[PATCH AUTOSEL 5.9 039/111] staging: wfx: fix handling of MMIC error

Sasha Levin sashal at kernel.org
Sun Oct 18 19:16:55 UTC 2020

From: Jérôme Pouiller <jerome.pouiller at silabs.com>

[ Upstream commit 8d350c14ee5eb62ecd40b0991248bfbce511954d ]

As expected, when the device detect a MMIC error, it returns a specific
status. However, it also strip IV from the frame (don't ask me why).

So, with the current code, mac80211 detects a corrupted frame and it
drops it before it handle the MMIC error. The expected behavior would be
to detect MMIC error then to renegotiate the EAP session.

So, this patch correctly informs mac80211 that IV is not available. So,
mac80211 correctly takes into account the MMIC error.

Signed-off-by: Jérôme Pouiller <jerome.pouiller at silabs.com>
Link: https://lore.kernel.org/r/20201007101943.749898-2-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal at kernel.org>
 drivers/staging/wfx/data_rx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/wfx/data_rx.c b/drivers/staging/wfx/data_rx.c
index 6fb0788807426..81c37ec0f2834 100644
--- a/drivers/staging/wfx/data_rx.c
+++ b/drivers/staging/wfx/data_rx.c
@@ -41,7 +41,7 @@ void wfx_rx_cb(struct wfx_vif *wvif,
 	memset(hdr, 0, sizeof(*hdr));
 	if (arg->status == HIF_STATUS_RX_FAIL_MIC)
-		hdr->flag |= RX_FLAG_MMIC_ERROR;
 	else if (arg->status)
 		goto drop;

More information about the devel mailing list