Adding upstream version 8.4.4.upstream/8.4.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1001 insertions, 0 deletions

diff --git a/zebra/zebra_nb_state.c b/zebra/zebra_nb_state.c
new file mode 100644
index 0000000..219e4d0
--- /dev/null
+++ b/zebra/zebra_nb_state.c
@@ -0,0 +1,1001 @@
+/*
+ * Copyright (C) 2020  Cumulus Networks, Inc.
+ * Chirag Shah
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <zebra.h>
+#include "northbound.h"
+#include "libfrr.h"
+#include "zebra_nb.h"
+#include "zebra/interface.h"
+#include "zebra/zebra_router.h"
+#include "zebra/debug.h"
+#include "printfrr.h"
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-zebra:zebra/state/up-count
+ */
+struct yang_data *
+lib_interface_zebra_state_up_count_get_elem(struct nb_cb_get_elem_args *args)
+{
+	const struct interface *ifp = args->list_entry;
+	struct zebra_if *zebra_if;
+
+	zebra_if = ifp->info;
+
+	return yang_data_new_uint16(args->xpath, zebra_if->up_count);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-zebra:zebra/state/down-count
+ */
+struct yang_data *
+lib_interface_zebra_state_down_count_get_elem(struct nb_cb_get_elem_args *args)
+{
+	const struct interface *ifp = args->list_entry;
+	struct zebra_if *zebra_if;
+
+	zebra_if = ifp->info;
+
+	return yang_data_new_uint16(args->xpath, zebra_if->down_count);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-zebra:zebra/state/zif-type
+ */
+struct yang_data *
+lib_interface_zebra_state_zif_type_get_elem(struct nb_cb_get_elem_args *args)
+{
+	/* TODO: implement me. */
+	return NULL;
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-zebra:zebra/state/ptm-status
+ */
+struct yang_data *
+lib_interface_zebra_state_ptm_status_get_elem(struct nb_cb_get_elem_args *args)
+{
+	/* TODO: implement me. */
+	return NULL;
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-zebra:zebra/state/vlan-id
+ */
+struct yang_data *
+lib_interface_zebra_state_vlan_id_get_elem(struct nb_cb_get_elem_args *args)
+{
+	const struct interface *ifp = args->list_entry;
+	struct zebra_if *zebra_if;
+	struct zebra_l2info_vlan *vlan_info;
+
+	if (!IS_ZEBRA_IF_VLAN(ifp))
+		return NULL;
+
+	zebra_if = ifp->info;
+	vlan_info = &zebra_if->l2info.vl;
+
+	return yang_data_new_uint16(args->xpath, vlan_info->vid);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-zebra:zebra/state/vni-id
+ */
+struct yang_data *
+lib_interface_zebra_state_vni_id_get_elem(struct nb_cb_get_elem_args *args)
+{
+	const struct interface *ifp = args->list_entry;
+	struct zebra_if *zebra_if;
+	struct zebra_l2info_vxlan *vxlan_info;
+
+	if (!IS_ZEBRA_IF_VXLAN(ifp))
+		return NULL;
+
+	zebra_if = ifp->info;
+	vxlan_info = &zebra_if->l2info.vxl;
+
+	return yang_data_new_uint32(args->xpath, vxlan_info->vni);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-zebra:zebra/state/remote-vtep
+ */
+struct yang_data *
+lib_interface_zebra_state_remote_vtep_get_elem(struct nb_cb_get_elem_args *args)
+{
+	const struct interface *ifp = args->list_entry;
+	struct zebra_if *zebra_if;
+	struct zebra_l2info_vxlan *vxlan_info;
+
+	if (!IS_ZEBRA_IF_VXLAN(ifp))
+		return NULL;
+
+	zebra_if = ifp->info;
+	vxlan_info = &zebra_if->l2info.vxl;
+
+	return yang_data_new_ipv4(args->xpath, &vxlan_info->vtep_ip);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-zebra:zebra/state/mcast-group
+ */
+struct yang_data *
+lib_interface_zebra_state_mcast_group_get_elem(struct nb_cb_get_elem_args *args)
+{
+	const struct interface *ifp = args->list_entry;
+	struct zebra_if *zebra_if;
+	struct zebra_l2info_vxlan *vxlan_info;
+
+	if (!IS_ZEBRA_IF_VXLAN(ifp))
+		return NULL;
+
+	zebra_if = ifp->info;
+	vxlan_info = &zebra_if->l2info.vxl;
+
+	return yang_data_new_ipv4(args->xpath, &vxlan_info->mcast_grp);
