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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3957f4c9918sm404261a91.0.2026.08.18.22.33.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Aug 2026 22:33:26 -0700 (PDT) From: Pardeep Kaur X-Google-Original-From: Pardeep Kaur , Pardeep Kaur Subject: [PATCH ath-next v4 8/8] wifi: ath12k: add WBM SW desc fallback counter Date: Wed, 19 Aug 2026 11:02:47 +0530 Message-Id: <20260819053247.1420393-9-pardeep.kaur@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260819053247.1420393-1-pardeep.kaur@oss.qualcomm.com> References: <20260819053247.1420393-1-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=PoGjqQM3 c=1 sm=1 tr=0 ts=6a854028 cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==: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=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODE5MDAzOSBTYWx0ZWRfXyjAVLINMbx5F FG7H8Vpcb0UapO8W2HHxXXip7q9xte8mRtEEKs1P9PvF67BMls7yvQ9HuaezmI/tGpXVdaV+HWB 7bmiy19ICYstPfz4u2JesI6I29DiVderc+hIJIch5fTRXSr6lPojhQcLrn4dhKV6qv2fzqkbksD KDpcJi9J08U2Jlb1324XDQN1MhMomGpbhC0OrliErd3xsc1WgdD1WNlZmvhvc3iTnDmeL3viKpx mZnnIRXJ/G+D68HLWy3v3V3+zs+cK479juP9cY4sXABza5x1ovUu91EjDOwiO2I2Poxqwtj5lEo rXhI5ymzJV9jlx0TOCER7oODBG0DOULdkDVU9pzNoTEuzp71TolmbAtL1Fzg4qNSzfcxaAEdp5A pjObDPLkIJNbF74NoBvsbM7cCrYDyHyUn2+0AIA7LPwk9qsm6FRKKEu3bAXUEM6QGbELzmHF10V YVKIndIBSUZbFrFeB8g== X-Proofpoint-Spam-Info: AW1haW4tMjYwODE5MDAzOSBTYWx0ZWRfX2gUNQecJpC35 5FWe88jFCbiperPx9tvLmpr2UEt8i1WDF1Qr1TnSPDTcmuJ40sIhqyrNRukFl9cP3f+DDAHIP7y 3yDjTcDVeozwuKRx8rU4CHRdT4CPlkc= X-Proofpoint-GUID: nd3USwKLgGZ8GMY2UH8uXkSoty1ubDOo X-Proofpoint-ORIG-GUID: nd3USwKLgGZ8GMY2UH8uXkSoty1ubDOo 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=2026-08-19_01,2026-08-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 bulkscore=0 spamscore=0 suspectscore=0 lowpriorityscore=0 malwarescore=0 impostorscore=0 phishscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608190039 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 5d6710f1160c..12791e267d1a 100644 --- a/drivers/net/wireless/ath/ath12k/debugfs.c +++ b/drivers/net/wireless/ath/ath12k/debugfs.c @@ -1132,6 +1132,10 @@ static ssize_t ath12k_debugfs_dump_device_dp_stats(struct file *file, len += scnprintf(buf + len, size - len, "\n"); } + 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, "\nHAL REO errors:\n"); for (i = 0; i < DP_REO_DST_RING_MAX; 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 5325d271fd6a..25fd8bf7858f 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_DROP_GET_SW_DESC]++; -- 2.34.1