#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>

#define CCK 1
#define OFDM 2

struct ieee80211_rate_table {
	int		rateCount;		/* NB: for proper padding */
	uint8_t		rateCodeToIndex[256];	/* back mapping */
	struct {
		uint8_t		phy;		/* CCK/OFDM/TURBO */
		uint32_t	rateKbps;	/* transfer rate in kbs */
		uint8_t		shortPreamble;	/* mask for enabling short
						 * preamble in CCK rate code */
		uint8_t		dot11Rate;	/* value for supported rates
						 * info element of MLME */
		uint8_t		controlRate;	/* index of next lower basic
						 * rate; used for dur. calcs */
		uint16_t	lpAckDuration;	/* long preamble ACK dur. */
		uint16_t	spAckDuration;	/* short preamble ACK dur. */
	} info[32];
};

static struct ieee80211_rate_table ieee80211_11g_table = {
#if 0
	12,  /* number of rates */
#else
	3,
#endif
	{ 0 },
	{
/*                               short            ctrl  */
/*                            Preamble  dot11Rate Rate */
#if 0
/*   1 Mb */ {  CCK,     1000,    0x00, (0x80| 2),   0 },
#endif
/*   2 Mb */ {  CCK,     2000,    0x04, (0x80| 4),   1 },
/* 5.5 Mb */ {  CCK,     5500,    0x04, (0x80|11),   2 },
/*  11 Mb */ {  CCK,    11000,    0x04, (0x80|22),   3 },
#if 0
/*   6 Mb */ {  OFDM,    6000,    0x00,        12,   4 },
/*   9 Mb */ {  OFDM,    9000,    0x00,        18,   4 },
/*  12 Mb */ {  OFDM,   12000,    0x00,        24,   6 },
/*  18 Mb */ {  OFDM,   18000,    0x00,        36,   6 },
/*  24 Mb */ {  OFDM,   24000,    0x00,        48,   8 },
/*  36 Mb */ {  OFDM,   36000,    0x00,        72,   8 },
/*  48 Mb */ {  OFDM,   48000,    0x00,        96,   8 },
/*  54 Mb */ {  OFDM,   54000,    0x00,       108,   8 }
#endif
	},
};

int
main(void)
{
#define	N(a)	(sizeof(a)/sizeof(a[0]))
#define	WLAN_CTRL_FRAME_SIZE	(2+2+6+4)	/* ACK+FCS */
	struct ieee80211_rate_table *rt = &ieee80211_11g_table;
	int i;

	for (i = 0; i < N(rt->rateCodeToIndex); i++)
		rt->rateCodeToIndex[i] = (uint8_t) -1;
	for (i = 0; i < rt->rateCount; i++) {
		uint8_t code = rt->info[i].dot11Rate;

#if 0
		if (code >= 256) {
			fprintf(stderr, "error code %#x\n", code);
			exit(1);
		}
		if ((code | rt->info[i].shortPreamble) >= 256) {
			fprintf(stderr, "error code %#x\n", code | rt->info[i].shortPreamble);
			exit(1);
		}
#endif

		rt->rateCodeToIndex[code] = i;
		rt->rateCodeToIndex[code | rt->info[i].shortPreamble] = i;
		if (code & 0x80) {
			/*
			 * Map w/o basic rate bit too.
			 */
			code &= 0x7f;
			rt->rateCodeToIndex[code] = i;
			rt->rateCodeToIndex[code | rt->info[i].shortPreamble] = i;
		}
	}
#undef WLAN_CTRL_FRAME_SIZE
#undef N

	for (i = 0; i < 256; ++i) {
		if (i != 0 && i % 16 == 0)
			printf("\n");
		printf("%02x ", rt->rateCodeToIndex[i]);
	}
	printf("\n");

	exit(0);
}