Commit | Line | Data |
---|---|---|
b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef _ADDRCONF_H |
3 | #define _ADDRCONF_H | |
4 | ||
bd11f074 | 5 | #define MAX_RTR_SOLICITATIONS -1 /* unlimited */ |
1da177e4 | 6 | #define RTR_SOLICITATION_INTERVAL (4*HZ) |
bd11f074 | 7 | #define RTR_SOLICITATION_MAX_INTERVAL (3600*HZ) /* 1 hour */ |
1da177e4 | 8 | |
36268983 GN |
9 | #define MIN_VALID_LIFETIME (2*3600) /* 2 hours */ |
10 | ||
1da177e4 LT |
11 | #define TEMP_VALID_LIFETIME (7*86400) |
12 | #define TEMP_PREFERRED_LIFETIME (86400) | |
76f793e3 | 13 | #define REGEN_MAX_RETRY (3) |
1da177e4 LT |
14 | #define MAX_DESYNC_FACTOR (600) |
15 | ||
16 | #define ADDR_CHECK_FREQUENCY (120*HZ) | |
17 | ||
18 | #define IPV6_MAX_ADDRESSES 16 | |
19 | ||
5c766d64 JP |
20 | #define ADDRCONF_TIMER_FUZZ_MINUS (HZ > 50 ? HZ / 50 : 1) |
21 | #define ADDRCONF_TIMER_FUZZ (HZ / 4) | |
22 | #define ADDRCONF_TIMER_FUZZ_MAX (HZ) | |
23 | ||
242d3a49 WC |
24 | #define ADDRCONF_NOTIFY_PRIORITY 0 |
25 | ||
c7dc89c0 | 26 | #include <linux/in.h> |
6a800d45 PM |
27 | #include <linux/in6.h> |
28 | ||
1da177e4 LT |
29 | struct prefix_info { |
30 | __u8 type; | |
31 | __u8 length; | |
32 | __u8 prefix_len; | |
33 | ||
bd4a8167 MŻ |
34 | union __packed { |
35 | __u8 flags; | |
36 | struct __packed { | |
1da177e4 | 37 | #if defined(__BIG_ENDIAN_BITFIELD) |
bd4a8167 | 38 | __u8 onlink : 1, |
1da177e4 LT |
39 | autoconf : 1, |
40 | reserved : 6; | |
41 | #elif defined(__LITTLE_ENDIAN_BITFIELD) | |
bd4a8167 | 42 | __u8 reserved : 6, |
1da177e4 LT |
43 | autoconf : 1, |
44 | onlink : 1; | |
45 | #else | |
46 | #error "Please fix <asm/byteorder.h>" | |
47 | #endif | |
bd4a8167 MŻ |
48 | }; |
49 | }; | |
e69a4adc AV |
50 | __be32 valid; |
51 | __be32 prefered; | |
52 | __be32 reserved2; | |
1da177e4 LT |
53 | |
54 | struct in6_addr prefix; | |
55 | }; | |
56 | ||
bd4a8167 MŻ |
57 | /* rfc4861 4.6.2: IPv6 PIO is 32 bytes in size */ |
58 | static_assert(sizeof(struct prefix_info) == 32); | |
59 | ||
ba5ea614 | 60 | #include <linux/ipv6.h> |
1da177e4 LT |
61 | #include <linux/netdevice.h> |
62 | #include <net/if_inet6.h> | |
e4553edd | 63 | #include <net/ipv6.h> |
1da177e4 | 64 | |
3ad7d246 KJ |
65 | struct in6_validator_info { |
66 | struct in6_addr i6vi_addr; | |
67 | struct inet6_dev *i6vi_dev; | |
de95e047 | 68 | struct netlink_ext_ack *extack; |
3ad7d246 KJ |
69 | }; |
70 | ||
e6464b8c DA |
71 | struct ifa6_config { |
72 | const struct in6_addr *pfx; | |
73 | unsigned int plen; | |
74 | ||
47f0bd50 JL |
75 | u8 ifa_proto; |
76 | ||
e6464b8c DA |
77 | const struct in6_addr *peer_pfx; |
78 | ||
8308f3ff | 79 | u32 rt_priority; |
e6464b8c DA |
80 | u32 ifa_flags; |
81 | u32 preferred_lft; | |
82 | u32 valid_lft; | |
83 | u16 scope; | |
84 | }; | |
85 | ||
e8e54d3c JP |
86 | int addrconf_init(void); |
87 | void addrconf_cleanup(void); | |
1da177e4 | 88 | |
e8e54d3c JP |
89 | int addrconf_add_ifaddr(struct net *net, void __user *arg); |
