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path: root/drivers/net/wireless/ath9k/beacon.c
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Diffstat (limited to 'drivers/net/wireless/ath9k/beacon.c')
-rw-r--r--drivers/net/wireless/ath9k/beacon.c177
1 files changed, 53 insertions, 124 deletions
diff --git a/drivers/net/wireless/ath9k/beacon.c b/drivers/net/wireless/ath9k/beacon.c
index 18bda362d3a..c3044891a93 100644
--- a/drivers/net/wireless/ath9k/beacon.c
+++ b/drivers/net/wireless/ath9k/beacon.c
@@ -44,15 +44,14 @@ static int ath_beaconq_config(struct ath_softc *sc)
"unable to update h/w beacon queue parameters\n");
return 0;
} else {
- ath9k_hw_resettxqueue(ah, sc->beacon.beaconq); /* push to h/w */
+ ath9k_hw_resettxqueue(ah, sc->beacon.beaconq);
return 1;
}
}
static void ath_bstuck_process(struct ath_softc *sc)
{
- DPRINTF(sc, ATH_DBG_BEACON,
- "stuck beacon; resetting (bmiss count %u)\n",
+ DPRINTF(sc, ATH_DBG_BEACON, "stuck beacon; resetting (bmiss count %u)\n",
sc->beacon.bmisscnt);
ath_reset(sc, false);
}
@@ -62,24 +61,18 @@ static void ath_bstuck_process(struct ath_softc *sc)
* up all required antenna switch parameters, rate codes, and channel flags.
* Beacons are always sent out at the lowest rate, and are not retried.
*/
-static void ath_beacon_setup(struct ath_softc *sc,
- struct ath_vif *avp, struct ath_buf *bf)
+static void ath_beacon_setup(struct ath_softc *sc, struct ath_vif *avp,
+ struct ath_buf *bf)
{
struct sk_buff *skb = (struct sk_buff *)bf->bf_mpdu;
struct ath_hw *ah = sc->sc_ah;
struct ath_desc *ds;
struct ath9k_11n_rate_series series[4];
struct ath_rate_table *rt;
- int flags, antenna;
- u8 rix, rate;
- int ctsrate = 0;
- int ctsduration = 0;
-
- DPRINTF(sc, ATH_DBG_BEACON, "m %p len %u\n", skb, skb->len);
+ int flags, antenna, ctsrate = 0, ctsduration = 0;
+ u8 rate;
- /* setup descriptors */
ds = bf->bf_desc;
-
flags = ATH9K_TXDESC_NOACK;
if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC &&
@@ -92,53 +85,39 @@ static void ath_beacon_setup(struct ath_softc *sc,
ds->ds_link = 0;
/*
* Switch antenna every beacon.
- * Should only switch every beacon period, not for every
- * SWBA's
- * XXX assumes two antenna
+ * Should only switch every beacon period, not for every SWBA
+ * XXX assumes two antennae
*/
antenna = ((sc->beacon.ast_be_xmit / sc->nbcnvifs) & 1 ? 2 : 1);
}
ds->ds_data = bf->bf_buf_addr;
- /*
- * Calculate rate code.
- * XXX everything at min xmit rate
- */
- rix = 0;
rt = sc->cur_rate_table;
- rate = rt->info[rix].ratecode;
+ rate = rt->info[0].ratecode;
if (sc->sc_flags & SC_OP_PREAMBLE_SHORT)
- rate |= rt->info[rix].short_preamble;
-
- ath9k_hw_set11n_txdesc(ah, ds,
- skb->len + FCS_LEN, /* frame length */
- ATH9K_PKT_TYPE_BEACON, /* Atheros packet type */
- MAX_RATE_POWER, /* FIXME */
- ATH9K_TXKEYIX_INVALID, /* no encryption */
- ATH9K_KEY_TYPE_CLEAR, /* no encryption */
- flags /* no ack,
- veol for beacons */
- );
+ rate |= rt->info[0].short_preamble;
+
+ ath9k_hw_set11n_txdesc(ah, ds, skb->len + FCS_LEN,
+ ATH9K_PKT_TYPE_BEACON,
+ MAX_RATE_POWER,
+ ATH9K_TXKEYIX_INVALID,
+ ATH9K_KEY_TYPE_CLEAR,
+ flags);
/* NB: beacon's BufLen must be a multiple of 4 bytes */
- ath9k_hw_filltxdesc(ah, ds,
- roundup(skb->len, 4), /* buffer length */
- true, /* first segment */
- true, /* last segment */
- ds /* first descriptor */
- );
+ ath9k_hw_filltxdesc(ah, ds, roundup(skb->len, 4),
+ true, true, ds);
memset(series, 0, sizeof(struct ath9k_11n_rate_series) * 4);
