eigrpd: migrate old CLI to northbound

Move all configuration commands to the new CLI code (`eigrp_cli.c`),
implement the northbound and do all the necessary wiring to get it
working.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>

1 files changed, 920 insertions, 0 deletions

diff --git a/eigrpd/eigrp_cli.c b/eigrpd/eigrp_cli.c
new file mode 100644
index 0000000000..ba657a7d5d
--- /dev/null
+++ b/eigrpd/eigrp_cli.c
@@ -0,0 +1,920 @@
+/*
+ * EIGRP daemon CLI implementation.
+ *
+ * Copyright (C) 2019 Network Device Education Foundation, Inc. ("NetDEF")
+ *                    Rafael Zalamena
+ *
+ * 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; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA.
+ */
+
+#include <zebra.h>
+
+#include "lib/command.h"
+#include "lib/log.h"
+#include "lib/northbound_cli.h"
+
+#include "eigrp_structs.h"
+#include "eigrpd.h"
+#include "eigrp_zebra.h"
+
+#ifndef VTYSH_EXTRACT_PL
+#include "eigrpd/eigrp_cli_clippy.c"
+#endif /* VTYSH_EXTRACT_PL */
+
+/*
+ * XPath: /frr-eigrpd:eigrpd/instance
+ */
+DEFPY_NOSH(
+	router_eigrp,
+	router_eigrp_cmd,
+	"router eigrp (1-65535)$as",
+	ROUTER_STR
+	EIGRP_STR
+	AS_STR)
+{
+	char xpath[XPATH_MAXLEN];
+	int rv;
+
+	snprintf(xpath, sizeof(xpath),
+		 "/frr-eigrpd:eigrpd/instance[asn='%s'][vrf='']",
+		 as_str);
+
+	nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
+	rv = nb_cli_apply_changes(vty, NULL);
+	if (rv == CMD_SUCCESS)
+		VTY_PUSH_XPATH(EIGRP_NODE, xpath);
+
+	return rv;
+}
+
+DEFPY_NOSH(
+	no_router_eigrp,
+	no_router_eigrp_cmd,
+	"no router eigrp (1-65535)$as",
+	NO_STR
+	ROUTER_STR
+	EIGRP_STR
+	AS_STR)
+{
+	char xpath[XPATH_MAXLEN];
+
+	snprintf(xpath, sizeof(xpath),
+		 "/frr-eigrpd:eigrpd/instance[asn='%s'][vrf='']",
+		 as_str);
+
+	nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_header(struct vty *vty, struct lyd_node *dnode,
+			   bool show_defaults)
+{
+	const char *asn = yang_dnode_get_string(dnode, "./asn");
+
+	vty_out(vty, "router eigrp %s\n", asn);
+}
+
+void eigrp_cli_show_end_header(struct vty *vty, struct lyd_node *dnode)
+{
+	vty_out(vty, "!\n");
+}
+
+/*
+ * XPath: /frr-eigrpd:eigrpd/instance/router-id
+ */
+DEFPY(
+	eigrp_router_id,
+	eigrp_router_id_cmd,
+	"eigrp router-id A.B.C.D$addr",
+	EIGRP_STR
+	"Router ID for this EIGRP process\n"
+	"EIGRP Router-ID in IP address format\n")
+{
+	nb_cli_enqueue_change(vty, "./router-id", NB_OP_MODIFY, addr_str);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(
+	no_eigrp_router_id,
+	no_eigrp_router_id_cmd,
+	"no eigrp router-id [A.B.C.D]",
+	NO_STR
+	EIGRP_STR
+	"Router ID for this EIGRP process\n"
+	"EIGRP Router-ID in IP address format\n")
+{
+	nb_cli_enqueue_change(vty, "./router-id", NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_router_id(struct vty *vty, struct lyd_node *dnode,
+			      bool show_defaults)
+{
+	const char *router_id = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " eigrp router-id %s\n", router_id);
+}
+
+/*
