struct rt2x00_intf *intf = vif_to_intf(control->vif);
struct queue_entry_priv_pci_tx *priv_tx;
struct skb_frame_desc *skbdesc;
+ struct txentry_desc txdesc;
u32 reg;
if (unlikely(!intf->beacon))
return -ENOBUFS;
priv_tx = intf->beacon->priv_data;
+ /*
+ * Copy all TX descriptor information into txdesc,
+ * after that we are free to use the skb->cb array
+ * for our information.
+ */
+ intf->beacon->skb = skb;
+ rt2x00queue_create_tx_descriptor(intf->beacon, &txdesc, control);
+
/*
* Fill in skb descriptor
*/
* Write entire beacon with descriptor to register,
* and kick the beacon generator.
*/
- rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
memcpy(priv_tx->data, skb->data, skb->len);
+ rt2x00queue_write_tx_descriptor(intf->beacon, &txdesc);
rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, QID_BEACON);
return 0;
struct rt2x00_intf *intf = vif_to_intf(control->vif);
struct queue_entry_priv_pci_tx *priv_tx;
struct skb_frame_desc *skbdesc;
+ struct txentry_desc txdesc;
u32 reg;
if (unlikely(!intf->beacon))
priv_tx = intf->beacon->priv_data;
+ /*
+ * Copy all TX descriptor information into txdesc,
+ * after that we are free to use the skb->cb array
+ * for our information.
+ */
+ intf->beacon->skb = skb;
+ rt2x00queue_create_tx_descriptor(intf->beacon, &txdesc, control);
+
/*
* Fill in skb descriptor
*/
* Write entire beacon with descriptor to register,
* and kick the beacon generator.
*/
- rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
memcpy(priv_tx->data, skb->data, skb->len);
+ rt2x00queue_write_tx_descriptor(intf->beacon, &txdesc);
rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, QID_BEACON);
return 0;
struct rt2x00_intf *intf = vif_to_intf(control->vif);
struct queue_entry_priv_usb_bcn *priv_bcn;
struct skb_frame_desc *skbdesc;
+ struct txentry_desc txdesc;
int pipe = usb_sndbulkpipe(usb_dev, 1);
int length;
u16 reg;
priv_bcn = intf->beacon->priv_data;
+ /*
+ * Copy all TX descriptor information into txdesc,
+ * after that we are free to use the skb->cb array
+ * for our information.
+ */
+ intf->beacon->skb = skb;
+ rt2x00queue_create_tx_descriptor(intf->beacon, &txdesc, control);
+
/*
* Add the descriptor in front of the skb.
*/
rt2x00_set_field16(®, TXRX_CSR19_BEACON_GEN, 0);
rt2500usb_register_write(rt2x00dev, TXRX_CSR19, reg);
- rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
+ rt2x00queue_write_tx_descriptor(intf->beacon, &txdesc);
/*
* USB devices cannot blindly pass the skb->len as the
return ((size * 8 * 10) % rate);
}
+/**
+ * rt2x00queue_create_tx_descriptor - Create TX descriptor from mac80211 input
+ * @entry: The entry which will be used to transfer the TX frame.
+ * @txdesc: rt2x00 TX descriptor which will be initialized by this function.
+ * @control: mac80211 TX control structure from where we read the information.
+ *
+ * This function will initialize the &struct txentry_desc based on information
+ * from mac80211. This descriptor can then be used by rt2x00lib and the drivers
+ * to correctly initialize the hardware descriptor.
+ * Note that before calling this function the skb->cb array must be untouched
+ * by rt2x00lib. Only after this function completes will it be save to
+ * overwrite the skb->cb information.
+ * The reason for this is that mac80211 writes its own tx information into
+ * the skb->cb array, and this function will use that information to initialize
+ * the &struct txentry_desc structure.
+ */
+void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
+ struct txentry_desc *txdesc,
+ struct ieee80211_tx_control *control);
+
+/**
+ * rt2x00queue_write_tx_descriptor - Write TX descriptor to hardware
+ * @entry: The entry which will be used to transfer the TX frame.
