Adding upstream version 9.1.upstream/9.1

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

1 files changed, 1379 insertions, 0 deletions

diff --git a/pathd/path_cli.c b/pathd/path_cli.c
new file mode 100644
index 0000000..45f4ac7
--- /dev/null
+++ b/pathd/path_cli.c
@@ -0,0 +1,1379 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020  NetDEF, Inc.
+ */
+
+#include <zebra.h>
+
+#include <float.h>
+#include <math.h>
+#include <zebra.h>
+
+#include "memory.h"
+#include "log.h"
+#include "command.h"
+#include "mpls.h"
+#include "northbound_cli.h"
+#include "termtable.h"
+
+#include "pathd/pathd.h"
+#include "pathd/path_nb.h"
+#include "pathd/path_cli_clippy.c"
+#include "pathd/path_ted.h"
+
+#define XPATH_MAXATTRSIZE 64
+#define XPATH_MAXKEYSIZE 42
+#define XPATH_POLICY_BASELEN 100
+#define XPATH_POLICY_MAXLEN (XPATH_POLICY_BASELEN + XPATH_MAXATTRSIZE)
+#define XPATH_CANDIDATE_BASELEN (XPATH_POLICY_BASELEN + XPATH_MAXKEYSIZE)
+#define XPATH_CANDIDATE_MAXLEN (XPATH_CANDIDATE_BASELEN + XPATH_MAXATTRSIZE)
+
+
+static int config_write_segment_routing(struct vty *vty);
+static int segment_list_has_src_dst(
+	struct vty *vty, char *xpath, long index, const char *index_str,
+	struct in_addr adj_src_ipv4, struct in_addr adj_dst_ipv4,
+	struct in6_addr adj_src_ipv6, struct in6_addr adj_dst_ipv6,
+	const char *adj_src_ipv4_str, const char *adj_dst_ipv4_str,
+	const char *adj_src_ipv6_str, const char *adj_dst_ipv6_str);
+static int segment_list_has_prefix(
+	struct vty *vty, char *xpath, long index, const char *index_str,
+	const struct prefix_ipv4 *prefix_ipv4, const char *prefix_ipv4_str,
+	const struct prefix_ipv6 *prefix_ipv6, const char *prefix_ipv6_str,
+	const char *has_algo, long algo, const char *algo_str,
+	const char *has_iface_id, long iface_id, const char *iface_id_str);
+
+DEFINE_MTYPE_STATIC(PATHD, PATH_CLI, "Client");
+
+DEFINE_HOOK(pathd_srte_config_write, (struct vty *vty), (vty));
+
+/* Vty node structures. */
+static struct cmd_node segment_routing_node = {
+	.name = "segment-routing",
+	.node = SEGMENT_ROUTING_NODE,
+	.parent_node = CONFIG_NODE,
+	.prompt = "%s(config-sr)# ",
+	.config_write = config_write_segment_routing,
+};
+
+static struct cmd_node sr_traffic_eng_node = {
+	.name = "sr traffic-eng",
+	.node = SR_TRAFFIC_ENG_NODE,
+	.parent_node = SEGMENT_ROUTING_NODE,
+	.prompt = "%s(config-sr-te)# ",
+};
+
+static struct cmd_node srte_segment_list_node = {
+	.name = "srte segment-list",
+	.node = SR_SEGMENT_LIST_NODE,
+	.parent_node = SR_TRAFFIC_ENG_NODE,
+	.prompt = "%s(config-sr-te-segment-list)# ",
+};
+
+static struct cmd_node srte_policy_node = {
+	.name = "srte policy",
+	.node = SR_POLICY_NODE,
+	.parent_node = SR_TRAFFIC_ENG_NODE,
+	.prompt = "%s(config-sr-te-policy)# ",
+};
+
+static struct cmd_node srte_candidate_dyn_node = {
+	.name = "srte candidate-dyn",
+	.node = SR_CANDIDATE_DYN_NODE,
+	.parent_node = SR_POLICY_NODE,
+	.prompt = "%s(config-sr-te-candidate)# ",
+};
+
+
+/*
+ * Show SR-TE info
+ */
+DEFPY(show_srte_policy,
+      show_srte_policy_cmd,
+      "show sr-te policy",
+      SHOW_STR
+      "SR-TE info\n"
+      "SR-TE Policy\n")
+{
+	struct ttable *tt;
+	struct srte_policy *policy;
+	char *table;
+
+	if (RB_EMPTY(srte_policy_head, &srte_policies)) {
+		vty_out(vty, "No SR Policies to display.\n\n");
+		return CMD_SUCCESS;
+	}
+
+	/* Prepare table. */
+	tt = ttable_new(&ttable_styles[TTSTYLE_BLANK]);
+	ttable_add_row(tt, "Endpoint|Color|Name|BSID|Status");
+	tt->style.cell.rpad = 2;
+	tt->style.corner = '+';
+	ttable_restyle(tt);
+	ttable_rowseps(tt, 0, BOTTOM, true, '-');
+
+	RB_FOREACH (policy, srte_policy_head, &srte_policies) {
+		char endpoint[ENDPOINT_STR_LENGTH];
+		char binding_sid[16] = "-";
+
+		ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint));
+		if (policy->binding_sid != MPLS_LABEL_NONE)
+			snprintf(binding_sid, sizeof(binding_sid), "%u",
+				 policy->binding_sid);
+
+		ttable_add_row(tt, "%s|%u|%s|%s|%s", endpoint, policy->color,
+			       policy->name, binding_sid,
+			       policy->status == SRTE_POLICY_STATUS_UP
+				       ? "Active"
+				       : "Inactive");
+	}
+
+	/* Dump the generated table. */
+	table = ttable_dump(tt, "\n");
+	vty_out(vty, "%s\n", table);
+	XFREE(MTYPE_TMP, table);
+
+	ttable_del(tt);
+
+	return CMD_SUCCESS;
+}
+
+
+/*
+ * Show detailed SR-TE info
+ */
+DEFPY(show_srte_policy_detail,
+      show_srte_policy_detail_cmd,
+      "show sr-te policy detail",
+      SHOW_STR
+      "SR-TE info\n"
+      "SR-TE Policy\n"
+      "Show a detailed summary\n")
+{
+	struct srte_policy *policy;
+
+	if (RB_EMPTY(srte_policy_head, &srte_policies)) {
+		vty_out(vty, "No SR Policies to display.\n\n");
+		return CMD_SUCCESS;
+	}
+
+	vty_out(vty, "\n");
+	RB_FOREACH (policy, srte_policy_head, &srte_policies) {
+		struct srte_candidate *candidate;
+		char endpoint[ENDPOINT_STR_LENGTH];
+		char binding_sid[16] = "-";
+		char *segment_list_info;
+		static char undefined_info[] = "(undefined)";
+		static char created_by_pce_info[] = "(created by PCE)";
+
+