90 | int addrconf_del_ifaddr(struct net *net, void __user *arg); | |
91 | int addrconf_set_dstaddr(struct net *net, void __user *arg); | |
1da177e4 | 92 | |
e8e54d3c JP |
93 | int ipv6_chk_addr(struct net *net, const struct in6_addr *addr, |
94 | const struct net_device *dev, int strict); | |
c58da4c6 | 95 | int ipv6_chk_addr_and_flags(struct net *net, const struct in6_addr *addr, |
232378e8 DA |
96 | const struct net_device *dev, bool skip_dev_check, |
97 | int strict, u32 banned_flags); | |
bfeade08 | 98 | |
59fbb3a6 | 99 | #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) |
e8e54d3c | 100 | int ipv6_chk_home_addr(struct net *net, const struct in6_addr *addr); |
65d4ed92 | 101 | #endif |
52eeeb84 | 102 | |
f37c6059 AA |
103 | int ipv6_chk_rpl_srh_loop(struct net *net, const struct in6_addr *segs, |
104 | unsigned char nsegs); | |
105 | ||
7df37ff3 CB |
106 | bool ipv6_chk_custom_prefix(const struct in6_addr *addr, |
107 | const unsigned int prefix_len, | |
108 | struct net_device *dev); | |
109 | ||
e8e54d3c JP |
110 | int ipv6_chk_prefix(const struct in6_addr *addr, struct net_device *dev); |
111 | ||
4ef1a7cb XL |
112 | struct net_device *ipv6_dev_find(struct net *net, const struct in6_addr *addr, |
113 | struct net_device *dev); | |
81f6cb31 | 114 | |
e8e54d3c JP |
115 | struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, |
116 | const struct in6_addr *addr, | |
117 | struct net_device *dev, int strict); | |
118 | ||
119 | int ipv6_dev_get_saddr(struct net *net, const struct net_device *dev, | |
120 | const struct in6_addr *daddr, unsigned int srcprefs, | |
121 | struct in6_addr *saddr); | |
e8e54d3c | 122 | int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr, |
479840ff | 123 | u32 banned_flags); |
7016e062 JP |
124 | bool inet_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2, |
125 | bool match_wildcard); | |
2dbb9b9e | 126 | bool inet_rcv_saddr_any(const struct sock *sk); |
e8e54d3c JP |
127 | void addrconf_join_solict(struct net_device *dev, const struct in6_addr *addr); |
128 | void addrconf_leave_solict(struct inet6_dev *idev, const struct in6_addr *addr); | |
1da177e4 | 129 | |
2ad3ed59 AA |
130 | void addrconf_add_linklocal(struct inet6_dev *idev, |
131 | const struct in6_addr *addr, u32 flags); | |
132 | ||
cc84b3c6 AA |
133 | int addrconf_prefix_rcv_add_addr(struct net *net, struct net_device *dev, |
134 | const struct prefix_info *pinfo, | |
135 | struct inet6_dev *in6_dev, | |
136 | const struct in6_addr *addr, int addr_type, | |
137 | u32 addr_flags, bool sllao, bool tokenized, | |
138 | __u32 valid_lft, u32 prefered_lft); | |
139 | ||
4d6f2859 YS |
140 | static inline void addrconf_addr_eui48_base(u8 *eui, const char *const addr) |
141 | { | |
142 | memcpy(eui, addr, 3); | |
143 | eui[3] = 0xFF; | |
144 | eui[4] = 0xFE; | |
145 | memcpy(eui + 5, addr + 3, 3); | |
146 | } | |
147 | ||
148 | static inline void addrconf_addr_eui48(u8 *eui, const char *const addr) | |
149 | { | |
150 | addrconf_addr_eui48_base(eui, addr); | |
