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path: root/drivers/net/wireless/rt2x00/rt2x00queue.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00queue.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00queue.c178
1 files changed, 98 insertions, 80 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index ca82b3a91697..4b3c70eeef1f 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -221,14 +221,17 @@ static void rt2x00queue_create_tx_descriptor_seq(struct queue_entry *entry,
struct rt2x00_intf *intf = vif_to_intf(tx_info->control.vif);
unsigned long irqflags;
- if (!(tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) ||
- unlikely(!tx_info->control.vif))
+ if (!(tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ))
+ return;
+
+ __set_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags);
+
+ if (!test_bit(DRIVER_REQUIRE_SW_SEQNO, &entry->queue->rt2x00dev->flags))
return;
/*
- * Hardware should insert sequence counter.
- * FIXME: We insert a software sequence counter first for
- * hardware that doesn't support hardware sequence counting.
+ * The hardware is not able to insert a sequence number. Assign a
+ * software generated one here.
*
* This is wrong because beacons are not getting sequence
* numbers assigned properly.
@@ -246,7 +249,6 @@ static void rt2x00queue_create_tx_descriptor_seq(struct queue_entry *entry,
spin_unlock_irqrestore(&intf->seqlock, irqflags);
- __set_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags);
}
static void rt2x00queue_create_tx_descriptor_plcp(struct queue_entry *entry,
@@ -260,6 +262,16 @@ static void rt2x00queue_create_tx_descriptor_plcp(struct queue_entry *entry,
unsigned int duration;
unsigned int residual;
+ /*
+ * Determine with what IFS priority this frame should be send.
+ * Set ifs to IFS_SIFS when the this is not the first fragment,
+ * or this fragment came after RTS/CTS.
+ */
+ if (test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags))
+ txdesc->u.plcp.ifs = IFS_BACKOFF;
+ else
+ txdesc->u.plcp.ifs = IFS_SIFS;
+
/* Data length + CRC + Crypto overhead (IV/EIV/ICV/MIC) */
data_length = entry->skb->len + 4;
data_length += rt2x00crypto_tx_overhead(rt2x00dev, entry->skb);
@@ -268,12 +280,12 @@ static void rt2x00queue_create_tx_descriptor_plcp(struct queue_entry *entry,
* PLCP setup
* Length calculation depends on OFDM/CCK rate.
*/
- txdesc->signal = hwrate->plcp;
- txdesc->service = 0x04;
+ txdesc->u.plcp.signal = hwrate->plcp;
+ txdesc->u.plcp.service = 0x04;
if (hwrate->flags & DEV_RATE_OFDM) {
- txdesc->length_high = (data_length >> 6) & 0x3f;
- txdesc->length_low = data_length & 0x3f;
+ txdesc->u.plcp.length_high = (data_length >> 6) & 0x3f;
+ txdesc->u.plcp.length_low = data_length & 0x3f;
} else {
/*
* Convert length to microseconds.
@@ -288,18 +300,18 @@ static void rt2x00queue_create_tx_descriptor_plcp(struct queue_entry *entry,
* Check if we need to set the Length Extension
*/
if (hwrate->bitrate == 110 && residual <= 30)
- txdesc->service |= 0x80;
+ txdesc->u.plcp.service |= 0x80;
}
- txdesc->length_high = (duration >> 8) & 0xff;
- txdesc->length_low = duration & 0xff;
+ txdesc->u.plcp.length_high = (duration >> 8) & 0xff;
+ txdesc->u.plcp.length_low = duration & 0xff;
/*
* When preamble is enabled we should set the
* preamble bit for the signal.
*/
if (txrate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
- txdesc->signal |= 0x08;
+ txdesc->u.plcp.signal |= 0x08;
}
}
@@ -309,9 +321,9 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)entry->skb->data;
- struct ieee80211_rate *rate =
- ieee80211_get_tx_rate(rt2x00dev->hw, tx_info);
- const struct rt2x00_rate *hwrate;
+ struct ieee80211_tx_rate *txrate = &tx_info->control.rates[0];
+ struct ieee80211_rate *rate;
+ const struct rt2x00_rate *hwrate = NULL;
memset(txdesc, 0, sizeof(*txdesc));
@@ -365,42 +377,42 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
/*
* Beacons and probe responses require the tsf timestamp
- * to be inserted into the frame, except for a frame that has been injected
- * through a monitor interface. This latter is needed for testing a
- * monitor interface.
