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Merge pull request #17913 from Sokolmish/bgp-sid-release

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bgpd: Release SID on router deletion
This commit is contained in:
Carmine Scarpitta 2025-02-03 14:52:00 +01:00 committed by GitHub
commit 0768c620e0
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GPG Key ID: B5690EEEBB952194
2 changed files with 48 additions and 4 deletions
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22
bgpd/bgpd.c
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@ -3988,6 +3988,7 @@ int bgp_delete(struct bgp *bgp)
uint32_t a_ann_cnt = 0, a_l2_cnt = 0, a_l3_cnt = 0;
struct bgp *bgp_to_proc = NULL;
struct bgp *bgp_to_proc_next = NULL;
struct bgp *bgp_default = bgp_get_default();
assert(bgp);
@ -4041,13 +4042,26 @@ int bgp_delete(struct bgp *bgp)
bgp_soft_reconfig_table_task_cancel(bgp, NULL, NULL);
/* make sure we withdraw any exported routes */
vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN, AFI_IP, bgp_get_default(),
bgp);
vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN, AFI_IP6, bgp_get_default(),
bgp);
vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN, AFI_IP, bgp_default, bgp);
vpn_leak_prechange(BGP_VPN_POLICY_DIR_TOVPN, AFI_IP6, bgp_default, bgp);
bgp_vpn_leak_unimport(bgp);
/*
* Release SRv6 SIDs, like it's done in `vpn_leak_postchange()`
* and bgp_sid_vpn_export_cmd/af_sid_vpn_export_cmd commands.
*/
bgp->tovpn_sid_index = 0;
UNSET_FLAG(bgp->vrf_flags, BGP_VRF_TOVPN_SID_AUTO);
delete_vrf_tovpn_sid_per_vrf(bgp_default, bgp);
for (afi = AFI_IP; afi < AFI_MAX; afi++) {
bgp->vpn_policy[afi].tovpn_sid_index = 0;
UNSET_FLAG(bgp->vpn_policy[afi].flags, BGP_VPN_POLICY_TOVPN_SID_AUTO);
delete_vrf_tovpn_sid_per_af(bgp_default, bgp, afi);
vpn_leak_zebra_vrf_sid_withdraw(bgp, afi);
}
bgp_vpn_release_label(bgp, AFI_IP, true);
bgp_vpn_release_label(bgp, AFI_IP6, true);

30
tests/topotests/bgp_srv6_sid_reachability/test_bgp_srv6_sid_reachability.py
View File

@ -159,6 +159,36 @@ def test_sid_reachable_again_bgp_update():
check_ping("c11", "192.168.2.1", True, 10, 1)
def test_sid_unreachable_no_router():
get_topogen().gears["r2"].vtysh_cmd(
"""
configure terminal
no router bgp 65002 vrf vrf10
"""
)
check_ping("c11", "192.168.2.1", False, 10, 1)
def test_sid_reachable_again_no_router():
get_topogen().gears["r2"].vtysh_cmd(
"""
configure terminal
router bgp 65002 vrf vrf10
bgp router-id 192.0.2.2
!
address-family ipv4 unicast
redistribute connected
sid vpn export 1
rd vpn export 65002:10
rt vpn both 0:10
import vpn
export vpn
exit-address-family
"""
)
check_ping("c11", "192.168.2.1", True, 10, 1)
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))