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yaml
---
r: 134861
b: refs/heads/master
c: acf3c1a
h: refs/heads/master
i:
  134859: 4c4410b
v: v3
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Bob Copeland authored and John W. Linville committed Feb 27, 2009
1 parent c1cc022 commit e228d84
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Showing 3 changed files with 37 additions and 30 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: b5f03956c56d72ad336e5c2c42a025f25d952c30
refs/heads/master: acf3c1a592a070edeede5dfa38c0ce3395357de0
64 changes: 35 additions & 29 deletions trunk/drivers/net/wireless/ath5k/base.c
Original file line number Diff line number Diff line change
Expand Up @@ -350,6 +350,7 @@ static int ath5k_beacon_setup(struct ath5k_softc *sc,
static void ath5k_beacon_send(struct ath5k_softc *sc);
static void ath5k_beacon_config(struct ath5k_softc *sc);
static void ath5k_beacon_update_timers(struct ath5k_softc *sc, u64 bc_tsf);
static void ath5k_tasklet_beacon(unsigned long data);

static inline u64 ath5k_extend_tsf(struct ath5k_hw *ah, u32 rstamp)
{
Expand Down Expand Up @@ -789,6 +790,7 @@ ath5k_attach(struct pci_dev *pdev, struct ieee80211_hw *hw)
tasklet_init(&sc->rxtq, ath5k_tasklet_rx, (unsigned long)sc);
tasklet_init(&sc->txtq, ath5k_tasklet_tx, (unsigned long)sc);
tasklet_init(&sc->restq, ath5k_tasklet_reset, (unsigned long)sc);
tasklet_init(&sc->beacontq, ath5k_tasklet_beacon, (unsigned long)sc);
setup_timer(&sc->calib_tim, ath5k_calibrate, (unsigned long)sc);

ret = ath5k_eeprom_read_mac(ah, mac);
Expand Down Expand Up @@ -1700,6 +1702,35 @@ ath5k_check_ibss_tsf(struct ath5k_softc *sc, struct sk_buff *skb,
}
}

static void ath5k_tasklet_beacon(unsigned long data)
{
struct ath5k_softc *sc = (struct ath5k_softc *) data;

/*
* Software beacon alert--time to send a beacon.
*
* In IBSS mode we use this interrupt just to
* keep track of the next TBTT (target beacon
* transmission time) in order to detect wether
* automatic TSF updates happened.
*/
if (sc->opmode == NL80211_IFTYPE_ADHOC) {
/* XXX: only if VEOL suppported */
u64 tsf = ath5k_hw_get_tsf64(sc->ah);
sc->nexttbtt += sc->bintval;
ATH5K_DBG(sc, ATH5K_DEBUG_BEACON,
"SWBA nexttbtt: %x hw_tu: %x "
"TSF: %llx\n",
sc->nexttbtt,
TSF_TO_TU(tsf),
(unsigned long long) tsf);
} else {
spin_lock(&sc->block);
ath5k_beacon_send(sc);
spin_unlock(&sc->block);
}
}

static void
ath5k_tasklet_rx(unsigned long data)
{
Expand Down Expand Up @@ -2039,9 +2070,8 @@ ath5k_beacon_setup(struct ath5k_softc *sc, struct ath5k_buf *bf)
* frame contents are done as needed and the slot time is
* also adjusted based on current state.
*
* this is usually called from interrupt context (ath5k_intr())
* but also from ath5k_beacon_config() in IBSS mode which in turn
* can be called from a tasklet and user context
* This is called from software irq context (beacontq or restq
* tasklets) or user context from ath5k_beacon_config.
*/
static void
ath5k_beacon_send(struct ath5k_softc *sc)
Expand Down Expand Up @@ -2391,6 +2421,7 @@ ath5k_stop_hw(struct ath5k_softc *sc)
tasklet_kill(&sc->rxtq);
tasklet_kill(&sc->txtq);
tasklet_kill(&sc->restq);
tasklet_kill(&sc->beacontq);

return ret;
}
Expand Down Expand Up @@ -2421,32 +2452,7 @@ ath5k_intr(int irq, void *dev_id)
tasklet_schedule(&sc->restq);
} else {
if (status & AR5K_INT_SWBA) {
/*
* Software beacon alert--time to send a beacon.
* Handle beacon transmission directly; deferring
* this is too slow to meet timing constraints
* under load.
*
* In IBSS mode we use this interrupt just to
* keep track of the next TBTT (target beacon
* transmission time) in order to detect wether
* automatic TSF updates happened.
*/
if (sc->opmode == NL80211_IFTYPE_ADHOC) {
/* XXX: only if VEOL suppported */
u64 tsf = ath5k_hw_get_tsf64(ah);
sc->nexttbtt += sc->bintval;
ATH5K_DBG(sc, ATH5K_DEBUG_BEACON,
"SWBA nexttbtt: %x hw_tu: %x "
"TSF: %llx\n",
sc->nexttbtt,
TSF_TO_TU(tsf),
(unsigned long long) tsf);
} else {
spin_lock(&sc->block);
ath5k_beacon_send(sc);
spin_unlock(&sc->block);
}
tasklet_schedule(&sc->beacontq);
}
if (status & AR5K_INT_RXEOL) {
/*
Expand Down
1 change: 1 addition & 0 deletions trunk/drivers/net/wireless/ath5k/base.h
Original file line number Diff line number Diff line change
Expand Up @@ -169,6 +169,7 @@ struct ath5k_softc {
struct ath5k_led tx_led; /* tx led */

spinlock_t block; /* protects beacon */
struct tasklet_struct beacontq; /* beacon intr tasklet */
struct ath5k_buf *bbuf; /* beacon buffer */
unsigned int bhalq, /* SW q for outgoing beacons */
bmisscount, /* missed beacon transmits */
Expand Down

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