devlink/devlink.c

/*
 * devlink.c	Devlink tool
 *
 *              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:     Jiri Pirko <jiri@mellanox.com>
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <stdbool.h>
#include <unistd.h>
#include <getopt.h>
#include <limits.h>
#include <errno.h>
#include <inttypes.h>
#include <sys/sysinfo.h>
#define _LINUX_SYSINFO_H /* avoid collision with musl header */
#include <linux/genetlink.h>
#include <linux/devlink.h>
#include <libmnl/libmnl.h>
#include <netinet/ether.h>
#include <sys/types.h>

#include "SNAPSHOT.h"
#include "list.h"
#include "mnlg.h"
#include "json_writer.h"
#include "utils.h"

#define ESWITCH_MODE_LEGACY "legacy"
#define ESWITCH_MODE_SWITCHDEV "switchdev"
#define ESWITCH_INLINE_MODE_NONE "none"
#define ESWITCH_INLINE_MODE_LINK "link"
#define ESWITCH_INLINE_MODE_NETWORK "network"
#define ESWITCH_INLINE_MODE_TRANSPORT "transport"

#define PARAM_CMODE_RUNTIME_STR "runtime"
#define PARAM_CMODE_DRIVERINIT_STR "driverinit"
#define PARAM_CMODE_PERMANENT_STR "permanent"
#define DL_ARGS_REQUIRED_MAX_ERR_LEN 80

#define HEALTH_REPORTER_STATE_HEALTHY_STR "healthy"
#define HEALTH_REPORTER_STATE_ERROR_STR "error"
#define HEALTH_REPORTER_TIMESTAMP_FMT_LEN 80

static int g_new_line_count;
static int g_indent_level;
static bool g_indent_newline;

#define INDENT_STR_STEP 2
#define INDENT_STR_MAXLEN 32
static char g_indent_str[INDENT_STR_MAXLEN + 1] = "";

static void __attribute__((format(printf, 1, 2)))
pr_err(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	vfprintf(stderr, fmt, ap);
	va_end(ap);
}

static void __attribute__((format(printf, 1, 2)))
pr_out(const char *fmt, ...)
{
	va_list ap;

	if (g_indent_newline) {
		printf("%s", g_indent_str);
		g_indent_newline = false;
	}
	va_start(ap, fmt);
	vprintf(fmt, ap);
	va_end(ap);
	g_new_line_count = 0;
}

static void __attribute__((format(printf, 2, 3)))
pr_out_sp(unsigned int num, const char *fmt, ...)
{
	va_list ap;
	int ret;

	va_start(ap, fmt);
	ret = vprintf(fmt, ap);
	va_end(ap);

	if (ret < num)
		printf("%*s", num - ret, "");
	g_new_line_count = 0;			\
}

static void __attribute__((format(printf, 1, 2)))
pr_out_tty(const char *fmt, ...)
{
	va_list ap;

	if (!isatty(STDOUT_FILENO))
		return;
	va_start(ap, fmt);
	vprintf(fmt, ap);
	va_end(ap);
}

static void __pr_out_indent_inc(void)
{
	if (g_indent_level + INDENT_STR_STEP > INDENT_STR_MAXLEN)
		return;
	g_indent_level += INDENT_STR_STEP;
	memset(g_indent_str, ' ', sizeof(g_indent_str));
	g_indent_str[g_indent_level] = '\0';
}

static void __pr_out_indent_dec(void)
{
	if (g_indent_level - INDENT_STR_STEP < 0)
		return;
	g_indent_level -= INDENT_STR_STEP;
	g_indent_str[g_indent_level] = '\0';
}

static void __pr_out_newline(void)
{
	if (g_new_line_count < 1) {
		pr_out("\n");
		g_indent_newline = true;
	}
	g_new_line_count++;
}

static int _mnlg_socket_recv_run(struct mnlg_socket *nlg,
				 mnl_cb_t data_cb, void *data)
{
	int err;

	err = mnlg_socket_recv_run(nlg, data_cb, data);
	if (err < 0) {
		pr_err("devlink answers: %s\n", strerror(errno));
		return -errno;
	}
	return 0;
}

static int _mnlg_socket_send(struct mnlg_socket *nlg,
			     const struct nlmsghdr *nlh)
{
	int err;

	err = mnlg_socket_send(nlg, nlh);
	if (err < 0) {
		pr_err("Failed to call mnlg_socket_send\n");
		return -errno;
	}
	return 0;
}

static int _mnlg_socket_sndrcv(struct mnlg_socket *nlg,
			       const struct nlmsghdr *nlh,
			       mnl_cb_t data_cb, void *data)
{
	int err;

	err = _mnlg_socket_send(nlg, nlh);
	if (err)
		return err;
	return _mnlg_socket_recv_run(nlg, data_cb, data);
}

static int _mnlg_socket_group_add(struct mnlg_socket *nlg,
				  const char *group_name)
{
	int err;

	err = mnlg_socket_group_add(nlg, group_name);
	if (err < 0) {
		pr_err("Failed to call mnlg_socket_group_add\n");
		return -errno;
	}
	return 0;
}

struct ifname_map {
	struct list_head list;
	char *bus_name;
	char *dev_name;
	uint32_t port_index;
	char *ifname;
};

static struct ifname_map *ifname_map_alloc(const char *bus_name,
					   const char *dev_name,
					   uint32_t port_index,
					   const char *ifname)
{
	struct ifname_map *ifname_map;

	ifname_map = calloc(1, sizeof(*ifname_map));
	if (!ifname_map)
		return NULL;
	ifname_map->bus_name = strdup(bus_name);
	ifname_map->dev_name = strdup(dev_name);
	ifname_map->port_index = port_index;
	ifname_map->ifname = strdup(ifname);
	if (!ifname_map->bus_name || !ifname_map->dev_name ||
	    !ifname_map->ifname) {
		free(ifname_map->ifname);
		free(ifname_map->dev_name);
		free(ifname_map->bus_name);
		free(ifname_map);
		return NULL;
	}
	return ifname_map;
}

static void ifname_map_free(struct ifname_map *ifname_map)
{
	free(ifname_map->ifname);
	free(ifname_map->dev_name);
	free(ifname_map->bus_name);
	free(ifname_map);
}

#define DL_OPT_HANDLE		BIT(0)
#define DL_OPT_HANDLEP		BIT(1)
#define DL_OPT_PORT_TYPE	BIT(2)
#define DL_OPT_PORT_COUNT	BIT(3)
#define DL_OPT_SB		BIT(4)
#define DL_OPT_SB_POOL		BIT(5)
#define DL_OPT_SB_SIZE		BIT(6)
#define DL_OPT_SB_TYPE		BIT(7)
#define DL_OPT_SB_THTYPE	BIT(8)
#define DL_OPT_SB_TH		BIT(9)
#define DL_OPT_SB_TC		BIT(10)
#define DL_OPT_ESWITCH_MODE	BIT(11)
#define DL_OPT_ESWITCH_INLINE_MODE	BIT(12)
#define DL_OPT_DPIPE_TABLE_NAME	BIT(13)
#define DL_OPT_DPIPE_TABLE_COUNTERS	BIT(14)
#define DL_OPT_ESWITCH_ENCAP_MODE	BIT(15)
#define DL_OPT_RESOURCE_PATH	BIT(16)
#define DL_OPT_RESOURCE_SIZE	BIT(17)
#define DL_OPT_PARAM_NAME	BIT(18)
#define DL_OPT_PARAM_VALUE	BIT(19)
#define DL_OPT_PARAM_CMODE	BIT(20)
#define DL_OPT_HANDLE_REGION		BIT(21)
#define DL_OPT_REGION_SNAPSHOT_ID	BIT(22)
#define DL_OPT_REGION_ADDRESS		BIT(23)
#define DL_OPT_REGION_LENGTH		BIT(24)
#define DL_OPT_FLASH_FILE_NAME	BIT(25)
#define DL_OPT_FLASH_COMPONENT	BIT(26)
#define DL_OPT_HEALTH_REPORTER_NAME	BIT(27)
#define DL_OPT_HEALTH_REPORTER_GRACEFUL_PERIOD	BIT(28)
#define DL_OPT_HEALTH_REPORTER_AUTO_RECOVER	BIT(29)
#define DL_OPT_TRAP_NAME		BIT(30)
#define DL_OPT_TRAP_ACTION		BIT(31)
#define DL_OPT_TRAP_GROUP_NAME		BIT(32)

struct dl_opts {
	uint64_t present; /* flags of present items */
	char *bus_name;
	char *dev_name;
	uint32_t port_index;
	enum devlink_port_type port_type;
	uint32_t port_count;
	uint32_t sb_index;
	uint16_t sb_pool_index;
	uint32_t sb_pool_size;
	enum devlink_sb_pool_type sb_pool_type;
	enum devlink_sb_threshold_type sb_pool_thtype;
	uint32_t sb_threshold;
	uint16_t sb_tc_index;
	enum devlink_eswitch_mode eswitch_mode;
	enum devlink_eswitch_inline_mode eswitch_inline_mode;
	const char *dpipe_table_name;
	bool dpipe_counters_enable;
	bool eswitch_encap_mode;
	const char *resource_path;
	uint32_t resource_size;
	uint32_t resource_id;
	bool resource_id_valid;
	const char *param_name;
	const char *param_value;
	enum devlink_param_cmode cmode;
	char *region_name;
	uint32_t region_snapshot_id;
	uint64_t region_address;
	uint64_t region_length;
	const char *flash_file_name;
	const char *flash_component;
	const char *reporter_name;
	uint64_t reporter_graceful_period;
	bool reporter_auto_recover;
	const char *trap_name;
	const char *trap_group_name;
	enum devlink_trap_action trap_action;
};

struct dl {
	struct mnlg_socket *nlg;
	struct list_head ifname_map_list;
	int argc;
	char **argv;
	bool no_nice_names;
	struct dl_opts opts;
	json_writer_t *jw;
	bool json_output;
	bool pretty_output;
	bool verbose;
	bool stats;
	struct {
		bool present;
		char *bus_name;
		char *dev_name;
		uint32_t port_index;
	} arr_last;
};

static int dl_argc(struct dl *dl)
{
	return dl->argc;
}

static char *dl_argv(struct dl *dl)
{
	if (dl_argc(dl) == 0)
		return NULL;
	return *dl->argv;
}

static void dl_arg_inc(struct dl *dl)
{
	if (dl_argc(dl) == 0)
		return;
	dl->argc--;
	dl->argv++;
}

static char *dl_argv_next(struct dl *dl)
{
	char *ret;

	if (dl_argc(dl) == 0)
		return NULL;

	ret = *dl->argv;
	dl_arg_inc(dl);
	return ret;
}

static char *dl_argv_index(struct dl *dl, unsigned int index)
{
	if (index >= dl_argc(dl))
		return NULL;
	return dl->argv[index];
}

static int strcmpx(const char *str1, const char *str2)
{
	if (strlen(str1) > strlen(str2))
		return -1;
	return strncmp(str1, str2, strlen(str1));
}

static bool dl_argv_match(struct dl *dl, const char *pattern)
{
	if (dl_argc(dl) == 0)
		return false;
	return strcmpx(dl_argv(dl), pattern) == 0;
}

static bool dl_no_arg(struct dl *dl)
{
	return dl_argc(dl) == 0;
}

static void __pr_out_indent_newline(struct dl *dl)
{
	if (!g_indent_newline && !dl->json_output)
		pr_out(" ");
}

