@@ -2347,6 +2347,14 @@ int ath12k_dp_mon_srng_process(struct ath12k *ar, int *budget,
if (unlikely(!mon_dst_desc))
break;
+ /* In case of empty descriptor, the cookie in the ring descriptor
+ * is invalid. Therefore, this entry is skipped, and ring processing
+ * continues.
+ */
+ info0 = le32_to_cpu(mon_dst_desc->info0);
+ if (u32_get_bits(info0, HAL_MON_DEST_INFO0_EMPTY_DESC))
+ goto move_next;
+
cookie = le32_to_cpu(mon_dst_desc->cookie);
buf_id = u32_get_bits(cookie, DP_RXDMA_BUF_COOKIE_BUF_ID);
When monitor block in Hardware experiences internal backpressure, a ring entry with the EMPTY_DESC reason is received in the monitor destination ring descriptor. The cookie field for this corresponding entry is invalid. Currently driver attempts to process this cookie resulting in invalid buf_id warning logs flooding the console. To fix this, skip processing the destination descriptor when the EMPTY_DESCRIPTOR bit is set to true in ring descriptor, thereby avoiding the processing of junk cookies. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1 Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3 Signed-off-by: P Praneesh <quic_ppranees@quicinc.com> --- drivers/net/wireless/ath/ath12k/dp_mon.c | 8 ++++++++ 1 file changed, 8 insertions(+)