module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
+static int modparam_ht;
+module_param_named(ht, modparam_ht, bool, S_IRUGO);
+MODULE_PARM_DESC(ht, "enable MPDU aggregation.");
+
#define RATE(_bitrate, _hw_rate, _txpidx, _flags) { \
.bitrate = (_bitrate), \
.flags = (_flags), \
{ \
.ht_supported = true, \
.cap = IEEE80211_HT_CAP_MAX_AMSDU | \
- IEEE80211_HT_CAP_SM_PS | \
IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \
IEEE80211_HT_CAP_SGI_40 | \
+ IEEE80211_HT_CAP_GRN_FLD | \
IEEE80211_HT_CAP_DSSSCCK40 | \
IEEE80211_HT_CAP_SM_PS, \
.ampdu_factor = 3, \
.ampdu_density = 6, \
.mcs = { \
- .rx_mask = { 0xFF, 0xFF, 0, 0, 0, 0, 0, 0, 0, 0, }, \
+ .rx_mask = { 0xff, 0xff, 0, 0, 0x1, 0, 0, 0, 0, 0, }, \
+ .rx_highest = cpu_to_le16(300), \
+ .tx_params = IEEE80211_HT_MCS_TX_DEFINED, \
}, \
}
.ht_cap = AR9170_HT_CAP,
};
-#ifdef AR9170_QUEUE_DEBUG
-/*
- * In case some wants works with AR9170's crazy tx_status queueing techniques.
- * He might need this rather useful probing function.
- *
- * NOTE: caller must hold the queue's spinlock!
- */
+static void ar9170_tx(struct ar9170 *ar);
+static bool ar9170_tx_ampdu(struct ar9170 *ar);
+
+static inline u16 ar9170_get_seq_h(struct ieee80211_hdr *hdr)
+{
+ return le16_to_cpu(hdr->seq_ctrl) >> 4;
+}
+
+static inline u16 ar9170_get_seq(struct sk_buff *skb)
+{
+ struct ar9170_tx_control *txc = (void *) skb->data;
+ return ar9170_get_seq_h((void *) txc->frame_data);
+}
+
+static inline u16 ar9170_get_tid(struct sk_buff *skb)
+{
+ struct ar9170_tx_control *txc = (void *) skb->data;
+ struct ieee80211_hdr *hdr = (void *) txc->frame_data;
+
+ return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
+}
+
+#define GET_NEXT_SEQ(seq) ((seq + 1) & 0x0fff)
+#define GET_NEXT_SEQ_FROM_SKB(skb) (GET_NEXT_SEQ(ar9170_get_seq(skb)))
+#if (defined AR9170_QUEUE_DEBUG) || (defined AR9170_TXAGG_DEBUG)
static void ar9170_print_txheader(struct ar9170 *ar, struct sk_buff *skb)
{
struct ar9170_tx_control *txc = (void *) skb->data;
- struct ieee80211_hdr *hdr = (void *)txc->frame_data;
+ struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb);
+ struct ar9170_tx_info *arinfo = (void *) txinfo->rate_driver_data;
+ struct ieee80211_hdr *hdr = (void *) txc->frame_data;
- printk(KERN_DEBUG "%s: => FRAME [skb:%p, queue:%d, DA:[%pM] "
- "mac_control:%04x, phy_control:%08x]\n",
+ printk(KERN_DEBUG "%s: => FRAME [skb:%p, q:%d, DA:[%pM] flags:%x s:%d "
+ "mac_ctrl:%04x, phy_ctrl:%08x, timeout:[%d ms]]\n",
wiphy_name(ar->hw->wiphy), skb, skb_get_queue_mapping(skb),
- ieee80211_get_DA(hdr), le16_to_cpu(txc->mac_control),
- le32_to_cpu(txc->phy_control));
+ ieee80211_get_DA(hdr), arinfo->flags, ar9170_get_seq_h(hdr),
+ le16_to_cpu(txc->mac_control), le32_to_cpu(txc->phy_control),
+ jiffies_to_msecs(arinfo->timeout - jiffies));
}
-static void ar9170_dump_station_tx_status_queue(struct ar9170 *ar,
- struct sk_buff_head *queue)
+static void __ar9170_dump_txqueue(struct ar9170 *ar,
+ struct sk_buff_head *queue)
{
struct sk_buff *skb;
int i = 0;
printk(KERN_DEBUG "---[ cut here ]---\n");
- printk(KERN_DEBUG "%s: %d entries in tx_status queue.\n",
+ printk(KERN_DEBUG "%s: %d entries in queue.\n",
wiphy_name(ar->hw->wiphy), skb_queue_len(queue));
skb_queue_walk(queue, skb) {
- struct ar9170_tx_control *txc = (void *) skb->data;
- struct ieee80211_hdr *hdr = (void *)txc->frame_data;
-
- printk(KERN_DEBUG "index:%d => \n", i);
+ printk(KERN_DEBUG "index:%d => \n", i++);
ar9170_print_txheader(ar, skb);
}
+ if (i != skb_queue_len(queue))
+ printk(KERN_DEBUG "WARNING: queue frame counter "
+ "mismatch %d != %d\n", skb_queue_len(queue), i);
printk(KERN_DEBUG "---[ end ]---\n");
}
+#endif /* AR9170_QUEUE_DEBUG || AR9170_TXAGG_DEBUG */
+
+#ifdef AR9170_QUEUE_DEBUG
+static void ar9170_dump_txqueue(struct ar9170 *ar,
+ struct sk_buff_head *queue)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&queue->lock, flags);
+ __ar9170_dump_txqueue(ar, queue);
+ spin_unlock_irqrestore(&queue->lock, flags);
+}
#endif /* AR9170_QUEUE_DEBUG */
-void ar9170_handle_tx_status(struct ar9170 *ar, struct sk_buff *skb,
- bool valid_status, u16 tx_status)
+#ifdef AR9170_QUEUE_STOP_DEBUG
+static void __ar9170_dump_txstats(struct ar9170 *ar)
+{
+ int i;
+
+ printk(KERN_DEBUG "%s: QoS queue stats\n",
+ wiphy_name(ar->hw->wiphy));
+
+ for (i = 0; i < __AR9170_NUM_TXQ; i++)
+ printk(KERN_DEBUG "%s: queue:%d limit:%d len:%d waitack:%d "
+ " stopped:%d\n", wiphy_name(ar->hw->wiphy), i,
+ ar->tx_stats[i].limit, ar->tx_stats[i].len,
+ skb_queue_len(&ar->tx_status[i]),
+ ieee80211_queue_stopped(ar->hw, i));
+}
+#endif /* AR9170_QUEUE_STOP_DEBUG */
+
+#ifdef AR9170_TXAGG_DEBUG
+static void ar9170_dump_tx_status_ampdu(struct ar9170 *ar)
{
- struct ieee80211_tx_info *txinfo;
- unsigned int retries = 0, queue = skb_get_queue_mapping(skb);
unsigned long flags;
- spin_lock_irqsave(&ar->tx_stats_lock, flags);
- ar->tx_stats[queue].len--;
- if (ieee80211_queue_stopped(ar->hw, queue))
- ieee80211_wake_queue(ar->hw, queue);
- spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
+ spin_lock_irqsave(&ar->tx_status_ampdu.lock, flags);
+ printk(KERN_DEBUG "%s: A-MPDU tx_status queue => \n",
+ wiphy_name(ar->hw->wiphy));
+ __ar9170_dump_txqueue(ar, &ar->tx_status_ampdu);
+ spin_unlock_irqrestore(&ar->tx_status_ampdu.lock, flags);
+}
+
+#endif /* AR9170_TXAGG_DEBUG */
+
+/* caller must guarantee exclusive access for _bin_ queue. */
+static void ar9170_recycle_expired(struct ar9170 *ar,
+ struct sk_buff_head *queue,
