[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;
		int32_t as_s32;
		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 uint32_t _parse_s32(const char *str, _any *ret)
{
	char *endptr = NULL;
	long int v = strtol(str, &endptr, 10);
	if (*endptr != '\0')
		return 0xffffffff;
	if (v > 0xff)
		return 0xffffffff;
	ret->u.as_s32 = (int32_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(struct nlattr *a)
{
	printf("%d", nla_get_u32(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));
}

static void _print_s32_in_dBm(struct nlattr *a)
{
	printf("%d dBm", (int32_t) 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},
	{"mesh_fwding", NL80211_MESHCONF_FORWARDING,
	_my_nla_put_u8, _parse_u8_as_bool, _print_u8},
	{"mesh_sync_offset_max_neighor",
	NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
	_my_nla_put_u32, _parse_u32, _print_u32},
	{"mesh_rssi_threshold", NL80211_MESHCONF_RSSI_THRESHOLD,
	_my_nla_put_u32, _parse_s32, _print_s32_in_dBm},
};

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)
{
	struct nlattr *container;
	float rate;
	char *end;

	if (argc < 1)
		return 1;

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

	if (argc > 1 && strcmp(argv[0], "mcast-rate") == 0) {
		argv++;
		argc--;

		rate = strtod(argv[0], &end);
		if (*end != '\0')
			return 1;

		NLA_PUT_U32(msg, NL80211_ATTR_MCAST_RATE, (int)(rate * 10));
		argv++;
		argc--;
	}

	container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
	if (!container)
		return -ENOBUFS;

	if (argc > 1 && strcmp(argv[0], "vendor_sync") == 0) {
		argv++;
		argc--;
		if (strcmp(argv[0], "on") == 0)
			NLA_PUT_U8(msg,
				   NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC, 1);
		else
			NLA_PUT_U8(msg,
				   NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC, 0);
		argv++;
		argc--;
	}
	/* parse and put other NL80211_ATTR_MESH_SETUP elements here */

	nla_nest_end(msg, container);

