Remove unused variables, use a helper function to choose
the slot and reset beaconing status at one place.
Signed-off-by: Sujith Manoharan <c_manoha@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ath9k.h | 3 +-
drivers/net/wireless/ath/ath9k/beacon.c | 126 ++++++++++++++++----------------
drivers/net/wireless/ath/ath9k/init.c | 2 +-
3 files changed, 63 insertions(+), 68 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 7e4839a..bb86e1b 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -398,7 +398,6 @@ struct ath_beacon {
u32 beaconq;
u32 bmisscnt;
- u32 ast_be_xmit;
u32 bc_tstamp;
struct ieee80211_vif *bslot[ATH_BCBUF];
int slottime;
@@ -412,7 +411,7 @@ struct ath_beacon {
bool tx_last;
};
-void ath_beacon_tasklet(unsigned long data);
+void ath9k_beacon_tasklet(unsigned long data);
bool ath9k_allow_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif);
void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
u32 changed);
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index f2a2131..006ae99d 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -68,7 +68,7 @@ static void ath9k_beaconq_config(struct ath_softc *sc)
* up 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 ieee80211_vif *vif,
+static void ath9k_beacon_setup(struct ath_softc *sc, struct ieee80211_vif *vif,
struct ath_buf *bf, int rateidx)
{
struct sk_buff *skb = bf->bf_mpdu;
@@ -79,8 +79,6 @@ static void ath_beacon_setup(struct ath_softc *sc, struct ieee80211_vif *vif,
u8 chainmask = ah->txchainmask;
u8 rate = 0;
- ath9k_reset_beacon_status(sc);
-
sband = &sc->sbands[common->hw->conf.channel->band];
rate = sband->bitrates[rateidx].hw_value;
if (vif->bss_conf.use_short_preamble)
@@ -109,7 +107,7 @@ static void ath_beacon_setup(struct ath_softc *sc, struct ieee80211_vif *vif,
ath9k_hw_set_txdesc(ah, bf->bf_desc, &info);
}
-static void ath_tx_cabq(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void ath9k_tx_cabq(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct ath_softc *sc = hw->priv;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
@@ -126,8 +124,8 @@ static void ath_tx_cabq(struct ieee80211_hw *hw, struct sk_buff *skb)
}
}
-static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
+static struct ath_buf *ath9k_beacon_generate(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
{
struct ath_softc *sc = hw->priv;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
@@ -136,15 +134,12 @@ static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
struct sk_buff *skb;
struct ath_txq *cabq = sc->beacon.cabq;
struct ieee80211_tx_info *info;
+ struct ieee80211_mgmt *mgmt_hdr;
int cabq_depth;
if (avp->av_bcbuf == NULL)
return NULL;
- ath9k_reset_beacon_status(sc);
-
- /* Release the old beacon first */
-
bf = avp->av_bcbuf;
skb = bf->bf_mpdu;
if (skb) {
@@ -154,14 +149,14 @@ static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
bf->bf_buf_addr = 0;
}
- /* Get a new beacon from mac80211 */
-
skb = ieee80211_beacon_get(hw, vif);
- bf->bf_mpdu = skb;
if (skb == NULL)
return NULL;
- ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp =
- avp->tsf_adjust;
+
+ bf->bf_mpdu = skb;
+
+ mgmt_hdr = (struct ieee80211_mgmt *)skb->data;
+ mgmt_hdr->u.beacon.timestamp = avp->tsf_adjust;
info = IEEE80211_SKB_CB(skb);
if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
@@ -207,10 +202,10 @@ static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
}
}
- ath_beacon_setup(sc, vif, bf, info->control.rates[0].idx);
+ ath9k_beacon_setup(sc, vif, bf, info->control.rates[0].idx);
while (skb) {
- ath_tx_cabq(hw, skb);
+ ath9k_tx_cabq(hw, skb);
skb = ieee80211_get_buffered_bc(hw, vif);
}
@@ -268,6 +263,33 @@ void ath9k_beacon_remove_slot(struct ath_softc *sc, struct ieee80211_vif *vif)
tasklet_enable(&sc->bcon_tasklet);
}
+static int ath9k_beacon_choose_slot(struct ath_softc *sc)
+{
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
+ u16 intval;
+ u32 tsftu;
+ u64 tsf;
+ int slot;
+
+ if (sc->sc_ah->opmode != NL80211_IFTYPE_AP) {
+ ath_dbg(common, BEACON, "slot 0, tsf: %llu\n",
+ ath9k_hw_gettsf64(sc->sc_ah));
+ return 0;
+ }
+
+ intval = cur_conf->beacon_interval ? : ATH_DEFAULT_BINTVAL;
+ tsf = ath9k_hw_gettsf64(sc->sc_ah);
+ tsf += TU_TO_USEC(sc->sc_ah->config.sw_beacon_response_time);
+ tsftu = TSF_TO_TU((tsf * ATH_BCBUF) >>32, tsf * ATH_BCBUF);
+ slot = (tsftu % (intval * ATH_BCBUF)) / intval;
+
+ ath_dbg(common, BEACON, "slot: %d tsf: %llu tsftu: %u\n",
+ slot, tsf, tsftu / ATH_BCBUF);
+
+ return slot;
+}
+
void ath9k_set_tsfadjust(struct ath_softc *sc, struct ieee80211_vif *vif)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
@@ -285,17 +307,15 @@ void ath9k_set_tsfadjust(struct ath_softc *sc, struct ieee80211_vif *vif)
(unsigned long long)tsfadjust, avp->av_bslot);
}
-void ath_beacon_tasklet(unsigned long data)
+void ath9k_beacon_tasklet(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
- struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ath_buf *bf = NULL;
struct ieee80211_vif *vif;
bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
int slot;
- u32 bfaddr, bc = 0;
if (work_pending(&sc->hw_reset_work)) {
ath_dbg(common, RESET,
@@ -331,48 +351,19 @@ void ath_beacon_tasklet(unsigned long data)
return;
}
- /*
- * Generate beacon frames. we are sending frames
- * staggered so calculate the slot for this frame based
- * on the tsf to safeguard against missing an swba.