+ struct sk_buff_head *bin)
+{
+ struct sk_buff *skb, *old = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&queue->lock, flags);
+ while ((skb = skb_peek(queue))) {
+ struct ieee80211_tx_info *txinfo;
+ struct ar9170_tx_info *arinfo;
+
+ txinfo = IEEE80211_SKB_CB(skb);
+ arinfo = (void *) txinfo->rate_driver_data;
+
+ if (time_is_before_jiffies(arinfo->timeout)) {
+#ifdef AR9170_QUEUE_DEBUG
+ printk(KERN_DEBUG "%s: [%ld > %ld] frame expired => "
+ "recycle \n", wiphy_name(ar->hw->wiphy),
+ jiffies, arinfo->timeout);
+ ar9170_print_txheader(ar, skb);
+#endif /* AR9170_QUEUE_DEBUG */
+ __skb_unlink(skb, queue);
+ __skb_queue_tail(bin, skb);
+ } else {
+ break;
+ }
+
+ if (unlikely(old == skb)) {
+ /* bail out - queue is shot. */
+
+ WARN_ON(1);
+ break;
+ }
+ old = skb;
+ }
+ spin_unlock_irqrestore(&queue->lock, flags);
+}
+
+static void ar9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
+ u16 tx_status)
+{
+ struct ieee80211_tx_info *txinfo;
+ unsigned int retries = 0;
txinfo = IEEE80211_SKB_CB(skb);
ieee80211_tx_info_clear_status(txinfo);
break;
}
- if (valid_status)
- txinfo->status.rates[0].count = retries + 1;
-
+ txinfo->status.rates[0].count = retries + 1;
skb_pull(skb, sizeof(struct ar9170_tx_control));
ieee80211_tx_status_irqsafe(ar->hw, skb);
}
-static struct sk_buff *ar9170_find_skb_in_queue(struct ar9170 *ar,
- const u8 *mac,
- const u32 queue,
- struct sk_buff_head *q)
+static void ar9170_tx_fake_ampdu_status(struct ar9170 *ar)
{
- unsigned long flags;
+ struct sk_buff_head success;
struct sk_buff *skb;
+ unsigned int i;
+ unsigned long queue_bitmap = 0;
- spin_lock_irqsave(&q->lock, flags);
- skb_queue_walk(q, skb) {
- struct ar9170_tx_control *txc = (void *) skb->data;
- struct ieee80211_hdr *hdr = (void *) txc->frame_data;
- u32 txc_queue = (le32_to_cpu(txc->phy_control) &
- AR9170_TX_PHY_QOS_MASK) >>
- AR9170_TX_PHY_QOS_SHIFT;
+ skb_queue_head_init(&success);
- if ((queue != txc_queue) ||
- (compare_ether_addr(ieee80211_get_DA(hdr), mac)))
- continue;
+ while (skb_queue_len(&ar->tx_status_ampdu) > AR9170_NUM_TX_STATUS)
+ __skb_queue_tail(&success, skb_dequeue(&ar->tx_status_ampdu));
- __skb_unlink(skb, q);
- spin_unlock_irqrestore(&q->lock, flags);
- return skb;
+ ar9170_recycle_expired(ar, &ar->tx_status_ampdu, &success);
+
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: collected %d A-MPDU frames.\n",
+ wiphy_name(ar->hw->wiphy), skb_queue_len(&success));
+ __ar9170_dump_txqueue(ar, &success);
+#endif /* AR9170_TXAGG_DEBUG */
+
+ while ((skb = __skb_dequeue(&success))) {
+ struct ieee80211_tx_info *txinfo;
+
+ queue_bitmap |= BIT(skb_get_queue_mapping(skb));
+
+ txinfo = IEEE80211_SKB_CB(skb);
+ ieee80211_tx_info_clear_status(txinfo);
+
+ txinfo->flags |= IEEE80211_TX_STAT_ACK;
+ txinfo->status.rates[0].count = 1;
+
+ skb_pull(skb, sizeof(struct ar9170_tx_control));
+ ieee80211_tx_status_irqsafe(ar->hw, skb);
+ }
+
+ for_each_bit(i, &queue_bitmap, BITS_PER_BYTE) {
+#ifdef AR9170_QUEUE_STOP_DEBUG
+ printk(KERN_DEBUG "%s: wake queue %d\n",
+ wiphy_name(ar->hw->wiphy), i);
+ __ar9170_dump_txstats(ar);
+#endif /* AR9170_QUEUE_STOP_DEBUG */
+ ieee80211_wake_queue(ar->hw, i);
+ }
+
+ if (queue_bitmap)
+ ar9170_tx(ar);
+}
+
+static void ar9170_tx_ampdu_callback(struct ar9170 *ar, struct sk_buff *skb)
+{
+ struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb);
+ struct ar9170_tx_info *arinfo = (void *) txinfo->rate_driver_data;
+
+ arinfo->timeout = jiffies +
+ msecs_to_jiffies(AR9170_BA_TIMEOUT);
+
+ skb_queue_tail(&ar->tx_status_ampdu, skb);
+ ar9170_tx_fake_ampdu_status(ar);
+ ar->tx_ampdu_pending--;
+
+ if (!list_empty(&ar->tx_ampdu_list) && !ar->tx_ampdu_pending)
+ ar9170_tx_ampdu(ar);
+}
+
+void ar9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ar9170_tx_info *arinfo = (void *) info->rate_driver_data;
+ unsigned int queue = skb_get_queue_mapping(skb);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ar->tx_stats_lock, flags);
+ ar->tx_stats[queue].len--;
+
+ if (skb_queue_empty(&ar->tx_pending[queue])) {
+#ifdef AR9170_QUEUE_STOP_DEBUG
+ printk(KERN_DEBUG "%s: wake queue %d\n",
+ wiphy_name(ar->hw->wiphy), queue);
+ __ar9170_dump_txstats(ar);
+#endif /* AR9170_QUEUE_STOP_DEBUG */
+ ieee80211_wake_queue(ar->hw, queue);
+ }
+ spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
+
+ if (arinfo->flags & AR9170_TX_FLAG_BLOCK_ACK) {
+ ar9170_tx_ampdu_callback(ar, skb);
+ } else if (arinfo->flags & AR9170_TX_FLAG_WAIT_FOR_ACK) {
+ arinfo->timeout = jiffies +
+ msecs_to_jiffies(AR9170_TX_TIMEOUT);
+
+ skb_queue_tail(&ar->tx_status[queue], skb);
+ } else if (arinfo->flags & AR9170_TX_FLAG_NO_ACK) {
+ ar9170_tx_status(ar, skb, AR9170_TX_STATUS_FAILED);
+ } else {
+#ifdef AR9170_QUEUE_DEBUG
+ printk(KERN_DEBUG "%s: unsupported frame flags!\n",
+ wiphy_name(ar->hw->wiphy));
+ ar9170_print_txheader(ar, skb);
+#endif /* AR9170_QUEUE_DEBUG */
+ dev_kfree_skb_any(skb);
+ }
+
+ if (!ar->tx_stats[queue].len &&
+ !skb_queue_empty(&ar->tx_pending[queue])) {
+ ar9170_tx(ar);
}
- spin_unlock_irqrestore(&q->lock, flags);
- return NULL;
}
-static struct sk_buff *ar9170_find_queued_skb(struct ar9170 *ar, const u8 *mac,
- const u32 queue)
+static struct sk_buff *ar9170_get_queued_skb(struct ar9170 *ar,
+ const u8 *mac,
+ struct sk_buff_head *queue,
+ const u32 rate)
{
- struct ieee80211_sta *sta;
+ unsigned long flags;
struct sk_buff *skb;
/*
* the firmware provided (-> destination MAC, and phy_control) -
* and hope that we picked the right one...
