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13#ifndef _NET_IPV6_H
14#define _NET_IPV6_H
15
16#include <linux/ipv6.h>
17#include <linux/hardirq.h>
18#include <linux/jhash.h>
19#include <net/if_inet6.h>
20#include <net/ndisc.h>
21#include <net/flow.h>
22#include <net/snmp.h>
23
24#define SIN6_LEN_RFC2133 24
25
26#define IPV6_MAXPLEN 65535
27
28
29
30
31
32#define NEXTHDR_HOP 0
33#define NEXTHDR_TCP 6
34#define NEXTHDR_UDP 17
35#define NEXTHDR_IPV6 41
36#define NEXTHDR_ROUTING 43
37#define NEXTHDR_FRAGMENT 44
38#define NEXTHDR_GRE 47
39#define NEXTHDR_ESP 50
40#define NEXTHDR_AUTH 51
41#define NEXTHDR_ICMP 58
42#define NEXTHDR_NONE 59
43#define NEXTHDR_DEST 60
44#define NEXTHDR_SCTP 132
45#define NEXTHDR_MOBILITY 135
46
47#define NEXTHDR_MAX 255
48
49
50
51#define IPV6_DEFAULT_HOPLIMIT 64
52#define IPV6_DEFAULT_MCASTHOPS 1
53
54
55
56
57
58
59
60
61
62
63
64
65#define IPV6_ADDR_ANY 0x0000U
66
67#define IPV6_ADDR_UNICAST 0x0001U
68#define IPV6_ADDR_MULTICAST 0x0002U
69
70#define IPV6_ADDR_LOOPBACK 0x0010U
71#define IPV6_ADDR_LINKLOCAL 0x0020U
72#define IPV6_ADDR_SITELOCAL 0x0040U
73
74#define IPV6_ADDR_COMPATv4 0x0080U
75
76#define IPV6_ADDR_SCOPE_MASK 0x00f0U
77
78#define IPV6_ADDR_MAPPED 0x1000U
79
80
81
82
83#define IPV6_ADDR_MC_SCOPE(a) \
84 ((a)->s6_addr[1] & 0x0f)
85#define __IPV6_ADDR_SCOPE_INVALID -1
86#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
87#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
88#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
89#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08
90#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
91
92
93
94
95#define IPV6_ADDR_MC_FLAG_TRANSIENT(a) \
96 ((a)->s6_addr[1] & 0x10)
97#define IPV6_ADDR_MC_FLAG_PREFIX(a) \
98 ((a)->s6_addr[1] & 0x20)
99#define IPV6_ADDR_MC_FLAG_RENDEZVOUS(a) \
100 ((a)->s6_addr[1] & 0x40)
101
102
103
104
105
106struct frag_hdr {
107 __u8 nexthdr;
108 __u8 reserved;
109 __be16 frag_off;
110 __be32 identification;
111};
112
113#define IP6_MF 0x0001
114
115#include <net/sock.h>
116
117
118extern int sysctl_mld_max_msf;
119
120#define _DEVINC(net, statname, modifier, idev, field) \
121({ \
122 struct inet6_dev *_idev = (idev); \
123 if (likely(_idev != NULL)) \
124 SNMP_INC_STATS##modifier((_idev)->stats.statname, (field)); \
125 SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\
126})
127
128
129#define _DEVINCATOMIC(net, statname, modifier, idev, field) \
130({ \
131 struct inet6_dev *_idev = (idev); \
132 if (likely(_idev != NULL)) \
133 SNMP_INC_STATS_ATOMIC_LONG((_idev)->stats.statname##dev, (field)); \
134 SNMP_INC_STATS##modifier((net)->mib.statname##_statistics, (field));\
135})
136
137
138#define _DEVINC_ATOMIC_ATOMIC(net, statname, idev, field) \
139({ \
140 struct inet6_dev *_idev = (idev); \
141 if (likely(_idev != NULL)) \
142 SNMP_INC_STATS_ATOMIC_LONG((_idev)->stats.statname##dev, (field)); \
143 SNMP_INC_STATS_ATOMIC_LONG((net)->mib.statname##_statistics, (field));\
144})
145
146#define _DEVADD(net, statname, modifier, idev, field, val) \
147({ \
148 struct inet6_dev *_idev = (idev); \
149 if (likely(_idev != NULL)) \
150 SNMP_ADD_STATS##modifier((_idev)->stats.statname, (field), (val)); \
151 SNMP_ADD_STATS##modifier((net)->mib.statname##_statistics, (field), (val));\
152})
153
154#define _DEVUPD(net, statname, modifier, idev, field, val) \
155({ \
