mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 00:17:44 +00:00
f88c91ddba
Tomas reported the following build error: net/built-in.o: In function `ieee80211_unregister_hw': (.text+0x10f0e1): undefined reference to `unregister_inet6addr_notifier' net/built-in.o: In function `ieee80211_register_hw': (.text+0x10f610): undefined reference to `register_inet6addr_notifier' make: *** [vmlinux] Error 1 when built IPv6 as a module. So we have to statically link these symbols. Reported-by: Tomas Melin <tomas.melin@iki.fi> Cc: Tomas Melin <tomas.melin@iki.fi> Cc: "David S. Miller" <davem@davemloft.net> Cc: YOSHIFUJI Hidaki <yoshfuji@linux-ipv6.org> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
343 lines
9.4 KiB
C
343 lines
9.4 KiB
C
#ifndef _ADDRCONF_H
|
|
#define _ADDRCONF_H
|
|
|
|
#define MAX_RTR_SOLICITATIONS 3
|
|
#define RTR_SOLICITATION_INTERVAL (4*HZ)
|
|
|
|
#define MIN_VALID_LIFETIME (2*3600) /* 2 hours */
|
|
|
|
#define TEMP_VALID_LIFETIME (7*86400)
|
|
#define TEMP_PREFERRED_LIFETIME (86400)
|
|
#define REGEN_MAX_RETRY (3)
|
|
#define MAX_DESYNC_FACTOR (600)
|
|
|
|
#define ADDR_CHECK_FREQUENCY (120*HZ)
|
|
|
|
#define IPV6_MAX_ADDRESSES 16
|
|
|
|
#define ADDRCONF_TIMER_FUZZ_MINUS (HZ > 50 ? HZ / 50 : 1)
|
|
#define ADDRCONF_TIMER_FUZZ (HZ / 4)
|
|
#define ADDRCONF_TIMER_FUZZ_MAX (HZ)
|
|
|
|
#include <linux/in.h>
|
|
#include <linux/in6.h>
|
|
|
|
struct prefix_info {
|
|
__u8 type;
|
|
__u8 length;
|
|
__u8 prefix_len;
|
|
|
|
#if defined(__BIG_ENDIAN_BITFIELD)
|
|
__u8 onlink : 1,
|
|
autoconf : 1,
|
|
reserved : 6;
|
|
#elif defined(__LITTLE_ENDIAN_BITFIELD)
|
|
__u8 reserved : 6,
|
|
autoconf : 1,
|
|
onlink : 1;
|
|
#else
|
|
#error "Please fix <asm/byteorder.h>"
|
|
#endif
|
|
__be32 valid;
|
|
__be32 prefered;
|
|
__be32 reserved2;
|
|
|
|
struct in6_addr prefix;
|
|
};
|
|
|
|
|
|
#include <linux/netdevice.h>
|
|
#include <net/if_inet6.h>
|
|
#include <net/ipv6.h>
|
|
|
|
#define IN6_ADDR_HSIZE_SHIFT 4
|
|
#define IN6_ADDR_HSIZE (1 << IN6_ADDR_HSIZE_SHIFT)
|
|
|
|
extern int addrconf_init(void);
|
|
extern void addrconf_cleanup(void);
|
|
|
|
extern int addrconf_add_ifaddr(struct net *net,
|
|
void __user *arg);
|
|
extern int addrconf_del_ifaddr(struct net *net,
|
|
void __user *arg);
|
|
extern int addrconf_set_dstaddr(struct net *net,
|
|
void __user *arg);
|
|
|
|
extern int ipv6_chk_addr(struct net *net,
|
|
const struct in6_addr *addr,
|
|
struct net_device *dev,
|
|
int strict);
|
|
|
|
#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
|
|
extern int ipv6_chk_home_addr(struct net *net,
|
|
const struct in6_addr *addr);
|
|
#endif
|
|
|
|
extern int ipv6_chk_prefix(const struct in6_addr *addr,
|
|
struct net_device *dev);
|
|
|
|
extern struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net,
|
|
const struct in6_addr *addr,
|
|
struct net_device *dev,
|
|
int strict);
|
|
|
|
extern int ipv6_dev_get_saddr(struct net *net,
|
|
const struct net_device *dev,
|
|
const struct in6_addr *daddr,
|
|
unsigned int srcprefs,
|
|
struct in6_addr *saddr);
|
|
extern int ipv6_get_lladdr(struct net_device *dev,
|
|
struct in6_addr *addr,
|
|
unsigned char banned_flags);
|
|
extern int ipv6_rcv_saddr_equal(const struct sock *sk,
|
|
const struct sock *sk2);
|
|
extern void addrconf_join_solict(struct net_device *dev,
|
|
const struct in6_addr *addr);
|
|
extern void addrconf_leave_solict(struct inet6_dev *idev,
|
|
const struct in6_addr *addr);
|
|
|
|
static inline unsigned long addrconf_timeout_fixup(u32 timeout,
|
|
unsigned int unit)
|
|
{
|
|
if (timeout == 0xffffffff)
|
|
return ~0UL;
|
|
|
|
/*
|
|
* Avoid arithmetic overflow.