+ * XPath: /frr-eigrpd:eigrpd/instance/passive-interface
+ */
+DEFPY(
+	eigrp_passive_interface,
+	eigrp_passive_interface_cmd,
+	"[no] passive-interface IFNAME",
+	NO_STR
+	"Suppress routing updates on an interface\n"
+	"Interface to suppress on\n")
+{
+	if (no)
+		nb_cli_enqueue_change(vty, "./passive-interface",
+				      NB_OP_DESTROY, ifname);
+	else
+		nb_cli_enqueue_change(vty, "./passive-interface",
+				      NB_OP_CREATE, ifname);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_passive_interface(struct vty *vty, struct lyd_node *dnode,
+				      bool show_defaults)
+{
+	const char *ifname = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " passive-interface %s\n", ifname);
+}
+
+/*
+ * XPath: /frr-eigrpd:eigrpd/instance/active-time
+ */
+DEFPY(
+	eigrp_timers_active,
+	eigrp_timers_active_cmd,
+	"timers active-time <(1-65535)$timer|disabled$disabled>",
+	"Adjust routing timers\n"
+	"Time limit for active state\n"
+	"Active state time limit in seconds\n"
+	"Disable time limit for active state\n")
+{
+	if (disabled)
+		nb_cli_enqueue_change(vty, "./active-time", NB_OP_MODIFY, "0");
+	else
+		nb_cli_enqueue_change(vty, "./active-time",
+				      NB_OP_MODIFY, timer_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(
+	no_eigrp_timers_active,
+	no_eigrp_timers_active_cmd,
+	"no timers active-time [<(1-65535)|disabled>]",
+	NO_STR
+	"Adjust routing timers\n"
+	"Time limit for active state\n"
+	"Active state time limit in seconds\n"
+	"Disable time limit for active state\n")
+{
+	nb_cli_enqueue_change(vty, "./active-time", NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_active_time(struct vty *vty, struct lyd_node *dnode,
+				bool show_defaults)
+{
+	const char *timer = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " timers active-time %s\n", timer);
+}
+
+/*
+ * XPath: /frr-eigrpd:eigrpd/instance/variance
+ */
+DEFPY(
+	eigrp_variance,
+	eigrp_variance_cmd,
+	"variance (1-128)$variance",
+	"Control load balancing variance\n"
+	"Metric variance multiplier\n")
+{
+	nb_cli_enqueue_change(vty, "./variance", NB_OP_MODIFY, variance_str);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(
+	no_eigrp_variance,
+	no_eigrp_variance_cmd,
+	"no variance [(1-128)]",
+	NO_STR
+	"Control load balancing variance\n"
+	"Metric variance multiplier\n")
+{
+	nb_cli_enqueue_change(vty, "./variance", NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_variance(struct vty *vty, struct lyd_node *dnode,
+			     bool show_defaults)
+{
+	const char *variance = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " variance %s\n", variance);
+}
+
+/*
+ * XPath: /frr-eigrpd:eigrpd/instance/maximum-paths
+ */
+DEFPY(
+	eigrp_maximum_paths,
+	eigrp_maximum_paths_cmd,
+	"maximum-paths (1-32)$maximum_paths",
+	"Forward packets over multiple paths\n"
+	"Number of paths\n")
+{
+	nb_cli_enqueue_change(vty, "./maximum-paths", NB_OP_MODIFY,
+			      maximum_paths_str);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(
+	no_eigrp_maximum_paths,