*/
- rcu_read_lock();
- sta = ieee80211_find_sta(ar->hw, mac);
-
- if (likely(sta)) {
- struct ar9170_sta_info *sta_priv = (void *) sta->drv_priv;
- skb = skb_dequeue(&sta_priv->tx_status[queue]);
- rcu_read_unlock();
- if (likely(skb))
- return skb;
- } else
- rcu_read_unlock();
-
- /* scan the waste queue for candidates */
- skb = ar9170_find_skb_in_queue(ar, mac, queue,
- &ar->global_tx_status_waste);
- if (!skb) {
- /* so it still _must_ be in the global list. */
- skb = ar9170_find_skb_in_queue(ar, mac, queue,
- &ar->global_tx_status);
- }
+ spin_lock_irqsave(&queue->lock, flags);
+ skb_queue_walk(queue, skb) {
+ struct ar9170_tx_control *txc = (void *) skb->data;
+ struct ieee80211_hdr *hdr = (void *) txc->frame_data;
+ u32 r;
+
+ if (mac && compare_ether_addr(ieee80211_get_DA(hdr), mac)) {
+#ifdef AR9170_QUEUE_DEBUG
+ printk(KERN_DEBUG "%s: skip frame => DA %pM != %pM\n",
+ wiphy_name(ar->hw->wiphy), mac,
+ ieee80211_get_DA(hdr));
+ ar9170_print_txheader(ar, skb);
+#endif /* AR9170_QUEUE_DEBUG */
+ continue;
+ }
+
+ r = (le32_to_cpu(txc->phy_control) & AR9170_TX_PHY_MCS_MASK) >>
+ AR9170_TX_PHY_MCS_SHIFT;
+
+ if ((rate != AR9170_TX_INVALID_RATE) && (r != rate)) {
#ifdef AR9170_QUEUE_DEBUG
- if (unlikely((!skb) && net_ratelimit())) {
- printk(KERN_ERR "%s: ESS:[%pM] does not have any "
- "outstanding frames in this queue (%d).\n",
- wiphy_name(ar->hw->wiphy), mac, queue);
+ printk(KERN_DEBUG "%s: skip frame => rate %d != %d\n",
+ wiphy_name(ar->hw->wiphy), rate, r);
+ ar9170_print_txheader(ar, skb);
+#endif /* AR9170_QUEUE_DEBUG */
+ continue;
+ }
+
+ __skb_unlink(skb, queue);
+ spin_unlock_irqrestore(&queue->lock, flags);
+ return skb;
}
+
+#ifdef AR9170_QUEUE_DEBUG
+ printk(KERN_ERR "%s: ESS:[%pM] does not have any "
+ "outstanding frames in queue.\n",
+ wiphy_name(ar->hw->wiphy), mac);
+ __ar9170_dump_txqueue(ar, queue);
#endif /* AR9170_QUEUE_DEBUG */
- return skb;
+ spin_unlock_irqrestore(&queue->lock, flags);
+
+ return NULL;
+}
+
+static void ar9170_handle_block_ack(struct ar9170 *ar, u16 count, u16 r)
+{
+ struct sk_buff *skb;
+ struct ieee80211_tx_info *txinfo;
+
+ while (count) {
+ skb = ar9170_get_queued_skb(ar, NULL, &ar->tx_status_ampdu, r);
+ if (!skb)
+ break;
+
+ txinfo = IEEE80211_SKB_CB(skb);
+ ieee80211_tx_info_clear_status(txinfo);
+
+ /* FIXME: maybe more ? */
+ txinfo->status.rates[0].count = 1;
+
+ skb_pull(skb, sizeof(struct ar9170_tx_control));
+ ieee80211_tx_status_irqsafe(ar->hw, skb);
+ count--;
+ }
+
+#ifdef AR9170_TXAGG_DEBUG
+ if (count) {
+ printk(KERN_DEBUG "%s: got %d more failed mpdus, but no more "
+ "suitable frames left in tx_status queue.\n",
+ wiphy_name(ar->hw->wiphy), count);
+
+ ar9170_dump_tx_status_ampdu(ar);
+ }
+#endif /* AR9170_TXAGG_DEBUG */
}
/*
- * This worker tries to keep the global tx_status queue empty.
- * So we can guarantee that incoming tx_status reports for
- * unregistered stations are always synced with the actual
- * frame - which we think - belongs to.
+ * This worker tries to keeps an maintain tx_status queues.
+ * So we can guarantee that incoming tx_status reports are
+ * actually for a pending frame.
*/
-static void ar9170_tx_status_janitor(struct work_struct *work)
+static void ar9170_tx_janitor(struct work_struct *work)
{
struct ar9170 *ar = container_of(work, struct ar9170,
- tx_status_janitor.work);
- struct sk_buff *skb;
+ tx_janitor.work);
+ struct sk_buff_head waste;
+ unsigned int i;
+ bool resched = false;
if (unlikely(!IS_STARTED(ar)))
return ;
- mutex_lock(&ar->mutex);
- /* recycle the garbage back to mac80211... one by one. */
- while ((skb = skb_dequeue(&ar->global_tx_status_waste))) {
+ skb_queue_head_init(&waste);
+
+ for (i = 0; i < __AR9170_NUM_TXQ; i++) {
#ifdef AR9170_QUEUE_DEBUG
- printk(KERN_DEBUG "%s: dispose queued frame =>\n",
- wiphy_name(ar->hw->wiphy));
- ar9170_print_txheader(ar, skb);
+ printk(KERN_DEBUG "%s: garbage collector scans queue:%d\n",
+ wiphy_name(ar->hw->wiphy), i);
+ ar9170_dump_txqueue(ar, &ar->tx_pending[i]);
+ ar9170_dump_txqueue(ar, &ar->tx_status[i]);
#endif /* AR9170_QUEUE_DEBUG */
- ar9170_handle_tx_status(ar, skb, false,
- AR9170_TX_STATUS_FAILED);
- }
- while ((skb = skb_dequeue(&ar->global_tx_status))) {
-#ifdef AR9170_QUEUE_DEBUG
- printk(KERN_DEBUG "%s: moving frame into waste queue =>\n",
- wiphy_name(ar->hw->wiphy));
+ ar9170_recycle_expired(ar, &ar->tx_status[i], &waste);
+ ar9170_recycle_expired(ar, &ar->tx_pending[i], &waste);
+ skb_queue_purge(&waste);
- ar9170_print_txheader(ar, skb);
-#endif /* AR9170_QUEUE_DEBUG */
- skb_queue_tail(&ar->global_tx_status_waste, skb);
+ if (!skb_queue_empty(&ar->tx_status[i]) ||
+ !skb_queue_empty(&ar->tx_pending[i]))
+ resched = true;
}
- /* recall the janitor in 100ms - if there's garbage in the can. */
- if (skb_queue_len(&ar->global_tx_status_waste) > 0)
- queue_delayed_work(ar->hw->workqueue, &ar->tx_status_janitor,
- msecs_to_jiffies(100));
+ ar9170_tx_fake_ampdu_status(ar);
- mutex_unlock(&ar->mutex);
+ if (!resched)
+ return;
+
+ ieee80211_queue_delayed_work(ar->hw,
+ &ar->tx_janitor,
+ msecs_to_jiffies(AR9170_JANITOR_DELAY));
}
-static void ar9170_handle_command_response(struct ar9170 *ar,
- void *buf, u32 len)
+void ar9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len)
{
struct ar9170_cmd_response *cmd = (void *) buf;
*/
struct sk_buff *skb;
- u32 queue = (le32_to_cpu(cmd->tx_status.rate) &
- AR9170_TX_PHY_QOS_MASK) >> AR9170_TX_PHY_QOS_SHIFT;
+ u32 phy = le32_to_cpu(cmd->tx_status.rate);
+ u32 q = (phy & AR9170_TX_PHY_QOS_MASK) >>
+ AR9170_TX_PHY_QOS_SHIFT;
+#ifdef AR9170_QUEUE_DEBUG
+ printk(KERN_DEBUG "%s: recv tx_status for %pM, p:%08x, q:%d\n",
+ wiphy_name(ar->hw->wiphy), cmd->tx_status.dst, phy, q);
+#endif /* AR9170_QUEUE_DEBUG */
- skb = ar9170_find_queued_skb(ar, cmd->tx_status.dst, queue);
+ skb = ar9170_get_queued_skb(ar, cmd->tx_status.dst,
+ &ar->tx_status[q],
+ AR9170_TX_INVALID_RATE);
if (unlikely(!skb))
return ;
- ar9170_handle_tx_status(ar, skb, true,
- le16_to_cpu(cmd->tx_status.status));
+ ar9170_tx_status(ar, skb, le16_to_cpu(cmd->tx_status.status));
break;
}
* pre-TBTT event
*/
if (ar->vif && ar->vif->type == NL80211_IFTYPE_AP)
- queue_work(ar->hw->workqueue, &ar->beacon_work);
+ ieee80211_queue_work(ar->hw, &ar->beacon_work);
break;
case 0xc2:
break;
case 0xc4:
+ /* BlockACK bitmap */
+ break;
+
case 0xc5:
/* BlockACK events */
+ ar9170_handle_block_ack(ar,
+ le16_to_cpu(cmd->ba_fail_cnt.failed),
+ le16_to_cpu(cmd->ba_fail_cnt.rate));
+ ar9170_tx_fake_ampdu_status(ar);
break;
case 0xc6:
