ar71xx: merge files-3.2 to files

[openwrt.git] / target / linux / ar71xx / files / drivers / net / ethernet / atheros / ag71xx / ag71xx_ar8216.c

diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar8216.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar8216.c
new file mode 100644 (file)
index 0000000..7ec43b7
--- /dev/null
+++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar8216.c
@@ -0,0 +1,44 @@
+/*
+ *  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;
+}