[thirdparty/iw.git] / util.c

#include <ctype.h>
#include <netlink/attr.h>
#include <errno.h>
#include <stdbool.h>
#include "iw.h"
#include "nl80211.h"

void mac_addr_n2a(char *mac_addr, unsigned char *arg)
{
	int i, l;

	l = 0;
	for (i = 0; i < ETH_ALEN ; i++) {
		if (i == 0) {
			sprintf(mac_addr+l, "%02x", arg[i]);
			l += 2;
		} else {
			sprintf(mac_addr+l, ":%02x", arg[i]);
			l += 3;
		}
	}
}

int mac_addr_a2n(unsigned char *mac_addr, char *arg)
{
	int i;

	for (i = 0; i < ETH_ALEN ; i++) {
		int temp;
		char *cp = strchr(arg, ':');
		if (cp) {
			*cp = 0;
			cp++;
		}
		if (sscanf(arg, "%x", &temp) != 1)
			return -1;
		if (temp < 0 || temp > 255)
			return -1;

		mac_addr[i] = temp;
		if (!cp)
			break;
		arg = cp;
	}
	if (i < ETH_ALEN - 1)
		return -1;

	return 0;
}

unsigned char *parse_hex(char *hex, size_t *outlen)
{
	size_t len = strlen(hex);
	unsigned char *result = calloc(len/2 + 2, 1);
	int pos = 0;

	if (!result)
		return NULL;

	*outlen = 0;

	while (1) {
		int temp;
		char *cp = strchr(hex, ':');
		if (cp) {
			*cp = 0;
			cp++;
		}
		if (sscanf(hex, "%x", &temp) != 1)
			goto error;
		if (temp < 0 || temp > 255)
			goto error;

		(*outlen)++;

		result[pos++] = temp;
		if (!cp)
			break;
		hex = cp;
	}

	return result;
 error:
	free(result);
	return NULL;
}

static const char *ifmodes[NL80211_IFTYPE_MAX + 1] = {
	"unspecified",
	"IBSS",
	"managed",
	"AP",
	"AP/VLAN",
	"WDS",
	"monitor",
	"mesh point",
	"P2P-client",
	"P2P-GO",
};

static char modebuf[100];

const char *iftype_name(enum nl80211_iftype iftype)
{
	if (iftype <= NL80211_IFTYPE_MAX)
		return ifmodes[iftype];
	sprintf(modebuf, "Unknown mode (%d)", iftype);
	return modebuf;
}

static const char *commands[NL80211_CMD_MAX + 1] = {
	[NL80211_CMD_GET_WIPHY] = "get_wiphy",
	[NL80211_CMD_SET_WIPHY] = "set_wiphy",
	[NL80211_CMD_NEW_WIPHY] = "new_wiphy",
	[NL80211_CMD_DEL_WIPHY] = "del_wiphy",
	[NL80211_CMD_GET_INTERFACE] = "get_interface",
	[NL80211_CMD_SET_INTERFACE] = "set_interface",
	[NL80211_CMD_NEW_INTERFACE] = "new_interface",
	[NL80211_CMD_DEL_INTERFACE] = "del_interface",
	[NL80211_CMD_GET_KEY] = "get_key",
	[NL80211_CMD_SET_KEY] = "set_key",
	[NL80211_CMD_NEW_KEY] = "new_key",
	[NL80211_CMD_DEL_KEY] = "del_key",
	[NL80211_CMD_GET_BEACON] = "get_beacon",
	[NL80211_CMD_SET_BEACON] = "set_beacon",
	[NL80211_CMD_NEW_BEACON] = "new_beacon",
	[NL80211_CMD_DEL_BEACON] = "del_beacon",
	[NL80211_CMD_GET_STATION] = "get_station",
	[NL80211_CMD_SET_STATION] = "set_station",
	[NL80211_CMD_NEW_STATION] = "new_station",
	[NL80211_CMD_DEL_STATION] = "del_station",
	[NL80211_CMD_GET_MPATH] = "get_mpath",
	[NL80211_CMD_SET_MPATH] = "set_mpath",
	[NL80211_CMD_NEW_MPATH] = "new_mpath",
	[NL80211_CMD_DEL_MPATH] = "del_mpath",
	[NL80211_CMD_SET_BSS] = "set_bss",
	[NL80211_CMD_SET_REG] = "set_reg",
	[NL80211_CMD_REQ_SET_REG] = "reg_set_reg",
	[NL80211_CMD_GET_MESH_PARAMS] = "get_mesh_params",
	[NL80211_CMD_SET_MESH_PARAMS] = "set_mesh_params",
	[NL80211_CMD_SET_MGMT_EXTRA_IE] = "set_mgmt_extra_ie",
	[NL80211_CMD_GET_REG] = "get_reg",
	[NL80211_CMD_GET_SCAN] = "get_scan",
	[NL80211_CMD_TRIGGER_SCAN] = "trigger_scan",
	[NL80211_CMD_NEW_SCAN_RESULTS] = "new_scan_results",
	[NL80211_CMD_SCAN_ABORTED] = "scan_aborted",
	[NL80211_CMD_REG_CHANGE] = "reg_change",
	[NL80211_CMD_AUTHENTICATE] = "authenticate",
	[NL80211_CMD_ASSOCIATE] = "associate",
	[NL80211_CMD_DEAUTHENTICATE] = "deauthenticate",
	[NL80211_CMD_DISASSOCIATE] = "disassociate",
	[NL80211_CMD_MICHAEL_MIC_FAILURE] = "michael_mic_failure",
	[NL80211_CMD_REG_BEACON_HINT] = "reg_beacon_hint",
	[NL80211_CMD_JOIN_IBSS] = "join_ibss",
	[NL80211_CMD_LEAVE_IBSS] = "leave_ibss",
	[NL80211_CMD_TESTMODE] = "testmode",
	[NL80211_CMD_CONNECT] = "connect",
	[NL80211_CMD_ROAM] = "roam",
	[NL80211_CMD_DISCONNECT] = "disconnect",
	[NL80211_CMD_SET_WIPHY_NETNS] = "set_wiphy_netns",
	[NL80211_CMD_GET_SURVEY] = "get_survey",
	[NL80211_CMD_SET_PMKSA] = "set_pmksa",
	[NL80211_CMD_DEL_PMKSA] = "del_pmksa",
	[NL80211_CMD_FLUSH_PMKSA] = "flush_pmksa",
	[NL80211_CMD_REMAIN_ON_CHANNEL] = "remain_on_channel",
	[NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL] = "cancel_remain_on_channel",
	[NL80211_CMD_SET_TX_BITRATE_MASK] = "set_tx_bitrate_mask",
	[NL80211_CMD_REGISTER_ACTION] = "register_action",
	[NL80211_CMD_ACTION] = "action",
	[NL80211_CMD_SET_CHANNEL] = "set_channel",
	[NL80211_CMD_SET_WDS_PEER] = "set_wds_peer",
	[NL80211_CMD_FRAME_WAIT_CANCEL] = "frame_wait_cancel",
	[NL80211_CMD_JOIN_MESH] = "join_mesh",
	[NL80211_CMD_LEAVE_MESH] = "leave_mesh",
};