+	no_eigrp_maximum_paths_cmd,
+	"no maximum-paths [(1-32)]",
+	NO_STR
+	"Forward packets over multiple paths\n"
+	"Number of paths\n")
+{
+	nb_cli_enqueue_change(vty, "./maximum-paths", NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_maximum_paths(struct vty *vty, struct lyd_node *dnode,
+				  bool show_defaults)
+{
+	const char *maximum_paths = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " maximum-paths %s\n", maximum_paths);
+}
+
+/*
+ * XPath: /frr-eigrpd:eigrpd/instance/metric-weights/K1
+ * XPath: /frr-eigrpd:eigrpd/instance/metric-weights/K2
+ * XPath: /frr-eigrpd:eigrpd/instance/metric-weights/K3
+ * XPath: /frr-eigrpd:eigrpd/instance/metric-weights/K4
+ * XPath: /frr-eigrpd:eigrpd/instance/metric-weights/K5
+ * XPath: /frr-eigrpd:eigrpd/instance/metric-weights/K6
+ */
+DEFPY(
+	eigrp_metric_weights,
+	eigrp_metric_weights_cmd,
+	"metric weights (0-255)$k1 (0-255)$k2 (0-255)$k3 (0-255)$k4 (0-255)$k5 [(0-255)$k6]",
+	"Modify metrics and parameters for advertisement\n"
+	"Modify metric coefficients\n"
+	"K1\n"
+	"K2\n"
+	"K3\n"
+	"K4\n"
+	"K5\n"
+	"K6\n")
+{
+	nb_cli_enqueue_change(vty, "./metric-weights/K1", NB_OP_MODIFY, k1_str);
+	nb_cli_enqueue_change(vty, "./metric-weights/K2", NB_OP_MODIFY, k2_str);
+	nb_cli_enqueue_change(vty, "./metric-weights/K3", NB_OP_MODIFY, k3_str);
+	nb_cli_enqueue_change(vty, "./metric-weights/K4", NB_OP_MODIFY, k4_str);
+	nb_cli_enqueue_change(vty, "./metric-weights/K5", NB_OP_MODIFY, k5_str);
+	if (k6)
+		nb_cli_enqueue_change(vty, "./metric-weights/K6",
+				      NB_OP_MODIFY, k6_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(
+	no_eigrp_metric_weights,
+	no_eigrp_metric_weights_cmd,
+	"no metric weights [(0-255) (0-255) (0-255) (0-255) (0-255) (0-255)]",
+	NO_STR
+	"Modify metrics and parameters for advertisement\n"
+	"Modify metric coefficients\n"
+	"K1\n"
+	"K2\n"
+	"K3\n"
+	"K4\n"
+	"K5\n"
+	"K6\n")
+{
+	nb_cli_enqueue_change(vty, "./metric-weights/K1", NB_OP_DESTROY, NULL);
+	nb_cli_enqueue_change(vty, "./metric-weights/K2", NB_OP_DESTROY, NULL);
+	nb_cli_enqueue_change(vty, "./metric-weights/K3", NB_OP_DESTROY, NULL);
+	nb_cli_enqueue_change(vty, "./metric-weights/K4", NB_OP_DESTROY, NULL);
+	nb_cli_enqueue_change(vty, "./metric-weights/K5", NB_OP_DESTROY, NULL);
+	nb_cli_enqueue_change(vty, "./metric-weights/K6", NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_metrics(struct vty *vty, struct lyd_node *dnode,
+			    bool show_defaults)
+{
+	const char *k1, *k2, *k3, *k4, *k5, *k6;
+
+	k1 = yang_dnode_exists(dnode, "./K1") ?
+		yang_dnode_get_string(dnode, "./K1") : "0";
+	k2 = yang_dnode_exists(dnode, "./K2") ?
+		yang_dnode_get_string(dnode, "./K2") : "0";
+	k3 = yang_dnode_exists(dnode, "./K3") ?
+		yang_dnode_get_string(dnode, "./K3") : "0";
+	k4 = yang_dnode_exists(dnode, "./K4") ?
+		yang_dnode_get_string(dnode, "./K4") : "0";
+	k5 = yang_dnode_exists(dnode, "./K5") ?
+		yang_dnode_get_string(dnode, "./K5") : "0";
+	k6 = yang_dnode_exists(dnode, "./K6") ?
