Adding upstream version 6.1.0.upstream/6.1.0upstream

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

1 files changed, 1252 insertions, 0 deletions

diff --git a/tipc/link.c b/tipc/link.c
new file mode 100644
index 0000000..53f49c8
--- /dev/null
+++ b/tipc/link.c
@@ -0,0 +1,1252 @@
+/*
+ * link.c	TIPC link functionality.
+ *
+ *		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.
+ *
+ * Authors:	Richard Alpe <richard.alpe@ericsson.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include <linux/tipc_netlink.h>
+#include <linux/tipc.h>
+#include <linux/genetlink.h>
+#include <libmnl/libmnl.h>
+
+#include "mnl_utils.h"
+#include "cmdl.h"
+#include "msg.h"
+#include "link.h"
+#include "bearer.h"
+#include "utils.h"
+
+#define PRIORITY_STR "priority"
+#define TOLERANCE_STR "tolerance"
+#define WINDOW_STR "window"
+#define BROADCAST_STR "broadcast"
+
+static const char tipc_bclink_name[] = "broadcast-link";
+
+static int link_list_cb(const struct nlmsghdr *nlh, void *data)
+{
+	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
+	struct nlattr *info[TIPC_NLA_MAX + 1] = {};
+	struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1] = {};
+
+	mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
+	if (!info[TIPC_NLA_LINK])
+		return MNL_CB_ERROR;
+
+	mnl_attr_parse_nested(info[TIPC_NLA_LINK], parse_attrs, attrs);
+	if (!attrs[TIPC_NLA_LINK_NAME])
+		return MNL_CB_ERROR;
+
+	print_string(PRINT_FP, NULL, "%s: ",
+			     mnl_attr_get_str(attrs[TIPC_NLA_LINK_NAME]));
+	if (attrs[TIPC_NLA_LINK_UP])
+		print_string(PRINT_ANY,
+			 mnl_attr_get_str(attrs[TIPC_NLA_LINK_NAME]),"%s\n", "up");
+	else
+		print_string(PRINT_ANY,
+			 mnl_attr_get_str(attrs[TIPC_NLA_LINK_NAME]), "%s\n", "down");
+	return MNL_CB_OK;
+}
+
+static int cmd_link_list(struct nlmsghdr *nlh, const struct cmd *cmd,
+			 struct cmdl *cmdl, void *data)
+{
+	int err = 0;
+
+	if (help_flag) {
+		fprintf(stderr, "Usage: %s link list\n", cmdl->argv[0]);
+		return -EINVAL;
+	}
+
+	nlh = msg_init(TIPC_NL_LINK_GET);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		return -1;
+	}
+
+	new_json_obj(json);
+	open_json_object(NULL);
+	err = msg_dumpit(nlh, link_list_cb, NULL);
+	close_json_object();
+	delete_json_obj();
+	return err;
+}
+
+static int link_get_cb(const struct nlmsghdr *nlh, void *data)
+{
+	int *prop = data;
+	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
+	struct nlattr *info[TIPC_NLA_MAX + 1] = {};
+	struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1] = {};
+	struct nlattr *props[TIPC_NLA_PROP_MAX + 1] = {};
+
+	mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
+	if (!info[TIPC_NLA_LINK])
+		return MNL_CB_ERROR;
+
+	mnl_attr_parse_nested(info[TIPC_NLA_LINK], parse_attrs, attrs);
+	if (!attrs[TIPC_NLA_LINK_PROP])
+		return MNL_CB_ERROR;
+
+	mnl_attr_parse_nested(attrs[TIPC_NLA_LINK_PROP], parse_attrs, props);
+	if (!props[*prop])
+		return MNL_CB_ERROR;
+
+	new_json_obj(json);
+	open_json_object(NULL);
+	switch (*prop) {
+		case TIPC_NLA_PROP_PRIO:
+			print_uint(PRINT_ANY, PRIORITY_STR, "%u\n", mnl_attr_get_u32(props[*prop]));
+		break;
+		case TIPC_NLA_PROP_TOL:
+			print_uint(PRINT_ANY, TOLERANCE_STR, "%u\n", mnl_attr_get_u32(props[*prop]));
+		break;
+		case TIPC_NLA_PROP_WIN:
+			print_uint(PRINT_ANY, WINDOW_STR, "%u\n", mnl_attr_get_u32(props[*prop]));
+		break;
+		default:
+			break;
+	}
+	close_json_object();
+	delete_json_obj();
+	return MNL_CB_OK;
+}
+
+static int cmd_link_get_prop(struct nlmsghdr *nlh, const struct cmd *cmd,
+			     struct cmdl *cmdl, void *data)
+{
+	int prop;
+	struct nlattr *attrs;
+	struct opt *opt;
+	struct opt opts[] = {
+		{ "link",		OPT_KEYVAL,	NULL },
+		{ NULL }
+	};
+
+	if (strcmp(cmd->cmd, PRIORITY_STR) == 0)
+		prop = TIPC_NLA_PROP_PRIO;
+	else if ((strcmp(cmd->cmd, TOLERANCE_STR) == 0))
+		prop = TIPC_NLA_PROP_TOL;
+	else if ((strcmp(cmd->cmd, WINDOW_STR) == 0))
+		prop = TIPC_NLA_PROP_WIN;
+	else
+		return -EINVAL;
+
+	if (help_flag) {
+		(cmd->help)(cmdl);
+		return -EINVAL;
+	}
+
+	if (parse_opts(opts, cmdl) < 0)
+		return -EINVAL;
+
+	nlh = msg_init(TIPC_NL_LINK_GET);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		return -1;
+	}
+
+	opt = get_opt(opts, "link");
+	if (!opt) {
+		fprintf(stderr, "error, missing link\n");
+		return -EINVAL;
+	}
+	attrs = mnl_attr_nest_start(nlh, TIPC_NLA_LINK);
+	mnl_attr_put_strz(nlh, TIPC_NLA_LINK_NAME, opt->val);
+	mnl_attr_nest_end(nlh, attrs);
+
+	return msg_doit(nlh, link_get_cb, &prop);
+}
+
+static void cmd_link_get_help(struct cmdl *cmdl)
+{
+	fprintf(stderr, "Usage: %s link get PPROPERTY link LINK\n\n"
+		"PROPERTIES\n"
+		" tolerance             - Get link tolerance\n"
+		" priority              - Get link priority\n"
+		" window                - Get link window\n"
+		" broadcast             - Get link broadcast\n",
+		cmdl->argv[0]);
