[thirdparty/iw.git] / mesh.c

#include <net/if.h>
#include <errno.h>
#include <string.h>

#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/genl/ctrl.h>
#include <netlink/msg.h>
#include <netlink/attr.h>

#include "nl80211.h"
#include "iw.h"

SECTION(mesh);


typedef struct _any_t {
	union {
		uint32_t as_32;
		uint16_t as_16;
		uint8_t as_8;
	} u;
} _any;

/* describes a mesh parameter */
struct mesh_param_descr {
	const char *name;
	enum nl80211_meshconf_params mesh_param_num;
	int (*nla_put_fn)(struct nl_msg*, int, _any*);
	uint32_t (*parse_fn)(const char*, _any*);
	void (*nla_print_fn)(struct nlattr *);
};

/* utility functions for manipulating and printing u8/u16/u32 values and
 * timesouts. */
static int _my_nla_put_u8(struct nl_msg *n, int mesh_param_num, _any *value)
{
	return nla_put(n, mesh_param_num, sizeof(uint8_t), &value->u.as_8);
}

static int _my_nla_put_u16(struct nl_msg *n, int mesh_param_num, _any *value)
{
	return nla_put(n, mesh_param_num, sizeof(uint16_t), &value->u.as_16);
}

static int _my_nla_put_u32(struct nl_msg *n, int mesh_param_num, _any *value)
{
	return nla_put(n, mesh_param_num, sizeof(uint32_t), &value->u.as_32);
}

static uint32_t _parse_u8(const char *str, _any *ret)
{
	char *endptr = NULL;
	unsigned long int v = strtoul(str, &endptr, 10);
	if (*endptr != '\0')
		return 0xff;
	if (v > 0xff)
		return 0xff;
	ret->u.as_8 = (uint8_t)v;
	return 0;
}

static uint32_t _parse_u8_as_bool(const char *str, _any *ret)
{
	char *endptr = NULL;
	unsigned long int v = strtoul(str, &endptr, 10);
	if (*endptr != '\0')
		return 0x1;
	if (v > 0x1)
		return 0x1;
	ret->u.as_8 = (uint8_t)v;
	return 0;
}

static uint32_t _parse_u16(const char *str, _any *ret)
{
	char *endptr = NULL;
	long int v = strtol(str, &endptr, 10);
	if (*endptr != '\0')
		return 0xffff;
	if ((v < 0) || (v > 0xffff))
		return 0xffff;
	ret->u.as_16 = (uint16_t)v;
	return 0;
}

static uint32_t _parse_u32(const char *str, _any *ret)
{
	char *endptr = NULL;
	long long int v = strtoll(str, &endptr, 10);
	if (*endptr != '\0')
		return 0xffffffff;
	if ((v < 0) || (v > 0xffffffff))
		return 0xffffffff;
	ret->u.as_32 = (uint32_t)v;
	return 0;
}

static void _print_u8(struct nlattr *a)
{
	printf("%d", nla_get_u8(a));
}

static void _print_u16(struct nlattr *a)
{
	printf("%d", nla_get_u16(a));
}

static void _print_u16_timeout(struct nlattr *a)
{
	printf("%d milliseconds", nla_get_u16(a));
}

static void _print_u16_in_TUs(struct nlattr *a)
{
	printf("%d TUs", nla_get_u16(a));
}

static void _print_u32_timeout(struct nlattr *a)
{
	printf("%u milliseconds", nla_get_u32(a));
}

static void _print_u32_in_TUs(struct nlattr *a)
{
	printf("%d TUs", nla_get_u32(a));
}

