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ieee802154: fix skb get fc on big endian

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This patch fixes ieee802154_get_fc_from_skb function on big endian
machines. The function get_unaligned_le16 converts the byte order to
host byte order but we want to keep the byte order like in mac header.

Signed-off-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2016-07-06 23:32:27 +02:00 committed by Marcel Holtmann
parent 0ea0b9af9b
commit aaa7088eb2
1 changed files with 4 additions and 1 deletions
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5
include/net/mac802154.h
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@ -247,6 +247,8 @@ struct ieee802154_ops {
*/ */
static inline __le16 ieee802154_get_fc_from_skb(const struct sk_buff *skb) static inline __le16 ieee802154_get_fc_from_skb(const struct sk_buff *skb)
{ {
__le16 fc;
/* check if we can fc at skb_mac_header of sk buffer */ /* check if we can fc at skb_mac_header of sk buffer */
if (unlikely(!skb_mac_header_was_set(skb) || if (unlikely(!skb_mac_header_was_set(skb) ||
(skb_tail_pointer(skb) - skb_mac_header(skb)) < 2)) { (skb_tail_pointer(skb) - skb_mac_header(skb)) < 2)) {
@ -254,7 +256,8 @@ static inline __le16 ieee802154_get_fc_from_skb(const struct sk_buff *skb)
return cpu_to_le16(0); return cpu_to_le16(0);
} }
return get_unaligned_le16(skb_mac_header(skb)); memcpy(&fc, skb_mac_header(skb), IEEE802154_FC_LEN);
return fc;
} }
/** /**