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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2cf8f350475sm32998385ad.70.2026.07.23.05.54.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Jul 2026 05:55:00 -0700 (PDT) From: Pardeep Kaur X-Google-Original-From: Pardeep Kaur Subject: [PATCH ath-next 0/8] wifi: ath12k: extend device DP stats for TX and RX observability Date: Thu, 23 Jul 2026 18:24:40 +0530 Message-Id: <20260723125448.922361-1-pardeep.kaur@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: 3qQshKyrV1qZxB4YVz7WipDf30DvglsB X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzIzMDEyNyBTYWx0ZWRfX91SrnlxhqtEd 8wrWvtT1EAmFdGrZGf/ru0xCDlxOwRqGV7/UUlgHLeAZBe1ioOlohQOAPfrLoHl+wiXD+hLS/Os PVPEEaQic7eqqZK1ME9JcxMBcojx6VDpJaa3jLl1xcwADEzmyhreUGb7+5GB65jpgGYPIZqk/vi QaJSt8+rL9ix0DYi4gp98gW3vJ7TmIgXLmUQShfL7lvs/N1SNKTUBOjCjqiHdW9YpdoI11X0tUS 9BKvi07zZQz0185/vkhf52cZZY9ufF2vP1tfXbCZY2PVxMnpc2p9/HoSmeThrYQI6/WVvK0hs+d 3eCxJMevtrvUSMam15hlW7/t1YYPZxNVXgk8GFdafaP1p8lNQLso/yotZym4TP/N3Ewn2S9KPbo 38GO7L2kdwyLWlgaYwNXnQPwAJAo08aGYW++DXROkK3+9I+XFkKDrF5lZYu8YgGcuOC2xwt0jDA Bcz78rnhYNArxPB8lqQ== X-Authority-Analysis: v=2.4 cv=Een4hvmC c=1 sm=1 tr=0 ts=6a620f26 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=EUspDBNiAAAA:8 a=XRJRJbIxxDQRkIj6_doA:9 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzIzMDEyNyBTYWx0ZWRfX9C3iewDTSg+n ZksuAAMxjm17TKuZbCCIYquroCI3niKcq8mEiXEkCbfeihHYACtJM3e2/ZGR8oKFN5bQDmkS4k9 ctRaHuATT1HXlZOVrhzjrd5m+svNyWo= X-Proofpoint-GUID: 3qQshKyrV1qZxB4YVz7WipDf30DvglsB X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-23_03,2026-07-22_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 bulkscore=0 spamscore=0 priorityscore=1501 suspectscore=0 malwarescore=0 impostorscore=0 clxscore=1011 adultscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607230127 From: Pardeep Kaur 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 --- 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