/* The current mesh parameters */
const static struct mesh_param_descr _mesh_param_descrs[] =
{
	{"mesh_retry_timeout",
	NL80211_MESHCONF_RETRY_TIMEOUT,
	_my_nla_put_u16, _parse_u16, _print_u16_timeout},
	{"mesh_confirm_timeout",
	NL80211_MESHCONF_CONFIRM_TIMEOUT,
	_my_nla_put_u16, _parse_u16, _print_u16_timeout},
	{"mesh_holding_timeout",
	NL80211_MESHCONF_HOLDING_TIMEOUT,
	_my_nla_put_u16, _parse_u16, _print_u16_timeout},
	{"mesh_max_peer_links",
	NL80211_MESHCONF_MAX_PEER_LINKS,
	_my_nla_put_u16, _parse_u16, _print_u16},
	{"mesh_max_retries",
	NL80211_MESHCONF_MAX_RETRIES,
	_my_nla_put_u8, _parse_u8, _print_u8},
	{"mesh_ttl",
	NL80211_MESHCONF_TTL,
	_my_nla_put_u8, _parse_u8, _print_u8},
	{"mesh_element_ttl",
	NL80211_MESHCONF_ELEMENT_TTL,
	_my_nla_put_u8, _parse_u8, _print_u8},
	{"mesh_auto_open_plinks",
	NL80211_MESHCONF_AUTO_OPEN_PLINKS,
	_my_nla_put_u8, _parse_u8_as_bool, _print_u8},
	{"mesh_hwmp_max_preq_retries",
	NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
	_my_nla_put_u8, _parse_u8, _print_u8},
	{"mesh_path_refresh_time",
	NL80211_MESHCONF_PATH_REFRESH_TIME,
	_my_nla_put_u32, _parse_u32, _print_u32_timeout},
	{"mesh_min_discovery_timeout",
	NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
	_my_nla_put_u16, _parse_u16, _print_u16_timeout},
	{"mesh_hwmp_active_path_timeout",
	NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
	_my_nla_put_u32, _parse_u32, _print_u32_in_TUs},
	{"mesh_hwmp_preq_min_interval",
	NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
	_my_nla_put_u16, _parse_u16, _print_u16_in_TUs},
	{"mesh_hwmp_net_diameter_traversal_time",
	NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
	_my_nla_put_u16, _parse_u16, _print_u16_in_TUs},
	{"mesh_hwmp_rootmode", NL80211_MESHCONF_HWMP_ROOTMODE,
	_my_nla_put_u8, _parse_u8, _print_u8},
	{"mesh_hwmp_rann_interval", NL80211_MESHCONF_HWMP_RANN_INTERVAL,
	_my_nla_put_u16, _parse_u16, _print_u16},
	{"mesh_gate_announcements", NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
	_my_nla_put_u8, _parse_u8, _print_u8},
};

static void print_all_mesh_param_descr(void)
{
	int i;

	printf("Possible mesh parameters are:\n");

	for (i = 0; i < ARRAY_SIZE(_mesh_param_descrs); i++)
		printf(" - %s\n", _mesh_param_descrs[i].name);
}

static const struct mesh_param_descr *find_mesh_param(const char *name)
{
	int i;
	const struct mesh_param_descr *mdescr = NULL;

	/* Find out what mesh parameter we want to change. */
	for (i = 0; i < ARRAY_SIZE(_mesh_param_descrs); i++) {
		if (!strcmp(_mesh_param_descrs[i].name, name))
			return _mesh_param_descrs + i;
	}

	if (!mdescr) {
		print_all_mesh_param_descr();
		return NULL;
	}
	return mdescr;
}

/* Setter */
static int set_interface_meshparam(struct nl80211_state *state,
				   struct nl_cb *cb,
				   struct nl_msg *msg,
				   int argc, char **argv)
{
	const struct mesh_param_descr *mdescr;
	struct nlattr *container;
	uint32_t ret;
	int err;

	container = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
	if (!container)
		return -ENOBUFS;

	if (!argc)
		return 1;

	while (argc) {
		const char *name;
		char *value;
		_any any;

		memset(&any, 0, sizeof(_any));

		name = argv[0];
		value = strchr(name, '=');
		if (value) {
			*value = '\0';
			value++;
			argc--;
			argv++;
		} else {
			/* backward compat -- accept w/o '=' */
			if (argc < 2) {
				printf("Must specify a value for %s.\n", name);
				return 2;
			}
			value = argv[1];
			argc -= 2;
			argv += 2;
		}

		mdescr = find_mesh_param(name);
		if (!mdescr)
			return 2;

