Merging upstream version 10.0.

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

1 files changed, 82 insertions, 304 deletions

diff --git a/zebra/zebra_vty.c b/zebra/zebra_vty.c
index d36c2f8..9a68d5a 100644
--- a/zebra/zebra_vty.c
+++ b/zebra/zebra_vty.c
@@ -20,6 +20,7 @@
 #include "vxlan.h"
 #include "termtable.h"
 #include "affinitymap.h"
+#include "frrdistance.h"
 
 #include "zebra/zebra_router.h"
 #include "zebra/zserv.h"
@@ -50,6 +51,7 @@
 #include "zebra/zebra_script.h"
 #include "zebra/rtadv.h"
 #include "zebra/zebra_neigh.h"
+#include "zebra/zebra_ptm.h"
 
 /* context to manage dumps in multiple tables or vrfs */
 struct route_show_ctx {
@@ -58,8 +60,8 @@ struct route_show_ctx {
 };
 
 static int do_show_ip_route(struct vty *vty, const char *vrf_name, afi_t afi,
-			    safi_t safi, bool use_fib, bool use_json,
-			    route_tag_t tag,
+			    safi_t safi, bool use_fib, json_object *vrf_json,
+			    bool use_json, route_tag_t tag,
 			    const struct prefix *longer_prefix_p,
 			    bool supernets_only, int type,
 			    unsigned short ospf_instance_id, uint32_t tableid,
@@ -146,8 +148,8 @@ DEFPY (show_ip_rpf,
 	};
 
 	return do_show_ip_route(vty, VRF_DEFAULT_NAME, ip ? AFI_IP : AFI_IP6,
-				SAFI_MULTICAST, false, uj, 0, NULL, false, 0, 0,
-				0, false, &ctx);
+				SAFI_MULTICAST, false, NULL, uj, 0, NULL, false,
+				0, 0, 0, false, &ctx);
 }
 
 DEFPY (show_ip_rpf_addr,
@@ -764,9 +766,10 @@ static void vty_show_ip_route(struct vty *vty, struct route_node *rn,
 	}
 
 	/* Distance and metric display. */
-	if (((re->type == ZEBRA_ROUTE_CONNECT) &&
+	if (((re->type == ZEBRA_ROUTE_CONNECT ||
+	      re->type == ZEBRA_ROUTE_LOCAL) &&
 	     (re->distance || re->metric)) ||
-	    (re->type != ZEBRA_ROUTE_CONNECT))
+	    (re->type != ZEBRA_ROUTE_CONNECT && re->type != ZEBRA_ROUTE_LOCAL))
 		len += vty_out(vty, " [%u/%u]", re->distance,
 			       re->metric);
 
@@ -853,14 +856,13 @@ static void vty_show_ip_route_detail_json(struct vty *vty,
 	vty_json(vty, json);
 }
 
-static void do_show_route_helper(struct vty *vty, struct zebra_vrf *zvrf,
-				 struct route_table *table, afi_t afi,
-				 bool use_fib, route_tag_t tag,
-				 const struct prefix *longer_prefix_p,
-				 bool supernets_only, int type,
-				 unsigned short ospf_instance_id, bool use_json,
-				 uint32_t tableid, bool show_ng,
-				 struct route_show_ctx *ctx)
+static void
+do_show_route_helper(struct vty *vty, struct zebra_vrf *zvrf,
+		     struct route_table *table, afi_t afi, bool use_fib,
+		     json_object *vrf_json, route_tag_t tag,
+		     const struct prefix *longer_prefix_p, bool supernets_only,
+		     int type, unsigned short ospf_instance_id, bool use_json,
+		     uint32_t tableid, bool show_ng, struct route_show_ctx *ctx)
 {
 	struct route_node *rn;
 	struct route_entry *re;
@@ -882,7 +884,7 @@ static void do_show_route_helper(struct vty *vty, struct zebra_vrf *zvrf,
 	 *   => display the VRF and table if specific
 	 */
 
-	if (use_json)
+	if (use_json && !vrf_json)
 		json = json_object_new_object();
 
