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Re: [PATCH v4 2/2] wifi: ath11k: add srng->lock for ath11k_hal_srng_* in monitor mode

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On 12/19/2024 4:35 PM, Kang Yang wrote:
ath11k_hal_srng_* should be used with srng->lock to protect srng data.

For ath11k_dp_rx_mon_dest_process() and ath11k_dp_full_mon_process_rx(),
they use ath11k_hal_srng_* for many times but never call srng->lock.

So when running (full) monitor mode, warning will occur:
RIP: 0010:ath11k_hal_srng_dst_peek+0x18/0x30 [ath11k]
Call Trace:
  ? ath11k_hal_srng_dst_peek+0x18/0x30 [ath11k]
  ath11k_dp_rx_process_mon_status+0xc45/0x1190 [ath11k]
  ? idr_alloc_u32+0x97/0xd0
  ath11k_dp_rx_process_mon_rings+0x32a/0x550 [ath11k]
  ath11k_dp_service_srng+0x289/0x5a0 [ath11k]
  ath11k_pcic_ext_grp_napi_poll+0x30/0xd0 [ath11k]
  __napi_poll+0x30/0x1f0
  net_rx_action+0x198/0x320
  __do_softirq+0xdd/0x319

So add srng->lock for them to avoid such warnings.

Inorder to fetch the srng->lock, should change srng's definition from
'void' to 'struct hal_srng'. And initialize them elsewhere to prevent
one line of code from being too long. This is consistent with other ring
process functions, such as ath11k_dp_process_rx().

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.30
Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1


Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@xxxxxxxxxxxxxxxx>




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