		/* Parse the new value */
		ret = mdescr->parse_fn(value, &any);
		if (ret != 0) {
			printf("%s must be set to a number "
			       "between 0 and %u\n", mdescr->name, ret);
			return 2;
		}

		err = mdescr->nla_put_fn(msg, mdescr->mesh_param_num, &any);
		if (err)
			return err;
	}
	nla_nest_end(msg, container);

	return err;
}

COMMAND(set, mesh_param, "<param>=<value> [<param>=<value>]*",
	NL80211_CMD_SET_MESH_PARAMS, 0, CIB_NETDEV, set_interface_meshparam,
	"Set mesh parameter (run command without any to see available ones).");

/* Getter */
static int print_mesh_param_handler(struct nl_msg *msg, void *arg)
{
	const struct mesh_param_descr *mdescr = arg;
	struct nlattr *attrs[NL80211_ATTR_MAX + 1];
	struct nlattr *parent_attr;
	struct nlattr *mesh_params[NL80211_MESHCONF_ATTR_MAX + 1];
	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));

	/* locate NL80211_ATTR_MESH_PARAMS */
	nla_parse(attrs, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
		  genlmsg_attrlen(gnlh, 0), NULL);
	parent_attr = attrs[NL80211_ATTR_MESH_PARAMS];
	if (!parent_attr)
		return -EINVAL;

	/* unpack the mesh parameters */
	if (nla_parse_nested(mesh_params, NL80211_MESHCONF_ATTR_MAX,
			     parent_attr, NULL))
		return -EINVAL;

	if (!mdescr) {
		int i;

		for (i = 0; i < ARRAY_SIZE(_mesh_param_descrs); i++) {
			mdescr = &_mesh_param_descrs[i];
			printf("%s = ", mdescr->name);
			mdescr->nla_print_fn(mesh_params[mdescr->mesh_param_num]);
			printf("\n");
		}
		return NL_SKIP;
	}

	/* print out the mesh parameter */
	mdescr->nla_print_fn(mesh_params[mdescr->mesh_param_num]);
	printf("\n");
	return NL_SKIP;
}

static int get_interface_meshparam(struct nl80211_state *state,
				   struct nl_cb *cb,
				   struct nl_msg *msg,
				   int argc, char **argv)
{
	const struct mesh_param_descr *mdescr = NULL;

	if (argc > 1)
		return 1;

	if (argc == 1) {
		mdescr = find_mesh_param(argv[0]);
		if (!mdescr)
			return 2;
	}

	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
		  print_mesh_param_handler, (void *)mdescr);
	return 0;
}

COMMAND(get, mesh_param, "[<param>]",
	NL80211_CMD_GET_MESH_PARAMS, 0, CIB_NETDEV, get_interface_meshparam,
	"Retrieve mesh parameter (run command without any to see available ones).");

static int join_mesh(struct nl80211_state *state, struct nl_cb *cb,
		     struct nl_msg *msg, int argc, char **argv)
{
	if (argc < 1)
		return 1;

	NLA_PUT(msg, NL80211_ATTR_MESH_ID, strlen(argv[0]), argv[0]);
	argc--;
	argv++;

	if (!argc)
		return 0;
	return set_interface_meshparam(state, cb, msg, argc, argv);
 nla_put_failure:
	return -ENOBUFS;
}
COMMAND(mesh, join, "<mesh ID> [<param>=<value>]*",
	NL80211_CMD_JOIN_MESH, 0, CIB_NETDEV, join_mesh,
	"Join a mesh with the given mesh ID and mesh parameters.");