static char cmdbuf[100];

const char *command_name(enum nl80211_commands cmd)
{
	if (cmd <= NL80211_CMD_MAX && commands[cmd])
		return commands[cmd];
	sprintf(cmdbuf, "Unknown command (%d)", cmd);
	return cmdbuf;
}

int ieee80211_channel_to_frequency(int chan)
{
	if (chan < 14)
		return 2407 + chan * 5;

	if (chan == 14)
		return 2484;

	/* FIXME: dot11ChannelStartingFactor (802.11-2007 17.3.8.3.2) */
	return (chan + 1000) * 5;
}

int ieee80211_frequency_to_channel(int freq)
{
	if (freq == 2484)
		return 14;

	if (freq < 2484)
		return (freq - 2407) / 5;

	/* FIXME: dot11ChannelStartingFactor (802.11-2007 17.3.8.3.2) */
	return freq/5 - 1000;
}

void print_ssid_escaped(const uint8_t len, const uint8_t *data)
{
	int i;

	for (i = 0; i < len; i++) {
		if (isprint(data[i]))
			printf("%c", data[i]);
		else
			printf("\\x%.2x", data[i]);
	}
}

static int hex2num(char digit)
{
	if (!isxdigit(digit))
		return -1;
	if (isdigit(digit))
		return digit - '0';
	return tolower(digit) - 'a' + 10;
}

static int hex2byte(char *hex)
{
	int d1, d2;

	d1 = hex2num(hex[0]);
	if (d1 < 0)
		return -1;
	d2 = hex2num(hex[1]);
	if (d2 < 0)
		return -1;
	return (d1 << 4) | d2;
}

static char *hex2bin(char *hex, char *buf)
{
	char *result = buf;
	int d;

	while (hex[0]) {
		d = hex2byte(hex);
		if (d < 0)
			return NULL;
		buf[0] = d;
		buf++;
		hex += 2;
	}

	return result;
}

int parse_keys(struct nl_msg *msg, char **argv, int argc)
{
	struct nlattr *keys;
	int i = 0;
	bool have_default = false;
	char keybuf[13];

	if (!argc)
		return 1;

	NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);

	keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
	if (!keys)
		return -ENOBUFS;

	do {
		char *arg = *argv;
		int pos = 0, keylen;
		struct nlattr *key = nla_nest_start(msg, ++i);
		char *keydata;

		if (!key)
			return -ENOBUFS;

		if (arg[pos] == 'd') {
			NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
			pos++;
			if (arg[pos] == ':')
				pos++;
			have_default = true;
		}

		if (!isdigit(arg[pos]))
			goto explain;
		NLA_PUT_U8(msg, NL80211_KEY_IDX, arg[pos++] - '0');
		if (arg[pos++] != ':')
			goto explain;
		keydata = arg + pos;
		switch (strlen(keydata)) {
		case 10:
			keydata = hex2bin(keydata, keybuf);
		case 5:
			NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 0x000FAC01);
			keylen = 5;
			break;
		case 26:
			keydata = hex2bin(keydata, keybuf);
		case 13:
			NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 0x000FAC05);
			keylen = 13;
			break;
		default:
			goto explain;
		}

		if (!keydata)
			goto explain;