/* retransmission issue / SIFS/EIFS collision ?! */
break;
+ /* firmware debug */
+ case 0xca:
+ printk(KERN_DEBUG "ar9170 FW: %.*s\n", len - 4, (char *)buf + 4);
+ break;
+ case 0xcb:
+ len -= 4;
+
+ switch (len) {
+ case 1:
+ printk(KERN_DEBUG "ar9170 FW: u8: %#.2x\n",
+ *((char *)buf + 4));
+ break;
+ case 2:
+ printk(KERN_DEBUG "ar9170 FW: u8: %#.4x\n",
+ le16_to_cpup((__le16 *)((char *)buf + 4)));
+ break;
+ case 4:
+ printk(KERN_DEBUG "ar9170 FW: u8: %#.8x\n",
+ le32_to_cpup((__le32 *)((char *)buf + 4)));
+ break;
+ case 8:
+ printk(KERN_DEBUG "ar9170 FW: u8: %#.16lx\n",
+ (unsigned long)le64_to_cpup(
+ (__le64 *)((char *)buf + 4)));
+ break;
+ }
+ break;
+ case 0xcc:
+ print_hex_dump_bytes("ar9170 FW:", DUMP_PREFIX_NONE,
+ (char *)buf + 4, len - 4);
+ break;
+
default:
printk(KERN_INFO "received unhandled event %x\n", cmd->type);
print_hex_dump_bytes("dump:", DUMP_PREFIX_NONE, buf, len);
ar->rx_mpdu.has_plcp = false;
}
-static int ar9170_nag_limiter(struct ar9170 *ar)
+int ar9170_nag_limiter(struct ar9170 *ar)
{
bool print_message;
ar9170_rx_phy_status(ar, phy, &status);
skb = ar9170_rx_copy_data(buf, mpdu_len);
- if (likely(skb))
- ieee80211_rx_irqsafe(ar->hw, skb, &status);
+ if (likely(skb)) {
+ memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
+ ieee80211_rx_irqsafe(ar->hw, skb);
+ }
}
void ar9170_rx(struct ar9170 *ar, struct sk_buff *skb)
mutex_lock(&ar->mutex);
+ ar->filter_changed = 0;
+
/* reinitialize queues statistics */
memset(&ar->tx_stats, 0, sizeof(ar->tx_stats));
- for (i = 0; i < ARRAY_SIZE(ar->tx_stats); i++)
- ar->tx_stats[i].limit = 8;
+ for (i = 0; i < __AR9170_NUM_TXQ; i++)
+ ar->tx_stats[i].limit = AR9170_TXQ_DEPTH;
/* reset QoS defaults */
AR9170_FILL_QUEUE(ar->edcf[0], 3, 15, 1023, 0); /* BEST EFFORT*/
AR9170_FILL_QUEUE(ar->edcf[3], 2, 3, 7, 47); /* VOICE */
AR9170_FILL_QUEUE(ar->edcf[4], 2, 3, 7, 0); /* SPECIAL */
+ /* set sane AMPDU defaults */
+ ar->global_ampdu_density = 6;
+ ar->global_ampdu_factor = 3;
+
ar->bad_hw_nagger = jiffies;
err = ar->open(ar);
static void ar9170_op_stop(struct ieee80211_hw *hw)
{
struct ar9170 *ar = hw->priv;
+ unsigned int i;
if (IS_STARTED(ar))
ar->state = AR9170_IDLE;
- flush_workqueue(ar->hw->workqueue);
-
- mutex_lock(&ar->mutex);
- cancel_delayed_work_sync(&ar->tx_status_janitor);
+ cancel_delayed_work_sync(&ar->tx_janitor);
+#ifdef CONFIG_AR9170_LEDS
+ cancel_delayed_work_sync(&ar->led_work);
+#endif
cancel_work_sync(&ar->filter_config_work);
cancel_work_sync(&ar->beacon_work);
- skb_queue_purge(&ar->global_tx_status_waste);
- skb_queue_purge(&ar->global_tx_status);
+
+ mutex_lock(&ar->mutex);
if (IS_ACCEPTING_CMD(ar)) {
ar9170_set_leds_state(ar, 0);
ar->stop(ar);
}
+ for (i = 0; i < __AR9170_NUM_TXQ; i++) {
+ skb_queue_purge(&ar->tx_pending[i]);
+ skb_queue_purge(&ar->tx_status[i]);
+ }
+ skb_queue_purge(&ar->tx_status_ampdu);
+
mutex_unlock(&ar->mutex);
}
-int ar9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+static void ar9170_tx_indicate_immba(struct ar9170 *ar, struct sk_buff *skb)
+{
+ struct ar9170_tx_control *txc = (void *) skb->data;
+
+ txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_IMM_AMPDU);
+}
+
+static void ar9170_tx_copy_phy(struct ar9170 *ar, struct sk_buff *dst,
+ struct sk_buff *src)
+{
+ struct ar9170_tx_control *dst_txc, *src_txc;
+ struct ieee80211_tx_info *dst_info, *src_info;
+ struct ar9170_tx_info *dst_arinfo, *src_arinfo;
+
+ src_txc = (void *) src->data;
+ src_info = IEEE80211_SKB_CB(src);
+ src_arinfo = (void *) src_info->rate_driver_data;
+
+ dst_txc = (void *) dst->data;
+ dst_info = IEEE80211_SKB_CB(dst);
+ dst_arinfo = (void *) dst_info->rate_driver_data;
+
+ dst_txc->phy_control = src_txc->phy_control;
+
+ /* same MCS for the whole aggregate */
+ memcpy(dst_info->driver_rates, src_info->driver_rates,
+ sizeof(dst_info->driver_rates));
+}
+
+static int ar9170_tx_prepare(struct ar9170 *ar, struct sk_buff *skb)
{
- struct ar9170 *ar = hw->priv;
struct ieee80211_hdr *hdr;
struct ar9170_tx_control *txc;
struct ieee80211_tx_info *info;
- struct ieee80211_rate *rate = NULL;
struct ieee80211_tx_rate *txrate;
+ struct ar9170_tx_info *arinfo;
unsigned int queue = skb_get_queue_mapping(skb);
- unsigned long flags = 0;
- struct ar9170_sta_info *sta_info = NULL;
- u32 power, chains;
u16 keytype = 0;
u16 len, icv = 0;
- int err;
- bool tx_status;
- if (unlikely(!IS_STARTED(ar)))
- goto err_free;
+ BUILD_BUG_ON(sizeof(*arinfo) > sizeof(info->rate_driver_data));
hdr = (void *)skb->data;
info = IEEE80211_SKB_CB(skb);
len = skb->len;
- spin_lock_irqsave(&ar->tx_stats_lock, flags);
- if (ar->tx_stats[queue].limit < ar->tx_stats[queue].len) {
- spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
- return NETDEV_TX_OK;
- }
-
- ar->tx_stats[queue].len++;
- ar->tx_stats[queue].count++;
- if (ar->tx_stats[queue].limit == ar->tx_stats[queue].len)
- ieee80211_stop_queue(hw, queue);
-
- spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
-
txc = (void *)skb_push(skb, sizeof(*txc));
- tx_status = (((info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) != 0) ||
- ((info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) != 0));
-
if (info->control.hw_key) {
icv = info->control.hw_key->icv_len;
break;
default:
WARN_ON(1);
- goto err_dequeue;
+ goto err_out;
}
}
if (info->flags & IEEE80211_TX_CTL_NO_ACK)
txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_NO_ACK);
- if (info->flags & IEEE80211_TX_CTL_AMPDU)
- txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_AGGR);
-
txrate = &info->control.rates[0];
-
if (txrate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_PROT_CTS);
else if (txrate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_PROT_RTS);
+ arinfo = (void *)info->rate_driver_data;
+ arinfo->timeout = jiffies + msecs_to_jiffies(AR9170_QUEUE_TIMEOUT);
+
+ if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
+ (is_valid_ether_addr(ieee80211_get_DA(hdr)))) {
+ if (info->flags & IEEE80211_TX_CTL_AMPDU) {
+ if (unlikely(!info->control.sta))
+ goto err_out;
+
+ txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_AGGR);
+ arinfo->flags = AR9170_TX_FLAG_BLOCK_ACK;
+
+ goto out;
+ }
+
+ txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_RATE_PROBE);
+ /*
+ * WARNING:
+ * Putting the QoS queue bits into an unexplored territory is
+ * certainly not elegant.
+ *
+ * In my defense: This idea provides a reasonable way to
+ * smuggle valuable information to the tx_status callback.
+ * Also, the idea behind this bit-abuse came straight from
+ * the original driver code.