 	/* Show all routes. */
@@ -957,7 +959,11 @@ static void do_show_route_helper(struct vty *vty, struct zebra_vrf *zvrf,
 
 		if (json_prefix) {
 			prefix2str(&rn->p, buf, sizeof(buf));
-			json_object_object_add(json, buf, json_prefix);
+			if (!vrf_json)
+				json_object_object_add(json, buf, json_prefix);
+			else
+				json_object_object_add(vrf_json, buf,
+						       json_prefix);
 			json_prefix = NULL;
 		}
 	}
@@ -966,13 +972,15 @@ static void do_show_route_helper(struct vty *vty, struct zebra_vrf *zvrf,
 	 * This is an extremely expensive operation at scale
 	 * and non-pretty reduces memory footprint significantly.
 	 */
-	if (use_json)
+	if (use_json && !vrf_json) {
 		vty_json_no_pretty(vty, json);
+		json = NULL;
+	}
 }
 
 static void do_show_ip_route_all(struct vty *vty, struct zebra_vrf *zvrf,
-				 afi_t afi, bool use_fib, bool use_json,
-				 route_tag_t tag,
+				 afi_t afi, bool use_fib, json_object *vrf_json,
+				 bool use_json, route_tag_t tag,
 				 const struct prefix *longer_prefix_p,
 				 bool supernets_only, int type,
 				 unsigned short ospf_instance_id, bool show_ng,
@@ -992,15 +1000,15 @@ static void do_show_ip_route_all(struct vty *vty, struct zebra_vrf *zvrf,
 			continue;
 
 		do_show_ip_route(vty, zvrf_name(zvrf), afi, SAFI_UNICAST,
-				 use_fib, use_json, tag, longer_prefix_p,
-				 supernets_only, type, ospf_instance_id,
-				 zrt->tableid, show_ng, ctx);
+				 use_fib, vrf_json, use_json, tag,
+				 longer_prefix_p, supernets_only, type,
+				 ospf_instance_id, zrt->tableid, show_ng, ctx);
 	}
 }
 
 static int do_show_ip_route(struct vty *vty, const char *vrf_name, afi_t afi,
-			    safi_t safi, bool use_fib, bool use_json,
-			    route_tag_t tag,
+			    safi_t safi, bool use_fib, json_object *vrf_json,
+			    bool use_json, route_tag_t tag,
 			    const struct prefix *longer_prefix_p,
 			    bool supernets_only, int type,
 			    unsigned short ospf_instance_id, uint32_t tableid,
@@ -1035,7 +1043,7 @@ static int do_show_ip_route(struct vty *vty, const char *vrf_name, afi_t afi,
 		return CMD_SUCCESS;
 	}
 
-	do_show_route_helper(vty, zvrf, table, afi, use_fib, tag,
+	do_show_route_helper(vty, zvrf, table, afi, use_fib, vrf_json, tag,
 			     longer_prefix_p, supernets_only, type,
 			     ospf_instance_id, use_json, tableid, show_ng, ctx);
 
@@ -1161,27 +1169,6 @@ DEFPY (show_ip_nht,
 	return CMD_SUCCESS;
 }
 
-DEFUN (ip_nht_default_route,
-       ip_nht_default_route_cmd,
-       "ip nht resolve-via-default",
-       IP_STR
-       "Filter Next Hop tracking route resolution\n"
-       "Resolve via default route\n")
-{
-	ZEBRA_DECLVAR_CONTEXT_VRF(vrf, zvrf);
-
-	if (!zvrf)
-		return CMD_WARNING;
-
-	if (zvrf->zebra_rnh_ip_default_route)
-		return CMD_SUCCESS;
-
-	zvrf->zebra_rnh_ip_default_route = true;
-
-	zebra_evaluate_rnh(zvrf, AFI_IP, 0, NULL, SAFI_UNICAST);
-	return CMD_SUCCESS;
-}
-
 static void show_nexthop_group_out(struct vty *vty, struct nhg_hash_entry *nhe,
 				   json_object *json_nhe_hdr)
 {
@@ -1680,68 +1667,6 @@ DEFPY_HIDDEN(backup_nexthop_recursive_use_enable,
 	return CMD_SUCCESS;
 }
 
