[RESEND PATCH 2/2] wifi: ath12k: enable threaded NAPI when DP IRQ affinity is unavailable

[Baochen Qiang]

On 5/19/2026 9:16 AM, Hangtian Zhu wrote:
> Determine threaded NAPI policy from runtime IRQ capability of the DP MSI
> IRQ.
> 
> If irq_can_set_affinity() reports that affinity cannot be set, enable
> threaded NAPI for DP interrupt groups so datapath processing is not
> constrained by a single-CPU softirq context.
> 
> On RB3Gen2, where IRQ affinity is unavailable in the effective IRQ path,
> EHT160 UDP downlink throughput improved from 802 Mbps to 2.58 Gbps after
> enabling threaded NAPI.
> 
> Tested-on: QCC2072 hw1.0 PCI WLAN.COL.1.0.c2-00074-QCACOLSWPL_V1_TO_SILICONZ-1
> 
> Signed-off-by: Hangtian Zhu <hangtian.zhu at oss.qualcomm.com>

Reviewed-by: Baochen Qiang <baochen.qiang at oss.qualcomm.com>