static const enum mnl_attr_data_type devlink_policy[DEVLINK_ATTR_MAX + 1] = {
	[DEVLINK_ATTR_BUS_NAME] = MNL_TYPE_NUL_STRING,
	[DEVLINK_ATTR_DEV_NAME] = MNL_TYPE_NUL_STRING,
	[DEVLINK_ATTR_PORT_INDEX] = MNL_TYPE_U32,
	[DEVLINK_ATTR_PORT_TYPE] = MNL_TYPE_U16,
	[DEVLINK_ATTR_PORT_DESIRED_TYPE] = MNL_TYPE_U16,
	[DEVLINK_ATTR_PORT_NETDEV_IFINDEX] = MNL_TYPE_U32,
	[DEVLINK_ATTR_PORT_NETDEV_NAME] = MNL_TYPE_NUL_STRING,
	[DEVLINK_ATTR_PORT_IBDEV_NAME] = MNL_TYPE_NUL_STRING,
	[DEVLINK_ATTR_SB_INDEX] = MNL_TYPE_U32,
	[DEVLINK_ATTR_SB_SIZE] = MNL_TYPE_U32,
	[DEVLINK_ATTR_SB_INGRESS_POOL_COUNT] = MNL_TYPE_U16,
	[DEVLINK_ATTR_SB_EGRESS_POOL_COUNT] = MNL_TYPE_U16,
	[DEVLINK_ATTR_SB_INGRESS_TC_COUNT] = MNL_TYPE_U16,
	[DEVLINK_ATTR_SB_EGRESS_TC_COUNT] = MNL_TYPE_U16,
	[DEVLINK_ATTR_SB_POOL_INDEX] = MNL_TYPE_U16,
	[DEVLINK_ATTR_SB_POOL_TYPE] = MNL_TYPE_U8,
	[DEVLINK_ATTR_SB_POOL_SIZE] = MNL_TYPE_U32,
	[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = MNL_TYPE_U8,
	[DEVLINK_ATTR_SB_THRESHOLD] = MNL_TYPE_U32,
	[DEVLINK_ATTR_SB_TC_INDEX] = MNL_TYPE_U16,
	[DEVLINK_ATTR_SB_OCC_CUR] = MNL_TYPE_U32,
	[DEVLINK_ATTR_SB_OCC_MAX] = MNL_TYPE_U32,
	[DEVLINK_ATTR_ESWITCH_MODE] = MNL_TYPE_U16,
	[DEVLINK_ATTR_ESWITCH_INLINE_MODE] = MNL_TYPE_U8,
	[DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = MNL_TYPE_U8,
	[DEVLINK_ATTR_DPIPE_TABLES] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_TABLE] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_TABLE_NAME] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_DPIPE_TABLE_SIZE] = MNL_TYPE_U64,
	[DEVLINK_ATTR_DPIPE_TABLE_MATCHES] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_TABLE_ACTIONS] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] =  MNL_TYPE_U8,
	[DEVLINK_ATTR_DPIPE_ENTRIES] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_ENTRY] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_ENTRY_INDEX] = MNL_TYPE_U64,
	[DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_ENTRY_COUNTER] = MNL_TYPE_U64,
	[DEVLINK_ATTR_DPIPE_MATCH] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_MATCH_VALUE] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_MATCH_TYPE] = MNL_TYPE_U32,
	[DEVLINK_ATTR_DPIPE_ACTION] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_ACTION_VALUE] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_ACTION_TYPE] = MNL_TYPE_U32,
	[DEVLINK_ATTR_DPIPE_VALUE_MAPPING] = MNL_TYPE_U32,
	[DEVLINK_ATTR_DPIPE_HEADERS] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_HEADER] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_HEADER_NAME] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_DPIPE_HEADER_ID] = MNL_TYPE_U32,
	[DEVLINK_ATTR_DPIPE_HEADER_FIELDS] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_HEADER_GLOBAL] = MNL_TYPE_U8,
	[DEVLINK_ATTR_DPIPE_HEADER_INDEX] = MNL_TYPE_U32,
	[DEVLINK_ATTR_DPIPE_FIELD] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_DPIPE_FIELD_NAME] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_DPIPE_FIELD_ID] = MNL_TYPE_U32,
	[DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH] = MNL_TYPE_U32,
	[DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE] = MNL_TYPE_U32,
	[DEVLINK_ATTR_PARAM] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_PARAM_NAME] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_PARAM_TYPE] = MNL_TYPE_U8,
	[DEVLINK_ATTR_PARAM_VALUES_LIST] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_PARAM_VALUE] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_PARAM_VALUE_CMODE] = MNL_TYPE_U8,
	[DEVLINK_ATTR_REGION_NAME] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_REGION_SIZE] = MNL_TYPE_U64,
	[DEVLINK_ATTR_REGION_SNAPSHOTS] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_REGION_SNAPSHOT] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_REGION_SNAPSHOT_ID] = MNL_TYPE_U32,
	[DEVLINK_ATTR_REGION_CHUNKS] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_REGION_CHUNK] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_REGION_CHUNK_DATA] = MNL_TYPE_BINARY,
	[DEVLINK_ATTR_REGION_CHUNK_ADDR] = MNL_TYPE_U64,
	[DEVLINK_ATTR_REGION_CHUNK_LEN] = MNL_TYPE_U64,
	[DEVLINK_ATTR_INFO_DRIVER_NAME] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_INFO_SERIAL_NUMBER] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_INFO_VERSION_FIXED] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_INFO_VERSION_RUNNING] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_INFO_VERSION_STORED] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_INFO_VERSION_NAME] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_INFO_VERSION_VALUE] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_HEALTH_REPORTER] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_HEALTH_REPORTER_NAME] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_HEALTH_REPORTER_STATE] = MNL_TYPE_U8,
	[DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT] = MNL_TYPE_U64,
	[DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT] = MNL_TYPE_U64,
	[DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS] = MNL_TYPE_U64,
	[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = MNL_TYPE_U64,
	[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE] = MNL_TYPE_U64,
	[DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL] = MNL_TYPE_U64,
	[DEVLINK_ATTR_STATS] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_TRAP_NAME] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_TRAP_ACTION] = MNL_TYPE_U8,
	[DEVLINK_ATTR_TRAP_TYPE] = MNL_TYPE_U8,
	[DEVLINK_ATTR_TRAP_GENERIC] = MNL_TYPE_FLAG,
	[DEVLINK_ATTR_TRAP_METADATA] = MNL_TYPE_NESTED,
	[DEVLINK_ATTR_TRAP_GROUP_NAME] = MNL_TYPE_STRING,
	[DEVLINK_ATTR_RELOAD_FAILED] = MNL_TYPE_U8,
};

static const enum mnl_attr_data_type
devlink_stats_policy[DEVLINK_ATTR_STATS_MAX + 1] = {
	[DEVLINK_ATTR_STATS_RX_PACKETS] = MNL_TYPE_U64,
	[DEVLINK_ATTR_STATS_RX_BYTES] = MNL_TYPE_U64,
};

static int attr_cb(const struct nlattr *attr, void *data)
{
	const struct nlattr **tb = data;
	int type;

	if (mnl_attr_type_valid(attr, DEVLINK_ATTR_MAX) < 0)
		return MNL_CB_OK;

	type = mnl_attr_get_type(attr);
	if (mnl_attr_validate(attr, devlink_policy[type]) < 0)
		return MNL_CB_ERROR;

	tb[type] = attr;
	return MNL_CB_OK;
}

static int attr_stats_cb(const struct nlattr *attr, void *data)
{
	const struct nlattr **tb = data;
	int type;

	/* Allow the tool to work on top of newer kernels that might contain
	 * more attributes.
	 */
	if (mnl_attr_type_valid(attr, DEVLINK_ATTR_STATS_MAX) < 0)
		return MNL_CB_OK;

	type = mnl_attr_get_type(attr);
	if (mnl_attr_validate(attr, devlink_stats_policy[type]) < 0)
		return MNL_CB_ERROR;

	tb[type] = attr;
	return MNL_CB_OK;
}

static int ifname_map_cb(const struct nlmsghdr *nlh, void *data)
{
	struct nlattr *tb[DEVLINK_ATTR_MAX + 1] = {};
	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
	struct dl *dl = data;
	struct ifname_map *ifname_map;
	const char *bus_name;
	const char *dev_name;
	uint32_t port_ifindex;
	const char *port_ifname;

	mnl_attr_parse(nlh, sizeof(*genl), attr_cb, tb);
	if (!tb[DEVLINK_ATTR_BUS_NAME] || !tb[DEVLINK_ATTR_DEV_NAME] ||
	    !tb[DEVLINK_ATTR_PORT_INDEX])
		return MNL_CB_ERROR;

	if (!tb[DEVLINK_ATTR_PORT_NETDEV_NAME])
		return MNL_CB_OK;

	bus_name = mnl_attr_get_str(tb[DEVLINK_ATTR_BUS_NAME]);
	dev_name = mnl_attr_get_str(tb[DEVLINK_ATTR_DEV_NAME]);
	port_ifindex = mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_INDEX]);
	port_ifname = mnl_attr_get_str(tb[DEVLINK_ATTR_PORT_NETDEV_NAME]);
	ifname_map = ifname_map_alloc(bus_name, dev_name,
				      port_ifindex, port_ifname);
	if (!ifname_map)
		return MNL_CB_ERROR;
	list_add(&ifname_map->list, &dl->ifname_map_list);

	return MNL_CB_OK;
}

static void ifname_map_fini(struct dl *dl)
{
	struct ifname_map *ifname_map, *tmp;

	list_for_each_entry_safe(ifname_map, tmp,
				 &dl->ifname_map_list, list) {
		list_del(&ifname_map->list);
		ifname_map_free(ifname_map);
	}
}

static int ifname_map_init(struct dl *dl)
{
	struct nlmsghdr *nlh;
	int err;

	INIT_LIST_HEAD(&dl->ifname_map_list);

	nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_PORT_GET,
			       NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP);

	err = _mnlg_socket_sndrcv(dl->nlg, nlh, ifname_map_cb, dl);
	if (err) {
		ifname_map_fini(dl);
		return err;
	}
	return 0;
}

static int ifname_map_lookup(struct dl *dl, const char *ifname,
			     char **p_bus_name, char **p_dev_name,
			     uint32_t *p_port_index)
{
	struct ifname_map *ifname_map;

	list_for_each_entry(ifname_map, &dl->ifname_map_list, list) {
		if (strcmp(ifname, ifname_map->ifname) == 0) {
			*p_bus_name = ifname_map->bus_name;
			*p_dev_name = ifname_map->dev_name;
			*p_port_index = ifname_map->port_index;
			return 0;
		}
	}
	return -ENOENT;
}

static int ifname_map_rev_lookup(struct dl *dl, const char *bus_name,
				 const char *dev_name, uint32_t port_index,
				 char **p_ifname)
{
	struct ifname_map *ifname_map;

	list_for_each_entry(ifname_map, &dl->ifname_map_list, list) {
		if (strcmp(bus_name, ifname_map->bus_name) == 0 &&
		    strcmp(dev_name, ifname_map->dev_name) == 0 &&
		    port_index == ifname_map->port_index) {
			*p_ifname = ifname_map->ifname;
			return 0;
		}
	}
	return -ENOENT;
}

static unsigned int strslashcount(char *str)
{
	unsigned int count = 0;
	char *pos = str;

	while ((pos = strchr(pos, '/'))) {
		count++;
		pos++;
	}
	return count;
}

static int strslashrsplit(char *str, char **before, char **after)
{
	char *slash;

	slash = strrchr(str, '/');
	if (!slash)
		return -EINVAL;
	*slash = '\0';
	*before = str;
	*after = slash + 1;
	return 0;
}

static int strtouint64_t(const char *str, uint64_t *p_val)
{
	char *endptr;
	unsigned long long int val;

	val = strtoull(str, &endptr, 10);
	if (endptr == str || *endptr != '\0')
		return -EINVAL;
	if (val > ULONG_MAX)
		return -ERANGE;
	*p_val = val;
	return 0;
}

static int strtouint32_t(const char *str, uint32_t *p_val)
{
	char *endptr;
	unsigned long int val;

	val = strtoul(str, &endptr, 10);
	if (endptr == str || *endptr != '\0')
		return -EINVAL;
	if (val > UINT_MAX)
		return -ERANGE;
	*p_val = val;
	return 0;
}

static int strtouint16_t(const char *str, uint16_t *p_val)
{
	char *endptr;
	unsigned long int val;

	val = strtoul(str, &endptr, 10);
	if (endptr == str || *endptr != '\0')
		return -EINVAL;
	if (val > USHRT_MAX)
		return -ERANGE;
	*p_val = val;
	return 0;
}

static int strtouint8_t(const char *str, uint8_t *p_val)
{
	char *endptr;
	unsigned long int val;

	val = strtoul(str, &endptr, 10);
	if (endptr == str || *endptr != '\0')
		return -EINVAL;
	if (val > UCHAR_MAX)
		return -ERANGE;
	*p_val = val;
	return 0;
}

static int strtobool(const char *str, bool *p_val)
{
	bool val;

	if (!strcmp(str, "true") || !strcmp(str, "1"))
		val = true;
	else if (!strcmp(str, "false") || !strcmp(str, "0"))
		val = false;
	else
		return -EINVAL;
	*p_val = val;
	return 0;
}

static int __dl_argv_handle(char *str, char **p_bus_name, char **p_dev_name)
{
	strslashrsplit(str, p_bus_name, p_dev_name);
	return 0;
}

static int dl_argv_handle(struct dl *dl, char **p_bus_name, char **p_dev_name)
{
	char *str = dl_argv_next(dl);

	if (!str) {
		pr_err("Devlink identification (\"bus_name/dev_name\") expected\n");
		return -EINVAL;
	}
	if (strslashcount(str) != 1) {
		pr_err("Wrong devlink identification string format.\n");
		pr_err("Expected \"bus_name/dev_name\".\n");
		return -EINVAL;
	}
	return __dl_argv_handle(str, p_bus_name, p_dev_name);
}

