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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3926254ee45sm12797317a91.2.2026.08.10.07.45.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Aug 2026 07:45:20 -0700 (PDT) From: Pardeep Kaur X-Google-Original-From: Pardeep Kaur , Pardeep Kaur Subject: [PATCH ath-next v3 8/8] wifi: ath12k: add WBM SW desc fallback counter Date: Mon, 10 Aug 2026 20:14:44 +0530 Message-Id: <20260810144444.2033607-9-pardeep.kaur@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260810144444.2033607-1-pardeep.kaur@oss.qualcomm.com> References: <20260810144444.2033607-1-pardeep.kaur@oss.qualcomm.com> 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: 9NgOQsIJV578oGS3yU8JmCLZI_Itk1Qk X-Authority-Analysis: v=2.4 cv=R4cz39RX c=1 sm=1 tr=0 ts=6a79e402 cx=c_pps a=UNFcQwm+pnOIJct1K4W+Mw==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=EUspDBNiAAAA:8 a=7LnAo4KMM85IVg6JStIA:9 a=uKXjsCUrEbL0IQVhDsJ9:22 X-Proofpoint-GUID: 9NgOQsIJV578oGS3yU8JmCLZI_Itk1Qk X-Proofpoint-Spam-Info: AW1haW4tMjYwODEwMDEyNiBTYWx0ZWRfX6RcPMmiXaVxz ZLj78LNF8UMJc1oYZdJ9vvyZfkrX/JI/E4rj3Cm2zl+w246TttkjgHYopft/+7r+NYp3Wi8VLGf W7c0ywZ8qG82K5KzdNYj3AxDD4udgwk= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEwMDEyNiBTYWx0ZWRfXxoXtnQ/rwAk6 KBbhJPhq36Iy/LmYub4iPxRFfQVxSn6yBbaoWlZ8WlE5dXYD62JgkvZu/4dKdWZuCnrMhMDBYhR md4geXRJ0dOTNAxu/BiQMJDgL/lM2eFWJbRpeX9eieFhBpE5owlWipC0SZHg9JJtJM/FDjtS9M6 Qo11RoqCQeGictwGtXutGgjBm5zJ40vPZQ/+aIoHfXqHQsuxDrPyWvicLyGj6OUoex2+gemfMmK I6vZvRbfQHWREaxTLGREs31yr4vZz2aKAFC9D0b7XTA1yAQVtx6oJsvGggGqdiy9ZIN7G19Qrqb sARSPLZH+STKiKKWE3j32zrzbgrtvhwFUSDLQdR5s75zPiJgArwQED2iMN5lhFtk0+gPv+4u9eC VpP/H2NuE1WFW/jNricwIAvKS+pfzSO/HfLeKibjItObxMoYGjYxVvdfG8T0bVR/F9Y1ApgulOi XLrioIbadjzybEfdXzg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-10_03,2026-08-07_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 adultscore=0 malwarescore=0 priorityscore=1501 bulkscore=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608100126 From: Aniruddha Mishra When HW CC is not done, the WBM RX error path falls back to cookie-based descriptor retrieval via ath12k_dp_get_rx_desc(). This fallback path is taken before knowing whether the retrieval will succeed, so it is not a drop event and should not be counted in the drop[] array. Add a dedicated sw_desc_fallback counter in ath12k_device_dp_rx_wbm_err_stats to track how often the HW CC fallback path is taken, distinct from actual packet drops. Expose the counter in the device_dp_stats debugfs file as a separate line. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.6.r1-00402-QCAHKSWPL_SILICONZ-1 Signed-off-by: Aniruddha Mishra Co-developed-by: Pardeep Kaur Signed-off-by: Pardeep Kaur --- drivers/net/wireless/ath/ath12k/debugfs.c | 4 ++++ drivers/net/wireless/ath/ath12k/dp.h | 1 + drivers/net/wireless/ath/ath12k/wifi7/dp_rx.c | 1 + 3 files changed, 6 insertions(+) diff --git a/drivers/net/wireless/ath/ath12k/debugfs.c b/drivers/net/wireless/ath/ath12k/debugfs.c index fe513b3489bc..d2d89a7e340d 100644 --- a/drivers/net/wireless/ath/ath12k/debugfs.c +++ b/drivers/net/wireless/ath/ath12k/debugfs.c @@ -1122,6 +1122,10 @@ static ssize_t ath12k_debugfs_dump_device_dp_stats(struct file *file, len += scnprintf(buf + len, size - len, "%s: %u\n", wbm_rx_drop[i], device_stats->wbm_err.drop[i]); + len += scnprintf(buf + len, size - len, + "\nWBM SW desc fallback (HW CC not done): %u\n", + device_stats->wbm_err.sw_desc_fallback); + len += scnprintf(buf + len, size - len, "\nREO sent to stack\n"); for (i = 0; i < DP_REO_DST_RING_MAX; i++) { len += scnprintf(buf + len, size - len, "ring%d:", i); diff --git a/drivers/net/wireless/ath/ath12k/dp.h b/drivers/net/wireless/ath/ath12k/dp.h index 5cfe2096c633..289aede6dabb 100644 --- a/drivers/net/wireless/ath/ath12k/dp.h +++ b/drivers/net/wireless/ath/ath12k/dp.h @@ -442,6 +442,7 @@ struct ath12k_device_dp_rx_wbm_err_stats { u32 rxdma_error[HAL_REO_ENTR_RING_RXDMA_ECODE_MAX]; u32 reo_error[HAL_REO_DEST_RING_ERROR_CODE_MAX]; u32 drop[WBM_ERR_DROP_MAX]; + u32 sw_desc_fallback; }; struct ath12k_device_dp_stats { diff --git a/drivers/net/wireless/ath/ath12k/wifi7/dp_rx.c b/drivers/net/wireless/ath/ath12k/wifi7/dp_rx.c index 60489cfd4e54..d96d8301565c 100644 --- a/drivers/net/wireless/ath/ath12k/wifi7/dp_rx.c +++ b/drivers/net/wireless/ath/ath12k/wifi7/dp_rx.c @@ -1968,6 +1968,7 @@ int ath12k_wifi7_dp_rx_process_wbm_err(struct ath12k_dp *dp, /* retry manual desc retrieval if hw cc is not done */ if (!desc_info) { + dp->device_stats.wbm_err.sw_desc_fallback++; desc_info = ath12k_dp_get_rx_desc(dp, err_info.cookie); if (!desc_info) { dp->device_stats.wbm_err.drop[WBM_ERR_GET_SW_DESC]++; -- 2.34.1