+ * to be inserted into the frame.
*/
- if ((ieee80211_is_beacon(hdr->frame_control) ||
- ieee80211_is_probe_resp(hdr->frame_control)) &&
- (!(tx_info->flags & IEEE80211_TX_CTL_INJECTED)))
+ if (ieee80211_is_beacon(hdr->frame_control) ||
+ ieee80211_is_probe_resp(hdr->frame_control))
__set_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags);
- /*
- * Determine with what IFS priority this frame should be send.
- * Set ifs to IFS_SIFS when the this is not the first fragment,
- * or this fragment came after RTS/CTS.
- */
if ((tx_info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) &&
- !test_bit(ENTRY_TXD_RTS_FRAME, &txdesc->flags)) {
+ !test_bit(ENTRY_TXD_RTS_FRAME, &txdesc->flags))
__set_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags);
- txdesc->ifs = IFS_BACKOFF;
- } else
- txdesc->ifs = IFS_SIFS;
/*
* Determine rate modulation.
*/
- hwrate = rt2x00_get_rate(rate->hw_value);
- txdesc->rate_mode = RATE_MODE_CCK;
- if (hwrate->flags & DEV_RATE_OFDM)
- txdesc->rate_mode = RATE_MODE_OFDM;
+ if (txrate->flags & IEEE80211_TX_RC_GREEN_FIELD)
+ txdesc->rate_mode = RATE_MODE_HT_GREENFIELD;
+ else if (txrate->flags & IEEE80211_TX_RC_MCS)
+ txdesc->rate_mode = RATE_MODE_HT_MIX;
+ else {
+ rate = ieee80211_get_tx_rate(rt2x00dev->hw, tx_info);
+ hwrate = rt2x00_get_rate(rate->hw_value);
+ if (hwrate->flags & DEV_RATE_OFDM)
+ txdesc->rate_mode = RATE_MODE_OFDM;
+ else
+ txdesc->rate_mode = RATE_MODE_CCK;
+ }
/*
* Apply TX descriptor handling by components
*/
rt2x00crypto_create_tx_descriptor(entry, txdesc);
- rt2x00ht_create_tx_descriptor(entry, txdesc, hwrate);
rt2x00queue_create_tx_descriptor_seq(entry, txdesc);
- rt2x00queue_create_tx_descriptor_plcp(entry, txdesc, hwrate);
+
+ if (test_bit(DRIVER_REQUIRE_HT_TX_DESC, &rt2x00dev->flags))
+ rt2x00ht_create_tx_descriptor(entry, txdesc, hwrate);
+ else
+ rt2x00queue_create_tx_descriptor_plcp(entry, txdesc, hwrate);
}
static int rt2x00queue_write_tx_data(struct queue_entry *entry,
@@ -566,13 +578,10 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb,
return 0;
}
-int rt2x00queue_update_beacon(struct rt2x00_dev *rt2x00dev,
- struct ieee80211_vif *vif,
- const bool enable_beacon)
+int rt2x00queue_clear_beacon(struct rt2x00_dev *rt2x00dev,
+ struct ieee80211_vif *vif)
{
struct rt2x00_intf *intf = vif_to_intf(vif);
- struct skb_frame_desc *skbdesc;
- struct txentry_desc txdesc;
if (unlikely(!intf->beacon))
return -ENOBUFS;
@@ -584,17 +593,36 @@ int rt2x00queue_update_beacon(struct rt2x00_dev *rt2x00dev,
*/
rt2x00queue_free_skb(intf->beacon);
- if (!enable_beacon) {
- rt2x00queue_stop_queue(intf->beacon->queue);
- mutex_unlock(&intf->beacon_skb_mutex);
- return 0;
- }
+ /*
+ * Clear beacon (single bssid devices don't need to clear the beacon
+ * since the beacon queue will get stopped anyway).
+ */
+ if (rt2x00dev->ops->lib->clear_beacon)
+ rt2x00dev->ops->lib->clear_beacon(intf->beacon);
+
+ mutex_unlock(&intf->beacon_skb_mutex);
+
+ return 0;
+}
+
+int rt2x00queue_update_beacon_locked(struct rt2x00_dev *rt2x00dev,
+ struct ieee80211_vif *vif)
+{
+ struct rt2x00_intf *intf = vif_to_intf(vif);
+ struct skb_frame_desc *skbdesc;
+ struct txentry_desc txdesc;
+
+ if (unlikely(!intf->beacon))
+ return -ENOBUFS;
+
+ /*
+ * Clean up the beacon skb.