static int __dl_argv_handle_port(char *str,
				 char **p_bus_name, char **p_dev_name,
				 uint32_t *p_port_index)
{
	char *handlestr;
	char *portstr;
	int err;

	err = strslashrsplit(str, &handlestr, &portstr);
	if (err) {
		pr_err("Port identification \"%s\" is invalid\n", str);
		return err;
	}
	err = strtouint32_t(portstr, p_port_index);
	if (err) {
		pr_err("Port index \"%s\" is not a number or not within range\n",
		       portstr);
		return err;
	}
	err = strslashrsplit(handlestr, p_bus_name, p_dev_name);
	if (err) {
		pr_err("Port identification \"%s\" is invalid\n", str);
		return err;
	}
	return 0;
}

static int __dl_argv_handle_port_ifname(struct dl *dl, char *str,
					char **p_bus_name, char **p_dev_name,
					uint32_t *p_port_index)
{
	int err;

	err = ifname_map_lookup(dl, str, p_bus_name, p_dev_name,
				p_port_index);
	if (err) {
		pr_err("Netdevice \"%s\" not found\n", str);
		return err;
	}
	return 0;
}

static int dl_argv_handle_port(struct dl *dl, char **p_bus_name,
			       char **p_dev_name, uint32_t *p_port_index)
{
	char *str = dl_argv_next(dl);
	unsigned int slash_count;

	if (!str) {
		pr_err("Port identification (\"bus_name/dev_name/port_index\" or \"netdev ifname\") expected.\n");
		return -EINVAL;
	}
	slash_count = strslashcount(str);
	switch (slash_count) {
	case 0:
		return __dl_argv_handle_port_ifname(dl, str, p_bus_name,
						    p_dev_name, p_port_index);
	case 2:
		return __dl_argv_handle_port(str, p_bus_name,
					     p_dev_name, p_port_index);
	default:
		pr_err("Wrong port identification string format.\n");
		pr_err("Expected \"bus_name/dev_name/port_index\" or \"netdev_ifname\".\n");
		return -EINVAL;
	}
}

static int dl_argv_handle_both(struct dl *dl, char **p_bus_name,
			       char **p_dev_name, uint32_t *p_port_index,
			       uint64_t *p_handle_bit)
{
	char *str = dl_argv_next(dl);
	unsigned int slash_count;
	int err;

	if (!str) {
		pr_err("One of following identifications expected:\n"
		       "Devlink identification (\"bus_name/dev_name\")\n"
		       "Port identification (\"bus_name/dev_name/port_index\" or \"netdev ifname\")\n");
		return -EINVAL;
	}
	slash_count = strslashcount(str);
	if (slash_count == 1) {
		err = __dl_argv_handle(str, p_bus_name, p_dev_name);
		if (err)
			return err;
		*p_handle_bit = DL_OPT_HANDLE;
	} else if (slash_count == 2) {
		err = __dl_argv_handle_port(str, p_bus_name,
					    p_dev_name, p_port_index);
		if (err)
			return err;
		*p_handle_bit = DL_OPT_HANDLEP;
	} else if (slash_count == 0) {
		err = __dl_argv_handle_port_ifname(dl, str, p_bus_name,
						   p_dev_name, p_port_index);
		if (err)
			return err;
		*p_handle_bit = DL_OPT_HANDLEP;
	} else {
		pr_err("Wrong port identification string format.\n");
		pr_err("Expected \"bus_name/dev_name\" or \"bus_name/dev_name/port_index\" or \"netdev_ifname\".\n");
		return -EINVAL;
	}
	return 0;
}

static int __dl_argv_handle_region(char *str, char **p_bus_name,
				   char **p_dev_name, char **p_region)
{
	char *handlestr;
	int err;

	err = strslashrsplit(str, &handlestr, p_region);
	if (err) {
		pr_err("Region identification \"%s\" is invalid\n", str);
		return err;
	}
	err = strslashrsplit(handlestr, p_bus_name, p_dev_name);
	if (err) {
		pr_err("Region identification \"%s\" is invalid\n", str);
		return err;
	}
	return 0;
}

static int dl_argv_handle_region(struct dl *dl, char **p_bus_name,
					char **p_dev_name, char **p_region)
{
	char *str = dl_argv_next(dl);
	unsigned int slash_count;

	if (!str) {
		pr_err("Expected \"bus_name/dev_name/region\" identification.\n");
		return -EINVAL;
	}

	slash_count = strslashcount(str);
	if (slash_count != 2) {
		pr_err("Wrong region identification string format.\n");
		pr_err("Expected \"bus_name/dev_name/region\" identification.\n"".\n");
		return -EINVAL;
	}

	return __dl_argv_handle_region(str, p_bus_name, p_dev_name, p_region);
}

static int dl_argv_uint64_t(struct dl *dl, uint64_t *p_val)
{
	char *str = dl_argv_next(dl);
	int err;

	if (!str) {
		pr_err("Unsigned number argument expected\n");
		return -EINVAL;
	}

	err = strtouint64_t(str, p_val);
	if (err) {
		pr_err("\"%s\" is not a number or not within range\n", str);
		return err;
	}
	return 0;
}

static int dl_argv_uint32_t(struct dl *dl, uint32_t *p_val)
{
	char *str = dl_argv_next(dl);
	int err;

	if (!str) {
		pr_err("Unsigned number argument expected\n");
		return -EINVAL;
	}

	err = strtouint32_t(str, p_val);
	if (err) {
		pr_err("\"%s\" is not a number or not within range\n", str);
		return err;
	}
	return 0;
}

static int dl_argv_uint16_t(struct dl *dl, uint16_t *p_val)
{
	char *str = dl_argv_next(dl);
	int err;

	if (!str) {
		pr_err("Unsigned number argument expected\n");
		return -EINVAL;
	}

	err = strtouint16_t(str, p_val);
	if (err) {
		pr_err("\"%s\" is not a number or not within range\n", str);
		return err;
	}
	return 0;
}

static int dl_argv_bool(struct dl *dl, bool *p_val)
{
	char *str = dl_argv_next(dl);
	int err;

	if (!str) {
		pr_err("Boolean argument expected\n");
		return -EINVAL;
	}

	err = strtobool(str, p_val);
	if (err) {
		pr_err("\"%s\" is not a valid boolean value\n", str);
		return err;
	}
	return 0;
}

static int dl_argv_str(struct dl *dl, const char **p_str)
{
	const char *str = dl_argv_next(dl);

	if (!str) {
		pr_err("String parameter expected\n");
		return -EINVAL;
	}
	*p_str = str;
	return 0;
}

static int port_type_get(const char *typestr, enum devlink_port_type *p_type)
{
	if (strcmp(typestr, "auto") == 0) {
		*p_type = DEVLINK_PORT_TYPE_AUTO;
	} else if (strcmp(typestr, "eth") == 0) {
		*p_type = DEVLINK_PORT_TYPE_ETH;
	} else if (strcmp(typestr, "ib") == 0) {
		*p_type = DEVLINK_PORT_TYPE_IB;
	} else {
		pr_err("Unknown port type \"%s\"\n", typestr);
		return -EINVAL;
	}
	return 0;
}

static int pool_type_get(const char *typestr, enum devlink_sb_pool_type *p_type)
{
	if (strcmp(typestr, "ingress") == 0) {
		*p_type = DEVLINK_SB_POOL_TYPE_INGRESS;
	} else if (strcmp(typestr, "egress") == 0) {
		*p_type = DEVLINK_SB_POOL_TYPE_EGRESS;
	} else {
		pr_err("Unknown pool type \"%s\"\n", typestr);
		return -EINVAL;
	}
	return 0;
}

static int threshold_type_get(const char *typestr,
			      enum devlink_sb_threshold_type *p_type)
{
	if (strcmp(typestr, "static") == 0) {
		*p_type = DEVLINK_SB_THRESHOLD_TYPE_STATIC;
	} else if (strcmp(typestr, "dynamic") == 0) {
		*p_type = DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC;
	} else {
		pr_err("Unknown threshold type \"%s\"\n", typestr);
		return -EINVAL;
	}
	return 0;
}

static int eswitch_mode_get(const char *typestr,
			    enum devlink_eswitch_mode *p_mode)
{
	if (strcmp(typestr, ESWITCH_MODE_LEGACY) == 0) {
		*p_mode = DEVLINK_ESWITCH_MODE_LEGACY;
	} else if (strcmp(typestr, ESWITCH_MODE_SWITCHDEV) == 0) {
		*p_mode = DEVLINK_ESWITCH_MODE_SWITCHDEV;
	} else {
		pr_err("Unknown eswitch mode \"%s\"\n", typestr);
		return -EINVAL;
	}
	return 0;
}

static int eswitch_inline_mode_get(const char *typestr,
				   enum devlink_eswitch_inline_mode *p_mode)
{
	if (strcmp(typestr, ESWITCH_INLINE_MODE_NONE) == 0) {
		*p_mode = DEVLINK_ESWITCH_INLINE_MODE_NONE;
	} else if (strcmp(typestr, ESWITCH_INLINE_MODE_LINK) == 0) {
		*p_mode = DEVLINK_ESWITCH_INLINE_MODE_LINK;
	} else if (strcmp(typestr, ESWITCH_INLINE_MODE_NETWORK) == 0) {
		*p_mode = DEVLINK_ESWITCH_INLINE_MODE_NETWORK;
	} else if (strcmp(typestr, ESWITCH_INLINE_MODE_TRANSPORT) == 0) {
		*p_mode = DEVLINK_ESWITCH_INLINE_MODE_TRANSPORT;
	} else {
		pr_err("Unknown eswitch inline mode \"%s\"\n", typestr);
		return -EINVAL;
	}
	return 0;
}

static int dpipe_counters_enable_get(const char *typestr,
				     bool *counters_enable)
{
	if (strcmp(typestr, "enable") == 0) {
		*counters_enable = 1;
	} else if (strcmp(typestr, "disable") == 0) {
		*counters_enable = 0;
	} else {
		pr_err("Unknown counter_state \"%s\"\n", typestr);
		return -EINVAL;
	}
	return 0;
}

static int eswitch_encap_mode_get(const char *typestr, bool *p_mode)
{
	if (strcmp(typestr, "enable") == 0) {
		*p_mode = true;
	} else if (strcmp(typestr, "disable") == 0) {
		*p_mode = false;
	} else {
		pr_err("Unknown eswitch encap mode \"%s\"\n", typestr);
		return -EINVAL;
	}
	return 0;
}

static int param_cmode_get(const char *cmodestr,
			   enum devlink_param_cmode *cmode)
{
	if (strcmp(cmodestr, PARAM_CMODE_RUNTIME_STR) == 0) {
		*cmode = DEVLINK_PARAM_CMODE_RUNTIME;
	} else if (strcmp(cmodestr, PARAM_CMODE_DRIVERINIT_STR) == 0) {
		*cmode = DEVLINK_PARAM_CMODE_DRIVERINIT;
	} else if (strcmp(cmodestr, PARAM_CMODE_PERMANENT_STR) == 0) {
		*cmode = DEVLINK_PARAM_CMODE_PERMANENT;
	} else {
		pr_err("Unknown configuration mode \"%s\"\n", cmodestr);
		return -EINVAL;
	}
	return 0;
}

static int trap_action_get(const char *actionstr,
			   enum devlink_trap_action *p_action)
{
	if (strcmp(actionstr, "drop") == 0) {
		*p_action = DEVLINK_TRAP_ACTION_DROP;
	} else if (strcmp(actionstr, "trap") == 0) {
		*p_action = DEVLINK_TRAP_ACTION_TRAP;
	} else {
		pr_err("Unknown trap action \"%s\"\n", actionstr);
		return -EINVAL;
	}
	return 0;
}

struct dl_args_metadata {
	uint64_t o_flag;
	char err_msg[DL_ARGS_REQUIRED_MAX_ERR_LEN];
};