- */
-
+ slot = ath9k_beacon_choose_slot(sc);
+ vif = sc->beacon.bslot[slot];
- if (ah->opmode == NL80211_IFTYPE_AP) {
- u16 intval;
- u32 tsftu;
- u64 tsf;
+ if (!vif || !vif->bss_conf.enable_beacon)
+ return;
- intval = cur_conf->beacon_interval ? : ATH_DEFAULT_BINTVAL;
- tsf = ath9k_hw_gettsf64(ah);
- tsf += TU_TO_USEC(ah->config.sw_beacon_response_time);
- tsftu = TSF_TO_TU((tsf * ATH_BCBUF) >>32, tsf * ATH_BCBUF);
- slot = (tsftu % (intval * ATH_BCBUF)) / intval;
- vif = sc->beacon.bslot[slot];
+ bf = ath9k_beacon_generate(sc->hw, vif);
+ WARN_ON(!bf);
- ath_dbg(common, BEACON,
- "slot %d [tsf %llu tsftu %u intval %u] vif %p\n",
- slot, tsf, tsftu / ATH_BCBUF, intval, vif);
- } else {
- slot = 0;
- vif = sc->beacon.bslot[slot];
- }
-
-
- bfaddr = 0;
- if (vif) {
- bf = ath_beacon_generate(sc->hw, vif);
- if (bf != NULL) {
- bfaddr = bf->bf_daddr;
- bc = 1;
- }
-
- if (sc->beacon.bmisscnt != 0) {
- ath_dbg(common, BSTUCK,
- "resume beacon xmit after %u misses\n",
- sc->beacon.bmisscnt);
- sc->beacon.bmisscnt = 0;
- }
+ if (sc->beacon.bmisscnt != 0) {
+ ath_dbg(common, BSTUCK, "resume beacon xmit after %u misses\n",
+ sc->beacon.bmisscnt);
+ sc->beacon.bmisscnt = 0;
}
/*
@@ -392,21 +383,26 @@ void ath_beacon_tasklet(unsigned long data)
* set to ATH_BCBUF so this check is a noop.
*/
if (sc->beacon.updateslot == UPDATE) {
- sc->beacon.updateslot = COMMIT; /* commit next beacon */
+ sc->beacon.updateslot = COMMIT;
sc->beacon.slotupdate = slot;
- } else if (sc->beacon.updateslot == COMMIT && sc->beacon.slotupdate == slot) {
+ } else if (sc->beacon.updateslot == COMMIT &&
+ sc->beacon.slotupdate == slot) {
ah->slottime = sc->beacon.slottime;
ath9k_hw_init_global_settings(ah);
sc->beacon.updateslot = OK;
}
- if (bfaddr != 0) {
+
+ if (bf) {
+ ath9k_reset_beacon_status(sc);
+
+ ath_dbg(common, BEACON,
+ "Transmitting beacon for slot: %d\n", slot);
+
/* NB: cabq traffic should already be queued and primed */
- ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bfaddr);
+ ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bf->bf_daddr);
if (!edma)
ath9k_hw_txstart(ah, sc->beacon.beaconq);
-
- sc->beacon.ast_be_xmit += bc; /* XXX per-vif? */
}
}
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index af95d18..41b2f3e 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -558,7 +558,7 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
spin_lock_init(&sc->debug.samp_lock);
#endif
tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
- tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet,
+ tasklet_init(&sc->bcon_tasklet, ath9k_beacon_tasklet,
(unsigned long)sc);
INIT_WORK(&sc->hw_reset_work, ath_reset_work);
--
1.7.11.2
--
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