+ */
+
+ txc->phy_control |=
+ cpu_to_le32(queue << AR9170_TX_PHY_QOS_SHIFT);
+ arinfo->flags = AR9170_TX_FLAG_WAIT_FOR_ACK;
+ } else {
+ arinfo->flags = AR9170_TX_FLAG_NO_ACK;
+ }
+
+out:
+ return 0;
+
+err_out:
+ skb_pull(skb, sizeof(*txc));
+ return -EINVAL;
+}
+
+static void ar9170_tx_prepare_phy(struct ar9170 *ar, struct sk_buff *skb)
+{
+ struct ar9170_tx_control *txc;
+ struct ieee80211_tx_info *info;
+ struct ieee80211_rate *rate = NULL;
+ struct ieee80211_tx_rate *txrate;
+ u32 power, chains;
+
+ txc = (void *) skb->data;
+ info = IEEE80211_SKB_CB(skb);
+ txrate = &info->control.rates[0];
+
if (txrate->flags & IEEE80211_TX_RC_GREEN_FIELD)
txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_GREENFIELD);
u32 r = txrate->idx;
u8 *txpower;
+ /* heavy clip control */
+ txc->phy_control |= cpu_to_le32((r & 0x7) << 7);
+
r <<= AR9170_TX_PHY_MCS_SHIFT;
- if (WARN_ON(r & ~AR9170_TX_PHY_MCS_MASK))
- goto err_dequeue;
+ BUG_ON(r & ~AR9170_TX_PHY_MCS_MASK);
+
txc->phy_control |= cpu_to_le32(r & AR9170_TX_PHY_MCS_MASK);
txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_MOD_HT);
chains = AR9170_TX_PHY_TXCHAIN_1;
}
txc->phy_control |= cpu_to_le32(chains << AR9170_TX_PHY_TXCHAIN_SHIFT);
+}
+
+static bool ar9170_tx_ampdu(struct ar9170 *ar)
+{
+ struct sk_buff_head agg;
+ struct ar9170_sta_tid *tid_info = NULL, *tmp;
+ struct sk_buff *skb, *first = NULL;
+ unsigned long flags, f2;
+ unsigned int i = 0;
+ u16 seq, queue, tmpssn;
+ bool run = false;
+
+ skb_queue_head_init(&agg);
+
+ spin_lock_irqsave(&ar->tx_ampdu_list_lock, flags);
+ if (list_empty(&ar->tx_ampdu_list)) {
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: aggregation list is empty.\n",
+ wiphy_name(ar->hw->wiphy));
+#endif /* AR9170_TXAGG_DEBUG */
+ goto out_unlock;
+ }
+
+ list_for_each_entry_safe(tid_info, tmp, &ar->tx_ampdu_list, list) {
+ if (tid_info->state != AR9170_TID_STATE_COMPLETE) {
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: dangling aggregation entry!\n",
+ wiphy_name(ar->hw->wiphy));
+#endif /* AR9170_TXAGG_DEBUG */
+ continue;
+ }
+
+ if (++i > 64) {
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: enough frames aggregated.\n",
+ wiphy_name(ar->hw->wiphy));
+#endif /* AR9170_TXAGG_DEBUG */
+ break;
+ }
+
+ queue = TID_TO_WME_AC(tid_info->tid);
+
+ if (skb_queue_len(&ar->tx_pending[queue]) >=
+ AR9170_NUM_TX_AGG_MAX) {
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: queue %d full.\n",
+ wiphy_name(ar->hw->wiphy), queue);
+#endif /* AR9170_TXAGG_DEBUG */
+ continue;
+ }
+
+ list_del_init(&tid_info->list);
+
+ spin_lock_irqsave(&tid_info->queue.lock, f2);
+ tmpssn = seq = tid_info->ssn;
+ first = skb_peek(&tid_info->queue);
+
+ if (likely(first))
+ tmpssn = ar9170_get_seq(first);
+
+ if (unlikely(tmpssn != seq)) {
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: ssn mismatch [%d != %d]\n.",
+ wiphy_name(ar->hw->wiphy), seq, tmpssn);
+#endif /* AR9170_TXAGG_DEBUG */
+ tid_info->ssn = tmpssn;
+ }
+
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: generate A-MPDU for tid:%d ssn:%d with "
+ "%d queued frames.\n", wiphy_name(ar->hw->wiphy),
+ tid_info->tid, tid_info->ssn,
+ skb_queue_len(&tid_info->queue));
+ __ar9170_dump_txqueue(ar, &tid_info->queue);
+#endif /* AR9170_TXAGG_DEBUG */
+
+ while ((skb = skb_peek(&tid_info->queue))) {
+ if (unlikely(ar9170_get_seq(skb) != seq))
+ break;
+
+ __skb_unlink(skb, &tid_info->queue);
+ tid_info->ssn = seq = GET_NEXT_SEQ(seq);
+
+ if (unlikely(skb_get_queue_mapping(skb) != queue)) {
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: tid:%d(q:%d) queue:%d "
+ "!match.\n", wiphy_name(ar->hw->wiphy),
+ tid_info->tid,
+ TID_TO_WME_AC(tid_info->tid),
+ skb_get_queue_mapping(skb));
+#endif /* AR9170_TXAGG_DEBUG */
+ dev_kfree_skb_any(skb);
+ continue;
+ }
+
+ if (unlikely(first == skb)) {
+ ar9170_tx_prepare_phy(ar, skb);
+ __skb_queue_tail(&agg, skb);
+ first = skb;
+ } else {
+ ar9170_tx_copy_phy(ar, skb, first);
+ __skb_queue_tail(&agg, skb);
+ }
+
+ if (unlikely(skb_queue_len(&agg) ==
+ AR9170_NUM_TX_AGG_MAX))
+ break;
+ }
+
+ if (skb_queue_empty(&tid_info->queue))
+ tid_info->active = false;
+ else
+ list_add_tail(&tid_info->list,
+ &ar->tx_ampdu_list);
+
+ spin_unlock_irqrestore(&tid_info->queue.lock, f2);
+
+ if (unlikely(skb_queue_empty(&agg))) {
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: queued empty list!\n",
+ wiphy_name(ar->hw->wiphy));
+#endif /* AR9170_TXAGG_DEBUG */
+ continue;
+ }
- if (tx_status) {
- txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_RATE_PROBE);
/*
- * WARNING:
- * Putting the QoS queue bits into an unexplored territory is
- * certainly not elegant.
- *
- * In my defense: This idea provides a reasonable way to
- * smuggle valuable information to the tx_status callback.
- * Also, the idea behind this bit-abuse came straight from
- * the original driver code.
+ * tell the FW/HW that this is the last frame,
+ * that way it will wait for the immediate block ack.
*/
+ if (likely(skb_peek_tail(&agg)))
+ ar9170_tx_indicate_immba(ar, skb_peek_tail(&agg));
- txc->phy_control |=
- cpu_to_le32(queue << AR9170_TX_PHY_QOS_SHIFT);
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: generated A-MPDU looks like this:\n",
+ wiphy_name(ar->hw->wiphy));
+ __ar9170_dump_txqueue(ar, &agg);
+#endif /* AR9170_TXAGG_DEBUG */
- if (info->control.sta) {
- sta_info = (void *) info->control.sta->drv_priv;
- skb_queue_tail(&sta_info->tx_status[queue], skb);
- } else {
- skb_queue_tail(&ar->global_tx_status, skb);
+ spin_unlock_irqrestore(&ar->tx_ampdu_list_lock, flags);
+
+ spin_lock_irqsave(&ar->tx_pending[queue].lock, flags);
+ skb_queue_splice_tail_init(&agg, &ar->tx_pending[queue]);
+ spin_unlock_irqrestore(&ar->tx_pending[queue].lock, flags);
+ run = true;
+
+ spin_lock_irqsave(&ar->tx_ampdu_list_lock, flags);
+ }
+
+out_unlock:
+ spin_unlock_irqrestore(&ar->tx_ampdu_list_lock, flags);
+ __skb_queue_purge(&agg);
+
+ return run;
+}
+
+static void ar9170_tx(struct ar9170 *ar)
+{
+ struct sk_buff *skb;
+ unsigned long flags;
+ struct ieee80211_tx_info *info;
+ struct ar9170_tx_info *arinfo;
+ unsigned int i, frames, frames_failed, remaining_space;
+ int err;
