[PATCH ath-next 0/8] wifi: ath12k: extend device DP stats for TX and RX observability

[Pardeep Kaur]

From: Pardeep Kaur <pardeep.kaur at oss.qualcomm.com>

Extend ath12k device DP stats for TX and RX path observability.

Patch 1 fixes out-of-bounds array access on TX stats arrays
fw_tx_status[], tx_wbm_rel_source[] and tqm_rel_reason[] by adding
likely()/WARN_ON_ONCE() bounds checks before each increment.

Patch 2 renames the local variable wbm_status to htt_status in
ath12k_dp_tx_process_htt_tx_complete() to accurately reflect the field
origin, and simplifies ts.acked to use true directly.

Patch 3 adds a per-TCL-ring TX buffer allocation failure counter
txbuf_na[] to track how often ath12k_dp_tx_assign_buffer() fails, and
exposes it in device_dp_stats debugfs.

Patch 4 adds a write handler to device_dp_stats debugfs so that writing
'reset' clears all device DP stats counters without reloading the driver.

Patch 5 introduces a new dp_stats.h header with the
ath12k_wbm_err_drop_reason enum, adds per-drop-reason counters in the
WBM RX error path, and exposes them in device_dp_stats debugfs.

Patch 6 adds a per-REO-ring sent_to_stack[] counter to track successful
MSDU deliveries to the network stack, and exposes it in device_dp_stats
debugfs.

Patch 7 fixes the REO Rx Received debugfs output to use 0-based ring
indexing and lowercase "ring%d:" consistent with other ring counters.

Patch 8 adds a dedicated sw_desc_fallback counter to track how often the
WBM RX error path falls back to SW descriptor retrieval when HW CC is
not done, distinct from actual packet drops.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.6.r1-00402-QCAHKSWPL_SILICONZ-1

Signed-off-by: Pardeep Kaur <pardeep.kaur at oss.qualcomm.com>
---

Aniruddha Mishra (2):
  wifi: ath12k: add WBM RX error drop statistics
  wifi: ath12k: add WBM SW desc fallback counter

Hariharan Ramanathan (4):
  wifi: ath12k: rename wbm_status to htt_status in HTT TX completion
  wifi: ath12k: add TCL ring TX buffer allocation failure counter
  wifi: ath12k: add device DP stats reset support via debugfs
  wifi: ath12k: track per-ring RX sent-to-stack count

Pardeep Kaur (2):
  wifi: ath12k: fix out-of-bounds access on TX stats arrays
  wifi: ath12k: fix 1-based ring index in REO Rx Received debugfs output

 drivers/net/wireless/ath/ath12k/debugfs.c     | 74 ++++++++++++++++++-
 drivers/net/wireless/ath/ath12k/dp.h          | 14 +++-
 drivers/net/wireless/ath/ath12k/dp_stats.h    | 25 +++++++
 drivers/net/wireless/ath/ath12k/wifi7/dp_rx.c | 52 ++++++++++---
 drivers/net/wireless/ath/ath12k/wifi7/dp_tx.c | 29 +++++---
 .../net/wireless/ath/ath12k/wifi7/hal_rx.c    |  5 +-
 6 files changed, 173 insertions(+), 26 deletions(-)
 create mode 100644 drivers/net/wireless/ath/ath12k/dp_stats.h

base-commit: 32f39e331f889a0424f7a0a82893f628e2705727
--
2.34.1