-DEFUN (no_ip_nht_default_route,
-       no_ip_nht_default_route_cmd,
-       "no ip nht resolve-via-default",
-       NO_STR
-       IP_STR
-       "Filter Next Hop tracking route resolution\n"
-       "Resolve via default route\n")
-{
-	ZEBRA_DECLVAR_CONTEXT_VRF(vrf, zvrf);
-
-	if (!zvrf)
-		return CMD_WARNING;
-
-	if (!zvrf->zebra_rnh_ip_default_route)
-		return CMD_SUCCESS;
-
-	zvrf->zebra_rnh_ip_default_route = false;
-	zebra_evaluate_rnh(zvrf, AFI_IP, 0, NULL, SAFI_UNICAST);
-	return CMD_SUCCESS;
-}
-
-DEFUN (ipv6_nht_default_route,
-       ipv6_nht_default_route_cmd,
-       "ipv6 nht resolve-via-default",
-       IP6_STR
-       "Filter Next Hop tracking route resolution\n"
-       "Resolve via default route\n")
-{
-	ZEBRA_DECLVAR_CONTEXT_VRF(vrf, zvrf);
-
-	if (!zvrf)
-		return CMD_WARNING;
-
-	if (zvrf->zebra_rnh_ipv6_default_route)
-		return CMD_SUCCESS;
-
-	zvrf->zebra_rnh_ipv6_default_route = true;
-	zebra_evaluate_rnh(zvrf, AFI_IP6, 0, NULL, SAFI_UNICAST);
-	return CMD_SUCCESS;
-}
-
-DEFUN (no_ipv6_nht_default_route,
-       no_ipv6_nht_default_route_cmd,
-       "no ipv6 nht resolve-via-default",
-       NO_STR
-       IP6_STR
-       "Filter Next Hop tracking route resolution\n"
-       "Resolve via default route\n")
-{
-	ZEBRA_DECLVAR_CONTEXT_VRF(vrf, zvrf);
-
-	if (!zvrf)
-		return CMD_WARNING;
-
-	if (!zvrf->zebra_rnh_ipv6_default_route)
-		return CMD_SUCCESS;
-
-	zvrf->zebra_rnh_ipv6_default_route = false;
-	zebra_evaluate_rnh(zvrf, AFI_IP6, 0, NULL, SAFI_UNICAST);
-	return CMD_SUCCESS;
-}
-
 DEFPY_HIDDEN(rnh_hide_backups, rnh_hide_backups_cmd,
 	     "[no] ip nht hide-backup-events",
 	     NO_STR
@@ -1815,6 +1740,7 @@ DEFPY (show_route,
 	struct route_show_ctx ctx = {
 		.multi = vrf_all || table_all,
 	};
+	json_object *root_json = NULL;
 
 	if (!vrf_is_backend_netns()) {
 		if ((vrf_all || vrf_name) && (table || table_all)) {
@@ -1836,24 +1762,42 @@ DEFPY (show_route,
 	}
 
 	if (vrf_all) {
+		if (!!json)
+			root_json = json_object_new_object();
 		RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
+			json_object *vrf_json = NULL;
+
 			if ((zvrf = vrf->info) == NULL
 			    || (zvrf->table[afi][SAFI_UNICAST] == NULL))
 				continue;
 
+			if (!!json)
+				vrf_json = json_object_new_object();
+
 			if (table_all)
-				do_show_ip_route_all(
-					vty, zvrf, afi, !!fib, !!json, tag,
-					prefix_str ? prefix : NULL,
-					!!supernets_only, type,
-					ospf_instance_id, !!ng, &ctx);
+				do_show_ip_route_all(vty, zvrf, afi, !!fib,
+						     vrf_json, !!json, tag,
+						     prefix_str ? prefix : NULL,
+						     !!supernets_only, type,
+						     ospf_instance_id, !!ng,
+						     &ctx);
 			else
-				do_show_ip_route(
-					vty, zvrf_name(zvrf), afi, SAFI_UNICAST,
-					!!fib, !!json, tag,
-					prefix_str ? prefix : NULL,
-					!!supernets_only, type,
-					ospf_instance_id, table, !!ng, &ctx);
+				do_show_ip_route(vty, zvrf_name(zvrf), afi,
+						 SAFI_UNICAST, !!fib, vrf_json,
+						 !!json, tag,
+						 prefix_str ? prefix : NULL,
+						 !!supernets_only, type,
+						 ospf_instance_id, table, !!ng,
+						 &ctx);
+
+			if (!!json)
+				json_object_object_add(root_json,
+						       zvrf_name(zvrf),
+						       vrf_json);
+		}
+		if (!!json) {
+			vty_json_no_pretty(vty, root_json);
+			root_json = NULL;
 		}
 	} else {
 		vrf_id_t vrf_id = VRF_DEFAULT;
@@ -1869,13 +1813,13 @@ DEFPY (show_route,
 			return CMD_SUCCESS;
 
