Release 4.11 drivers/net/wireless/mediatek/mt7601u/util.c

/*
 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include "mt7601u.h"



void mt76_remove_hdr_pad(struct sk_buff *skb)
{
	int len = ieee80211_get_hdrlen_from_skb(skb);

	memmove(skb->data + 2, skb->data, len);
	skb_pull(skb, 2);
}

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int mt76_insert_hdr_pad(struct sk_buff *skb)
{
	int len = ieee80211_get_hdrlen_from_skb(skb);
	int ret;

	if (len % 4 == 0)
		return 0;

	ret = skb_cow(skb, 2);
	if (ret)
		return ret;

	skb_push(skb, 2);
	memmove(skb->data, skb->data + 2, len);

	skb->data[len] = 0;
	skb->data[len + 1] = 0;
	return 0;
}
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Directory: drivers/net/wireless/mediatek/mt7601u

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