+}
+
+const void *lib_vrf_zebra_ribs_rib_get_next(struct nb_cb_get_next_args *args)
+{
+	struct vrf *vrf = (struct vrf *)args->parent_list_entry;
+	struct zebra_router_table *zrt =
+		(struct zebra_router_table *)args->list_entry;
+
+	struct zebra_vrf *zvrf;
+	afi_t afi;
+	safi_t safi;
+
+	zvrf = zebra_vrf_lookup_by_id(vrf->vrf_id);
+
+	if (args->list_entry == NULL) {
+		afi = AFI_IP;
+		safi = SAFI_UNICAST;
+
+		zrt = zebra_router_find_zrt(zvrf, zvrf->table_id, afi, safi);
+		if (zrt == NULL)
+			return NULL;
+	} else {
+		zrt = RB_NEXT(zebra_router_table_head, zrt);
+		/* vrf_id/ns_id do not match, only walk for the given VRF */
+		while (zrt && zrt->ns_id != zvrf->zns->ns_id)
+			zrt = RB_NEXT(zebra_router_table_head, zrt);
+	}
+
+	return zrt;
+}
+
+int lib_vrf_zebra_ribs_rib_get_keys(struct nb_cb_get_keys_args *args)
+{
+	const struct zebra_router_table *zrt = args->list_entry;
+
+	args->keys->num = 2;
+
+	snprintfrr(args->keys->key[0], sizeof(args->keys->key[0]), "%s",
+		   yang_afi_safi_value2identity(zrt->afi, zrt->safi));
+	snprintfrr(args->keys->key[1], sizeof(args->keys->key[1]), "%u",
+		   zrt->tableid);
+
+	return NB_OK;
+}
+
+const void *
+lib_vrf_zebra_ribs_rib_lookup_entry(struct nb_cb_lookup_entry_args *args)
+{
+	struct vrf *vrf = (struct vrf *)args->parent_list_entry;
+	struct zebra_vrf *zvrf;
+	afi_t afi;
+	safi_t safi;
+	uint32_t table_id = 0;
+
+	zvrf = zebra_vrf_lookup_by_id(vrf->vrf_id);
+
+	yang_afi_safi_identity2value(args->keys->key[0], &afi, &safi);
+	table_id = yang_str2uint32(args->keys->key[1]);
+	/* table_id 0 assume vrf's table_id. */
+	if (!table_id)
+		table_id = zvrf->table_id;
+
+	return zebra_router_find_zrt(zvrf, table_id, afi, safi);
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/afi-safi-name
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_afi_safi_name_get_elem(struct nb_cb_get_elem_args *args)
+{
+	const struct zebra_router_table *zrt = args->list_entry;
+
+	return yang_data_new_string(args->xpath,
+		yang_afi_safi_value2identity(zrt->afi, zrt->safi));
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/table-id
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_table_id_get_elem(struct nb_cb_get_elem_args *args)
+{
+	const struct zebra_router_table *zrt = args->list_entry;
+
+	return yang_data_new_uint32(args->xpath, zrt->tableid);
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route
+ */
+const void *
+lib_vrf_zebra_ribs_rib_route_get_next(struct nb_cb_get_next_args *args)
+{
+	const struct zebra_router_table *zrt = args->parent_list_entry;
+	struct route_node *rn = (struct route_node *)args->list_entry;
+
+	if (args->list_entry == NULL)
+		rn = route_top(zrt->table);
+	else
+		rn = srcdest_route_next(rn);
+	/* Optimization: skip empty route nodes. */
+	while (rn && rn->info == NULL)
+		rn = route_next(rn);
+
+	/* Skip link-local routes. */
+	if (rn && rn->p.family == AF_INET6
+	    && IN6_IS_ADDR_LINKLOCAL(&rn->p.u.prefix6))
+		return NULL;
+
+	return rn;
+}
+
+int lib_vrf_zebra_ribs_rib_route_get_keys(struct nb_cb_get_keys_args *args)
+{
+	const struct route_node *rn = args->list_entry;
+
+	args->keys->num = 1;
+	prefix2str(&rn->p, args->keys->key[0], sizeof(args->keys->key[0]));
+
+	return NB_OK;
+}
+
+const void *
+lib_vrf_zebra_ribs_rib_route_lookup_entry(struct nb_cb_lookup_entry_args *args)
+{
+	const struct zebra_router_table *zrt = args->parent_list_entry;
+	struct prefix p;
+	struct route_node *rn;
+
+	yang_str2prefix(args->keys->key[0], &p);
+
+	rn = route_node_lookup(zrt->table, &p);
+
+	if (!rn)
+		return NULL;
+
+	route_unlock_node(rn);
+
+	return rn;
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/prefix