156 struct inet6_dev *_idev = (idev); \
157 if (likely(_idev != NULL)) \
158 SNMP_UPD_PO_STATS##modifier((_idev)->stats.statname, field, (val)); \
159 SNMP_UPD_PO_STATS##modifier((net)->mib.statname##_statistics, field, (val));\
160})
161
162
163
164#define IP6_INC_STATS(net, idev,field) \
165 _DEVINC(net, ipv6, 64, idev, field)
166#define IP6_INC_STATS_BH(net, idev,field) \
167 _DEVINC(net, ipv6, 64_BH, idev, field)
168#define IP6_ADD_STATS(net, idev,field,val) \
169 _DEVADD(net, ipv6, 64, idev, field, val)
170#define IP6_ADD_STATS_BH(net, idev,field,val) \
171 _DEVADD(net, ipv6, 64_BH, idev, field, val)
172#define IP6_UPD_PO_STATS(net, idev,field,val) \
173 _DEVUPD(net, ipv6, 64, idev, field, val)
174#define IP6_UPD_PO_STATS_BH(net, idev,field,val) \
175 _DEVUPD(net, ipv6, 64_BH, idev, field, val)
176#define ICMP6_INC_STATS(net, idev, field) \
177 _DEVINCATOMIC(net, icmpv6, , idev, field)
178#define ICMP6_INC_STATS_BH(net, idev, field) \
179 _DEVINCATOMIC(net, icmpv6, _BH, idev, field)
180
181#define ICMP6MSGOUT_INC_STATS(net, idev, field) \
182 _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field +256)
183#define ICMP6MSGOUT_INC_STATS_BH(net, idev, field) \
184 _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field +256)
185#define ICMP6MSGIN_INC_STATS_BH(net, idev, field) \
186 _DEVINC_ATOMIC_ATOMIC(net, icmpv6msg, idev, field)
187
188struct ip6_ra_chain {
189 struct ip6_ra_chain *next;
190 struct sock *sk;
191 int sel;
192 void (*destructor)(struct sock *);
193};
194
195extern struct ip6_ra_chain *ip6_ra_chain;
196extern rwlock_t ip6_ra_lock;
197
198
199
200
201
202
203struct ipv6_txoptions {
204
205 int tot_len;
206
207
208
209 __u16 opt_flen;
210 __u16 opt_nflen;
211
212 struct ipv6_opt_hdr *hopopt;
213 struct ipv6_opt_hdr *dst0opt;
214 struct ipv6_rt_hdr *srcrt;
215 struct ipv6_opt_hdr *dst1opt;
216
217
218};
219
220struct ip6_flowlabel {
221 struct ip6_flowlabel __rcu *next;
222 __be32 label;
223 atomic_t users;
224 struct in6_addr dst;
225 struct ipv6_txoptions *opt;
226 unsigned long linger;
227 struct rcu_head rcu;
228 u8 share;
229 union {
230 struct pid *pid;
231 kuid_t uid;
232 } owner;
233 unsigned long lastuse;
234 unsigned long expires;
235 struct net *fl_net;
236};
237
238#define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF)
239#define IPV6_FLOWLABEL_MASK cpu_to_be32(0x000FFFFF)
240
241struct ipv6_fl_socklist {
242 struct ipv6_fl_socklist __rcu *next;
243 struct ip6_flowlabel *fl;
244 struct rcu_head rcu;
245};
246
247extern struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label);
248extern struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions * opt_space,
249 struct ip6_flowlabel * fl,
250 struct ipv6_txoptions * fopt);
251extern void fl6_free_socklist(struct sock *sk);
252extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
253extern int ip6_flowlabel_init(void);
254extern void ip6_flowlabel_cleanup(void);
255
256static inline void fl6_sock_release(struct ip6_flowlabel *fl)
257{
258 if (fl)
259 atomic_dec(&fl->users);
260}
261
262extern void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info);
263
264int icmpv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6,
265 struct icmp6hdr *thdr, int len);
266
267struct dst_entry *icmpv6_route_lookup(struct net *net, struct sk_buff *skb,
268 struct sock *sk, struct flowi6 *fl6);