+		yang_dnode_get_string(dnode, "./K6") : "0";
+
+	vty_out(vty, " metric weights %s %s %s %s %s",
+		k1, k2, k3, k4, k5);
+	if (k6)
+		vty_out(vty, " %s", k6);
+	vty_out(vty, "\n");
+}
+
+/*
+ * XPath: /frr-eigrpd:eigrpd/instance/network
+ */
+DEFPY(
+	eigrp_network,
+	eigrp_network_cmd,
+	"[no] network A.B.C.D/M$prefix",
+	NO_STR
+	"Enable routing on an IP network\n"
+	"EIGRP network prefix\n")
+{
+	if (no)
+		nb_cli_enqueue_change(vty, "./network", NB_OP_DESTROY,
+				      prefix_str);
+	else
+		nb_cli_enqueue_change(vty, "./network", NB_OP_CREATE,
+				      prefix_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_network(struct vty *vty, struct lyd_node *dnode,
+			    bool show_defaults)
+{
+	const char *prefix = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " network %s\n", prefix);
+}
+
+/*
+ * XPath: /frr-eigrpd:eigrpd/instance/neighbor
+ */
+DEFPY(
+	eigrp_neighbor,
+	eigrp_neighbor_cmd,
+	"[no] neighbor A.B.C.D$addr",
+	NO_STR
+	"Specify a neighbor router\n"
+	"Neighbor address\n")
+{
+	if (no)
+		nb_cli_enqueue_change(vty, "./neighbor", NB_OP_DESTROY,
+				      addr_str);
+	else
+		nb_cli_enqueue_change(vty, "./neighbor", NB_OP_CREATE,
+				      addr_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_neighbor(struct vty *vty, struct lyd_node *dnode,
+			    bool show_defaults)
+{
+	const char *prefix = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " neighbor %s\n", prefix);
+}
+
+/*
+ * XPath: /frr-eigrpd:eigrpd/instance/redistribute
+ * XPath: /frr-eigrpd:eigrpd/instance/redistribute/route-map
+ * XPath: /frr-eigrpd:eigrpd/instance/redistribute/metrics/bandwidth
+ * XPath: /frr-eigrpd:eigrpd/instance/redistribute/metrics/delay
+ * XPath: /frr-eigrpd:eigrpd/instance/redistribute/metrics/reliability
+ * XPath: /frr-eigrpd:eigrpd/instance/redistribute/metrics/load
+ * XPath: /frr-eigrpd:eigrpd/instance/redistribute/metrics/mtu
+ */
+DEFPY(
+	eigrp_redistribute_source_metric,
+	eigrp_redistribute_source_metric_cmd,
+	"[no] redistribute " FRR_REDIST_STR_EIGRPD
+	"$proto [metric (1-4294967295)$bw (0-4294967295)$delay (0-255)$rlbt (1-255)$load (1-65535)$mtu]",
+	NO_STR
+	REDIST_STR
+	FRR_REDIST_HELP_STR_EIGRPD
+	"Metric for redistributed routes\n"
+	"Bandwidth metric in Kbits per second\n"
+	"EIGRP delay metric, in 10 microsecond units\n"
+	"EIGRP reliability metric where 255 is 100% reliable2 ?\n"
+	"EIGRP Effective bandwidth metric (Loading) where 255 is 100% loaded\n"
+	"EIGRP MTU of the path\n")
+{
+	char xpath[XPATH_MAXLEN], xpath_metric[XPATH_MAXLEN + 64];
+
+	snprintf(xpath, sizeof(xpath), "./redistribute[protocol='%s']", proto);
+
+	if (no) {
+		nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, NULL);
+		return nb_cli_apply_changes(vty, NULL);
+	}
+
+	nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
+	if (bw == 0 || delay == 0 || rlbt == 0 || load == 0 || mtu == 0)
+		return nb_cli_apply_changes(vty, NULL);
+
+	snprintf(xpath_metric, sizeof(xpath_metric), "%s/metrics/bandwidth",
+		 xpath);
+	nb_cli_enqueue_change(vty, xpath_metric, NB_OP_MODIFY, bw_str);
+	snprintf(xpath_metric, sizeof(xpath_metric), "%s/metrics/delay", xpath);
+	nb_cli_enqueue_change(vty, xpath_metric, NB_OP_MODIFY, delay_str);
+	snprintf(xpath_metric, sizeof(xpath_metric), "%s/metrics/reliability",
+		 xpath);
+	nb_cli_enqueue_change(vty, xpath_metric, NB_OP_MODIFY, rlbt_str);
+	snprintf(xpath_metric, sizeof(xpath_metric), "%s/metrics/load", xpath);
+	nb_cli_enqueue_change(vty, xpath_metric, NB_OP_MODIFY, load_str);
+	snprintf(xpath_metric, sizeof(xpath_metric), "%s/metrics/mtu", xpath);
+	nb_cli_enqueue_change(vty, xpath_metric, NB_OP_MODIFY, mtu_str);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_redistribute(struct vty *vty, struct lyd_node *dnode,
+				 bool show_defaults)
+{
+	const char *proto = yang_dnode_get_string(dnode, "./protocol");
+	const char *bw, *delay, *load, *mtu, *rlbt;
+
+	bw = yang_dnode_exists(dnode, "./metrics/bandwidth") ?
