[PATCH ath-next] wifi: ath12k: Add memset and update default rate value in wmi tx completion

[Vasanthakumar Thiagarajan]

On 6/3/2025 12:05 PM, Sarika Sharma wrote:
> When both AP/STA and monitor interfaces are enabled, ieee80211_tx_status()
> is invoked from two paths: the TX completion handler for data frames
> and the WMI TX completion handler for management frames.
> In the data path, the skb->cb is properly zeroed using memset, but in
> the WMI path, this step is missing.
> 
> As a result, mac80211 encountered uninitialized (junk) values in
> skb->cb when generating the radiotap header for monitor mode, leading
> to invalid radiotap lengths.
> 
> Hence, explicitly zero the status field in the skb->cb using memset
> in WMI TX completion path to ensure consistent and correct behavior
> during WMI tx completion path.
> 
> Additionally, set info->status.rates[0].idx = -1 to indicate that
> no valid rate information is available, avoiding misinterpretation of
> garbage values.
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
> 
> Signed-off-by: Sarika Sharma <quic_sarishar at quicinc.com>

Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan at oss.qualcomm.com>