+		ipaddr2str(&policy->endpoint, endpoint, sizeof(endpoint));
+		if (policy->binding_sid != MPLS_LABEL_NONE)
+			snprintf(binding_sid, sizeof(binding_sid), "%u",
+				 policy->binding_sid);
+		vty_out(vty,
+			"Endpoint: %s  Color: %u  Name: %s  BSID: %s  Status: %s\n",
+			endpoint, policy->color, policy->name, binding_sid,
+			policy->status == SRTE_POLICY_STATUS_UP ? "Active"
+								: "Inactive");
+
+		RB_FOREACH (candidate, srte_candidate_head,
+			    &policy->candidate_paths) {
+			struct srte_segment_list *segment_list;
+
+			segment_list = candidate->lsp->segment_list;
+			if (segment_list == NULL)
+				segment_list_info = undefined_info;
+			else if (segment_list->protocol_origin
+				 == SRTE_ORIGIN_PCEP)
+				segment_list_info = created_by_pce_info;
+			else
+				segment_list_info =
+					candidate->lsp->segment_list->name;
+
+			vty_out(vty,
+				"  %s Preference: %d  Name: %s  Type: %s  Segment-List: %s  Protocol-Origin: %s\n",
+				CHECK_FLAG(candidate->flags, F_CANDIDATE_BEST)
+					? "*"
+					: " ",
+				candidate->preference, candidate->name,
+				candidate->type == SRTE_CANDIDATE_TYPE_EXPLICIT
+					? "explicit"
+					: "dynamic",
+				segment_list_info,
+				srte_origin2str(
+					candidate->lsp->protocol_origin));
+		}
+
+		vty_out(vty, "\n");
+	}
+
+	return CMD_SUCCESS;
+}
+
+DEFPY_NOSH(
+      segment_routing_list,
+      segment_routing_cmd,
+      "segment-routing",
+      "Configure segment routing\n")
+{
+	VTY_PUSH_CONTEXT_NULL(SEGMENT_ROUTING_NODE);
+	return CMD_SUCCESS;
+}
+
+DEFPY_NOSH(
+      sr_traffic_eng_list,
+      sr_traffic_eng_cmd,
+      "traffic-eng",
+      "Configure SR traffic engineering\n")
+{
+	VTY_PUSH_CONTEXT_NULL(SR_TRAFFIC_ENG_NODE);
+	return CMD_SUCCESS;
+}
+
+/*
+ * XPath: /frr-pathd:pathd/srte/segment-list
+ */
+DEFPY_NOSH(
+      srte_segment_list,
+      srte_segment_list_cmd,
+      "segment-list WORD$name",
+      "Segment List\n"
+      "Segment List Name\n")
+{
+	char xpath[XPATH_MAXLEN];
+	int ret;
+
+	snprintf(xpath, sizeof(xpath),
+		 "/frr-pathd:pathd/srte/segment-list[name='%s']", name);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
+
+	snprintf(xpath, sizeof(xpath),
+		 "/frr-pathd:pathd/srte/segment-list[name='%s']/protocol-origin",
+		 name);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY, "local");
+
+	snprintf(xpath, sizeof(xpath),
+		 "/frr-pathd:pathd/srte/segment-list[name='%s']/originator", name);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY, "config");
+
+	ret = nb_cli_apply_changes(vty, NULL);
+	if (ret == CMD_SUCCESS) {
+		snprintf(xpath, sizeof(xpath),
+			 "/frr-pathd:pathd/srte/segment-list[name='%s']", name);
+		VTY_PUSH_XPATH(SR_SEGMENT_LIST_NODE, xpath);
+	}
+
+	return ret;
+}
+
+DEFPY(srte_no_segment_list,
+      srte_no_segment_list_cmd,
+      "no segment-list WORD$name",
+      NO_STR
+      "Segment List\n"
+      "Segment List Name\n")
+{
+	char xpath[XPATH_MAXLEN];
+
+	snprintf(xpath, sizeof(xpath),
+		 "/frr-pathd:pathd/srte/segment-list[name='%s']", name);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_srte_segment_list(struct vty *vty, const struct lyd_node *dnode,
+				bool show_defaults)
+{
+	vty_out(vty, "  segment-list %s\n",
+		yang_dnode_get_string(dnode, "./name"));
+}
+
+void cli_show_srte_segment_list_end(struct vty *vty,
+				    const struct lyd_node *dnode)
+{
+	vty_out(vty, "  exit\n");
+}
+
+static int segment_list_has_src_dst(
+	struct vty *vty, char *xpath, long index, const char *index_str,
+	struct in_addr adj_src_ipv4, struct in_addr adj_dst_ipv4,
+	struct in6_addr adj_src_ipv6, struct in6_addr adj_dst_ipv6,
+	const char *adj_src_ipv4_str, const char *adj_dst_ipv4_str,
+	const char *adj_src_ipv6_str, const char *adj_dst_ipv6_str)
+{
+	const char *node_src_id;
+	uint32_t ted_sid = MPLS_LABEL_NONE;
+
+	struct ipaddr ip_src = {};
+	struct ipaddr ip_dst = {};
+	if (adj_src_ipv4_str != NULL) {
+		ip_src.ipa_type = IPADDR_V4;
+		ip_src.ip._v4_addr = adj_src_ipv4;
+		ip_dst.ipa_type = IPADDR_V4;
+		ip_dst.ip._v4_addr = adj_dst_ipv4;
+	} else if (adj_src_ipv6_str != NULL) {
+		ip_src.ipa_type = IPADDR_V6;
+		ip_src.ip._v6_addr = adj_src_ipv6;
+		ip_dst.ipa_type = IPADDR_V6;
+		ip_dst.ip._v6_addr = adj_dst_ipv6;
+	} else {
+		return CMD_ERR_NO_MATCH;
+	}
+	ted_sid = path_ted_query_type_f(&ip_src, &ip_dst);
+	if (ted_sid == MPLS_LABEL_NONE) {
+		zlog_warn(
+			"%s: [rcv ted] CLI NOT FOUND Continue query_type_f SRC (%pIA) DST (%pIA)!",
+			__func__, &ip_src, &ip_dst);
+	}
+	/* type */
+	snprintf(xpath, XPATH_MAXLEN, "./segment[index='%s']/nai/type",
+		 index_str);
+	if (adj_src_ipv4_str != NULL) {
+		nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY,
+				      "ipv4_adjacency");
+		node_src_id = adj_src_ipv4_str;
+	} else if (adj_src_ipv6_str != NULL) {
+		nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY,
+				      "ipv6_adjacency");
+		node_src_id = adj_src_ipv6_str;
+	} else {
+		/*
+		 * This is just to make the compiler happy about
+		 * node_src_id not being initialized.  This
+		 * should never happen unless we change the cli
+		 * function.