static int leave_mesh(struct nl80211_state *state, struct nl_cb *cb,
		      struct nl_msg *msg, int argc, char **argv)
{
	if (argc)
		return 1;

	return 0;
}
COMMAND(mesh, leave, NULL, NL80211_CMD_LEAVE_MESH, 0, CIB_NETDEV, leave_mesh,
	"Leave a mesh.");
Commit	Line	Data
46c1ad1f	1	#include <net/if.h>
	2	#include <errno.h>
	3	#include <string.h>
	4
	5	#include <netlink/genl/genl.h>
	6	#include <netlink/genl/family.h>
	7	#include <netlink/genl/ctrl.h>
	8	#include <netlink/msg.h>
	9	#include <netlink/attr.h>
	10
	11	#include "nl80211.h"
	12	#include "iw.h"
	13
400efd3e JB	14	SECTION(mesh);
	15
	16
46c1ad1f	17	typedef struct _any_t {
	18	union {
	19	uint32_t as_32;
	20	uint16_t as_16;
	21	uint8_t as_8;
	22	} u;
	23	} _any;
	24
	25	/* describes a mesh parameter */
	26	struct mesh_param_descr {
	27	const char *name;
	28	enum nl80211_meshconf_params mesh_param_num;
	29	int (nla_put_fn)(struct nl_msg, int, _any*);
	30	uint32_t (parse_fn)(const char, _any*);
	31	void (nla_print_fn)(struct nlattr );
	32	};
	33
	34	/* utility functions for manipulating and printing u8/u16/u32 values and
	35	* timesouts. */
	36	static int _my_nla_put_u8(struct nl_msg n, int mesh_param_num, _any value)
	37	{
	38	return nla_put(n, mesh_param_num, sizeof(uint8_t), &value->u.as_8);
	39	}
	40
	41	static int _my_nla_put_u16(struct nl_msg n, int mesh_param_num, _any value)
	42	{
	43	return nla_put(n, mesh_param_num, sizeof(uint16_t), &value->u.as_16);
	44	}
	45
	46	static int _my_nla_put_u32(struct nl_msg n, int mesh_param_num, _any value)
	47	{
	48	return nla_put(n, mesh_param_num, sizeof(uint32_t), &value->u.as_32);
	49	}
	50
	51	static uint32_t _parse_u8(const char str, _any ret)
	52	{
	53	char *endptr = NULL;
	54	unsigned long int v = strtoul(str, &endptr, 10);
	55	if (*endptr != '\0')
	56	return 0xff;
	57	if (v > 0xff)
	58	return 0xff;
	59	ret->u.as_8 = (uint8_t)v;
	60	return 0;
	61	}
	62
	63	static uint32_t _parse_u8_as_bool(const char str, _any ret)
	64	{
	65	char *endptr = NULL;
	66	unsigned long int v = strtoul(str, &endptr, 10);
	67	if (*endptr != '\0')
	68	return 0x1;
	69	if (v > 0x1)
	70	return 0x1;
	71	ret->u.as_8 = (uint8_t)v;
	72	return 0;
	73	}
	74
	75	static uint32_t _parse_u16(const char str, _any ret)
	76	{
	77	char *endptr = NULL;
	78	long int v = strtol(str, &endptr, 10);
	79	if (*endptr != '\0')
	80	return 0xffff;
81	if ((v < 0) \|\| (v > 0xffff))
82	return 0xffff;
83	ret->u.as_16 = (uint16_t)v;
84	return 0;
85	}
86
87	static uint32_t _parse_u32(const char str, _any ret)
88	{
89	char *endptr = NULL;
90	long long int v = strtoll(str, &endptr, 10);
91	if (*endptr != '\0')
92	return 0xffffffff;
93	if ((v < 0) \|\| (v > 0xffffffff))
94	return 0xffffffff;
95	ret->u.as_32 = (uint32_t)v;
96	return 0;
97	}
98
656aa246	99	static void _print_u8(struct nlattr *a)
46c1ad1f	100	{
	101	printf("%d", nla_get_u8(a));
	102	}
