1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
/*
* 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);
}
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;
}
|