+ bool schedule_garbagecollector = false;
+
+ BUILD_BUG_ON(sizeof(*arinfo) > sizeof(info->rate_driver_data));
+
+ if (unlikely(!IS_STARTED(ar)))
+ return ;
- queue_delayed_work(ar->hw->workqueue,
- &ar->tx_status_janitor,
- msecs_to_jiffies(100));
+ remaining_space = AR9170_TX_MAX_PENDING;
+
+ for (i = 0; i < __AR9170_NUM_TXQ; i++) {
+ spin_lock_irqsave(&ar->tx_stats_lock, flags);
+ if (ar->tx_stats[i].len >= ar->tx_stats[i].limit) {
+#ifdef AR9170_QUEUE_DEBUG
+ printk(KERN_DEBUG "%s: queue %d full\n",
+ wiphy_name(ar->hw->wiphy), i);
+
+ printk(KERN_DEBUG "%s: stuck frames: ===> \n",
+ wiphy_name(ar->hw->wiphy));
+ ar9170_dump_txqueue(ar, &ar->tx_pending[i]);
+ ar9170_dump_txqueue(ar, &ar->tx_status[i]);
+#endif /* AR9170_QUEUE_DEBUG */
+
+#ifdef AR9170_QUEUE_STOP_DEBUG
+ printk(KERN_DEBUG "%s: stop queue %d\n",
+ wiphy_name(ar->hw->wiphy), i);
+ __ar9170_dump_txstats(ar);
+#endif /* AR9170_QUEUE_STOP_DEBUG */
+ ieee80211_stop_queue(ar->hw, i);
+ spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
+ continue;
+ }
+
+ frames = min(ar->tx_stats[i].limit - ar->tx_stats[i].len,
+ skb_queue_len(&ar->tx_pending[i]));
+
+ if (remaining_space < frames) {
+#ifdef AR9170_QUEUE_DEBUG
+ printk(KERN_DEBUG "%s: tx quota reached queue:%d, "
+ "remaining slots:%d, needed:%d\n",
+ wiphy_name(ar->hw->wiphy), i, remaining_space,
+ frames);
+#endif /* AR9170_QUEUE_DEBUG */
+ frames = remaining_space;
+ }
+
+ ar->tx_stats[i].len += frames;
+ ar->tx_stats[i].count += frames;
+ spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
+
+ if (!frames)
+ continue;
+
+ frames_failed = 0;
+ while (frames) {
+ skb = skb_dequeue(&ar->tx_pending[i]);
+ if (unlikely(!skb)) {
+ frames_failed += frames;
+ frames = 0;
+ break;
+ }
+
+ info = IEEE80211_SKB_CB(skb);
+ arinfo = (void *) info->rate_driver_data;
+
+ /* TODO: cancel stuck frames */
+ arinfo->timeout = jiffies +
+ msecs_to_jiffies(AR9170_TX_TIMEOUT);
+
+ if (arinfo->flags == AR9170_TX_FLAG_BLOCK_ACK)
+ ar->tx_ampdu_pending++;
+
+#ifdef AR9170_QUEUE_DEBUG
+ printk(KERN_DEBUG "%s: send frame q:%d =>\n",
+ wiphy_name(ar->hw->wiphy), i);
+ ar9170_print_txheader(ar, skb);
+#endif /* AR9170_QUEUE_DEBUG */
+
+ err = ar->tx(ar, skb);
+ if (unlikely(err)) {
+ if (arinfo->flags == AR9170_TX_FLAG_BLOCK_ACK)
+ ar->tx_ampdu_pending--;
+
+ frames_failed++;
+ dev_kfree_skb_any(skb);
+ } else {
+ remaining_space--;
+ schedule_garbagecollector = true;
+ }
+
+ frames--;
+ }
+
+#ifdef AR9170_QUEUE_DEBUG
+ printk(KERN_DEBUG "%s: ar9170_tx report for queue %d\n",
+ wiphy_name(ar->hw->wiphy), i);
+
+ printk(KERN_DEBUG "%s: unprocessed pending frames left:\n",
+ wiphy_name(ar->hw->wiphy));
+ ar9170_dump_txqueue(ar, &ar->tx_pending[i]);
+#endif /* AR9170_QUEUE_DEBUG */
+
+ if (unlikely(frames_failed)) {
+#ifdef AR9170_QUEUE_DEBUG
+ printk(KERN_DEBUG "%s: frames failed %d =>\n",
+ wiphy_name(ar->hw->wiphy), frames_failed);
+#endif /* AR9170_QUEUE_DEBUG */
+
+ spin_lock_irqsave(&ar->tx_stats_lock, flags);
+ ar->tx_stats[i].len -= frames_failed;
+ ar->tx_stats[i].count -= frames_failed;
+#ifdef AR9170_QUEUE_STOP_DEBUG
+ printk(KERN_DEBUG "%s: wake queue %d\n",
+ wiphy_name(ar->hw->wiphy), i);
+ __ar9170_dump_txstats(ar);
+#endif /* AR9170_QUEUE_STOP_DEBUG */
+ ieee80211_wake_queue(ar->hw, i);
+ spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
}
}
- err = ar->tx(ar, skb, tx_status, 0);
- if (unlikely(tx_status && err)) {
- if (info->control.sta)
- skb_unlink(skb, &sta_info->tx_status[queue]);
- else
- skb_unlink(skb, &ar->global_tx_status);
+ if (!schedule_garbagecollector)
+ return;
+
+ ieee80211_queue_delayed_work(ar->hw,
+ &ar->tx_janitor,
+ msecs_to_jiffies(AR9170_JANITOR_DELAY));
+}
+
+static bool ar9170_tx_ampdu_queue(struct ar9170 *ar, struct sk_buff *skb)
+{
+ struct ieee80211_tx_info *txinfo;
+ struct ar9170_sta_info *sta_info;
+ struct ar9170_sta_tid *agg;
+ struct sk_buff *iter;
+ unsigned long flags, f2;
+ unsigned int max;
+ u16 tid, seq, qseq;
+ bool run = false, queue = false;
+
+ tid = ar9170_get_tid(skb);
+ seq = ar9170_get_seq(skb);
+ txinfo = IEEE80211_SKB_CB(skb);
+ sta_info = (void *) txinfo->control.sta->drv_priv;
+ agg = &sta_info->agg[tid];
+ max = sta_info->ampdu_max_len;
+
+ spin_lock_irqsave(&ar->tx_ampdu_list_lock, flags);
+
+ if (unlikely(agg->state != AR9170_TID_STATE_COMPLETE)) {
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: BlockACK session not fully initialized "
+ "for ESS:%pM tid:%d state:%d.\n",
+ wiphy_name(ar->hw->wiphy), agg->addr, agg->tid,
+ agg->state);
+#endif /* AR9170_TXAGG_DEBUG */
+ goto err_unlock;
}
- return NETDEV_TX_OK;
+ if (!agg->active) {
+ agg->active = true;
+ agg->ssn = seq;
+ queue = true;
+ }
-err_dequeue:
- spin_lock_irqsave(&ar->tx_stats_lock, flags);
- ar->tx_stats[queue].len--;
- ar->tx_stats[queue].count--;
- spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
+ /* check if seq is within the BA window */
+ if (unlikely(!BAW_WITHIN(agg->ssn, max, seq))) {
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: frame with tid:%d seq:%d does not "
+ "fit into BA window (%d - %d)\n",
+ wiphy_name(ar->hw->wiphy), tid, seq, agg->ssn,
+ (agg->ssn + max) & 0xfff);
+#endif /* AR9170_TXAGG_DEBUG */
+ goto err_unlock;
+ }
+
+ spin_lock_irqsave(&agg->queue.lock, f2);
+
+ skb_queue_reverse_walk(&agg->queue, iter) {
+ qseq = ar9170_get_seq(iter);
+
+ if (GET_NEXT_SEQ(qseq) == seq) {
+ __skb_queue_after(&agg->queue, iter, skb);
+ goto queued;
+ }
+ }
+
+ __skb_queue_head(&agg->queue, skb);
+
+queued:
+ spin_unlock_irqrestore(&agg->queue.lock, f2);
+
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_DEBUG "%s: new aggregate %p queued.\n",
+ wiphy_name(ar->hw->wiphy), skb);
+ __ar9170_dump_txqueue(ar, &agg->queue);
+#endif /* AR9170_TXAGG_DEBUG */
+
+ if (skb_queue_len(&agg->queue) >= AR9170_NUM_TX_AGG_MAX)
+ run = true;
+
+ if (queue)
+ list_add_tail(&agg->list, &ar->tx_ampdu_list);
+
+ spin_unlock_irqrestore(&ar->tx_ampdu_list_lock, flags);
+ return run;
+
+err_unlock:
+ spin_unlock_irqrestore(&ar->tx_ampdu_list_lock, flags);
+ dev_kfree_skb_irq(skb);
+ return false;
+}
+
+int ar9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+ struct ar9170 *ar = hw->priv;