	103
656aa246	104	static void _print_u16(struct nlattr *a)
46c1ad1f	105	{
	106	printf("%d", nla_get_u16(a));
	107	}
	108
656aa246	109	static void _print_u16_timeout(struct nlattr *a)
46c1ad1f	110	{
	111	printf("%d milliseconds", nla_get_u16(a));
	112	}
	113
656aa246	114	static void _print_u16_in_TUs(struct nlattr *a)
46c1ad1f	115	{
	116	printf("%d TUs", nla_get_u16(a));
	117	}
	118
656aa246	119	static void _print_u32_timeout(struct nlattr *a)
46c1ad1f	120	{
	121	printf("%u milliseconds", nla_get_u32(a));
	122	}
	123
656aa246	124	static void _print_u32_in_TUs(struct nlattr *a)
46c1ad1f	125	{
	126	printf("%d TUs", nla_get_u32(a));
	127	}
	128
	129	/* The current mesh parameters */
	130	const static struct mesh_param_descr _mesh_param_descrs[] =
	131	{
	132	{"mesh_retry_timeout",
	133	NL80211_MESHCONF_RETRY_TIMEOUT,
	134	_my_nla_put_u16, _parse_u16, _print_u16_timeout},
	135	{"mesh_confirm_timeout",
	136	NL80211_MESHCONF_CONFIRM_TIMEOUT,
	137	_my_nla_put_u16, _parse_u16, _print_u16_timeout},
	138	{"mesh_holding_timeout",
	139	NL80211_MESHCONF_HOLDING_TIMEOUT,
	140	_my_nla_put_u16, _parse_u16, _print_u16_timeout},
	141	{"mesh_max_peer_links",
	142	NL80211_MESHCONF_MAX_PEER_LINKS,
	143	_my_nla_put_u16, _parse_u16, _print_u16},
	144	{"mesh_max_retries",
	145	NL80211_MESHCONF_MAX_RETRIES,
	146	_my_nla_put_u8, _parse_u8, _print_u8},
	147	{"mesh_ttl",
	148	NL80211_MESHCONF_TTL,
	149	_my_nla_put_u8, _parse_u8, _print_u8},
247beb99 JB	150	{"mesh_element_ttl",
	151	NL80211_MESHCONF_ELEMENT_TTL,
	152	_my_nla_put_u8, _parse_u8, _print_u8},
46c1ad1f	153	{"mesh_auto_open_plinks",
	154	NL80211_MESHCONF_AUTO_OPEN_PLINKS,
	155	_my_nla_put_u8, _parse_u8_as_bool, _print_u8},
	156	{"mesh_hwmp_max_preq_retries",
	157	NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
	158	_my_nla_put_u8, _parse_u8, _print_u8},
	159	{"mesh_path_refresh_time",
	160	NL80211_MESHCONF_PATH_REFRESH_TIME,
	161	_my_nla_put_u32, _parse_u32, _print_u32_timeout},
	162	{"mesh_min_discovery_timeout",
	163	NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
	164	_my_nla_put_u16, _parse_u16, _print_u16_timeout},
	165	{"mesh_hwmp_active_path_timeout",
	166	NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
	167	_my_nla_put_u32, _parse_u32, _print_u32_in_TUs},
	168	{"mesh_hwmp_preq_min_interval",
	169	NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
	170	_my_nla_put_u16, _parse_u16, _print_u16_in_TUs},
	171	{"mesh_hwmp_net_diameter_traversal_time",
	172	NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
	173	_my_nla_put_u16, _parse_u16, _print_u16_in_TUs},
cc37218f RP	174	{"mesh_hwmp_rootmode", NL80211_MESHCONF_HWMP_ROOTMODE,
cc37218f RP	175	_my_nla_put_u8, _parse_u8, _print_u8},
b9aa711a JC	176	{"mesh_hwmp_rann_interval", NL80211_MESHCONF_HWMP_RANN_INTERVAL,
	177	_my_nla_put_u16, _parse_u16, _print_u16},
