diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00queue.h')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00queue.h | 74 |
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)); |