[thirdparty/iw.git] / info.c

#include <stdbool.h>
#include <errno.h>
#include <net/if.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"

static void print_flag(const char *name, int *open)
{
	if (!*open)
		printf(" (");
	else
		printf(", ");
	printf("%s", name);
	*open = 1;
}

static int print_phy_handler(struct nl_msg *msg, void *arg)
{
	struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));

	struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];

	struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
	static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
		[NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
		[NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
		[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
		[NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
		[NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
		[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
	};

	struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
	static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
		[NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
		[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
	};

	struct nlattr *nl_band;
	struct nlattr *nl_freq;
	struct nlattr *nl_rate;
	struct nlattr *nl_mode;
	struct nlattr *nl_cmd;
	int bandidx = 1;
	int rem_band, rem_freq, rem_rate, rem_mode, rem_cmd;
	int open;

	nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
		  genlmsg_attrlen(gnlh, 0), NULL);

	if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
		return NL_SKIP;

	if (tb_msg[NL80211_ATTR_WIPHY_NAME])
		printf("Wiphy %s\n", nla_get_string(tb_msg[NL80211_ATTR_WIPHY_NAME]));

	nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
		printf("\tBand %d:\n", bandidx);
		bandidx++;

		nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
			  nla_len(nl_band), NULL);

#ifdef NL80211_BAND_ATTR_HT_CAPA
		if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
			__u16 cap = nla_get_u16(tb_band[NL80211_BAND_ATTR_HT_CAPA]);
			print_ht_capability(cap);
		}
		if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
			__u8 exponent = nla_get_u8(tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]);
			print_ampdu_length(exponent);
		}
		if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
			__u8 spacing = nla_get_u8(tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]);
			print_ampdu_spacing(spacing);
		}
		if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
		    nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]) == 16)
			print_ht_mcs(nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]));
#endif

		printf("\t\tFrequencies:\n");

		nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
			uint32_t freq;
			nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
				  nla_len(nl_freq), freq_policy);
			if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
				continue;
			freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
			printf("\t\t\t* %d MHz [%d]", freq, ieee80211_frequency_to_channel(freq));

			if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
			    !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
				printf(" (%.1f dBm)", 0.01 * nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]));

			open = 0;
			if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) {
				print_flag("disabled", &open);
				goto next;
			}
			if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
				print_flag("passive scanning", &open);
			if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
				print_flag("no IBSS", &open);
			if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
				print_flag("radar detection", &open);
 next:
			if (open)
				printf(")");
			printf("\n");
		}

		printf("\t\tBitrates (non-HT):\n");

		nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
			nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
				  nla_len(nl_rate), rate_policy);
			if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
				continue;
			printf("\t\t\t* %2.1f Mbps", 0.1 * nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]));
			open = 0;
			if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
				print_flag("short preamble supported", &open);
			if (open)
				printf(")");
			printf("\n");
		}
	}

	if (tb_msg[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
		printf("\tmax # scan SSIDs: %d\n",
		       nla_get_u8(tb_msg[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]));
	if (tb_msg[NL80211_ATTR_MAX_SCAN_IE_LEN])
		printf("\tmax scan IEs length: %d bytes\n",
		       nla_get_u32(tb_msg[NL80211_ATTR_MAX_SCAN_IE_LEN]));

	if (tb_msg[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
		unsigned int frag;

		frag = nla_get_u32(tb_msg[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
		if (frag != (unsigned int)-1)
			printf("\tFragmentation threshold: %d\n", frag);
	}

	if (tb_msg[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
		unsigned int rts;

		rts = nla_get_u32(tb_msg[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
		if (rts != (unsigned int)-1)
			printf("\tRTS threshold: %d\n", rts);
	}

	if (tb_msg[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
		unsigned char coverage;

		coverage = nla_get_u8(tb_msg[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
		/* See handle_distance() for an explanation where the '450' comes from */
		printf("\tCoverage class: %d (up to %dm)\n", coverage, 450 * coverage);
	}

	if (!tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES])
		goto commands;

	printf("\tSupported interface modes:\n");
	nla_for_each_nested(nl_mode, tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES], rem_mode)
		printf("\t\t * %s\n", iftype_name(nl_mode->nla_type));

 commands:
	if (!tb_msg[NL80211_ATTR_SUPPORTED_COMMANDS])
		return NL_SKIP;

	printf("\tSupported commands:\n");
	nla_for_each_nested(nl_cmd, tb_msg[NL80211_ATTR_SUPPORTED_COMMANDS], rem_cmd)
		printf("\t\t * %s\n", command_name(nla_get_u32(nl_cmd)));