+}
+
+static int cmd_link_get_bcast_cb(const struct nlmsghdr *nlh, void *data)
+{
+	int *prop = data;
+	int prop_ratio = TIPC_NLA_PROP_BROADCAST_RATIO;
+	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
+	struct nlattr *info[TIPC_NLA_MAX + 1] = {};
+	struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1] = {};
+	struct nlattr *props[TIPC_NLA_PROP_MAX + 1] = {};
+	int bc_mode;
+
+	mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
+	if (!info[TIPC_NLA_LINK])
+		return MNL_CB_ERROR;
+
+	mnl_attr_parse_nested(info[TIPC_NLA_LINK], parse_attrs, attrs);
+	if (!attrs[TIPC_NLA_LINK_PROP])
+		return MNL_CB_ERROR;
+
+	mnl_attr_parse_nested(attrs[TIPC_NLA_LINK_PROP], parse_attrs, props);
+	if (!props[*prop])
+		return MNL_CB_ERROR;
+
+	bc_mode = mnl_attr_get_u32(props[*prop]);
+
+	new_json_obj(json);
+	open_json_object(NULL);
+	switch (bc_mode) {
+	case 0x1:
+		print_string(PRINT_ANY, "method", "%s\n", "BROADCAST");
+		break;
+	case 0x2:
+		print_string(PRINT_ANY, "method", "%s\n", "REPLICAST");
+		break;
+	case 0x4:
+		print_string(PRINT_ANY, "method", "%s", "AUTOSELECT");
+		close_json_object();
+		open_json_object(NULL);
+		print_uint(PRINT_ANY, "ratio", " ratio:%u\n",
+			   mnl_attr_get_u32(props[prop_ratio]));
+		break;
+	default:
+		print_string(PRINT_ANY, NULL, "UNKNOWN\n", NULL);
+		break;
+	}
+	close_json_object();
+	delete_json_obj();
+	return MNL_CB_OK;
+}
+
+static void cmd_link_get_bcast_help(struct cmdl *cmdl)
+{
+	fprintf(stderr, "Usage: %s link get PPROPERTY\n\n"
+		"PROPERTIES\n"
+		" broadcast             - Get link broadcast\n",
+		cmdl->argv[0]);
+}
+
+static int cmd_link_get_bcast(struct nlmsghdr *nlh, const struct cmd *cmd,
+			     struct cmdl *cmdl, void *data)
+{
+	int prop = TIPC_NLA_PROP_BROADCAST;
+	struct nlattr *attrs;
+
+	if (help_flag) {
+		(cmd->help)(cmdl);
+		return -EINVAL;
+	}
+
+	nlh = msg_init(TIPC_NL_LINK_GET);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		return -1;
+	}
+	attrs = mnl_attr_nest_start(nlh, TIPC_NLA_LINK);
+	/* Direct to broadcast-link setting */
+	mnl_attr_put_strz(nlh, TIPC_NLA_LINK_NAME, tipc_bclink_name);
+	mnl_attr_nest_end(nlh, attrs);
+	return msg_doit(nlh, cmd_link_get_bcast_cb, &prop);
+}
+
+static int cmd_link_get(struct nlmsghdr *nlh, const struct cmd *cmd,
+			struct cmdl *cmdl, void *data)
+{
+	const struct cmd cmds[] = {
+		{ PRIORITY_STR,	cmd_link_get_prop,	cmd_link_get_help },
+		{ TOLERANCE_STR,	cmd_link_get_prop,	cmd_link_get_help },
+		{ WINDOW_STR,	cmd_link_get_prop,	cmd_link_get_help },
+		{ BROADCAST_STR, cmd_link_get_bcast, cmd_link_get_bcast_help },
+		{ NULL }
+	};
+
+	return run_cmd(nlh, cmd, cmds, cmdl, NULL);
+}
+
+static void cmd_link_stat_reset_help(struct cmdl *cmdl)
+{
+	fprintf(stderr, "Usage: %s link stat reset link LINK\n\n", cmdl->argv[0]);
+}
+
+static int cmd_link_stat_reset(struct nlmsghdr *nlh, const struct cmd *cmd,
+			       struct cmdl *cmdl, void *data)
+{
+	char *link;
+	struct opt *opt;
+	struct nlattr *nest;
+	struct opt opts[] = {
+		{ "link",		OPT_KEYVAL,	NULL },
+		{ NULL }
+	};
+
+	if (help_flag) {
+		(cmd->help)(cmdl);
+		return -EINVAL;
+	}
+
+	if (parse_opts(opts, cmdl) != 1) {
+		(cmd->help)(cmdl);
+		return -EINVAL;
+	}
+
+	nlh = msg_init(TIPC_NL_LINK_RESET_STATS);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		return -1;
+	}
+
+	opt = get_opt(opts, "link");
+	if (!opt) {
+		fprintf(stderr, "error, missing link\n");
+		return -EINVAL;
+	}
+	link = opt->val;
+
+	nest = mnl_attr_nest_start(nlh, TIPC_NLA_LINK);
+	mnl_attr_put_strz(nlh, TIPC_NLA_LINK_NAME, link);
+	mnl_attr_nest_end(nlh, nest);
+
+	return msg_doit(nlh, NULL, NULL);
+}
+
+static uint32_t perc(uint32_t count, uint32_t total)
+{
+	return (count * 100 + (total / 2)) / total;
+}
+
+static int _show_link_stat(const char *name, struct nlattr *attrs[],
+			   struct nlattr *prop[], struct nlattr *stats[])
+{
+	uint32_t proft;
+
+	open_json_object(NULL);
+
+	print_string(PRINT_ANY, "link", "Link <%s>\n", name);
+	print_string(PRINT_JSON, "state", NULL, NULL);
+	open_json_array(PRINT_JSON, NULL);
+	if (attrs[TIPC_NLA_LINK_ACTIVE])
+		print_string(PRINT_ANY, NULL, "  %s", "ACTIVE");
+	else if (attrs[TIPC_NLA_LINK_UP])
+		print_string(PRINT_ANY, NULL, "  %s", "STANDBY");
+	else
+		print_string(PRINT_ANY, NULL, "  %s", "DEFUNCT");
+	close_json_array(PRINT_JSON, NULL);
+
+	print_uint(PRINT_ANY, "mtu", "  MTU:%u",
+			   mnl_attr_get_u32(attrs[TIPC_NLA_LINK_MTU]));
+	print_uint(PRINT_ANY, PRIORITY_STR, "  Priority:%u",
+			   mnl_attr_get_u32(prop[TIPC_NLA_PROP_PRIO]));
+	print_uint(PRINT_ANY, TOLERANCE_STR, "  Tolerance:%u ms",
+			   mnl_attr_get_u32(prop[TIPC_NLA_PROP_TOL]));
+	print_uint(PRINT_ANY, WINDOW_STR, "  Window:%u packets\n",
+			   mnl_attr_get_u32(prop[TIPC_NLA_PROP_WIN]));
+
+	open_json_object("rx packets");
+	print_uint(PRINT_ANY, "rx packets", "  RX packets:%u",