series[0].Tries = 1;
series[0].Rate = rate;
series[0].ChSel = sc->tx_chainmask;
series[0].RateFlags = (ctsrate) ? ATH9K_RATESERIES_RTS_CTS : 0;
- ath9k_hw_set11n_ratescenario(ah, ds, ds, 0,
- ctsrate, ctsduration, series, 4, 0);
+ ath9k_hw_set11n_ratescenario(ah, ds, ds, 0, ctsrate, ctsduration,
+ series, 4, 0);
}
-/* Generate beacon frame and queue cab data for a VIF */
static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
{
struct ath_buf *bf;
@@ -150,8 +129,6 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
int cabq_depth;
vif = sc->vifs[if_id];
- ASSERT(vif);
-
avp = (void *)vif->drv_priv;
cabq = sc->beacon.cabq;
@@ -161,15 +138,18 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
return NULL;
}
+ /* Release the old beacon first */
+
bf = avp->av_bcbuf;
skb = (struct sk_buff *)bf->bf_mpdu;
if (skb) {
dma_unmap_single(sc->dev, bf->bf_dmacontext,
- skb->len,
- DMA_TO_DEVICE);
+ skb->len, DMA_TO_DEVICE);
dev_kfree_skb_any(skb);
}
+ /* Get a new beacon from mac80211 */
+
skb = ieee80211_beacon_get(sc->hw, vif);
bf->bf_mpdu = skb;
if (skb == NULL)
@@ -189,13 +169,11 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
bf->bf_buf_addr = bf->bf_dmacontext =
dma_map_single(sc->dev, skb->data,
- skb->len,
- DMA_TO_DEVICE);
+ skb->len, DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
- DPRINTF(sc, ATH_DBG_CONFIG,
- "dma_mapping_error() on beaconing\n");
+ DPRINTF(sc, ATH_DBG_FATAL, "dma_mapping_error on beaconing\n");
return NULL;
}
@@ -214,25 +192,15 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
spin_unlock_bh(&cabq->axq_lock);
if (skb && cabq_depth) {
- /*
- * Unlock the cabq lock as ath_tx_draintxq acquires
- * the lock again which is a common function and that
- * acquires txq lock inside.
- */
if (sc->nvifs > 1) {
- ath_draintxq(sc, cabq, false);
DPRINTF(sc, ATH_DBG_BEACON,
- "flush previous cabq traffic\n");
+ "Flushing previous cabq traffic\n");
+ ath_draintxq(sc, cabq, false);
}
}
- /* Construct tx descriptor. */
ath_beacon_setup(sc, avp, bf);
- /*
- * Enable the CAB queue before the beacon queue to
- * insure cab frames are triggered by this beacon.
- */
while (skb) {
ath_tx_cabq(sc, skb);
skb = ieee80211_get_buffered_bc(sc->hw, vif);
@@ -254,19 +222,14 @@ static void ath_beacon_start_adhoc(struct ath_softc *sc, int if_id)
struct sk_buff *skb;
vif = sc->vifs[if_id];
- ASSERT(vif);
-
avp = (void *)vif->drv_priv;
- if (avp->av_bcbuf == NULL) {
- DPRINTF(sc, ATH_DBG_BEACON, "avp=%p av_bcbuf=%p\n",
- avp, avp != NULL ? avp->av_bcbuf : NULL);
+ if (avp->av_bcbuf == NULL)
return;
- }
+
bf = avp->av_bcbuf;
skb = (struct sk_buff *) bf->bf_mpdu;
- /* Construct tx descriptor. */
ath_beacon_setup(sc, avp, bf);
/* NB: caller is known to have already stopped tx dma */
@@ -298,8 +261,6 @@ int ath_beacon_alloc(struct ath_softc *sc, int if_id)
__le64 tstamp;
vif = sc->vifs[if_id];
- ASSERT(vif);
-
avp = (void *)vif->drv_priv;
/* Allocate a beacon descriptor if we haven't done so. */
@@ -339,22 +300,17 @@ int ath_beacon_alloc(struct ath_softc *sc, int if_id)
}
}
- /* release the previous beacon frame , if it already exists. */
+ /* release the previous beacon frame, if it already exists. */
bf = avp->av_bcbuf;
if (bf->bf_mpdu != NULL) {
skb = (struct sk_buff *)bf->bf_mpdu;
dma_unmap_single(sc->dev, bf->bf_dmacontext,
- skb->len,
- DMA_TO_DEVICE);
+ skb->len, DMA_TO_DEVICE);
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
}
- /*
- * NB: the beacon data buffer must be 32-bit aligned.
