From: Sujith Manoharan <c_manoha@xxxxxxxxxxxxxxxx>
The HTT RX ring is replenished with a maximum of 16 buffers,
but this might be insufficient when RX traffic is high.
Not having enough RX buffers throttles the FW, resulting
in low throughput.
This patch adds a module parameter to adjust the fill size
based on the platform/usage.
Signed-off-by: Sujith Manoharan <c_manoha@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/core.c | 3 +++
drivers/net/wireless/ath/ath10k/htt.h | 2 ++
drivers/net/wireless/ath/ath10k/htt_rx.c | 2 +-
3 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index 2d0671e..a74af21 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -33,14 +33,17 @@
unsigned int ath10k_debug_mask;
static bool uart_print;
static bool skip_otp;
+int htt_fill_size = ATH10K_HTT_MAX_NUM_REFILL;
module_param_named(debug_mask, ath10k_debug_mask, uint, 0644);
module_param(uart_print, bool, 0644);
module_param(skip_otp, bool, 0644);
+module_param(htt_fill_size, int, 0644);
MODULE_PARM_DESC(debug_mask, "Debugging mask");
MODULE_PARM_DESC(uart_print, "Uart target debugging");
MODULE_PARM_DESC(skip_otp, "Skip otp failure for calibration in testmode");
+MODULE_PARM_DESC(htt_fill_size, "HTT RX ring fill size");
static const struct ath10k_hw_params ath10k_hw_params_list[] = {
{
diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h
index 1bd5545..1aa5db1 100644
--- a/drivers/net/wireless/ath/ath10k/htt.h
+++ b/drivers/net/wireless/ath/ath10k/htt.h
@@ -26,6 +26,8 @@
#include "htc.h"
#include "rx_desc.h"
+extern int htt_fill_size;
+
enum htt_dbg_stats_type {
HTT_DBG_STATS_WAL_PDEV_TXRX = 1 << 0,
HTT_DBG_STATS_RX_REORDER = 1 << 1,
diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index 9c782a4..1440b0e 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -128,7 +128,7 @@ static void ath10k_htt_rx_msdu_buff_replenish(struct ath10k_htt *htt)
* improves the avarage and stability. */
spin_lock_bh(&htt->rx_ring.lock);
num_deficit = htt->rx_ring.fill_level - htt->rx_ring.fill_cnt;
- num_to_fill = min(ATH10K_HTT_MAX_NUM_REFILL, num_deficit);
+ num_to_fill = min(htt_fill_size, num_deficit);
num_deficit -= num_to_fill;
ret = ath10k_htt_rx_ring_fill_n(htt, num_to_fill);
if (ret == -ENOMEM) {
--
2.2.1
--
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