151 | eui[0] ^= 2; | |
152 | } | |
153 | ||
399e6f95 MB |
154 | static inline int addrconf_ifid_eui48(u8 *eui, struct net_device *dev) |
155 | { | |
156 | if (dev->addr_len != ETH_ALEN) | |
157 | return -1; | |
399e6f95 MB |
158 | |
159 | /* | |
160 | * The zSeries OSA network cards can be shared among various | |
161 | * OS instances, but the OSA cards have only one MAC address. | |
162 | * This leads to duplicate address conflicts in conjunction | |
163 | * with IPv6 if more than one instance uses the same card. | |
164 | * | |
165 | * The driver for these cards can deliver a unique 16-bit | |
166 | * identifier for each instance sharing the same card. It is | |
167 | * placed instead of 0xFFFE in the interface identifier. The | |
168 | * "u" bit of the interface identifier is not inverted in this | |
169 | * case. Hence the resulting interface identifier has local | |
170 | * scope according to RFC2373. | |
171 | */ | |
4d6f2859 YS |
172 | |
173 | addrconf_addr_eui48_base(eui, dev->dev_addr); | |
174 | ||
399e6f95 MB |
175 | if (dev->dev_id) { |
176 | eui[3] = (dev->dev_id >> 8) & 0xFF; | |
177 | eui[4] = dev->dev_id & 0xFF; | |
178 | } else { | |
399e6f95 MB |
179 | eui[0] ^= 2; |
180 | } | |
4d6f2859 | 181 | |
399e6f95 MB |
182 | return 0; |
183 | } | |
184 | ||
4bed72e4 | 185 | static inline unsigned long addrconf_timeout_fixup(u32 timeout, |
95c96174 | 186 | unsigned int unit) |
4bed72e4 YH |
187 | { |
188 | if (timeout == 0xffffffff) | |
189 | return ~0UL; | |
190 | ||
191 | /* | |
192 | * Avoid arithmetic overflow. | |
193 | * Assuming unit is constant and non-zero, this "if" statement | |
194 | * will go away on 64bit archs. | |
195 | */ | |
196 | if (0xfffffffe > LONG_MAX / unit && timeout > LONG_MAX / unit) | |
197 | return LONG_MAX / unit; | |
198 | ||
199 | return timeout; | |
200 | } | |
201 | ||
202 | static inline int addrconf_finite_timeout(unsigned long timeout) | |
203 | { | |
204 | return ~timeout; | |
205 | } | |
206 | ||
2a8cc6c8 YH |
207 | /* |
208 | * IPv6 Address Label subsystem (addrlabel.c) | |
209 | */ | |
e8e54d3c JP |
210 | int ipv6_addr_label_init(void); |
211 | void ipv6_addr_label_cleanup(void); | |
a3fde2ad | 212 | int ipv6_addr_label_rtnl_register(void); |
e8e54d3c JP |
213 | u32 ipv6_addr_label(struct net *net, const struct in6_addr *addr, |
214 | int type, int ifindex); | |
2a8cc6c8 | 215 | |
1da177e4 LT |
216 | /* |
217 | * multicast prototypes (mcast.c) | |
218 | */ | |
32890862 DM |
219 | static inline bool ipv6_mc_may_pull(struct sk_buff *skb, |
220 | unsigned int len) | |
ba5ea614 LL |
221 | { |
222 | if (skb_transport_offset(skb) + ipv6_transport_len(skb) < len) | |
32890862 | 223 | return false; |
ba5ea614 LL |
224 | |
225 | return pskb_may_pull(skb, len); | |
226 | } | |
227 | ||
e8e54d3c JP |
228 | int ipv6_sock_mc_join(struct sock *sk, int ifindex, |
229 | const struct in6_addr *addr); | |
230 | int ipv6_sock_mc_drop(struct sock *sk, int ifindex, | |
231 | const struct in6_addr *addr); | |