+ * @txdesc: TX descriptor which will be used to write hardware descriptor
+ *
+ * This function will write a TX descriptor initialized by
+ * &rt2x00queue_create_tx_descriptor to the hardware. After this call
+ * has completed the frame is now owned by the hardware, the hardware
+ * queue will have automatically be kicked unless this frame was generated
+ * by rt2x00lib, in which case the frame is "special" and must be kicked
+ * by the caller.
+ */
+void rt2x00queue_write_tx_descriptor(struct queue_entry *entry,
+ struct txentry_desc *txdesc);
+
/**
* rt2x00queue_get_queue - Convert queue index to queue pointer
* @rt2x00dev: Pointer to &struct rt2x00_dev.
void rt2x00lib_rxdone(struct queue_entry *entry,
struct rxdone_entry_desc *rxdesc);
-/*
- * TX descriptor initializer
- */
-void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
- struct sk_buff *skb,
- struct ieee80211_tx_control *control);
-
/*
* mac80211 handlers.
*/
}
EXPORT_SYMBOL_GPL(rt2x00lib_rxdone);
-/*
- * TX descriptor initializer
- */
-void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
- struct sk_buff *skb,
- struct ieee80211_tx_control *control)
-{
- struct txentry_desc txdesc;
- struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skbdesc->data;
- const struct rt2x00_rate *rate;
- int tx_rate;
- int length;
- int duration;
- int residual;
- u16 frame_control;
- u16 seq_ctrl;
-
- memset(&txdesc, 0, sizeof(txdesc));
-
- txdesc.queue = skbdesc->entry->queue->qid;
- txdesc.cw_min = skbdesc->entry->queue->cw_min;
- txdesc.cw_max = skbdesc->entry->queue->cw_max;
- txdesc.aifs = skbdesc->entry->queue->aifs;
-
- /*
- * Read required fields from ieee80211 header.
- */
- frame_control = le16_to_cpu(hdr->frame_control);
- seq_ctrl = le16_to_cpu(hdr->seq_ctrl);
-
- tx_rate = control->tx_rate->hw_value;
-
- /*
- * Check whether this frame is to be acked
- */
- if (!(control->flags & IEEE80211_TXCTL_NO_ACK))
- __set_bit(ENTRY_TXD_ACK, &txdesc.flags);
-
- /*
- * Check if this is a RTS/CTS frame
- */
- if (is_rts_frame(frame_control) || is_cts_frame(frame_control)) {
- __set_bit(ENTRY_TXD_BURST, &txdesc.flags);
- if (is_rts_frame(frame_control)) {
- __set_bit(ENTRY_TXD_RTS_FRAME, &txdesc.flags);
- __set_bit(ENTRY_TXD_ACK, &txdesc.flags);
- } else
- __clear_bit(ENTRY_TXD_ACK, &txdesc.flags);
- if (control->rts_cts_rate)
- tx_rate = control->rts_cts_rate->hw_value;
- }
-
- /*
- * Determine retry information.
- */
- txdesc.retry_limit = control->retry_limit;
- if (control->flags & IEEE80211_TXCTL_LONG_RETRY_LIMIT)
- __set_bit(ENTRY_TXD_RETRY_MODE, &txdesc.flags);
-
- /*
- * Check if more fragments are pending
- */
- if (ieee80211_get_morefrag(hdr)) {
- __set_bit(ENTRY_TXD_BURST, &txdesc.flags);
- __set_bit(ENTRY_TXD_MORE_FRAG, &txdesc.flags);
- }
-
- /*
- * Beacons and probe responses require the tsf timestamp
- * to be inserted into the frame.
- */
- if (txdesc.queue == QID_BEACON || is_probe_resp(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 (test_bit(ENTRY_TXD_RTS_FRAME, &txdesc.flags)) {
- txdesc.ifs = IFS_SIFS;
- } else if (control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT) {
- __set_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc.flags);
- txdesc.ifs = IFS_BACKOFF;
- } else {
- txdesc.ifs = IFS_SIFS;
- }
-
- /*
- * PLCP setup
- * Length calculation depends on OFDM/CCK rate.