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_prefix_get_elem(struct nb_cb_get_elem_args *args)
+{
+	const struct route_node *rn = args->list_entry;
+
+	return yang_data_new_prefix(args->xpath, &rn->p);
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry
+ */
+const void *lib_vrf_zebra_ribs_rib_route_route_entry_get_next(
+	struct nb_cb_get_next_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+	struct route_node *rn = (struct route_node *)args->parent_list_entry;
+
+	if (args->list_entry == NULL)
+		RNODE_FIRST_RE(rn, re);
+	else
+		RNODE_NEXT_RE(rn, re);
+
+	return re;
+}
+
+int lib_vrf_zebra_ribs_rib_route_route_entry_get_keys(
+	struct nb_cb_get_keys_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	args->keys->num = 1;
+
+	strlcpy(args->keys->key[0], zebra_route_string(re->type),
+		sizeof(args->keys->key[0]));
+
+	return NB_OK;
+}
+
+const void *lib_vrf_zebra_ribs_rib_route_route_entry_lookup_entry(
+	struct nb_cb_lookup_entry_args *args)
+{
+	struct route_node *rn = (struct route_node *)args->parent_list_entry;
+	struct route_entry *re = NULL;
+	int proto_type = 0;
+	afi_t afi;
+
+	afi = family2afi(rn->p.family);
+	proto_type = proto_redistnum(afi, args->keys->key[0]);
+
+	RNODE_FOREACH_RE (rn, re) {
+		if (proto_type == re->type)
+			return re;
+	}
+
+	return NULL;
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/protocol
+ */
+struct yang_data *lib_vrf_zebra_ribs_rib_route_route_entry_protocol_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	return yang_data_new_enum(args->xpath, re->type);
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/instance
+ */
+struct yang_data *lib_vrf_zebra_ribs_rib_route_route_entry_instance_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	if (re->instance)
+		return yang_data_new_uint16(args->xpath, re->instance);
+
+	return NULL;
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/distance
+ */
+struct yang_data *lib_vrf_zebra_ribs_rib_route_route_entry_distance_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	return yang_data_new_uint8(args->xpath, re->distance);
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/metric
+ */
+struct yang_data *lib_vrf_zebra_ribs_rib_route_route_entry_metric_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	return yang_data_new_uint32(args->xpath, re->metric);
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/tag
+ */
+struct yang_data *lib_vrf_zebra_ribs_rib_route_route_entry_tag_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	if (re->tag)
+		return yang_data_new_uint32(args->xpath, re->tag);
+
+	return NULL;
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/selected
+ */
+struct yang_data *lib_vrf_zebra_ribs_rib_route_route_entry_selected_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	if (CHECK_FLAG(re->flags, ZEBRA_FLAG_SELECTED))
+		return yang_data_new_empty(args->xpath);
+
+	return NULL;
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/installed
+ */
+struct yang_data *lib_vrf_zebra_ribs_rib_route_route_entry_installed_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	if (CHECK_FLAG(re->status, ROUTE_ENTRY_INSTALLED))
+		return yang_data_new_empty(args->xpath);
+
+	return NULL;
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/failed
+ */
+struct yang_data *lib_vrf_zebra_ribs_rib_route_route_entry_failed_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	if (CHECK_FLAG(re->status, ROUTE_ENTRY_FAILED))
+		return yang_data_new_empty(args->xpath);
+
+	return NULL;
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/queued
+ */
+struct yang_data *lib_vrf_zebra_ribs_rib_route_route_entry_queued_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	if (CHECK_FLAG(re->status, ROUTE_ENTRY_QUEUED))
