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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00queue.h')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00queue.h74
1 files changed, 38 insertions, 36 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.h b/drivers/net/wireless/rt2x00/rt2x00queue.h
index d81d85f34866..fab8e2687f29 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.h
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.h
@@ -43,28 +43,12 @@
#define AGGREGATION_SIZE 3840
/**
- * DOC: Number of entries per queue
- *
- * Under normal load without fragmentation, 12 entries are sufficient
- * without the queue being filled up to the maximum. When using fragmentation
- * and the queue threshold code, we need to add some additional margins to
- * make sure the queue will never (or only under extreme load) fill up
- * completely.
- * Since we don't use preallocated DMA, having a large number of queue entries
- * will have minimal impact on the memory requirements for the queue.
- */
-#define RX_ENTRIES 24
-#define TX_ENTRIES 24
-#define BEACON_ENTRIES 1
-#define ATIM_ENTRIES 8
-
-/**
* enum data_queue_qid: Queue identification
*
+ * @QID_AC_VO: AC VO queue
+ * @QID_AC_VI: AC VI queue
* @QID_AC_BE: AC BE queue
* @QID_AC_BK: AC BK queue
- * @QID_AC_VI: AC VI queue
- * @QID_AC_VO: AC VO queue
* @QID_HCCA: HCCA queue
* @QID_MGMT: MGMT queue (prio queue)
* @QID_RX: RX queue
@@ -73,10 +57,10 @@
* @QID_ATIM: Atim queue (value unspeficied, don't send it to device)
*/
enum data_queue_qid {
- QID_AC_BE = 0,
- QID_AC_BK = 1,
- QID_AC_VI = 2,
- QID_AC_VO = 3,
+ QID_AC_VO = 0,
+ QID_AC_VI = 1,
+ QID_AC_BE = 2,
+ QID_AC_BK = 3,
QID_HCCA = 4,
QID_MGMT = 13,
QID_RX = 14,
@@ -296,7 +280,6 @@ enum txentry_desc_flags {
* Summary of information for the frame descriptor before sending a TX frame.
*
* @flags: Descriptor flags (See &enum queue_entry_flags).
- * @qid: Queue identification (See &enum data_queue_qid).
* @length: Length of the entire frame.
* @header_length: Length of 802.11 header.
* @length_high: PLCP length high word.
@@ -309,11 +292,8 @@ enum txentry_desc_flags {
* @rate_mode: Rate mode (See @enum rate_modulation).
* @mpdu_density: MDPU density.
* @retry_limit: Max number of retries.
- * @aifs: AIFS value.
* @ifs: IFS value.
* @txop: IFS value for 11n capable chips.
- * @cw_min: cwmin value.
- * @cw_max: cwmax value.
* @cipher: Cipher type used for encryption.
* @key_idx: Key index used for encryption.
* @iv_offset: Position where IV should be inserted by hardware.
@@ -322,8 +302,6 @@ enum txentry_desc_flags {
struct txentry_desc {
unsigned long flags;
- enum data_queue_qid qid;
-
u16 length;
u16 header_length;
@@ -339,11 +317,8 @@ struct txentry_desc {
u16 mpdu_density;
short retry_limit;
- short aifs;
short ifs;
short txop;
- short cw_min;
- short cw_max;
enum cipher cipher;
u16 key_idx;
@@ -365,12 +340,16 @@ struct txentry_desc {
* @ENTRY_DATA_IO_FAILED: Hardware indicated that an IO error occured
* while transfering the data to the hardware. No TX status report will
* be expected from the hardware.
+ * @ENTRY_DATA_STATUS_PENDING: The entry has been send to the device and
+ * returned. It is now waiting for the status reporting before the
+ * entry can be reused again.
*/
enum queue_entry_flags {
ENTRY_BCN_ASSIGNED,
ENTRY_OWNER_DEVICE_DATA,
ENTRY_DATA_PENDING,
- ENTRY_DATA_IO_FAILED
+ ENTRY_DATA_IO_FAILED,
+ ENTRY_DATA_STATUS_PENDING,
};
/**
@@ -417,13 +396,33 @@ enum queue_index {
};
/**
+ * enum data_queue_flags: Status flags for data queues
+ *
+ * @QUEUE_STARTED: The queue has been started. Fox RX queues this means the
+ * device might be DMA'ing skbuffers. TX queues will accept skbuffers to
+ * be transmitted and beacon queues will start beaconing the configured
+ * beacons.
+ * @QUEUE_PAUSED: The queue has been started but is currently paused.
+ * When this bit is set, the queue has been stopped in mac80211,
+ * preventing new frames to be enqueued. However, a few frames
+ * might still appear shortly after the pausing...
+ */
+enum data_queue_flags {
+ QUEUE_STARTED,
+ QUEUE_PAUSED,
+};
+
+/**
* struct data_queue: Data queue
*
* @rt2x00dev: Pointer to main &struct rt2x00dev where this queue belongs to.
* @entries: Base address of the &struct queue_entry which are
* part of this queue.
* @qid: The queue identification, see &enum data_queue_qid.
- * @lock: Spinlock to protect index handling. Whenever @index, @index_done or
+ * @flags: Entry flags, see &enum queue_entry_flags.
+ * @status_lock: The mutex for protecting the start/stop/flush
+ * handling on this queue.
+ * @index_lock: Spinlock to protect index handling. Whenever @index, @index_done or
* @index_crypt needs to be changed this lock should be grabbed to prevent
* index corruption due to concurrency.
* @count: Number of frames handled in the queue.
@@ -446,8 +445,11 @@ struct data_queue {
struct queue_entry *entries;
enum data_queue_qid qid;
+ unsigned long flags;
+
+ struct mutex status_lock;
+ spinlock_t index_lock;
- spinlock_t lock;
unsigned int count;
unsigned short limit;
unsigned short threshold;
@@ -618,10 +620,10 @@ static inline int rt2x00queue_threshold(struct data_queue *queue)
}
/**
- * rt2x00queue_timeout - Check if a timeout occured for STATUS reorts
+ * rt2x00queue_status_timeout - Check if a timeout occured for STATUS reports
* @queue: Queue to check.
*/
-static inline int rt2x00queue_timeout(struct data_queue *queue)
+static inline int rt2x00queue_status_timeout(struct data_queue *queue)
{
return time_after(queue->last_action[Q_INDEX_DMA_DONE],
queue->last_action[Q_INDEX_DONE] + (HZ / 10));