+ struct ieee80211_tx_info *info;
+
+ if (unlikely(!IS_STARTED(ar)))
+ goto err_free;
+
+ if (unlikely(ar9170_tx_prepare(ar, skb)))
+ goto err_free;
+
+ info = IEEE80211_SKB_CB(skb);
+ if (info->flags & IEEE80211_TX_CTL_AMPDU) {
+ bool run = ar9170_tx_ampdu_queue(ar, skb);
+
+ if (run || !ar->tx_ampdu_pending)
+ ar9170_tx_ampdu(ar);
+ } else {
+ unsigned int queue = skb_get_queue_mapping(skb);
+
+ ar9170_tx_prepare_phy(ar, skb);
+ skb_queue_tail(&ar->tx_pending[queue], skb);
+ }
+
+ ar9170_tx(ar);
+ return NETDEV_TX_OK;
err_free:
- dev_kfree_skb(skb);
+ dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
mutex_lock(&ar->mutex);
- if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
- /* TODO */
- err = 0;
- }
-
if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
/* TODO */
err = 0;
}
if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
+
+ /* adjust slot time for 5 GHz */
+ err = ar9170_set_slot_time(ar);
+ if (err)
+ goto out;
+
+ err = ar9170_set_dyn_sifs_ack(ar);
+ if (err)
+ goto out;
+
err = ar9170_set_channel(ar, hw->conf.channel,
AR9170_RFI_NONE,
nl80211_to_ar9170(hw->conf.channel_type));
if (err)
goto out;
- /* adjust slot time for 5 GHz */
- if (hw->conf.channel->band == IEEE80211_BAND_5GHZ)
- err = ar9170_write_reg(ar, AR9170_MAC_REG_SLOT_TIME,
- 9 << 10);
}
out:
return ;
mutex_lock(&ar->mutex);
- if (ar->filter_changed & AR9170_FILTER_CHANGED_PROMISC) {
+ if (test_and_clear_bit(AR9170_FILTER_CHANGED_MODE,
+ &ar->filter_changed)) {
err = ar9170_set_operating_mode(ar);
if (err)
goto unlock;
}
- if (ar->filter_changed & AR9170_FILTER_CHANGED_MULTICAST) {
+ if (test_and_clear_bit(AR9170_FILTER_CHANGED_MULTICAST,
+ &ar->filter_changed)) {
err = ar9170_update_multicast(ar);
if (err)
goto unlock;
}
- if (ar->filter_changed & AR9170_FILTER_CHANGED_FRAMEFILTER)
+ if (test_and_clear_bit(AR9170_FILTER_CHANGED_FRAMEFILTER,
+ &ar->filter_changed)) {
err = ar9170_update_frame_filter(ar);
+ if (err)
+ goto unlock;
+ }
unlock:
mutex_unlock(&ar->mutex);
}
+static u64 ar9170_op_prepare_multicast(struct ieee80211_hw *hw, int mc_count,
+ struct dev_addr_list *mclist)
+{
+ u64 mchash;
+ int i;
+
+ /* always get broadcast frames */
+ mchash = 1ULL << (0xff >> 2);
+
+ for (i = 0; i < mc_count; i++) {
+ if (WARN_ON(!mclist))
+ break;
+ mchash |= 1ULL << (mclist->dmi_addr[5] >> 2);
+ mclist = mclist->next;
+ }
+
+ return mchash;
+}
+
static void ar9170_op_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *new_flags,
- int mc_count, struct dev_mc_list *mclist)
+ u64 multicast)
{
struct ar9170 *ar = hw->priv;
* then checking the error flags, later.
*/
- if (changed_flags & FIF_ALLMULTI) {
- if (*new_flags & FIF_ALLMULTI) {
- ar->want_mc_hash = ~0ULL;
- } else {
- u64 mchash;
- int i;
-
- /* always get broadcast frames */
- mchash = 1ULL << (0xff>>2);
+ if (changed_flags & FIF_ALLMULTI && *new_flags & FIF_ALLMULTI)
+ multicast = ~0ULL;
- for (i = 0; i < mc_count; i++) {
- if (WARN_ON(!mclist))
- break;
- mchash |= 1ULL << (mclist->dmi_addr[5] >> 2);
- mclist = mclist->next;
- }
- ar->want_mc_hash = mchash;
- }
- ar->filter_changed |= AR9170_FILTER_CHANGED_MULTICAST;
+ if (multicast != ar->want_mc_hash) {
+ ar->want_mc_hash = multicast;
+ set_bit(AR9170_FILTER_CHANGED_MULTICAST, &ar->filter_changed);
}
if (changed_flags & FIF_CONTROL) {
else
ar->want_filter = ar->cur_filter & ~filter;
- ar->filter_changed |= AR9170_FILTER_CHANGED_FRAMEFILTER;
+ set_bit(AR9170_FILTER_CHANGED_FRAMEFILTER,
+ &ar->filter_changed);
}
if (changed_flags & FIF_PROMISC_IN_BSS) {
ar->sniffer_enabled = ((*new_flags) & FIF_PROMISC_IN_BSS) != 0;
- ar->filter_changed |= AR9170_FILTER_CHANGED_PROMISC;
+ set_bit(AR9170_FILTER_CHANGED_MODE,
+ &ar->filter_changed);
}
if (likely(IS_STARTED(ar)))
- queue_work(ar->hw->workqueue, &ar->filter_config_work);
+ ieee80211_queue_work(ar->hw, &ar->filter_config_work);
}
static void ar9170_op_bss_info_changed(struct ieee80211_hw *hw,
if (changed & BSS_CHANGED_BSSID) {
memcpy(ar->bssid, bss_conf->bssid, ETH_ALEN);
err = ar9170_set_operating_mode(ar);
+ if (err)
+ goto out;
}
if (changed & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED)) {
err = ar9170_update_beacon(ar);
- if (!err)
- ar9170_set_beacon_timers(ar);
- }
+ if (err)
+ goto out;
- ar9170_regwrite_begin(ar);
+ err = ar9170_set_beacon_timers(ar);
+ if (err)
+ goto out;
+ }
if (changed & BSS_CHANGED_ASSOC) {
- ar->state = bss_conf->assoc ? AR9170_ASSOCIATED : ar->state;
-
#ifndef CONFIG_AR9170_LEDS
/* enable assoc LED. */
err = ar9170_set_leds_state(ar, bss_conf->assoc ? 2 : 0);
#endif /* CONFIG_AR9170_LEDS */
}
- if (changed & BSS_CHANGED_BEACON_INT)
+ if (changed & BSS_CHANGED_BEACON_INT) {
err = ar9170_set_beacon_timers(ar);
+ if (err)
+ goto out;
+ }
if (changed & BSS_CHANGED_HT) {
/* TODO */
}
if (changed & BSS_CHANGED_ERP_SLOT) {
- u32 slottime = 20;
-
- if (bss_conf->use_short_slot)
- slottime = 9;
-
- ar9170_regwrite(AR9170_MAC_REG_SLOT_TIME, slottime << 10);
+ err = ar9170_set_slot_time(ar);
+ if (err)
+ goto out;
}
if (changed & BSS_CHANGED_BASIC_RATES) {
- u32 cck, ofdm;
-
- if (hw->conf.channel->band == IEEE80211_BAND_5GHZ) {
- ofdm = bss_conf->basic_rates;
- cck = 0;
- } else {
- /* four cck rates */
- cck = bss_conf->basic_rates & 0xf;
- ofdm = bss_conf->basic_rates >> 4;
- }
- ar9170_regwrite(AR9170_MAC_REG_BASIC_RATE,
- ofdm << 8 | cck);
+ err = ar9170_set_basic_rates(ar);
+ if (err)
+ goto out;
}
- ar9170_regwrite_finish();
- err = ar9170_regwrite_result();
+out:
mutex_unlock(&ar->mutex);
}
struct ieee80211_sta *sta)
{
struct ar9170 *ar = hw->priv;
- struct ar9170_sta_info *info = (void *) sta->drv_priv;
- struct sk_buff *skb;
+ struct ar9170_sta_info *sta_info = (void *) sta->drv_priv;
unsigned int i;
switch (cmd) {
case STA_NOTIFY_ADD:
- for (i = 0; i < ar->hw->queues; i++)
- skb_queue_head_init(&info->tx_status[i]);
- break;
+ memset(sta_info, 0, sizeof(*sta_info));
- case STA_NOTIFY_REMOVE:
+ if (!sta->ht_cap.ht_supported)
+ break;
- /*
- * transfer all outstanding frames that need a tx_status
- * reports to the global tx_status queue
- */
+ if (sta->ht_cap.ampdu_density > ar->global_ampdu_density)
+ ar->global_ampdu_density = sta->ht_cap.ampdu_density;
