From aaa7088eb29a0ffe6cf8d8a443695df41e5a62f3 Mon Sep 17 00:00:00 2001 From: Alexander Aring Date: Wed, 6 Jul 2016 23:32:27 +0200 Subject: [PATCH] ieee802154: fix skb get fc on big endian 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 Signed-off-by: Marcel Holtmann --- include/net/mac802154.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/include/net/mac802154.h b/include/net/mac802154.h index d757edd0b0b7..bb7bfecc5ab3 100644 --- a/include/net/mac802154.h +++ b/include/net/mac802154.h @@ -247,6 +247,8 @@ struct ieee802154_ops { */ 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 */ if (unlikely(!skb_mac_header_was_set(skb) || (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 get_unaligned_le16(skb_mac_header(skb)); + memcpy(&fc, skb_mac_header(skb), IEEE802154_FC_LEN); + return fc; } /** -- 2.30.2