+		return yang_data_new_empty(args->xpath);
+
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/internal-flags
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_internal_flags_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	if (re->flags)
+		return yang_data_new_int32(args->xpath, re->flags);
+
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/internal-status
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_internal_status_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	if (re->status)
+		return yang_data_new_int32(args->xpath, re->status);
+
+	return NULL;
+}
+
+/*
+ * XPath: /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/uptime
+ */
+struct yang_data *lib_vrf_zebra_ribs_rib_route_route_entry_uptime_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	return yang_data_new_date_and_time(args->xpath, re->uptime);
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/id
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_id_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct route_entry *re = (struct route_entry *)args->list_entry;
+
+	return yang_data_new_uint32(args->xpath, re->nhe->id);
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop
+ */
+const void *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_get_next(
+	struct nb_cb_get_next_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+	struct route_entry *re = (struct route_entry *)args->parent_list_entry;
+	struct nhg_hash_entry *nhe = re->nhe;
+
+	if (args->list_entry == NULL) {
+		nexthop = nhe->nhg.nexthop;
+	} else
+		nexthop = nexthop_next(nexthop);
+
+	return nexthop;
+}
+
+int lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_get_keys(
+	struct nb_cb_get_keys_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+
+	args->keys->num = 4;
+
+	strlcpy(args->keys->key[0], yang_nexthop_type2str(nexthop->type),
+		sizeof(args->keys->key[0]));
+
+	snprintfrr(args->keys->key[1], sizeof(args->keys->key[1]), "%" PRIu32,
+		   nexthop->vrf_id);
+
+	switch (nexthop->type) {
+	case NEXTHOP_TYPE_IPV4:
+	case NEXTHOP_TYPE_IPV4_IFINDEX:
+		snprintfrr(args->keys->key[2], sizeof(args->keys->key[2]),
+			   "%pI4", &nexthop->gate.ipv4);
+		if (nexthop->ifindex)
+			strlcpy(args->keys->key[3],
+				ifindex2ifname(nexthop->ifindex,
+					       nexthop->vrf_id),
+				sizeof(args->keys->key[3]));
+		else
+			/* no ifindex */
+			strlcpy(args->keys->key[3], " ",
+				sizeof(args->keys->key[3]));
+
+		break;
+	case NEXTHOP_TYPE_IPV6:
+	case NEXTHOP_TYPE_IPV6_IFINDEX:
+		snprintfrr(args->keys->key[2], sizeof(args->keys->key[2]),
+			   "%pI6", &nexthop->gate.ipv6);
+
+		if (nexthop->ifindex)
+			strlcpy(args->keys->key[3],
+				ifindex2ifname(nexthop->ifindex,
+					       nexthop->vrf_id),
+				sizeof(args->keys->key[3]));
+		else
+			/* no ifindex */
+			strlcpy(args->keys->key[3], " ",
+				sizeof(args->keys->key[3]));
+
+		break;
+	case NEXTHOP_TYPE_IFINDEX:
+		strlcpy(args->keys->key[2], "", sizeof(args->keys->key[2]));
+		strlcpy(args->keys->key[3],
+			ifindex2ifname(nexthop->ifindex, nexthop->vrf_id),
+			sizeof(args->keys->key[3]));
+
+		break;
+	case NEXTHOP_TYPE_BLACKHOLE:
+		/* Gateway IP */
+		strlcpy(args->keys->key[2], "", sizeof(args->keys->key[2]));
+		strlcpy(args->keys->key[3], " ", sizeof(args->keys->key[3]));
+		break;
+	default:
+		break;
+	}
+
+	return NB_OK;
+}
+
+const void *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_lookup_entry(
+	struct nb_cb_lookup_entry_args *args)
+{
+	struct nhg_hash_entry *nhe;
+	struct nexthop nexthop_lookup = {};
+	struct nexthop *nexthop;
+	const char *nh_type_str;
+
+	nhe = (struct nhg_hash_entry *)args->parent_list_entry;
+	nexthop_lookup.vrf_id = nhe->vrf_id;
+
+	/*
+	 * Get nexthop type.