static const struct dl_args_metadata dl_args_required[] = {
	{DL_OPT_PORT_TYPE,	      "Port type not set."},
	{DL_OPT_PORT_COUNT,	      "Port split count option expected."},
	{DL_OPT_SB_POOL,	      "Pool index option expected."},
	{DL_OPT_SB_SIZE,	      "Pool size option expected."},
	{DL_OPT_SB_TYPE,	      "Pool type option expected."},
	{DL_OPT_SB_THTYPE,	      "Pool threshold type option expected."},
	{DL_OPT_SB_TH,		      "Threshold option expected."},
	{DL_OPT_SB_TC,		      "TC index option expected."},
	{DL_OPT_ESWITCH_MODE,	      "E-Switch mode option expected."},
	{DL_OPT_ESWITCH_INLINE_MODE,  "E-Switch inline-mode option expected."},
	{DL_OPT_DPIPE_TABLE_NAME,     "Dpipe table name expected."},
	{DL_OPT_DPIPE_TABLE_COUNTERS, "Dpipe table counter state expected."},
	{DL_OPT_ESWITCH_ENCAP_MODE,   "E-Switch encapsulation option expected."},
	{DL_OPT_RESOURCE_PATH,	      "Resource path expected."},
	{DL_OPT_RESOURCE_SIZE,	      "Resource size expected."},
	{DL_OPT_PARAM_NAME,	      "Parameter name expected."},
	{DL_OPT_PARAM_VALUE,	      "Value to set expected."},
	{DL_OPT_PARAM_CMODE,	      "Configuration mode expected."},
	{DL_OPT_REGION_SNAPSHOT_ID,   "Region snapshot id expected."},
	{DL_OPT_REGION_ADDRESS,	      "Region address value expected."},
	{DL_OPT_REGION_LENGTH,	      "Region length value expected."},
	{DL_OPT_HEALTH_REPORTER_NAME, "Reporter's name is expected."},
	{DL_OPT_TRAP_NAME,            "Trap's name is expected."},
	{DL_OPT_TRAP_GROUP_NAME,      "Trap group's name is expected."},
};

static int dl_args_finding_required_validate(uint64_t o_required,
					     uint64_t o_found)
{
	uint64_t o_flag;
	int i;

	for (i = 0; i < ARRAY_SIZE(dl_args_required); i++) {
		o_flag = dl_args_required[i].o_flag;
		if ((o_required & o_flag) && !(o_found & o_flag)) {
			pr_err("%s\n", dl_args_required[i].err_msg);
			return -EINVAL;
		}
	}
	return 0;
}

static int dl_argv_parse(struct dl *dl, uint64_t o_required,
			 uint64_t o_optional)
{
	struct dl_opts *opts = &dl->opts;
	uint64_t o_all = o_required | o_optional;
	uint64_t o_found = 0;
	int err;

	if (o_required & DL_OPT_HANDLE && o_required & DL_OPT_HANDLEP) {
		uint64_t handle_bit;

		err = dl_argv_handle_both(dl, &opts->bus_name, &opts->dev_name,
					  &opts->port_index, &handle_bit);
		if (err)
			return err;
		o_found |= handle_bit;
	} else if (o_required & DL_OPT_HANDLE) {
		err = dl_argv_handle(dl, &opts->bus_name, &opts->dev_name);
		if (err)
			return err;
		o_found |= DL_OPT_HANDLE;
	} else if (o_required & DL_OPT_HANDLEP) {
		err = dl_argv_handle_port(dl, &opts->bus_name, &opts->dev_name,
					  &opts->port_index);
		if (err)
			return err;
		o_found |= DL_OPT_HANDLEP;
	} else if (o_required & DL_OPT_HANDLE_REGION) {
		err = dl_argv_handle_region(dl, &opts->bus_name,
					    &opts->dev_name,
					    &opts->region_name);
		if (err)
			return err;
		o_found |= DL_OPT_HANDLE_REGION;
	}

	while (dl_argc(dl)) {
		if (dl_argv_match(dl, "type") &&
		    (o_all & DL_OPT_PORT_TYPE)) {
			const char *typestr;

			dl_arg_inc(dl);
			err = dl_argv_str(dl, &typestr);
			if (err)
				return err;
			err = port_type_get(typestr, &opts->port_type);
			if (err)
				return err;
			o_found |= DL_OPT_PORT_TYPE;
		} else if (dl_argv_match(dl, "count") &&
			   (o_all & DL_OPT_PORT_COUNT)) {
			dl_arg_inc(dl);
			err = dl_argv_uint32_t(dl, &opts->port_count);
			if (err)
				return err;
			o_found |= DL_OPT_PORT_COUNT;
		} else if (dl_argv_match(dl, "sb") &&
			   (o_all & DL_OPT_SB)) {
			dl_arg_inc(dl);
			err = dl_argv_uint32_t(dl, &opts->sb_index);
			if (err)
				return err;
			o_found |= DL_OPT_SB;
		} else if (dl_argv_match(dl, "pool") &&
			   (o_all & DL_OPT_SB_POOL)) {
			dl_arg_inc(dl);
			err = dl_argv_uint16_t(dl, &opts->sb_pool_index);
			if (err)
				return err;
			o_found |= DL_OPT_SB_POOL;
		} else if (dl_argv_match(dl, "size") &&
			   (o_all & DL_OPT_SB_SIZE)) {
			dl_arg_inc(dl);
			err = dl_argv_uint32_t(dl, &opts->sb_pool_size);
			if (err)
				return err;
			o_found |= DL_OPT_SB_SIZE;
		} else if (dl_argv_match(dl, "type") &&
			   (o_all & DL_OPT_SB_TYPE)) {
			const char *typestr;

			dl_arg_inc(dl);
			err = dl_argv_str(dl, &typestr);
			if (err)
				return err;
			err = pool_type_get(typestr, &opts->sb_pool_type);
			if (err)
				return err;
			o_found |= DL_OPT_SB_TYPE;
		} else if (dl_argv_match(dl, "thtype") &&
			   (o_all & DL_OPT_SB_THTYPE)) {
			const char *typestr;

			dl_arg_inc(dl);
			err = dl_argv_str(dl, &typestr);
			if (err)
				return err;
			err = threshold_type_get(typestr,
						 &opts->sb_pool_thtype);
			if (err)
				return err;
			o_found |= DL_OPT_SB_THTYPE;
		} else if (dl_argv_match(dl, "th") &&
			   (o_all & DL_OPT_SB_TH)) {
			dl_arg_inc(dl);
			err = dl_argv_uint32_t(dl, &opts->sb_threshold);
			if (err)
				return err;
			o_found |= DL_OPT_SB_TH;
		} else if (dl_argv_match(dl, "tc") &&
			   (o_all & DL_OPT_SB_TC)) {
			dl_arg_inc(dl);
			err = dl_argv_uint16_t(dl, &opts->sb_tc_index);
			if (err)
				return err;
			o_found |= DL_OPT_SB_TC;
		} else if (dl_argv_match(dl, "mode") &&
			   (o_all & DL_OPT_ESWITCH_MODE)) {
			const char *typestr;

			dl_arg_inc(dl);
			err = dl_argv_str(dl, &typestr);
			if (err)
				return err;
			err = eswitch_mode_get(typestr, &opts->eswitch_mode);
			if (err)
				return err;
			o_found |= DL_OPT_ESWITCH_MODE;
		} else if (dl_argv_match(dl, "inline-mode") &&
			   (o_all & DL_OPT_ESWITCH_INLINE_MODE)) {
			const char *typestr;

			dl_arg_inc(dl);
			err = dl_argv_str(dl, &typestr);
			if (err)
				return err;
			err = eswitch_inline_mode_get(
				typestr, &opts->eswitch_inline_mode);
			if (err)
				return err;
			o_found |= DL_OPT_ESWITCH_INLINE_MODE;
		} else if (dl_argv_match(dl, "name") &&
			   (o_all & DL_OPT_DPIPE_TABLE_NAME)) {
			dl_arg_inc(dl);
			err = dl_argv_str(dl, &opts->dpipe_table_name);
			if (err)
				return err;
			o_found |= DL_OPT_DPIPE_TABLE_NAME;
		} else if (dl_argv_match(dl, "counters") &&
			   (o_all & DL_OPT_DPIPE_TABLE_COUNTERS)) {
			const char *typestr;

			dl_arg_inc(dl);
			err = dl_argv_str(dl, &typestr);
			if (err)
				return err;
			err = dpipe_counters_enable_get(typestr,
							&opts->dpipe_counters_enable);
			if (err)
				return err;
			o_found |= DL_OPT_DPIPE_TABLE_COUNTERS;
		} else if (dl_argv_match(dl, "encap") &&
			   (o_all & DL_OPT_ESWITCH_ENCAP_MODE)) {
			const char *typestr;

			dl_arg_inc(dl);
			err = dl_argv_str(dl, &typestr);
			if (err)
				return err;
			err = eswitch_encap_mode_get(typestr,
						     &opts->eswitch_encap_mode);
			if (err)
				return err;
			o_found |= DL_OPT_ESWITCH_ENCAP_MODE;
		} else if (dl_argv_match(dl, "path") &&
			   (o_all & DL_OPT_RESOURCE_PATH)) {
			dl_arg_inc(dl);
			err = dl_argv_str(dl, &opts->resource_path);
			if (err)
				return err;
			o_found |= DL_OPT_RESOURCE_PATH;
		} else if (dl_argv_match(dl, "size") &&
			   (o_all & DL_OPT_RESOURCE_SIZE)) {
			dl_arg_inc(dl);
			err = dl_argv_uint32_t(dl, &opts->resource_size);
			if (err)
				return err;
			o_found |= DL_OPT_RESOURCE_SIZE;
		} else if (dl_argv_match(dl, "name") &&
			   (o_all & DL_OPT_PARAM_NAME)) {
			dl_arg_inc(dl);
			err = dl_argv_str(dl, &opts->param_name);
			if (err)
				return err;
			o_found |= DL_OPT_PARAM_NAME;
		} else if (dl_argv_match(dl, "value") &&
			   (o_all & DL_OPT_PARAM_VALUE)) {
			dl_arg_inc(dl);
			err = dl_argv_str(dl, &opts->param_value);
			if (err)
				return err;
			o_found |= DL_OPT_PARAM_VALUE;
		} else if (dl_argv_match(dl, "cmode") &&
			   (o_all & DL_OPT_PARAM_CMODE)) {
			const char *cmodestr;

			dl_arg_inc(dl);
			err = dl_argv_str(dl, &cmodestr);
			if (err)
				return err;
			err = param_cmode_get(cmodestr, &opts->cmode);
			if (err)
				return err;
			o_found |= DL_OPT_PARAM_CMODE;
		} else if (dl_argv_match(dl, "snapshot") &&
			   (o_all & DL_OPT_REGION_SNAPSHOT_ID)) {
			dl_arg_inc(dl);
			err = dl_argv_uint32_t(dl, &opts->region_snapshot_id);
			if (err)
				return err;
			o_found |= DL_OPT_REGION_SNAPSHOT_ID;
		} else if (dl_argv_match(dl, "address") &&
			   (o_all & DL_OPT_REGION_ADDRESS)) {
			dl_arg_inc(dl);
			err = dl_argv_uint64_t(dl, &opts->region_address);
			if (err)
				return err;
			o_found |= DL_OPT_REGION_ADDRESS;
		} else if (dl_argv_match(dl, "length") &&
			   (o_all & DL_OPT_REGION_LENGTH)) {
			dl_arg_inc(dl);
			err = dl_argv_uint64_t(dl, &opts->region_length);
			if (err)
				return err;
			o_found |= DL_OPT_REGION_LENGTH;
		} else if (dl_argv_match(dl, "file") &&
			   (o_all & DL_OPT_FLASH_FILE_NAME)) {
			dl_arg_inc(dl);
			err = dl_argv_str(dl, &opts->flash_file_name);
			if (err)
				return err;
			o_found |= DL_OPT_FLASH_FILE_NAME;
		} else if (dl_argv_match(dl, "component") &&
			   (o_all & DL_OPT_FLASH_COMPONENT)) {
			dl_arg_inc(dl);
			err = dl_argv_str(dl, &opts->flash_component);
			if (err)
				return err;
			o_found |= DL_OPT_FLASH_COMPONENT;
		} else if (dl_argv_match(dl, "reporter") &&
			   (o_all & DL_OPT_HEALTH_REPORTER_NAME)) {
			dl_arg_inc(dl);
			err = dl_argv_str(dl, &opts->reporter_name);
			if (err)
				return err;
			o_found |= DL_OPT_HEALTH_REPORTER_NAME;
		} else if (dl_argv_match(dl, "grace_period") &&
			   (o_all & DL_OPT_HEALTH_REPORTER_GRACEFUL_PERIOD)) {
			dl_arg_inc(dl);
			err = dl_argv_uint64_t(dl,
					       &opts->reporter_graceful_period);
			if (err)
				return err;
			o_found |= DL_OPT_HEALTH_REPORTER_GRACEFUL_PERIOD;
		} else if (dl_argv_match(dl, "auto_recover") &&
			(o_all & DL_OPT_HEALTH_REPORTER_AUTO_RECOVER)) {
			dl_arg_inc(dl);
			err = dl_argv_bool(dl, &opts->reporter_auto_recover);
			if (err)
				return err;
			o_found |= DL_OPT_HEALTH_REPORTER_AUTO_RECOVER;
		} else if (dl_argv_match(dl, "trap") &&
			   (o_all & DL_OPT_TRAP_NAME)) {
			dl_arg_inc(dl);
			err = dl_argv_str(dl, &opts->trap_name);
			if (err)
				return err;
			o_found |= DL_OPT_TRAP_NAME;
		} else if (dl_argv_match(dl, "group") &&
			   (o_all & DL_OPT_TRAP_GROUP_NAME)) {
			dl_arg_inc(dl);
			err = dl_argv_str(dl, &opts->trap_group_name);
			if (err)
				return err;
			o_found |= DL_OPT_TRAP_GROUP_NAME;
		} else if (dl_argv_match(dl, "action") &&
			   (o_all & DL_OPT_TRAP_ACTION)) {
			const char *actionstr;