+		 */
+		assert(!"We must have a adj_src_ipv4_str or a adj_src_ipv6_str");
+	}
+
+	/* addresses */
+	snprintf(xpath, XPATH_MAXLEN, "./segment[index='%s']/nai/local-address",
+		 index_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY, node_src_id);
+	snprintf(xpath, XPATH_MAXLEN,
+		 "./segment[index='%s']/nai/remote-address", index_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY,
+			      adj_dst_ipv4_str ? adj_dst_ipv4_str
+					       : adj_dst_ipv6_str);
+	return CMD_SUCCESS;
+}
+int segment_list_has_prefix(
+	struct vty *vty, char *xpath, long index, const char *index_str,
+	const struct prefix_ipv4 *prefix_ipv4, const char *prefix_ipv4_str,
+	const struct prefix_ipv6 *prefix_ipv6, const char *prefix_ipv6_str,
+	const char *has_algo, long algo, const char *algo_str,
+	const char *has_iface_id, long iface_id, const char *iface_id_str)
+{
+	char buf_prefix[INET6_ADDRSTRLEN];
+
+	uint32_t ted_sid = MPLS_LABEL_NONE;
+	struct prefix prefix_cli = {};
+	struct ipaddr pre_ipaddr = {};
+	/* prefix with algorithm or local interface id */
+	/* Type */
+	snprintf(xpath, XPATH_MAXLEN, "./segment[index='%s']/nai/type",
+		 index_str);
+	if (has_iface_id != NULL) {
+		if (prefix_ipv4_str != NULL) {
+			nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY,
+					      "ipv4_local_iface");
+		} else if (prefix_ipv6_str != NULL) {
+			nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY,
+					      "ipv6_local_iface");
+		} else {
+			return CMD_ERR_NO_MATCH;
+		}
+	} else {
+		if (prefix_ipv4_str != NULL) {
+			nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY,
+					      "ipv4_algo");
+		} else if (prefix_ipv6_str != NULL) {
+			nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY,
+					      "ipv6_algo");
+		} else {
+			return CMD_ERR_NO_MATCH;
+		}
+	}
+	/* Prefix */
+	if (prefix_ipv4_str != NULL) {
+		if (!str2prefix(prefix_ipv4_str, &prefix_cli)) {
+			vty_out(vty, "%% Malformed prefix\n");
+			return CMD_WARNING_CONFIG_FAILED;
+		}
+		inet_ntop(AF_INET, &prefix_cli.u.prefix4, buf_prefix,
+			  sizeof(buf_prefix));
+		pre_ipaddr.ipa_type = IPADDR_V4;
+		pre_ipaddr.ip._v4_addr = prefix_cli.u.prefix4;
+	} else if (prefix_ipv6_str != NULL) {
+		if (!str2prefix(prefix_ipv6_str, &prefix_cli)) {
+			vty_out(vty, "%% Malformed prefix\n");
+			return CMD_WARNING_CONFIG_FAILED;
+		}
+		inet_ntop(AF_INET6, &prefix_cli.u.prefix6, buf_prefix,
+			  sizeof(buf_prefix));
+		pre_ipaddr.ipa_type = IPADDR_V6;
+		pre_ipaddr.ip._v6_addr = prefix_cli.u.prefix6;
+	}
+	snprintf(xpath, XPATH_MAXLEN, "./segment[index='%s']/nai/local-address",
+		 index_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY, buf_prefix);
+	snprintf(xpath, XPATH_MAXLEN,
+		 "./segment[index='%s']/nai/local-prefix-len", index_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY,
+			      prefix_ipv4_str
+				      ? strchr(prefix_ipv4_str, '/') + 1
+				      : strchr(prefix_ipv6_str, '/') + 1);
+	/* Alg / Iface */
+	if (has_algo != NULL) {
+		snprintf(xpath, XPATH_MAXLEN,
+			 "./segment[index='%s']/nai/algorithm", index_str);
+		nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY, algo_str);
+	} else {
+		if (has_iface_id != NULL) {
+			snprintf(xpath, XPATH_MAXLEN,
+				 "./segment[index='%s']/nai/local-interface",
+				 index_str);
+			nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY,
+					      iface_id_str);
+		}
+	}
+	if (has_algo != NULL) {
+		ted_sid = path_ted_query_type_c(&prefix_cli, algo);
+		if (ted_sid == MPLS_LABEL_NONE) {
+			zlog_err(
+				"%s: [rcv ted] CLI NOT FOUND Continue query_type_c PREFIX (%pIA/%d) ALGO (%ld) sid:(%d)!",
+				__func__, &pre_ipaddr, prefix_cli.prefixlen,
+				algo, ted_sid);
+		}
+	}
+	if (has_iface_id != NULL) {
+		ted_sid = path_ted_query_type_e(&prefix_cli, iface_id);
+		if (ted_sid == MPLS_LABEL_NONE) {
+			zlog_err(
+				"%s: [rcv ted] CLI NOT FOUND Continue query_type_e PREFIX (%pIA/%d) IFACE (%ld) sid:(%d)!",
+				__func__, &pre_ipaddr, prefix_cli.prefixlen,
+				iface_id, ted_sid);
+		}
+	}
+	return CMD_SUCCESS;
+}
+/*
+ * XPath: /frr-pathd:pathd/srte/segment-list/segment
+ */
+/* clang-format off */
+DEFPY(srte_segment_list_segment, srte_segment_list_segment_cmd,
+      "index (0-4294967295)$index <[mpls$has_mpls_label label (16-1048575)$label] "
+      "|"
+      "[nai$has_nai <"
+      "prefix <A.B.C.D/M$prefix_ipv4|X:X::X:X/M$prefix_ipv6>"
+      "<algorithm$has_algo (0-1)$algo| iface$has_iface_id (0-4294967295)$iface_id>"
+      "| adjacency$has_adj "
+      "<A.B.C.D$adj_src_ipv4 A.B.C.D$adj_dst_ipv4|X:X::X:X$adj_src_ipv6 X:X::X:X$adj_dst_ipv6>"
+      ">]"
+      ">",
+      "Index\n"
+      "Index Value\n"
+      "MPLS or IP Label\n"
+      "Label\n"
+      "Label Value\n"
+      "Segment NAI\n"
+      "NAI prefix identifier\n"
+      "NAI IPv4 prefix identifier\n"
+      "NAI IPv6 prefix identifier\n"
+      "IGP Algorithm\n"
+      "Algorithm Value SPF or Strict-SPF\n"
+      "Interface Id\n"
+      "Interface Value\n"
+      "ADJ identifier\n"
+      "ADJ IPv4 src identifier\n"
+      "ADJ IPv4 dst identifier\n"
+      "ADJ IPv6 src identifier\n"
+      "ADJ IPv6 dst identifier\n")
+/* clang-format on */
+{
+	char xpath[XPATH_MAXLEN];
+	int status = CMD_SUCCESS;
+
+
+	snprintf(xpath, sizeof(xpath), "./segment[index='%s']", index_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
+
+	if (has_mpls_label != NULL) {
+		snprintf(xpath, sizeof(xpath),
+			 "./segment[index='%s']/sid-value", index_str);
+		nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY, label_str);
