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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef _NDISC_H |
3 | #define _NDISC_H | |
4 | ||
71df5777 DA |
5 | #include <net/ipv6_stubs.h> |
6 | ||
1da177e4 LT |
7 | /* |
8 | * ICMP codes for neighbour discovery messages | |
9 | */ | |
10 | ||
11 | #define NDISC_ROUTER_SOLICITATION 133 | |
12 | #define NDISC_ROUTER_ADVERTISEMENT 134 | |
13 | #define NDISC_NEIGHBOUR_SOLICITATION 135 | |
14 | #define NDISC_NEIGHBOUR_ADVERTISEMENT 136 | |
15 | #define NDISC_REDIRECT 137 | |
16 | ||
fadf6bf0 TF |
17 | /* |
18 | * Router type: cross-layer information from link-layer to | |
19 | * IPv6 layer reported by certain link types (e.g., RFC4214). | |
20 | */ | |
21 | #define NDISC_NODETYPE_UNSPEC 0 /* unspecified (default) */ | |
22 | #define NDISC_NODETYPE_HOST 1 /* host or unauthorized router */ | |
23 | #define NDISC_NODETYPE_NODEFAULT 2 /* non-default router */ | |
24 | #define NDISC_NODETYPE_DEFAULT 3 /* default router */ | |
25 | ||
1da177e4 LT |
26 | /* |
27 | * ndisc options | |
28 | */ | |
29 | ||
30 | enum { | |
31 | __ND_OPT_PREFIX_INFO_END = 0, | |
32 | ND_OPT_SOURCE_LL_ADDR = 1, /* RFC2461 */ | |
33 | ND_OPT_TARGET_LL_ADDR = 2, /* RFC2461 */ | |
34 | ND_OPT_PREFIX_INFO = 3, /* RFC2461 */ | |
35 | ND_OPT_REDIRECT_HDR = 4, /* RFC2461 */ | |
36 | ND_OPT_MTU = 5, /* RFC2461 */ | |
adc176c5 | 37 | ND_OPT_NONCE = 14, /* RFC7527 */ |
70ceb4f5 YH |
38 | __ND_OPT_ARRAY_MAX, |
39 | ND_OPT_ROUTE_INFO = 24, /* RFC4191 */ | |
31910575 | 40 | ND_OPT_RDNSS = 25, /* RFC5006 */ |
e35f30c1 | 41 | ND_OPT_DNSSL = 31, /* RFC6106 */ |
bbe5f5ce | 42 | ND_OPT_6CO = 34, /* RFC6775 */ |
66b5f1c4 | 43 | ND_OPT_CAPTIVE_PORTAL = 37, /* RFC7710 */ |
9175d3f3 | 44 | ND_OPT_PREF64 = 38, /* RFC8781 */ |
1da177e4 LT |
45 | __ND_OPT_MAX |
46 | }; | |
47 | ||
48 | #define MAX_RTR_SOLICITATION_DELAY HZ | |
49 | ||
50 | #define ND_REACHABLE_TIME (30*HZ) | |
51 | #define ND_RETRANS_TIMER HZ | |
52 | ||
14c85021 | 53 | #include <linux/compiler.h> |
1da177e4 | 54 | #include <linux/icmpv6.h> |
14c85021 ACM |
55 | #include <linux/in6.h> |
56 | #include <linux/types.h> | |
30f2a5f3 DM |
57 | #include <linux/if_arp.h> |
58 | #include <linux/netdevice.h> | |
b14f243a | 59 | #include <linux/hash.h> |
14c85021 | 60 | |
1da177e4 | 61 | #include <net/neighbour.h> |
14c85021 | 62 | |
cc84b3c6 AA |
63 | /* Set to 3 to get tracing... */ |
64 | #define ND_DEBUG 1 | |
65 | ||
66 | #define ND_PRINTK(val, level, fmt, ...) \ | |
67 | do { \ | |
68 | if (val <= ND_DEBUG) \ | |
69 | net_##level##_ratelimited(fmt, ##__VA_ARGS__); \ | |
70 | } while (0) | |
71 | ||
14c85021 | 72 | struct ctl_table; |
14c85021 ACM |
73 | struct inet6_dev; |
74 | struct net_device; | |
75 | struct net_proto_family; | |
76 | struct sk_buff; | |
f997c55c | 77 | struct prefix_info; |
1da177e4 LT |
78 | |
79 | extern struct neigh_table nd_tbl; | |
80 | ||