	if (!argc)
		return 0;
	return set_interface_meshparam(state, cb, msg, argc, argv);
 nla_put_failure:
	return -ENOBUFS;
}
COMMAND(mesh, join, "<mesh ID> [mcast-rate <rate in Mbps>] [vendor_sync on|off]"
	" [<param>=<value>]*",
	NL80211_CMD_JOIN_MESH, 0, CIB_NETDEV, join_mesh,
	"Join a mesh with the given mesh ID with mcast-rate 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;
be97e513	20	int32_t as_s32;
46c1ad1f	21	uint16_t as_16;
	22	uint8_t as_8;
	23	} u;
	24	} _any;
	25
	26	/* describes a mesh parameter */
	27	struct mesh_param_descr {
	28	const char *name;
	29	enum nl80211_meshconf_params mesh_param_num;
	30	int (nla_put_fn)(struct nl_msg, int, _any*);
	31	uint32_t (parse_fn)(const char, _any*);
	32	void (nla_print_fn)(struct nlattr );
	33	};
	34
	35	/* utility functions for manipulating and printing u8/u16/u32 values and
	36	* timesouts. */
	37	static int _my_nla_put_u8(struct nl_msg n, int mesh_param_num, _any value)
	38	{
	39	return nla_put(n, mesh_param_num, sizeof(uint8_t), &value->u.as_8);
	40	}
	41
	42	static int _my_nla_put_u16(struct nl_msg n, int mesh_param_num, _any value)
	43	{
	44	return nla_put(n, mesh_param_num, sizeof(uint16_t), &value->u.as_16);
	45	}
	46
	47	static int _my_nla_put_u32(struct nl_msg n, int mesh_param_num, _any value)
	48	{
	49	return nla_put(n, mesh_param_num, sizeof(uint32_t), &value->u.as_32);
	50	}
	51
	52	static uint32_t _parse_u8(const char str, _any ret)
	53	{
	54	char *endptr = NULL;
	55	unsigned long int v = strtoul(str, &endptr, 10);
	56	if (*endptr != '\0')
	57	return 0xff;
	58	if (v > 0xff)
	59	return 0xff;
	60	ret->u.as_8 = (uint8_t)v;
	61	return 0;
	62	}
	63
	64	static uint32_t _parse_u8_as_bool(const char str, _any ret)
	65	{
	66	char *endptr = NULL;
	67	unsigned long int v = strtoul(str, &endptr, 10);
	68	if (*endptr != '\0')
	69	return 0x1;
	70	if (v > 0x1)
	71	return 0x1;
	72	ret->u.as_8 = (uint8_t)v;
	73	return 0;
	74	}
	75
	76	static uint32_t _parse_u16(const char str, _any ret)
	77	{
	78	char *endptr = NULL;
	79	long int v = strtol(str, &endptr, 10);
	80	if (*endptr != '\0')
	81	return 0xffff;
	82	if ((v < 0) \|\| (v > 0xffff))
	83	return 0xffff;
	84	ret->u.as_16 = (uint16_t)v;
85	return 0;
86	}
87
88	static uint32_t _parse_u32(const char str, _any ret)
89	{
90	char *endptr = NULL;
91	long long int v = strtoll(str, &endptr, 10);
92	if (*endptr != '\0')
93	return 0xffffffff;
94	if ((v < 0) \|\| (v > 0xffffffff))
95	return 0xffffffff;
96	ret->u.as_32 = (uint32_t)v;
97	return 0;
98	}
99
be97e513 AN	100	static uint32_t _parse_s32(const char str, _any ret)
	101	{
	102	char *endptr = NULL;
	103	long int v = strtol(str, &endptr, 10);
	104	if (*endptr != '\0')
	105	return 0xffffffff;
	106	if (v > 0xff)
	107	return 0xffffffff;
	108	ret->u.as_s32 = (int32_t)v;
	109	return 0;
	110	}
	111
	112
656aa246	113	static void _print_u8(struct nlattr *a)
46c1ad1f	114	{
	115	printf("%d", nla_get_u8(a));
	116	}
	117
656aa246	118	static void _print_u16(struct nlattr *a)
46c1ad1f	119	{
	120	printf("%d", nla_get_u16(a));
	121	}
	122
656aa246	123	static void _print_u16_timeout(struct nlattr *a)
46c1ad1f	124	{
	125	printf("%d milliseconds", nla_get_u16(a));
	126	}
	127
656aa246	128	static void _print_u16_in_TUs(struct nlattr *a)
46c1ad1f	129	{
	130	printf("%d TUs", nla_get_u16(a));
	131	}
	132