- */
- rate = rt2x00_get_rate(tx_rate);
- txdesc.signal = rate->plcp;
- txdesc.service = 0x04;
-
- length = skbdesc->data_len + FCS_LEN;
- if (rate->flags & DEV_RATE_OFDM) {
- __set_bit(ENTRY_TXD_OFDM_RATE, &txdesc.flags);
-
- txdesc.length_high = (length >> 6) & 0x3f;
- txdesc.length_low = length & 0x3f;
- } else {
- /*
- * Convert length to microseconds.
- */
- residual = get_duration_res(length, rate->bitrate);
- duration = get_duration(length, rate->bitrate);
-
- if (residual != 0) {
- duration++;
-
- /*
- * Check if we need to set the Length Extension
- */
- if (rate->bitrate == 110 && residual <= 30)
- txdesc.service |= 0x80;
- }
-
- txdesc.length_high = (duration >> 8) & 0xff;
- txdesc.length_low = duration & 0xff;
-
- /*
- * When preamble is enabled we should set the
- * preamble bit for the signal.
- */
- if (rt2x00_get_rate_preamble(tx_rate))
- txdesc.signal |= 0x08;
- }
-
- rt2x00dev->ops->lib->write_tx_desc(rt2x00dev, skb, &txdesc);
-
- /*
- * Update queue entry.
- */
- skbdesc->entry->skb = skb;
-
- /*
- * The frame has been completely initialized and ready
- * for sending to the device. The caller will push the
- * frame to the device, but we are going to push the
- * frame to debugfs here.
- */
- rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TX, skb);
-}
-EXPORT_SYMBOL_GPL(rt2x00lib_write_tx_desc);
-
/*
* Driver initialization handlers.
*/
struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX);
struct queue_entry_priv_pci_tx *priv_tx = entry->priv_data;
struct skb_frame_desc *skbdesc;
+ struct txentry_desc txdesc;
u32 word;
if (rt2x00queue_full(queue))
return -EINVAL;
}
+ /*
+ * Copy all TX descriptor information into txdesc,
+ * after that we are free to use the skb->cb array
+ * for our information.
+ */
+ entry->skb = skb;
+ rt2x00queue_create_tx_descriptor(entry, &txdesc, control);
+
/*
* Fill in skb descriptor
*/
memcpy(&priv_tx->control, control, sizeof(priv_tx->control));
memcpy(priv_tx->data, skb->data, skb->len);
- rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
+ rt2x00queue_write_tx_descriptor(entry, &txdesc);
rt2x00queue_index_inc(queue, Q_INDEX);
return 0;
#include "rt2x00.h"
#include "rt2x00lib.h"
+void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
+ struct txentry_desc *txdesc,
+ struct ieee80211_tx_control *control)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)entry->skb->data;
+ struct ieee80211_rate *rate = control->tx_rate;
+ const struct rt2x00_rate *hwrate;
+ unsigned int data_length;
+ unsigned int duration;
+ unsigned int residual;
+ u16 frame_control;
+
+ memset(txdesc, 0, sizeof(*txdesc));
+
+ /*
+ * Initialize information from queue
+ */
+ txdesc->queue = entry->queue->qid;
+ txdesc->cw_min = entry->queue->cw_min;
+ txdesc->cw_max = entry->queue->cw_max;
+ txdesc->aifs = entry->queue->aifs;
+
+ /* Data length should be extended with 4 bytes for CRC */
+ data_length = entry->skb->len + 4;
+
+ /*
+ * Read required fields from ieee80211 header.
+ */
+ frame_control = le16_to_cpu(hdr->frame_control);
+
+ /*
+ * Check whether this frame is to be acked.
