6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Balaji Pothunoori <quic_bpothuno@xxxxxxxxxxx>
[ Upstream commit 78e154d42f2c72905fe66a400847e1b2b101b7b2 ]
The following error messages were encountered while parsing fragmented RX
packets for WCN6750/WCN6855:
ath11k 17a10040.wifi: invalid return buffer manager 4
This issue arose due to a hardcoded check for HAL_RX_BUF_RBM_SW3_BM
introduced in 'commit 71c748b5e01e ("ath11k: Fix unexpected return buffer
manager error for QCA6390")'
For WCN6750 and WCN6855, the return buffer manager ID should be
HAL_RX_BUF_RBM_SW1_BM. The incorrect conditional check caused fragmented
packets to be dropped, resulting in the above error log.
Fix this by adding a check for HAL_RX_BUF_RBM_SW1_BM.
Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.2.0.c2-00258-QCAMSLSWPL-1
Tested-on: WCN6855 hw2.1 WLAN.HSP.1.1-04479-QCAHSPSWPL_V1_V2_SILICONZ_IOE-1
Fixes: 71c748b5e01e ("ath11k: Fix unexpected return buffer manager error for QCA6390")
Signed-off-by: Balaji Pothunoori <quic_bpothuno@xxxxxxxxxxx>
Acked-by: Jeff Johnson <quic_jjohnson@xxxxxxxxxxx>
Acked-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://patch.msgid.link/20241030114625.2416942-1-quic_bpothuno@xxxxxxxxxxx
Signed-off-by: Jeff Johnson <quic_jjohnson@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/ath/ath11k/dp_rx.c | 1 +
drivers/net/wireless/ath/ath11k/hal_rx.c | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c
index fb426195a3f01..4c70366ac56eb 100644
--- a/drivers/net/wireless/ath/ath11k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath11k/dp_rx.c
@@ -3811,6 +3811,7 @@ int ath11k_dp_process_rx_err(struct ath11k_base *ab, struct napi_struct *napi,
ath11k_hal_rx_msdu_link_info_get(link_desc_va, &num_msdus, msdu_cookies,
&rbm);
if (rbm != HAL_RX_BUF_RBM_WBM_IDLE_DESC_LIST &&
+ rbm != HAL_RX_BUF_RBM_SW1_BM &&
rbm != HAL_RX_BUF_RBM_SW3_BM) {
ab->soc_stats.invalid_rbm++;
ath11k_warn(ab, "invalid return buffer manager %d\n", rbm);
diff --git a/drivers/net/wireless/ath/ath11k/hal_rx.c b/drivers/net/wireless/ath/ath11k/hal_rx.c
index 363adac84a870..2bc95026335e3 100644
--- a/drivers/net/wireless/ath/ath11k/hal_rx.c
+++ b/drivers/net/wireless/ath/ath11k/hal_rx.c
@@ -372,7 +372,8 @@ int ath11k_hal_wbm_desc_parse_err(struct ath11k_base *ab, void *desc,
ret_buf_mgr = FIELD_GET(BUFFER_ADDR_INFO1_RET_BUF_MGR,
wbm_desc->buf_addr_info.info1);
- if (ret_buf_mgr != HAL_RX_BUF_RBM_SW3_BM) {
+ if (ret_buf_mgr != HAL_RX_BUF_RBM_SW1_BM &&
+ ret_buf_mgr != HAL_RX_BUF_RBM_SW3_BM) {
ab->soc_stats.invalid_rbm++;
return -EINVAL;
}
--
2.39.5
