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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2cf8f350475sm32998385ad.70.2026.07.23.05.55.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Jul 2026 05:55:23 -0700 (PDT) From: Pardeep Kaur X-Google-Original-From: Pardeep Kaur , Pardeep Kaur Subject: [PATCH ath-next 8/8] wifi: ath12k: add WBM SW desc fallback counter Date: Thu, 23 Jul 2026 18:24:48 +0530 Message-Id: <20260723125448.922361-9-pardeep.kaur@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260723125448.922361-1-pardeep.kaur@oss.qualcomm.com> References: <20260723125448.922361-1-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-Authority-Analysis: v=2.4 cv=DtZmPm/+ c=1 sm=1 tr=0 ts=6a620f40 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=ZpdpYltYx_vBUK5n70dp:22 a=EUspDBNiAAAA:8 a=7LnAo4KMM85IVg6JStIA:9 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzIzMDEyNyBTYWx0ZWRfX92z04Apx1zdy Uz0T/964+hHi/YVElmsVx3vNS+7LEK0+p1TKm3iFy0bfpaULk4Wx6nKWM5hUB0Wwmc00wxxWVvo K5rnb6iE09obiq2skQBqzuOmLibssS4= X-Proofpoint-GUID: Uwu5aOPTPloOAT3-O80MNEIgPRptZmH5 X-Proofpoint-ORIG-GUID: Uwu5aOPTPloOAT3-O80MNEIgPRptZmH5 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzIzMDEyNyBTYWx0ZWRfX+BUCINX2T4G/ aGVzojxQAO22F/aI6XUDoeqPz5cWOFbbLW0tGOt5TEkVVjQargirdrBly/AH5TndxD3RVawwEir o5DR+0NOXo9ZvBc4s3GX9p1rrH33LZQRGMvnwMQqHUj6sW1uVZqWk2zECr9vB4i5fZI75ucI4XM I+DGCmwNRsGL94d5zIbtcICnHrHRhMxq9o+HqWBY7mcpc99pfGtn0vGxWtIL+I/VCr/B5TxOVYB ePrNhRH9r9iygEWgJlryjx/AnZWYdY6IJe6nuOKOx4ECfUer4Wt97keLGcNpEOF5QFt/VjTpak2 uceQK69TRX/1R7w3/N8XguOoq+laliPRY0ujMm3pXIbha7xn8KPu1xineU2UwrRiJpnGlASI7YS eq/fiR+3oZf6c2te35gVXxf65rFYX+k+VjjBxnj7F7EXtVFoOANeo7O1Rvl78MABsfVcvBjxgaz cfmUXitz35ULc1+Mo5Q== 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 spamscore=0 lowpriorityscore=0 impostorscore=0 clxscore=1015 bulkscore=0 adultscore=0 suspectscore=0 malwarescore=0 phishscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607230127 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 4176c837a6ef..534e7d13e66b 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: %u\n", diff --git a/drivers/net/wireless/ath/ath12k/dp.h b/drivers/net/wireless/ath/ath12k/dp.h index 298b65142a0e..af176ee7d89f 100644 --- a/drivers/net/wireless/ath/ath12k/dp.h +++ b/drivers/net/wireless/ath/ath12k/dp.h @@ -441,6 +441,7 @@ 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 33c4c89eefb5..9b6d04783c6b 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