	178	{"mesh_gate_announcements", NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
	179	_my_nla_put_u8, _parse_u8, _print_u8},
46c1ad1f	180	};
	181
	182	static void print_all_mesh_param_descr(void)
	183	{
	184	int i;
46c1ad1f	185
f089471a JB	186	printf("Possible mesh parameters are:\n");
	187
	188	for (i = 0; i < ARRAY_SIZE(_mesh_param_descrs); i++)
	189	printf(" - %s\n", _mesh_param_descrs[i].name);
46c1ad1f	190	}
46c1ad1f	191
a34f62cf	192	static const struct mesh_param_descr find_mesh_param(const char name)
46c1ad1f	193	{
46c1ad1f	194	int i;
a34f62cf	195	const struct mesh_param_descr *mdescr = NULL;
46c1ad1f	196
46c1ad1f	197	/* Find out what mesh parameter we want to change. */
4d0d2ea7	198	for (i = 0; i < ARRAY_SIZE(_mesh_param_descrs); i++) {
a34f62cf	199	if (!strcmp(_mesh_param_descrs[i].name, name))
46c1ad1f	200	return _mesh_param_descrs + i;
4d0d2ea7	201	}
46c1ad1f	202
46c1ad1f	203	if (!mdescr) {
46c1ad1f	204	print_all_mesh_param_descr();
46c1ad1f	205	return NULL;
	206	}
	207	return mdescr;
	208	}
	209
	210	/* Setter */
7c37a24d JB	211	static int set_interface_meshparam(struct nl80211_state *state,
	212	struct nl_cb *cb,
	213	struct nl_msg *msg,
	214	int argc, char **argv)
46c1ad1f	215	{
46c1ad1f	216	const struct mesh_param_descr *mdescr;
656aa246	217	struct nlattr *container;
a34f62cf JB	218	uint32_t ret;
a34f62cf JB	219	int err;
46c1ad1f	220
656aa246	221	container = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
46c1ad1f	222	if (!container)
46c1ad1f	223	return -ENOBUFS;
a34f62cf JB	224
	225	if (!argc)
	226	return 1;
	227
	228	while (argc) {
	229	const char *name;
	230	char *value;
	231	_any any;
	232
	233	memset(&any, 0, sizeof(_any));
	234
	235	name = argv[0];
	236	value = strchr(name, '=');
	237	if (value) {
	238	*value = '\0';
	239	value++;
	240	argc--;
	241	argv++;
	242	} else {
	243	/* backward compat -- accept w/o '=' */
	244	if (argc < 2) {
	245	printf("Must specify a value for %s.\n", name);
	246	return 2;
	247	}
	248	value = argv[1];
	249	argc -= 2;
	250	argv += 2;
	251	}
	252
	253	mdescr = find_mesh_param(name);
	254	if (!mdescr)
	255	return 2;
	256
	257	/* Parse the new value */
	258	ret = mdescr->parse_fn(value, &any);
	259	if (ret != 0) {
	260	printf("%s must be set to a number "
	261	"between 0 and %u\n", mdescr->name, ret);
	262	return 2;
	263	}
	264
	265	err = mdescr->nla_put_fn(msg, mdescr->mesh_param_num, &any);
	266	if (err)
	267	return err;
	268	}
46c1ad1f	269	nla_nest_end(msg, container);
	270
	271	return err;
	272	}
	273
a34f62cf	274	COMMAND(set, mesh_param, "<param>=<value> [<param>=<value>]*",
70cf4544 JB	275	NL80211_CMD_SET_MESH_PARAMS, 0, CIB_NETDEV, set_interface_meshparam,
70cf4544 JB	276	"Set mesh parameter (run command without any to see available ones).");
46c1ad1f	277
	278	/* Getter */
	279	static int print_mesh_param_handler(struct nl_msg msg, void arg)
	280	{
