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wifi: ath12k: track dropped MSDU buffer type packets in REO exception ring 

Add a counter "reo_excep_msdu_buf_type" in
ath12k_debugfs_dump_device_dp_stats() to account for packets dropped
due to unexpected MSDU buffer types in the RX error path. These
packets are discarded to prevent incorrect parsing and potential
kernel crashes. This helps in debugging and monitoring RX error
handling behavior.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1

Signed-off-by: Sarika Sharma <sarika.sharma@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250930091551.3305312-3-sarika.sharma@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
This commit is contained in:
Sarika Sharma 2025-09-30 14:45:51 +05:30 committed by Jeff Johnson
parent 36f9edbb9d
commit 43ba986e7a
3 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/ath/ath12k/core.h
View File

@ -963,6 +963,7 @@ struct ath12k_device_dp_stats {
u32 tx_wbm_rel_source[HAL_WBM_REL_SRC_MODULE_MAX];
u32 tx_enqueued[DP_TCL_NUM_RING_MAX];
u32 tx_completed[DP_TCL_NUM_RING_MAX];
u32 reo_excep_msdu_buf_type;
};
struct ath12k_reg_freq {

5
drivers/net/wireless/ath/ath12k/debugfs.c
View File

@ -1,7 +1,7 @@
// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
* Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
* Copyright (c) 2021-2025 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
*/
#include "core.h"
@ -1178,6 +1178,9 @@ 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, "\nREO excep MSDU buf type:%u\n",
device_stats->reo_excep_msdu_buf_type);
len += scnprintf(buf + len, size - len, "\nRx WBM REL SRC Errors:\n");
for (i = 0; i < HAL_WBM_REL_SRC_MODULE_MAX; i++) {

2
drivers/net/wireless/ath/ath12k/dp_rx.c
View File

@ -3790,6 +3790,8 @@ static int ath12k_dp_h_msdu_buffer_type(struct ath12k_base *ab,
struct sk_buff *msdu;
u64 desc_va;
ab->device_stats.reo_excep_msdu_buf_type++;
desc_va = (u64)le32_to_cpu(desc->buf_va_hi) << 32 |
le32_to_cpu(desc->buf_va_lo);
desc_info = (struct ath12k_rx_desc_info *)(uintptr_t)desc_va;