+			   mnl_attr_get_u32(attrs[TIPC_NLA_LINK_RX]) -
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_INFO]));
+	print_uint(PRINT_ANY, "fragments", " fragments:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]));
+	print_uint(PRINT_ANY, "fragmented", "/%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]));
+	print_uint(PRINT_ANY, "bundles", " bundles:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]));
+	print_uint(PRINT_ANY, "bundled", "/%u\n",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
+	close_json_object();
+
+	open_json_object("tx packets");
+	print_uint(PRINT_ANY, "tx packets", "  TX packets:%u",
+			   mnl_attr_get_u32(attrs[TIPC_NLA_LINK_TX]) -
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_INFO]));
+	print_uint(PRINT_ANY, "fragments", " fragments:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]));
+	print_uint(PRINT_ANY, "fragmented", "/%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]));
+	print_uint(PRINT_ANY, "bundles", " bundles:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]));
+	print_uint(PRINT_ANY, "bundled", "/%u\n",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
+	close_json_object();
+
+	proft = mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]);
+	print_uint(PRINT_ANY, "tx profile sample", "  TX profile sample:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_CNT]));
+	print_uint(PRINT_ANY, "packets average", " packets average:%u octets\n",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_TOT]) / proft);
+
+	print_uint(PRINT_ANY, "0-64", "  0-64:%u%%",
+			   perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P0]), proft));
+	print_uint(PRINT_ANY, "-256", " -256:%u%%",
+			   perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P1]), proft));
+	print_uint(PRINT_ANY, "-1024", " -1024:%u%%",
+			   perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P2]), proft));
+	print_uint(PRINT_ANY, "-4096", " -4096:%u%%",
+			   perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P3]), proft));
+	print_uint(PRINT_ANY, "-16384", " -16384:%u%%",
+			   perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P4]), proft));
+	print_uint(PRINT_ANY, "-32768", " -32768:%u%%",
+			   perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P5]), proft));
+	print_uint(PRINT_ANY, "-66000", " -66000:%u%%\n",
+			   perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P6]), proft));
+
+	open_json_object("rx states");
+	print_uint(PRINT_ANY, "rx states", "  RX states:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_STATES]));
+	print_uint(PRINT_ANY, "probes", " probes:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_PROBES]));
+	print_uint(PRINT_ANY, "naks", " naks:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]));
+	print_uint(PRINT_ANY, "defs", " defs:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]));
+	print_uint(PRINT_ANY, "dups", " dups:%u\n",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
+	close_json_object();
+
+	open_json_object("tx states");
+	print_uint(PRINT_ANY, "tx states", "  TX states:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_STATES]));
+	print_uint(PRINT_ANY, "probes", " probes:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_PROBES]));
+	print_uint(PRINT_ANY, "naks", " naks:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]));
+	print_uint(PRINT_ANY, "acks", " acks:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]));
+	print_uint(PRINT_ANY, "retrans", " retrans:%u\n",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
+	close_json_object();
+
+	print_uint(PRINT_ANY, "congestion link", "  Congestion link:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]));
+	print_uint(PRINT_ANY, "send queue max", "  Send queue max:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]));
+	print_uint(PRINT_ANY, "avg", " avg:%u\n\n",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
+
+	close_json_object();
+	return MNL_CB_OK;
+}
+
+static int _show_bc_link_stat(const char *name, struct nlattr *prop[],
+			   struct nlattr *stats[])
+{
+	open_json_object(NULL);
+	print_string(PRINT_ANY, "link", "Link <%s>\n", name);
+	print_uint(PRINT_ANY, WINDOW_STR, "  Window:%u packets\n",
+			   mnl_attr_get_u32(prop[TIPC_NLA_PROP_WIN]));
+
+	open_json_object("rx packets");
+	print_uint(PRINT_ANY, "rx packets", "  RX packets:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_INFO]));
+	print_uint(PRINT_ANY, "fragments", " fragments:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]));
+	print_uint(PRINT_ANY, "fragmented", "/%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]));
+	print_uint(PRINT_ANY, "bundles", " bundles:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]));
+	print_uint(PRINT_ANY, "bundled", "/%u\n",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