81 | struct nd_msg { | |
82 | struct icmp6hdr icmph; | |
83 | struct in6_addr target; | |
53e76f48 | 84 | __u8 opt[]; |
1da177e4 LT |
85 | }; |
86 | ||
87 | struct rs_msg { | |
88 | struct icmp6hdr icmph; | |
53e76f48 | 89 | __u8 opt[]; |
1da177e4 LT |
90 | }; |
91 | ||
92 | struct ra_msg { | |
93 | struct icmp6hdr icmph; | |
e69a4adc AV |
94 | __be32 reachable_time; |
95 | __be32 retrans_timer; | |
1da177e4 LT |
96 | }; |
97 | ||
093d04d4 DJ |
98 | struct rd_msg { |
99 | struct icmp6hdr icmph; | |
100 | struct in6_addr target; | |
101 | struct in6_addr dest; | |
53e76f48 | 102 | __u8 opt[]; |
093d04d4 DJ |
103 | }; |
104 | ||
1da177e4 LT |
105 | struct nd_opt_hdr { |
106 | __u8 nd_opt_type; | |
107 | __u8 nd_opt_len; | |
bc10502d | 108 | } __packed; |
1da177e4 | 109 | |
30f2a5f3 DM |
110 | /* ND options */ |
111 | struct ndisc_options { | |
112 | struct nd_opt_hdr *nd_opt_array[__ND_OPT_ARRAY_MAX]; | |
113 | #ifdef CONFIG_IPV6_ROUTE_INFO | |
114 | struct nd_opt_hdr *nd_opts_ri; | |
115 | struct nd_opt_hdr *nd_opts_ri_end; | |
116 | #endif | |
117 | struct nd_opt_hdr *nd_useropts; | |
118 | struct nd_opt_hdr *nd_useropts_end; | |
bbe5f5ce AA |
119 | #if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN) |
120 | struct nd_opt_hdr *nd_802154_opt_array[ND_OPT_TARGET_LL_ADDR + 1]; | |
121 | #endif | |
30f2a5f3 DM |
122 | }; |
123 | ||
bbe5f5ce AA |
124 | #define nd_opts_src_lladdr nd_opt_array[ND_OPT_SOURCE_LL_ADDR] |
125 | #define nd_opts_tgt_lladdr nd_opt_array[ND_OPT_TARGET_LL_ADDR] | |
126 | #define nd_opts_pi nd_opt_array[ND_OPT_PREFIX_INFO] | |
127 | #define nd_opts_pi_end nd_opt_array[__ND_OPT_PREFIX_INFO_END] | |
128 | #define nd_opts_rh nd_opt_array[ND_OPT_REDIRECT_HDR] | |
129 | #define nd_opts_mtu nd_opt_array[ND_OPT_MTU] | |
adc176c5 | 130 | #define nd_opts_nonce nd_opt_array[ND_OPT_NONCE] |
bbe5f5ce AA |
131 | #define nd_802154_opts_src_lladdr nd_802154_opt_array[ND_OPT_SOURCE_LL_ADDR] |
132 | #define nd_802154_opts_tgt_lladdr nd_802154_opt_array[ND_OPT_TARGET_LL_ADDR] | |
30f2a5f3 DM |
133 | |
134 | #define NDISC_OPT_SPACE(len) (((len)+2+7)&~7) | |
135 | ||
f997c55c AA |
136 | struct ndisc_options *ndisc_parse_options(const struct net_device *dev, |
137 | u8 *opt, int opt_len, | |
3cc818a2 | 138 | struct ndisc_options *ndopts); |
30f2a5f3 | 139 | |
cc84b3c6 AA |
140 | void __ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data, |
141 | int data_len, int pad); | |
142 | ||
f997c55c AA |
143 | #define NDISC_OPS_REDIRECT_DATA_SPACE 2 |
144 | ||
145 | /* | |
146 | * This structure defines the hooks for IPv6 neighbour discovery. | |
147 | * The following hooks can be defined; unless noted otherwise, they are | |
148 | * optional and can be filled with a null pointer. | |
149 | * | |
150 | * int (*is_useropt)(u8 nd_opt_type): | |
151 | * This function is called when IPv6 decide RA userspace options. if | |