8651be8f | 232 | void __ipv6_sock_mc_close(struct sock *sk); |
e8e54d3c | 233 | void ipv6_sock_mc_close(struct sock *sk); |
66eb554c | 234 | bool inet6_mc_check(const struct sock *sk, const struct in6_addr *mc_addr, |
e8e54d3c JP |
235 | const struct in6_addr *src_addr); |
236 | ||
237 | int ipv6_dev_mc_inc(struct net_device *dev, const struct in6_addr *addr); | |
238 | int __ipv6_dev_mc_dec(struct inet6_dev *idev, const struct in6_addr *addr); | |
239 | int ipv6_dev_mc_dec(struct net_device *dev, const struct in6_addr *addr); | |
240 | void ipv6_mc_up(struct inet6_dev *idev); | |
241 | void ipv6_mc_down(struct inet6_dev *idev); | |
242 | void ipv6_mc_unmap(struct inet6_dev *idev); | |
243 | void ipv6_mc_remap(struct inet6_dev *idev); | |
244 | void ipv6_mc_init_dev(struct inet6_dev *idev); | |
245 | void ipv6_mc_destroy_dev(struct inet6_dev *idev); | |
ba5ea614 | 246 | int ipv6_mc_check_mld(struct sk_buff *skb); |
da13c59b | 247 | void addrconf_dad_failure(struct sk_buff *skb, struct inet6_ifaddr *ifp); |
e8e54d3c JP |
248 | |
249 | bool ipv6_chk_mcast_addr(struct net_device *dev, const struct in6_addr *group, | |
250 | const struct in6_addr *src_addr); | |
251 | ||
252 | void ipv6_mc_dad_complete(struct inet6_dev *idev); | |
5f81bd2e | 253 | |
daad1512 YH |
254 | /* |
255 | * identify MLD packets for MLD filter exceptions | |
256 | */ | |
257 | static inline bool ipv6_is_mld(struct sk_buff *skb, int nexthdr, int offset) | |
258 | { | |
259 | struct icmp6hdr *hdr; | |
260 | ||
261 | if (nexthdr != IPPROTO_ICMPV6 || | |
262 | !pskb_network_may_pull(skb, offset + sizeof(struct icmp6hdr))) | |
263 | return false; | |
264 | ||
265 | hdr = (struct icmp6hdr *)(skb_network_header(skb) + offset); | |
266 | ||
267 | switch (hdr->icmp6_type) { | |
268 | case ICMPV6_MGM_QUERY: | |
269 | case ICMPV6_MGM_REPORT: | |
270 | case ICMPV6_MGM_REDUCTION: | |
271 | case ICMPV6_MLD2_REPORT: | |
272 | return true; | |
273 | default: | |
274 | break; | |
275 | } | |
276 | return false; | |
277 | } | |
1da177e4 | 278 | |
e8e54d3c JP |
279 | void addrconf_prefix_rcv(struct net_device *dev, |
280 | u8 *opt, int len, bool sllao); | |
1da177e4 | 281 | |
1da177e4 LT |
282 | /* |
283 | * anycast prototypes (anycast.c) | |
284 | */ | |
e8e54d3c JP |
285 | int ipv6_sock_ac_join(struct sock *sk, int ifindex, |
286 | const struct in6_addr *addr); | |
287 | int ipv6_sock_ac_drop(struct sock *sk, int ifindex, | |
288 | const struct in6_addr *addr); | |
8c0de6e9 | 289 | void __ipv6_sock_ac_close(struct sock *sk); |
e8e54d3c JP |
290 | void ipv6_sock_ac_close(struct sock *sk); |
291 | ||
013b4d90 | 292 | int __ipv6_dev_ac_inc(struct inet6_dev *idev, const struct in6_addr *addr); |
e8e54d3c | 293 | int __ipv6_dev_ac_dec(struct inet6_dev *idev, const struct in6_addr *addr); |
381f4dca | 294 | void ipv6_ac_destroy_dev(struct inet6_dev *idev); |
e8e54d3c | 295 | bool ipv6_chk_acast_addr(struct net *net, struct net_device *dev, |
7c90cc2d FLB |