+	close_json_object();
+
+	open_json_object("tx packets");
+	print_uint(PRINT_ANY, "tx packets", "  TX packets:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_INFO]));
+	print_uint(PRINT_ANY, "fragments", " fragments:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]));
+	print_uint(PRINT_ANY, "fragmented", "/%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]));
+	print_uint(PRINT_ANY, "bundles", " bundles:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]));
+	print_uint(PRINT_ANY, "bundled", "/%u\n",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
+	close_json_object();
+
+	open_json_object("rx naks");
+	print_uint(PRINT_ANY, "rx naks", "  RX naks:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]));
+	print_uint(PRINT_ANY, "defs",  " defs:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]));
+	print_uint(PRINT_ANY, "dups",  " dups:%u\n",
+		   mnl_attr_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
+	close_json_object();
+
+	open_json_object("tx naks");
+	print_uint(PRINT_ANY, "tx naks", "  TX naks:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]));
+	print_uint(PRINT_ANY, "acks",  " acks:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]));
+	print_uint(PRINT_ANY, "retrans",  " retrans:%u\n",
+		   mnl_attr_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
+	close_json_object();
+
+	print_uint(PRINT_ANY, "congestion link", "  Congestion link:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]));
+	print_uint(PRINT_ANY, "send queue max", "  Send queue max:%u",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]));
+	print_uint(PRINT_ANY, "avg", " avg:%u\n\n",
+			   mnl_attr_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
+	close_json_object();
+
+	return MNL_CB_OK;
+}
+
+static int link_stat_show_cb(const struct nlmsghdr *nlh, void *data)
+{
+	const char *name;
+	const char *link = data;
+	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
+	struct nlattr *info[TIPC_NLA_MAX + 1] = {};
+	struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1] = {};
+	struct nlattr *prop[TIPC_NLA_PROP_MAX + 1] = {};
+	struct nlattr *stats[TIPC_NLA_STATS_MAX + 1] = {};
+
+	mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
+	if (!info[TIPC_NLA_LINK])
+		return MNL_CB_ERROR;
+
+	mnl_attr_parse_nested(info[TIPC_NLA_LINK], parse_attrs, attrs);
+	if (!attrs[TIPC_NLA_LINK_NAME] || !attrs[TIPC_NLA_LINK_PROP] ||
+	    !attrs[TIPC_NLA_LINK_STATS])
+		return MNL_CB_ERROR;
+
+	mnl_attr_parse_nested(attrs[TIPC_NLA_LINK_PROP], parse_attrs, prop);
+	mnl_attr_parse_nested(attrs[TIPC_NLA_LINK_STATS], parse_attrs, stats);
+
+	name = mnl_attr_get_str(attrs[TIPC_NLA_LINK_NAME]);
+
+	/* If a link is passed, skip all but that link.
+	 * Support a substring matching as well.
+	 */
+	if (link && !strstr(name, link))
+		return MNL_CB_OK;
+
+	if (attrs[TIPC_NLA_LINK_BROADCAST]) {
+		return _show_bc_link_stat(name, prop, stats);
+	}
+
+	return _show_link_stat(name, attrs, prop, stats);
+}
+
+static void cmd_link_stat_show_help(struct cmdl *cmdl)
+{
+	fprintf(stderr, "Usage: %s link stat show [ link { LINK | SUBSTRING | all } ]\n",
+		cmdl->argv[0]);
+}
+
+static int cmd_link_stat_show(struct nlmsghdr *nlh, const struct cmd *cmd,
+			      struct cmdl *cmdl, void *data)
+{
+	char *link = NULL;
+	struct opt *opt;
+	struct opt opts[] = {
+		{ "link",		OPT_KEYVAL,	NULL },
+		{ NULL }
+	};
+	struct nlattr *attrs;
+	int err = 0;
+
+	if (help_flag) {
+		(cmd->help)(cmdl);
+		return -EINVAL;
+	}
+
+	nlh = msg_init(TIPC_NL_LINK_GET);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		return -1;
+	}
+
+	if (parse_opts(opts, cmdl) < 0)
+		return -EINVAL;
+
+	opt = get_opt(opts, "link");
+	if (opt) {
+		if (strcmp(opt->val, "all"))
+			link = opt->val;
+		/* Set the flag to dump all bc links */
+		attrs = mnl_attr_nest_start(nlh, TIPC_NLA_LINK);
+		mnl_attr_put(nlh, TIPC_NLA_LINK_BROADCAST, 0, NULL);
+		mnl_attr_nest_end(nlh, attrs);
+	}
+
+	new_json_obj(json);
+	err = msg_dumpit(nlh, link_stat_show_cb, link);
+	delete_json_obj();
+	return err;
+}
+
+static void cmd_link_stat_help(struct cmdl *cmdl)
+{
+	fprintf(stderr, "Usage: %s link stat COMMAND [ARGS]\n\n"
+		"COMMANDS:\n"
+		" reset                 - Reset link statistics for link\n"
+		" show                  - Get link priority\n",
+		cmdl->argv[0]);
+}
+
+static int cmd_link_stat(struct nlmsghdr *nlh, const struct cmd *cmd,
+			 struct cmdl *cmdl, void *data)
+{
+	const struct cmd cmds[] = {
+		{ "reset",	cmd_link_stat_reset,	cmd_link_stat_reset_help },
+		{ "show",	cmd_link_stat_show,	cmd_link_stat_show_help },
+		{ NULL }
+	};
+
+	return run_cmd(nlh, cmd, cmds, cmdl, NULL);
+}
+
+static void cmd_link_set_help(struct cmdl *cmdl)
+{
+	fprintf(stderr, "Usage: %s link set PPROPERTY link LINK\n\n"
+		"PROPERTIES\n"
+		" tolerance TOLERANCE   - Set link tolerance\n"