 		if (table_all)
-			do_show_ip_route_all(vty, zvrf, afi, !!fib, !!json, tag,
-					     prefix_str ? prefix : NULL,
+			do_show_ip_route_all(vty, zvrf, afi, !!fib, NULL, !!json,
+					     tag, prefix_str ? prefix : NULL,
 					     !!supernets_only, type,
 					     ospf_instance_id, !!ng, &ctx);
 		else
 			do_show_ip_route(vty, vrf->name, afi, SAFI_UNICAST,
-					 !!fib, !!json, tag,
+					 !!fib, NULL, !!json, tag,
 					 prefix_str ? prefix : NULL,
 					 !!supernets_only, type,
 					 ospf_instance_id, table, !!ng, &ctx);
@@ -2251,7 +2195,8 @@ static void show_ip_route_dump_vty(struct vty *vty, struct route_table *table)
 				vrf_id_to_name(re->vrf_id));
 			vty_out(vty, "   flags: %u\n", re->flags);
 
-			if (re->type != ZEBRA_ROUTE_CONNECT) {
+			if (re->type != ZEBRA_ROUTE_CONNECT &&
+			    re->type != ZEBRA_ROUTE_LOCAL) {
 				vty_out(vty, "   distance: %u\n", re->distance);
 				vty_out(vty, "   metric: %u\n", re->metric);
 			}
@@ -2724,146 +2669,6 @@ DEFPY(evpn_mh_redirect_off, evpn_mh_redirect_off_cmd,
 	return zebra_evpn_mh_redirect_off(vty, redirect_off);
 }
 