269
270extern int ip6_ra_control(struct sock *sk, int sel);
271
272extern int ipv6_parse_hopopts(struct sk_buff *skb);
273
274extern struct ipv6_txoptions * ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
275extern struct ipv6_txoptions * ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
276 int newtype,
277 struct ipv6_opt_hdr __user *newopt,
278 int newoptlen);
279struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
280 struct ipv6_txoptions *opt);
281
282extern bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb);
283
284static inline bool ipv6_accept_ra(struct inet6_dev *idev)
285{
286
287
288
289 return idev->cnf.forwarding ? idev->cnf.accept_ra == 2 :
290 idev->cnf.accept_ra;
291}
292
293#if IS_ENABLED(CONFIG_IPV6)
294static inline int ip6_frag_nqueues(struct net *net)
295{
296 return net->ipv6.frags.nqueues;
297}
298
299static inline int ip6_frag_mem(struct net *net)
300{
301 return sum_frag_mem_limit(&net->ipv6.frags);
302}
303#endif
304
305#define IPV6_FRAG_HIGH_THRESH (4 * 1024*1024)
306#define IPV6_FRAG_LOW_THRESH (3 * 1024*1024)
307#define IPV6_FRAG_TIMEOUT (60 * HZ)
308
309extern int __ipv6_addr_type(const struct in6_addr *addr);
310static inline int ipv6_addr_type(const struct in6_addr *addr)
311{
312 return __ipv6_addr_type(addr) & 0xffff;
313}
314
315static inline int ipv6_addr_scope(const struct in6_addr *addr)
316{
317 return __ipv6_addr_type(addr) & IPV6_ADDR_SCOPE_MASK;
318}
319
320static inline int __ipv6_addr_src_scope(int type)
321{
322 return (type == IPV6_ADDR_ANY) ? __IPV6_ADDR_SCOPE_INVALID : (type >> 16);
323}
324
325static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
326{
327 return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
328}
329
330static inline bool __ipv6_addr_needs_scope_id(int type)
331{
332 return type & IPV6_ADDR_LINKLOCAL ||
333 (type & IPV6_ADDR_MULTICAST &&
334 (type & (IPV6_ADDR_LOOPBACK|IPV6_ADDR_LINKLOCAL)));
335}
336
337static inline __u32 ipv6_iface_scope_id(const struct in6_addr *addr, int iface)
338{
339 return __ipv6_addr_needs_scope_id(__ipv6_addr_type(addr)) ? iface : 0;
340}
341
342static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
343{
344 return memcmp(a1, a2, sizeof(struct in6_addr));
345}
346
347static inline bool
348ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m,
349 const struct in6_addr *a2)
350{
351#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
352 const unsigned long *ul1 = (const unsigned long *)a1;
353 const unsigned long *ulm = (const unsigned long *)m;
354 const unsigned long *ul2 = (const unsigned long *)a2;
355
356 return !!(((ul1[0] ^ ul2[0]) & ulm[0]) |
357 ((ul1[1] ^ ul2[1]) & ulm[1]));
358#else
359 return !!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) |
360 ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) |
361 ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) |
362 ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3]));
363#endif
364}
365
366static inline void ipv6_addr_prefix(struct in6_addr *pfx,
367 const struct in6_addr *addr,
368 int plen)
369{
370
371 int o = plen >> 3,
372 b = plen & 0x7;
373
374 memset(pfx->s6_addr, 0, sizeof(pfx->s6_addr));
375 memcpy(pfx->s6_addr, addr, o);
376 if (b != 0)
377 pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
378}
379
380static inline void __ipv6_addr_set_half(__be32 *addr,