+		yang_dnode_get_string(dnode, "./metrics/bandwidth") : NULL;
+	delay = yang_dnode_exists(dnode, "./metrics/delay") ?
+		yang_dnode_get_string(dnode, "./metrics/delay") : NULL;
+	rlbt = yang_dnode_exists(dnode, "./metrics/reliability") ?
+		yang_dnode_get_string(dnode, "./metrics/reliability") : NULL;
+	load = yang_dnode_exists(dnode, "./metrics/load") ?
+		yang_dnode_get_string(dnode, "./metrics/load") : NULL;
+	mtu = yang_dnode_exists(dnode, "./metrics/mtu") ?
+		yang_dnode_get_string(dnode, "./metrics/mtu") : NULL;
+
+	vty_out(vty, " redistribute %s", proto);
+	if (bw || rlbt || delay || load || mtu)
+		vty_out(vty, " metric %s %s %s %s %s", bw, delay, rlbt, load,
+			mtu);
+	vty_out(vty, "\n");
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-eigrpd:eigrp/delay
+ */
+DEFPY(
+	eigrp_if_delay,
+	eigrp_if_delay_cmd,
+	"delay (1-16777215)$delay",
+	"Specify interface throughput delay\n"
+	"Throughput delay (tens of microseconds)\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-eigrpd:eigrp/delay",
+			      NB_OP_MODIFY, delay_str);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(
+	no_eigrp_if_delay,
+	no_eigrp_if_delay_cmd,
+	"no delay [(1-16777215)]",
+	NO_STR
+	"Specify interface throughput delay\n"
+	"Throughput delay (tens of microseconds)\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-eigrpd:eigrp/delay",
+			      NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_delay(struct vty *vty, struct lyd_node *dnode,
+			  bool show_defaults)
+{
+	const char *delay = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " delay %s\n", delay);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-eigrpd:eigrp/bandwidth
+ */
+DEFPY(
+	eigrp_if_bandwidth,
+	eigrp_if_bandwidth_cmd,
+	"eigrp bandwidth (1-10000000)$bw",
+	EIGRP_STR
+	"Set bandwidth informational parameter\n"
+	"Bandwidth in kilobits\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-eigrpd:eigrp/bandwidth",
+			      NB_OP_MODIFY, bw_str);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(
+	no_eigrp_if_bandwidth,
+	no_eigrp_if_bandwidth_cmd,
+	"no eigrp bandwidth [(1-10000000)]",
+	NO_STR
+	EIGRP_STR
+	"Set bandwidth informational parameter\n"
+	"Bandwidth in kilobits\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-eigrpd:eigrp/bandwidth",
+			      NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_bandwidth(struct vty *vty, struct lyd_node *dnode,
+			      bool show_defaults)
+{
+	const char *bandwidth = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " eigrp bandwidth %s\n", bandwidth);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-eigrpd:eigrp/hello-interval
+ */
+DEFPY(
+	eigrp_if_ip_hellointerval,
+	eigrp_if_ip_hellointerval_cmd,
+	"ip hello-interval eigrp (1-65535)$hello",
+	"Interface Internet Protocol config commands\n"
+	"Configures EIGRP hello interval\n"
+	EIGRP_STR
+	"Seconds between hello transmissions\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-eigrpd:eigrp/hello-interval",
+			      NB_OP_MODIFY, hello_str);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(
+	no_eigrp_if_ip_hellointerval,
+	no_eigrp_if_ip_hellointerval_cmd,
+	"no ip hello-interval eigrp [(1-65535)]",
+	NO_STR
+	"Interface Internet Protocol config commands\n"
+	"Configures EIGRP hello interval\n"
+	EIGRP_STR
+	"Seconds between hello transmissions\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-eigrpd:eigrp/hello-interval",
+			      NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+
