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[1/3] ath6kl: Fix WLAN tethering authentication problem.

Message ID 20160701161005.30341-2-plemagourou@aldebaran.com (mailing list archive)
State Changes Requested
Delegated to: Kalle Valo
Headers show

Commit Message

Pierre Le Magourou July 1, 2016, 4:10 p.m. UTC
When enabling WLAN tethering, a new AP is visible and a STA could
connect to it. When the STA tries to authenticate to the newly created
AP, the WPA authentication mechanism is stuck in the 1/4 msg of 4-Way
Handshake.

In ath6kl_rx(), the ath6kl_find_sta() function is looking for the
h_source field of the Ethernet frame header received by the STA. The
datap pointer that points to the Ethernet frame header is incorrect,
and was pointing at the wrong offset in the buffer.

This commit adds a pad_before_data_start offset to set the datap pointer
to the Ethernet frame header. datap->h_source parameter is now really
pointing to the source ethernet address and the authentication process
can continue.

Signed-off-by: Pierre Le Magourou <plemagourou@aldebaran.com>
---
 drivers/net/wireless/ath/ath6kl/txrx.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)
diff mbox

Patch

diff --git a/drivers/net/wireless/ath/ath6kl/txrx.c b/drivers/net/wireless/ath/ath6kl/txrx.c
index 40432fe..9df41d5 100644
--- a/drivers/net/wireless/ath/ath6kl/txrx.c
+++ b/drivers/net/wireless/ath/ath6kl/txrx.c
@@ -1401,6 +1401,10 @@  void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
 		return;
 	}
 
+	pad_before_data_start =
+		(le16_to_cpu(dhdr->info3) >> WMI_DATA_HDR_PAD_BEFORE_DATA_SHIFT)
+			& WMI_DATA_HDR_PAD_BEFORE_DATA_MASK;
+
 	/* Get the Power save state of the STA */
 	if (vif->nw_type == AP_NETWORK) {
 		meta_type = wmi_data_hdr_get_meta(dhdr);
@@ -1408,7 +1412,7 @@  void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
 		ps_state = !!((dhdr->info >> WMI_DATA_HDR_PS_SHIFT) &
 			      WMI_DATA_HDR_PS_MASK);
 
-		offset = sizeof(struct wmi_data_hdr);
+		offset = sizeof(struct wmi_data_hdr) + pad_before_data_start;
 		trig_state = !!(le16_to_cpu(dhdr->info3) & WMI_DATA_HDR_TRIG);
 
 		switch (meta_type) {
@@ -1523,9 +1527,6 @@  void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
 	seq_no = wmi_data_hdr_get_seqno(dhdr);
 	meta_type = wmi_data_hdr_get_meta(dhdr);
 	dot11_hdr = wmi_data_hdr_get_dot11(dhdr);
-	pad_before_data_start =
-		(le16_to_cpu(dhdr->info3) >> WMI_DATA_HDR_PAD_BEFORE_DATA_SHIFT)
-			& WMI_DATA_HDR_PAD_BEFORE_DATA_MASK;
 
 	skb_pull(skb, sizeof(struct wmi_data_hdr));