+		return nb_cli_apply_changes(vty, NULL);
+	}
+
+	if (has_adj != NULL) {
+		status = segment_list_has_src_dst(vty, xpath, index, index_str,
+					 adj_src_ipv4, adj_dst_ipv4,
+					 adj_src_ipv6, adj_dst_ipv6,
+					 adj_src_ipv4_str, adj_dst_ipv4_str,
+					 adj_src_ipv6_str, adj_dst_ipv6_str);
+		if (status != CMD_SUCCESS)
+			return status;
+	} else {
+		status = segment_list_has_prefix(
+			vty, xpath, index, index_str, prefix_ipv4,
+			prefix_ipv4_str, prefix_ipv6, prefix_ipv6_str, has_algo,
+			algo, algo_str, has_iface_id, iface_id, iface_id_str);
+		if (status != CMD_SUCCESS)
+			return status;
+	}
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(srte_segment_list_no_segment,
+      srte_segment_list_no_segment_cmd,
+      "no index (0-4294967295)$index",
+      NO_STR
+      "Index\n"
+      "Index Value\n")
+{
+	char xpath[XPATH_MAXLEN];
+
+	snprintf(xpath, sizeof(xpath), "./segment[index='%s']", index_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_srte_segment_list_segment(struct vty *vty,
+					const struct lyd_node *dnode,
+					bool show_defaults)
+{
+	vty_out(vty, "   index %s", yang_dnode_get_string(dnode, "./index"));
+	if (yang_dnode_exists(dnode, "./sid-value")) {
+		vty_out(vty, " mpls label %s",
+			yang_dnode_get_string(dnode, "./sid-value"));
+	}
+	if (yang_dnode_exists(dnode, "./nai")) {
+		struct ipaddr addr;
+		struct ipaddr addr_rmt;
+
+		switch (yang_dnode_get_enum(dnode, "./nai/type")) {
+		case SRTE_SEGMENT_NAI_TYPE_IPV4_NODE:
+		case SRTE_SEGMENT_NAI_TYPE_IPV4_LOCAL_IFACE:
+		case SRTE_SEGMENT_NAI_TYPE_IPV4_ALGORITHM:
+			yang_dnode_get_ip(&addr, dnode, "./nai/local-address");
+			vty_out(vty, " nai prefix %pI4", &addr.ipaddr_v4);
+			break;
+		case SRTE_SEGMENT_NAI_TYPE_IPV6_NODE:
+		case SRTE_SEGMENT_NAI_TYPE_IPV6_LOCAL_IFACE:
+		case SRTE_SEGMENT_NAI_TYPE_IPV6_ALGORITHM:
+			yang_dnode_get_ip(&addr, dnode, "./nai/local-address");
+			vty_out(vty, " nai prefix %pI6", &addr.ipaddr_v6);
+			break;
+		case SRTE_SEGMENT_NAI_TYPE_IPV4_ADJACENCY:
+			yang_dnode_get_ip(&addr, dnode, "./nai/local-address");
+			yang_dnode_get_ip(&addr_rmt, dnode,
+					  "./nai/remote-address");
+			vty_out(vty, " nai adjacency %pI4", &addr.ipaddr_v4);
+			vty_out(vty, " %pI4", &addr_rmt.ipaddr_v4);
+			break;
+		case SRTE_SEGMENT_NAI_TYPE_IPV6_ADJACENCY:
+			yang_dnode_get_ip(&addr, dnode, "./nai/local-address");
+			yang_dnode_get_ip(&addr_rmt, dnode,
+					  "./nai/remote-address");
+			vty_out(vty, " nai adjacency %pI6", &addr.ipaddr_v6);
+			vty_out(vty, " %pI6", &addr_rmt.ipaddr_v6);
+			break;
+		default:
+			break;
+		}
+		if (yang_dnode_exists(dnode, "./nai/local-prefix-len")) {
+			vty_out(vty, "/%s",
+				yang_dnode_get_string(
+					dnode, "./nai/local-prefix-len"));
+		}
+		if (yang_dnode_exists(dnode, "./nai/local-interface")) {
+			vty_out(vty, " iface %s",
+				yang_dnode_get_string(dnode,
+						      "./nai/local-interface"));
+		}
+		if (yang_dnode_exists(dnode, "./nai/algorithm")) {
+			vty_out(vty, " algorithm %s",
+				yang_dnode_get_string(dnode,
+						      "./nai/algorithm"));
+		}
+	}
+	vty_out(vty, "\n");
+}
+
+/*
+ * XPath: /frr-pathd:pathd/policy
+ */
+DEFPY_NOSH(
+	srte_policy,
+	srte_policy_cmd,
+	"policy color (0-4294967295)$num endpoint <A.B.C.D|X:X::X:X>$endpoint",
+	"Segment Routing Policy\n"
+	"SR Policy color\n"
+	"SR Policy color value\n"
+	"SR Policy endpoint\n"
+	"SR Policy endpoint IPv4 address\n"
+	"SR Policy endpoint IPv6 address\n")
+{
+	char xpath[XPATH_POLICY_BASELEN];
+	int ret;
+
+	snprintf(xpath, sizeof(xpath),
+		 "/frr-pathd:pathd/srte/policy[color='%s'][endpoint='%s']",
+		 num_str, endpoint_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
+
+	ret = nb_cli_apply_changes(vty, NULL);
+	if (ret == CMD_SUCCESS)
+		VTY_PUSH_XPATH(SR_POLICY_NODE, xpath);
+
+	return ret;
+}
+
+DEFPY(srte_no_policy,
+      srte_no_policy_cmd,
+      "no policy color (0-4294967295)$num endpoint <A.B.C.D|X:X::X:X>$endpoint",
+      NO_STR
+      "Segment Routing Policy\n"
+      "SR Policy color\n"
+      "SR Policy color value\n"
+      "SR Policy endpoint\n"
+      "SR Policy endpoint IPv4 address\n"
+      "SR Policy endpoint IPv6 address\n")
+{
+	char xpath[XPATH_POLICY_BASELEN];
+
+	snprintf(xpath, sizeof(xpath),
+		 "/frr-pathd:pathd/srte/policy[color='%s'][endpoint='%s']",
+		 num_str, endpoint_str);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_srte_policy(struct vty *vty, const struct lyd_node *dnode,
+			  bool show_defaults)
+{
+	vty_out(vty, "  policy color %s endpoint %s\n",
+		yang_dnode_get_string(dnode, "./color"),
+		yang_dnode_get_string(dnode, "./endpoint"));
+}
+
+void cli_show_srte_policy_end(struct vty *vty, const struct lyd_node *dnode)
+{
+	vty_out(vty, "  exit\n");
+}
+
+/*
+ * XPath: /frr-pathd:pathd/srte/policy/name
+ */
+DEFPY(srte_policy_name,
+      srte_policy_name_cmd,
+      "name WORD$name",
+      "Segment Routing Policy name\n"
+      "SR Policy name value\n")
+{
+	nb_cli_enqueue_change(vty, "./name", NB_OP_CREATE, name);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(srte_policy_no_name,
+      srte_policy_no_name_cmd,
+      "no name [WORD]",
+      NO_STR
+      "Segment Routing Policy name\n"
+      "SR Policy name value\n")
+{
+	nb_cli_enqueue_change(vty, "./name", NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+
+void cli_show_srte_policy_name(struct vty *vty, const struct lyd_node *dnode,
+			       bool show_defaults)
+{
+	vty_out(vty, "   name %s\n", yang_dnode_get_string(dnode, NULL));
+}
+
+/*
