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ath5k: simplify MIB counters 

Let's keep MIB counter statistics in our own statistics structure and only
convert it to ieee80211_low_level_stats when needed by mac80211. Also we don't
need to read profile count registers in the MIB interrupt (they don't trigger
MIB interrupts).

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bruno Randolf 2010-03-25 14:49:36 +09:00 committed by John W. Linville
parent 9d332c82b4
commit 495391d715
4 changed files with 32 additions and 39 deletions
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3
drivers/net/wireless/ath/ath5k/ath5k.h
View File

@ -1173,8 +1173,7 @@ int ath5k_hw_update_tx_triglevel(struct ath5k_hw *ah, bool increase);
bool ath5k_hw_is_intr_pending(struct ath5k_hw *ah);
int ath5k_hw_get_isr(struct ath5k_hw *ah, enum ath5k_int *interrupt_mask);
enum ath5k_int ath5k_hw_set_imr(struct ath5k_hw *ah, enum ath5k_int new_mask);
void ath5k_hw_update_mib_counters(struct ath5k_hw *ah,
struct ieee80211_low_level_stats *stats);
void ath5k_hw_update_mib_counters(struct ath5k_hw *ah);
/* EEPROM access functions */
int ath5k_eeprom_init(struct ath5k_hw *ah);

16
drivers/net/wireless/ath/ath5k/base.c
View File

@ -2114,7 +2114,7 @@ ath5k_tx_processq(struct ath5k_softc *sc, struct ath5k_txq *txq)
info->status.rates[ts.ts_final_idx].count++;
if (unlikely(ts.ts_status)) {
sc->ll_stats.dot11ACKFailureCount++;
sc->stats.ack_fail++;
if (ts.ts_status & AR5K_TXERR_FILT) {
info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
sc->stats.txerr_filt++;
@ -2708,11 +2708,7 @@ ath5k_intr(int irq, void *dev_id)
/* TODO */
}
if (status & AR5K_INT_MIB) {
/*
* These stats are also used for ANI i think
* so how about updating them more often ?
*/
ath5k_hw_update_mib_counters(ah, &sc->ll_stats);
ath5k_hw_update_mib_counters(ah);
}
if (status & AR5K_INT_GPIO)
tasklet_schedule(&sc->rf_kill.toggleq);
@ -3234,12 +3230,14 @@ ath5k_get_stats(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats)
{
struct ath5k_softc *sc = hw->priv;
struct ath5k_hw *ah = sc->ah;
/* Force update */
ath5k_hw_update_mib_counters(ah, &sc->ll_stats);
ath5k_hw_update_mib_counters(sc->ah);
memcpy(stats, &sc->ll_stats, sizeof(sc->ll_stats));
stats->dot11ACKFailureCount = sc->stats.ack_fail;
stats->dot11RTSFailureCount = sc->stats.rts_fail;
stats->dot11RTSSuccessCount = sc->stats.rts_ok;
stats->dot11FCSErrorCount = sc->stats.fcs_error;
return 0;
}

13
drivers/net/wireless/ath/ath5k/base.h
View File

@ -105,10 +105,13 @@ struct ath5k_rfkill {
struct tasklet_struct toggleq;
};
/* statistics (only used for debugging now) */
/* statistics */
struct ath5k_statistics {
/* antenna use */
unsigned int antenna_rx[5]; /* frames count per antenna RX */
unsigned int antenna_tx[5]; /* frames count per antenna TX */
/* frame errors */
unsigned int rx_all_count; /* all RX frames, including errors */
unsigned int tx_all_count; /* all TX frames, including errors */
unsigned int rxerr_crc;
@ -121,6 +124,13 @@ struct ath5k_statistics {
unsigned int txerr_retry;
unsigned int txerr_fifo;
unsigned int txerr_filt;
/* MIB counters */
unsigned int ack_fail;
unsigned int rts_fail;
unsigned int rts_ok;
unsigned int fcs_error;
unsigned int beacons;
};
#if CHAN_DEBUG
@ -135,7 +145,6 @@ struct ath5k_softc {
struct pci_dev *pdev; /* for dma mapping */
void __iomem *iobase; /* address of the device */
struct mutex lock; /* dev-level lock */
struct ieee80211_low_level_stats ll_stats;
struct ieee80211_hw *hw; /* IEEE 802.11 common */
struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
struct ieee80211_channel channels[ATH_CHAN_MAX];

39
drivers/net/wireless/ath/ath5k/pcu.c
View File

@ -113,39 +113,26 @@ int ath5k_hw_set_opmode(struct ath5k_hw *ah, enum nl80211_iftype op_mode)
}
/**
* ath5k_hw_update - Update mib counters (mac layer statistics)
* ath5k_hw_update - Update MIB counters (mac layer statistics)
*
* @ah: The &struct ath5k_hw
* @stats: The &struct ieee80211_low_level_stats we use to track
* statistics on the driver
*
* Reads MIB counters from PCU and updates sw statistics. Must be
* called after a MIB interrupt.
* Reads MIB counters from PCU and updates sw statistics. Is called after a
* MIB interrupt, because one of these counters might have reached their maximum
* and triggered the MIB interrupt, to let us read and clear the counter.
*
* Is called in interrupt context!
*/
void ath5k_hw_update_mib_counters(struct ath5k_hw *ah,
struct ieee80211_low_level_stats *stats)
void ath5k_hw_update_mib_counters(struct ath5k_hw *ah)
{
ATH5K_TRACE(ah->ah_sc);
struct ath5k_statistics *stats = &ah->ah_sc->stats;
/* Read-And-Clear */
stats->dot11ACKFailureCount += ath5k_hw_reg_read(ah, AR5K_ACK_FAIL);
stats->dot11RTSFailureCount += ath5k_hw_reg_read(ah, AR5K_RTS_FAIL);
stats->dot11RTSSuccessCount += ath5k_hw_reg_read(ah, AR5K_RTS_OK);
stats->dot11FCSErrorCount += ath5k_hw_reg_read(ah, AR5K_FCS_FAIL);
/* XXX: Should we use this to track beacon count ?
* -we read it anyway to clear the register */
ath5k_hw_reg_read(ah, AR5K_BEACON_CNT);
/* Reset profile count registers on 5212*/
if (ah->ah_version == AR5K_AR5212) {
ath5k_hw_reg_write(ah, 0, AR5K_PROFCNT_TX);
ath5k_hw_reg_write(ah, 0, AR5K_PROFCNT_RX);
ath5k_hw_reg_write(ah, 0, AR5K_PROFCNT_RXCLR);
ath5k_hw_reg_write(ah, 0, AR5K_PROFCNT_CYCLE);
}
/* TODO: Handle ANI stats */
stats->ack_fail += ath5k_hw_reg_read(ah, AR5K_ACK_FAIL);
stats->rts_fail += ath5k_hw_reg_read(ah, AR5K_RTS_FAIL);
stats->rts_ok += ath5k_hw_reg_read(ah, AR5K_RTS_OK);
stats->fcs_error += ath5k_hw_reg_read(ah, AR5K_FCS_FAIL);
stats->beacons += ath5k_hw_reg_read(ah, AR5K_BEACON_CNT);
}
/**