	281	const struct mesh_param_descr *mdescr = arg;
	282	struct nlattr *attrs[NL80211_ATTR_MAX + 1];
	283	struct nlattr *parent_attr;
	284	struct nlattr *mesh_params[NL80211_MESHCONF_ATTR_MAX + 1];
	285	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
	286
	287	/* locate NL80211_ATTR_MESH_PARAMS */
	288	nla_parse(attrs, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
	289	genlmsg_attrlen(gnlh, 0), NULL);
	290	parent_attr = attrs[NL80211_ATTR_MESH_PARAMS];
	291	if (!parent_attr)
	292	return -EINVAL;
	293
	294	/* unpack the mesh parameters */
	295	if (nla_parse_nested(mesh_params, NL80211_MESHCONF_ATTR_MAX,
97e21372	296	parent_attr, NULL))
46c1ad1f	297	return -EINVAL;
46c1ad1f	298
97e21372 JB	299	if (!mdescr) {
	300	int i;
	301
	302	for (i = 0; i < ARRAY_SIZE(_mesh_param_descrs); i++) {
	303	mdescr = &_mesh_param_descrs[i];
	304	printf("%s = ", mdescr->name);
	305	mdescr->nla_print_fn(mesh_params[mdescr->mesh_param_num]);
	306	printf("\n");
	307	}
	308	return NL_SKIP;
	309	}
	310
46c1ad1f	311	/* print out the mesh parameter */
	312	mdescr->nla_print_fn(mesh_params[mdescr->mesh_param_num]);
	313	printf("\n");
	314	return NL_SKIP;
	315	}
	316
7c37a24d JB	317	static int get_interface_meshparam(struct nl80211_state *state,
	318	struct nl_cb *cb,
	319	struct nl_msg *msg,
	320	int argc, char **argv)
46c1ad1f	321	{
97e21372	322	const struct mesh_param_descr *mdescr = NULL;
46c1ad1f	323
97e21372 JB	324	if (argc > 1)
	325	return 1;
	326
	327	if (argc == 1) {
a34f62cf	328	mdescr = find_mesh_param(argv[0]);
97e21372 JB	329	if (!mdescr)
	330	return 2;
	331	}
46c1ad1f	332
	333	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
	334	print_mesh_param_handler, (void *)mdescr);
	335	return 0;
	336	}
	337
97e21372	338	COMMAND(get, mesh_param, "[<param>]",
70cf4544 JB	339	NL80211_CMD_GET_MESH_PARAMS, 0, CIB_NETDEV, get_interface_meshparam,
70cf4544 JB	340	"Retrieve mesh parameter (run command without any to see available ones).");
400efd3e JB	341
	342	static int join_mesh(struct nl80211_state state, struct nl_cb cb,
	343	struct nl_msg msg, int argc, char *argv)
	344	{
	345	if (argc < 1)
	346	return 1;
	347
	348	NLA_PUT(msg, NL80211_ATTR_MESH_ID, strlen(argv[0]), argv[0]);
	349	argc--;
	350	argv++;
	351
	352	if (!argc)
	353	return 0;
	354	return set_interface_meshparam(state, cb, msg, argc, argv);
	355	nla_put_failure:
	356	return -ENOBUFS;
	357	}
	358	COMMAND(mesh, join, "<mesh ID> [<param>=<value>]*",
	359	NL80211_CMD_JOIN_MESH, 0, CIB_NETDEV, join_mesh,
	360	"Join a mesh with the given mesh ID and mesh parameters.");
	361
	362	static int leave_mesh(struct nl80211_state state, struct nl_cb cb,
	363	struct nl_msg msg, int argc, char *argv)
	364	{
	365	if (argc)
	366	return 1;
	367
	368	return 0;
	369	}
	370	COMMAND(mesh, leave, NULL, NL80211_CMD_LEAVE_MESH, 0, CIB_NETDEV, leave_mesh,
	371	"Leave a mesh.");