296 | const struct in6_addr *addr); |
297 | bool ipv6_chk_acast_addr_src(struct net *net, struct net_device *dev, | |
298 | const struct in6_addr *addr); | |
2384d025 JB |
299 | int ipv6_anycast_init(void); |
300 | void ipv6_anycast_cleanup(void); | |
1da177e4 LT |
301 | |
302 | /* Device notifier */ | |
e8e54d3c JP |
303 | int register_inet6addr_notifier(struct notifier_block *nb); |
304 | int unregister_inet6addr_notifier(struct notifier_block *nb); | |
305 | int inet6addr_notifier_call_chain(unsigned long val, void *v); | |
1da177e4 | 306 | |
3ad7d246 KJ |
307 | int register_inet6addr_validator_notifier(struct notifier_block *nb); |
308 | int unregister_inet6addr_validator_notifier(struct notifier_block *nb); | |
309 | int inet6addr_validator_notifier_call_chain(unsigned long val, void *v); | |
310 | ||
85b3daad DA |
311 | void inet6_netconf_notify_devconf(struct net *net, int event, int type, |
312 | int ifindex, struct ipv6_devconf *devconf); | |
d67b8c61 | 313 | |
48daa3bb ED |
314 | /** |
315 | * __in6_dev_get - get inet6_dev pointer from netdevice | |
316 | * @dev: network device | |
317 | * | |
318 | * Caller must hold rcu_read_lock or RTNL, because this function | |
319 | * does not take a reference on the inet6_dev. | |
320 | */ | |
321 | static inline struct inet6_dev *__in6_dev_get(const struct net_device *dev) | |
1da177e4 | 322 | { |
48daa3bb | 323 | return rcu_dereference_rtnl(dev->ip6_ptr); |
1da177e4 LT |
324 | } |
325 | ||
e1ae5c2e SS |
326 | /** |
327 | * __in6_dev_stats_get - get inet6_dev pointer for stats | |
328 | * @dev: network device | |
329 | * @skb: skb for original incoming interface if neeeded | |
330 | * | |
331 | * Caller must hold rcu_read_lock or RTNL, because this function | |
332 | * does not take a reference on the inet6_dev. | |
333 | */ | |
334 | static inline struct inet6_dev *__in6_dev_stats_get(const struct net_device *dev, | |
335 | const struct sk_buff *skb) | |
336 | { | |
337 | if (netif_is_l3_master(dev)) | |
338 | dev = dev_get_by_index_rcu(dev_net(dev), inet6_iif(skb)); | |
339 | return __in6_dev_get(dev); | |
340 | } | |
341 | ||
bdb7cc64 SS |
342 | /** |
343 | * __in6_dev_get_safely - get inet6_dev pointer from netdevice | |
344 | * @dev: network device | |
345 | * | |
346 | * This is a safer version of __in6_dev_get | |
347 | */ | |
348 | static inline struct inet6_dev *__in6_dev_get_safely(const struct net_device *dev) | |
349 | { | |
350 | if (likely(dev)) | |
351 | return rcu_dereference_rtnl(dev->ip6_ptr); | |
352 | else | |
353 | return NULL; | |
354 | } | |
355 | ||
48daa3bb ED |
356 | /** |
357 | * in6_dev_get - get inet6_dev pointer from netdevice | |
358 | * @dev: network device | |
359 | * | |
360 | * This version can be used in any context, and takes a reference | |
361 | * on the inet6_dev. Callers must use in6_dev_put() later to | |
362 | * release this reference. | |
363 | */ | |
364 | static inline struct inet6_dev *in6_dev_get(const struct net_device *dev) | |
1da177e4 | 365 | { |
