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ath6kl: add rx data padding support

Needed when using USB.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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commit 8bd5bca821f3284ebe39ffcfcc6c62b58ab54240 1 parent cfc10f2
@kvalo kvalo authored
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7 drivers/net/wireless/ath/ath6kl/txrx.c
@@ -1287,6 +1287,7 @@ void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
struct wmi_data_hdr *dhdr;
int min_hdr_len;
u8 meta_type, dot11_hdr = 0;
+ u8 pad_before_data_start;
int status = packet->status;
enum htc_endpoint_id ept = packet->endpoint;
bool is_amsdu, prev_ps, ps_state = false;
@@ -1498,6 +1499,10 @@ 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));
switch (meta_type) {
@@ -1516,6 +1521,8 @@ void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
break;
}
+ skb_pull(skb, pad_before_data_start);
+
if (dot11_hdr)
status = ath6kl_wmi_dot11_hdr_remove(ar->wmi, skb);
else if (!is_amsdu)
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3  drivers/net/wireless/ath/ath6kl/wmi.h
@@ -182,6 +182,9 @@ enum wmi_data_hdr_flags {
#define WMI_DATA_HDR_META_MASK 0x7
#define WMI_DATA_HDR_META_SHIFT 13
+#define WMI_DATA_HDR_PAD_BEFORE_DATA_MASK 0xFF
+#define WMI_DATA_HDR_PAD_BEFORE_DATA_SHIFT 0x8
+
/* Macros for operating on WMI_DATA_HDR (info3) field */
#define WMI_DATA_HDR_IF_IDX_MASK 0xF
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