		NLA_PUT(msg, NL80211_KEY_DATA, keylen, keydata);

		argv++;
		argc--;

		/* one key should be TX key */
		if (!have_default && !argc)
			NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);

		nla_nest_end(msg, key);
	} while (argc);

	nla_nest_end(msg, keys);

	return 0;
 nla_put_failure:
	return -ENOBUFS;
 explain:
	fprintf(stderr, "key must be [d:]index:data where\n"
			"  'd:'     means default (transmit) key\n"
			"  'index:' is a single digit (0-3)\n"
			"  'data'   must be 5 or 13 ascii chars\n"
			"           or 10 or 26 hex digits\n"
			"for example: d:2:6162636465 is the same as d:2:abcde\n");
	return 2;
}

static void print_mcs_index(const __u8 *mcs)
{
	unsigned int mcs_bit, prev_bit = -2, prev_cont = 0;

	for (mcs_bit = 0; mcs_bit <= 76; mcs_bit++) {
		unsigned int mcs_octet = mcs_bit/8;
		unsigned int MCS_RATE_BIT = 1 << mcs_bit % 8;
		bool mcs_rate_idx_set;

		mcs_rate_idx_set = !!(mcs[mcs_octet] & MCS_RATE_BIT);

		if (!mcs_rate_idx_set)
			continue;

		if (prev_bit != mcs_bit - 1) {
			if (prev_bit != -2)
				printf("%d, ", prev_bit);
			else
				printf(" ");
			printf("%d", mcs_bit);
			prev_cont = 0;
		} else if (!prev_cont) {
			printf("-");
			prev_cont = 1;
		}

		prev_bit = mcs_bit;
	}

	if (prev_cont)
		printf("%d", prev_bit);
	printf("\n");
}

/*
 * There are only 4 possible values, we just use a case instead of computing it,
 * but technically this can also be computed through the formula:
 *
 * Max AMPDU length = (2 ^ (13 + exponent)) - 1 bytes
 */
static __u32 compute_ampdu_length(__u8 exponent)
{
	switch (exponent) {
	case 0: return 8191;  /* (2 ^(13 + 0)) -1 */
	case 1: return 16383; /* (2 ^(13 + 1)) -1 */
	case 2: return 32767; /* (2 ^(13 + 2)) -1 */
	case 3: return 65535; /* (2 ^(13 + 3)) -1 */
	default: return 0;
	}
}

static const char *print_ampdu_space(__u8 space)
{
	switch (space) {
	case 0: return "No restriction";
	case 1: return "1/4 usec";
	case 2: return "1/2 usec";
	case 3: return "1 usec";
	case 4: return "2 usec";
	case 5: return "4 usec";
	case 6: return "8 usec";
	case 7: return "16 usec";
	default:
		return "BUG (spacing more than 3 bits!)";
	}
}

void print_ampdu_length(__u8 exponent)
{
	__u32 max_ampdu_length;

	max_ampdu_length = compute_ampdu_length(exponent);

	if (max_ampdu_length) {
		printf("\t\tMaximum RX AMPDU length %d bytes (exponent: 0x0%02x)\n",
		       max_ampdu_length, exponent);
        } else {
		printf("\t\tMaximum RX AMPDU length: unrecognized bytes "
		       "(exponent: %d)\n", exponent);
	}
}

void print_ampdu_spacing(__u8 spacing)
{
        printf("\t\tMinimum RX AMPDU time spacing: %s (0x%02x)\n",
               print_ampdu_space(spacing), spacing);
}

void print_ht_capability(__u16 cap)
{
#define PRINT_HT_CAP(_cond, _str) \
	do { \
		if (_cond) \
			printf("\t\t\t" _str "\n"); \
	} while (0)

	printf("\t\tCapabilities: 0x%02x\n", cap);

	PRINT_HT_CAP((cap & BIT(0)), "RX LDPC");
	PRINT_HT_CAP((cap & BIT(1)), "HT20/HT40");
	PRINT_HT_CAP(!(cap & BIT(1)), "HT20");

	PRINT_HT_CAP(((cap >> 2) & 0x3) == 0, "Static SM Power Save");
	PRINT_HT_CAP(((cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
	PRINT_HT_CAP(((cap >> 2) & 0x3) == 3, "SM Power Save disabled");

	PRINT_HT_CAP((cap & BIT(4)), "RX Greenfield");
	PRINT_HT_CAP((cap & BIT(5)), "RX HT20 SGI");
	PRINT_HT_CAP((cap & BIT(6)), "RX HT40 SGI");
	PRINT_HT_CAP((cap & BIT(7)), "TX STBC");