152 | * this function returns 1 then the option given by nd_opt_type will | |
153 | * be handled as userspace option additional to the IPv6 options. | |
154 | * | |
155 | * int (*parse_options)(const struct net_device *dev, | |
156 | * struct nd_opt_hdr *nd_opt, | |
157 | * struct ndisc_options *ndopts): | |
158 | * This function is called while parsing ndisc ops and put each position | |
159 | * as pointer into ndopts. If this function return unequal 0, then this | |
160 | * function took care about the ndisc option, if 0 then the IPv6 ndisc | |
161 | * option parser will take care about that option. | |
162 | * | |
163 | * void (*update)(const struct net_device *dev, struct neighbour *n, | |
164 | * u32 flags, u8 icmp6_type, | |
165 | * const struct ndisc_options *ndopts): | |
166 | * This function is called when IPv6 ndisc updates the neighbour cache | |
167 | * entry. Additional options which can be updated may be previously | |
168 | * parsed by parse_opts callback and accessible over ndopts parameter. | |
169 | * | |
170 | * int (*opt_addr_space)(const struct net_device *dev, u8 icmp6_type, | |
171 | * struct neighbour *neigh, u8 *ha_buf, | |
172 | * u8 **ha): | |
173 | * This function is called when the necessary option space will be | |
174 | * calculated before allocating a skb. The parameters neigh, ha_buf | |
175 | * abd ha are available on NDISC_REDIRECT messages only. | |
176 | * | |
177 | * void (*fill_addr_option)(const struct net_device *dev, | |
178 | * struct sk_buff *skb, u8 icmp6_type, | |
179 | * const u8 *ha): | |
180 | * This function is called when the skb will finally fill the option | |
181 | * fields inside skb. NOTE: this callback should fill the option | |
182 | * fields to the skb which are previously indicated by opt_space | |
183 | * parameter. That means the decision to add such option should | |
184 | * not lost between these two callbacks, e.g. protected by interface | |
185 | * up state. | |
186 | * | |
187 | * void (*prefix_rcv_add_addr)(struct net *net, struct net_device *dev, | |
188 | * const struct prefix_info *pinfo, | |
189 | * struct inet6_dev *in6_dev, | |
190 | * struct in6_addr *addr, | |
191 | * int addr_type, u32 addr_flags, | |
192 | * bool sllao, bool tokenized, | |
193 | * __u32 valid_lft, u32 prefered_lft, | |
194 | * bool dev_addr_generated): | |
195 | * This function is called when a RA messages is received with valid | |
196 | * PIO option fields and an IPv6 address will be added to the interface | |
197 | * for autoconfiguration. The parameter dev_addr_generated reports about | |
198 | * if the address was based on dev->dev_addr or not. This can be used | |
199 | * to add a second address if link-layer operates with two link layer | |
200 | * addresses. E.g. 802.15.4 6LoWPAN. | |
201 | */ | |
202 | struct ndisc_ops { | |
203 | int (*is_useropt)(u8 nd_opt_type); | |
204 | int (*parse_options)(const struct net_device *dev, | |
