43 lines
990 B
C
43 lines
990 B
C
/*
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* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "mt76x0.h"
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void mt76x0_remove_hdr_pad(struct sk_buff *skb)
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{
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int len = ieee80211_get_hdrlen_from_skb(skb);
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memmove(skb->data + 2, skb->data, len);
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skb_pull(skb, 2);
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}
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int mt76x0_insert_hdr_pad(struct sk_buff *skb)
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{
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int len = ieee80211_get_hdrlen_from_skb(skb);
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int ret;
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if (len % 4 == 0)
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return 0;
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ret = skb_cow(skb, 2);
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if (ret)
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return ret;
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skb_push(skb, 2);
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memmove(skb->data, skb->data + 2, len);
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skb->data[len] = 0;
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skb->data[len + 1] = 0;
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return 0;
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}
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