381 __be32 wh, __be32 wl)
382{
383#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
384#if defined(__BIG_ENDIAN)
385 if (__builtin_constant_p(wh) && __builtin_constant_p(wl)) {
386 *(__force u64 *)addr = ((__force u64)(wh) << 32 | (__force u64)(wl));
387 return;
388 }
389#elif defined(__LITTLE_ENDIAN)
390 if (__builtin_constant_p(wl) && __builtin_constant_p(wh)) {
391 *(__force u64 *)addr = ((__force u64)(wl) << 32 | (__force u64)(wh));
392 return;
393 }
394#endif
395#endif
396 addr[0] = wh;
397 addr[1] = wl;
398}
399
400static inline void ipv6_addr_set(struct in6_addr *addr,
401 __be32 w1, __be32 w2,
402 __be32 w3, __be32 w4)
403{
404 __ipv6_addr_set_half(&addr->s6_addr32[0], w1, w2);
405 __ipv6_addr_set_half(&addr->s6_addr32[2], w3, w4);
406}
407
408static inline bool ipv6_addr_equal(const struct in6_addr *a1,
409 const struct in6_addr *a2)
410{
411#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
412 const unsigned long *ul1 = (const unsigned long *)a1;
413 const unsigned long *ul2 = (const unsigned long *)a2;
414
415 return ((ul1[0] ^ ul2[0]) | (ul1[1] ^ ul2[1])) == 0UL;
416#else
417 return ((a1->s6_addr32[0] ^ a2->s6_addr32[0]) |
418 (a1->s6_addr32[1] ^ a2->s6_addr32[1]) |
419 (a1->s6_addr32[2] ^ a2->s6_addr32[2]) |
420 (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0;
421#endif
422}
423
424#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
425static inline bool __ipv6_prefix_equal64_half(const __be64 *a1,
426 const __be64 *a2,
427 unsigned int len)
428{
429 if (len && ((*a1 ^ *a2) & cpu_to_be64((~0UL) << (64 - len))))
430 return false;
431 return true;
432}
433
434static inline bool ipv6_prefix_equal(const struct in6_addr *addr1,
435 const struct in6_addr *addr2,
436 unsigned int prefixlen)
437{
438 const __be64 *a1 = (const __be64 *)addr1;
439 const __be64 *a2 = (const __be64 *)addr2;
440
441 if (prefixlen >= 64) {
442 if (a1[0] ^ a2[0])
443 return false;
444 return __ipv6_prefix_equal64_half(a1 + 1, a2 + 1, prefixlen - 64);
445 }
446 return __ipv6_prefix_equal64_half(a1, a2, prefixlen);
447}
448#else
449static inline bool ipv6_prefix_equal(const struct in6_addr *addr1,
450 const struct in6_addr *addr2,
451 unsigned int prefixlen)
452{
453 const __be32 *a1 = addr1->s6_addr32;
454 const __be32 *a2 = addr2->s6_addr32;
455 unsigned int pdw, pbi;
456
457
458 pdw = prefixlen >> 5;
459 if (pdw && memcmp(a1, a2, pdw << 2))
460 return false;
461
462
463 pbi = prefixlen & 0x1f;
464 if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
465 return false;
466
467 return true;
468}
469#endif
470
471struct inet_frag_queue;
472
473enum ip6_defrag_users {
474 IP6_DEFRAG_LOCAL_DELIVER,
475 IP6_DEFRAG_CONNTRACK_IN,
476 __IP6_DEFRAG_CONNTRACK_IN = IP6_DEFRAG_CONNTRACK_IN + USHRT_MAX,
477 IP6_DEFRAG_CONNTRACK_OUT,
478 __IP6_DEFRAG_CONNTRACK_OUT = IP6_DEFRAG_CONNTRACK_OUT + USHRT_MAX,
479 IP6_DEFRAG_CONNTRACK_BRIDGE_IN,
480 __IP6_DEFRAG_CONNTRACK_BRIDGE_IN = IP6_DEFRAG_CONNTRACK_BRIDGE_IN + USHRT_MAX,
481};
482
483struct ip6_create_arg {
484 __be32 id;
485 u32 user;
486 const struct in6_addr *src;
487 const struct in6_addr *dst;
488 u8 ecn;
489};
490
491void ip6_frag_init(struct inet_frag_queue *q, void *a);
492bool ip6_frag_match(struct inet_frag_queue *q, void *a);
493
494
495
496
497struct frag_queue {
498 struct inet_frag_queue q;
499
500 __be32 id;
501 u32 user;
502 struct in6_addr saddr;