	PRINT_HT_CAP(((cap >> 8) & 0x3) == 0, "No RX STBC");
	PRINT_HT_CAP(((cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
	PRINT_HT_CAP(((cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
	PRINT_HT_CAP(((cap >> 8) & 0x3) == 3, "RX STBC 3-streams");

	PRINT_HT_CAP((cap & BIT(10)), "HT Delayed Block Ack");

	PRINT_HT_CAP(!(cap & BIT(11)), "Max AMSDU length: 3839 bytes");
	PRINT_HT_CAP((cap & BIT(11)), "Max AMSDU length: 7935 bytes");

	/*
	 * For beacons and probe response this would mean the BSS
	 * does or does not allow the usage of DSSS/CCK HT40.
	 * Otherwise it means the STA does or does not use
	 * DSSS/CCK HT40.
	 */
	PRINT_HT_CAP((cap & BIT(12)), "DSSS/CCK HT40");
	PRINT_HT_CAP(!(cap & BIT(12)), "No DSSS/CCK HT40");

	/* BIT(13) is reserved */

	PRINT_HT_CAP((cap & BIT(14)), "40 MHz Intolerant");

	PRINT_HT_CAP((cap & BIT(15)), "L-SIG TXOP protection");
#undef PRINT_HT_CAP
}

void print_ht_mcs(const __u8 *mcs)
{
	/* As defined in 7.3.2.57.4 Supported MCS Set field */
	unsigned int tx_max_num_spatial_streams, max_rx_supp_data_rate;
	bool tx_mcs_set_defined, tx_mcs_set_equal, tx_unequal_modulation;

	max_rx_supp_data_rate = ((mcs[10] >> 8) & ((mcs[11] & 0x3) << 8));
	tx_mcs_set_defined = !!(mcs[12] & (1 << 0));
	tx_mcs_set_equal = !(mcs[12] & (1 << 1));
	tx_max_num_spatial_streams = ((mcs[12] >> 2) & 3) + 1;
	tx_unequal_modulation = !!(mcs[12] & (1 << 4));

	if (max_rx_supp_data_rate)
		printf("\t\tHT Max RX data rate: %d Mbps\n", max_rx_supp_data_rate);
	/* XXX: else see 9.6.0e.5.3 how to get this I think */

	if (tx_mcs_set_defined) {
		if (tx_mcs_set_equal) {
			printf("\t\tHT TX/RX MCS rate indexes supported:");
			print_mcs_index(mcs);
		} else {
			printf("\t\tHT RX MCS rate indexes supported:");
			print_mcs_index(mcs);

			if (tx_unequal_modulation)
				printf("\t\tTX unequal modulation supported\n");
			else
				printf("\t\tTX unequal modulation not supported\n");

			printf("\t\tHT TX Max spatial streams: %d\n",
				tx_max_num_spatial_streams);

