable, uint32_t addpath_tx_id) { size_t cp; size_t aspath_sizep; @@ -5032,10 +5028,7 @@ bgp_size_t bgp_packet_attribute(struct bgp *bgp, struct peer *peer, } /* AIGP */ - if (bpi && CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_AIGP)) && - (CHECK_FLAG(peer->flags, PEER_FLAG_AIGP) || - peer->sub_sort == BGP_PEER_EBGP_OAD || - peer->sort != BGP_PEER_EBGP)) { + if (CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_AIGP)) && AIGP_TRANSMIT_ALLOWED(peer)) { /* At the moment only AIGP Metric TLV exists for AIGP * attribute. If more comes in, do not forget to update * attr_len variable to include new ones. @@ -5045,7 +5038,7 @@ bgp_size_t bgp_packet_attribute(struct bgp *bgp, struct peer *peer, stream_putc(s, BGP_ATTR_FLAG_OPTIONAL); stream_putc(s, BGP_ATTR_AIGP); stream_putc(s, attr_len); - stream_put_bgp_aigp_tlv_metric(s, bpi); + stream_put_bgp_aigp_tlv_metric(s, attr->aigp_metric); } /* Unknown transit attribute. */ @@ -5314,7 +5307,7 @@ void bgp_dump_routes_attr(struct stream *s, struct bgp_path_info *bpi, stream_putc(s, BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS); stream_putc(s, BGP_ATTR_AIGP); stream_putc(s, attr_len); - stream_put_bgp_aigp_tlv_metric(s, bpi); + stream_put_bgp_aigp_tlv_metric(s, attr->aigp_metric); } /* Return total size of attribute. */ diff --git a/bgpd/bgp_attr.h b/bgpd/bgp_attr.h index 0a43399be6..9cdac10f92 100644 --- a/bgpd/bgp_attr.h +++ b/bgpd/bgp_attr.h @@ -387,12 +387,12 @@ extern struct attr *bgp_attr_aggregate_intern( struct community *community, struct ecommunity *ecommunity, struct lcommunity *lcommunity, struct bgp_aggregate *aggregate, uint8_t atomic_aggregate, const struct prefix *p); -extern bgp_size_t bgp_packet_attribute( - struct bgp *bgp, struct peer *peer, struct stream *s, struct attr *attr, - struct bpacket_attr_vec_arr *vecarr, struct prefix *p, afi_t afi, - safi_t safi, struct peer *from, struct prefix_rd *prd, - mpls_label_t *label, uint8_t num_labels, bool addpath_capable, - uint32_t addpath_tx_id, struct bgp_path_info *bpi); +extern bgp_size_t bgp_packet_attribute(struct bgp *bgp, struct peer *peer, struct stream *s, + struct attr *attr, struct bpacket_attr_vec_arr *vecarr, + struct prefix *p, afi_t afi, safi_t safi, struct peer *from, + struct prefix_rd *prd, mpls_label_t *label, + uint8_t num_labels, bool addpath_capable, + uint32_t addpath_tx_id); extern void bgp_dump_routes_attr(struct stream *s, struct bgp_path_info *bpi, const struct prefix *p); extern bool attrhash_cmp(const void *arg1, const void *arg2); @@ -585,6 +585,10 @@ static inline void bgp_attr_set_transit(struct attr *attr, attr->transit = transit; } +#define AIGP_TRANSMIT_ALLOWED(peer) \ + (CHECK_FLAG((peer)->flags, PEER_FLAG_AIGP) || ((peer)->sub_sort == BGP_PEER_EBGP_OAD) || \ + ((peer)->sort != BGP_PEER_EBGP)) + static inline uint64_t bgp_attr_get_aigp_metric(const struct attr *attr) { return attr->aigp_metric; diff --git a/bgpd/bgp_bmp.c b/bgpd/bgp_bmp.c index 59efb35235..48c5ee7ede 100644 --- a/bgpd/bgp_bmp.c +++ b/bgpd/bgp_bmp.c @@ -1016,9 +1016,8 @@ static struct stream *bmp_update(const struct prefix *p, struct prefix_rd *prd, stream_putw(s, 0); /* 5: Encode all the attributes, except MP_REACH_NLRI attr. */ - total_attr_len = - bgp_packet_attribute(NULL, peer, s, attr, &vecarr, NULL, afi, - safi, peer, NULL, NULL, 0, 0, 0, NULL); + total_attr_len = bgp_packet_attribute(NULL, peer, s, attr, &vecarr, NULL, afi, safi, peer, + NULL, NULL, 0, 0, 0); /* space check? */ diff --git a/bgpd/bgp_route.c b/bgpd/bgp_route.c index 551547b7c0..cdd5fc0805 100644 --- a/bgpd/bgp_route.c +++ b/bgpd/bgp_route.c @@ -2821,6 +2821,21 @@ bool subgroup_announce_check(struct bgp_dest *dest, struct bgp_path_info *pi, false)); } + /* + * Adjust AIGP for propagation when the nexthop is set to ourselves, + * e.g., using "set ip nexthop peer-address" or when advertising to + * EBGP. Note in route reflection the nexthop is usually unmodified + * and the AIGP should not be adjusted in that case. + */ + if (CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_AIGP)) && AIGP_TRANSMIT_ALLOWED(peer)) { + if (nh_reset || + CHECK_FLAG(attr->rmap_change_flags, BATTR_RMAP_NEXTHOP_PEER_ADDRESS)) { + uint64_t aigp = bgp_aigp_metric_total(pi); + + bgp_attr_set_aigp_metric(attr, aigp); + } + } + return true; } diff --git a/bgpd/bgp_updgrp_packet.c b/bgpd/bgp_updgrp_packet.c index bed00a6640..3ce136ef87 100644 --- a/bgpd/bgp_updgrp_packet.c +++ b/bgpd/bgp_updgrp_packet.c @@ -738,9 +738,9 @@ struct bpacket *subgroup_update_packet(struct update_subgroup *subgrp) /* 5: Encode all the attributes, except MP_REACH_NLRI * attr. */ - total_attr_len = bgp_packet_attribute( - NULL, peer, s, adv->baa->attr, &vecarr, NULL, - afi, safi, from, NULL, NULL, 0, 0, 0, path); + total_attr_len = bgp_packet_attribute(NULL, peer, s, adv->baa->attr, + &vecarr, NULL, afi, safi, from, NULL, + NULL, 0, 0, 0); space_remaining = STREAM_CONCAT_REMAIN(s, snlri, STREAM_SIZE(s)) @@ -1149,12 +1149,9 @@ void subgroup_default_update_packet(struct update_subgroup *subgrp, /* Make place for total attribute length. */ pos = stream_get_endp(s); stream_putw(s, 0); - total_attr_len = - bgp_packet_attribute(NULL, peer, s, attr, &vecarr, &p, afi, - safi, from, NULL, &label, num_labels, - addpath_capable, - BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE, - NULL); + total_attr_len = bgp_packet_attribute(NULL, peer, s, attr, &vecarr, &p, afi, safi, from, + NULL, &label, num_labels, addpath_capable, + BGP_ADDPATH_TX_ID_FOR_DEFAULT_ORIGINATE); /* Set Total Path Attribute Length. */ stream_putw_at(s, pos, total_attr_len); diff --git a/tests/topotests/bgp_aigp_rr/r1/bgpd.conf b/tests/topotests/bgp_aigp_rr/r1/bgpd.conf new file mode 100644 index 0000000000..90d34bdf83 --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/r1/bgpd.conf @@ -0,0 +1,27 @@ +router bgp 65001 + no bgp ebgp-requires-policy + no bgp network import-check + bgp route-reflector allow-outbound-policy + neighbor 10.0.0.2 remote-as internal + neighbor 10.0.0.2 update-source lo + neighbor 10.0.0.2 timers 1 3 + neighbor 10.0.0.2 timers connect 1 + neighbor 10.0.0.2 route-reflector-client + neighbor 10.0.0.3 