48daa3bb ED |
366 | struct inet6_dev *idev; |
367 | ||
8814c4b5 | 368 | rcu_read_lock(); |
48daa3bb | 369 | idev = rcu_dereference(dev->ip6_ptr); |
1da177e4 | 370 | if (idev) |
1be92460 | 371 | refcount_inc(&idev->refcnt); |
8814c4b5 | 372 | rcu_read_unlock(); |
1da177e4 LT |
373 | return idev; |
374 | } | |
375 | ||
bba24896 JP |
376 | static inline struct neigh_parms *__in6_dev_nd_parms_get_rcu(const struct net_device *dev) |
377 | { | |
378 | struct inet6_dev *idev = __in6_dev_get(dev); | |
379 | ||
380 | return idev ? idev->nd_parms : NULL; | |
381 | } | |
382 | ||
e8e54d3c | 383 | void in6_dev_finish_destroy(struct inet6_dev *idev); |
1da177e4 | 384 | |
48daa3bb | 385 | static inline void in6_dev_put(struct inet6_dev *idev) |
1da177e4 | 386 | { |
1be92460 | 387 | if (refcount_dec_and_test(&idev->refcnt)) |
1da177e4 LT |
388 | in6_dev_finish_destroy(idev); |
389 | } | |
390 | ||
12d94a80 ED |
391 | static inline void in6_dev_put_clear(struct inet6_dev **pidev) |
392 | { | |
393 | struct inet6_dev *idev = *pidev; | |
394 | ||
395 | if (idev) { | |
396 | in6_dev_put(idev); | |
397 | *pidev = NULL; | |
398 | } | |
399 | } | |
400 | ||
48daa3bb ED |
401 | static inline void __in6_dev_put(struct inet6_dev *idev) |
402 | { | |
1be92460 | 403 | refcount_dec(&idev->refcnt); |
48daa3bb | 404 | } |
1da177e4 | 405 | |
48daa3bb ED |
406 | static inline void in6_dev_hold(struct inet6_dev *idev) |
407 | { | |
1be92460 | 408 | refcount_inc(&idev->refcnt); |
48daa3bb | 409 | } |
1da177e4 | 410 | |
6d3d07b4 DA |
411 | /* called with rcu_read_lock held */ |
412 | static inline bool ip6_ignore_linkdown(const struct net_device *dev) | |
413 | { | |
414 | const struct inet6_dev *idev = __in6_dev_get(dev); | |
415 | ||
85f0173d ZX |
416 | if (unlikely(!idev)) |
417 | return true; | |
418 | ||
6d3d07b4 DA |
419 | return !!idev->cnf.ignore_routes_with_linkdown; |
420 | } | |
421 | ||
e8e54d3c | 422 | void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp); |
1da177e4 LT |
423 | |
424 | static inline void in6_ifa_put(struct inet6_ifaddr *ifp) | |
425 | { | |
271201c0 | 426 | if (refcount_dec_and_test(&ifp->refcnt)) |
1da177e4 LT |
427 | inet6_ifa_finish_destroy(ifp); |
428 | } | |
429 | ||
48daa3bb ED |
430 | static inline void __in6_ifa_put(struct inet6_ifaddr *ifp) |
431 | { | |
271201c0 | 432 | refcount_dec(&ifp->refcnt); |
48daa3bb | 433 | } |
1da177e4 | 434 | |
48daa3bb ED |
435 | static inline void in6_ifa_hold(struct inet6_ifaddr *ifp) |
436 | { | |
271201c0 | 437 | refcount_inc(&ifp->refcnt); |
48daa3bb | 438 | } |
1da177e4 | 439 | |
1da177e4 LT |
440 | |
441 | /* | |
442 | * compute link-local solicited-node multicast address | |
443 | */ | |
444 | ||
445 | static inline void addrconf_addr_solict_mult(const struct in6_addr *addr, | |
446 | struct in6_addr *solicited) | |
447 | { | |
448 | ipv6_addr_set(solicited, | |
0e7b8dcd YH |
449 | htonl(0xFF020000), 0, |
450 | htonl(0x1), | |
451 | htonl(0xFF000000) | addr->s6_addr32[3]); | |