+ */
+ if (!(control->flags & IEEE80211_TXCTL_NO_ACK))
+ __set_bit(ENTRY_TXD_ACK, &txdesc->flags);
+
+ /*
+ * Check if this is a RTS/CTS frame
+ */
+ if (is_rts_frame(frame_control) || is_cts_frame(frame_control)) {
+ __set_bit(ENTRY_TXD_BURST, &txdesc->flags);
+ if (is_rts_frame(frame_control)) {
+ __set_bit(ENTRY_TXD_RTS_FRAME, &txdesc->flags);
+ __set_bit(ENTRY_TXD_ACK, &txdesc->flags);
+ } else {
+ __set_bit(ENTRY_TXD_CTS_FRAME, &txdesc->flags);
+ __clear_bit(ENTRY_TXD_ACK, &txdesc->flags);
+ }
+ if (control->rts_cts_rate)
+ rate = control->rts_cts_rate;
+ }
+
+ /*
+ * Determine retry information.
+ */
+ txdesc->retry_limit = control->retry_limit;
+ if (control->flags & IEEE80211_TXCTL_LONG_RETRY_LIMIT)
+ __set_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags);
+
+ /*
+ * Check if more fragments are pending
+ */
+ if (ieee80211_get_morefrag(hdr)) {
+ __set_bit(ENTRY_TXD_BURST, &txdesc->flags);
+ __set_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags);
+ }
+
+ /*
+ * Beacons and probe responses require the tsf timestamp
+ * to be inserted into the frame.
+ */
+ if (txdesc->queue == QID_BEACON || is_probe_resp(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 (test_bit(ENTRY_TXD_RTS_FRAME, &txdesc->flags)) {
+ txdesc->ifs = IFS_SIFS;
+ } else if (control->flags & IEEE80211_TXCTL_FIRST_FRAGMENT) {
+ __set_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags);
+ txdesc->ifs = IFS_BACKOFF;
+ } else {
+ txdesc->ifs = IFS_SIFS;
+ }
+
+ /*
+ * PLCP setup
+ * Length calculation depends on OFDM/CCK rate.
+ */
+ hwrate = rt2x00_get_rate(rate->hw_value);
+ txdesc->signal = hwrate->plcp;
+ txdesc->service = 0x04;
+
+ if (hwrate->flags & DEV_RATE_OFDM) {
+ __set_bit(ENTRY_TXD_OFDM_RATE, &txdesc->flags);
+
+ txdesc->length_high = (data_length >> 6) & 0x3f;
+ txdesc->length_low = data_length & 0x3f;
+ } else {
+ /*
+ * Convert length to microseconds.
+ */
+ residual = get_duration_res(data_length, hwrate->bitrate);
+ duration = get_duration(data_length, hwrate->bitrate);
+
+ if (residual != 0) {
+ duration++;
+
+ /*
+ * Check if we need to set the Length Extension
+ */
+ if (hwrate->bitrate == 110 && residual <= 30)
+ txdesc->service |= 0x80;
+ }
+
+ txdesc->length_high = (duration >> 8) & 0xff;
+ txdesc->length_low = duration & 0xff;
+
+ /*
+ * When preamble is enabled we should set the
+ * preamble bit for the signal.
+ */
+ if (rt2x00_get_rate_preamble(rate->hw_value))
+ txdesc->signal |= 0x08;
+ }
+}
+EXPORT_SYMBOL_GPL(rt2x00queue_create_tx_descriptor);
+
+void rt2x00queue_write_tx_descriptor(struct queue_entry *entry,
+ struct txentry_desc *txdesc)
+{
+ struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
+ struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
+
+ rt2x00dev->ops->lib->write_tx_desc(rt2x00dev, entry->skb, txdesc);
+
+ /*
+ * All processing on the frame has been completed, this means
+ * it is now ready to be dumped to userspace through debugfs.
+ */
+ rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TX, entry->skb);
+
+ /*
+ * We are done writing the frame to the queue entry,
+ * if this entry is a RTS of CTS-to-self frame we are done,
+ * otherwise we need to kick the queue.
+ */
+ if (rt2x00dev->ops->lib->kick_tx_queue &&
+ !(skbdesc->flags & FRAME_DESC_DRIVER_GENERATED))
+ rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev,
+ entry->queue->qid);
+}
+EXPORT_SYMBOL_GPL(rt2x00queue_write_tx_descriptor);
+
struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev,
const enum data_queue_qid queue)
{
* enum txentry_desc_flags: Status flags for TX entry descriptor
*
* @ENTRY_TXD_RTS_FRAME: This frame is a RTS frame.