			printf("\t\tHT TX MCS rate indexes supported may differ\n");
		}
	} else {
		printf("\t\tHT RX MCS rate indexes supported:");
		print_mcs_index(mcs);
		printf("\t\tHT TX MCS rate indexes are undefined\n");
	}
}
Commit	Line	Data
748f8489	1	#include <ctype.h>
51e9bd80 JB	2	#include <netlink/attr.h>
	3	#include <errno.h>
	4	#include <stdbool.h>
3d1e8704	5	#include "iw.h"
f5f7b1d0	6	#include "nl80211.h"
3d1e8704	7
febeb0c0	8	void mac_addr_n2a(char mac_addr, unsigned char arg)
3d1e8704	9	{
53e5ce7a	10	int i, l;
3d1e8704 LCC	11
	12	l = 0;
	13	for (i = 0; i < ETH_ALEN ; i++) {
	14	if (i == 0) {
53e5ce7a	15	sprintf(mac_addr+l, "%02x", arg[i]);
3d1e8704 LCC	16	l += 2;
3d1e8704 LCC	17	} else {
53e5ce7a	18	sprintf(mac_addr+l, ":%02x", arg[i]);
3d1e8704 LCC	19	l += 3;
	20	}
	21	}
3d1e8704 LCC	22	}
	23
	24	int mac_addr_a2n(unsigned char mac_addr, char arg)
	25	{
	26	int i;
	27
	28	for (i = 0; i < ETH_ALEN ; i++) {
	29	int temp;
	30	char *cp = strchr(arg, ':');
	31	if (cp) {
	32	*cp = 0;
	33	cp++;
	34	}
	35	if (sscanf(arg, "%x", &temp) != 1)
	36	return -1;
	37	if (temp < 0 \|\| temp > 255)
	38	return -1;
	39
	40	mac_addr[i] = temp;
	41	if (!cp)
	42	break;
	43	arg = cp;
	44	}
	45	if (i < ETH_ALEN - 1)
	46	return -1;
	47
	48	return 0;
	49	}
541ef425	50
236d4191 JB	51	unsigned char parse_hex(char hex, size_t *outlen)
	52	{
	53	size_t len = strlen(hex);
	54	unsigned char *result = calloc(len/2 + 2, 1);
	55	int pos = 0;
	56
	57	if (!result)
	58	return NULL;
	59
	60	*outlen = 0;
	61
	62	while (1) {
	63	int temp;
	64	char *cp = strchr(hex, ':');
	65	if (cp) {
	66	*cp = 0;
	67	cp++;
	68	}
	69	if (sscanf(hex, "%x", &temp) != 1)
	70	goto error;
	71	if (temp < 0 \|\| temp > 255)
	72	goto error;
	73
	74	(*outlen)++;
	75
	76	result[pos++] = temp;
	77	if (!cp)
	78	break;
	79	hex = cp;
	80	}
	81
	82	return result;
	83	error:
	84	free(result);
	85	return NULL;
	86	}
	87
541ef425 JB	88	static const char *ifmodes[NL80211_IFTYPE_MAX + 1] = {
	89	"unspecified",
	90	"IBSS",
34e78ed0	91	"managed",
541ef425	92	"AP",
34e78ed0	93	"AP/VLAN",
541ef425	94	"WDS",
34e78ed0	95	"monitor",
a4464243 JB	96	"mesh point",
	97	"P2P-client",
	98	"P2P-GO",
541ef425 JB	99	};
	100
	101	static char modebuf[100];
	102
	103	const char *iftype_name(enum nl80211_iftype iftype)
	104	{
	105	if (iftype <= NL80211_IFTYPE_MAX)
	106	return ifmodes[iftype];
	107	sprintf(modebuf, "Unknown mode (%d)", iftype);
	108	return modebuf;
	109	}
379f8397	110
9990c1e9	111	static const char *commands[NL80211_CMD_MAX + 1] = {
06339499 JB	112	[NL80211_CMD_GET_WIPHY] = "get_wiphy",
	113	[NL80211_CMD_SET_WIPHY] = "set_wiphy",
	114	[NL80211_CMD_NEW_WIPHY] = "new_wiphy",
	115	[NL80211_CMD_DEL_WIPHY] = "del_wiphy",
	116	[NL80211_CMD_GET_INTERFACE] = "get_interface",
	117	[NL80211_CMD_SET_INTERFACE] = "set_interface",
	118	[NL80211_CMD_NEW_INTERFACE] = "new_interface",
	119	[NL80211_CMD_DEL_INTERFACE] = "del_interface",
	120	[NL80211_CMD_GET_KEY] = "get_key",
	121	[NL80211_CMD_SET_KEY] = "set_key",
	122	[NL80211_CMD_NEW_KEY] = "new_key",
	123	[NL80211_CMD_DEL_KEY] = "del_key",
	124	[NL80211_CMD_GET_BEACON] = "get_beacon",
	125	[NL80211_CMD_SET_BEACON] = "set_beacon",
	126	[NL80211_CMD_NEW_BEACON] = "new_beacon",
	127	[NL80211_CMD_DEL_BEACON] = "del_beacon",
	128	[NL80211_CMD_GET_STATION] = "get_station",
	129	[NL80211_CMD_SET_STATION] = "set_station",
	130	[NL80211_CMD_NEW_STATION] = "new_station",
	131	[NL80211_CMD_DEL_STATION] = "del_station",
	132	[NL80211_CMD_GET_MPATH] = "get_mpath",
	133	[NL80211_CMD_SET_MPATH] = "set_mpath",
	134	[NL80211_CMD_NEW_MPATH] = "new_mpath",
	135	[NL80211_CMD_DEL_MPATH] = "del_mpath",
	136	[NL80211_CMD_SET_BSS] = "set_bss",
	137	[NL80211_CMD_SET_REG] = "set_reg",
	138	[NL80211_CMD_REQ_SET_REG] = "reg_set_reg",
	139	[NL80211_CMD_GET_MESH_PARAMS] = "get_mesh_params",
	140	[NL80211_CMD_SET_MESH_PARAMS] = "set_mesh_params",