+ * XPath: /frr-pathd:pathd/srte/policy/binding-sid
+ */
+DEFPY(srte_policy_binding_sid,
+      srte_policy_binding_sid_cmd,
+      "binding-sid (16-1048575)$label",
+      "Segment Routing Policy Binding-SID\n"
+      "SR Policy Binding-SID label\n")
+{
+	nb_cli_enqueue_change(vty, "./binding-sid", NB_OP_CREATE, label_str);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(srte_policy_no_binding_sid,
+      srte_policy_no_binding_sid_cmd,
+      "no binding-sid [(16-1048575)]",
+      NO_STR
+      "Segment Routing Policy Binding-SID\n"
+      "SR Policy Binding-SID label\n")
+{
+	nb_cli_enqueue_change(vty, "./binding-sid", NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+void cli_show_srte_policy_binding_sid(struct vty *vty,
+				      const struct lyd_node *dnode,
+				      bool show_defaults)
+{
+	vty_out(vty, "   binding-sid %s\n", yang_dnode_get_string(dnode, NULL));
+}
+
+/*
+ * XPath: /frr-pathd:pathd/srte/policy/candidate-path
+ */
+DEFPY(srte_policy_candidate_exp,
+      srte_policy_candidate_exp_cmd,
+      "candidate-path preference (0-4294967295)$preference name WORD$name \
+	 explicit segment-list WORD$list_name",
+      "Segment Routing Policy Candidate Path\n"
+      "Segment Routing Policy Candidate Path Preference\n"
+      "Administrative Preference\n"
+      "Segment Routing Policy Candidate Path Name\n"
+      "Symbolic Name\n"
+      "Explicit Path\n"
+      "List of SIDs\n"
+      "Name of the Segment List\n")
+{
+	nb_cli_enqueue_change(vty, ".", NB_OP_CREATE, preference_str);
+	nb_cli_enqueue_change(vty, "./name", NB_OP_MODIFY, name);
+	nb_cli_enqueue_change(vty, "./protocol-origin", NB_OP_MODIFY, "local");
+	nb_cli_enqueue_change(vty, "./originator", NB_OP_MODIFY, "config");
+	nb_cli_enqueue_change(vty, "./type", NB_OP_MODIFY, "explicit");
+	nb_cli_enqueue_change(vty, "./segment-list-name", NB_OP_MODIFY,
+			      list_name);
+	return nb_cli_apply_changes(vty, "./candidate-path[preference='%s']",
+				    preference_str);
+}
+
+DEFPY_NOSH(
+	srte_policy_candidate_dyn,
+	srte_policy_candidate_dyn_cmd,
+	"candidate-path preference (0-4294967295)$preference name WORD$name dynamic",
+	"Segment Routing Policy Candidate Path\n"
+	"Segment Routing Policy Candidate Path Preference\n"
+	"Administrative Preference\n"
+	"Segment Routing Policy Candidate Path Name\n"
+	"Symbolic Name\n"
+	"Dynamic Path\n")
+{
+	char xpath[XPATH_MAXLEN + XPATH_CANDIDATE_BASELEN];
+	int ret;
+
+	snprintf(xpath, sizeof(xpath), "%s/candidate-path[preference='%s']",
+		 VTY_CURR_XPATH, preference_str);
+
+	nb_cli_enqueue_change(vty, ".", NB_OP_CREATE, preference_str);
+	nb_cli_enqueue_change(vty, "./name", NB_OP_MODIFY, name);
+	nb_cli_enqueue_change(vty, "./protocol-origin", NB_OP_MODIFY, "local");
+	nb_cli_enqueue_change(vty, "./originator", NB_OP_MODIFY, "config");
+	nb_cli_enqueue_change(vty, "./type", NB_OP_MODIFY, "dynamic");
+	ret = nb_cli_apply_changes(vty, "./candidate-path[preference='%s']",
+				   preference_str);
+
+	if (ret == CMD_SUCCESS)
+		VTY_PUSH_XPATH(SR_CANDIDATE_DYN_NODE, xpath);
+
+	return ret;
+}
+
+DEFPY(srte_candidate_bandwidth,
+      srte_candidate_bandwidth_cmd,
+      "bandwidth BANDWIDTH$value [required$required]",
+      "Define a bandwidth constraint\n"
+      "Bandwidth value\n"
+      "Required constraint\n")
+{
+	nb_cli_enqueue_change(vty, "./constraints/bandwidth/required",
+			      NB_OP_MODIFY, required ? "true" : "false");
+	nb_cli_enqueue_change(vty, "./constraints/bandwidth/value",
+	                      NB_OP_MODIFY, value);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(srte_candidate_no_bandwidth,
+      srte_candidate_no_bandwidth_cmd,
+      "no bandwidth [BANDWIDTH$value] [required$required]",
+      NO_STR
+      "Remove a bandwidth constraint\n"
+      "Bandwidth value\n"
+      "Required constraint\n")
+{
+	nb_cli_enqueue_change(vty, "./constraints/bandwidth", NB_OP_DESTROY,
+	                      NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(srte_candidate_affinity_filter, srte_candidate_affinity_filter_cmd,
+      "affinity <exclude-any|include-any|include-all>$type BITPATTERN$value",
+      "Affinity constraint\n"
+      "Exclude any matching link\n"
+      "Include any matching link\n"
+      "Include all matching links\n"
+      "Attribute filter bit pattern as an hexadecimal value from 0x00000000 to 0xFFFFFFFF\n")
+{
+	uint32_t filter;
+	char xpath[XPATH_CANDIDATE_MAXLEN];
+	char decimal_value[11];
+
+	if (sscanf(value, "0x%x", &filter) != 1) {
+		vty_out(vty, "affinity type: fscanf: %s\n",
+			safe_strerror(errno));
+		return CMD_WARNING_CONFIG_FAILED;
+	}
+	snprintf(decimal_value, sizeof(decimal_value), "%u", filter);
+	snprintf(xpath, sizeof(xpath), "./constraints/affinity/%s", type);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY, decimal_value);
+
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(srte_candidate_no_affinity_filter, srte_candidate_no_affinity_filter_cmd,
+      "no affinity <exclude-any|include-any|include-all>$type [BITPATTERN$value]",
+      NO_STR
+      "Affinity constraint\n"
+      "Exclude any matching link\n"
+      "Include any matching link\n"
+      "Include all matching links\n"
+      "Attribute filter bit pattern as an hexadecimal value from 0x00000000 to 0xFFFFFFFF\n")
+{
+	char xpath[XPATH_CANDIDATE_MAXLEN];
+
+	snprintf(xpath, sizeof(xpath), "./constraints/affinity/%s", type);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(srte_candidate_metric,
+      srte_candidate_metric_cmd,
