linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * IPv6 Address Label subsystem

 * for the IPv6 "Default" Source Address Selection

 *

 * Copyright (C)2007 USAGI/WIDE Project

 */

/*

 * Author:

 *  YOSHIFUJI Hideaki @ USAGI/WIDE Project <yoshfuji@linux-ipv6.org>

 */

​

#include <linux/kernel.h>

#include <linux/list.h>

#include <linux/rcupdate.h>

#include <linux/in6.h>

#include <linux/slab.h>

#include <net/addrconf.h>

#include <linux/if_addrlabel.h>

#include <linux/netlink.h>

#include <linux/rtnetlink.h>

​

#if 0

#define ADDRLABEL(x...) printk(x)

#else

#define ADDRLABEL(x...) do { ; } while (0)

#endif

​

/*

 * Policy Table

 */

struct ip6addrlbl_entry {

    struct in6_addr prefix;

    int prefixlen;

    int ifindex;

    int addrtype;

    u32 label;

    struct hlist_node list;

    struct rcu_head rcu;

};

​

/*

 * Default policy table (RFC6724 + extensions)

 *

 * prefix       addr_type   label

 * -------------------------------------------------------------------------

 * ::1/128      LOOPBACK    0

 * ::/0         N/A     1

 * 2002::/16        N/A     2

 * ::/96        COMPATv4    3

 * ::ffff:0:0/96    V4MAPPED    4

 * fc00::/7     N/A     5       ULA (RFC 4193)

 * 2001::/32        N/A     6       Teredo (RFC 4380)

 * 2001:10::/28     N/A     7       ORCHID (RFC 4843)

 * fec0::/10        N/A     11      Site-local

 *                          (deprecated by RFC3879)

 * 3ffe::/16        N/A     12      6bone

 *

 * Note: 0xffffffff is used if we do not have any policies.

 * Note: Labels for ULA and 6to4 are different from labels listed in RFC6724.

 */

​

#define IPV6_ADDR_LABEL_DEFAULT 0xffffffffUL