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Differential D3442 Diff 8340 head/tools/tools/net80211/wlantxtime/wlantxtime.c

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head/tools/tools/net80211/wlantxtime/wlantxtime.c

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#include <sys/cdefs.h> #include <sys/cdefs.h>
__FBSDID("$FreeBSD$"); __FBSDID("$FreeBSD$");
/* /*
* IEEE 802.11 PHY-related support. * IEEE 802.11 PHY-related support.
*/ */
#include <sys/param.h> #include <sys/param.h>
#include <sys/types.h>
#include <net/if_llc.h> #include <net/if_llc.h>
#include <net80211/_ieee80211.h> #include <net80211/_ieee80211.h>
#include <net80211/ieee80211.h> #include <net80211/ieee80211.h>
#define IEEE80211_F_SHPREAMBLE 0x00040000 /* STATUS: use short preamble */ #define IEEE80211_F_SHPREAMBLE 0x00040000 /* STATUS: use short preamble */
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* We use this as a key that indicates whether or not * We use this as a key that indicates whether or not
* we've previously setup the reverse lookup table. * we've previously setup the reverse lookup table.
* *
* XXX not reentrant, but shouldn't matter * XXX not reentrant, but shouldn't matter
*/ */
static void static void
ieee80211_setup_ratetable(struct ieee80211_rate_table *rt) ieee80211_setup_ratetable(struct ieee80211_rate_table *rt)
{ {
#define N(a) (sizeof(a)/sizeof(a[0]))
#define WLAN_CTRL_FRAME_SIZE \ #define WLAN_CTRL_FRAME_SIZE \
(sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN) (sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN)
int i; int i;
for (i = 0; i < N(rt->rateCodeToIndex); i++) for (i = 0; i < nitems(rt->rateCodeToIndex); i++)
rt->rateCodeToIndex[i] = (uint8_t) -1; rt->rateCodeToIndex[i] = (uint8_t) -1;
for (i = 0; i < rt->rateCount; i++) { for (i = 0; i < rt->rateCount; i++) {
uint8_t code = rt->info[i].dot11Rate; uint8_t code = rt->info[i].dot11Rate;
uint8_t cix = rt->info[i].ctlRateIndex; uint8_t cix = rt->info[i].ctlRateIndex;
uint8_t ctl_rate = rt->info[cix].dot11Rate; uint8_t ctl_rate = rt->info[cix].dot11Rate;
rt->rateCodeToIndex[code] = i; rt->rateCodeToIndex[code] = i;
if (code & IEEE80211_RATE_BASIC) { if (code & IEEE80211_RATE_BASIC) {
Show All 16 Lines for (i = 0; i < rt->rateCount; i++) {
*/ */
rt->info[i].lpAckDuration = ieee80211_compute_duration(rt, rt->info[i].lpAckDuration = ieee80211_compute_duration(rt,
WLAN_CTRL_FRAME_SIZE, ctl_rate, 0); WLAN_CTRL_FRAME_SIZE, ctl_rate, 0);
rt->info[i].spAckDuration = ieee80211_compute_duration(rt, rt->info[i].spAckDuration = ieee80211_compute_duration(rt,
WLAN_CTRL_FRAME_SIZE, ctl_rate, IEEE80211_F_SHPREAMBLE); WLAN_CTRL_FRAME_SIZE, ctl_rate, IEEE80211_F_SHPREAMBLE);
} }
#undef WLAN_CTRL_FRAME_SIZE #undef WLAN_CTRL_FRAME_SIZE
#undef N
} }
/* Setup all rate tables */ /* Setup all rate tables */
static void static void
ieee80211_phy_init(void) ieee80211_phy_init(void)
{ {
#define N(arr) (int)(sizeof(arr) / sizeof(arr[0]))
static struct ieee80211_rate_table * const ratetables[] = { static struct ieee80211_rate_table * const ratetables[] = {
&ieee80211_half_table, &ieee80211_half_table,
&ieee80211_quarter_table, &ieee80211_quarter_table,
&ieee80211_11a_table, &ieee80211_11a_table,
&ieee80211_11g_table, &ieee80211_11g_table,
&ieee80211_turbog_table, &ieee80211_turbog_table,
&ieee80211_turboa_table, &ieee80211_turboa_table,
&ieee80211_turboa_table, &ieee80211_turboa_table,
&ieee80211_11a_table, &ieee80211_11a_table,
&ieee80211_11g_table, &ieee80211_11g_table,
&ieee80211_11b_table &ieee80211_11b_table
}; };
int i; unsigned int i;
for (i = 0; i < N(ratetables); ++i) for (i = 0; i < nitems(ratetables); ++i)
ieee80211_setup_ratetable(ratetables[i]); ieee80211_setup_ratetable(ratetables[i]);
#undef N
} }
#define CCK_SIFS_TIME 10 #define CCK_SIFS_TIME 10
#define CCK_PREAMBLE_BITS 144 #define CCK_PREAMBLE_BITS 144
#define CCK_PLCP_BITS 48 #define CCK_PLCP_BITS 48
#define OFDM_SIFS_TIME 16 #define OFDM_SIFS_TIME 16
#define OFDM_PREAMBLE_TIME 20 #define OFDM_PREAMBLE_TIME 20
#define OFDM_PLCP_BITS 22 #define OFDM_PLCP_BITS 22
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