+		" priority PRIORITY     - Set link priority\n"
+		" window WINDOW         - Set link window\n"
+		" broadcast BROADCAST   - Set link broadcast\n",
+		cmdl->argv[0]);
+}
+
+static int cmd_link_set_prop(struct nlmsghdr *nlh, const struct cmd *cmd,
+			     struct cmdl *cmdl, void *data)
+{
+	int val;
+	int prop;
+	struct nlattr *props;
+	struct nlattr *attrs;
+	struct opt *opt;
+	struct opt opts[] = {
+		{ "link",		OPT_KEYVAL,	NULL },
+		{ NULL }
+	};
+
+	if (strcmp(cmd->cmd, PRIORITY_STR) == 0)
+		prop = TIPC_NLA_PROP_PRIO;
+	else if ((strcmp(cmd->cmd, TOLERANCE_STR) == 0))
+		prop = TIPC_NLA_PROP_TOL;
+	else if ((strcmp(cmd->cmd, WINDOW_STR) == 0))
+		prop = TIPC_NLA_PROP_WIN;
+	else
+		return -EINVAL;
+
+	if (help_flag) {
+		(cmd->help)(cmdl);
+		return -EINVAL;
+	}
+
+	if (cmdl->optind >= cmdl->argc) {
+		fprintf(stderr, "error, missing value\n");
+		return -EINVAL;
+	}
+	val = atoi(shift_cmdl(cmdl));
+
+	if (parse_opts(opts, cmdl) < 0)
+		return -EINVAL;
+
+	nlh = msg_init(TIPC_NL_LINK_SET);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		return -1;
+	}
+	attrs = mnl_attr_nest_start(nlh, TIPC_NLA_LINK);
+
+	opt = get_opt(opts, "link");
+	if (!opt) {
+		fprintf(stderr, "error, missing link\n");
+		return -EINVAL;
+	}
+	mnl_attr_put_strz(nlh, TIPC_NLA_LINK_NAME, opt->val);
+
+	props = mnl_attr_nest_start(nlh, TIPC_NLA_LINK_PROP);
+	mnl_attr_put_u32(nlh, prop, val);
+	mnl_attr_nest_end(nlh, props);
+
+	mnl_attr_nest_end(nlh, attrs);
+
+	return msg_doit(nlh, link_get_cb, &prop);
+}
+
+static void cmd_link_set_bcast_help(struct cmdl *cmdl)
+{
+	fprintf(stderr, "Usage: %s link set broadcast PROPERTY\n\n"
+		"PROPERTIES\n"
+		" BROADCAST         - Forces all multicast traffic to be\n"
+		"                     transmitted via broadcast only,\n"
+		"                     irrespective of cluster size and number\n"
+		"                     of destinations\n\n"
+		" REPLICAST         - Forces all multicast traffic to be\n"
+		"                     transmitted via replicast only,\n"
+		"                     irrespective of cluster size and number\n"
+		"                     of destinations\n\n"
+		" AUTOSELECT        - Auto switching to broadcast or replicast\n"
+		"                     depending on cluster size and destination\n"
+		"                     node number\n\n"
+		" ratio SIZE        - Set the AUTOSELECT criteria, percentage of\n"
+		"                     destination nodes vs cluster size\n\n",
+		cmdl->argv[0]);
+}
+
+static int cmd_link_set_bcast(struct nlmsghdr *nlh, const struct cmd *cmd,
+			     struct cmdl *cmdl, void *data)
+{
+	struct nlattr *props;
+	struct nlattr *attrs;
+	struct opt *opt;
+	struct opt opts[] = {
+		{ "BROADCAST",	OPT_KEY, NULL },
+		{ "REPLICAST",	OPT_KEY, NULL },
+		{ "AUTOSELECT",	OPT_KEY, NULL },
+		{ "ratio",	OPT_KEYVAL,	NULL },
+		{ NULL }
+	};
+	int method = 0;
+
+	if (help_flag) {
+		(cmd->help)(cmdl);
+		return -EINVAL;
+	}
+
+	if (parse_opts(opts, cmdl) < 0)
+		return -EINVAL;
+
+	for (opt = opts; opt->key; opt++)
+		if (opt->val)
+			break;
+
+	if (!opt || !opt->key) {
+		(cmd->help)(cmdl);
+		return -EINVAL;
+	}
+
+	nlh = msg_init(TIPC_NL_LINK_SET);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		return -1;
+	}
+
+	attrs = mnl_attr_nest_start(nlh, TIPC_NLA_LINK);
+	/* Direct to broadcast-link setting */
+	mnl_attr_put_strz(nlh, TIPC_NLA_LINK_NAME, tipc_bclink_name);
+	props = mnl_attr_nest_start(nlh, TIPC_NLA_LINK_PROP);
+
+	if (get_opt(opts, "BROADCAST"))
+		method = 0x1;
+	else if (get_opt(opts, "REPLICAST"))
+		method = 0x2;
+	else if (get_opt(opts, "AUTOSELECT"))
+		method = 0x4;
+
+	opt = get_opt(opts, "ratio");
+	if (!method && !opt) {
+		(cmd->help)(cmdl);
+		return -EINVAL;
+	}
+
+	if (method)
+		mnl_attr_put_u32(nlh, TIPC_NLA_PROP_BROADCAST, method);
+
+	if (opt)
+		mnl_attr_put_u32(nlh, TIPC_NLA_PROP_BROADCAST_RATIO,
+				 atoi(opt->val));
+
+	mnl_attr_nest_end(nlh, props);
+	mnl_attr_nest_end(nlh, attrs);
+	return msg_doit(nlh, NULL, NULL);
+}
+
+static int cmd_link_set(struct nlmsghdr *nlh, const struct cmd *cmd,
+			struct cmdl *cmdl, void *data)
+{
+	const struct cmd cmds[] = {
+		{ PRIORITY_STR,	cmd_link_set_prop,	cmd_link_set_help },
+		{ TOLERANCE_STR,	cmd_link_set_prop,	cmd_link_set_help },
+		{ WINDOW_STR,	cmd_link_set_prop,	cmd_link_set_help },
+		{ BROADCAST_STR, cmd_link_set_bcast, cmd_link_set_bcast_help },
+		{ NULL }
+	};
+
+	return run_cmd(nlh, cmd, cmds, cmdl, NULL);
+}
+
+static int cmd_link_mon_set_prop(struct nlmsghdr *nlh, const struct cmd *cmd,
+				 struct cmdl *cmdl, void *data)
+{
+	int size;
+	struct nlattr *attrs;
+
+	if (cmdl->argc != cmdl->optind + 1) {
+		fprintf(stderr, "error, missing value\n");
+		return -EINVAL;
+	}
+	size = atoi(shift_cmdl(cmdl));
+
+	nlh = msg_init(TIPC_NL_MON_SET);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		return -1;