remote-as internal + neighbor 10.0.0.3 update-source lo + neighbor 10.0.0.3 timers 1 3 + neighbor 10.0.0.3 timers connect 1 + neighbor 10.0.0.3 route-reflector-client + neighbor 10.0.0.4 remote-as internal + neighbor 10.0.0.4 update-source lo + neighbor 10.0.0.4 timers 1 3 + neighbor 10.0.0.4 timers connect 1 + neighbor 10.0.0.4 route-reflector-client + address-family ipv4 + neighbor 10.0.0.4 route-map set-nexthop out + exit-address-family +! +route-map set-nexthop permit 10 + set ip next-hop peer-address +exit +! diff --git a/tests/topotests/bgp_aigp_rr/r1/ospfd.conf b/tests/topotests/bgp_aigp_rr/r1/ospfd.conf new file mode 100644 index 0000000000..b5b43c76be --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/r1/ospfd.conf @@ -0,0 +1,23 @@ +! +interface lo + ip ospf passive +! +interface r1-eth0 + ip ospf dead-interval 4 + ip ospf hello-interval 1 + ip ospf cost 10 +! +interface r1-eth1 + ip ospf dead-interval 4 + ip ospf hello-interval 1 + ip ospf cost 10 +! +interface r1-eth2 + ip ospf dead-interval 4 + ip ospf hello-interval 1 + ip ospf cost 10 +! +router ospf + router-id 10.0.0.1 + network 0.0.0.0/0 area 0 +! diff --git a/tests/topotests/bgp_aigp_rr/r1/zebra.conf b/tests/topotests/bgp_aigp_rr/r1/zebra.conf new file mode 100644 index 0000000000..bf4a3497e8 --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/r1/zebra.conf @@ -0,0 +1,13 @@ +! +interface lo + ip address 10.0.0.1/32 +! +interface r1-eth0 + ip address 192.168.12.1/24 +! +interface r1-eth1 + ip address 192.168.13.1/24 +! +interface r1-eth2 + ip address 192.168.14.1/24 +! diff --git a/tests/topotests/bgp_aigp_rr/r2/bgpd.conf b/tests/topotests/bgp_aigp_rr/r2/bgpd.conf new file mode 100644 index 0000000000..97059fdd33 --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/r2/bgpd.conf @@ -0,0 +1,18 @@ +router bgp 65001 + no bgp ebgp-requires-policy + no bgp network import-check + neighbor 10.0.0.1 remote-as internal + neighbor 10.0.0.1 update-source lo + neighbor 10.0.0.1 timers 1 3 + neighbor 10.0.0.1 timers connect 1 + address-family ipv4 + redistribute connected route-map connected-to-bgp + neighbor 10.0.0.1 next-hop-self + exit-address-family +! +ip prefix-list p22 seq 5 permit 10.0.2.2/32 +! +route-map connected-to-bgp permit 10 + match ip address prefix-list p22 + set aigp 2 +! diff --git a/tests/topotests/bgp_aigp_rr/r2/ospfd.conf b/tests/topotests/bgp_aigp_rr/r2/ospfd.conf new file mode 100644 index 0000000000..dd91101d90 --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/r2/ospfd.conf @@ -0,0 +1,18 @@ +! +interface lo + ip ospf passive +! +interface r2-eth0 + ip ospf dead-interval 4 + ip ospf hello-interval 1 + ip ospf cost 10 +! +interface r2-eth1 + ip ospf dead-interval 4 + ip ospf hello-interval 1 + ip ospf cost 10 +! +router ospf + router-id 10.0.0.2 + network 0.0.0.0/0 area 0 +! diff --git a/tests/topotests/bgp_aigp_rr/r2/zebra.conf b/tests/topotests/bgp_aigp_rr/r2/zebra.conf new file mode 100644 index 0000000000..6e2130f7e8 --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/r2/zebra.conf @@ -0,0 +1,11 @@ +! +interface lo + ip address 10.0.0.2/32 + ip address 10.0.2.2/32 +! +interface r2-eth0 + ip address 192.168.12.2/24 +! +interface r2-eth1 + ip address 192.168.23.2/24 +! diff --git a/tests/topotests/bgp_aigp_rr/r3/bgpd.conf b/tests/topotests/bgp_aigp_rr/r3/bgpd.conf new file mode 100644 index 0000000000..b8a36c5ad0 --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/r3/bgpd.conf @@ -0,0 +1,11 @@ +router bgp 65001 + no bgp ebgp-requires-policy + no bgp network import-check + neighbor 10.0.0.1 remote-as internal + neighbor 10.0.0.1 update-source lo + neighbor 10.0.0.1 timers 1 3 + neighbor 10.0.0.1 timers connect 1 + address-family ipv4 + neighbor 10.0.0.1 next-hop-self + exit-address-family +! diff --git a/tests/topotests/bgp_aigp_rr/r3/ospfd.conf b/tests/topotests/bgp_aigp_rr/r3/ospfd.conf new file mode 100644 index 0000000000..48702e4e4c --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/r3/ospfd.conf @@ -0,0 +1,18 @@ +! +interface lo + ip ospf passive +! +interface r3-eth0 + ip ospf dead-interval 4 + ip ospf hello-interval 1 + ip ospf cost 10 +! +interface r3-eth1 + ip ospf dead-interval 4 + ip ospf hello-interval 1 + ip ospf cost 10 +! +router ospf + router-id 10.0.0.3 + network 0.0.0.0/0 area 0 +! diff --git a/tests/topotests/bgp_aigp_rr/r3/zebra.conf b/tests/topotests/bgp_aigp_rr/r3/zebra.conf new file mode 100644 index 0000000000..ea6663724e --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/r3/zebra.conf @@ -0,0 +1,10 @@ +! +interface lo + ip address 10.0.0.3/32 +! +interface r3-eth0 + ip address 192.168.13.3/24 +! +interface r3-eth1 + ip address 192.168.23.3/24 +! diff --git a/tests/topotests/bgp_aigp_rr/r4/bgpd.conf b/tests/topotests/bgp_aigp_rr/r4/bgpd.conf new file mode 100644 index 0000000000..b8a36c5ad0 --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/r4/bgpd.conf @@ -0,0 +1,11 @@ +router bgp 65001 + no bgp ebgp-requires-policy + no bgp network import-check + neighbor 10.0.0.1 remote-as internal + neighbor 10.0.0.1 update-source lo + neighbor 10.0.0.1 timers 1 3 + neighbor 10.0.0.1 timers connect 1 + address-family ipv4 + neighbor 10.0.0.1 next-hop-self + exit-address-family +! diff --git a/tests/topotests/bgp_aigp_rr/r4/ospfd.conf b/tests/topotests/bgp_aigp_rr/r4/ospfd.conf new file mode 100644 index 0000000000..1d95b2ac2b --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/r4/ospfd.conf @@ -0,0 +1,13 @@ +! +interface lo + ip ospf passive +! +interface r4-eth0 + ip ospf dead-interval 4 + ip ospf hello-interval 1 + ip ospf cost 10 +! +router ospf + router-id 10.0.0.4 + network 0.0.0.0/0 area 0 +! diff --git a/tests/topotests/bgp_aigp_rr/r4/zebra.conf b/tests/topotests/bgp_aigp_rr/r4/zebra.conf new file mode 100644 index 0000000000..d7a7dece2b --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/r4/zebra.conf @@ -0,0 +1,7 @@ +! +interface lo + ip address 10.0.0.4/32 +! +interface r4-eth0 + ip address 192.168.14.4/24 +! diff --git a/tests/topotests/bgp_aigp_rr/test_bgp_aigp_rr.py b/tests/topotests/bgp_aigp_rr/test_bgp_aigp_rr.py new file mode 100644 index 0000000000..0079535da7 --- /dev/null +++ b/tests/topotests/bgp_aigp_rr/test_bgp_aigp_rr.py @@ -0,0 +1,128 @@ +#!