|
|
* Assuming unit is constant and non-zero, this "if" statement
|
|
* will go away on 64bit archs.
|
|
*/
|
|
if (0xfffffffe > LONG_MAX / unit && timeout > LONG_MAX / unit)
|
|
return LONG_MAX / unit;
|
|
|
|
return timeout;
|
|
}
|
|
|
|
static inline int addrconf_finite_timeout(unsigned long timeout)
|
|
{
|
|
return ~timeout;
|
|
}
|
|
|
|
/*
|
|
* IPv6 Address Label subsystem (addrlabel.c)
|
|
*/
|
|
extern int ipv6_addr_label_init(void);
|
|
extern void ipv6_addr_label_cleanup(void);
|
|
extern void ipv6_addr_label_rtnl_register(void);
|
|
extern u32 ipv6_addr_label(struct net *net,
|
|
const struct in6_addr *addr,
|
|
int type, int ifindex);
|
|
|
|
/*
|
|
* multicast prototypes (mcast.c)
|
|
*/
|
|
extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
|
|
const struct in6_addr *addr);
|
|
extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
|
|
const struct in6_addr *addr);
|
|
extern void ipv6_sock_mc_close(struct sock *sk);
|
|
extern bool inet6_mc_check(struct sock *sk,
|
|
const struct in6_addr *mc_addr,
|
|
const struct in6_addr *src_addr);
|
|
|
|
extern int ipv6_dev_mc_inc(struct net_device *dev, const struct in6_addr *addr);
|
|
extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, const struct in6_addr *addr);
|
|
extern int ipv6_dev_mc_dec(struct net_device *dev, const struct in6_addr *addr);
|
|
extern void ipv6_mc_up(struct inet6_dev *idev);
|
|
extern void ipv6_mc_down(struct inet6_dev *idev);
|
|
extern void ipv6_mc_unmap(struct inet6_dev *idev);
|
|
extern void ipv6_mc_remap(struct inet6_dev *idev);
|
|
extern void ipv6_mc_init_dev(struct inet6_dev *idev);
|
|
extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
|
|
extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
|
|
|
|
extern bool ipv6_chk_mcast_addr(struct net_device *dev,
|
|
const struct in6_addr *group,
|
|
const struct in6_addr *src_addr);
|
|
|
|
/*
|
|
* identify MLD packets for MLD filter exceptions
|
|
*/
|
|
static inline bool ipv6_is_mld(struct sk_buff *skb, int nexthdr, int offset)
|
|
{
|
|
struct icmp6hdr *hdr;
|
|
|
|
if (nexthdr != IPPROTO_ICMPV6 ||
|
|
!pskb_network_may_pull(skb, offset + sizeof(struct icmp6hdr)))
|
|
return false;
|
|
|
|
hdr = (struct icmp6hdr *)(skb_network_header(skb) + offset);
|
|
|
|
switch (hdr->icmp6_type) {
|
|
case ICMPV6_MGM_QUERY:
|
|
case ICMPV6_MGM_REPORT:
|
|
case ICMPV6_MGM_REDUCTION:
|
|
case ICMPV6_MLD2_REPORT:
|
|
return true;
|
|
default:
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
extern void addrconf_prefix_rcv(struct net_device *dev,
|
|
u8 *opt, int len, bool sllao);
|
|
|
|
/*
|
|
* anycast prototypes (anycast.c)
|
|
*/
|
|
extern int ipv6_sock_ac_join(struct sock *sk,int ifindex, const struct in6_addr *addr);
|
|
extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex, const struct in6_addr *addr);
|
|
extern void ipv6_sock_ac_close(struct sock *sk);
|
|
|
|
extern int ipv6_dev_ac_inc(struct net_device *dev, const struct in6_addr *addr);
|
|
extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, const struct in6_addr *addr);
|
|
extern bool ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
|
|
const struct in6_addr *addr);
|
|
|
|
|
|
/* Device notifier */
|
|
extern int register_inet6addr_notifier(struct notifier_block *nb);
|
|
extern int unregister_inet6addr_notifier(struct notifier_block *nb);
|
|
extern int inet6addr_notifier_call_chain(unsigned long val, void *v);
|
|
|
|
extern void inet6_netconf_notify_devconf(struct net *net, int type, int ifindex,
|
|
struct ipv6_devconf *devconf);
|
|
|
|
/**
|
|
* __in6_dev_get - get inet6_dev pointer from netdevice
|
|
* @dev: network device
|
|
*
|
|
* Caller must hold rcu_read_lock or RTNL, because this function
|
|
* does not take a reference on the inet6_dev.
