static ssize_t read_file_node_aggr(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_node *an = file->private_data;
struct ath_softc *sc = an->sc;
struct ath_atx_tid *tid;
struct ath_txq *txq;
u32 len = 0, size = 4096;
char *buf;
size_t retval;
int tidno;
buf = kzalloc(size, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
if (!an->sta->ht_cap.ht_supported) {
len = scnprintf(buf, size, "%s\n",
"HT not supported");
goto exit;
}
len = scnprintf(buf, size, "Max-AMPDU: %d\n",
an->maxampdu);
len += scnprintf(buf + len, size - len, "MPDU Density: %d\n\n",
an->mpdudensity);
len += scnprintf(buf + len, size - len,
"\n%3s%11s%10s%10s%10s%10s%9s%6s%8s\n",
"TID", "SEQ_START", "SEQ_NEXT", "BAW_SIZE",
"BAW_HEAD", "BAW_TAIL", "BAR_IDX", "SCHED", "PAUSED");
for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) {
tid = ath_node_to_tid(an, tidno);
txq = tid->txq;
ath_txq_lock(sc, txq);
if (tid->active) {
len += scnprintf(buf + len, size - len,
"%3d%11d%10d%10d%10d%10d%9d%6d\n",
tid->tidno,
tid->seq_start,
tid->seq_next,
tid->baw_size,
tid->baw_head,
tid->baw_tail,
tid->bar_index,
!list_empty(&tid->list));
}
ath_txq_unlock(sc, txq);
}
exit:
retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return retval;
}
/*
* TX polling - checks if the TX engine is stuck somewhere
* and issues a chip reset if so.
*/
void ath_tx_complete_poll_work(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc,
tx_complete_work.work);
struct ath_txq *txq;
int i;
bool needreset = false;
if (sc->tx99_state) {
ath_dbg(ath9k_hw_common(sc->sc_ah), RESET,
"skip tx hung detection on tx99\n");
return;
}
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
txq = sc->tx.txq_map[i];
ath_txq_lock(sc, txq);
if (txq->axq_depth) {
if (txq->axq_tx_inprogress) {
needreset = true;
ath_txq_unlock(sc, txq);
break;
} else {
txq->axq_tx_inprogress = true;
}
}
ath_txq_unlock(sc, txq);
}
if (needreset) {
ath_dbg(ath9k_hw_common(sc->sc_ah), RESET,
"tx hung, resetting the chip\n");
ath9k_queue_reset(sc, RESET_TYPE_TX_HANG);
return;
}
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work,
msecs_to_jiffies(ATH_TX_COMPLETE_POLL_INT));
}
static void print_queue(struct ath_softc *sc, struct ath_txq *txq,
struct seq_file *file)
{
ath_txq_lock(sc, txq);
seq_printf(file, "%s: %d ", "qnum", txq->axq_qnum);
seq_printf(file, "%s: %2d ", "qdepth", txq->axq_depth);
seq_printf(file, "%s: %2d ", "ampdu-depth", txq->axq_ampdu_depth);
seq_printf(file, "%s: %3d\n", "pending", txq->pending_frames);
ath_txq_unlock(sc, txq);
}
static ssize_t print_queue(struct ath_softc *sc, struct ath_txq *txq,
char *buf, ssize_t size)
{
ssize_t len = 0;
ath_txq_lock(sc, txq);
len += scnprintf(buf + len, size - len, "%s: %d ",
"qnum", txq->axq_qnum);
len += scnprintf(buf + len, size - len, "%s: %2d ",
"qdepth", txq->axq_depth);
len += scnprintf(buf + len, size - len, "%s: %2d ",
"ampdu-depth", txq->axq_ampdu_depth);
len += scnprintf(buf + len, size - len, "%s: %3d ",
"pending", txq->pending_frames);
len += scnprintf(buf + len, size - len, "%s: %d\n",
"stopped", txq->stopped);
ath_txq_unlock(sc, txq);
return len;
}
/*
* TX polling - checks if the TX engine is stuck somewhere
* and issues a chip reset if so.
*/
void ath_tx_complete_poll_work(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc,
tx_complete_work.work);
struct ath_txq *txq;
int i;
bool needreset = false;
#ifdef CONFIG_ATH9K_DEBUGFS
sc->tx_complete_poll_work_seen++;
#endif
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
if (ATH_TXQ_SETUP(sc, i)) {
txq = &sc->tx.txq[i];
ath_txq_lock(sc, txq);
if (txq->axq_depth) {
if (txq->axq_tx_inprogress) {
needreset = true;
ath_txq_unlock(sc, txq);
break;
} else {
txq->axq_tx_inprogress = true;
}
}
ath_txq_unlock_complete(sc, txq);
}
if (needreset) {
ath_dbg(ath9k_hw_common(sc->sc_ah), RESET,
"tx hung, resetting the chip\n");
RESET_STAT_INC(sc, RESET_TYPE_TX_HANG);
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
return;
}
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work,
msecs_to_jiffies(ATH_TX_COMPLETE_POLL_INT));
}
