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| author | Sujith Manoharan <Sujith.Manoharan@atheros.com> | 2011-04-13 11:26:39 +0530 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-04-13 15:24:30 -0400 |
| commit | 859c3ca1e4608615788dc6cbc199210fe4b5efa2 (patch) | |
| tree | 523b8939326f1c8605b037201142f73816cdee37 /drivers/net/wireless/ath/ath9k/htc.h | |
| parent | c4d04186c7023d54445b695da226b3e98e0a55f9 (diff) | |
| download | linux-859c3ca1e4608615788dc6cbc199210fe4b5efa2.tar.gz linux-859c3ca1e4608615788dc6cbc199210fe4b5efa2.tar.bz2 linux-859c3ca1e4608615788dc6cbc199210fe4b5efa2.zip | |
ath9k_htc: Add a timer to cleanup WMI events
Occasionally, a WMI event would arrive ahead of the TX
URB completion handler. Discarding these events would exhaust
the available TX slots, so handle them by running a timer
cleaning up such events. Also, timeout packets for which TX
completion events have not arrived.
Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/htc.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/htc.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h index b40753ca6706..b413b46119b0 100644 --- a/drivers/net/wireless/ath/ath9k/htc.h +++ b/drivers/net/wireless/ath/ath9k/htc.h @@ -262,7 +262,10 @@ struct ath9k_htc_rx { spinlock_t rxbuflock; }; -#define ATH9K_HTC_TX_RESERVE 10 +#define ATH9K_HTC_TX_CLEANUP_INTERVAL 50 /* ms */ +#define ATH9K_HTC_TX_TIMEOUT_INTERVAL 2500 /* ms */ +#define ATH9K_HTC_TX_RESERVE 10 +#define ATH9K_HTC_TX_TIMEOUT_COUNT 20 #define ATH9K_HTC_TX_THRESHOLD (MAX_TX_BUF_NUM - ATH9K_HTC_TX_RESERVE) #define ATH9K_HTC_OP_TX_QUEUES_STOP BIT(0) @@ -279,6 +282,7 @@ struct ath9k_htc_tx { struct sk_buff_head data_vo_queue; struct sk_buff_head tx_failed; DECLARE_BITMAP(tx_slot, MAX_TX_BUF_NUM); + struct timer_list cleanup_timer; spinlock_t tx_lock; }; @@ -287,6 +291,7 @@ struct ath9k_htc_tx_ctl { u8 epid; u8 txok; u8 sta_idx; + unsigned long timestamp; }; static inline struct ath9k_htc_tx_ctl *HTC_SKB_CB(struct sk_buff *skb) @@ -557,6 +562,7 @@ void ath9k_htc_tx_drain(struct ath9k_htc_priv *priv); void ath9k_htc_txstatus(struct ath9k_htc_priv *priv, void *wmi_event); void ath9k_htc_tx_failed(struct ath9k_htc_priv *priv); void ath9k_tx_failed_tasklet(unsigned long data); +void ath9k_htc_tx_cleanup_timer(unsigned long data); int ath9k_rx_init(struct ath9k_htc_priv *priv); void ath9k_rx_cleanup(struct ath9k_htc_priv *priv); |