	141	[NL80211_CMD_SET_MGMT_EXTRA_IE] = "set_mgmt_extra_ie",
	142	[NL80211_CMD_GET_REG] = "get_reg",
	143	[NL80211_CMD_GET_SCAN] = "get_scan",
	144	[NL80211_CMD_TRIGGER_SCAN] = "trigger_scan",
	145	[NL80211_CMD_NEW_SCAN_RESULTS] = "new_scan_results",
	146	[NL80211_CMD_SCAN_ABORTED] = "scan_aborted",
	147	[NL80211_CMD_REG_CHANGE] = "reg_change",
	148	[NL80211_CMD_AUTHENTICATE] = "authenticate",
	149	[NL80211_CMD_ASSOCIATE] = "associate",
	150	[NL80211_CMD_DEAUTHENTICATE] = "deauthenticate",
	151	[NL80211_CMD_DISASSOCIATE] = "disassociate",
	152	[NL80211_CMD_MICHAEL_MIC_FAILURE] = "michael_mic_failure",
	153	[NL80211_CMD_REG_BEACON_HINT] = "reg_beacon_hint",
	154	[NL80211_CMD_JOIN_IBSS] = "join_ibss",
	155	[NL80211_CMD_LEAVE_IBSS] = "leave_ibss",
	156	[NL80211_CMD_TESTMODE] = "testmode",
	157	[NL80211_CMD_CONNECT] = "connect",
	158	[NL80211_CMD_ROAM] = "roam",
	159	[NL80211_CMD_DISCONNECT] = "disconnect",
	160	[NL80211_CMD_SET_WIPHY_NETNS] = "set_wiphy_netns",
	161	[NL80211_CMD_GET_SURVEY] = "get_survey",
	162	[NL80211_CMD_SET_PMKSA] = "set_pmksa",
	163	[NL80211_CMD_DEL_PMKSA] = "del_pmksa",
	164	[NL80211_CMD_FLUSH_PMKSA] = "flush_pmksa",
	165	[NL80211_CMD_REMAIN_ON_CHANNEL] = "remain_on_channel",
	166	[NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL] = "cancel_remain_on_channel",
	167	[NL80211_CMD_SET_TX_BITRATE_MASK] = "set_tx_bitrate_mask",
	168	[NL80211_CMD_REGISTER_ACTION] = "register_action",
	169	[NL80211_CMD_ACTION] = "action",
7b96e9e2	170	[NL80211_CMD_SET_CHANNEL] = "set_channel",
dcf57038 JB	171	[NL80211_CMD_SET_WDS_PEER] = "set_wds_peer",
	172	[NL80211_CMD_FRAME_WAIT_CANCEL] = "frame_wait_cancel",
	173	[NL80211_CMD_JOIN_MESH] = "join_mesh",
	174	[NL80211_CMD_LEAVE_MESH] = "leave_mesh",
9990c1e9 MH	175	};
	176
	177	static char cmdbuf[100];
	178
	179	const char *command_name(enum nl80211_commands cmd)
	180	{
73780397	181	if (cmd <= NL80211_CMD_MAX && commands[cmd])
9990c1e9 MH	182	return commands[cmd];
	183	sprintf(cmdbuf, "Unknown command (%d)", cmd);
	184	return cmdbuf;
	185	}
	186
379f8397 JB	187	int ieee80211_channel_to_frequency(int chan)
	188	{
	189	if (chan < 14)
	190	return 2407 + chan * 5;
	191
	192	if (chan == 14)
	193	return 2484;
	194
	195	/* FIXME: dot11ChannelStartingFactor (802.11-2007 17.3.8.3.2) */
	196	return (chan + 1000) * 5;
	197	}
	198
	199	int ieee80211_frequency_to_channel(int freq)
	200	{
	201	if (freq == 2484)
	202	return 14;
	203
	204	if (freq < 2484)
	205	return (freq - 2407) / 5;
	206
	207	/* FIXME: dot11ChannelStartingFactor (802.11-2007 17.3.8.3.2) */
	208	return freq/5 - 1000;
	209	}
748f8489 JB	210
	211	void print_ssid_escaped(const uint8_t len, const uint8_t *data)
	212	{
	213	int i;
	214
	215	for (i = 0; i < len; i++) {
	216	if (isprint(data[i]))
	217	printf("%c", data[i]);
	218	else
	219	printf("\\x%.2x", data[i]);
	220	}
	221	}
51e9bd80 JB	222
	223	static int hex2num(char digit)
	224	{
	225	if (!isxdigit(digit))
	226	return -1;
	227	if (isdigit(digit))
	228	return digit - '0';
	229	return tolower(digit) - 'a' + 10;
	230	}
	231
	232	static int hex2byte(char *hex)
	233	{
	234	int d1, d2;
	235
	236	d1 = hex2num(hex[0]);
	237	if (d1 < 0)
	238	return -1;
	239	d2 = hex2num(hex[1]);
	240	if (d2 < 0)
	241	return -1;
	242	return (d1 << 4) \| d2;
	243	}
	244
	245	static char hex2bin(char hex, char *buf)
	246	{
	247	char *result = buf;
	248	int d;
	249
	250	while (hex[0]) {
	251	d = hex2byte(hex);
	252	if (d < 0)
	253	return NULL;
	254	buf[0] = d;
	255	buf++;
	256	hex += 2;
	257	}
	258
	259	return result;
	260	}
	261
	262	int parse_keys(struct nl_msg msg, char *argv, int argc)
	263	{
	264	struct nlattr *keys;
	265	int i = 0;
041581ce	266	bool have_default = false;
51e9bd80 JB	267	char keybuf[13];
	268
	269	if (!argc)
	270	return 1;
	271
	272	NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
	273