503 struct in6_addr daddr;
504
505 int iif;
506 unsigned int csum;
507 __u16 nhoffset;
508 u8 ecn;
509};
510
511void ip6_expire_frag_queue(struct net *net, struct frag_queue *fq,
512 struct inet_frags *frags);
513
514static inline bool ipv6_addr_any(const struct in6_addr *a)
515{
516#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
517 const unsigned long *ul = (const unsigned long *)a;
518
519 return (ul[0] | ul[1]) == 0UL;
520#else
521 return (a->s6_addr32[0] | a->s6_addr32[1] |
522 a->s6_addr32[2] | a->s6_addr32[3]) == 0;
523#endif
524}
525
526static inline u32 ipv6_addr_hash(const struct in6_addr *a)
527{
528#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
529 const unsigned long *ul = (const unsigned long *)a;
530 unsigned long x = ul[0] ^ ul[1];
531
532 return (u32)(x ^ (x >> 32));
533#else
534 return (__force u32)(a->s6_addr32[0] ^ a->s6_addr32[1] ^
535 a->s6_addr32[2] ^ a->s6_addr32[3]);
536#endif
537}
538
539
540static inline u32 ipv6_addr_jhash(const struct in6_addr *a)
541{
542 u32 v = (__force u32)a->s6_addr32[0] ^ (__force u32)a->s6_addr32[1];
543
544 return jhash_3words(v,
545 (__force u32)a->s6_addr32[2],
546 (__force u32)a->s6_addr32[3],
547 ipv6_hash_secret);
548}
549
550static inline bool ipv6_addr_loopback(const struct in6_addr *a)
551{
552#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
553 const unsigned long *ul = (const unsigned long *)a;
554
555 return (ul[0] | (ul[1] ^ cpu_to_be64(1))) == 0UL;
556#else
557 return (a->s6_addr32[0] | a->s6_addr32[1] |
558 a->s6_addr32[2] | (a->s6_addr32[3] ^ htonl(1))) == 0;
559#endif
560}
561
562static inline bool ipv6_addr_v4mapped(const struct in6_addr *a)
563{
564 return (
565#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
566 *(__be64 *)a |
567#else
568 (a->s6_addr32[0] | a->s6_addr32[1]) |
569#endif
570 (a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0UL;
571}
572
573
574
575
576
577static inline bool ipv6_addr_orchid(const struct in6_addr *a)
578{
579 return (a->s6_addr32[0] & htonl(0xfffffff0)) == htonl(0x20010010);
580}
581
582static inline void ipv6_addr_set_v4mapped(const __be32 addr,
583 struct in6_addr *v4mapped)
584{
585 ipv6_addr_set(v4mapped,
586 0, 0,
587 htonl(0x0000FFFF),
588 addr);
589}
590
591
592
593
594
595static inline int __ipv6_addr_diff32(const void *token1, const void *token2, int addrlen)
596{
597 const __be32 *a1 = token1, *a2 = token2;
598 int i;
599
600 addrlen >>= 2;
601
602 for (i = 0; i < addrlen; i++) {
603 __be32 xb = a1[i] ^ a2[i];
604 if (xb)
605 return i * 32 + 31 - __fls(ntohl(xb));
606 }
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624 return addrlen << 5;
625}
626
627#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
628static inline int __ipv6_addr_diff64(const void *token1, const void *token2, int addrlen)
629{
630 const __be64 *a1 = token1, *a2 = token2;
631 int i;
632
633 addrlen >>= 3;
634
635 for (i = 0; i < addrlen; i++) {
636 __be64 xb = a1[i] ^ a2[i];
637 if (xb)
638 return i * 64 + 63 - __fls(be64_to_cpu(xb));
639 }
640
641 return addrlen << 6;
642}
643#endif
644
645static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen)
646{
647#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
648 if (__builtin_constant_p(addrlen) && !(addrlen & 7))
649 return __ipv6_addr_diff64(token1, token2, addrlen);
650#endif