d9f730c4 AN	133	static void _print_u32(struct nlattr *a)
	134	{
	135	printf("%d", nla_get_u32(a));
	136	}
	137
656aa246	138	static void _print_u32_timeout(struct nlattr *a)
46c1ad1f	139	{
	140	printf("%u milliseconds", nla_get_u32(a));
	141	}
	142
656aa246	143	static void _print_u32_in_TUs(struct nlattr *a)
46c1ad1f	144	{
	145	printf("%d TUs", nla_get_u32(a));
	146	}
	147
be97e513 AN	148	static void _print_s32_in_dBm(struct nlattr *a)
	149	{
	150	printf("%d dBm", (int32_t) nla_get_u32(a));
	151	}
	152
	153
46c1ad1f	154	/* The current mesh parameters */
	155	const static struct mesh_param_descr _mesh_param_descrs[] =
	156	{
	157	{"mesh_retry_timeout",
	158	NL80211_MESHCONF_RETRY_TIMEOUT,
	159	_my_nla_put_u16, _parse_u16, _print_u16_timeout},
	160	{"mesh_confirm_timeout",
	161	NL80211_MESHCONF_CONFIRM_TIMEOUT,
	162	_my_nla_put_u16, _parse_u16, _print_u16_timeout},
	163	{"mesh_holding_timeout",
	164	NL80211_MESHCONF_HOLDING_TIMEOUT,
	165	_my_nla_put_u16, _parse_u16, _print_u16_timeout},
	166	{"mesh_max_peer_links",
	167	NL80211_MESHCONF_MAX_PEER_LINKS,
	168	_my_nla_put_u16, _parse_u16, _print_u16},
	169	{"mesh_max_retries",
	170	NL80211_MESHCONF_MAX_RETRIES,
	171	_my_nla_put_u8, _parse_u8, _print_u8},
	172	{"mesh_ttl",
	173	NL80211_MESHCONF_TTL,
	174	_my_nla_put_u8, _parse_u8, _print_u8},
247beb99 JB	175	{"mesh_element_ttl",
	176	NL80211_MESHCONF_ELEMENT_TTL,
	177	_my_nla_put_u8, _parse_u8, _print_u8},
46c1ad1f	178	{"mesh_auto_open_plinks",
	179	NL80211_MESHCONF_AUTO_OPEN_PLINKS,
	180	_my_nla_put_u8, _parse_u8_as_bool, _print_u8},
	181	{"mesh_hwmp_max_preq_retries",
	182	NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
	183	_my_nla_put_u8, _parse_u8, _print_u8},
	184	{"mesh_path_refresh_time",
	185	NL80211_MESHCONF_PATH_REFRESH_TIME,
	186	_my_nla_put_u32, _parse_u32, _print_u32_timeout},
	187	{"mesh_min_discovery_timeout",
	188	NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
	189	_my_nla_put_u16, _parse_u16, _print_u16_timeout},
	190	{"mesh_hwmp_active_path_timeout",
	191	NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
	192	_my_nla_put_u32, _parse_u32, _print_u32_in_TUs},
	193	{"mesh_hwmp_preq_min_interval",
	194	NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
	195	_my_nla_put_u16, _parse_u16, _print_u16_in_TUs},
	196	{"mesh_hwmp_net_diameter_traversal_time",
	197	NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
	198	_my_nla_put_u16, _parse_u16, _print_u16_in_TUs},
cc37218f RP	199	{"mesh_hwmp_rootmode", NL80211_MESHCONF_HWMP_ROOTMODE,
cc37218f RP	200	_my_nla_put_u8, _parse_u8, _print_u8},
b9aa711a JC	201	{"mesh_hwmp_rann_interval", NL80211_MESHCONF_HWMP_RANN_INTERVAL,
	202	_my_nla_put_u16, _parse_u16, _print_u16},
	203	{"mesh_gate_announcements", NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
	204	_my_nla_put_u8, _parse_u8, _print_u8},
accd0d23 CYY	205	{"mesh_fwding", NL80211_MESHCONF_FORWARDING,
accd0d23 CYY	206	_my_nla_put_u8, _parse_u8_as_bool, _print_u8},
d9f730c4 AN	207	{"mesh_sync_offset_max_neighor",
	208	NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
	209	_my_nla_put_u32, _parse_u32, _print_u32},
be97e513 AN	210	{"mesh_rssi_threshold", NL80211_MESHCONF_RSSI_THRESHOLD,
be97e513 AN	211	_my_nla_put_u32, _parse_s32, _print_s32_in_dBm},
46c1ad1f	212	};
	213
	214	static void print_all_mesh_param_descr(void)