	274	keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
	275	if (!keys)
	276	return -ENOBUFS;
	277
	278	do {
	279	char arg = argv;
	280	int pos = 0, keylen;
	281	struct nlattr *key = nla_nest_start(msg, ++i);
	282	char *keydata;
	283
	284	if (!key)
	285	return -ENOBUFS;
	286
	287	if (arg[pos] == 'd') {
	288	NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
	289	pos++;
	290	if (arg[pos] == ':')
	291	pos++;
041581ce	292	have_default = true;
51e9bd80 JB	293	}
	294
	295	if (!isdigit(arg[pos]))
	296	goto explain;
	297	NLA_PUT_U8(msg, NL80211_KEY_IDX, arg[pos++] - '0');
	298	if (arg[pos++] != ':')
	299	goto explain;
	300	keydata = arg + pos;
	301	switch (strlen(keydata)) {
	302	case 10:
	303	keydata = hex2bin(keydata, keybuf);
	304	case 5:
	305	NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 0x000FAC01);
	306	keylen = 5;
	307	break;
	308	case 26:
	309	keydata = hex2bin(keydata, keybuf);
	310	case 13:
	311	NLA_PUT_U32(msg, NL80211_KEY_CIPHER, 0x000FAC05);
	312	keylen = 13;
	313	break;
	314	default:
	315	goto explain;
	316	}
	317
	318	if (!keydata)
	319	goto explain;
	320
	321	NLA_PUT(msg, NL80211_KEY_DATA, keylen, keydata);
	322
51e9bd80 JB	323	argv++;
51e9bd80 JB	324	argc--;
041581ce JB	325
	326	/* one key should be TX key */
	327	if (!have_default && !argc)
	328	NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
	329
	330	nla_nest_end(msg, key);
51e9bd80 JB	331	} while (argc);
	332
	333	nla_nest_end(msg, keys);
	334
	335	return 0;
	336	nla_put_failure:
	337	return -ENOBUFS;
	338	explain:
	339	fprintf(stderr, "key must be [d:]index:data where\n"
	340	" 'd:' means default (transmit) key\n"
	341	" 'index:' is a single digit (0-3)\n"
	342	" 'data' must be 5 or 13 ascii chars\n"
	343	" or 10 or 26 hex digits\n"
	344	"for example: d:2:6162636465 is the same as d:2:abcde\n");
	345	return 2;
	346	}
deb3501c	347
7ddfb679	348	static void print_mcs_index(const __u8 *mcs)
deb3501c	349	{
04953e90 JB	350	unsigned int mcs_bit, prev_bit = -2, prev_cont = 0;
	351
	352	for (mcs_bit = 0; mcs_bit <= 76; mcs_bit++) {
	353	unsigned int mcs_octet = mcs_bit/8;
	354	unsigned int MCS_RATE_BIT = 1 << mcs_bit % 8;
	355	bool mcs_rate_idx_set;
	356
	357	mcs_rate_idx_set = !!(mcs[mcs_octet] & MCS_RATE_BIT);
	358
	359	if (!mcs_rate_idx_set)
	360	continue;
	361
	362	if (prev_bit != mcs_bit - 1) {
	363	if (prev_bit != -2)
	364	printf("%d, ", prev_bit);
	365	else
	366	printf(" ");
	367	printf("%d", mcs_bit);
	368	prev_cont = 0;
	369	} else if (!prev_cont) {
	370	printf("-");
	371	prev_cont = 1;
	372	}
	373
	374	prev_bit = mcs_bit;
	375	}
deb3501c	376
04953e90 JB	377	if (prev_cont)
	378	printf("%d", prev_bit);
	379	printf("\n");
deb3501c	380	}
0950993f LR	381
	382	/*
	383	* There are only 4 possible values, we just use a case instead of computing it,
	384	* but technically this can also be computed through the formula:
	385	*
	386	* Max AMPDU length = (2 ^ (13 + exponent)) - 1 bytes
	387	*/
	388	static __u32 compute_ampdu_length(__u8 exponent)
	389	{
	390	switch (exponent) {
	391	case 0: return 8191; /* (2 ^(13 + 0)) -1 */
	392	case 1: return 16383; /* (2 ^(13 + 1)) -1 */
	393	case 2: return 32767; /* (2 ^(13 + 2)) -1 */
	394	case 3: return 65535; /* (2 ^(13 + 3)) -1 */
	395	default: return 0;
	396	}
	397	}
	398
	399	static const char *print_ampdu_space(__u8 space)
	400	{
	401	switch (space) {
	402	case 0: return "No restriction";
	403	case 1: return "1/4 usec";
	404	case 2: return "1/2 usec";
	405	case 3: return "1 usec";
	406	case 4: return "2 usec";
	407	case 5: return "4 usec";
	408	case 6: return "8 usec";
	409	case 7: return "16 usec";
	410	default:
7ae93cd5	411	return "BUG (spacing more than 3 bits!)";
0950993f LR	412	}
	413	}
	414
	415	void print_ampdu_length(__u8 exponent)
	416	{
04953e90	417	__u32 max_ampdu_length;
0950993f LR	418
	419	max_ampdu_length = compute_ampdu_length(exponent);