	return NL_SKIP;
}

static int handle_info(struct nl80211_state *state,
		       struct nl_cb *cb,
		       struct nl_msg *msg,
		       int argc, char **argv)
{
	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_phy_handler, NULL);

	return 0;
}
__COMMAND(NULL, info, "info", NULL, NL80211_CMD_GET_WIPHY, 0, 0, CIB_PHY, handle_info,
	 "Show capabilities for the specified wireless device.");
TOPLEVEL(list, NULL, NL80211_CMD_GET_WIPHY, NLM_F_DUMP, CIB_NONE, handle_info,
	 "List all wireless devices and their capabilities.");
TOPLEVEL(phy, NULL, NL80211_CMD_GET_WIPHY, NLM_F_DUMP, CIB_NONE, handle_info, NULL);
Commit	Line	Data
21878f36	1	#include <stdbool.h>
79f99b9a	2	#include <errno.h>
2ef1be68 JB	3	#include <net/if.h>
2ef1be68 JB	4
79f99b9a JB	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>
79f99b9a	10
f408e01b	11	#include "nl80211.h"
79f99b9a JB	12	#include "iw.h"
	13
	14	static void print_flag(const char name, int open)
	15	{
	16	if (!*open)
	17	printf(" (");
	18	else
	19	printf(", ");
69283122	20	printf("%s", name);
79f99b9a JB	21	*open = 1;
	22	}
	23
	24	static int print_phy_handler(struct nl_msg msg, void arg)
	25	{
	26	struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
	27	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
	28
	29	struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
	30
	31	struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
	32	static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
	33	[NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
	34	[NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
	35	[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
	36	[NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
	37	[NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
c1081c20	38	[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
79f99b9a JB	39	};
	40
	41	struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
	42	static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
	43	[NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
	44	[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
	45	};
	46
	47	struct nlattr *nl_band;
	48	struct nlattr *nl_freq;
	49	struct nlattr *nl_rate;
6367e71a	50	struct nlattr *nl_mode;
9990c1e9	51	struct nlattr *nl_cmd;
79f99b9a	52	int bandidx = 1;
9990c1e9	53	int rem_band, rem_freq, rem_rate, rem_mode, rem_cmd;
79f99b9a JB	54	int open;
	55
	56	nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
	57	genlmsg_attrlen(gnlh, 0), NULL);
	58
	59	if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
	60	return NL_SKIP;
	61
d631650b JB	62	if (tb_msg[NL80211_ATTR_WIPHY_NAME])
	63	printf("Wiphy %s\n", nla_get_string(tb_msg[NL80211_ATTR_WIPHY_NAME]));
	64
79f99b9a	65	nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
d631650b	66	printf("\tBand %d:\n", bandidx);
79f99b9a JB	67	bandidx++;
	68
	69	nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
	70	nla_len(nl_band), NULL);
	71
3dd781cc JB	72	#ifdef NL80211_BAND_ATTR_HT_CAPA
3dd781cc JB	73	if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
357c1a5d LR	74	__u16 cap = nla_get_u16(tb_band[NL80211_BAND_ATTR_HT_CAPA]);
357c1a5d LR	75	print_ht_capability(cap);
3dd781cc JB	76	}
3dd781cc JB	77	if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
0950993f LR	78	__u8 exponent = nla_get_u8(tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]);
0950993f LR	79	print_ampdu_length(exponent);
3dd781cc JB	80	}
3dd781cc JB	81	if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
0950993f LR	82	__u8 spacing = nla_get_u8(tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]);
0950993f LR	83	print_ampdu_spacing(spacing);
3dd781cc JB	84	}
3dd781cc JB	85	if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
7ddfb679 JB	86	nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]) == 16)
7ddfb679 JB	87	print_ht_mcs(nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]));
3dd781cc JB	88	#endif
3dd781cc JB	89
d631650b	90	printf("\t\tFrequencies:\n");
79f99b9a JB	91
79f99b9a JB	92	nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
379f8397	93	uint32_t freq;
79f99b9a JB	94	nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
	95	nla_len(nl_freq), freq_policy);
	96	if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
	97	continue;
379f8397 JB	98	freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