+void eigrp_cli_show_hello_interval(struct vty *vty, struct lyd_node *dnode,
+				   bool show_defaults)
+{
+	const char *hello = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " ip hello-interval eigrp %s\n", hello);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-eigrpd:eigrp/hold-time
+ */
+DEFPY(
+	eigrp_if_ip_holdinterval,
+	eigrp_if_ip_holdinterval_cmd,
+	"ip hold-time eigrp (1-65535)$hold",
+	"Interface Internet Protocol config commands\n"
+	"Configures EIGRP IPv4 hold time\n"
+	EIGRP_STR
+	"Seconds before neighbor is considered down\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-eigrpd:eigrp/hold-time",
+			      NB_OP_MODIFY, hold_str);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(
+	no_eigrp_if_ip_holdinterval,
+	no_eigrp_if_ip_holdinterval_cmd,
+	"no ip hold-time eigrp [(1-65535)]",
+	NO_STR
+	"Interface Internet Protocol config commands\n"
+	"Configures EIGRP IPv4 hold time\n"
+	EIGRP_STR
+	"Seconds before neighbor is considered down\n")
+{
+	nb_cli_enqueue_change(vty, "./frr-eigrpd:eigrp/hold-time",
+			      NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_hold_time(struct vty *vty, struct lyd_node *dnode,
+			      bool show_defaults)
+{
+	const char *holdtime = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " ip hold-time eigrp %s\n", holdtime);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-eigrpd:eigrp/split-horizon
+ */
+/* NOT implemented. */
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-eigrpd:eigrp/instance
+ * XPath: /frr-interface:lib/interface/frr-eigrpd:eigrp/instance/summarize-addresses
+ */
+DEFPY(
+	eigrp_ip_summary_address,
+	eigrp_ip_summary_address_cmd,
+	"ip summary-address eigrp (1-65535)$as A.B.C.D/M$prefix",
+	"Interface Internet Protocol config commands\n"
+	"Perform address summarization\n"
+	EIGRP_STR
+	AS_STR
+	"Summary <network>/<length>, e.g. 192.168.0.0/16\n")
+{
+	char xpath[XPATH_MAXLEN], xpath_auth[XPATH_MAXLEN + 64];
+
+	snprintf(xpath, sizeof(xpath), "./frr-eigrpd:eigrp/instance[asn='%s']",
+		 as_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
+
+	snprintf(xpath_auth, sizeof(xpath_auth), "%s/summarize-address", xpath);
+	nb_cli_enqueue_change(vty, xpath_auth, NB_OP_CREATE, prefix_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(
+	no_eigrp_ip_summary_address,
+	no_eigrp_ip_summary_address_cmd,
+	"no ip summary-address eigrp (1-65535)$as A.B.C.D/M$prefix",
+	NO_STR
+	"Interface Internet Protocol config commands\n"
+	"Perform address summarization\n"
+	EIGRP_STR
+	AS_STR
+	"Summary <network>/<length>, e.g. 192.168.0.0/16\n")
+{
+	char xpath[XPATH_MAXLEN], xpath_auth[XPATH_MAXLEN + 64];
+
+	snprintf(xpath, sizeof(xpath), "./frr-eigrpd:eigrp/instance[asn='%s']",
+		 as_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
+
+	snprintf(xpath_auth, sizeof(xpath_auth), "%s/summarize-address", xpath);
+	nb_cli_enqueue_change(vty, xpath_auth, NB_OP_DESTROY, prefix_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_summarize_address(struct vty *vty, struct lyd_node *dnode,
+				      bool show_defaults)
+{
+	const struct eigrp_interface *eif = nb_running_get_entry(dnode, NULL,
+								 true);
+	const char *summarize_address = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " ip summary-address eigrp %d %s\n",
+		eif->eigrp->AS, summarize_address);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-eigrpd:eigrp/instance
+ * XPath: /frr-interface:lib/interface/frr-eigrpd:eigrp/instance/authentication
+ */
+DEFPY(
+	eigrp_authentication_mode,
