/* * 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; }