1da177e4 LT |
452 | } |
453 | ||
b27b28cb | 454 | static inline bool ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr) |
1da177e4 | 455 | { |
d1641565 | 456 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 |
54e1f08b | 457 | __be64 *p = (__force __be64 *)addr; |
d1641565 YH |
458 | return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) | (p[1] ^ cpu_to_be64(1))) == 0UL; |
459 | #else | |
48daa3bb | 460 | return ((addr->s6_addr32[0] ^ htonl(0xff020000)) | |
fed85383 | 461 | addr->s6_addr32[1] | addr->s6_addr32[2] | |
48daa3bb | 462 | (addr->s6_addr32[3] ^ htonl(0x00000001))) == 0; |
d1641565 | 463 | #endif |
1da177e4 LT |
464 | } |
465 | ||
b27b28cb | 466 | static inline bool ipv6_addr_is_ll_all_routers(const struct in6_addr *addr) |
1da177e4 | 467 | { |
d1641565 | 468 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 |
54e1f08b | 469 | __be64 *p = (__force __be64 *)addr; |
d1641565 YH |
470 | return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) | (p[1] ^ cpu_to_be64(2))) == 0UL; |
471 | #else | |
48daa3bb | 472 | return ((addr->s6_addr32[0] ^ htonl(0xff020000)) | |
fed85383 | 473 | addr->s6_addr32[1] | addr->s6_addr32[2] | |
48daa3bb | 474 | (addr->s6_addr32[3] ^ htonl(0x00000002))) == 0; |
d1641565 | 475 | #endif |
1da177e4 LT |
476 | } |
477 | ||
b27b28cb | 478 | static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr) |
c7dc89c0 | 479 | { |
48daa3bb | 480 | return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE); |
c7dc89c0 FT |
481 | } |
482 | ||
ca97a644 YH |
483 | static inline bool ipv6_addr_is_solict_mult(const struct in6_addr *addr) |
484 | { | |
9d100774 | 485 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 |
54e1f08b | 486 | __be64 *p = (__force __be64 *)addr; |
9d100774 YH |
487 | return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) | |
488 | ((p[1] ^ cpu_to_be64(0x00000001ff000000UL)) & | |
489 | cpu_to_be64(0xffffffffff000000UL))) == 0UL; | |
490 | #else | |
491 | return ((addr->s6_addr32[0] ^ htonl(0xff020000)) | | |
492 | addr->s6_addr32[1] | | |
493 | (addr->s6_addr32[2] ^ htonl(0x00000001)) | | |
494 | (addr->s6_addr[12] ^ 0xff)) == 0; | |
495 | #endif | |
ca97a644 YH |
496 | } |
497 | ||
4b3087c7 LL |
498 | static inline bool ipv6_addr_is_all_snoopers(const struct in6_addr *addr) |
499 | { | |
500 | #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 | |
54e1f08b | 501 | __be64 *p = (__force __be64 *)addr; |
4b3087c7 LL |
502 | |
503 | return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) | | |
504 | (p[1] ^ cpu_to_be64(0x6a))) == 0UL; | |
505 | #else | |
506 | return ((addr->s6_addr32[0] ^ htonl(0xff020000)) | | |
507 | addr->s6_addr32[1] | addr->s6_addr32[2] | | |
508 | (addr->s6_addr32[3] ^ htonl(0x0000006a))) == 0; | |
509 | #endif | |
510 | } | |
511 | ||
20380731 | 512 | #ifdef CONFIG_PROC_FS |
e8e54d3c JP |
513 | int if6_proc_init(void); |
514 | void if6_proc_exit(void); | |
20380731 ACM |
515 | #endif |
516 | ||
1da177e4 | 517 | #endif |