+ * @ENTRY_TXD_CTS_FRAME: This frame is a CTS-to-self frame.
* @ENTRY_TXD_OFDM_RATE: This frame is send out with an OFDM rate.
* @ENTRY_TXD_FIRST_FRAGMENT: This is the first frame.
* @ENTRY_TXD_MORE_FRAG: This frame is followed by another fragment.
*/
enum txentry_desc_flags {
ENTRY_TXD_RTS_FRAME,
+ ENTRY_TXD_CTS_FRAME,
ENTRY_TXD_OFDM_RATE,
ENTRY_TXD_FIRST_FRAGMENT,
ENTRY_TXD_MORE_FRAG,
struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX);
struct queue_entry_priv_usb_tx *priv_tx = entry->priv_data;
struct skb_frame_desc *skbdesc;
+ struct txentry_desc txdesc;
u32 length;
if (rt2x00queue_full(queue))
return -EINVAL;
}
+ /*
+ * Copy all TX descriptor information into txdesc,
+ * after that we are free to use the skb->cb array
+ * for our information.
+ */
+ entry->skb = skb;
+ rt2x00queue_create_tx_descriptor(entry, &txdesc, control);
+
/*
* Add the descriptor in front of the skb.
*/
skbdesc->entry = entry;
memcpy(&priv_tx->control, control, sizeof(priv_tx->control));
- rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
+ rt2x00queue_write_tx_descriptor(entry, &txdesc);
/*
* USB devices cannot blindly pass the skb->len as the
}
static int rt61pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct ieee80211_tx_control *control)
+ struct ieee80211_tx_control *control)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
struct rt2x00_intf *intf = vif_to_intf(control->vif);
struct queue_entry_priv_pci_tx *priv_tx;
struct skb_frame_desc *skbdesc;
+ struct txentry_desc txdesc;
unsigned int beacon_base;
u32 reg;
if (unlikely(!intf->beacon))
return -ENOBUFS;
+ /*
+ * Copy all TX descriptor information into txdesc,
+ * after that we are free to use the skb->cb array
+ * for our information.
+ */
+ intf->beacon->skb = skb;
+ rt2x00queue_create_tx_descriptor(intf->beacon, &txdesc, control);
+
priv_tx = intf->beacon->priv_data;
memset(priv_tx->desc, 0, intf->beacon->queue->desc_size);
* Write entire beacon with descriptor to register,
* and kick the beacon generator.
*/
- rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
+ rt2x00queue_write_tx_descriptor(intf->beacon, &txdesc);
beacon_base = HW_BEACON_OFFSET(intf->beacon->entry_idx);
rt2x00pci_register_multiwrite(rt2x00dev, beacon_base,
skbdesc->desc, skbdesc->desc_len);
struct rt2x00_dev *rt2x00dev = hw->priv;
struct rt2x00_intf *intf = vif_to_intf(control->vif);
struct skb_frame_desc *skbdesc;
+ struct txentry_desc txdesc;
unsigned int beacon_base;
u32 reg;
if (unlikely(!intf->beacon))
return -ENOBUFS;
+ /*
+ * Copy all TX descriptor information into txdesc,
+ * after that we are free to use the skb->cb array
+ * for our information.
+ */
+ intf->beacon->skb = skb;
+ rt2x00queue_create_tx_descriptor(intf->beacon, &txdesc, control);
+
/*
* Add the descriptor in front of the skb.
*/
* Write entire beacon with descriptor to register,
* and kick the beacon generator.
*/
- rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
+ rt2x00queue_write_tx_descriptor(intf->beacon, &txdesc);
beacon_base = HW_BEACON_OFFSET(intf->beacon->entry_idx);
rt2x00usb_vendor_request(rt2x00dev, USB_MULTI_WRITE,
USB_VENDOR_REQUEST_OUT, beacon_base, 0,
projects / linux-2.6 / commitdiff