+      "metric [bound$bound] <igp|te|hc|abc|lmll|cigp|cte|pigp|pte|phc|msd|pd|pdv|pl|ppd|ppdv|ppl|nap|nlp|dc|bnc>$type METRIC$value [required$required]",
+      "Define a metric constraint\n"
+      "If the metric is bounded\n"
+      "IGP metric\n"
+      "TE metric\n"
+      "Hop Counts\n"
+      "Aggregate bandwidth consumption\n"
+      "Load of the most loaded link\n"
+      "Cumulative IGP cost\n"
+      "Cumulative TE cost\n"
+      "P2MP IGP metric\n"
+      "P2MP TE metric\n"
+      "P2MP hop count metric\n"
+      "Segment-ID (SID) Depth.\n"
+      "Path Delay metric\n"
+      "Path Delay Variation metric\n"
+      "Path Loss metric\n"
+      "P2MP Path Delay metric\n"
+      "P2MP Path Delay variation metric\n"
+      "P2MP Path Loss metric\n"
+      "Number of adaptations on a path\n"
+      "Number of layers on a path\n"
+      "Domain Count metric\n"
+      "Border Node Count metric\n"
+      "Metric value\n"
+      "Required constraint\n")
+{
+	char xpath[XPATH_CANDIDATE_MAXLEN];
+	snprintf(xpath, sizeof(xpath), "./constraints/metrics[type='%s']/value",
+	         type);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY, value);
+	snprintf(xpath, sizeof(xpath),
+	         "./constraints/metrics[type='%s']/is-bound", type);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY,
+			      (bound != NULL) ? "true" : "false");
+	snprintf(xpath, sizeof(xpath),
+	         "./constraints/metrics[type='%s']/required", type);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY,
+			      required ? "true" : "false");
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(srte_candidate_no_metric,
+      srte_candidate_no_metric_cmd,
+      "no metric [bound] <igp|te|hc|abc|lmll|cigp|cte|pigp|pte|phc|msd|pd|pdv|pl|ppd|ppdv|ppl|nap|nlp|dc|bnc>$type [METRIC$value] [required$required]",
+      NO_STR
+      "Remove a metric constraint\n"
+      "If the metric is bounded\n"
+      "IGP metric\n"
+      "TE metric\n"
+      "Hop Counts\n"
+      "Aggregate bandwidth consumption\n"
+      "Load of the most loaded link\n"
+      "Cumulative IGP cost\n"
+      "Cumulative TE cost\n"
+      "P2MP IGP metric\n"
+      "P2MP TE metric\n"
+      "P2MP hop count metric\n"
+      "Segment-ID (SID) Depth.\n"
+      "Path Delay metric\n"
+      "Path Delay Variation metric\n"
+      "Path Loss metric\n"
+      "P2MP Path Delay metric\n"
+      "P2MP Path Delay variation metric\n"
+      "P2MP Path Loss metric\n"
+      "Number of adaptations on a path\n"
+      "Number of layers on a path\n"
+      "Domain Count metric\n"
+      "Border Node Count metric\n"
+      "Metric value\n"
+      "Required constraint\n")
+{
+	char xpath[XPATH_CANDIDATE_MAXLEN];
+	snprintf(xpath, sizeof(xpath), "./constraints/metrics[type='%s']",
+	         type);
+	nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(srte_policy_no_candidate,
+      srte_policy_no_candidate_cmd,
+      "no candidate-path\
+	preference (0-4294967295)$preference\
+	[name WORD\
+	<\
+	  explicit segment-list WORD\
+	  |dynamic\
+	>]",
+      NO_STR
+      "Segment Routing Policy Candidate Path\n"
+      "Segment Routing Policy Candidate Path Preference\n"
+      "Administrative Preference\n"
+      "Segment Routing Policy Candidate Path Name\n"
+      "Symbolic Name\n"
+      "Explicit Path\n"
+      "List of SIDs\n"
+      "Name of the Segment List\n"
+      "Dynamic Path\n")
+{
+	nb_cli_enqueue_change(vty, ".", NB_OP_DESTROY, NULL);
+
+	return nb_cli_apply_changes(vty, "./candidate-path[preference='%s']",
+				    preference_str);
+}
+
+DEFPY(srte_candidate_objfun,
+      srte_candidate_objfun_cmd,
+      "objective-function <mcp|mlp|mbp|mbc|mll|mcc|spt|mct|mplp|mup|mrup|mtd|mbn|mctd|msl|mss|msn>$type [required$required]",
+      "Define an objective function constraint\n"
+      "Minimum Cost Path\n"
+      "Minimum Load Path\n"
+      "Maximum residual Bandwidth Path\n"
+      "Minimize aggregate Bandwidth Consumption\n"
+      "Minimize the Load of the most loaded Link\n"
+      "Minimize the Cumulative Cost of a set of paths\n"
+      "Shortest Path Tree\n"
+      "Minimum Cost Tree\n"
+      "Minimum Packet Loss Path\n"
+      "Maximum Under-Utilized Path\n"
+      "Maximum Reserved Under-Utilized Path\n"
+      "Minimize the number of Transit Domains\n"
+      "Minimize the number of Border Nodes\n"
+      "Minimize the number of Common Transit Domains\n"
+      "Minimize the number of Shared Links\n"
+      "Minimize the number of Shared SRLGs\n"
+      "Minimize the number of Shared Nodes\n"
+      "Required constraint\n")
+{
+	char xpath[XPATH_CANDIDATE_MAXLEN];
+	nb_cli_enqueue_change(vty, "./constraints/objective-function",
+	                      NB_OP_DESTROY, NULL);
+	snprintf(xpath, sizeof(xpath),
+	         "./constraints/objective-function/required");
+	nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY,
+			      required ? "true" : "false");
+	nb_cli_enqueue_change(vty, "./constraints/objective-function/type",
+	                      NB_OP_MODIFY, type);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+DEFPY(srte_candidate_no_objfun,
+      srte_candidate_no_objfun_cmd,
+      "no objective-function [<mcp|mlp|mbp|mbc|mll|mcc|spt|mct|mplp|mup|mrup|mtd|mbn|mctd|msl|mss|msn>] [required$required]",
+      NO_STR
+      "Remove an objective function constraint\n"
+      "Minimum Cost Path\n"
+      "Minimum Load Path\n"
+      "Maximum residual Bandwidth Path\n"
+      "Minimize aggregate Bandwidth Consumption\n"
+      "Minimize the Load of the most loaded Link\n"