			dl_arg_inc(dl);
			err = dl_argv_str(dl, &actionstr);
			if (err)
				return err;
			err = trap_action_get(actionstr, &opts->trap_action);
			if (err)
				return err;
			o_found |= DL_OPT_TRAP_ACTION;
		} else {
			pr_err("Unknown option \"%s\"\n", dl_argv(dl));
			return -EINVAL;
		}
	}

	opts->present = o_found;

	if ((o_optional & DL_OPT_SB) && !(o_found & DL_OPT_SB)) {
		opts->sb_index = 0;
		opts->present |= DL_OPT_SB;
	}

	return dl_args_finding_required_validate(o_required, o_found);
}

static void dl_opts_put(struct nlmsghdr *nlh, struct dl *dl)
{
	struct dl_opts *opts = &dl->opts;

	if (opts->present & DL_OPT_HANDLE) {
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_BUS_NAME, opts->bus_name);
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_DEV_NAME, opts->dev_name);
	} else if (opts->present & DL_OPT_HANDLEP) {
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_BUS_NAME, opts->bus_name);
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_DEV_NAME, opts->dev_name);
		mnl_attr_put_u32(nlh, DEVLINK_ATTR_PORT_INDEX,
				 opts->port_index);
	} else if (opts->present & DL_OPT_HANDLE_REGION) {
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_BUS_NAME, opts->bus_name);
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_DEV_NAME, opts->dev_name);
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_REGION_NAME,
				  opts->region_name);
	}
	if (opts->present & DL_OPT_PORT_TYPE)
		mnl_attr_put_u16(nlh, DEVLINK_ATTR_PORT_TYPE,
				 opts->port_type);
	if (opts->present & DL_OPT_PORT_COUNT)
		mnl_attr_put_u32(nlh, DEVLINK_ATTR_PORT_SPLIT_COUNT,
				 opts->port_count);
	if (opts->present & DL_OPT_SB)
		mnl_attr_put_u32(nlh, DEVLINK_ATTR_SB_INDEX,
				 opts->sb_index);
	if (opts->present & DL_OPT_SB_POOL)
		mnl_attr_put_u16(nlh, DEVLINK_ATTR_SB_POOL_INDEX,
				 opts->sb_pool_index);
	if (opts->present & DL_OPT_SB_SIZE)
		mnl_attr_put_u32(nlh, DEVLINK_ATTR_SB_POOL_SIZE,
				 opts->sb_pool_size);
	if (opts->present & DL_OPT_SB_TYPE)
		mnl_attr_put_u8(nlh, DEVLINK_ATTR_SB_POOL_TYPE,
				opts->sb_pool_type);
	if (opts->present & DL_OPT_SB_THTYPE)
		mnl_attr_put_u8(nlh, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
				opts->sb_pool_thtype);
	if (opts->present & DL_OPT_SB_TH)
		mnl_attr_put_u32(nlh, DEVLINK_ATTR_SB_THRESHOLD,
				 opts->sb_threshold);
	if (opts->present & DL_OPT_SB_TC)
		mnl_attr_put_u16(nlh, DEVLINK_ATTR_SB_TC_INDEX,
				 opts->sb_tc_index);
	if (opts->present & DL_OPT_ESWITCH_MODE)
		mnl_attr_put_u16(nlh, DEVLINK_ATTR_ESWITCH_MODE,
				 opts->eswitch_mode);
	if (opts->present & DL_OPT_ESWITCH_INLINE_MODE)
		mnl_attr_put_u8(nlh, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
				opts->eswitch_inline_mode);
	if (opts->present & DL_OPT_DPIPE_TABLE_NAME)
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_DPIPE_TABLE_NAME,
				  opts->dpipe_table_name);
	if (opts->present & DL_OPT_DPIPE_TABLE_COUNTERS)
		mnl_attr_put_u8(nlh, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
				opts->dpipe_counters_enable);
	if (opts->present & DL_OPT_ESWITCH_ENCAP_MODE)
		mnl_attr_put_u8(nlh, DEVLINK_ATTR_ESWITCH_ENCAP_MODE,
				opts->eswitch_encap_mode);
	if ((opts->present & DL_OPT_RESOURCE_PATH) && opts->resource_id_valid)
		mnl_attr_put_u64(nlh, DEVLINK_ATTR_RESOURCE_ID,
				 opts->resource_id);
	if (opts->present & DL_OPT_RESOURCE_SIZE)
		mnl_attr_put_u64(nlh, DEVLINK_ATTR_RESOURCE_SIZE,
				 opts->resource_size);
	if (opts->present & DL_OPT_PARAM_NAME)
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_PARAM_NAME,
				  opts->param_name);
	if (opts->present & DL_OPT_PARAM_CMODE)
		mnl_attr_put_u8(nlh, DEVLINK_ATTR_PARAM_VALUE_CMODE,
				opts->cmode);
	if (opts->present & DL_OPT_REGION_SNAPSHOT_ID)
		mnl_attr_put_u32(nlh, DEVLINK_ATTR_REGION_SNAPSHOT_ID,
				 opts->region_snapshot_id);
	if (opts->present & DL_OPT_REGION_ADDRESS)
		mnl_attr_put_u64(nlh, DEVLINK_ATTR_REGION_CHUNK_ADDR,
				 opts->region_address);
	if (opts->present & DL_OPT_REGION_LENGTH)
		mnl_attr_put_u64(nlh, DEVLINK_ATTR_REGION_CHUNK_LEN,
				 opts->region_length);
	if (opts->present & DL_OPT_FLASH_FILE_NAME)
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME,
				  opts->flash_file_name);
	if (opts->present & DL_OPT_FLASH_COMPONENT)
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
				  opts->flash_component);
	if (opts->present & DL_OPT_HEALTH_REPORTER_NAME)
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
				  opts->reporter_name);
	if (opts->present & DL_OPT_HEALTH_REPORTER_GRACEFUL_PERIOD)
		mnl_attr_put_u64(nlh,
				 DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
				 opts->reporter_graceful_period);
	if (opts->present & DL_OPT_HEALTH_REPORTER_AUTO_RECOVER)
		mnl_attr_put_u8(nlh, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
				opts->reporter_auto_recover);
	if (opts->present & DL_OPT_TRAP_NAME)
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_TRAP_NAME,
				  opts->trap_name);
	if (opts->present & DL_OPT_TRAP_GROUP_NAME)
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_TRAP_GROUP_NAME,
				  opts->trap_group_name);
	if (opts->present & DL_OPT_TRAP_ACTION)
		mnl_attr_put_u8(nlh, DEVLINK_ATTR_TRAP_ACTION,
				opts->trap_action);

}

static int dl_argv_parse_put(struct nlmsghdr *nlh, struct dl *dl,
			     uint64_t o_required, uint64_t o_optional)
{
	int err;

	err = dl_argv_parse(dl, o_required, o_optional);
	if (err)
		return err;
	dl_opts_put(nlh, dl);
	return 0;
}

static bool dl_dump_filter(struct dl *dl, struct nlattr **tb)
{
	struct dl_opts *opts = &dl->opts;
	struct nlattr *attr_bus_name = tb[DEVLINK_ATTR_BUS_NAME];
	struct nlattr *attr_dev_name = tb[DEVLINK_ATTR_DEV_NAME];
	struct nlattr *attr_port_index = tb[DEVLINK_ATTR_PORT_INDEX];
	struct nlattr *attr_sb_index = tb[DEVLINK_ATTR_SB_INDEX];

	if (opts->present & DL_OPT_HANDLE &&
	    attr_bus_name && attr_dev_name) {
		const char *bus_name = mnl_attr_get_str(attr_bus_name);
		const char *dev_name = mnl_attr_get_str(attr_dev_name);

		if (strcmp(bus_name, opts->bus_name) != 0 ||
		    strcmp(dev_name, opts->dev_name) != 0)
			return false;
	}
	if (opts->present & DL_OPT_HANDLEP &&
	    attr_bus_name && attr_dev_name && attr_port_index) {
		const char *bus_name = mnl_attr_get_str(attr_bus_name);
		const char *dev_name = mnl_attr_get_str(attr_dev_name);
		uint32_t port_index = mnl_attr_get_u32(attr_port_index);

		if (strcmp(bus_name, opts->bus_name) != 0 ||
		    strcmp(dev_name, opts->dev_name) != 0 ||
		    port_index != opts->port_index)
			return false;
	}
	if (opts->present & DL_OPT_SB && attr_sb_index) {
		uint32_t sb_index = mnl_attr_get_u32(attr_sb_index);

		if (sb_index != opts->sb_index)
			return false;
	}
	return true;
}

static void cmd_dev_help(void)
{
	pr_err("Usage: devlink dev show [ DEV ]\n");
	pr_err("       devlink dev eswitch set DEV [ mode { legacy | switchdev } ]\n");
	pr_err("                               [ inline-mode { none | link | network | transport } ]\n");
	pr_err("                               [ encap { disable | enable } ]\n");
	pr_err("       devlink dev eswitch show DEV\n");
	pr_err("       devlink dev param set DEV name PARAMETER value VALUE cmode { permanent | driverinit | runtime }\n");
	pr_err("       devlink dev param show [DEV name PARAMETER]\n");
	pr_err("       devlink dev reload DEV\n");
	pr_err("       devlink dev info [ DEV ]\n");
	pr_err("       devlink dev flash DEV file PATH [ component NAME ]\n");
}

static bool cmp_arr_last_handle(struct dl *dl, const char *bus_name,
				const char *dev_name)
{
	if (!dl->arr_last.present)
		return false;
	return strcmp(dl->arr_last.bus_name, bus_name) == 0 &&
	       strcmp(dl->arr_last.dev_name, dev_name) == 0;
}

static void arr_last_handle_set(struct dl *dl, const char *bus_name,
				const char *dev_name)
{
	dl->arr_last.present = true;
	free(dl->arr_last.dev_name);
	free(dl->arr_last.bus_name);
	dl->arr_last.bus_name = strdup(bus_name);
	dl->arr_last.dev_name = strdup(dev_name);
}

static bool should_arr_last_handle_start(struct dl *dl, const char *bus_name,
					 const char *dev_name)
{
	return !cmp_arr_last_handle(dl, bus_name, dev_name);
}

static bool should_arr_last_handle_end(struct dl *dl, const char *bus_name,
				       const char *dev_name)
{
	return dl->arr_last.present &&
	       !cmp_arr_last_handle(dl, bus_name, dev_name);
}

static void __pr_out_handle_start(struct dl *dl, struct nlattr **tb,
				  bool content, bool array)
{
	const char *bus_name = mnl_attr_get_str(tb[DEVLINK_ATTR_BUS_NAME]);
	const char *dev_name = mnl_attr_get_str(tb[DEVLINK_ATTR_DEV_NAME]);
	char buf[64];

	sprintf(buf, "%s/%s", bus_name, dev_name);

	if (dl->json_output) {
		if (array) {
			if (should_arr_last_handle_end(dl, bus_name, dev_name))
				jsonw_end_array(dl->jw);
			if (should_arr_last_handle_start(dl, bus_name,
							 dev_name)) {
				jsonw_name(dl->jw, buf);
				jsonw_start_array(dl->jw);
				jsonw_start_object(dl->jw);
				arr_last_handle_set(dl, bus_name, dev_name);
			} else {
				jsonw_start_object(dl->jw);
			}
		} else {
			jsonw_name(dl->jw, buf);
			jsonw_start_object(dl->jw);
		}
	} else {
		if (array) {
			if (should_arr_last_handle_end(dl, bus_name, dev_name))
				__pr_out_indent_dec();
			if (should_arr_last_handle_start(dl, bus_name,
							 dev_name)) {
				pr_out("%s%s", buf, content ? ":" : "");
				__pr_out_newline();
				__pr_out_indent_inc();
				arr_last_handle_set(dl, bus_name, dev_name);
			}
		} else {
			pr_out("%s%s", buf, content ? ":" : "");
		}
	}
}

static void pr_out_handle_start_arr(struct dl *dl, struct nlattr **tb)
{
	__pr_out_handle_start(dl, tb, true, true);
}

static void pr_out_handle_end(struct dl *dl)
{
	if (dl->json_output)
		jsonw_end_object(dl->jw);
	else
		__pr_out_newline();
}