-DEFUN (default_vrf_vni_mapping,
-       default_vrf_vni_mapping_cmd,
-       "vni " CMD_VNI_RANGE "[prefix-routes-only]",
-       "VNI corresponding to the DEFAULT VRF\n"
-       "VNI-ID\n"
-       "Prefix routes only \n")
-{
-	char xpath[XPATH_MAXLEN];
-	int filter = 0;
-
-	if (argc == 3)
-		filter = 1;
-
-	snprintf(xpath, sizeof(xpath), FRR_VRF_KEY_XPATH "/frr-zebra:zebra",
-		 VRF_DEFAULT_NAME);
-	nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
-
-	snprintf(xpath, sizeof(xpath),
-		 FRR_VRF_KEY_XPATH "/frr-zebra:zebra/l3vni-id",
-		 VRF_DEFAULT_NAME);
-	nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY, argv[1]->arg);
-
-	if (filter) {
-		snprintf(xpath, sizeof(xpath),
-			 FRR_VRF_KEY_XPATH "/frr-zebra:zebra/prefix-only",
-			 VRF_DEFAULT_NAME);
-		nb_cli_enqueue_change(vty, xpath, NB_OP_MODIFY, "true");
-	}
-
-	return nb_cli_apply_changes(vty, NULL);
-}
-
-DEFUN (no_default_vrf_vni_mapping,
-       no_default_vrf_vni_mapping_cmd,
-       "no vni " CMD_VNI_RANGE "[prefix-routes-only]",
-       NO_STR
-       "VNI corresponding to DEFAULT VRF\n"
-       "VNI-ID\n"
-       "Prefix routes only \n")
-{
-	char xpath[XPATH_MAXLEN];
-	int filter = 0;
-	vni_t vni = strtoul(argv[2]->arg, NULL, 10);
-	struct zebra_vrf *zvrf = NULL;
-
-	zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT);
-
-	if (argc == 4)
-		filter = 1;
-
-	if (zvrf->l3vni != vni) {
-		vty_out(vty, "VNI %d doesn't exist in VRF: %s \n", vni,
-			zvrf->vrf->name);
-		return CMD_WARNING;
-	}
-
-	snprintf(xpath, sizeof(xpath),
-		 FRR_VRF_KEY_XPATH "/frr-zebra:zebra/l3vni-id",
-		 VRF_DEFAULT_NAME);
-	nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, argv[2]->arg);
-
-	if (filter) {
-		snprintf(xpath, sizeof(xpath),
-			 FRR_VRF_KEY_XPATH "/frr-zebra:zebra/prefix-only",
-			 VRF_DEFAULT_NAME);
-		nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, "true");
-	}
-
-	snprintf(xpath, sizeof(xpath), FRR_VRF_KEY_XPATH "/frr-zebra:zebra",
-		 VRF_DEFAULT_NAME);
-	nb_cli_enqueue_change(vty, xpath, NB_OP_DESTROY, NULL);
-
-	return nb_cli_apply_changes(vty, NULL);
-}
-
-DEFUN (vrf_vni_mapping,
-       vrf_vni_mapping_cmd,
-       "vni " CMD_VNI_RANGE "[prefix-routes-only]",
-       "VNI corresponding to tenant VRF\n"
-       "VNI-ID\n"
-       "prefix-routes-only\n")
-{
-	int filter = 0;
-
-	ZEBRA_DECLVAR_CONTEXT_VRF(vrf, zvrf);
-
-	assert(vrf);
-	assert(zvrf);
-
-	if (argc == 3)
-		filter = 1;
-
-	nb_cli_enqueue_change(vty, "./frr-zebra:zebra", NB_OP_CREATE, NULL);
-	nb_cli_enqueue_change(vty, "./frr-zebra:zebra/l3vni-id", NB_OP_MODIFY,
-			      argv[1]->arg);
-
-	if (filter)
-		nb_cli_enqueue_change(vty, "./frr-zebra:zebra/prefix-only",
-				      NB_OP_MODIFY, "true");
-
-	return nb_cli_apply_changes(vty, NULL);
-}
-
-DEFUN (no_vrf_vni_mapping,
-       no_vrf_vni_mapping_cmd,
-       "no vni " CMD_VNI_RANGE "[prefix-routes-only]",
-       NO_STR
-       "VNI corresponding to tenant VRF\n"
-       "VNI-ID\n"
-       "prefix-routes-only\n")
-{
-	int filter = 0;
-
-	ZEBRA_DECLVAR_CONTEXT_VRF(vrf, zvrf);
-	vni_t vni = strtoul(argv[2]->arg, NULL, 10);
-
-	assert(vrf);
-	assert(zvrf);
-
-	if (argc == 4)
-		filter = 1;
-
-	if (zvrf->l3vni != vni) {
-		vty_out(vty, "VNI %d doesn't exist in VRF: %s \n", vni,
-			zvrf->vrf->name);
-		return CMD_WARNING;
-	}
-
-	nb_cli_enqueue_change(vty, "./frr-zebra:zebra/l3vni-id", NB_OP_DESTROY,
-			      argv[2]->arg);
-
-	if (filter)
-		nb_cli_enqueue_change(vty, "./frr-zebra:zebra/prefix-only",
-				      NB_OP_DESTROY, "true");
-
-	nb_cli_enqueue_change(vty, "./frr-zebra:zebra", NB_OP_DESTROY, NULL);
-
-	return nb_cli_apply_changes(vty, NULL);
-}
-
 /* show vrf */
 DEFPY (show_vrf_vni,
        show_vrf_vni_cmd,
@@ -4028,6 +3833,17 @@ static int config_write_protocol(struct vty *vty)
 	return 1;
 }
 
+static inline bool zebra_vty_v6_rr_semantics_used(void)
+{
+	if (zebra_nhg_kernel_nexthops_enabled())
+		return true;
+
+	if (zrouter.v6_rr_semantics)
+		return true;
+
+	return false;
+}
+
 DEFUN (show_zebra,
        show_zebra_cmd,
        "show zebra",
@@ -4047,7 +3863,9 @@ DEFUN (show_zebra,
 	ttable_add_row(table, "MPLS|%s", mpls_enabled ? "On" : "Off");
 	ttable_add_row(table, "EVPN|%s", is_evpn_enabled() ? "On" : "Off");
 	ttable_add_row(table, "Kernel socket buffer size|%d", rcvbufsize);
-
+	ttable_add_row(table, "v6 Route Replace Semantics|%s",
+		       zebra_vty_v6_rr_semantics_used() ? "Replace"
+							: "Delete then Add");
 