	215	{
	216	int i;
46c1ad1f	217
f089471a JB	218	printf("Possible mesh parameters are:\n");
	219
	220	for (i = 0; i < ARRAY_SIZE(_mesh_param_descrs); i++)
	221	printf(" - %s\n", _mesh_param_descrs[i].name);
46c1ad1f	222	}
46c1ad1f	223
a34f62cf	224	static const struct mesh_param_descr find_mesh_param(const char name)
46c1ad1f	225	{
46c1ad1f	226	int i;
a34f62cf	227	const struct mesh_param_descr *mdescr = NULL;
46c1ad1f	228
46c1ad1f	229	/* Find out what mesh parameter we want to change. */
4d0d2ea7	230	for (i = 0; i < ARRAY_SIZE(_mesh_param_descrs); i++) {
a34f62cf	231	if (!strcmp(_mesh_param_descrs[i].name, name))
46c1ad1f	232	return _mesh_param_descrs + i;
4d0d2ea7	233	}
46c1ad1f	234
46c1ad1f	235	if (!mdescr) {
46c1ad1f	236	print_all_mesh_param_descr();
46c1ad1f	237	return NULL;
	238	}
	239	return mdescr;
	240	}
	241
	242	/* Setter */
7c37a24d JB	243	static int set_interface_meshparam(struct nl80211_state *state,
	244	struct nl_cb *cb,
	245	struct nl_msg *msg,
	246	int argc, char **argv)
46c1ad1f	247	{
46c1ad1f	248	const struct mesh_param_descr *mdescr;
656aa246	249	struct nlattr *container;
a34f62cf JB	250	uint32_t ret;
a34f62cf JB	251	int err;
46c1ad1f	252
656aa246	253	container = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
46c1ad1f	254	if (!container)
46c1ad1f	255	return -ENOBUFS;
a34f62cf JB	256
	257	if (!argc)
	258	return 1;
	259
	260	while (argc) {
	261	const char *name;
	262	char *value;
	263	_any any;
	264
	265	memset(&any, 0, sizeof(_any));
	266
	267	name = argv[0];
	268	value = strchr(name, '=');
	269	if (value) {
	270	*value = '\0';
	271	value++;
	272	argc--;
	273	argv++;
	274	} else {
	275	/* backward compat -- accept w/o '=' */
	276	if (argc < 2) {
	277	printf("Must specify a value for %s.\n", name);
	278	return 2;
	279	}
	280	value = argv[1];
	281	argc -= 2;
	282	argv += 2;
	283	}
	284
	285	mdescr = find_mesh_param(name);
	286	if (!mdescr)
	287	return 2;
	288
	289	/* Parse the new value */
	290	ret = mdescr->parse_fn(value, &any);
	291	if (ret != 0) {
	292	printf("%s must be set to a number "
	293	"between 0 and %u\n", mdescr->name, ret);
	294	return 2;
	295	}
	296
	297	err = mdescr->nla_put_fn(msg, mdescr->mesh_param_num, &any);
	298	if (err)
	299	return err;
	300	}
46c1ad1f	301	nla_nest_end(msg, container);
	302
	303	return err;
	304	}
	305
a34f62cf	306	COMMAND(set, mesh_param, "<param>=<value> [<param>=<value>]*",
70cf4544 JB	307	NL80211_CMD_SET_MESH_PARAMS, 0, CIB_NETDEV, set_interface_meshparam,
70cf4544 JB	308	"Set mesh parameter (run command without any to see available ones).");
46c1ad1f	309
	310	/* Getter */
	311	static int print_mesh_param_handler(struct nl_msg msg, void arg)
	312	{
	313	const struct mesh_param_descr *mdescr = arg;
	314	struct nlattr *attrs[NL80211_ATTR_MAX + 1];
	315	struct nlattr *parent_attr;
	316	struct nlattr *mesh_params[NL80211_MESHCONF_ATTR_MAX + 1];
	317	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
	318
	319	/* locate NL80211_ATTR_MESH_PARAMS */
	320	nla_parse(attrs, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
	321	genlmsg_attrlen(gnlh, 0), NULL);
	322	parent_attr = attrs[NL80211_ATTR_MESH_PARAMS];
	323	if (!parent_attr)
	324	return -EINVAL;
	325
	326	/* unpack the mesh parameters */
	327	if (nla_parse_nested(mesh_params, NL80211_MESHCONF_ATTR_MAX,
97e21372	328	parent_attr, NULL))