+      "Minimize the Cumulative Cost of a set of paths\n"
+      "Shortest Path Tree\n"
+      "Minimum Cost Tree\n"
+      "Minimum Packet Loss Path\n"
+      "Maximum Under-Utilized Path\n"
+      "Maximum Reserved Under-Utilized Path\n"
+      "Minimize the number of Transit Domains\n"
+      "Minimize the number of Border Nodes\n"
+      "Minimize the number of Common Transit Domains\n"
+      "Minimize the number of Shared Links\n"
+      "Minimize the number of Shared SRLGs\n"
+      "Minimize the number of Shared Nodes\n"
+      "Required constraint\n")
+{
+	nb_cli_enqueue_change(vty, "./constraints/objective-function",
+	                      NB_OP_DESTROY, NULL);
+	return nb_cli_apply_changes(vty, NULL);
+}
+
+static const char *objfun_type_name(enum objfun_type type)
+{
+	switch (type) {
+	case OBJFUN_MCP:
+		return "mcp";
+	case OBJFUN_MLP:
+		return "mlp";
+	case OBJFUN_MBP:
+		return "mbp";
+	case OBJFUN_MBC:
+		return "mbc";
+	case OBJFUN_MLL:
+		return "mll";
+	case OBJFUN_MCC:
+		return "mcc";
+	case OBJFUN_SPT:
+		return "spt";
+	case OBJFUN_MCT:
+		return "mct";
+	case OBJFUN_MPLP:
+		return "mplp";
+	case OBJFUN_MUP:
+		return "mup";
+	case OBJFUN_MRUP:
+		return "mrup";
+	case OBJFUN_MTD:
+		return "mtd";
+	case OBJFUN_MBN:
+		return "mbn";
+	case OBJFUN_MCTD:
+		return "mctd";
+	case OBJFUN_MSL:
+		return "msl";
+	case OBJFUN_MSS:
+		return "mss";
+	case OBJFUN_MSN:
+		return "msn";
+	case OBJFUN_UNDEFINED:
+		return NULL;
+	}
+
+	assert(!"Reached end of function we should never hit");
+}
+
+DEFPY_NOSH(show_debugging_pathd, show_debugging_pathd_cmd,
+	   "show debugging [pathd]",
+	   SHOW_STR
+	   "State of each debugging option\n"
+	   "pathd module debugging\n")
+{
+
+	vty_out(vty, "Path debugging status:\n");
+
+	cmd_show_lib_debugs(vty);
+	/* nothing to do here */
+	path_ted_show_debugging(vty);
+	path_policy_show_debugging(vty);
+	return CMD_SUCCESS;
+}
+
+DEFPY(debug_path_policy, debug_path_policy_cmd, "[no] debug pathd policy",
+      NO_STR DEBUG_STR
+      "path debugging\n"
+      "policy debugging\n")
+{
+	uint32_t mode = DEBUG_NODE2MODE(vty->node);
+	bool no_debug = no;
+
+	DEBUG_MODE_SET(&path_policy_debug, mode, !no);
+	DEBUG_FLAGS_SET(&path_policy_debug, PATH_POLICY_DEBUG_BASIC, !no_debug);
+	return CMD_SUCCESS;
+}
+
+static const char *metric_type_name(enum srte_candidate_metric_type type)
+{
+	switch (type) {
+	case SRTE_CANDIDATE_METRIC_TYPE_IGP:
+		return "igp";
+	case SRTE_CANDIDATE_METRIC_TYPE_TE:
+		return "te";
+	case SRTE_CANDIDATE_METRIC_TYPE_HC:
+		return "hc";
+	case SRTE_CANDIDATE_METRIC_TYPE_ABC:
+		return "abc";
+	case SRTE_CANDIDATE_METRIC_TYPE_LMLL:
+		return "lmll";
+	case SRTE_CANDIDATE_METRIC_TYPE_CIGP:
+		return "cigp";
+	case SRTE_CANDIDATE_METRIC_TYPE_CTE:
+		return "cte";
+	case SRTE_CANDIDATE_METRIC_TYPE_PIGP:
+		return "pigp";
+	case SRTE_CANDIDATE_METRIC_TYPE_PTE:
+		return "pte";
+	case SRTE_CANDIDATE_METRIC_TYPE_PHC:
+		return "phc";
+	case SRTE_CANDIDATE_METRIC_TYPE_MSD:
+		return "msd";
+	case SRTE_CANDIDATE_METRIC_TYPE_PD:
+		return "pd";
+	case SRTE_CANDIDATE_METRIC_TYPE_PDV:
+		return "pdv";
+	case SRTE_CANDIDATE_METRIC_TYPE_PL:
+		return "pl";
+	case SRTE_CANDIDATE_METRIC_TYPE_PPD:
+		return "ppd";
+	case SRTE_CANDIDATE_METRIC_TYPE_PPDV:
+		return "ppdv";
+	case SRTE_CANDIDATE_METRIC_TYPE_PPL:
+		return "ppl";
+	case SRTE_CANDIDATE_METRIC_TYPE_NAP:
+		return "nap";
+	case SRTE_CANDIDATE_METRIC_TYPE_NLP:
+		return "nlp";
+	case SRTE_CANDIDATE_METRIC_TYPE_DC:
+		return "dc";
+	case SRTE_CANDIDATE_METRIC_TYPE_BNC:
+		return "bnc";
+	default:
+		return NULL;
+	}
+}
+
+static void config_write_float(struct vty *vty, float value)
+{
+	if (fabs(truncf(value) - value) < FLT_EPSILON) {
+		vty_out(vty, " %d", (int)value);
+		return;
+	} else {
+		vty_out(vty, " %f", value);
+	}
+}
+
+static void config_write_metric(struct vty *vty,
+				enum srte_candidate_metric_type type,
+				float value, bool required, bool is_bound)
+{
+	const char *name = metric_type_name(type);
+	if (name == NULL)
+		return;
+	vty_out(vty, "    metric %s%s", is_bound ? "bound " : "",
+	        metric_type_name(type));
+	config_write_float(vty, value);
+	vty_out(vty, required ? " required" : "");
+	vty_out(vty, "\n");
+}
+
+static int config_write_metric_cb(const struct lyd_node *dnode, void *arg)
+{
+	struct vty *vty = arg;
+	enum srte_candidate_metric_type type;
+	bool required, is_bound = false;
+	float value;
+
+	type = yang_dnode_get_enum(dnode, "./type");
+	value = (float)yang_dnode_get_dec64(dnode, "./value");
+	required = yang_dnode_get_bool(dnode, "./required");
+	if (yang_dnode_exists(dnode, "./is-bound"))
+		is_bound = yang_dnode_get_bool(dnode, "./is-bound");
+
+	config_write_metric(vty, type, value, required, is_bound);
+	return YANG_ITER_CONTINUE;
+}
+
+void cli_show_srte_policy_candidate_path(struct vty *vty,
+					 const struct lyd_node *dnode,
+					 bool show_defaults)
+{
+	float bandwidth;
+	uint32_t affinity;
+	bool required;
+	enum objfun_type objfun_type;
+	const char *type = yang_dnode_get_string(dnode, "./type");
+
+	vty_out(vty, "   candidate-path preference %s name %s %s",
+		yang_dnode_get_string(dnode, "./preference"),
+		yang_dnode_get_string(dnode, "./name"), type);
+	if (strmatch(type, "explicit"))
+		vty_out(vty, " segment-list %s",
+			yang_dnode_get_string(dnode, "./segment-list-name"));
+	vty_out(vty, "\n");
+
+	if (strmatch(type, "dynamic")) {
+		if (yang_dnode_exists(dnode, "./constraints/bandwidth")) {
+			bandwidth = (float)yang_dnode_get_dec64(
