[PATCH 0/4] wifi: ath12k: Add support to enable debugfs_htt_stats

[Jeff Johnson]

On 4/29/2024 10:38 AM, Ramya Gnanasekar wrote:
> Bring in the basic infrastructure necessary for enabling htt_stats via debugfs.
> Patch series bring support to request stats type to firmware,
> dump the stats and request to reset the stats from firmware.
> 
> Schema with one ath12k device:
> 
> ath12k
> `-- pci-0000:06:00.0
>     |-- mac0
>         `-- htt_stats
>         |-- htt_stats_type
>         |-- htt_stats_reset
> 
> Dinesh Karthikeyan (3):
>   wifi: ath12k: Add support to enable debugfs_htt_stats
>   wifi: ath12k: Add htt_stats_dump file ops support
>   wifi: ath12k: Add support to parse requested stats_type
> 
> Ramya Gnanasekar (1):
>   wifi: ath12k: Dump additional Tx PDEV HTT stats
> 
>  drivers/net/wireless/ath/ath12k/Makefile      |   2 +-
>  drivers/net/wireless/ath/ath12k/core.h        |  11 +
>  drivers/net/wireless/ath/ath12k/debugfs.c     |   3 +
>  .../wireless/ath/ath12k/debugfs_htt_stats.c   | 713 ++++++++++++++++++
>  .../wireless/ath/ath12k/debugfs_htt_stats.h   | 300 ++++++++
>  drivers/net/wireless/ath/ath12k/dp_rx.c       |  10 +-
>  drivers/net/wireless/ath/ath12k/dp_rx.h       |   4 +
>  7 files changed, 1038 insertions(+), 5 deletions(-)
>  create mode 100644 drivers/net/wireless/ath/ath12k/debugfs_htt_stats.c
>  create mode 100644 drivers/net/wireless/ath/ath12k/debugfs_htt_stats.h
> 
> 
> base-commit: 326f8f68f28b0b831233acfabffb486a5b0f4717

testing on my laptop

good news is the files are being populated:
# ls /sys/kernel/debug/ath12k/pci-0000\:03\:00.0/mac0/
dfs_simulate_radar  htt_stats  htt_stats_reset  htt_stats_type

bad news is:
# echo 1 > /sys/kernel/debug/ath12k/pci-0000\:03\:00.0/mac0/htt_stats_type
# cat /sys/kernel/debug/ath12k/pci-0000\:03\:00.0/mac0/htt_stats
cat: '/sys/kernel/debug/ath12k/pci-0000:03:00.0/mac0/htt_stats': Connection timed out

journalctl shows:
Apr 29 14:17:16 qca-HP-ZBook-14-G2 kernel: ath12k_pci 0000:03:00.0: htc rx completion ep 2 skb ffff8c4e50e5ed00
Apr 29 14:17:19 qca-HP-ZBook-14-G2 kernel: ath12k_pci 0000:03:00.0: stats request timed out

so something isn't right, at least for WCN7850

has this been tested with upstream kernel?