+	}
+	attrs = mnl_attr_nest_start(nlh, TIPC_NLA_MON);
+
+	mnl_attr_put_u32(nlh, TIPC_NLA_MON_ACTIVATION_THRESHOLD, size);
+
+	mnl_attr_nest_end(nlh, attrs);
+
+	return msg_doit(nlh, NULL, NULL);
+}
+
+static int link_mon_summary_cb(const struct nlmsghdr *nlh, void *data)
+{
+	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
+	struct nlattr *info[TIPC_NLA_MAX + 1] = {};
+	struct nlattr *attrs[TIPC_NLA_MON_MAX + 1] = {};
+
+	mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
+	if (!info[TIPC_NLA_MON])
+		return MNL_CB_ERROR;
+
+	mnl_attr_parse_nested(info[TIPC_NLA_MON], parse_attrs, attrs);
+
+	open_json_object(NULL);
+	print_string(PRINT_ANY, "bearer", "\nbearer %s\n",
+		mnl_attr_get_str(attrs[TIPC_NLA_MON_BEARER_NAME]));
+
+	print_uint(PRINT_ANY, "table_generation", "    table_generation %u\n",
+	       mnl_attr_get_u32(attrs[TIPC_NLA_MON_LISTGEN]));
+	print_uint(PRINT_ANY, "cluster_size", "    cluster_size %u\n",
+		mnl_attr_get_u32(attrs[TIPC_NLA_MON_PEERCNT]));
+	print_string(PRINT_ANY, "algorithm", "    algorithm %s\n",
+		attrs[TIPC_NLA_MON_ACTIVE] ? "overlapping-ring" : "full-mesh");
+	close_json_object();
+
+	return MNL_CB_OK;
+}
+
+static int cmd_link_mon_summary(struct nlmsghdr *nlh, const struct cmd *cmd,
+				struct cmdl *cmdl, void *data)
+{
+	int err = 0;
+
+	if (help_flag) {
+		fprintf(stderr,	"Usage: %s monitor summary\n", cmdl->argv[0]);
+		return -EINVAL;
+	}
+
+	nlh = msg_init(TIPC_NL_MON_GET);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		return -1;
+	}
+
+	new_json_obj(json);
+	err = msg_dumpit(nlh, link_mon_summary_cb, NULL);
+	delete_json_obj();
+
+	return err;
+}
+
+#define STATUS_WIDTH 7
+#define MAX_NODE_WIDTH 14 /* 255.4095.4095 */
+#define MAX_DOM_GEN_WIDTH 11 /* 65535 */
+#define DIRECTLY_MON_WIDTH 10
+
+#define APPL_NODE_STATUS_WIDTH 5
+
+static int map_get(uint64_t up_map, int i)
+{
+	return (up_map & (1 << i)) >> i;
+}
+
+/* print the applied members, since we know the the members
+ * are listed in ascending order, we print only the state
+ */
+static void link_mon_print_applied(uint16_t applied, uint64_t up_map)
+{
+	int i;
+
+	open_json_array(PRINT_JSON, "applied_node_status");
+	for (i = 0; i < applied; i++) {
+		char state_str[2] = {0};
+
+		/* print the delimiter for every -n- entry */
+		if (i && !(i % APPL_NODE_STATUS_WIDTH))
+			print_string(PRINT_FP, NULL, "%s", ",");
+
+		sprintf(state_str, "%c", map_get(up_map, i) ? 'U' : 'D');
+		print_string(PRINT_ANY, NULL, "%s", state_str);
+	}
+	close_json_array(PRINT_JSON, "applied_node_status");
+}
+
+/* print the non applied members, since we don't know
+ * the members, we print them along with the state
+ */
+static void link_mon_print_non_applied(uint16_t applied, uint16_t member_cnt,
+				       uint64_t up_map,  uint32_t *members)
+{
+	int i;
+	char state;
+
+	open_json_array(PRINT_JSON, "[non_applied_node:status]");
+	print_string(PRINT_FP, NULL, " %s", "[");
+	for (i = applied; i < member_cnt; i++) {
+		char addr_str[16];
+		char full_state[17] = {0};
+
+		/* print the delimiter for every entry */
+		if (i != applied)
+			print_string(PRINT_FP, NULL, "%s", ",");
+
+		sprintf(addr_str, "%x:", members[i]);
+		state = map_get(up_map, i) ? 'U' : 'D';
+		sprintf(full_state, "%s%c", addr_str, state);
+		print_string(PRINT_ANY, NULL, "%s", full_state);
+	}
+	print_string(PRINT_FP, NULL, "%s", "]");
+	close_json_array(PRINT_JSON, "[non_applied_node:status]");
+}
+
+static void link_mon_print_peer_state(const uint32_t addr, const char *status,
+				      const char *monitored,
+				      const uint32_t dom_gen)
+{
+	char addr_str[16];
+
+	sprintf(addr_str, "%u.%u.%u", tipc_zone(addr), tipc_cluster(addr),
+		tipc_node(addr));
+	if (is_json_context()) {
+		print_string(PRINT_JSON, "node", NULL, addr_str);
+		print_string(PRINT_JSON, "status", NULL, status);
+		print_string(PRINT_JSON, "monitored", NULL, monitored);
+		print_uint(PRINT_JSON, "generation", NULL, dom_gen);
+	} else {
+		printf("%-*s", MAX_NODE_WIDTH, addr_str);
+		printf("%-*s", STATUS_WIDTH, status);
+		printf("%-*s", DIRECTLY_MON_WIDTH, monitored);
+		printf("%-*u", MAX_DOM_GEN_WIDTH, dom_gen);
+	}
+}
+
+static int link_mon_peer_list_cb(const struct nlmsghdr *nlh, void *data)
+{
+	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
+	struct nlattr *attrs[TIPC_NLA_MON_PEER_MAX + 1] = {};
+	struct nlattr *info[TIPC_NLA_MAX + 1] = {};
+	uint16_t member_cnt;
+	uint32_t applied;
+	uint32_t dom_gen;
+	uint64_t up_map;
+	char status[16];
+	char monitored[16];
+
+	mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
+	if (!info[TIPC_NLA_MON_PEER])
+		return MNL_CB_ERROR;
+
+	open_json_object(NULL);
+	mnl_attr_parse_nested(info[TIPC_NLA_MON_PEER], parse_attrs, attrs);
+
+	(attrs[TIPC_NLA_MON_PEER_LOCAL] || attrs[TIPC_NLA_MON_PEER_HEAD]) ?