/usr/bin/env python +# SPDX-License-Identifier: ISC + +# +# Copyright (c) 2024, Palo Alto Networks, Inc. +# Enke Chen <enchen@paloaltonetworks.com> +# + +""" +r1, r2, and r3 are directly connectd to each other. +r4 is only connected to r1 directly. + +r1 is the route reflector. +r1 sets the nexthop to itself when advertising routes to r4. + +r2 sources 10.0.2.2/32 with agigp-metric 2. + +Results: + +r1, r2 and r3 should have aigp-meric 2. +r4 should have aigp-metric 12, i.e., aigp + nexthop-metric. +""" + +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 + +pytestmark = [pytest.mark.bgpd] + + +def build_topo(tgen): + for routern in range(1, 5): + tgen.add_router("r{}".format(routern)) + + switch = tgen.add_switch("s1") + switch.add_link(tgen.gears["r1"]) + switch.add_link(tgen.gears["r2"]) + + switch = tgen.add_switch("s2") + switch.add_link(tgen.gears["r1"]) + switch.add_link(tgen.gears["r3"]) + + switch = tgen.add_switch("s3") + switch.add_link(tgen.gears["r1"]) + switch.add_link(tgen.gears["r4"]) + + switch = tgen.add_switch("s4") + switch.add_link(tgen.gears["r2"]) + switch.add_link(tgen.gears["r3"]) + + +def setup_module(mod): + tgen = Topogen(build_topo, mod.__name__) + tgen.start_topology() + + router_list = tgen.routers() + + for _, (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_OSPF, os.path.join(CWD, "{}/ospfd.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_aigp_rr(): + tgen = get_topogen() + + if tgen.routers_have_failure(): + pytest.skip(tgen.errors) + + r1 = tgen.gears["r1"] + r2 = tgen.gears["r2"] + r3 = tgen.gears["r3"] + r4 = tgen.gears["r4"] + + def _bgp_check_aigp_metric(router, prefix, aigp): + output = json.loads( + router.vtysh_cmd("show bgp ipv4 unicast {} json".format(prefix)) + ) + expected = {"paths": [{"aigpMetric": aigp, "valid": True}]} + return topotest.json_cmp(output, expected) + + + # r2, 10.0.2.2/32 with aigp-metric 2 + test_func = functools.partial(_bgp_check_aigp_metric, r2, "10.0.2.2/32", 2) + _, result = topotest.run_and_expect(test_func, None, count=60, wait=1) + assert result is None, "aigp-metric for 10.0.2.2/32 is not 2" + + # r1, 10.0.2.2/32 with aigp-metric 2 + test_func = functools.partial(_bgp_check_aigp_metric, r1, "10.0.2.2/32", 2) + _, result = topotest.run_and_expect(test_func, None, count=60, wait=1) + assert result is None, "aigp-metric for 10.0.2.2/32 is not 2" + + # r3, 10.0.2.2/32 with aigp-metric 2 + test_func = functools.partial(_bgp_check_aigp_metric, r3, "10.0.2.2/32", 2) + _, result = topotest.run_and_expect(test_func, None, count=60, wait=1) + assert result is None, "aigp-metric for 10.0.2.2/32 is not 2" + + # r4, 10.0.2.2/32 with aigp-metric 12: aigp + nexthop-metric + test_func = functools.partial(_bgp_check_aigp_metric, r4, "10.0.2.2/32", 12) + _, result = topotest.run_and_expect(test_func, None, count=60, wait=1) + assert result is None, "aigp-metric for 10.0.2.2/32 is not 12" + + +if __name__ == "__main__": + args = ["-s"] + sys.argv[1:] + sys.exit(pytest.main(args)) |