|
|
*/
|
|
static inline struct inet6_dev *__in6_dev_get(const struct net_device *dev)
|
|
{
|
|
return rcu_dereference_rtnl(dev->ip6_ptr);
|
|
}
|
|
|
|
/**
|
|
* in6_dev_get - get inet6_dev pointer from netdevice
|
|
* @dev: network device
|
|
*
|
|
* This version can be used in any context, and takes a reference
|
|
* on the inet6_dev. Callers must use in6_dev_put() later to
|
|
* release this reference.
|
|
*/
|
|
static inline struct inet6_dev *in6_dev_get(const struct net_device *dev)
|
|
{
|
|
struct inet6_dev *idev;
|
|
|
|
rcu_read_lock();
|
|
idev = rcu_dereference(dev->ip6_ptr);
|
|
if (idev)
|
|
atomic_inc(&idev->refcnt);
|
|
rcu_read_unlock();
|
|
return idev;
|
|
}
|
|
|
|
extern void in6_dev_finish_destroy(struct inet6_dev *idev);
|
|
|
|
static inline void in6_dev_put(struct inet6_dev *idev)
|
|
{
|
|
if (atomic_dec_and_test(&idev->refcnt))
|
|
in6_dev_finish_destroy(idev);
|
|
}
|
|
|
|
static inline void __in6_dev_put(struct inet6_dev *idev)
|
|
{
|
|
atomic_dec(&idev->refcnt);
|
|
}
|
|
|
|
static inline void in6_dev_hold(struct inet6_dev *idev)
|
|
{
|
|
atomic_inc(&idev->refcnt);
|
|
}
|
|
|
|
extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
|
|
|
|
static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
|
|
{
|
|
if (atomic_dec_and_test(&ifp->refcnt))
|
|
inet6_ifa_finish_destroy(ifp);
|
|
}
|
|
|
|
static inline void __in6_ifa_put(struct inet6_ifaddr *ifp)
|
|
{
|
|
atomic_dec(&ifp->refcnt);
|
|
}
|
|
|
|
static inline void in6_ifa_hold(struct inet6_ifaddr *ifp)
|
|
{
|
|
atomic_inc(&ifp->refcnt);
|
|
}
|
|
|
|
|
|
/*
|
|
* compute link-local solicited-node multicast address
|
|
*/
|
|
|
|
static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
|
|
struct in6_addr *solicited)
|
|
{
|
|
ipv6_addr_set(solicited,
|
|
htonl(0xFF020000), 0,
|
|
htonl(0x1),
|
|
htonl(0xFF000000) | addr->s6_addr32[3]);
|
|
}
|
|
|
|
static inline bool ipv6_addr_is_multicast(const struct in6_addr *addr)
|
|
{
|
|
return (addr->s6_addr32[0] & htonl(0xFF000000)) == htonl(0xFF000000);
|
|
}
|
|
|
|
static inline bool ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
|
|
{
|
|
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
|
|
__u64 *p = (__u64 *)addr;
|
|
return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) | (p[1] ^ cpu_to_be64(1))) == 0UL;
|
|
#else
|
|
return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |
|
|
addr->s6_addr32[1] | addr->s6_addr32[2] |
|
|
(addr->s6_addr32[3] ^ htonl(0x00000001))) == 0;
|
|
#endif
|
|
}
|
|
|
|
static inline bool ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
|
|
{
|
|
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
|
|
__u64 *p = (__u64 *)addr;
|
|
return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) | (p[1] ^ cpu_to_be64(2))) == 0UL;
|
|
#else
|
|
return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |
|
|
addr->s6_addr32[1] | addr->s6_addr32[2] |
|
|
(addr->s6_addr32[3] ^ htonl(0x00000002))) == 0;
|
|
#endif
|
|
}
|
|
|
|
static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr)
|
|
{
|
|
return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE);
|
|
}
|
|
|
|
static inline bool ipv6_addr_is_solict_mult(const struct in6_addr *addr)
|
|
{
|
|
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
|
|
__u64 *p = (__u64 *)addr;
|
|
return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) |
|
|
((p[1] ^ cpu_to_be64(0x00000001ff000000UL)) &
|
|
cpu_to_be64(0xffffffffff000000UL))) == 0UL;
|
|
#else
|
|
return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |
|
|
addr->s6_addr32[1] |
|
|
(addr->s6_addr32[2] ^ htonl(0x00000001)) |
|
|
(addr->s6_addr[12] ^ 0xff)) == 0;
|
|
#endif
|
|
}
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
extern int if6_proc_init(void);
|
|
extern void if6_proc_exit(void);
|
|
#endif
|
|
|
|
#endif
|