- * FIXME: Fill avp->av_btxctl.txpower and
- * avp->av_btxctl.shortPreamble
- */
+ /* NB: the beacon data buffer must be 32-bit aligned. */
skb = ieee80211_beacon_get(sc->hw, vif);
if (skb == NULL) {
DPRINTF(sc, ATH_DBG_BEACON, "cannot get skb\n");
@@ -403,13 +359,12 @@ int ath_beacon_alloc(struct ath_softc *sc, int if_id)
bf->bf_mpdu = skb;
bf->bf_buf_addr = bf->bf_dmacontext =
dma_map_single(sc->dev, skb->data,
- skb->len,
- DMA_TO_DEVICE);
+ skb->len, DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
- DPRINTF(sc, ATH_DBG_CONFIG,
- "dma_mapping_error() on beacon alloc\n");
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "dma_mapping_error on beacon alloc\n");
return -ENOMEM;
}
@@ -430,8 +385,7 @@ void ath_beacon_return(struct ath_softc *sc, struct ath_vif *avp)
if (bf->bf_mpdu != NULL) {
struct sk_buff *skb = (struct sk_buff *)bf->bf_mpdu;
dma_unmap_single(sc->dev, bf->bf_dmacontext,
- skb->len,
- DMA_TO_DEVICE);
+ skb->len, DMA_TO_DEVICE);
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
}
@@ -441,18 +395,15 @@ void ath_beacon_return(struct ath_softc *sc, struct ath_vif *avp)
}
}
-void ath9k_beacon_tasklet(unsigned long data)
+void ath_beacon_tasklet(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
struct ath_hw *ah = sc->sc_ah;
struct ath_buf *bf = NULL;
int slot, if_id;
- u32 bfaddr;
+ u32 bfaddr, show_cycles = 0, bc = 0, tsftu;
u32 rx_clear = 0, rx_frame = 0, tx_frame = 0;
- u32 show_cycles = 0;
- u32 bc = 0; /* beacon count */
u64 tsf;
- u32 tsftu;
u16 intval;
if (sc->sc_flags & SC_OP_NO_RESET) {
@@ -627,7 +578,6 @@ void ath_beacon_config(struct ath_softc *sc, int if_id)
if (if_id != ATH_IF_ID_ANY) {
vif = sc->vifs[if_id];
- ASSERT(vif);
avp = (void *)vif->drv_priv;
opmode = avp->av_opmode;
} else {
@@ -757,30 +707,11 @@ void ath_beacon_config(struct ath_softc *sc, int if_id)
bs.bs_tsfoor_threshold = ATH9K_TSFOOR_THRESHOLD;
DPRINTF(sc, ATH_DBG_BEACON,
- "tsf %llu "
- "tsf:tu %u "
- "intval %u "
- "nexttbtt %u "
- "dtim %u "
- "nextdtim %u "
- "bmiss %u "
- "sleep %u "
- "cfp:period %u "
- "maxdur %u "
- "next %u "
- "timoffset %u\n",
- (unsigned long long)tsf, tsftu,
- bs.bs_intval,
- bs.bs_nexttbtt,
- bs.bs_dtimperiod,
- bs.bs_nextdtim,
- bs.bs_bmissthreshold,
- bs.bs_sleepduration,
- bs.bs_cfpperiod,
- bs.bs_cfpmaxduration,
- bs.bs_cfpnext,
- bs.bs_timoffset
- );
+ "tsf: %llu tsftu: %u\n", tsf, tsftu);
+ DPRINTF(sc, ATH_DBG_BEACON,
+ "bmiss: %u sleep: %u cfp-period: %u maxdur: %u next: %u\n",
+ bs.bs_bmissthreshold, bs.bs_sleepduration,
+ bs.bs_cfpperiod, bs.bs_cfpmaxduration, bs.bs_cfpnext);
ath9k_hw_set_interrupts(ah, 0);
ath9k_hw_set_sta_beacon_timers(ah, &bs);
@@ -789,17 +720,15 @@ void ath_beacon_config(struct ath_softc *sc, int if_id)
} else {
u64 tsf;
u32 tsftu;
+
ath9k_hw_set_interrupts(ah, 0);
if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) {
- /*
- * Pull nexttbtt forward to reflect the current
- * TSF
- */
+ /* Pull nexttbtt forward to reflect the current TSF */
#define FUDGE 2
if (!(intval & ATH9K_BEACON_RESET_TSF)) {
tsf = ath9k_hw_gettsf64(ah);
tsftu = TSF_TO_TU((u32)(tsf>>32),
- (u32)tsf) + FUDGE;
+ (u32)tsf) + FUDGE;
do {
nexttbtt += intval;
} while (nexttbtt < tsftu);
@@ -807,8 +736,7 @@ void ath_beacon_config(struct ath_softc *sc, int if_id)
#undef FUDGE
DPRINTF(sc, ATH_DBG_BEACON,
"IBSS nexttbtt %u intval %u (%u)\n",
- nexttbtt,
- intval & ~ATH9K_BEACON_RESET_TSF,
+ nexttbtt, intval & ~ATH9K_BEACON_RESET_TSF,
conf.beacon_interval);
/*
@@ -825,18 +753,19 @@ void ath_beacon_config(struct ath_softc *sc, int if_id)
} else if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
if (nexttbtt == intval)
intval |= ATH9K_BEACON_RESET_TSF;
-
/*
* In AP mode we enable the beacon timers and
* SWBA interrupts to prepare beacon frames.
*/
intval |= ATH9K_BEACON_ENA;
- sc->imask |= ATH9K_INT_SWBA; /* beacon prepare */
+ sc->imask |= ATH9K_INT_SWBA;
ath_beaconq_config(sc);
}
+
ath9k_hw_beaconinit(ah, nexttbtt, intval);
sc->beacon.bmisscnt = 0;
ath9k_hw_set_interrupts(ah, sc->imask);
+
/*
* When using a self-linked beacon descriptor in
* ibss mode load it once here.
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 02:51:14 +0000