+		strcpy(monitored, "direct") :
+		strcpy(monitored, "indirect");
+
+	attrs[TIPC_NLA_MON_PEER_UP] ?
+		strcpy(status, "up") :
+		strcpy(status, "down");
+
+	dom_gen = attrs[TIPC_NLA_MON_PEER_DOMGEN] ?
+		mnl_attr_get_u32(attrs[TIPC_NLA_MON_PEER_DOMGEN]) : 0;
+
+	link_mon_print_peer_state(mnl_attr_get_u32(attrs[TIPC_NLA_MON_PEER_ADDR]),
+				  status, monitored, dom_gen);
+
+	applied = mnl_attr_get_u32(attrs[TIPC_NLA_MON_PEER_APPLIED]);
+
+	if (!applied)
+		goto exit;
+
+	up_map = mnl_attr_get_u64(attrs[TIPC_NLA_MON_PEER_UPMAP]);
+
+	member_cnt = mnl_attr_get_payload_len(attrs[TIPC_NLA_MON_PEER_MEMBERS]);
+
+	/* each tipc address occupies 4 bytes of payload, hence compensate it */
+	member_cnt /= sizeof(uint32_t);
+
+	link_mon_print_applied(applied, up_map);
+
+	link_mon_print_non_applied(applied, member_cnt, up_map,
+				   mnl_attr_get_payload(attrs[TIPC_NLA_MON_PEER_MEMBERS]));
+
+exit:
+	print_string(PRINT_FP, NULL, "\n", "");
+
+	close_json_object();
+	return MNL_CB_OK;
+}
+
+static int link_mon_peer_list(uint32_t mon_ref)
+{
+	struct mnlu_gen_socket link_nlg;
+	struct nlmsghdr *nlh;
+	struct nlattr *nest;
+	int err = 0;
+
+	err = mnlu_gen_socket_open(&link_nlg, TIPC_GENL_V2_NAME,
+				   TIPC_GENL_V2_VERSION);
+	if (err)
+		return -1;
+	nlh = mnlu_gen_socket_cmd_prepare(&link_nlg, TIPC_NL_MON_PEER_GET,
+					  NLM_F_REQUEST | NLM_F_DUMP);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		mnlu_gen_socket_close(&link_nlg);
+		return -1;
+	}
+
+	nest = mnl_attr_nest_start(nlh, TIPC_NLA_MON);
+	mnl_attr_put_u32(nlh, TIPC_NLA_MON_REF, mon_ref);
+	mnl_attr_nest_end(nlh, nest);
+
+	err = mnlu_gen_socket_sndrcv(&link_nlg, nlh, link_mon_peer_list_cb,
+				     NULL);
+	mnlu_gen_socket_close(&link_nlg);
+	return err;
+}
+
+static int link_mon_list_cb(const struct nlmsghdr *nlh, void *data)
+{
+	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
+	struct nlattr *info[TIPC_NLA_MAX + 1] = {};
+	struct nlattr *attrs[TIPC_NLA_MON_MAX + 1] = {};
+	char *req_bearer = data;
+	const char *bname;
+	const char title[] =
+	  "node          status monitored generation applied_node_status [non_applied_node:status]";
+
+	mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
+	if (!info[TIPC_NLA_MON])
+		return MNL_CB_ERROR;
+
+	mnl_attr_parse_nested(info[TIPC_NLA_MON], parse_attrs, attrs);
+
+	bname = mnl_attr_get_str(attrs[TIPC_NLA_MON_BEARER_NAME]);
+
+	if (*req_bearer && (strcmp(req_bearer, bname) != 0))
+		return MNL_CB_OK;
+
+	open_json_object(NULL);
+	print_string(PRINT_ANY, "bearer", "\nbearer %s\n", bname);
+	print_string(PRINT_FP, NULL, "%s\n", title);
+
+	open_json_array(PRINT_JSON, bname);
+	if (mnl_attr_get_u32(attrs[TIPC_NLA_MON_PEERCNT]))
+		link_mon_peer_list(mnl_attr_get_u32(attrs[TIPC_NLA_MON_REF]));
+	close_json_array(PRINT_JSON, bname);
+
+	close_json_object();
+	return MNL_CB_OK;
+}
+
+static void cmd_link_mon_list_help(struct cmdl *cmdl)
+{
+	fprintf(stderr, "Usage: %s monitor list [ media MEDIA ARGS...]\n\n",
+		cmdl->argv[0]);
+	print_bearer_media();
+}
+
+static void cmd_link_mon_list_l2_help(struct cmdl *cmdl, char *media)
+{
+	fprintf(stderr,
+		"Usage: %s monitor list media %s device DEVICE [OPTIONS]\n",
+		cmdl->argv[0], media);
+}
+
+static void cmd_link_mon_list_udp_help(struct cmdl *cmdl, char *media)
+{
+	fprintf(stderr,
+		"Usage: %s monitor list media udp name NAME\n\n",
+		cmdl->argv[0]);
+}
+
+static int cmd_link_mon_list(struct nlmsghdr *nlh, const struct cmd *cmd,
+			     struct cmdl *cmdl, void *data)
+{
+	char bname[TIPC_MAX_BEARER_NAME] = {0};
+	struct opt opts[] = {
+		{ "media",	OPT_KEYVAL,	NULL },
+		{ "device",	OPT_KEYVAL,	NULL },
+		{ "name",	OPT_KEYVAL,	NULL },
+		{ NULL }
+	};
+	struct tipc_sup_media sup_media[] = {
+		{ "udp",        "name",         cmd_link_mon_list_udp_help},
+		{ "eth",        "device",       cmd_link_mon_list_l2_help },
+		{ "ib",         "device",       cmd_link_mon_list_l2_help },
+		{ NULL, },
+	};
+
+	int err;
+
