| /* | |
| * 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; | |
| } |