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