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Subject[PATCH 4.19 205/276] wil6210: fix return code of wmi_mgmt_tx and wmi_mgmt_tx_ext
Date
[ Upstream commit 49122ec42634f73babb1dc96f170023e5228d080 ]

The functions that send management TX frame have 3 possible
results: success and other side acknowledged receive (ACK=1),
success and other side did not acknowledge receive(ACK=0) and
failure to send the frame. The current implementation
incorrectly reports the ACK=0 case as failure.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/ath/wil6210/cfg80211.c | 5 +++++
drivers/net/wireless/ath/wil6210/wmi.c | 11 ++++++-----
2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/ath/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c
index 2daf33342b23d..1fc2bf66845c7 100644
--- a/drivers/net/wireless/ath/wil6210/cfg80211.c
+++ b/drivers/net/wireless/ath/wil6210/cfg80211.c
@@ -1131,7 +1131,12 @@ int wil_cfg80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
params->wait);

out:
+ /* when the sent packet was not acked by receiver(ACK=0), rc will
+ * be -EAGAIN. In this case this function needs to return success,
+ * the ACK=0 will be reflected in tx_status.
+ */
tx_status = (rc == 0);
+ rc = (rc == -EAGAIN) ? 0 : rc;
cfg80211_mgmt_tx_status(wdev, cookie ? *cookie : 0, buf, len,
tx_status, GFP_KERNEL);

diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c
index 42c02a20ec97c..6e3b3031f29bd 100644
--- a/drivers/net/wireless/ath/wil6210/wmi.c
+++ b/drivers/net/wireless/ath/wil6210/wmi.c
@@ -3107,8 +3107,9 @@ int wmi_mgmt_tx(struct wil6210_vif *vif, const u8 *buf, size_t len)
rc = wmi_call(wil, WMI_SW_TX_REQ_CMDID, vif->mid, cmd, total,
WMI_SW_TX_COMPLETE_EVENTID, &evt, sizeof(evt), 2000);
if (!rc && evt.evt.status != WMI_FW_STATUS_SUCCESS) {
- wil_err(wil, "mgmt_tx failed with status %d\n", evt.evt.status);
- rc = -EINVAL;
+ wil_dbg_wmi(wil, "mgmt_tx failed with status %d\n",
+ evt.evt.status);
+ rc = -EAGAIN;
}

kfree(cmd);
@@ -3160,9 +3161,9 @@ int wmi_mgmt_tx_ext(struct wil6210_vif *vif, const u8 *buf, size_t len,
rc = wmi_call(wil, WMI_SW_TX_REQ_EXT_CMDID, vif->mid, cmd, total,
WMI_SW_TX_COMPLETE_EVENTID, &evt, sizeof(evt), 2000);
if (!rc && evt.evt.status != WMI_FW_STATUS_SUCCESS) {
- wil_err(wil, "mgmt_tx_ext failed with status %d\n",
- evt.evt.status);
- rc = -EINVAL;
+ wil_dbg_wmi(wil, "mgmt_tx_ext failed with status %d\n",
+ evt.evt.status);
+ rc = -EAGAIN;
}

kfree(cmd);
--
2.20.1


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