+ */
+ rt2x00queue_free_skb(intf->beacon);
intf->beacon->skb = ieee80211_beacon_get(rt2x00dev->hw, vif);
- if (!intf->beacon->skb) {
- mutex_unlock(&intf->beacon_skb_mutex);
+ if (!intf->beacon->skb)
return -ENOMEM;
- }
/*
* Copy all TX descriptor information into txdesc,
@@ -611,13 +639,25 @@ int rt2x00queue_update_beacon(struct rt2x00_dev *rt2x00dev,
skbdesc->entry = intf->beacon;
/*
- * Send beacon to hardware and enable beacon genaration..
+ * Send beacon to hardware.
*/
rt2x00dev->ops->lib->write_beacon(intf->beacon, &txdesc);
+ return 0;
+
+}
+
+int rt2x00queue_update_beacon(struct rt2x00_dev *rt2x00dev,
+ struct ieee80211_vif *vif)
+{
+ struct rt2x00_intf *intf = vif_to_intf(vif);
+ int ret;
+
+ mutex_lock(&intf->beacon_skb_mutex);
+ ret = rt2x00queue_update_beacon_locked(rt2x00dev, vif);
mutex_unlock(&intf->beacon_skb_mutex);
- return 0;
+ return ret;
}
void rt2x00queue_for_each_entry(struct data_queue *queue,
@@ -665,29 +705,6 @@ void rt2x00queue_for_each_entry(struct data_queue *queue,
}
EXPORT_SYMBOL_GPL(rt2x00queue_for_each_entry);
-struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev,
- const enum data_queue_qid queue)
-{
- int atim = test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
-
- if (queue == QID_RX)
- return rt2x00dev->rx;
-
- if (queue < rt2x00dev->ops->tx_queues && rt2x00dev->tx)
- return &rt2x00dev->tx[queue];
-
- if (!rt2x00dev->bcn)
- return NULL;
-
- if (queue == QID_BEACON)
- return &rt2x00dev->bcn[0];
- else if (queue == QID_ATIM && atim)
- return &rt2x00dev->bcn[1];
-
- return NULL;
-}
-EXPORT_SYMBOL_GPL(rt2x00queue_get_queue);
-
struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue,
enum queue_index index)
{
@@ -885,7 +902,7 @@ void rt2x00queue_flush_queue(struct data_queue *queue, bool drop)
* The queue flush has failed...
*/
if (unlikely(!rt2x00queue_empty(queue)))
- WARNING(queue->rt2x00dev, "Queue %d failed to flush", queue->qid);
+ WARNING(queue->rt2x00dev, "Queue %d failed to flush\n", queue->qid);
/*
* Restore the queue to the previous status
@@ -1063,7 +1080,7 @@ int rt2x00queue_initialize(struct rt2x00_dev *rt2x00dev)
goto exit;
if (test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags)) {
- status = rt2x00queue_alloc_entries(&rt2x00dev->bcn[1],
+ status = rt2x00queue_alloc_entries(rt2x00dev->atim,
rt2x00dev->ops->atim);
if (status)
goto exit;
@@ -1137,6 +1154,7 @@ int rt2x00queue_allocate(struct rt2x00_dev *rt2x00dev)
rt2x00dev->rx = queue;
rt2x00dev->tx = &queue[1];
rt2x00dev->bcn = &queue[1 + rt2x00dev->ops->tx_queues];
+ rt2x00dev->atim = req_atim ? &queue[2 + rt2x00dev->ops->tx_queues] : NULL;
/*
* Initialize queue parameters.
@@ -1153,9 +1171,9 @@ int rt2x00queue_allocate(struct rt2x00_dev *rt2x00dev)
tx_queue_for_each(rt2x00dev, queue)
rt2x00queue_init(rt2x00dev, queue, qid++);
- rt2x00queue_init(rt2x00dev, &rt2x00dev->bcn[0], QID_BEACON);
+ rt2x00queue_init(rt2x00dev, rt2x00dev->bcn, QID_BEACON);
if (req_atim)
- rt2x00queue_init(rt2x00dev, &rt2x00dev->bcn[1], QID_ATIM);
+ rt2x00queue_init(rt2x00dev, rt2x00dev->atim, QID_ATIM);
return 0;
}