379f8397 JB	99	printf("\t\t\t* %d MHz [%d]", freq, ieee80211_frequency_to_channel(freq));
c1081c20	100
d102c0b6 JB	101	if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
	102	!tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
	103	printf(" (%.1f dBm)", 0.01 * nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]));
c1081c20	104
79f99b9a	105	open = 0;
ee9cd987	106	if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) {
79f99b9a	107	print_flag("disabled", &open);
ee9cd987 JB	108	goto next;
ee9cd987 JB	109	}
79f99b9a JB	110	if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
	111	print_flag("passive scanning", &open);
	112	if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
	113	print_flag("no IBSS", &open);
	114	if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
	115	print_flag("radar detection", &open);
ee9cd987	116	next:
79f99b9a JB	117	if (open)
	118	printf(")");
	119	printf("\n");
	120	}
	121
75dddccc	122	printf("\t\tBitrates (non-HT):\n");
79f99b9a JB	123
	124	nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
	125	nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
	126	nla_len(nl_rate), rate_policy);
	127	if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
	128	continue;
d631650b	129	printf("\t\t\t* %2.1f Mbps", 0.1 * nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]));
79f99b9a JB	130	open = 0;
	131	if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
	132	print_flag("short preamble supported", &open);
	133	if (open)
	134	printf(")");
	135	printf("\n");
	136	}
	137	}
	138
41be37f2 JB	139	if (tb_msg[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
	140	printf("\tmax # scan SSIDs: %d\n",
	141	nla_get_u8(tb_msg[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]));
f9c112b6 JB	142	if (tb_msg[NL80211_ATTR_MAX_SCAN_IE_LEN])
	143	printf("\tmax scan IEs length: %d bytes\n",
	144	nla_get_u32(tb_msg[NL80211_ATTR_MAX_SCAN_IE_LEN]));
41be37f2	145
625aa4ae JB	146	if (tb_msg[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
	147	unsigned int frag;
	148
	149	frag = nla_get_u32(tb_msg[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
	150	if (frag != (unsigned int)-1)
	151	printf("\tFragmentation threshold: %d\n", frag);
	152	}
	153
	154	if (tb_msg[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
	155	unsigned int rts;
	156
	157	rts = nla_get_u32(tb_msg[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
	158	if (rts != (unsigned int)-1)
	159	printf("\tRTS threshold: %d\n", rts);
	160	}
	161
b2f92dd0 LT	162	if (tb_msg[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
	163	unsigned char coverage;
	164
	165	coverage = nla_get_u8(tb_msg[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
	166	/* See handle_distance() for an explanation where the '450' comes from */
	167	printf("\tCoverage class: %d (up to %dm)\n", coverage, 450 * coverage);
	168	}
	169
6367e71a	170	if (!tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES])
9990c1e9	171	goto commands;
6367e71a	172
d631650b	173	printf("\tSupported interface modes:\n");
541ef425	174	nla_for_each_nested(nl_mode, tb_msg[NL80211_ATTR_SUPPORTED_IFTYPES], rem_mode)
d631650b	175	printf("\t\t * %s\n", iftype_name(nl_mode->nla_type));
6367e71a	176
9990c1e9 MH	177	commands:
	178	if (!tb_msg[NL80211_ATTR_SUPPORTED_COMMANDS])
	179	return NL_SKIP;
	180
	181	printf("\tSupported commands:\n");
	182	nla_for_each_nested(nl_cmd, tb_msg[NL80211_ATTR_SUPPORTED_COMMANDS], rem_cmd)
	183	printf("\t\t * %s\n", command_name(nla_get_u32(nl_cmd)));
	184
79f99b9a JB	185	return NL_SKIP;
	186	}
	187
7c37a24d JB	188	static int handle_info(struct nl80211_state *state,
7c37a24d JB	189	struct nl_cb *cb,
d631650b JB	190	struct nl_msg *msg,
d631650b JB	191	int argc, char **argv)
79f99b9a	192	{
79f99b9a	193	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_phy_handler, NULL);
79f99b9a	194
70391ccf	195	return 0;
79f99b9a	196	}
4698bfc2	197	__COMMAND(NULL, info, "info", NULL, NL80211_CMD_GET_WIPHY, 0, 0, CIB_PHY, handle_info,
ea35fc0b JB	198	"Show capabilities for the specified wireless device.");
	199	TOPLEVEL(list, NULL, NL80211_CMD_GET_WIPHY, NLM_F_DUMP, CIB_NONE, handle_info,
	200	"List all wireless devices and their capabilities.");
01ae06f9	201	TOPLEVEL(phy, NULL, NL80211_CMD_GET_WIPHY, NLM_F_DUMP, CIB_NONE, handle_info, NULL);