+	 * TODO: use yang_str2enum() instead.
+	 */
+	nh_type_str = args->keys->key[0];
+	if (strmatch(nh_type_str, "ifindex"))
+		nexthop_lookup.type = NEXTHOP_TYPE_IFINDEX;
+	else if (strmatch(nh_type_str, "ip4"))
+		nexthop_lookup.type = NEXTHOP_TYPE_IPV4;
+	else if (strmatch(nh_type_str, "ip4-ifindex"))
+		nexthop_lookup.type = NEXTHOP_TYPE_IPV4_IFINDEX;
+	else if (strmatch(nh_type_str, "ip6"))
+		nexthop_lookup.type = NEXTHOP_TYPE_IPV6;
+	else if (strmatch(nh_type_str, "ip6-ifindex"))
+		nexthop_lookup.type = NEXTHOP_TYPE_IPV6_IFINDEX;
+	else if (strmatch(nh_type_str, "blackhole"))
+		nexthop_lookup.type = NEXTHOP_TYPE_BLACKHOLE;
+	else
+		/* unexpected */
+		return NULL;
+
+	/* Get nexthop address. */
+	switch (nexthop_lookup.type) {
+	case NEXTHOP_TYPE_IPV4:
+	case NEXTHOP_TYPE_IPV4_IFINDEX:
+		yang_str2ipv4(args->keys->key[1], &nexthop_lookup.gate.ipv4);
+		break;
+	case NEXTHOP_TYPE_IPV6:
+	case NEXTHOP_TYPE_IPV6_IFINDEX:
+		yang_str2ipv6(args->keys->key[1], &nexthop_lookup.gate.ipv6);
+		break;
+	case NEXTHOP_TYPE_IFINDEX:
+	case NEXTHOP_TYPE_BLACKHOLE:
+		break;
+	}
+
+	/* Get nexthop interface. */
+	switch (nexthop_lookup.type) {
+	case NEXTHOP_TYPE_IPV4_IFINDEX:
+	case NEXTHOP_TYPE_IPV6_IFINDEX:
+	case NEXTHOP_TYPE_IFINDEX:
+		nexthop_lookup.ifindex =
+			ifname2ifindex(args->keys->key[2], nhe->vrf_id);
+		break;
+	case NEXTHOP_TYPE_IPV4:
+	case NEXTHOP_TYPE_IPV6:
+	case NEXTHOP_TYPE_BLACKHOLE:
+		break;
+	}
+
+	/* Lookup requested nexthop (ignore weight and metric). */
+	for (ALL_NEXTHOPS(nhe->nhg, nexthop)) {
+		nexthop_lookup.weight = nexthop->weight;
+		nexthop_lookup.src = nexthop->src;
+		if (nexthop_same_no_labels(&nexthop_lookup, nexthop))
+			return nexthop;
+	}
+
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/nh-type
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_nh_type_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+
+	switch (nexthop->type) {
+	case NEXTHOP_TYPE_IFINDEX:
+		return yang_data_new_string(args->xpath, "ifindex");
+		break;
+	case NEXTHOP_TYPE_IPV4:
+		return yang_data_new_string(args->xpath, "ip4");
+		break;
+	case NEXTHOP_TYPE_IPV4_IFINDEX:
+		return yang_data_new_string(args->xpath, "ip4-ifindex");
+		break;
+	case NEXTHOP_TYPE_IPV6:
+		return yang_data_new_string(args->xpath, "ip6");
+		break;
+	case NEXTHOP_TYPE_IPV6_IFINDEX:
+		return yang_data_new_string(args->xpath, "ip6-ifindex");
+		break;
+	default:
+		break;
+	}
+
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/vrf
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_vrf_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+
+	return yang_data_new_string(args->xpath,
+				    vrf_id_to_name(nexthop->vrf_id));
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/gateway
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_gateway_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+	struct ipaddr addr;
+
+	switch (nexthop->type) {
+	case NEXTHOP_TYPE_IPV4:
+	case NEXTHOP_TYPE_IPV4_IFINDEX:
+		addr.ipa_type = IPADDR_V4;
+		memcpy(&addr.ipaddr_v4, &(nexthop->gate.ipv4),
+		       sizeof(struct in_addr));
+		break;
+	case NEXTHOP_TYPE_IPV6:
+	case NEXTHOP_TYPE_IPV6_IFINDEX:
+		addr.ipa_type = IPADDR_V6;
+		memcpy(&addr.ipaddr_v6, &(nexthop->gate.ipv6),
+		       sizeof(struct in6_addr));
+		break;
+	case NEXTHOP_TYPE_BLACKHOLE:
+	case NEXTHOP_TYPE_IFINDEX:
+		/* No addr here */
+		return yang_data_new_string(args->xpath, "");
+		break;
+	default:
+		break;
+	}
+
+	return yang_data_new_ip(args->xpath, &addr);
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/interface
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_interface_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+
+	if (nexthop->ifindex)
+		return yang_data_new_string(
+			args->xpath,
+			ifindex2ifname(nexthop->ifindex, nexthop->vrf_id));
+
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/bh-type
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_bh_type_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+	const char *type_str = "";
+
+	if (nexthop->type != NEXTHOP_TYPE_BLACKHOLE)
+		return NULL;
+
+	switch (nexthop->bh_type) {
