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ath9k: update to DFS pattern detector interface 

Follow updates in DFS pattern detector interface:
a) use given pulse event structure
b) adapt to boolean return value of add_pulse()

Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Zefir Kurtisi 2012-04-03 17:15:51 +02:00 committed by John W. Linville
parent 8e92d3f242
commit 56dc389f76
2 changed files with 36 additions and 52 deletions
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80
drivers/net/wireless/ath/ath9k/dfs.c
View File

@ -21,17 +21,6 @@
#include "dfs.h"
#include "dfs_debug.h"
/*
* TODO: move into or synchronize this with generic header
* as soon as IF is defined
*/
struct dfs_radar_pulse {
u16 freq;
u64 ts;
u32 width;
u8 rssi;
};
/* internal struct to pass radar data */
struct ath_radar_data {
u8 pulse_bw_info;
@ -60,44 +49,44 @@ static u32 dur_to_usecs(struct ath_hw *ah, u32 dur)
#define EXT_CH_RADAR_FOUND 0x02
static bool
ath9k_postprocess_radar_event(struct ath_softc *sc,
struct ath_radar_data *are,
struct dfs_radar_pulse *drp)
struct ath_radar_data *ard,
struct pulse_event *pe)
{
u8 rssi;
u16 dur;
ath_dbg(ath9k_hw_common(sc->sc_ah), DFS,
"pulse_bw_info=0x%x, pri,ext len/rssi=(%u/%u, %u/%u)\n",
are->pulse_bw_info,
are->pulse_length_pri, are->rssi,
are->pulse_length_ext, are->ext_rssi);
ard->pulse_bw_info,
ard->pulse_length_pri, ard->rssi,
ard->pulse_length_ext, ard->ext_rssi);
/*
* Only the last 2 bits of the BW info are relevant, they indicate
* which channel the radar was detected in.
*/
are->pulse_bw_info &= 0x03;
ard->pulse_bw_info &= 0x03;
switch (are->pulse_bw_info) {
switch (ard->pulse_bw_info) {
case PRI_CH_RADAR_FOUND:
/* radar in ctrl channel */
dur = are->pulse_length_pri;
dur = ard->pulse_length_pri;
DFS_STAT_INC(sc, pri_phy_errors);
/*
* cannot use ctrl channel RSSI
* if extension channel is stronger
*/
rssi = (are->ext_rssi >= (are->rssi + 3)) ? 0 : are->rssi;
rssi = (ard->ext_rssi >= (ard->rssi + 3)) ? 0 : ard->rssi;
break;
case EXT_CH_RADAR_FOUND:
/* radar in extension channel */
dur = are->pulse_length_ext;
dur = ard->pulse_length_ext;
DFS_STAT_INC(sc, ext_phy_errors);
/*
* cannot use extension channel RSSI
* if control channel is stronger
*/
rssi = (are->rssi >= (are->ext_rssi + 12)) ? 0 : are->ext_rssi;
rssi = (ard->rssi >= (ard->ext_rssi + 12)) ? 0 : ard->ext_rssi;
break;
case (PRI_CH_RADAR_FOUND | EXT_CH_RADAR_FOUND):
/*
@ -107,14 +96,14 @@ ath9k_postprocess_radar_event(struct ath_softc *sc,
* Radiated testing, when pulse is on DC, different pri and
* ext durations are reported, so take the larger of the two
*/
if (are->pulse_length_ext >= are->pulse_length_pri)
dur = are->pulse_length_ext;
if (ard->pulse_length_ext >= ard->pulse_length_pri)
dur = ard->pulse_length_ext;
else
dur = are->pulse_length_pri;
dur = ard->pulse_length_pri;
DFS_STAT_INC(sc, dc_phy_errors);
/* when both are present use stronger one */
