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| author | Michal Kazior <michal.kazior@tieto.com> | 2013-09-24 12:18:36 +0400 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2013-09-26 18:22:54 +0400 |
| commit | 6e712d427cb0542afdd5220edb6e4f4f8a5b952d (patch) | |
| tree | ab9d056def4b85a1f1214a7feb13ebd277d0af55 /drivers/net/wireless/ath/ath10k/htt.h | |
| parent | 4d316c79a5dcc13dea8110f0fcf295a17b4b625b (diff) | |
| download | linux-6e712d427cb0542afdd5220edb6e4f4f8a5b952d.tar.xz | |
ath10k: replenish HTT RX buffers in a tasklet
This starves FW RX ring buffer in case of
excessive RX. This prevents from CPU being
overwhelmed by RX indications/completions by
naturally forbiddin FW to submit more RX.
This fixes RX starvation on slow machines when
under heavy RX traffic.
kvalo: remove extra newline
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/htt.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/htt.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h index e090902cfd84..1a337e93b7e9 100644 --- a/drivers/net/wireless/ath/ath10k/htt.h +++ b/drivers/net/wireless/ath/ath10k/htt.h @@ -19,6 +19,7 @@ #define _HTT_H_ #include <linux/bug.h> +#include <linux/interrupt.h> #include "htc.h" #include "rx_desc.h" @@ -1268,6 +1269,7 @@ struct ath10k_htt { /* set if host-fw communication goes haywire * used to avoid further failures */ bool rx_confused; + struct tasklet_struct rx_replenish_task; }; #define RX_HTT_HDR_STATUS_LEN 64 @@ -1308,6 +1310,10 @@ struct htt_rx_desc { #define HTT_RX_BUF_SIZE 1920 #define HTT_RX_MSDU_SIZE (HTT_RX_BUF_SIZE - (int)sizeof(struct htt_rx_desc)) +/* Refill a bunch of RX buffers for each refill round so that FW/HW can handle + * aggregated traffic more nicely. */ +#define ATH10K_HTT_MAX_NUM_REFILL 16 + /* * DMA_MAP expects the buffer to be an integral number of cache lines. * Rather than checking the actual cache line size, this code makes a |