205 | struct nd_opt_hdr *nd_opt, | |
206 | struct ndisc_options *ndopts); | |
207 | void (*update)(const struct net_device *dev, struct neighbour *n, | |
208 | u32 flags, u8 icmp6_type, | |
209 | const struct ndisc_options *ndopts); | |
210 | int (*opt_addr_space)(const struct net_device *dev, u8 icmp6_type, | |
211 | struct neighbour *neigh, u8 *ha_buf, | |
212 | u8 **ha); | |
213 | void (*fill_addr_option)(const struct net_device *dev, | |
214 | struct sk_buff *skb, u8 icmp6_type, | |
215 | const u8 *ha); | |
216 | void (*prefix_rcv_add_addr)(struct net *net, struct net_device *dev, | |
217 | const struct prefix_info *pinfo, | |
218 | struct inet6_dev *in6_dev, | |
219 | struct in6_addr *addr, | |
220 | int addr_type, u32 addr_flags, | |
221 | bool sllao, bool tokenized, | |
222 | __u32 valid_lft, u32 prefered_lft, | |
223 | bool dev_addr_generated); | |
224 | }; | |
225 | ||
226 | #if IS_ENABLED(CONFIG_IPV6) | |
227 | static inline int ndisc_ops_is_useropt(const struct net_device *dev, | |
228 | u8 nd_opt_type) | |
229 | { | |
230 | if (dev->ndisc_ops && dev->ndisc_ops->is_useropt) | |
231 | return dev->ndisc_ops->is_useropt(nd_opt_type); | |
232 | else | |
233 | return 0; | |
234 | } | |
235 | ||
236 | static inline int ndisc_ops_parse_options(const struct net_device *dev, | |
237 | struct nd_opt_hdr *nd_opt, | |
238 | struct ndisc_options *ndopts) | |
239 | { | |
240 | if (dev->ndisc_ops && dev->ndisc_ops->parse_options) | |
241 | return dev->ndisc_ops->parse_options(dev, nd_opt, ndopts); | |
242 | else | |
243 | return 0; | |
244 | } | |
245 | ||
246 | static inline void ndisc_ops_update(const struct net_device *dev, | |
247 | struct neighbour *n, u32 flags, | |
248 | u8 icmp6_type, | |
249 | const struct ndisc_options *ndopts) | |
250 | { | |
251 | if (dev->ndisc_ops && dev->ndisc_ops->update) | |
252 | dev->ndisc_ops->update(dev, n, flags, icmp6_type, ndopts); | |
253 | } | |
254 | ||
255 | static inline int ndisc_ops_opt_addr_space(const struct net_device *dev, | |
256 | u8 icmp6_type) | |
257 | { | |
258 | if (dev->ndisc_ops && dev->ndisc_ops->opt_addr_space && | |
259 | icmp6_type != NDISC_REDIRECT) | |
260 | return dev->ndisc_ops->opt_addr_space(dev, icmp6_type, NULL, | |
261 | NULL, NULL); | |
262 | else | |
263 | return 0; | |
264 | } | |
265 | ||
266 | static inline int ndisc_ops_redirect_opt_addr_space(const struct net_device *dev, | |
267 | struct neighbour *neigh, | |
268 | u8 *ha_buf, u8 **ha) | |
269 | { | |
270 | if (dev->ndisc_ops && dev->ndisc_ops->opt_addr_space) | |
271 | return dev->ndisc_ops->opt_addr_space(dev, NDISC_REDIRECT, | |
272 | neigh, ha_buf, ha); | |
273 | else | |
274 | return 0; | |
275 | } | |
276 | ||
277 | static inline void ndisc_ops_fill_addr_option(const struct net_device *dev, | |
278 | struct sk_buff *skb, | |
279 | u8 icmp6_type) | |
280 | { | |
