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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: 4OyNjGXWxMCFz-I8T__KxC8Mk0youHAO X-Authority-Analysis: v=2.4 cv=A8Rc+aWG c=1 sm=1 tr=0 ts=6a42056d cx=c_pps a=PfFC4Oe2JQzmKTvty2cRDw==:117 a=j4ogTh8yFefVWWEFDRgCtg==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=EUspDBNiAAAA:8 a=w9BFTkqvzr3O3xFJ_nYA:9 a=QEXdDO2ut3YA:10 a=6Ab_bkdmUrQuMsNx7PHu:22 X-Proofpoint-ORIG-GUID: 4OyNjGXWxMCFz-I8T__KxC8Mk0youHAO X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjI5MDA0NiBTYWx0ZWRfXyApfXe2K6bu1 cUgzHq2gNM3kVxuLhOtSVb5kw29nOxIiIgwV4XkCGf1sE4sGeE7P3EeaGNt3lBZqpAMsRVqGkqz bX9+esb7wUv4DmUh6UwE0t4eq8gMyvjxr0f4nEZyMEv+EmjKske/mK/hh8/YsmWHa8nnIznYwOX yGkNRzr5fOYHfX9n/GEXsKcsBsaLVcXYtHuweGkF0ixGOHHrMZrRuTbYV7bKo/vyN1ktmHvbBCc 0IimV6iq7thDljUEjcZHqtuYIO0zq7h45vqR9/1bAqkuVeFAu75iEKT2pcXs/uhKoWS+iNpTe2b K99edpgEUDTnU4+RzABM4rchQVg8lg2FNrnoN9yxeaHkM4zTJ3kK77sTIrgoHQUan1Nsa1vVSF5 4Wl7C94cBVsrGGyuBQlm6upgMzB2EFfsnzqy9CJoLO5GUbLdevKFdKmWeCntiZoIQoqEmlLnSN/ b15gFSG+KPjgIUt5Tkg== X-Proofpoint-Spam-Info: AW1haW4tMjYwNjI5MDA0NiBTYWx0ZWRfX1J42DIShRRRv m36kWefEq4NF75zPHS6pfe7qcc8EOQbzFiap8RWIhhtHGIgjIqGsUuu6U2ICB0AvRwN95tSg3Yw Tr64BgqJoOKwP3v0v2q8rxWL+QEUIrs= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-29_01,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 clxscore=1015 impostorscore=0 priorityscore=1501 suspectscore=0 malwarescore=0 phishscore=0 spamscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606290046 On 6/10/2026 8:43 AM, Yingying Tang wrote: > For WCN7850, MAC buffer ring size is updated to 2048 in > 955df16f2a4c3 ("wifi: ath12k: change MAC buffer ring size to 2048") > to increase peak throughput. > > But during the RX process, a phenomenon can still be observed where > the throughput drops by about 30% from its peak value and then recovers, > and this behavior repeats during RX. > > After increasing MAC buffer ring size to 4096, the data rate drop has > gone. > > Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00302-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.115823.3 > > Signed-off-by: Yingying Tang > --- > drivers/net/wireless/ath/ath12k/dp.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/wireless/ath/ath12k/dp.h b/drivers/net/wireless/ath/ath12k/dp.h > index f8cfc7bb29dd..6596089d4168 100644 > --- a/drivers/net/wireless/ath/ath12k/dp.h > +++ b/drivers/net/wireless/ath/ath12k/dp.h > @@ -205,7 +205,7 @@ struct ath12k_pdev_dp { > #define DP_REO_CMD_RING_SIZE 256 > #define DP_REO_STATUS_RING_SIZE 2048 > #define DP_RXDMA_BUF_RING_SIZE 4096 > -#define DP_RX_MAC_BUF_RING_SIZE 2048 > +#define DP_RX_MAC_BUF_RING_SIZE 4096 > #define DP_RXDMA_REFILL_RING_SIZE 2048 > #define DP_RXDMA_ERR_DST_RING_SIZE 1024 > #define DP_RXDMA_MON_STATUS_RING_SIZE 1024 Reviewed-by: Rameshkumar Sundaram