+	eigrp_authentication_mode_cmd,
+	"ip authentication mode eigrp (1-65535)$as <md5|hmac-sha-256>$crypt",
+	"Interface Internet Protocol config commands\n"
+	"Authentication subcommands\n"
+	"Mode\n"
+	EIGRP_STR
+	AS_STR
+	"Keyed message digest\n"
+	"HMAC SHA256 algorithm \n")
+{
+	char xpath[XPATH_MAXLEN], xpath_auth[XPATH_MAXLEN + 64];
+
+	snprintf(xpath, sizeof(xpath), "./frr-eigrpd:eigrp/instance[asn='%s']",
+		 as_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
+
+	snprintf(xpath_auth, sizeof(xpath_auth), "%s/authentication", xpath);
+	nb_cli_enqueue_change(vty, xpath_auth, NB_OP_MODIFY, crypt);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(
+	no_eigrp_authentication_mode,
+	no_eigrp_authentication_mode_cmd,
+	"no ip authentication mode eigrp (1-65535)$as [<md5|hmac-sha-256>]",
+	NO_STR
+	"Interface Internet Protocol config commands\n"
+	"Authentication subcommands\n"
+	"Mode\n"
+	EIGRP_STR
+	AS_STR
+	"Keyed message digest\n"
+	"HMAC SHA256 algorithm \n")
+{
+	char xpath[XPATH_MAXLEN], xpath_auth[XPATH_MAXLEN + 64];
+
+	snprintf(xpath, sizeof(xpath), "./frr-eigrpd:eigrp/instance[asn='%s']",
+		 as_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
+
+	snprintf(xpath_auth, sizeof(xpath_auth), "%s/authentication", xpath);
+	nb_cli_enqueue_change(vty, xpath_auth, NB_OP_MODIFY, "none");
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_authentication(struct vty *vty, struct lyd_node *dnode,
+				   bool show_defaults)
+{
+	const struct eigrp_interface *eif = nb_running_get_entry(dnode, NULL,
+								 true);
+	const char *crypt = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " ip authentication mode eigrp %d %s\n",
+		eif->eigrp->AS, crypt);
+}
+
+/*
+ * XPath: /frr-interface:lib/interface/frr-eigrpd:eigrp/instance
+ * XPath: /frr-interface:lib/interface/frr-eigrpd:eigrp/instance/keychain
+ */
+DEFPY(
+	eigrp_authentication_keychain,
+	eigrp_authentication_keychain_cmd,
+	"ip authentication key-chain eigrp (1-65535)$as WORD$name",
+	"Interface Internet Protocol config commands\n"
+	"Authentication subcommands\n"
+	"Key-chain\n"
+	EIGRP_STR
+	AS_STR
+	"Name of key-chain\n")
+{
+	char xpath[XPATH_MAXLEN], xpath_auth[XPATH_MAXLEN + 64];
+
+	snprintf(xpath, sizeof(xpath), "./frr-eigrpd:eigrp/instance[asn='%s']",
+		 as_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
+
+	snprintf(xpath_auth, sizeof(xpath_auth), "%s/keychain", xpath);
+	nb_cli_enqueue_change(vty, xpath_auth, NB_OP_MODIFY, name);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(
+	no_eigrp_authentication_keychain,
+	no_eigrp_authentication_keychain_cmd,
+	"no ip authentication key-chain eigrp (1-65535)$as [WORD]",
+	NO_STR
+	"Interface Internet Protocol config commands\n"
+	"Authentication subcommands\n"
+	"Key-chain\n"
+	EIGRP_STR
+	AS_STR
+	"Name of key-chain\n")
+{
+	char xpath[XPATH_MAXLEN], xpath_auth[XPATH_MAXLEN + 64];
+
+	snprintf(xpath, sizeof(xpath), "./frr-eigrpd:eigrp/instance[asn='%s']",
+		 as_str);
+	snprintf(xpath_auth, sizeof(xpath_auth), "%s/keychain", xpath);
+	nb_cli_enqueue_change(vty, xpath_auth, NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void eigrp_cli_show_keychain(struct vty *vty, struct lyd_node *dnode,
+			     bool show_defaults)
+{
+	const struct eigrp_interface *eif = nb_running_get_entry(dnode, NULL,
+								 true);
+	const char *keychain = yang_dnode_get_string(dnode, NULL);
+
+	vty_out(vty, " ip authentication key-chain eigrp %d %s\n",
+		eif->eigrp->AS, keychain);
+}
+
+
+/*
+ * CLI installation procedures.
+ */
+static struct cmd_node eigrp_node = {EIGRP_NODE, "%s(config-router)# ", 1};
+
+static int eigrp_config_write(struct vty *vty)
+{
+	struct lyd_node *dnode;
+	int written = 0;
+
+	dnode = yang_dnode_get(running_config->dnode, "/frr-eigrpd:eigrpd");
+	if (dnode) {
+		nb_cli_show_dnode_cmds(vty, dnode, false);
+		written = 1;
+	}
+
+	return written;
+}
+
+static struct cmd_node eigrp_interface_node = {INTERFACE_NODE,
+					       "%s(config-if)# ", 1};
+
+
+static int eigrp_write_interface(struct vty *vty)
+{
+	struct lyd_node *dnode;
+	struct interface *ifp;
+	struct vrf *vrf;
+	int written = 0;
+
+	RB_FOREACH(vrf, vrf_name_head, &vrfs_by_name) {
+		FOR_ALL_INTERFACES(vrf, ifp) {
+			dnode = yang_dnode_get(
+				running_config->dnode,
+				"/frr-interface:lib/interface[name='%s'][vrf='%s']",
+				ifp->name, vrf->name);
+			if (dnode == NULL)
+				continue;
+
+			written = 1;
+			nb_cli_show_dnode_cmds(vty, dnode, false);
+		}
+	}
+
+	return written;
+}
+
+void
+eigrp_cli_init(void)
+{
+	install_element(CONFIG_NODE, &router_eigrp_cmd);
+	install_element(CONFIG_NODE, &no_router_eigrp_cmd);
+
+	install_node(&eigrp_node, eigrp_config_write);
+	install_default(EIGRP_NODE);
+
+	install_element(EIGRP_NODE, &eigrp_router_id_cmd);
+	install_element(EIGRP_NODE, &no_eigrp_router_id_cmd);
+	install_element(EIGRP_NODE, &eigrp_passive_interface_cmd);
+	install_element(EIGRP_NODE, &eigrp_timers_active_cmd);
+	install_element(EIGRP_NODE, &no_eigrp_timers_active_cmd);
+	install_element(EIGRP_NODE, &eigrp_variance_cmd);
+	install_element(EIGRP_NODE, &no_eigrp_variance_cmd);
+	install_element(EIGRP_NODE, &eigrp_maximum_paths_cmd);
+	install_element(EIGRP_NODE, &no_eigrp_maximum_paths_cmd);
+	install_element(EIGRP_NODE, &eigrp_metric_weights_cmd);
+	install_element(EIGRP_NODE, &no_eigrp_metric_weights_cmd);
+	install_element(EIGRP_NODE, &eigrp_network_cmd);
+	install_element(EIGRP_NODE, &eigrp_neighbor_cmd);
+	install_element(EIGRP_NODE, &eigrp_redistribute_source_metric_cmd);
+
+	install_node(&eigrp_interface_node, eigrp_write_interface);
+	if_cmd_init();
+
+	install_element(INTERFACE_NODE, &eigrp_if_delay_cmd);
+	install_element(INTERFACE_NODE, &no_eigrp_if_delay_cmd);
+	install_element(INTERFACE_NODE, &eigrp_if_bandwidth_cmd);
+	install_element(INTERFACE_NODE, &no_eigrp_if_bandwidth_cmd);
+	install_element(INTERFACE_NODE, &eigrp_if_ip_hellointerval_cmd);
+	install_element(INTERFACE_NODE, &no_eigrp_if_ip_hellointerval_cmd);
+	install_element(INTERFACE_NODE, &eigrp_if_ip_holdinterval_cmd);
+	install_element(INTERFACE_NODE, &no_eigrp_if_ip_holdinterval_cmd);
+	install_element(INTERFACE_NODE, &eigrp_ip_summary_address_cmd);
+	install_element(INTERFACE_NODE, &no_eigrp_ip_summary_address_cmd);
+	install_element(INTERFACE_NODE, &eigrp_authentication_mode_cmd);
+	install_element(INTERFACE_NODE, &no_eigrp_authentication_mode_cmd);
+	install_element(INTERFACE_NODE, &eigrp_authentication_keychain_cmd);
+	install_element(INTERFACE_NODE, &no_eigrp_authentication_keychain_cmd);
+}