281 | if (dev->ndisc_ops && dev->ndisc_ops->fill_addr_option && | |
282 | icmp6_type != NDISC_REDIRECT) | |
283 | dev->ndisc_ops->fill_addr_option(dev, skb, icmp6_type, NULL); | |
284 | } | |
285 | ||
286 | static inline void ndisc_ops_fill_redirect_addr_option(const struct net_device *dev, | |
287 | struct sk_buff *skb, | |
288 | const u8 *ha) | |
289 | { | |
290 | if (dev->ndisc_ops && dev->ndisc_ops->fill_addr_option) | |
291 | dev->ndisc_ops->fill_addr_option(dev, skb, NDISC_REDIRECT, ha); | |
292 | } | |
293 | ||
294 | static inline void ndisc_ops_prefix_rcv_add_addr(struct net *net, | |
295 | struct net_device *dev, | |
296 | const struct prefix_info *pinfo, | |
297 | struct inet6_dev *in6_dev, | |
298 | struct in6_addr *addr, | |
299 | int addr_type, u32 addr_flags, | |
300 | bool sllao, bool tokenized, | |
301 | __u32 valid_lft, | |
302 | u32 prefered_lft, | |
303 | bool dev_addr_generated) | |
304 | { | |
305 | if (dev->ndisc_ops && dev->ndisc_ops->prefix_rcv_add_addr) | |
306 | dev->ndisc_ops->prefix_rcv_add_addr(net, dev, pinfo, in6_dev, | |
307 | addr, addr_type, | |
308 | addr_flags, sllao, | |
309 | tokenized, valid_lft, | |
310 | prefered_lft, | |
311 | dev_addr_generated); | |
312 | } | |
313 | #endif | |
314 | ||
30f2a5f3 DM |
315 | /* |
316 | * Return the padding between the option length and the start of the | |
317 | * link addr. Currently only IP-over-InfiniBand needs this, although | |
318 | * if RFC 3831 IPv6-over-Fibre Channel is ever implemented it may | |
319 | * also need a pad of 2. | |
320 | */ | |
d9d10a30 | 321 | static inline int ndisc_addr_option_pad(unsigned short type) |
30f2a5f3 DM |
322 | { |
323 | switch (type) { | |
324 | case ARPHRD_INFINIBAND: return 2; | |
325 | default: return 0; | |
326 | } | |
327 | } | |
328 | ||
1e82f961 AA |
329 | static inline int __ndisc_opt_addr_space(unsigned char addr_len, int pad) |
330 | { | |
331 | return NDISC_OPT_SPACE(addr_len + pad); | |
332 | } | |
333 | ||
f997c55c AA |
334 | #if IS_ENABLED(CONFIG_IPV6) |
335 | static inline int ndisc_opt_addr_space(struct net_device *dev, u8 icmp6_type) | |
336 | { | |
337 | return __ndisc_opt_addr_space(dev->addr_len, | |
338 | ndisc_addr_option_pad(dev->type)) + | |
339 | ndisc_ops_opt_addr_space(dev, icmp6_type); | |
340 | } | |
341 | ||
342 | static inline int ndisc_redirect_opt_addr_space(struct net_device *dev, | |
343 | struct neighbour *neigh, | |
344 | u8 *ops_data_buf, | |
345 | u8 **ops_data) | |
c558e9fc | 346 | { |
1e82f961 | 347 | return __ndisc_opt_addr_space(dev->addr_len, |
f997c55c AA |
348 | ndisc_addr_option_pad(dev->type)) + |
349 | ndisc_ops_redirect_opt_addr_space(dev, neigh, ops_data_buf, | |
350 | ops_data); | |
c558e9fc | 351 | } |
f997c55c | 352 | #endif |
c558e9fc | 353 | |
4f36ce84 AA |
354 | static inline u8 *__ndisc_opt_addr_data(struct nd_opt_hdr *p, |
355 | unsigned char addr_len, int prepad) | |
30f2a5f3 DM |
356 | { |
357 | u8 *lladdr = (u8 *)(p + 1); | |
358 | int lladdrlen = p->nd_opt_len << 3; | |
4f36ce84 | 359 | if (lladdrlen != __ndisc_opt_addr_space(addr_len, prepad)) |
30f2a5f3 DM |
360 | return NULL; |
361 | return lladdr + prepad; | |
362 | } | |
363 | ||
4f36ce84 AA |
364 | static inline u8 *ndisc_opt_addr_data(struct nd_opt_hdr *p, |
365 | struct net_device *dev) | |
366 | { | |
367 | return __ndisc_opt_addr_data(p, dev->addr_len, | |
368 | ndisc_addr_option_pad(dev->type)); | |
369 | } | |
370 | ||
2c2aba6c DM |
371 | static inline u32 ndisc_hashfn(const void *pkey, const struct net_device *dev, __u32 *hash_rnd) |
372 | { | |
373 | const u32 *p32 = pkey; | |
374 | ||
b14f243a | 375 | return (((p32[0] ^ hash32_ptr(dev)) * hash_rnd[0]) + |
2c2aba6c DM |
376 | (p32[1] * hash_rnd[1]) + |
377 | (p32[2] * hash_rnd[2]) + | |
378 | (p32[3] * hash_rnd[3])); | |
379 | } | |
1da177e4 | 380 | |
ac3175fe | 381 | static inline struct neighbour *__ipv6_neigh_lookup_noref(struct net_device *dev, const void *pkey) |
f83c7790 | 382 | { |
60395a20 | 383 | return ___neigh_lookup_noref(&nd_tbl, neigh_key_eq128, ndisc_hashfn, pkey, dev); |
ac3175fe YH |
384 | } |
385 | ||
71df5777 DA |
386 | static inline |
387 | struct neighbour *__ipv6_neigh_lookup_noref_stub(struct net_device *dev, | |
388 | const void *pkey) | |
389 | { | |
390 | return ___neigh_lookup_noref(ipv6_stub->nd_tbl, neigh_key_eq128, | |
391 | ndisc_hashfn, pkey, dev); | |
392 | } | |
393 | ||
ac3175fe YH |
394 | static inline struct neighbour *__ipv6_neigh_lookup(struct net_device *dev, const void *pkey) |
395 | { | |
396 | struct neighbour *n; | |
397 | ||
398 | rcu_read_lock_bh(); | |
399 | n = __ipv6_neigh_lookup_noref(dev, pkey); | |
9f237430 | 400 | if (n && !refcount_inc_not_zero(&n->refcnt)) |
ac3175fe | 401 | n = NULL; |
f83c7790 DM |
402 | rcu_read_unlock_bh(); |
403 | ||
404 | return n; | |
405 | } | |
406 | ||
63fca65d JA |
407 | static inline void __ipv6_confirm_neigh(struct net_device *dev, |
408 | const void *pkey) | |
409 | { | |
410 | struct neighbour *n; | |
411 | ||
412 | rcu_read_lock_bh(); | |
413 | n = __ipv6_neigh_lookup_noref(dev, pkey); | |
414 | if (n) { | |
415 | unsigned long now = jiffies; | |
416 | ||
417 | /* avoid dirtying neighbour */ | |
25c7a6d1 ED |
418 | if (READ_ONCE(n->confirmed) != now) |
419 | WRITE_ONCE(n->confirmed, now); | |
63fca65d JA |
420 | } |
421 | rcu_read_unlock_bh(); | |
422 | } | |
423 | ||
71df5777 DA |
424 | static inline void __ipv6_confirm_neigh_stub(struct net_device *dev, |
425 | const void *pkey) | |
426 | { | |
427 | struct neighbour *n; | |
428 | ||
429 | rcu_read_lock_bh(); | |
430 | n = __ipv6_neigh_lookup_noref_stub(dev, pkey); | |
431 | if (n) { | |
432 | unsigned long now = jiffies; | |
433 | ||
434 | /* avoid dirtying neighbour */ | |
25c7a6d1 ED |
435 | if (READ_ONCE(n->confirmed) != now) |