+	case BLACKHOLE_NULL:
+		type_str = "null";
+		break;
+	case BLACKHOLE_REJECT:
+		type_str = "reject";
+		break;
+	case BLACKHOLE_ADMINPROHIB:
+		type_str = "prohibited";
+		break;
+	case BLACKHOLE_UNSPEC:
+		type_str = "unspec";
+		break;
+	}
+
+	return yang_data_new_string(args->xpath, type_str);
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/onlink
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_onlink_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+
+	if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK))
+		return yang_data_new_bool(args->xpath, true);
+
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/srte-color
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_color_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+
+	if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_SRTE))
+		return yang_data_new_uint32(args->xpath, nexthop->srte_color);
+
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/mpls-label-stack/entry
+ */
+const void *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_mpls_label_stack_entry_get_next(
+	struct nb_cb_get_next_args *args)
+{
+	/* TODO: implement me. */
+	return NULL;
+}
+
+int lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_mpls_label_stack_entry_get_keys(
+	struct nb_cb_get_keys_args *args)
+{
+	/* TODO: implement me. */
+	return NB_OK;
+}
+
+const void *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_mpls_label_stack_entry_lookup_entry(
+	struct nb_cb_lookup_entry_args *args)
+{
+	/* TODO: implement me. */
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/mpls-label-stack/entry/id
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_mpls_label_stack_entry_id_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	/* TODO: implement me. */
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/mpls-label-stack/entry/label
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_mpls_label_stack_entry_label_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	/* TODO: implement me. */
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/mpls-label-stack/entry/ttl
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_mpls_label_stack_entry_ttl_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	/* TODO: implement me. */
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/mpls-label-stack/entry/traffic-class
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_mpls_label_stack_entry_traffic_class_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	/* TODO: implement me. */
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/duplicate
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_duplicate_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+
+	if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_DUPLICATE))
+		return yang_data_new_empty(args->xpath);
+
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/recursive
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_recursive_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+
+	if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
+		return yang_data_new_empty(args->xpath);
+
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/active
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_active_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+
+	if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE))
+		return yang_data_new_empty(args->xpath);
+
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/fib
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_fib_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+
+	if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB))
+		return yang_data_new_empty(args->xpath);
+
+	return NULL;
+}
+
+/*
+ * XPath:
+ * /frr-vrf:lib/vrf/frr-zebra:zebra/ribs/rib/route/route-entry/nexthop-group/nexthop/weight
+ */
+struct yang_data *
+lib_vrf_zebra_ribs_rib_route_route_entry_nexthop_group_nexthop_weight_get_elem(
+	struct nb_cb_get_elem_args *args)
+{
+	struct nexthop *nexthop = (struct nexthop *)args->list_entry;
+
+	if (nexthop->weight)
+		return yang_data_new_uint8(args->xpath, nexthop->weight);
+
+	return NULL;
+}