46c1ad1f	329	return -EINVAL;
46c1ad1f	330
97e21372 JB	331	if (!mdescr) {
	332	int i;
	333
	334	for (i = 0; i < ARRAY_SIZE(_mesh_param_descrs); i++) {
	335	mdescr = &_mesh_param_descrs[i];
	336	printf("%s = ", mdescr->name);
	337	mdescr->nla_print_fn(mesh_params[mdescr->mesh_param_num]);
	338	printf("\n");
	339	}
	340	return NL_SKIP;
	341	}
	342
46c1ad1f	343	/* print out the mesh parameter */
	344	mdescr->nla_print_fn(mesh_params[mdescr->mesh_param_num]);
	345	printf("\n");
	346	return NL_SKIP;
	347	}
	348
7c37a24d JB	349	static int get_interface_meshparam(struct nl80211_state *state,
	350	struct nl_cb *cb,
	351	struct nl_msg *msg,
	352	int argc, char **argv)
46c1ad1f	353	{
97e21372	354	const struct mesh_param_descr *mdescr = NULL;
46c1ad1f	355
97e21372 JB	356	if (argc > 1)
	357	return 1;
	358
	359	if (argc == 1) {
a34f62cf	360	mdescr = find_mesh_param(argv[0]);
97e21372 JB	361	if (!mdescr)
	362	return 2;
	363	}
46c1ad1f	364
	365	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
	366	print_mesh_param_handler, (void *)mdescr);
	367	return 0;
	368	}
	369
97e21372	370	COMMAND(get, mesh_param, "[<param>]",
70cf4544 JB	371	NL80211_CMD_GET_MESH_PARAMS, 0, CIB_NETDEV, get_interface_meshparam,
70cf4544 JB	372	"Retrieve mesh parameter (run command without any to see available ones).");
400efd3e JB	373
	374	static int join_mesh(struct nl80211_state state, struct nl_cb cb,
	375	struct nl_msg msg, int argc, char *argv)
	376	{
9560e43d	377	struct nlattr *container;
7d01a091 CYY	378	float rate;
	379	char *end;
	380
400efd3e JB	381	if (argc < 1)
	382	return 1;
	383
	384	NLA_PUT(msg, NL80211_ATTR_MESH_ID, strlen(argv[0]), argv[0]);
	385	argc--;
	386	argv++;
	387
7d01a091 CYY	388	if (argc > 1 && strcmp(argv[0], "mcast-rate") == 0) {
	389	argv++;
	390	argc--;
	391
	392	rate = strtod(argv[0], &end);
	393	if (*end != '\0')
	394	return 1;
	395
	396	NLA_PUT_U32(msg, NL80211_ATTR_MCAST_RATE, (int)(rate * 10));
	397	argv++;
	398	argc--;
	399	}
	400
9560e43d AN	401	container = nla_nest_start(msg, NL80211_ATTR_MESH_SETUP);
	402	if (!container)
	403	return -ENOBUFS;
	404
	405	if (argc > 1 && strcmp(argv[0], "vendor_sync") == 0) {
	406	argv++;
	407	argc--;
	408	if (strcmp(argv[0], "on") == 0)
	409	NLA_PUT_U8(msg,
	410	NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC, 1);
	411	else
	412	NLA_PUT_U8(msg,
	413	NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC, 0);
	414	argv++;
	415	argc--;
	416	}
	417	/* parse and put other NL80211_ATTR_MESH_SETUP elements here */
	418
	419	nla_nest_end(msg, container);
	420
400efd3e JB	421	if (!argc)
	422	return 0;
	423	return set_interface_meshparam(state, cb, msg, argc, argv);
	424	nla_put_failure:
	425	return -ENOBUFS;
	426	}
9560e43d AN	427	COMMAND(mesh, join, "<mesh ID> [mcast-rate <rate in Mbps>] [vendor_sync on\|off]"
9560e43d AN	428	" [<param>=<value>]*",
400efd3e	429	NL80211_CMD_JOIN_MESH, 0, CIB_NETDEV, join_mesh,
7d01a091	430	"Join a mesh with the given mesh ID with mcast-rate and mesh parameters.");
400efd3e JB	431
	432	static int leave_mesh(struct nl80211_state state, struct nl_cb cb,
	433	struct nl_msg msg, int argc, char *argv)
	434	{
	435	if (argc)
	436	return 1;
	437
	438	return 0;
	439	}
	440	COMMAND(mesh, leave, NULL, NL80211_CMD_LEAVE_MESH, 0, CIB_NETDEV, leave_mesh,
	441	"Leave a mesh.");