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bgpd: bmp, define hook for router-id updates

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At startup, if bmp loc-rib is enabled, the peer_id of the
loc-rib per peer header message has the router-id set to 0.0.0.0.
Actually, the router-id has been updated after the peer up
message is sent, and the information is not refreshed.

Create a hook API to handle router id events: withdraw and
updates. Use that hook in BMP module to send peer down, and
peer up events when necessary.

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
This commit is contained in:
Philippe Guibert 2024-10-30 09:45:47 +01:00
parent bb02fb186a
commit f3c17d94e0
3 changed files with 28 additions and 0 deletions
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23
bgpd/bgp_bmp.c
View File

@ -3179,6 +3179,28 @@ static int bgp_bmp_early_fini(void)
return 0;
}
/* called when the routerid of an instance changes */
static int bmp_routerid_update(struct bgp *bgp, bool withdraw)
{
struct bmp_bgp *bmpbgp = bmp_bgp_find(bgp);
if (!bmpbgp)
return 0;
bmp_bgp_update_vrf_status(bmpbgp, vrf_state_unknown);
if (bmpbgp->vrf_state == vrf_state_down)
/* do not send peer events, router id will not be enough to set state to up
*/
return 0;
/* vrf_state is up: trigger a peer event
*/
bmp_send_all_safe(bmpbgp, bmp_peerstate(bgp->peer_self, withdraw));
return 1;
}
/* called when a bgp instance goes up/down, implying that the underlying VRF
* has been created or deleted in zebra
*/
@ -3232,6 +3254,7 @@ static int bgp_bmp_module_init(void)
hook_register(frr_early_fini, bgp_bmp_early_fini);
hook_register(bgp_instance_state, bmp_vrf_state_changed);
hook_register(bgp_vrf_status_changed, bmp_vrf_itf_state_changed);
hook_register(bgp_routerid_update, bmp_routerid_update);
return 0;
}

4
bgpd/bgpd.c
View File

@ -86,6 +86,7 @@ DEFINE_QOBJ_TYPE(bgp);
DEFINE_QOBJ_TYPE(peer);
DEFINE_HOOK(bgp_inst_delete, (struct bgp *bgp), (bgp));
DEFINE_HOOK(bgp_instance_state, (struct bgp *bgp), (bgp));
DEFINE_HOOK(bgp_routerid_update, (struct bgp *bgp, bool withdraw), (bgp, withdraw));
/* BGP process wide configuration. */
static struct bgp_master bgp_master;
@ -301,6 +302,8 @@ static int bgp_router_id_set(struct bgp *bgp, const struct in_addr *id,
vpn_handle_router_id_update(bgp, true, is_config);
hook_call(bgp_routerid_update, bgp, true);
IPV4_ADDR_COPY(&bgp->router_id, id);
/* Set all peer's local identifier with this value. */
@ -318,6 +321,7 @@ static int bgp_router_id_set(struct bgp *bgp, const struct in_addr *id,
vpn_handle_router_id_update(bgp, false, is_config);
hook_call(bgp_routerid_update, bgp, false);
return 0;
}

1
bgpd/bgpd.h
View File

@ -907,6 +907,7 @@ DECLARE_HOOK(bgp_config_end, (struct bgp *bgp), (bgp));
DECLARE_HOOK(bgp_hook_vrf_update, (struct vrf *vrf, bool enabled),
(vrf, enabled));
DECLARE_HOOK(bgp_instance_state, (struct bgp *bgp), (bgp));
DECLARE_HOOK(bgp_routerid_update, (struct bgp *bgp, bool withdraw), (bgp, withdraw));
/* Thread callback information */
struct afi_safi_info {