651 return __ipv6_addr_diff32(token1, token2, addrlen);
652}
653
654static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_addr *a2)
655{
656 return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr));
657}
658
659extern void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt);
660
661extern int ip6_dst_hoplimit(struct dst_entry *dst);
662
663
664
665
666static inline void ip6_flow_hdr(struct ipv6hdr *hdr, unsigned int tclass,
667 __be32 flowlabel)
668{
669 *(__be32 *)hdr = htonl(0x60000000 | (tclass << 20)) | flowlabel;
670}
671
672static inline __be32 ip6_flowinfo(const struct ipv6hdr *hdr)
673{
674 return *(__be32 *)hdr & IPV6_FLOWINFO_MASK;
675}
676
677
678
679
680
681
682
683
684
685extern int ipv6_rcv(struct sk_buff *skb,
686 struct net_device *dev,
687 struct packet_type *pt,
688 struct net_device *orig_dev);
689
690extern int ip6_rcv_finish(struct sk_buff *skb);
691
692
693
694
695extern int ip6_xmit(struct sock *sk,
696 struct sk_buff *skb,
697 struct flowi6 *fl6,
698 struct ipv6_txoptions *opt,
699 int tclass);
700
701extern int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr);
702
703extern int ip6_append_data(struct sock *sk,
704 int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb),
705 void *from,
706 int length,
707 int transhdrlen,
708 int hlimit,
709 int tclass,
710 struct ipv6_txoptions *opt,
711 struct flowi6 *fl6,
712 struct rt6_info *rt,
713 unsigned int flags,
714 int dontfrag);
715
716extern int ip6_push_pending_frames(struct sock *sk);
717
718extern void ip6_flush_pending_frames(struct sock *sk);
719
720extern int ip6_dst_lookup(struct sock *sk,
721 struct dst_entry **dst,
722 struct flowi6 *fl6);
723extern struct dst_entry * ip6_dst_lookup_flow(struct sock *sk,
724 struct flowi6 *fl6,
725 const struct in6_addr *final_dst,
726 bool can_sleep);
727extern struct dst_entry * ip6_sk_dst_lookup_flow(struct sock *sk,
728 struct flowi6 *fl6,
729 const struct in6_addr *final_dst,
730 bool can_sleep);
731extern struct dst_entry * ip6_blackhole_route(struct net *net,
732 struct dst_entry *orig_dst);
733
734
735
736
737
738extern int ip6_output(struct sk_buff *skb);
739extern int ip6_forward(struct sk_buff *skb);
740extern int ip6_input(struct sk_buff *skb);
741extern int ip6_mc_input(struct sk_buff *skb);
742
743extern int __ip6_local_out(struct sk_buff *skb);
744extern int ip6_local_out(struct sk_buff *skb);
745
746
747
748
749
750extern void ipv6_push_nfrag_opts(struct sk_buff *skb,
751 struct ipv6_txoptions *opt,
752 u8 *proto,
753 struct in6_addr **daddr_p);
754extern void ipv6_push_frag_opts(struct sk_buff *skb,
755 struct ipv6_txoptions *opt,
756 u8 *proto);
757
758extern int ipv6_skip_exthdr(const struct sk_buff *, int start,
759 u8 *nexthdrp, __be16 *frag_offp);
760
761extern bool ipv6_ext_hdr(u8 nexthdr);
762
763enum {
764 IP6_FH_F_FRAG = (1 << 0),
765 IP6_FH_F_AUTH = (1 << 1),
766 IP6_FH_F_SKIP_RH = (1 << 2),
767};
768
769
770extern int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
771 int target, unsigned short *fragoff, int *fragflg);
772
773extern int ipv6_find_tlv(struct sk_buff *skb, int offset, int type);
774
775extern struct in6_addr *fl6_update_dst(struct flowi6 *fl6,
776 const struct ipv6_txoptions *opt,
777 struct in6_addr *orig);
778
779
780
781
782
783extern int ipv6_setsockopt(struct sock *sk, int level,
784 int optname,
785 char __user *optval,