static void pr_out_handle(struct dl *dl, struct nlattr **tb)
{
	__pr_out_handle_start(dl, tb, false, false);
	pr_out_handle_end(dl);
}

static bool cmp_arr_last_port_handle(struct dl *dl, const char *bus_name,
				     const char *dev_name, uint32_t port_index)
{
	return cmp_arr_last_handle(dl, bus_name, dev_name) &&
	       dl->arr_last.port_index == port_index;
}

static void arr_last_port_handle_set(struct dl *dl, const char *bus_name,
				     const char *dev_name, uint32_t port_index)
{
	arr_last_handle_set(dl, bus_name, dev_name);
	dl->arr_last.port_index = port_index;
}

static bool should_arr_last_port_handle_start(struct dl *dl,
					      const char *bus_name,
					      const char *dev_name,
					      uint32_t port_index)
{
	return !cmp_arr_last_port_handle(dl, bus_name, dev_name, port_index);
}

static bool should_arr_last_port_handle_end(struct dl *dl,
					    const char *bus_name,
					    const char *dev_name,
					    uint32_t port_index)
{
	return dl->arr_last.present &&
	       !cmp_arr_last_port_handle(dl, bus_name, dev_name, port_index);
}

static void __pr_out_port_handle_start(struct dl *dl, const char *bus_name,
				       const char *dev_name,
				       uint32_t port_index, bool try_nice,
				       bool array)
{
	static char buf[64];
	char *ifname = NULL;

	if (dl->no_nice_names || !try_nice ||
	    ifname_map_rev_lookup(dl, bus_name, dev_name,
				  port_index, &ifname) != 0)
		sprintf(buf, "%s/%s/%d", bus_name, dev_name, port_index);
	else
		sprintf(buf, "%s", ifname);

	if (dl->json_output) {
		if (array) {
			if (should_arr_last_port_handle_end(dl, bus_name,
							    dev_name,
							    port_index))
				jsonw_end_array(dl->jw);
			if (should_arr_last_port_handle_start(dl, bus_name,
							      dev_name,
							      port_index)) {
				jsonw_name(dl->jw, buf);
				jsonw_start_array(dl->jw);
				jsonw_start_object(dl->jw);
				arr_last_port_handle_set(dl, bus_name, dev_name,
							 port_index);
			} else {
				jsonw_start_object(dl->jw);
			}
		} else {
			jsonw_name(dl->jw, buf);
			jsonw_start_object(dl->jw);
		}
	} else {
		pr_out("%s:", buf);
	}
}

static void pr_out_port_handle_start(struct dl *dl, struct nlattr **tb, bool try_nice)
{
	const char *bus_name;
	const char *dev_name;
	uint32_t port_index;

	bus_name = mnl_attr_get_str(tb[DEVLINK_ATTR_BUS_NAME]);
	dev_name = mnl_attr_get_str(tb[DEVLINK_ATTR_DEV_NAME]);
	port_index = mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_INDEX]);
	__pr_out_port_handle_start(dl, bus_name, dev_name, port_index, try_nice, false);
}

static void pr_out_port_handle_start_arr(struct dl *dl, struct nlattr **tb, bool try_nice)
{
	const char *bus_name;
	const char *dev_name;
	uint32_t port_index;

	bus_name = mnl_attr_get_str(tb[DEVLINK_ATTR_BUS_NAME]);
	dev_name = mnl_attr_get_str(tb[DEVLINK_ATTR_DEV_NAME]);
	port_index = mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_INDEX]);
	__pr_out_port_handle_start(dl, bus_name, dev_name, port_index, try_nice, true);
}

static void pr_out_port_handle_end(struct dl *dl)
{
	if (dl->json_output)
		jsonw_end_object(dl->jw);
	else
		pr_out("\n");
}


static void pr_out_str(struct dl *dl, const char *name, const char *val)
{
	__pr_out_indent_newline(dl);
	if (dl->json_output)
		jsonw_string_field(dl->jw, name, val);
	else
		pr_out("%s %s", name, val);
}

static void pr_out_bool(struct dl *dl, const char *name, bool val)
{
	if (dl->json_output)
		jsonw_bool_field(dl->jw, name, val);
	else
		pr_out_str(dl, name, val ? "true" : "false");
}

static void pr_out_uint(struct dl *dl, const char *name, unsigned int val)
{
	__pr_out_indent_newline(dl);
	if (dl->json_output)
		jsonw_uint_field(dl->jw, name, val);
	else
		pr_out("%s %u", name, val);
}

static void pr_out_u64(struct dl *dl, const char *name, uint64_t val)
{
	__pr_out_indent_newline(dl);
	if (val == (uint64_t) -1)
		return pr_out_str(dl, name, "unlimited");

	if (dl->json_output)
		jsonw_u64_field(dl->jw, name, val);
	else
		pr_out("%s %"PRIu64, name, val);
}

static void pr_out_bool_value(struct dl *dl, bool value)
{
	__pr_out_indent_newline(dl);
	if (dl->json_output)
		jsonw_bool(dl->jw, value);
	else
		pr_out("%s", value ? "true" : "false");
}

static void pr_out_uint_value(struct dl *dl, unsigned int value)
{
	__pr_out_indent_newline(dl);
	if (dl->json_output)
		jsonw_uint(dl->jw, value);
	else
		pr_out("%u", value);
}

static void pr_out_uint64_value(struct dl *dl, uint64_t value)
{
	__pr_out_indent_newline(dl);
	if (dl->json_output)
		jsonw_u64(dl->jw, value);
	else
		pr_out("%"PRIu64, value);
}

static bool is_binary_eol(int i)
{
	return !(i%16);
}

static void pr_out_binary_value(struct dl *dl, uint8_t *data, uint32_t len)
{
	int i = 0;

	while (i < len) {
		if (dl->json_output)
			jsonw_printf(dl->jw, "%d", data[i]);
		else
			pr_out("%02x ", data[i]);
		i++;
		if (!dl->json_output && is_binary_eol(i))
			__pr_out_newline();
	}
	if (!dl->json_output && !is_binary_eol(i))
		__pr_out_newline();
}

static void pr_out_str_value(struct dl *dl, const char *value)
{
	__pr_out_indent_newline(dl);
	if (dl->json_output)
		jsonw_string(dl->jw, value);
	else
		pr_out("%s", value);
}

static void pr_out_name(struct dl *dl, const char *name)
{
	__pr_out_indent_newline(dl);
	if (dl->json_output)
		jsonw_name(dl->jw, name);
	else
		pr_out("%s:", name);
}

static void pr_out_region_chunk_start(struct dl *dl, uint64_t addr)
{
	if (dl->json_output) {
		jsonw_name(dl->jw, "address");
		jsonw_uint(dl->jw, addr);
		jsonw_name(dl->jw, "data");
		jsonw_start_array(dl->jw);
	}
}

static void pr_out_region_chunk_end(struct dl *dl)
{
	if (dl->json_output)
		jsonw_end_array(dl->jw);
}

static void pr_out_region_chunk(struct dl *dl, uint8_t *data, uint32_t len,
				uint64_t addr)
{
	static uint64_t align_val;
	uint32_t i = 0;

	pr_out_region_chunk_start(dl, addr);
	while (i < len) {
		if (!dl->json_output)
			if (!(align_val % 16))
				pr_out("%s%016"PRIx64" ",
				       align_val ? "\n" : "",
				       addr);

		align_val++;

		if (dl->json_output)
			jsonw_printf(dl->jw, "%d", data[i]);
		else
			pr_out("%02x ", data[i]);

		addr++;
		i++;
	}
	pr_out_region_chunk_end(dl);
}

static void pr_out_section_start(struct dl *dl, const char *name)
{
	if (dl->json_output) {
		jsonw_start_object(dl->jw);
		jsonw_name(dl->jw, name);
		jsonw_start_object(dl->jw);
	}
}

static void pr_out_section_end(struct dl *dl)
{
	if (dl->json_output) {
		if (dl->arr_last.present)
			jsonw_end_array(dl->jw);
		jsonw_end_object(dl->jw);
		jsonw_end_object(dl->jw);
	}
}

static void pr_out_array_start(struct dl *dl, const char *name)
{
	if (dl->json_output) {
		jsonw_name(dl->jw, name);
		jsonw_start_array(dl->jw);
	} else {
		__pr_out_indent_inc();
		__pr_out_newline();
		pr_out("%s:", name);
		__pr_out_indent_inc();
		__pr_out_newline();
	}
}

static void pr_out_array_end(struct dl *dl)
{
	if (dl->json_output) {
		jsonw_end_array(dl->jw);
	} else {
		__pr_out_indent_dec();
		__pr_out_indent_dec();
	}
}

static void pr_out_object_start(struct dl *dl, const char *name)
{
	if (dl->json_output) {
		jsonw_name(dl->jw, name);
		jsonw_start_object(dl->jw);
	} else {
		__pr_out_indent_inc();
		__pr_out_newline();
		pr_out("%s:", name);
		__pr_out_indent_inc();
		__pr_out_newline();
	}
}

static void pr_out_object_end(struct dl *dl)
{
	if (dl->json_output) {
		jsonw_end_object(dl->jw);
	} else {
		__pr_out_indent_dec();
		__pr_out_indent_dec();
	}
}

static void pr_out_entry_start(struct dl *dl)
{
	if (dl->json_output)
		jsonw_start_object(dl->jw);
}

static void pr_out_entry_end(struct dl *dl)
{
	if (dl->json_output)
		jsonw_end_object(dl->jw);
	else
		__pr_out_newline();
}

static void pr_out_stats(struct dl *dl, struct nlattr *nla_stats)
{
	struct nlattr *tb[DEVLINK_ATTR_STATS_MAX + 1] = {};
	int err;

	if (!dl->stats)
		return;

	err = mnl_attr_parse_nested(nla_stats, attr_stats_cb, tb);
	if (err != MNL_CB_OK)
		return;

	pr_out_object_start(dl, "stats");
	pr_out_object_start(dl, "rx");
	if (tb[DEVLINK_ATTR_STATS_RX_BYTES])
		pr_out_u64(dl, "bytes",
			   mnl_attr_get_u64(tb[DEVLINK_ATTR_STATS_RX_BYTES]));
	if (tb[DEVLINK_ATTR_STATS_RX_PACKETS])
		pr_out_u64(dl, "packets",
			   mnl_attr_get_u64(tb[DEVLINK_ATTR_STATS_RX_PACKETS]));
	pr_out_object_end(dl);
	pr_out_object_end(dl);
}

static const char *param_cmode_name(uint8_t cmode)
{
	switch (cmode) {
	case DEVLINK_PARAM_CMODE_RUNTIME:
		return PARAM_CMODE_RUNTIME_STR;
	case DEVLINK_PARAM_CMODE_DRIVERINIT:
		return PARAM_CMODE_DRIVERINIT_STR;
	case DEVLINK_PARAM_CMODE_PERMANENT:
		return PARAM_CMODE_PERMANENT_STR;
	default: return "<unknown type>";
	}
}

static const char *eswitch_mode_name(uint32_t mode)
{
	switch (mode) {
	case DEVLINK_ESWITCH_MODE_LEGACY: return ESWITCH_MODE_LEGACY;
	case DEVLINK_ESWITCH_MODE_SWITCHDEV: return ESWITCH_MODE_SWITCHDEV;
	default: return "<unknown mode>";
	}
}

static const char *eswitch_inline_mode_name(uint32_t mode)
{
	switch (mode) {
	case DEVLINK_ESWITCH_INLINE_MODE_NONE:
		return ESWITCH_INLINE_MODE_NONE;
	case DEVLINK_ESWITCH_INLINE_MODE_LINK:
		return ESWITCH_INLINE_MODE_LINK;
	case DEVLINK_ESWITCH_INLINE_MODE_NETWORK:
		return ESWITCH_INLINE_MODE_NETWORK;
	case DEVLINK_ESWITCH_INLINE_MODE_TRANSPORT:
		return ESWITCH_INLINE_MODE_TRANSPORT;
	default:
		return "<unknown mode>";
	}
}

static void pr_out_eswitch(struct dl *dl, struct nlattr **tb)
{
	__pr_out_handle_start(dl, tb, true, false);

	if (tb[DEVLINK_ATTR_ESWITCH_MODE])
		pr_out_str(dl, "mode",
			   eswitch_mode_name(mnl_attr_get_u16(tb[DEVLINK_ATTR_ESWITCH_MODE])));

	if (tb[DEVLINK_ATTR_ESWITCH_INLINE_MODE])
		pr_out_str(dl, "inline-mode",
			   eswitch_inline_mode_name(mnl_attr_get_u8(
				   tb[DEVLINK_ATTR_ESWITCH_INLINE_MODE])));

	if (tb[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
		bool encap_mode = !!mnl_attr_get_u8(tb[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);

