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staticd: Add nb callbacks to configure a nexthop for SRv6 uA behavior

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An SRv6 uA SID is associated with the interface and (optionally) the
IPv6 address of the nexthop.

This commit adds the modify and destroy nortbound callbacks required to
set the nexthop.

Signed-off-by: Carmine Scarpitta <cscarpit@cisco.com>
This commit is contained in:
Carmine Scarpitta 2025-02-13 10:59:40 +01:00
parent 7438a94eeb
commit 646c4f95d9
3 changed files with 64 additions and 1 deletions
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7
staticd/static_nb.c
View file

@ -170,6 +170,13 @@ const struct frr_yang_module_info frr_staticd_info = {
.destroy = routing_control_plane_protocols_control_plane_protocol_staticd_segment_routing_srv6_local_sids_sid_paths_interface_destroy,
}
},
{
.xpath = "/frr-routing:routing/control-plane-protocols/control-plane-protocol/frr-staticd:staticd/segment-routing/srv6/static-sids/sid/paths/next-hop",
.cbs = {
.modify = routing_control_plane_protocols_control_plane_protocol_staticd_segment_routing_srv6_local_sids_sid_paths_next_hop_modify,
.destroy = routing_control_plane_protocols_control_plane_protocol_staticd_segment_routing_srv6_local_sids_sid_paths_next_hop_destroy,
}
},
{
.xpath = "/frr-routing:routing/control-plane-protocols/control-plane-protocol/frr-staticd:staticd/segment-routing/srv6/static-sids/sid/locator-name",
.cbs = {

6
staticd/static_nb.h
View file

@ -104,6 +104,10 @@ int routing_control_plane_protocols_control_plane_protocol_staticd_segment_routi
struct nb_cb_modify_args *args);
int routing_control_plane_protocols_control_plane_protocol_staticd_segment_routing_srv6_local_sids_sid_paths_interface_destroy(
struct nb_cb_destroy_args *args);
int routing_control_plane_protocols_control_plane_protocol_staticd_segment_routing_srv6_local_sids_sid_paths_next_hop_modify(
struct nb_cb_modify_args *args);
int routing_control_plane_protocols_control_plane_protocol_staticd_segment_routing_srv6_local_sids_sid_paths_next_hop_destroy(
struct nb_cb_destroy_args *args);
int routing_control_plane_protocols_control_plane_protocol_staticd_segment_routing_srv6_local_sids_sid_locator_name_modify(
struct nb_cb_modify_args *args);
int routing_control_plane_protocols_control_plane_protocol_staticd_segment_routing_srv6_local_sids_sid_locator_name_destroy(
@ -193,7 +197,7 @@ int routing_control_plane_protocols_name_validate(
#define FRR_STATIC_SRV6_SID_INTERFACE_XPATH "/paths[path-index=%u]/interface"
#define FRR_STATIC_SRV6_SID_NEXTHOP_XPATH "/next-hop"
#define FRR_STATIC_SRV6_SID_NEXTHOP_XPATH "/paths[path-index=%u]/next-hop"
#ifdef __cplusplus
}

52
staticd/static_nb_config.c
View file

@ -1284,6 +1284,58 @@ int routing_control_plane_protocols_control_plane_protocol_staticd_segment_routi
return NB_OK;
}
/*
* XPath:
* /frr-routing:routing/control-plane-protocols/control-plane-protocol/frr-staticd:staticd/segment-routing/srv6/locators/locator/static-sids/sid/paths/next-hop
*/
int routing_control_plane_protocols_control_plane_protocol_staticd_segment_routing_srv6_local_sids_sid_paths_next_hop_modify(
struct nb_cb_modify_args *args)
{
struct static_srv6_sid *sid;
struct ipaddr nexthop;
switch (args->event) {
case NB_EV_VALIDATE:
zlog_info("validating nexthop %pI6", &nexthop.ipaddr_v6);
yang_dnode_get_ip(&nexthop, args->dnode, "../next-hop");
if (!IS_IPADDR_V6(&nexthop)) {
snprintf(args->errmsg, args->errmsg_len,
"%% Nexthop must be an IPv6 address");
return NB_ERR_VALIDATION;
}
break;
case NB_EV_ABORT:
case NB_EV_PREPARE:
break;
case NB_EV_APPLY:
sid = nb_running_get_entry(args->dnode, NULL, true);
/* Release and uninstall existing SID, if any, before requesting the new one */
if (CHECK_FLAG(sid->flags, STATIC_FLAG_SRV6_SID_VALID)) {
static_zebra_release_srv6_sid(sid);
UNSET_FLAG(sid->flags, STATIC_FLAG_SRV6_SID_VALID);
}
if (CHECK_FLAG(sid->flags, STATIC_FLAG_SRV6_SID_SENT_TO_ZEBRA)) {
static_zebra_srv6_sid_uninstall(sid);
UNSET_FLAG(sid->flags, STATIC_FLAG_SRV6_SID_SENT_TO_ZEBRA);
}
yang_dnode_get_ip(&nexthop, args->dnode, "../next-hop");
sid->attributes.nh6 = nexthop.ipaddr_v6;
break;
}
return NB_OK;
}
int routing_control_plane_protocols_control_plane_protocol_staticd_segment_routing_srv6_local_sids_sid_paths_next_hop_destroy(
struct nb_cb_destroy_args *args)
{
return NB_OK;
}
/*
* XPath:
* /frr-routing:routing/control-plane-protocols/control-plane-protocol/frr-staticd:staticd/segment-routing/srv6/locators/locator/static-sids/sid/vrf-name