- for (i = 0; i < ar->hw->queues; i++) {
- while ((skb = skb_dequeue(&info->tx_status[i]))) {
-#ifdef AR9170_QUEUE_DEBUG
- printk(KERN_DEBUG "%s: queueing frame in "
- "global tx_status queue =>\n",
- wiphy_name(ar->hw->wiphy));
+ if (sta->ht_cap.ampdu_factor < ar->global_ampdu_factor)
+ ar->global_ampdu_factor = sta->ht_cap.ampdu_factor;
- ar9170_print_txheader(ar, skb);
-#endif /* AR9170_QUEUE_DEBUG */
- skb_queue_tail(&ar->global_tx_status, skb);
- }
+ for (i = 0; i < AR9170_NUM_TID; i++) {
+ sta_info->agg[i].state = AR9170_TID_STATE_SHUTDOWN;
+ sta_info->agg[i].active = false;
+ sta_info->agg[i].ssn = 0;
+ sta_info->agg[i].retry = 0;
+ sta_info->agg[i].tid = i;
+ INIT_LIST_HEAD(&sta_info->agg[i].list);
+ skb_queue_head_init(&sta_info->agg[i].queue);
}
- queue_delayed_work(ar->hw->workqueue, &ar->tx_status_janitor,
- msecs_to_jiffies(100));
+
+ sta_info->ampdu_max_len = 1 << (3 + sta->ht_cap.ampdu_factor);
+ break;
+
+ case STA_NOTIFY_REMOVE:
+ if (!sta->ht_cap.ht_supported)
+ break;
+
+ for (i = 0; i < AR9170_NUM_TID; i++) {
+ sta_info->agg[i].state = AR9170_TID_STATE_INVALID;
+ skb_queue_purge(&sta_info->agg[i].queue);
+ }
+
break;
default:
break;
}
+
+ if (IS_STARTED(ar) && ar->filter_changed)
+ ieee80211_queue_work(ar->hw, &ar->filter_config_work);
}
static int ar9170_get_stats(struct ieee80211_hw *hw,
int ret;
mutex_lock(&ar->mutex);
- if ((param) && !(queue > ar->hw->queues)) {
+ if (queue < __AR9170_NUM_TXQ) {
memcpy(&ar->edcf[ar9170_qos_hwmap[queue]],
param, sizeof(*param));
ret = ar9170_set_qos(ar);
- } else
+ } else {
ret = -EINVAL;
+ }
mutex_unlock(&ar->mutex);
return ret;
enum ieee80211_ampdu_mlme_action action,
struct ieee80211_sta *sta, u16 tid, u16 *ssn)
{
+ struct ar9170 *ar = hw->priv;
+ struct ar9170_sta_info *sta_info = (void *) sta->drv_priv;
+ struct ar9170_sta_tid *tid_info = &sta_info->agg[tid];
+ unsigned long flags;
+
+ if (!modparam_ht)
+ return -EOPNOTSUPP;
+
switch (action) {
+ case IEEE80211_AMPDU_TX_START:
+ spin_lock_irqsave(&ar->tx_ampdu_list_lock, flags);
+ if (tid_info->state != AR9170_TID_STATE_SHUTDOWN ||
+ !list_empty(&tid_info->list)) {
+ spin_unlock_irqrestore(&ar->tx_ampdu_list_lock, flags);
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_INFO "%s: A-MPDU [ESS:[%pM] tid:[%d]] "
+ "is in a very bad state!\n",
+ wiphy_name(hw->wiphy), sta->addr, tid);
+#endif /* AR9170_TXAGG_DEBUG */
+ return -EBUSY;
+ }
+
+ *ssn = tid_info->ssn;
+ tid_info->state = AR9170_TID_STATE_PROGRESS;
+ tid_info->active = false;
+ spin_unlock_irqrestore(&ar->tx_ampdu_list_lock, flags);
+ ieee80211_start_tx_ba_cb_irqsafe(hw, sta->addr, tid);
+ break;
+
+ case IEEE80211_AMPDU_TX_STOP:
+ spin_lock_irqsave(&ar->tx_ampdu_list_lock, flags);
+ tid_info->state = AR9170_TID_STATE_SHUTDOWN;
+ list_del_init(&tid_info->list);
+ tid_info->active = false;
+ skb_queue_purge(&tid_info->queue);
+ spin_unlock_irqrestore(&ar->tx_ampdu_list_lock, flags);
+ ieee80211_stop_tx_ba_cb_irqsafe(hw, sta->addr, tid);
+ break;
+
+ case IEEE80211_AMPDU_TX_OPERATIONAL:
+#ifdef AR9170_TXAGG_DEBUG
+ printk(KERN_INFO "%s: A-MPDU for %pM [tid:%d] Operational.\n",
+ wiphy_name(hw->wiphy), sta->addr, tid);
+#endif /* AR9170_TXAGG_DEBUG */
+ spin_lock_irqsave(&ar->tx_ampdu_list_lock, flags);
+ sta_info->agg[tid].state = AR9170_TID_STATE_COMPLETE;
+ spin_unlock_irqrestore(&ar->tx_ampdu_list_lock, flags);
+ break;
+
case IEEE80211_AMPDU_RX_START:
case IEEE80211_AMPDU_RX_STOP:
- /*
- * Something goes wrong -- RX locks up
- * after a while of receiving aggregated
- * frames -- not enabling for now.
- */
- return -EOPNOTSUPP;
+ /* Handled by firmware */
+ break;
+
default:
return -EOPNOTSUPP;
}
+
+ return 0;
}
static const struct ieee80211_ops ar9170_ops = {
.add_interface = ar9170_op_add_interface,
.remove_interface = ar9170_op_remove_interface,
.config = ar9170_op_config,
+ .prepare_multicast = ar9170_op_prepare_multicast,
.configure_filter = ar9170_op_configure_filter,
.conf_tx = ar9170_conf_tx,
.bss_info_changed = ar9170_op_bss_info_changed,
mutex_init(&ar->mutex);
spin_lock_init(&ar->cmdlock);
spin_lock_init(&ar->tx_stats_lock);
- skb_queue_head_init(&ar->global_tx_status);
- skb_queue_head_init(&ar->global_tx_status_waste);
+ spin_lock_init(&ar->tx_ampdu_list_lock);
+ skb_queue_head_init(&ar->tx_status_ampdu);
+ for (i = 0; i < __AR9170_NUM_TXQ; i++) {
+ skb_queue_head_init(&ar->tx_status[i]);
+ skb_queue_head_init(&ar->tx_pending[i]);
+ }
ar9170_rx_reset_rx_mpdu(ar);
INIT_WORK(&ar->filter_config_work, ar9170_set_filters);
INIT_WORK(&ar->beacon_work, ar9170_new_beacon);
- INIT_DELAYED_WORK(&ar->tx_status_janitor, ar9170_tx_status_janitor);
+ INIT_DELAYED_WORK(&ar->tx_janitor, ar9170_tx_janitor);
+ INIT_LIST_HEAD(&ar->tx_ampdu_list);
/* all hw supports 2.4 GHz, so set channel to 1 by default */
ar->channel = &ar9170_2ghz_chantable[0];
IEEE80211_HW_SIGNAL_DBM |
IEEE80211_HW_NOISE_DBM;
+ if (modparam_ht) {
+ ar->hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
+ } else {
+ ar9170_band_2GHz.ht_cap.ht_supported = false;
+ ar9170_band_5GHz.ht_cap.ht_supported = false;
+ }
+
ar->hw->queues = __AR9170_NUM_TXQ;
ar->hw->extra_tx_headroom = 8;
ar->hw->sta_data_size = sizeof(struct ar9170_sta_info);
{
#define RW 8 /* number of words to read at once */
#define RB (sizeof(u32) * RW)
- DECLARE_MAC_BUF(mbuf);
u8 *eeprom = (void *)&ar->eeprom;
u8 *addr = ar->eeprom.mac_address;
__le32 offsets[RW];
+ unsigned int rx_streams, tx_streams, tx_params = 0;
int i, j, err, bands = 0;
BUILD_BUG_ON(sizeof(ar->eeprom) & 3);
ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &ar9170_band_5GHz;
bands++;
}
+
+ rx_streams = hweight8(ar->eeprom.rx_mask);
+ tx_streams = hweight8(ar->eeprom.tx_mask);
+
+ if (rx_streams != tx_streams)
+ tx_params = IEEE80211_HT_MCS_TX_RX_DIFF;
+
+ if (tx_streams >= 1 && tx_streams <= IEEE80211_HT_MCS_TX_MAX_STREAMS)
+ tx_params = (tx_streams - 1) <<
+ IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
+
+ ar9170_band_2GHz.ht_cap.mcs.tx_params |= tx_params;
+ ar9170_band_5GHz.ht_cap.mcs.tx_params |= tx_params;
+
/*
* I measured this, a bandswitch takes roughly
* 135 ms and a frequency switch about 80.
projects / mirror_ubuntu-artful-kernel.git / blobdiff