| /* |
| * Atheros AR71xx built-in ethernet mac driver |
| * Special support for the Atheros ar8216 switch chip |
| * |
| * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org> |
| * |
| * Based on Atheros' AG7100 driver |
| * |
| * 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. |
| */ |
| |
| #include "ag71xx.h" |
| |
| #define AR8216_PACKET_TYPE_MASK 0xf |
| #define AR8216_PACKET_TYPE_NORMAL 0 |
| |
| #define AR8216_HEADER_LEN 2 |
| |
| void ag71xx_add_ar8216_header(struct ag71xx *ag, struct sk_buff *skb) |
| { |
| skb_push(skb, AR8216_HEADER_LEN); |
| skb->data[0] = 0x10; |
| skb->data[1] = 0x80; |
| } |
| |
| int ag71xx_remove_ar8216_header(struct ag71xx *ag, struct sk_buff *skb, |
| int pktlen) |
| { |
| u8 type; |
| |
| type = skb->data[1] & AR8216_PACKET_TYPE_MASK; |
| switch (type) { |
| case AR8216_PACKET_TYPE_NORMAL: |
| break; |
| |
| default: |
| return -EINVAL; |
| } |
| |
| skb_pull(skb, AR8216_HEADER_LEN); |
| return 0; |
| } |
