2021-09-02 05:35:40

by P Praneesh

[permalink] [raw]
Subject: [PATCH v3 04/12] ath11k: avoid additional access to ath11k_hal_srng_dst_num_free

In ath11k_dp_process_rx(), after processing rx_desc from
ath11k_hal_srng_dst_get_next_entry(), ath11k_hal_srng_dst_num_free()
is accessed everytime because of done flag is not set.

To avoid this additional access to ath11k_hal_srng_dst_num_free(),
increment total_msdu_reaped only when continuation is not set and
update done flag correspondingly.

Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.4.0.1.r2-00012-QCAHKSWPL_SILICONZ-1
Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01695-QCAHKSWPL_SILICONZ-1

Co-developed-by: Sriram R <[email protected]>
Signed-off-by: Sriram R <[email protected]>
Signed-off-by: Jouni Malinen <[email protected]>
Signed-off-by: P Praneesh <[email protected]>
---
drivers/net/wireless/ath/ath11k/dp_rx.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c
index b84c2db..994959b 100644
--- a/drivers/net/wireless/ath/ath11k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath11k/dp_rx.c
@@ -2623,7 +2623,6 @@ int ath11k_dp_process_rx(struct ath11k_base *ab, int ring_id,
DMA_FROM_DEVICE);

num_buffs_reaped[mac_id]++;
- total_msdu_reaped++;

push_reason = FIELD_GET(HAL_REO_DEST_RING_INFO0_PUSH_REASON,
desc.info0);
@@ -2646,10 +2645,15 @@ int ath11k_dp_process_rx(struct ath11k_base *ab, int ring_id,

__skb_queue_tail(&msdu_list, msdu);

- if (total_msdu_reaped >= quota && !rxcb->is_continuation) {
+ if (rxcb->is_continuation) {
+ done = false;
+ } else {
+ total_msdu_reaped++;
done = true;
- break;
}
+
+ if (total_msdu_reaped >= budget)
+ break;
}

/* Hw might have updated the head pointer after we cached it.
--
2.7.4