		pr_out_str(dl, "encap", encap_mode ? "enable" : "disable");
	}

	pr_out_handle_end(dl);
}

static int cmd_dev_eswitch_show_cb(const struct nlmsghdr *nlh, void *data)
{
	struct dl *dl = data;
	struct nlattr *tb[DEVLINK_ATTR_MAX + 1] = {};
	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);

	mnl_attr_parse(nlh, sizeof(*genl), attr_cb, tb);
	if (!tb[DEVLINK_ATTR_BUS_NAME] || !tb[DEVLINK_ATTR_DEV_NAME])
		return MNL_CB_ERROR;
	pr_out_eswitch(dl, tb);
	return MNL_CB_OK;
}

static int cmd_dev_eswitch_show(struct dl *dl)
{
	struct nlmsghdr *nlh;
	int err;

	nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_ESWITCH_GET,
			       NLM_F_REQUEST | NLM_F_ACK);

	err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLE, 0);
	if (err)
		return err;

	pr_out_section_start(dl, "dev");
	err = _mnlg_socket_sndrcv(dl->nlg, nlh, cmd_dev_eswitch_show_cb, dl);
	pr_out_section_end(dl);
	return err;
}

static int cmd_dev_eswitch_set(struct dl *dl)
{
	struct nlmsghdr *nlh;
	int err;

	nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_ESWITCH_SET,
			       NLM_F_REQUEST | NLM_F_ACK);

	err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLE,
				DL_OPT_ESWITCH_MODE |
				DL_OPT_ESWITCH_INLINE_MODE |
				DL_OPT_ESWITCH_ENCAP_MODE);

	if (err)
		return err;

	if (dl->opts.present == 1) {
		pr_err("Need to set at least one option\n");
		return -ENOENT;
	}

	return _mnlg_socket_sndrcv(dl->nlg, nlh, NULL, NULL);
}

static int cmd_dev_eswitch(struct dl *dl)
{
	if (dl_argv_match(dl, "help") || dl_no_arg(dl)) {
		cmd_dev_help();
		return 0;
	} else if (dl_argv_match(dl, "set")) {
		dl_arg_inc(dl);
		return cmd_dev_eswitch_set(dl);
	} else if (dl_argv_match(dl, "show")) {
		dl_arg_inc(dl);
		return cmd_dev_eswitch_show(dl);
	}
	pr_err("Command \"%s\" not found\n", dl_argv(dl));
	return -ENOENT;
}

struct param_val_conv {
	const char *name;
	const char *vstr;
	uint32_t vuint;
};

static bool param_val_conv_exists(const struct param_val_conv *param_val_conv,
				  uint32_t len, const char *name)
{
	uint32_t i;

	for (i = 0; i < len; i++)
		if (!strcmp(param_val_conv[i].name, name))
			return true;

	return false;
}

static int
param_val_conv_uint_get(const struct param_val_conv *param_val_conv,
			uint32_t len, const char *name, const char *vstr,
			uint32_t *vuint)
{
	uint32_t i;

	for (i = 0; i < len; i++)
		if (!strcmp(param_val_conv[i].name, name) &&
		    !strcmp(param_val_conv[i].vstr, vstr)) {
			*vuint = param_val_conv[i].vuint;
			return 0;
		}

	return -ENOENT;
}

static int
param_val_conv_str_get(const struct param_val_conv *param_val_conv,
		       uint32_t len, const char *name, uint32_t vuint,
		       const char **vstr)
{
	uint32_t i;

	for (i = 0; i < len; i++)
		if (!strcmp(param_val_conv[i].name, name) &&
		    param_val_conv[i].vuint == vuint) {
			*vstr = param_val_conv[i].vstr;
			return 0;
		}

	return -ENOENT;
}

static const struct param_val_conv param_val_conv[] = {
	{
		.name = "fw_load_policy",
		.vstr = "driver",
		.vuint = DEVLINK_PARAM_FW_LOAD_POLICY_VALUE_DRIVER,
	},
	{
		.name = "fw_load_policy",
		.vstr = "flash",
		.vuint = DEVLINK_PARAM_FW_LOAD_POLICY_VALUE_FLASH,
	},
	{
		.name = "reset_dev_on_drv_probe",
		.vstr = "unknown",
		.vuint = DEVLINK_PARAM_RESET_DEV_ON_DRV_PROBE_VALUE_UNKNOWN,
	},
	{
		.name = "fw_load_policy",
		.vstr = "unknown",
		.vuint = DEVLINK_PARAM_FW_LOAD_POLICY_VALUE_UNKNOWN,
	},
	{
		.name = "reset_dev_on_drv_probe",
		.vstr = "always",
		.vuint = DEVLINK_PARAM_RESET_DEV_ON_DRV_PROBE_VALUE_ALWAYS,
	},
	{
		.name = "reset_dev_on_drv_probe",
		.vstr = "never",
		.vuint = DEVLINK_PARAM_RESET_DEV_ON_DRV_PROBE_VALUE_NEVER,
	},
	{
		.name = "reset_dev_on_drv_probe",
		.vstr = "disk",
		.vuint = DEVLINK_PARAM_RESET_DEV_ON_DRV_PROBE_VALUE_DISK,
	},
};

#define PARAM_VAL_CONV_LEN ARRAY_SIZE(param_val_conv)

static void pr_out_param_value(struct dl *dl, const char *nla_name,
			       int nla_type, struct nlattr *nl)
{
	struct nlattr *nla_value[DEVLINK_ATTR_MAX + 1] = {};
	struct nlattr *val_attr;
	const char *vstr;
	bool conv_exists;
	int err;

	err = mnl_attr_parse_nested(nl, attr_cb, nla_value);
	if (err != MNL_CB_OK)
		return;

	if (!nla_value[DEVLINK_ATTR_PARAM_VALUE_CMODE] ||
	    (nla_type != MNL_TYPE_FLAG &&
	     !nla_value[DEVLINK_ATTR_PARAM_VALUE_DATA]))
		return;

	pr_out_str(dl, "cmode",
		   param_cmode_name(mnl_attr_get_u8(nla_value[DEVLINK_ATTR_PARAM_VALUE_CMODE])));
	val_attr = nla_value[DEVLINK_ATTR_PARAM_VALUE_DATA];

	conv_exists = param_val_conv_exists(param_val_conv, PARAM_VAL_CONV_LEN,
					    nla_name);

	switch (nla_type) {
	case MNL_TYPE_U8:
		if (conv_exists) {
			err = param_val_conv_str_get(param_val_conv,
						     PARAM_VAL_CONV_LEN,
						     nla_name,
						     mnl_attr_get_u8(val_attr),
						     &vstr);
			if (err)
				return;
			pr_out_str(dl, "value", vstr);
		} else {
			pr_out_uint(dl, "value", mnl_attr_get_u8(val_attr));
		}
		break;
	case MNL_TYPE_U16:
		if (conv_exists) {
			err = param_val_conv_str_get(param_val_conv,
						     PARAM_VAL_CONV_LEN,
						     nla_name,
						     mnl_attr_get_u16(val_attr),
						     &vstr);
			if (err)
				return;
			pr_out_str(dl, "value", vstr);
		} else {
			pr_out_uint(dl, "value", mnl_attr_get_u16(val_attr));
		}
		break;
	case MNL_TYPE_U32:
		if (conv_exists) {
			err = param_val_conv_str_get(param_val_conv,
						     PARAM_VAL_CONV_LEN,
						     nla_name,
						     mnl_attr_get_u32(val_attr),
						     &vstr);
			if (err)
				return;
			pr_out_str(dl, "value", vstr);
		} else {
			pr_out_uint(dl, "value", mnl_attr_get_u32(val_attr));
		}
		break;
	case MNL_TYPE_STRING:
		pr_out_str(dl, "value", mnl_attr_get_str(val_attr));
		break;
	case MNL_TYPE_FLAG:
		pr_out_bool(dl, "value", val_attr ? true : false);
		break;
	}
}

static void pr_out_param(struct dl *dl, struct nlattr **tb, bool array)
{
	struct nlattr *nla_param[DEVLINK_ATTR_MAX + 1] = {};
	struct nlattr *param_value_attr;
	const char *nla_name;
	int nla_type;
	int err;

	err = mnl_attr_parse_nested(tb[DEVLINK_ATTR_PARAM], attr_cb, nla_param);
	if (err != MNL_CB_OK)
		return;
	if (!nla_param[DEVLINK_ATTR_PARAM_NAME] ||
	    !nla_param[DEVLINK_ATTR_PARAM_TYPE] ||
	    !nla_param[DEVLINK_ATTR_PARAM_VALUES_LIST])
		return;

	if (array)
		pr_out_handle_start_arr(dl, tb);
	else
		__pr_out_handle_start(dl, tb, true, false);

	nla_type = mnl_attr_get_u8(nla_param[DEVLINK_ATTR_PARAM_TYPE]);

	nla_name = mnl_attr_get_str(nla_param[DEVLINK_ATTR_PARAM_NAME]);
	pr_out_str(dl, "name", nla_name);

	if (!nla_param[DEVLINK_ATTR_PARAM_GENERIC])
		pr_out_str(dl, "type", "driver-specific");
	else
		pr_out_str(dl, "type", "generic");

	pr_out_array_start(dl, "values");
	mnl_attr_for_each_nested(param_value_attr,
				 nla_param[DEVLINK_ATTR_PARAM_VALUES_LIST]) {
		pr_out_entry_start(dl);
		pr_out_param_value(dl, nla_name, nla_type, param_value_attr);
		pr_out_entry_end(dl);
	}
	pr_out_array_end(dl);
	pr_out_handle_end(dl);
}

static int cmd_dev_param_show_cb(const struct nlmsghdr *nlh, void *data)
{
	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
	struct nlattr *tb[DEVLINK_ATTR_MAX + 1] = {};
	struct dl *dl = data;

	mnl_attr_parse(nlh, sizeof(*genl), attr_cb, tb);
	if (!tb[DEVLINK_ATTR_BUS_NAME] || !tb[DEVLINK_ATTR_DEV_NAME] ||
	    !tb[DEVLINK_ATTR_PARAM])
		return MNL_CB_ERROR;
	pr_out_param(dl, tb, true);
	return MNL_CB_OK;
}

struct param_ctx {
	struct dl *dl;
	int nla_type;
	union {
		uint8_t vu8;
		uint16_t vu16;
		uint32_t vu32;
		const char *vstr;
		bool vbool;
	} value;
};

static int cmd_dev_param_set_cb(const struct nlmsghdr *nlh, void *data)
{
	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
	struct nlattr *nla_param[DEVLINK_ATTR_MAX + 1] = {};
	struct nlattr *tb[DEVLINK_ATTR_MAX + 1] = {};
	struct nlattr *param_value_attr;
	enum devlink_param_cmode cmode;
	struct param_ctx *ctx = data;
	struct dl *dl = ctx->dl;
	int nla_type;
	int err;

	mnl_attr_parse(nlh, sizeof(*genl), attr_cb, tb);
	if (!tb[DEVLINK_ATTR_BUS_NAME] || !tb[DEVLINK_ATTR_DEV_NAME] ||
	    !tb[DEVLINK_ATTR_PARAM])
		return MNL_CB_ERROR;

	err = mnl_attr_parse_nested(tb[DEVLINK_ATTR_PARAM], attr_cb, nla_param);
	if (err != MNL_CB_OK)
		return MNL_CB_ERROR;

	if (!nla_param[DEVLINK_ATTR_PARAM_TYPE] ||
	    !nla_param[DEVLINK_ATTR_PARAM_VALUES_LIST])
		return MNL_CB_ERROR;

	nla_type = mnl_attr_get_u8(nla_param[DEVLINK_ATTR_PARAM_TYPE]);
	mnl_attr_for_each_nested(param_value_attr,
				 nla_param[DEVLINK_ATTR_PARAM_VALUES_LIST]) {
		struct nlattr *nla_value[DEVLINK_ATTR_MAX + 1] = {};
		struct nlattr *val_attr;

		err = mnl_attr_parse_nested(param_value_attr,
					    attr_cb, nla_value);
		if (err != MNL_CB_OK)
			return MNL_CB_ERROR;

		if (!nla_value[DEVLINK_ATTR_PARAM_VALUE_CMODE] ||
		    (nla_type != MNL_TYPE_FLAG &&
		     !nla_value[DEVLINK_ATTR_PARAM_VALUE_DATA]))
			return MNL_CB_ERROR;

		cmode = mnl_attr_get_u8(nla_value[DEVLINK_ATTR_PARAM_VALUE_CMODE]);
		if (cmode == dl->opts.cmode) {
			val_attr = nla_value[DEVLINK_ATTR_PARAM_VALUE_DATA];
			switch (nla_type) {
			case MNL_TYPE_U8:
				ctx->value.vu8 = mnl_attr_get_u8(val_attr);
				break;
			case MNL_TYPE_U16:
				ctx->value.vu16 = mnl_attr_get_u16(val_attr);
				break;
			case MNL_TYPE_U32:
				ctx->value.vu32 = mnl_attr_get_u32(val_attr);
				break;
			case MNL_TYPE_STRING:
				ctx->value.vstr = mnl_attr_get_str(val_attr);
				break;
			case MNL_TYPE_FLAG:
				ctx->value.vbool = val_attr ? true : false;
				break;
			}
			break;
		}
	}
	ctx->nla_type = nla_type;
	return MNL_CB_OK;
}

static int cmd_dev_param_set(struct dl *dl)
{
	struct param_ctx ctx = {};
	struct nlmsghdr *nlh;
	bool conv_exists;
	uint32_t val_u32;
	uint16_t val_u16;
	uint8_t val_u8;
	bool val_bool;
	int err;

	err = dl_argv_parse(dl, DL_OPT_HANDLE |
			    DL_OPT_PARAM_NAME |
			    DL_OPT_PARAM_VALUE |
			    DL_OPT_PARAM_CMODE, 0);
	if (err)
		return err;

	/* Get value type */
	nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_PARAM_GET,
			       NLM_F_REQUEST | NLM_F_ACK);
	dl_opts_put(nlh, dl);

	ctx.dl = dl;
	err = _mnlg_socket_sndrcv(dl->nlg, nlh, cmd_dev_param_set_cb, &ctx);
	if (err)
		return err;

	nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_PARAM_SET,
			       NLM_F_REQUEST | NLM_F_ACK);
	dl_opts_put(nlh, dl);

	conv_exists = param_val_conv_exists(param_val_conv, PARAM_VAL_CONV_LEN,
					    dl->opts.param_name);

	mnl_attr_put_u8(nlh, DEVLINK_ATTR_PARAM_TYPE, ctx.nla_type);
	switch (ctx.nla_type) {
	case MNL_TYPE_U8:
		if (conv_exists) {
			err = param_val_conv_uint_get(param_val_conv,
						      PARAM_VAL_CONV_LEN,
						      dl->opts.param_name,
						      dl->opts.param_value,
						      &val_u32);
			val_u8 = val_u32;
		} else {
			err = strtouint8_t(dl->opts.param_value, &val_u8);
		}
		if (err)
			goto err_param_value_parse;
		if (val_u8 == ctx.value.vu8)
			return 0;
		mnl_attr_put_u8(nlh, DEVLINK_ATTR_PARAM_VALUE_DATA, val_u8);
		break;
	case MNL_TYPE_U16:
		if (conv_exists) {
			err = param_val_conv_uint_get(param_val_conv,
						      PARAM_VAL_CONV_LEN,
						      dl->opts.param_name,
						      dl->opts.param_value,
						      &val_u32);
			val_u16 = val_u32;
		} else {
			err = strtouint16_t(dl->opts.param_value, &val_u16);
		}
		if (err)
			goto err_param_value_parse;
		if (val_u16 == ctx.value.vu16)
			return 0;
		mnl_attr_put_u16(nlh, DEVLINK_ATTR_PARAM_VALUE_DATA, val_u16);
		break;
	case MNL_TYPE_U32:
		if (conv_exists)
			err = param_val_conv_uint_get(param_val_conv,
						      PARAM_VAL_CONV_LEN,
						      dl->opts.param_name,
						      dl->opts.param_value,
						      &val_u32);
		else
			err = strtouint32_t(dl->opts.param_value, &val_u32);
		if (err)
			goto err_param_value_parse;
		if (val_u32 == ctx.value.vu32)
			return 0;
		mnl_attr_put_u32(nlh, DEVLINK_ATTR_PARAM_VALUE_DATA, val_u32);
		break;
	case MNL_TYPE_FLAG:
		err = strtobool(dl->opts.param_value, &val_bool);
		if (err)
			goto err_param_value_parse;
		if (val_bool == ctx.value.vbool)
			return 0;
		if (val_bool)
			mnl_attr_put(nlh, DEVLINK_ATTR_PARAM_VALUE_DATA,
				     0, NULL);
		break;
	case MNL_TYPE_STRING:
		mnl_attr_put_strz(nlh, DEVLINK_ATTR_PARAM_VALUE_DATA,
				  dl->opts.param_value);
		if (!strcmp(dl->opts.param_value, ctx.value.vstr))
			return 0;
		break;
	default:
		printf("Value type not supported\n");
		return -ENOTSUP;
	}
	return _mnlg_socket_sndrcv(dl->nlg, nlh, NULL, NULL);

err_param_value_parse:
	pr_err("Value \"%s\" is not a number or not within range\n",
	       dl->opts.param_value);
	return err;
}

static int cmd_dev_param_show(struct dl *dl)
{
	uint16_t flags = NLM_F_REQUEST | NLM_F_ACK;
	struct nlmsghdr *nlh;
	int err;

	if (dl_argc(dl) == 0)
		flags |= NLM_F_DUMP;

	nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_PARAM_GET, flags);

	if (dl_argc(dl) > 0) {
		err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLE |
					DL_OPT_PARAM_NAME, 0);
		if (err)
			return err;
	}

	pr_out_section_start(dl, "param");
	err = _mnlg_socket_sndrcv(dl->nlg, nlh, cmd_dev_param_show_cb, dl);
	pr_out_section_end(dl);
	return err;
}

static int cmd_dev_param(struct dl *dl)
{
	if (dl_argv_match(dl, "help")) {
		cmd_dev_help();
		return 0;
	} else if (dl_argv_match(dl, "show") ||
		   dl_argv_match(dl, "list") || dl_no_arg(dl)) {
		dl_arg_inc(dl);
		return cmd_dev_param_show(dl);
	} else if (dl_argv_match(dl, "set")) {
		dl_arg_inc(dl);
		return cmd_dev_param_set(dl);
	}
	pr_err("Command \"%s\" not found\n", dl_argv(dl));
	return -ENOENT;
}
static int cmd_dev_show_cb(const struct nlmsghdr *nlh, void *data)
{
	struct dl *dl = data;
	struct nlattr *tb[DEVLINK_ATTR_MAX + 1] = {};
	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
	uint8_t reload_failed = 0;

	mnl_attr_parse(nlh, sizeof(*genl), attr_cb, tb);
	if (!tb[DEVLINK_ATTR_BUS_NAME] || !tb[DEVLINK_ATTR_DEV_NAME])
		return MNL_CB_ERROR;

	if (tb[DEVLINK_ATTR_RELOAD_FAILED])
		reload_failed = mnl_attr_get_u8(tb[DEVLINK_ATTR_RELOAD_FAILED]);

	if (reload_failed) {
		__pr_out_handle_start(dl, tb, true, false);
		pr_out_bool(dl, "reload_failed", true);
		pr_out_handle_end(dl);
	} else {
		pr_out_handle(dl, tb);
	}

	return MNL_CB_OK;
}

static int cmd_dev_show(struct dl *dl)
{
	struct nlmsghdr *nlh;
	uint16_t flags = NLM_F_REQUEST | NLM_F_ACK;
	int err;

	if (dl_argc(dl) == 0)
		flags |= NLM_F_DUMP;

	nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_GET, flags);

	if (dl_argc(dl) > 0) {
		err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLE, 0);
		if (err)
			return err;
	}

	pr_out_section_start(dl, "dev");
	err = _mnlg_socket_sndrcv(dl->nlg, nlh, cmd_dev_show_cb, dl);
	pr_out_section_end(dl);
	return err;
}

static void cmd_dev_reload_help(void)
{
	pr_err("Usage: devlink dev reload [ DEV ]\n");
}

static int cmd_dev_reload(struct dl *dl)
{
	struct nlmsghdr *nlh;
	int err;

	if (dl_argv_match(dl, "help") || dl_no_arg(dl)) {
		cmd_dev_reload_help();
		return 0;
	}

	nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_RELOAD,
			       NLM_F_REQUEST | NLM_F_ACK);

	err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLE, 0);
	if (err)
		return err;

	return _mnlg_socket_sndrcv(dl->nlg, nlh, NULL, NULL);
}

static void pr_out_versions_single(struct dl *dl, const struct nlmsghdr *nlh,
				   const char *name, int type)
{
	struct nlattr *version;

	mnl_attr_for_each(version, nlh, sizeof(struct genlmsghdr)) {
		struct nlattr *tb[DEVLINK_ATTR_MAX + 1] = {};
		const char *ver_value;
		const char *ver_name;
		int err;

		if (mnl_attr_get_type(version) != type)
			continue;

		err = mnl_attr_parse_nested(version, attr_cb, tb);
		if (err != MNL_CB_OK)
			continue;

		if (!tb[DEVLINK_ATTR_INFO_VERSION_NAME] ||
		    !tb[DEVLINK_ATTR_INFO_VERSION_VALUE])
			continue;

		if (name) {
			pr_out_object_start(dl, name);
			name = NULL;
		}

		ver_name = mnl_attr_get_str(tb[DEVLINK_ATTR_INFO_VERSION_NAME]);
		ver_value = mnl_attr_get_str(tb[DEVLINK_ATTR_INFO_VERSION_VALUE]);

		pr_out_str(dl, ver_name, ver_value);
		if (!dl->json_output)
			__pr_out_newline();
	}

	if (!name)
		pr_out_object_end(dl);
}

static void pr_out_info(struct dl *dl, const struct nlmsghdr *nlh,
			struct nlattr **tb, bool has_versions)
{
	__pr_out_handle_start(dl, tb, true, false);

	__pr_out_indent_inc();
	if (tb[DEVLINK_ATTR_INFO_DRIVER_NAME]) {
		struct nlattr *nla_drv = tb[DEVLINK_ATTR_INFO_DRIVER_NAME];

		if (!dl->json_output)
			__pr_out_newline();
		pr_out_str(dl, "driver", mnl_attr_get_str(nla_drv));
	}

	if (tb[DEVLINK_ATTR_INFO_SERIAL_NUMBER]) {
		struct nlattr *nla_sn = tb[DEVLINK_ATTR_INFO_SERIAL_NUMBER];

		if (!dl->json_output)
			__pr_out_newline();
		pr_out_str(dl, "serial_number", mnl_attr_get_str(nla_sn));
	}
	__pr_out_indent_dec();

	if (has_versions) {
		pr_out_object_start(dl, "versions");

		pr_out_versions_single(dl, nlh, "fixed",
				       DEVLINK_ATTR_INFO_VERSION_FIXED);
		pr_out_versions_single(dl, nlh, "running",
				       DEVLINK_ATTR_INFO_VERSION_RUNNING);
		pr_out_versions_single(dl, nlh, "stored",
				       DEVLINK_ATTR_INFO_VERSION_STORED);

		pr_out_object_end(dl);
	}

	pr_out_handle_end(dl);
}

static int cmd_versions_show_cb(const struct nlmsghdr *nlh, void *data)
{
	struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
	struct nlattr *tb[DEVLINK_ATTR_MAX + 1] = {};
	bool has_versions, has_info;
	struct dl *dl = data;

	mnl_attr_parse(nlh, sizeof(*genl), attr_cb, tb);

	if (!tb[DEVLINK_ATTR_BUS_NAME] || !tb[DEVLINK_ATTR_DEV_NAME])
		return MNL_CB_ERROR;

	has_versions = tb[DEVLINK_ATTR_INFO_VERSION_FIXED] ||
		tb[DEVLINK_ATTR_INFO_VERSION_RUNNING] ||
		tb[DEVLINK_ATTR_INFO_VERSION_STORED];
	has_info = tb[DEVLINK_ATTR_INFO_DRIVER_NAME] ||
		tb[DEVLINK_ATTR_INFO_SERIAL_NUMBER] ||
		has_versions;

	if (has_info)
		pr_out_info(dl, nlh, tb, has_versions);

	return MNL_CB_OK;
}

static void cmd_dev_info_help(void)
{
	pr_err("Usage: devlink dev info [ DEV ]\n");
}

static int cmd_dev_info(struct dl *dl)
{
	struct nlmsghdr *nlh;
	uint16_t flags = NLM_F_REQUEST | NLM_F_ACK;
	int err;

	if (dl_argv_match(dl, "help")) {
		cmd_dev_info_help();
		return 0;
	}

	if (dl_argc(dl) == 0)
		flags |= NLM_F_DUMP;

	nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_INFO_GET, flags);

	if (dl_argc(dl) > 0) {
		err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLE, 0);
		if (err)
			return err;
	}

	pr_out_section_start(dl, "info");
	err = _mnlg_socket_sndrcv(dl->nlg, nlh, cmd_versions_show_cb, dl);
	pr_out_section_end(dl);
	return err;
}