+	if (parse_opts(opts, cmdl) < 0)
+		return -EINVAL;
+
+	if (get_opt(opts, "media")) {
+		err = cmd_get_unique_bearer_name(cmd, cmdl, opts, bname,
+						 sup_media);
+		if (err)
+			return err;
+	}
+
+	if (help_flag) {
+		cmd->help(cmdl);
+		return -EINVAL;
+	}
+
+	nlh = msg_init(TIPC_NL_MON_GET);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		return -1;
+	}
+
+	new_json_obj(json);
+	err = msg_dumpit(nlh, link_mon_list_cb, bname);
+	delete_json_obj();
+	return err;
+}
+
+static void cmd_link_mon_set_help(struct cmdl *cmdl)
+{
+	fprintf(stderr, "Usage: %s monitor set PPROPERTY\n\n"
+		"PROPERTIES\n"
+		" threshold SIZE	- Set monitor activation threshold\n",
+		cmdl->argv[0]);
+}
+
+static int cmd_link_mon_set(struct nlmsghdr *nlh, const struct cmd *cmd,
+			    struct cmdl *cmdl, void *data)
+{
+	const struct cmd cmds[] = {
+		{ "threshold",	cmd_link_mon_set_prop,	NULL },
+		{ NULL }
+	};
+
+	return run_cmd(nlh, cmd, cmds, cmdl, NULL);
+}
+
+static void cmd_link_mon_get_help(struct cmdl *cmdl)
+{
+	fprintf(stderr, "Usage: %s monitor get PPROPERTY\n\n"
+		"PROPERTIES\n"
+		" threshold	- Get monitor activation threshold\n",
+		cmdl->argv[0]);
+}
+
+static int link_mon_get_cb(const struct nlmsghdr *nlh, void *data)
+{
+	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
+	struct nlattr *info[TIPC_NLA_MAX + 1] = {};
+	struct nlattr *attrs[TIPC_NLA_MON_MAX + 1] = {};
+
+	mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
+	if (!info[TIPC_NLA_MON])
+		return MNL_CB_ERROR;
+
+	mnl_attr_parse_nested(info[TIPC_NLA_MON], parse_attrs, attrs);
+	if (!attrs[TIPC_NLA_MON_ACTIVATION_THRESHOLD])
+		return MNL_CB_ERROR;
+
+	new_json_obj(json);
+	print_uint(PRINT_ANY, "threshold", "%u\n",
+			   mnl_attr_get_u32(attrs[TIPC_NLA_MON_ACTIVATION_THRESHOLD]));
+	delete_json_obj();
+
+	return MNL_CB_OK;
+}
+
+static int cmd_link_mon_get_prop(struct nlmsghdr *nlh, const struct cmd *cmd,
+				 struct cmdl *cmdl, void *data)
+{
+
+	nlh = msg_init(TIPC_NL_MON_GET);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		return -1;
+	}
+
+	return msg_doit(nlh,	link_mon_get_cb,	NULL);
+}
+
+static int cmd_link_mon_get(struct nlmsghdr *nlh, const struct cmd *cmd,
+			    struct cmdl *cmdl, void *data)
+{
+	const struct cmd cmds[] = {
+		{ "threshold",	cmd_link_mon_get_prop,	NULL},
+		{ NULL }
+	};
+
+	return run_cmd(nlh, cmd, cmds, cmdl, NULL);
+}
+
+static void cmd_link_mon_help(struct cmdl *cmdl)
+{
+	fprintf(stderr,
+		"Usage: %s montior COMMAND [ARGS] ...\n\n"
+		"COMMANDS\n"
+		" set			- Set monitor properties\n"
+		" get			- Get monitor properties\n"
+		" list			- List all cluster members\n"
+		" summary		- Show local node monitor summary\n",
+		cmdl->argv[0]);
+}
+
+static int cmd_link_mon(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl,
+			void *data)
+{
+	const struct cmd cmds[] = {
+		{ "set",	cmd_link_mon_set,	cmd_link_mon_set_help },
+		{ "get",	cmd_link_mon_get,	cmd_link_mon_get_help },
+		{ "list",	cmd_link_mon_list,	cmd_link_mon_list_help },
+		{ "summary",	cmd_link_mon_summary,	NULL },
+		{ NULL }
+	};
+
+	return run_cmd(nlh, cmd, cmds, cmdl, NULL);
+}
+
+void cmd_link_help(struct cmdl *cmdl)
+{
+	fprintf(stderr,
+		"Usage: %s link COMMAND [ARGS] ...\n"
+		"\n"
+		"COMMANDS\n"
+		" list                  - List links\n"
+		" get                   - Get various link properties\n"
+		" set                   - Set various link properties\n"
+		" statistics            - Show or reset statistics\n"
+		" monitor               - Show or set link supervision\n",
+		cmdl->argv[0]);
+}
+
+int cmd_link(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl,
+	     void *data)
+{
+	const struct cmd cmds[] = {
+		{ "get",	cmd_link_get,	cmd_link_get_help },
+		{ "list",	cmd_link_list,	NULL },
+		{ "set",	cmd_link_set,	cmd_link_set_help },
+		{ "statistics", cmd_link_stat,	cmd_link_stat_help },
+		{ "monitor",	cmd_link_mon,	cmd_link_mon_help },
+		{ NULL }
+	};
+
+	return run_cmd(nlh, cmd, cmds, cmdl, NULL);
+}