	420
	421	if (max_ampdu_length) {
	422	printf("\t\tMaximum RX AMPDU length %d bytes (exponent: 0x0%02x)\n",
	423	max_ampdu_length, exponent);
	424	} else {
	425	printf("\t\tMaximum RX AMPDU length: unrecognized bytes "
	426	"(exponent: %d)\n", exponent);
	427	}
	428	}
	429
	430	void print_ampdu_spacing(__u8 spacing)
	431	{
	432	printf("\t\tMinimum RX AMPDU time spacing: %s (0x%02x)\n",
	433	print_ampdu_space(spacing), spacing);
	434	}
357c1a5d LR	435
	436	void print_ht_capability(__u16 cap)
	437	{
	438	#define PRINT_HT_CAP(_cond, _str) \
	439	do { \
	440	if (_cond) \
	441	printf("\t\t\t" _str "\n"); \
	442	} while (0)
	443
	444	printf("\t\tCapabilities: 0x%02x\n", cap);
	445
028c0de5	446	PRINT_HT_CAP((cap & BIT(0)), "RX LDPC");
357c1a5d LR	447	PRINT_HT_CAP((cap & BIT(1)), "HT20/HT40");
	448	PRINT_HT_CAP(!(cap & BIT(1)), "HT20");
	449
	450	PRINT_HT_CAP(((cap >> 2) & 0x3) == 0, "Static SM Power Save");
	451	PRINT_HT_CAP(((cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
	452	PRINT_HT_CAP(((cap >> 2) & 0x3) == 3, "SM Power Save disabled");
	453
	454	PRINT_HT_CAP((cap & BIT(4)), "RX Greenfield");
	455	PRINT_HT_CAP((cap & BIT(5)), "RX HT20 SGI");
	456	PRINT_HT_CAP((cap & BIT(6)), "RX HT40 SGI");
	457	PRINT_HT_CAP((cap & BIT(7)), "TX STBC");
	458
	459	PRINT_HT_CAP(((cap >> 8) & 0x3) == 0, "No RX STBC");
	460	PRINT_HT_CAP(((cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
	461	PRINT_HT_CAP(((cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
	462	PRINT_HT_CAP(((cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
	463
	464	PRINT_HT_CAP((cap & BIT(10)), "HT Delayed Block Ack");
	465
c79c7464 CL	466	PRINT_HT_CAP(!(cap & BIT(11)), "Max AMSDU length: 3839 bytes");
c79c7464 CL	467	PRINT_HT_CAP((cap & BIT(11)), "Max AMSDU length: 7935 bytes");
357c1a5d LR	468
	469	/*
	470	* For beacons and probe response this would mean the BSS
	471	* does or does not allow the usage of DSSS/CCK HT40.
	472	* Otherwise it means the STA does or does not use
	473	* DSSS/CCK HT40.
	474	*/
	475	PRINT_HT_CAP((cap & BIT(12)), "DSSS/CCK HT40");
	476	PRINT_HT_CAP(!(cap & BIT(12)), "No DSSS/CCK HT40");
	477
	478	/* BIT(13) is reserved */
	479
	480	PRINT_HT_CAP((cap & BIT(14)), "40 MHz Intolerant");
	481
	482	PRINT_HT_CAP((cap & BIT(15)), "L-SIG TXOP protection");
	483	#undef PRINT_HT_CAP
	484	}
7ddfb679 JB	485
	486	void print_ht_mcs(const __u8 *mcs)
	487	{
	488	/* As defined in 7.3.2.57.4 Supported MCS Set field */
	489	unsigned int tx_max_num_spatial_streams, max_rx_supp_data_rate;
	490	bool tx_mcs_set_defined, tx_mcs_set_equal, tx_unequal_modulation;
	491
	492	max_rx_supp_data_rate = ((mcs[10] >> 8) & ((mcs[11] & 0x3) << 8));
	493	tx_mcs_set_defined = !!(mcs[12] & (1 << 0));
	494	tx_mcs_set_equal = !(mcs[12] & (1 << 1));
	495	tx_max_num_spatial_streams = ((mcs[12] >> 2) & 3) + 1;
	496	tx_unequal_modulation = !!(mcs[12] & (1 << 4));
	497
	498	if (max_rx_supp_data_rate)
	499	printf("\t\tHT Max RX data rate: %d Mbps\n", max_rx_supp_data_rate);
	500	/* XXX: else see 9.6.0e.5.3 how to get this I think */
	501
	502	if (tx_mcs_set_defined) {
	503	if (tx_mcs_set_equal) {
2a79feb0	504	printf("\t\tHT TX/RX MCS rate indexes supported:");
7ddfb679 JB	505	print_mcs_index(mcs);
	506	} else {
	507	printf("\t\tHT RX MCS rate indexes supported:");
	508	print_mcs_index(mcs);
	509
	510	if (tx_unequal_modulation)
	511	printf("\t\tTX unequal modulation supported\n");
	512	else
	513	printf("\t\tTX unequal modulation not supported\n");
	514
	515	printf("\t\tHT TX Max spatial streams: %d\n",
	516	tx_max_num_spatial_streams);
	517
	518	printf("\t\tHT TX MCS rate indexes supported may differ\n");
	519	}
	520	} else {
	521	printf("\t\tHT RX MCS rate indexes supported:");
	522	print_mcs_index(mcs);
089bb35d	523	printf("\t\tHT TX MCS rate indexes are undefined\n");
7ddfb679 JB	524	}
7ddfb679 JB	525	}