linux-imx

/*

 * Ethernet netdevice using ATM AAL5 as underlying carrier

 * (RFC1483 obsoleted by RFC2684) for Linux

 *

 * Authors: Marcell GAL, 2000, XDSL Ltd, Hungary

 *          Eric Kinzie, 2006-2007, US Naval Research Laboratory

 */

​

#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__

​

#include <linux/module.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/list.h>

#include <linux/netdevice.h>

#include <linux/skbuff.h>

#include <linux/etherdevice.h>

#include <linux/rtnetlink.h>

#include <linux/ip.h>

#include <linux/uaccess.h>

#include <linux/slab.h>

#include <net/arp.h>

#include <linux/atm.h>

#include <linux/atmdev.h>

#include <linux/capability.h>

#include <linux/seq_file.h>

​

#include <linux/atmbr2684.h>

​

#include "common.h"

​

static void skb_debug(const struct sk_buff *skb)

{

#ifdef SKB_DEBUG

#define NUM2PRINT 50

    print_hex_dump(KERN_DEBUG, "br2684: skb: ", DUMP_OFFSET,

               16, 1, skb->data, min(NUM2PRINT, skb->len), true);

#endif

}

​

#define BR2684_ETHERTYPE_LEN    2

#define BR2684_PAD_LEN      2

​

#define LLC     0xaa, 0xaa, 0x03

#define SNAP_BRIDGED    0x00, 0x80, 0xc2

#define SNAP_ROUTED 0x00, 0x00, 0x00

#define PID_ETHERNET    0x00, 0x07

#define ETHERTYPE_IPV4  0x08, 0x00

#define ETHERTYPE_IPV6  0x86, 0xdd

#define PAD_BRIDGED 0x00, 0x00

​

static const unsigned char ethertype_ipv4[] = { ETHERTYPE_IPV4 };

static const unsigned char ethertype_ipv6[] = { ETHERTYPE_IPV6 };

static const unsigned char llc_oui_pid_pad[] =

            { LLC, SNAP_BRIDGED, PID_ETHERNET, PAD_BRIDGED };

static const unsigned char pad[] = { PAD_BRIDGED };

static const unsigned char llc_oui_ipv4[] = { LLC, SNAP_ROUTED, ETHERTYPE_IPV4 };

static const unsigned char llc_oui_ipv6[] = { LLC, SNAP_ROUTED, ETHERTYPE_IPV6 };

​

enum br2684_encaps {

    e_vc = BR2684_ENCAPS_VC,

    e_llc = BR2684_ENCAPS_LLC,

};