786 unsigned int optlen);
787extern int ipv6_getsockopt(struct sock *sk, int level,
788 int optname,
789 char __user *optval,
790 int __user *optlen);
791extern int compat_ipv6_setsockopt(struct sock *sk,
792 int level,
793 int optname,
794 char __user *optval,
795 unsigned int optlen);
796extern int compat_ipv6_getsockopt(struct sock *sk,
797 int level,
798 int optname,
799 char __user *optval,
800 int __user *optlen);
801
802extern int ip6_datagram_connect(struct sock *sk,
803 struct sockaddr *addr, int addr_len);
804
805extern int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len);
806extern int ipv6_recv_rxpmtu(struct sock *sk, struct msghdr *msg, int len);
807extern void ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err, __be16 port,
808 u32 info, u8 *payload);
809extern void ipv6_local_error(struct sock *sk, int err, struct flowi6 *fl6, u32 info);
810extern void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu);
811
812extern int inet6_release(struct socket *sock);
813extern int inet6_bind(struct socket *sock, struct sockaddr *uaddr,
814 int addr_len);
815extern int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
816 int *uaddr_len, int peer);
817extern int inet6_ioctl(struct socket *sock, unsigned int cmd,
818 unsigned long arg);
819
820extern int inet6_hash_connect(struct inet_timewait_death_row *death_row,
821 struct sock *sk);
822
823
824
825
826extern const struct proto_ops inet6_stream_ops;
827extern const struct proto_ops inet6_dgram_ops;
828
829struct group_source_req;
830struct group_filter;
831
832extern int ip6_mc_source(int add, int omode, struct sock *sk,
833 struct group_source_req *pgsr);
834extern int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf);
835extern int ip6_mc_msfget(struct sock *sk, struct group_filter *gsf,
836 struct group_filter __user *optval,
837 int __user *optlen);
838extern unsigned int inet6_hash_frag(__be32 id, const struct in6_addr *saddr,
839 const struct in6_addr *daddr, u32 rnd);
840
841#ifdef CONFIG_PROC_FS
842extern int ac6_proc_init(struct net *net);
843extern void ac6_proc_exit(struct net *net);
844extern int raw6_proc_init(void);
845extern void raw6_proc_exit(void);
846extern int tcp6_proc_init(struct net *net);
847extern void tcp6_proc_exit(struct net *net);
848extern int udp6_proc_init(struct net *net);
849extern void udp6_proc_exit(struct net *net);
850extern int udplite6_proc_init(void);
851extern void udplite6_proc_exit(void);
852extern int ipv6_misc_proc_init(void);
853extern void ipv6_misc_proc_exit(void);
854extern int snmp6_register_dev(struct inet6_dev *idev);
855extern int snmp6_unregister_dev(struct inet6_dev *idev);
856
857#else
858static inline int ac6_proc_init(struct net *net) { return 0; }
859static inline void ac6_proc_exit(struct net *net) { }
860static inline int snmp6_register_dev(struct inet6_dev *idev) { return 0; }
861static inline int snmp6_unregister_dev(struct inet6_dev *idev) { return 0; }
862#endif
863
864#ifdef CONFIG_SYSCTL
865extern struct ctl_table ipv6_route_table_template[];
866extern struct ctl_table ipv6_icmp_table_template[];
867
868extern struct ctl_table *ipv6_icmp_sysctl_init(struct net *net);
869extern struct ctl_table *ipv6_route_sysctl_init(struct net *net);
870extern int ipv6_sysctl_register(void);
871extern void ipv6_sysctl_unregister(void);
872#endif
873
874#endif
875
