2024-06-04 06:37:24

by Karthikeyan Periyasamy

[permalink] [raw]
Subject: [PATCH] wifi: ath12k: avoid unnecessary MSDU drop in the Rx error process

Currently, in the Rx error processing handler, once an MSDU drop is
detected, the subsequent MSDUs get unintentionally dropped due to the
previous drop flag being retained across all MSDU processing, leading
to the discarding of valid MSDUs. To resolve this issue, the drop flag
should be reset to false before processing each descriptor.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Signed-off-by: Karthikeyan Periyasamy <[email protected]>
---
drivers/net/wireless/ath/ath12k/dp_rx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath12k/dp_rx.c b/drivers/net/wireless/ath/ath12k/dp_rx.c
index cb1f308f096b..54aea3c22311 100644
--- a/drivers/net/wireless/ath/ath12k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath12k/dp_rx.c
@@ -3402,7 +3402,7 @@ int ath12k_dp_rx_process_err(struct ath12k_base *ab, struct napi_struct *napi,
struct ath12k *ar;
dma_addr_t paddr;
bool is_frag;
- bool drop = false;
+ bool drop;
int pdev_id;

tot_n_bufs_reaped = 0;
@@ -3420,7 +3420,9 @@ int ath12k_dp_rx_process_err(struct ath12k_base *ab, struct napi_struct *napi,

while (budget &&
(reo_desc = ath12k_hal_srng_dst_get_next_entry(ab, srng))) {
+ drop = false;
ab->soc_stats.err_ring_pkts++;
+
ret = ath12k_hal_desc_reo_parse_err(ab, reo_desc, &paddr,
&desc_bank);
if (ret) {

base-commit: a116bf2be795eb1db75fa6a48aa85c397be001a6
--
2.34.1



2024-06-04 21:00:45

by Jeff Johnson

[permalink] [raw]
Subject: Re: [PATCH] wifi: ath12k: avoid unnecessary MSDU drop in the Rx error process

On 6/3/2024 11:26 PM, Karthikeyan Periyasamy wrote:
> Currently, in the Rx error processing handler, once an MSDU drop is
> detected, the subsequent MSDUs get unintentionally dropped due to the
> previous drop flag being retained across all MSDU processing, leading
> to the discarding of valid MSDUs. To resolve this issue, the drop flag
> should be reset to false before processing each descriptor.
>
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
>
> Signed-off-by: Karthikeyan Periyasamy <[email protected]>
Acked-by: Jeff Johnson <[email protected]>


2024-06-11 18:44:45

by Kalle Valo

[permalink] [raw]
Subject: Re: [PATCH] wifi: ath12k: avoid unnecessary MSDU drop in the Rx error process

Karthikeyan Periyasamy <[email protected]> wrote:

> Currently, in the Rx error processing handler, once an MSDU drop is
> detected, the subsequent MSDUs get unintentionally dropped due to the
> previous drop flag being retained across all MSDU processing, leading
> to the discarding of valid MSDUs. To resolve this issue, the drop flag
> should be reset to false before processing each descriptor.
>
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
>
> Signed-off-by: Karthikeyan Periyasamy <[email protected]>
> Acked-by: Jeff Johnson <[email protected]>
> Signed-off-by: Kalle Valo <[email protected]>

Patch applied to ath-next branch of ath.git, thanks.

9e32058ae62f wifi: ath12k: avoid unnecessary MSDU drop in the Rx error process

--
https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches