zebra: add 'mpls fec nexthop-resolution' command to vtysh

Commands added:

r3# configure
r3(config)# mpls
  fec    MPLS FEC table
  label  Label configuration
  ldp    Label Distribution Protocol
  lsp    Establish label switched path
r3(config)# mpls fec
  mpls fec nexthop-resolution  Authorise nexthop resolution
				over all labeled routes.
r3(config)# mpls fec mpls fec nexthop-resolution

r3# configure
r3(config)# vrf default
r3(config-vrf)# mpls
  fec  MPLS FEC table
r3(config-vrf)# mpls fec
  mpls fec nexthop-resolution  Authorise nexthop resolution
				over all labeled routes.
r3(config-vrf)# mpls fec nexthop-resolution

east-vm# show running-config
Building configuration...
...
!
mpls fec nexthop-resolution
!
...

Signed-off-by: Dmytro Shytyi <dmytro.shytyi@6wind.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/zebra/zebra_nb_config.c b/zebra/zebra_nb_config.c
index ae6232a1bb..09c0091ec6 100644
--- a/zebra/zebra_nb_config.c
+++ b/zebra/zebra_nb_config.c
@@ -3781,6 +3781,59 @@ int lib_vrf_zebra_netns_table_range_end_modify(struct nb_cb_modify_args *args)
 }
 
 /*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/mpls/fec-nexthop-resolution
+ */
+int lib_vrf_zebra_mpls_fec_nexthop_resolution_modify(
+	struct nb_cb_modify_args *args)
+{
+	struct vrf *vrf;
+	struct zebra_vrf *zvrf;
+	bool fec_nexthop_resolution;
+
+	if (args->event != NB_EV_APPLY)
+		return NB_OK;
+
+	vrf = nb_running_get_entry(args->dnode, NULL, true);
+	zvrf = vrf->info;
+
+	fec_nexthop_resolution = yang_dnode_get_bool(args->dnode, NULL);
+
+	if (zvrf->zebra_mpls_fec_nexthop_resolution == fec_nexthop_resolution)
+		return NB_OK;
+
+	zvrf->zebra_mpls_fec_nexthop_resolution = fec_nexthop_resolution;
+
+	zebra_mpls_fec_nexthop_resolution_update(zvrf);
+
+	return NB_OK;
+}
+
+int lib_vrf_zebra_mpls_fec_nexthop_resolution_destroy(
+	struct nb_cb_destroy_args *args)
+{
+	struct vrf *vrf;
+	struct zebra_vrf *zvrf;
+	bool fec_nexthop_resolution;
+
+	if (args->event != NB_EV_APPLY)
+		return NB_OK;
+
+	vrf = nb_running_get_entry(args->dnode, NULL, true);
+	zvrf = vrf->info;
+
+	fec_nexthop_resolution = DFLT_ZEBRA_IP_NHT_RESOLVE_VIA_DEFAULT;
+
+	if (zvrf->zebra_mpls_fec_nexthop_resolution == fec_nexthop_resolution)
+		return NB_OK;
+
+	zvrf->zebra_mpls_fec_nexthop_resolution = fec_nexthop_resolution;
+
+	zebra_mpls_fec_nexthop_resolution_update(zvrf);
+
+	return NB_OK;
+}
+
+/*
  * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/l3vni-id
  */
 int lib_vrf_zebra_l3vni_id_modify(struct nb_cb_modify_args *args)