rssi = (are->rssi < are->ext_rssi) ? are->ext_rssi : are->rssi;
rssi = (ard->rssi < ard->ext_rssi) ? ard->ext_rssi : ard->rssi;
break;
default:
/*
@ -137,8 +126,8 @@ ath9k_postprocess_radar_event(struct ath_softc *sc,
*/
/* convert duration to usecs */
drp->width = dur_to_usecs(sc->sc_ah, dur);
drp->rssi = rssi;
pe->width = dur_to_usecs(sc->sc_ah, dur);
pe->rssi = rssi;
DFS_STAT_INC(sc, pulses_detected);
return true;
@ -155,12 +144,12 @@ void ath9k_dfs_process_phyerr(struct ath_softc *sc, void *data,
struct ath_radar_data ard;
u16 datalen;
char *vdata_end;
struct dfs_radar_pulse drp;
struct pulse_event pe;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
if ((!(rs->rs_phyerr != ATH9K_PHYERR_RADAR)) &&
(!(rs->rs_phyerr != ATH9K_PHYERR_FALSE_RADAR_EXT))) {
if ((rs->rs_phyerr != ATH9K_PHYERR_RADAR) &&
(rs->rs_phyerr != ATH9K_PHYERR_FALSE_RADAR_EXT)) {
ath_dbg(common, DFS,
"Error: rs_phyer=0x%x not a radar error\n",
rs->rs_phyerr);
@ -189,27 +178,20 @@ void ath9k_dfs_process_phyerr(struct ath_softc *sc, void *data,
ard.pulse_bw_info = vdata_end[-1];
ard.pulse_length_ext = vdata_end[-2];
ard.pulse_length_pri = vdata_end[-3];
ath_dbg(common, DFS,
"bw_info=%d, length_pri=%d, length_ext=%d, "
"rssi_pri=%d, rssi_ext=%d\n",
ard.pulse_bw_info, ard.pulse_length_pri, ard.pulse_length_ext,
ard.rssi, ard.ext_rssi);
drp.freq = ah->curchan->channel;
drp.ts = mactime;
if (ath9k_postprocess_radar_event(sc, &ard, &drp)) {
pe.freq = ah->curchan->channel;
pe.ts = mactime;
if (ath9k_postprocess_radar_event(sc, &ard, &pe)) {
struct dfs_pattern_detector *pd = sc->dfs_detector;
static u64 last_ts;
ath_dbg(common, DFS,
"ath9k_dfs_process_phyerr: channel=%d, ts=%llu, "
"width=%d, rssi=%d, delta_ts=%llu\n",
drp.freq, drp.ts, drp.width, drp.rssi, drp.ts-last_ts);
last_ts = drp.ts;
/*
* TODO: forward pulse to pattern detector
*
* ieee80211_add_radar_pulse(drp.freq, drp.ts,
* drp.width, drp.rssi);
*/
pe.freq, pe.ts, pe.width, pe.rssi, pe.ts-last_ts);
last_ts = pe.ts;
if (pd != NULL && pd->add_pulse(pd, &pe)) {
/*
* TODO: forward radar event to DFS management layer
*/
}
}
}

8
drivers/net/wireless/ath/ath9k/dfs.h
View File

@ -17,6 +17,7 @@
#ifndef ATH9K_DFS_H
#define ATH9K_DFS_H
#include "dfs_pattern_detector.h"
#if defined(CONFIG_ATH9K_DFS_CERTIFIED)
/**
@ -31,13 +32,14 @@
*
* The radar information provided as raw payload data is validated and
* filtered for false pulses. Events passing all tests are forwarded to
* the upper layer for pattern detection.
* the DFS detector for pattern detection.
*/
void ath9k_dfs_process_phyerr(struct ath_softc *sc, void *data,
struct ath_rx_status *rs, u64 mactime);
#else
static inline void ath9k_dfs_process_phyerr(struct ath_softc *sc, void *data,
struct ath_rx_status *rs, u64 mactime) { }
static inline void
ath9k_dfs_process_phyerr(struct ath_softc *sc, void *data,
struct ath_rx_status *rs, u64 mactime) { }
#endif
#endif /* ATH9K_DFS_H */