 #ifdef GNU_LINUX
 	if (!vrf_is_backend_netns())
@@ -4482,31 +4300,6 @@ DEFPY (no_zebra_protodown_bit,
 
 #endif /* HAVE_NETLINK */
 
-DEFUN(ip_table_range, ip_table_range_cmd,
-      "[no] ip table range (1-4294967295) (1-4294967295)",
-      NO_STR IP_STR
-      "table configuration\n"
-      "Configure table range\n"
-      "Start Routing Table\n"
-      "End Routing Table\n")
-{
-	ZEBRA_DECLVAR_CONTEXT_VRF(vrf, zvrf);
-
-	if (!zvrf)
-		return CMD_WARNING;
-
-	if (zvrf_id(zvrf) != VRF_DEFAULT && !vrf_is_backend_netns()) {
-		vty_out(vty,
-			"VRF subcommand does not make any sense in l3mdev based vrf's\n");
-		return CMD_WARNING;
-	}
-
-	if (strmatch(argv[0]->text, "no"))
-		return table_manager_range(vty, false, zvrf, NULL, NULL);
-
-	return table_manager_range(vty, true, zvrf, argv[3]->arg, argv[4]->arg);
-}
-
 #ifdef HAVE_SCRIPTING
 
 DEFUN(zebra_on_rib_process_script, zebra_on_rib_process_script_cmd,
@@ -4618,14 +4411,6 @@ void zebra_vty_init(void)
 	install_element(VIEW_NODE, &show_ip_rpf_addr_cmd);
 	install_element(VIEW_NODE, &show_ipv6_rpf_addr_cmd);
 
-	install_element(CONFIG_NODE, &ip_nht_default_route_cmd);
-	install_element(CONFIG_NODE, &no_ip_nht_default_route_cmd);
-	install_element(CONFIG_NODE, &ipv6_nht_default_route_cmd);
-	install_element(CONFIG_NODE, &no_ipv6_nht_default_route_cmd);
-	install_element(VRF_NODE, &ip_nht_default_route_cmd);
-	install_element(VRF_NODE, &no_ip_nht_default_route_cmd);
-	install_element(VRF_NODE, &ipv6_nht_default_route_cmd);
-	install_element(VRF_NODE, &no_ipv6_nht_default_route_cmd);
 	install_element(CONFIG_NODE, &rnh_hide_backups_cmd);
 
 	install_element(VIEW_NODE, &show_frr_cmd);
@@ -4677,19 +4462,12 @@ void zebra_vty_init(void)
 	install_element(CONFIG_NODE, &evpn_mh_neigh_holdtime_cmd);
 	install_element(CONFIG_NODE, &evpn_mh_startup_delay_cmd);
 	install_element(CONFIG_NODE, &evpn_mh_redirect_off_cmd);
-	install_element(CONFIG_NODE, &default_vrf_vni_mapping_cmd);
-	install_element(CONFIG_NODE, &no_default_vrf_vni_mapping_cmd);
-	install_element(VRF_NODE, &vrf_vni_mapping_cmd);
-	install_element(VRF_NODE, &no_vrf_vni_mapping_cmd);
 
 	install_element(VIEW_NODE, &show_dataplane_cmd);
 	install_element(VIEW_NODE, &show_dataplane_providers_cmd);
 	install_element(CONFIG_NODE, &zebra_dplane_queue_limit_cmd);
 	install_element(CONFIG_NODE, &no_zebra_dplane_queue_limit_cmd);
 
-	install_element(CONFIG_NODE, &ip_table_range_cmd);
-	install_element(VRF_NODE, &ip_table_range_cmd);
-
 #ifdef HAVE_NETLINK
 	install_element(CONFIG_NODE, &zebra_kernel_netlink_batch_tx_buf_cmd);
 	install_element(CONFIG_NODE, &no_zebra_kernel_netlink_batch_tx_buf_cmd);