436 | WRITE_ONCE(n->confirmed, now); | |
71df5777 DA |
437 | } |
438 | rcu_read_unlock_bh(); | |
439 | } | |
440 | ||
441 | /* uses ipv6_stub and is meant for use outside of IPv6 core */ | |
442 | static inline struct neighbour *ip_neigh_gw6(struct net_device *dev, | |
443 | const void *addr) | |
444 | { | |
445 | struct neighbour *neigh; | |
446 | ||
447 | neigh = __ipv6_neigh_lookup_noref_stub(dev, addr); | |
448 | if (unlikely(!neigh)) | |
449 | neigh = __neigh_create(ipv6_stub->nd_tbl, addr, dev, false); | |
450 | ||
451 | return neigh; | |
452 | } | |
453 | ||
3cc818a2 JP |
454 | int ndisc_init(void); |
455 | int ndisc_late_init(void); | |
1da177e4 | 456 | |
3cc818a2 JP |
457 | void ndisc_late_cleanup(void); |
458 | void ndisc_cleanup(void); | |
1da177e4 | 459 | |
3cc818a2 | 460 | int ndisc_rcv(struct sk_buff *skb); |
1da177e4 | 461 | |
38cf595b | 462 | void ndisc_send_ns(struct net_device *dev, const struct in6_addr *solicit, |
adc176c5 EN |
463 | const struct in6_addr *daddr, const struct in6_addr *saddr, |
464 | u64 nonce); | |
1da177e4 | 465 | |
3cc818a2 JP |
466 | void ndisc_send_rs(struct net_device *dev, |
467 | const struct in6_addr *saddr, const struct in6_addr *daddr); | |
38cf595b | 468 | void ndisc_send_na(struct net_device *dev, const struct in6_addr *daddr, |
3cc818a2 JP |
469 | const struct in6_addr *solicited_addr, |
470 | bool router, bool solicited, bool override, bool inc_opt); | |
1da177e4 | 471 | |
3cc818a2 | 472 | void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target); |
1da177e4 | 473 | |
3cc818a2 JP |
474 | int ndisc_mc_map(const struct in6_addr *addr, char *buf, struct net_device *dev, |
475 | int dir); | |
1da177e4 | 476 | |
f997c55c AA |
477 | void ndisc_update(const struct net_device *dev, struct neighbour *neigh, |
478 | const u8 *lladdr, u8 new, u32 flags, u8 icmp6_type, | |
479 | struct ndisc_options *ndopts); | |
1da177e4 LT |
480 | |
481 | /* | |
482 | * IGMP | |
483 | */ | |
3cc818a2 | 484 | int igmp6_init(void); |
382ed724 | 485 | int igmp6_late_init(void); |
1da177e4 | 486 | |
3cc818a2 | 487 | void igmp6_cleanup(void); |
382ed724 | 488 | void igmp6_late_cleanup(void); |
1da177e4 | 489 | |
3cc818a2 | 490 | int igmp6_event_query(struct sk_buff *skb); |
1da177e4 | 491 | |
3cc818a2 | 492 | int igmp6_event_report(struct sk_buff *skb); |
1da177e4 | 493 | |
1da177e4 LT |
494 | |
495 | #ifdef CONFIG_SYSCTL | |
3cc818a2 | 496 | int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl, int write, |
3622adb0 | 497 | void *buffer, size_t *lenp, loff_t *ppos); |
fedaf4ff | 498 | int ndisc_ifinfo_sysctl_strategy(struct ctl_table *ctl, |
f221e726 | 499 | void __user *oldval, size_t __user *oldlenp, |
0686caa3 | 500 | void __user *newval, size_t newlen); |
1da177e4 LT |
501 | #endif |
502 | ||
3cc818a2 | 503 | void inet6_ifinfo_notify(int event, struct inet6_dev *idev); |
1da177e4 | 504 | |
1da177e4 | 505 | #endif |