+				dnode, "./constraints/bandwidth/value");
+			required = yang_dnode_get_bool(
+				dnode, "./constraints/bandwidth/required");
+			vty_out(vty, "    bandwidth");
+			config_write_float(vty, bandwidth);
+			if (required)
+				vty_out(vty, " required");
+			vty_out(vty, "\n");
+		}
+		if (yang_dnode_exists(dnode,
+				      "./constraints/affinity/exclude-any")) {
+			affinity = yang_dnode_get_uint32(
+				dnode, "./constraints/affinity/exclude-any");
+			vty_out(vty, "    affinity exclude-any 0x%08x\n",
+				affinity);
+		}
+		if (yang_dnode_exists(dnode,
+				      "./constraints/affinity/include-any")) {
+			affinity = yang_dnode_get_uint32(
+				dnode, "./constraints/affinity/include-any");
+			vty_out(vty, "    affinity include-any 0x%08x\n",
+				affinity);
+		}
+		if (yang_dnode_exists(dnode,
+				      "./constraints/affinity/include-all")) {
+			affinity = yang_dnode_get_uint32(
+				dnode, "./constraints/affinity/include-all");
+			vty_out(vty, "    affinity include-all 0x%08x\n",
+				affinity);
+		}
+		yang_dnode_iterate(config_write_metric_cb, vty, dnode,
+				   "./constraints/metrics");
+		if (yang_dnode_exists(dnode,
+		                      "./constraints/objective-function")) {
+			objfun_type = yang_dnode_get_enum(dnode,
+				"./constraints/objective-function/type");
+			required = yang_dnode_get_bool(dnode,
+				"./constraints/objective-function/required");
+			vty_out(vty, "    objective-function %s%s\n",
+			        objfun_type_name(objfun_type),
+				required ? " required" : "");
+		}
+	}
+}
+
+void cli_show_srte_policy_candidate_path_end(struct vty *vty,
+					     const struct lyd_node *dnode)
+{
+	const char *type = yang_dnode_get_string(dnode, "./type");
+
+	if (strmatch(type, "dynamic"))
+		vty_out(vty, "   exit\n");
+}
+
+static int config_write_dnode(const struct lyd_node *dnode, void *arg)
+{
+	struct vty *vty = arg;
+
+	nb_cli_show_dnode_cmds(vty, dnode, false);
+
+	return YANG_ITER_CONTINUE;
+}
+
+int config_write_segment_routing(struct vty *vty)
+{
+	vty_out(vty, "segment-routing\n");
+	vty_out(vty, " traffic-eng\n");
+
+	path_ted_config_write(vty);
+
+	yang_dnode_iterate(config_write_dnode, vty, running_config->dnode,
+			   "/frr-pathd:pathd/srte/segment-list");
+	yang_dnode_iterate(config_write_dnode, vty, running_config->dnode,
+			   "/frr-pathd:pathd/srte/policy");
+
+	hook_call(pathd_srte_config_write, vty);
+
+	vty_out(vty, " exit\n");
+	vty_out(vty, "exit\n");
+
+	return 1;
+}
+
+static int path_policy_cli_debug_config_write(struct vty *vty)
+{
+	if (DEBUG_MODE_CHECK(&path_policy_debug, DEBUG_MODE_CONF)) {
+		if (DEBUG_FLAGS_CHECK(&path_policy_debug,
+				      PATH_POLICY_DEBUG_BASIC))
+			vty_out(vty, "debug pathd policy\n");
+		return 1;
+	}
+	return 0;
+}
+
+static int path_policy_cli_debug_set_all(uint32_t flags, bool set)
+{
+	DEBUG_FLAGS_SET(&path_policy_debug, flags, set);
+
+	/* If all modes have been turned off, don't preserve options. */
+	if (!DEBUG_MODE_CHECK(&path_policy_debug, DEBUG_MODE_ALL))
+		DEBUG_CLEAR(&path_policy_debug);
+
+	return 0;
+}
+
+void path_cli_init(void)
+{
+	hook_register(nb_client_debug_config_write,
+		      path_policy_cli_debug_config_write);
+	hook_register(nb_client_debug_set_all, path_policy_cli_debug_set_all);
+
+	install_node(&segment_routing_node);
+	install_node(&sr_traffic_eng_node);
+	install_node(&srte_segment_list_node);
+	install_node(&srte_policy_node);
+	install_node(&srte_candidate_dyn_node);
+	install_default(SEGMENT_ROUTING_NODE);
+	install_default(SR_TRAFFIC_ENG_NODE);
+	install_default(SR_SEGMENT_LIST_NODE);
+	install_default(SR_POLICY_NODE);
+	install_default(SR_CANDIDATE_DYN_NODE);
+
+	install_element(ENABLE_NODE, &show_debugging_pathd_cmd);
+	install_element(ENABLE_NODE, &show_srte_policy_cmd);
+	install_element(ENABLE_NODE, &show_srte_policy_detail_cmd);
+
+	install_element(ENABLE_NODE, &debug_path_policy_cmd);
+	install_element(CONFIG_NODE, &debug_path_policy_cmd);
+
+	install_element(CONFIG_NODE, &segment_routing_cmd);
+	install_element(SEGMENT_ROUTING_NODE, &sr_traffic_eng_cmd);
+	install_element(SR_TRAFFIC_ENG_NODE, &srte_segment_list_cmd);
+	install_element(SR_TRAFFIC_ENG_NODE, &srte_no_segment_list_cmd);
+	install_element(SR_SEGMENT_LIST_NODE,
+			&srte_segment_list_segment_cmd);
+	install_element(SR_SEGMENT_LIST_NODE,
+			&srte_segment_list_no_segment_cmd);
+	install_element(SR_TRAFFIC_ENG_NODE, &srte_policy_cmd);
+	install_element(SR_TRAFFIC_ENG_NODE, &srte_no_policy_cmd);
+	install_element(SR_POLICY_NODE, &srte_policy_name_cmd);
+	install_element(SR_POLICY_NODE, &srte_policy_no_name_cmd);
+	install_element(SR_POLICY_NODE, &srte_policy_binding_sid_cmd);
+	install_element(SR_POLICY_NODE, &srte_policy_no_binding_sid_cmd);
+	install_element(SR_POLICY_NODE, &srte_policy_candidate_exp_cmd);
+	install_element(SR_POLICY_NODE, &srte_policy_candidate_dyn_cmd);
+	install_element(SR_POLICY_NODE, &srte_policy_no_candidate_cmd);
+	install_element(SR_CANDIDATE_DYN_NODE,
+			&srte_candidate_bandwidth_cmd);
+	install_element(SR_CANDIDATE_DYN_NODE,
+			&srte_candidate_no_bandwidth_cmd);
+	install_element(SR_CANDIDATE_DYN_NODE,
+			&srte_candidate_affinity_filter_cmd);
+	install_element(SR_CANDIDATE_DYN_NODE,
+			&srte_candidate_no_affinity_filter_cmd);
+	install_element(SR_CANDIDATE_DYN_NODE,
+			&srte_candidate_metric_cmd);
+	install_element(SR_CANDIDATE_DYN_NODE,
+			&srte_candidate_no_metric_cmd);
+	install_element(SR_CANDIDATE_DYN_NODE,
+			&srte_candidate_objfun_cmd);
+	install_element(SR_CANDIDATE_DYN_NODE,
+			&srte_candidate_no_objfun_cmd);
+}