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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _IPV6_H
2#define _IPV6_H
3
Jaswinder Singh Rajput5c6aa2b2009-01-30 21:46:43 +05304#include <linux/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07005#include <linux/in6.h>
6#include <asm/byteorder.h>
7
8/* The latest drafts declared increase in minimal mtu up to 1280. */
9
10#define IPV6_MIN_MTU 1280
11
12/*
13 * Advanced API
14 * source interface/address selection, source routing, etc...
15 * *under construction*
16 */
17
18
19struct in6_pktinfo {
20 struct in6_addr ipi6_addr;
21 int ipi6_ifindex;
22};
23
24
25struct in6_ifreq {
26 struct in6_addr ifr6_addr;
27 __u32 ifr6_prefixlen;
28 int ifr6_ifindex;
29};
30
YOSHIFUJI Hideakibb4dbf92007-07-10 22:55:49 -070031#define IPV6_SRCRT_STRICT 0x01 /* Deprecated; will be removed */
32#define IPV6_SRCRT_TYPE_0 0 /* Deprecated; will be removed */
Noriaki TAKAMIYA642ec622006-08-23 19:15:07 -070033#define IPV6_SRCRT_TYPE_2 2 /* IPv6 type 2 Routing Header */
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
35/*
36 * routing header
37 */
38struct ipv6_rt_hdr {
39 __u8 nexthdr;
40 __u8 hdrlen;
41 __u8 type;
42 __u8 segments_left;
43
44 /*
45 * type specific data
46 * variable length field
47 */
48};
49
50
51struct ipv6_opt_hdr {
52 __u8 nexthdr;
53 __u8 hdrlen;
54 /*
55 * TLV encoded option data follows.
56 */
YOSHIFUJI Hideaki7cd636f2008-04-13 23:33:52 -070057} __attribute__ ((packed)); /* required for some archs */
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
59#define ipv6_destopt_hdr ipv6_opt_hdr
60#define ipv6_hopopt_hdr ipv6_opt_hdr
61
62#ifdef __KERNEL__
63#define ipv6_optlen(p) (((p)->hdrlen+1) << 3)
64#endif
65
66/*
67 * routing header type 0 (used in cmsghdr struct)
68 */
69
70struct rt0_hdr {
71 struct ipv6_rt_hdr rt_hdr;
Brian Haleye6df4392005-09-10 00:15:06 -070072 __u32 reserved;
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 struct in6_addr addr[0];
74
75#define rt0_type rt_hdr.type
76};
77
Noriaki TAKAMIYA642ec622006-08-23 19:15:07 -070078/*
79 * routing header type 2
80 */
81
82struct rt2_hdr {
83 struct ipv6_rt_hdr rt_hdr;
84 __u32 reserved;
85 struct in6_addr addr;
86
87#define rt2_type rt_hdr.type
88};
89
Noriaki TAKAMIYA842426e2006-08-23 19:21:34 -070090/*
91 * home address option in destination options header
92 */
93
94struct ipv6_destopt_hao {
95 __u8 type;
96 __u8 length;
97 struct in6_addr addr;
98} __attribute__ ((__packed__));
99
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100/*
101 * IPv6 fixed header
102 *
103 * BEWARE, it is incorrect. The first 4 bits of flow_lbl
104 * are glued to priority now, forming "class".
105 */
106
107struct ipv6hdr {
108#if defined(__LITTLE_ENDIAN_BITFIELD)
109 __u8 priority:4,
110 version:4;
111#elif defined(__BIG_ENDIAN_BITFIELD)
112 __u8 version:4,
113 priority:4;
114#else
115#error "Please fix <asm/byteorder.h>"
116#endif
117 __u8 flow_lbl[3];
118
Al Viro43505072006-09-27 18:45:11 -0700119 __be16 payload_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120 __u8 nexthdr;
121 __u8 hop_limit;
122
123 struct in6_addr saddr;
124 struct in6_addr daddr;
125};
126
David S. Millerebb36a92008-07-21 13:41:16 -0700127#ifdef __KERNEL__
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128/*
129 * This structure contains configuration options per IPv6 link.
130 */
131struct ipv6_devconf {
132 __s32 forwarding;
133 __s32 hop_limit;
134 __s32 mtu6;
135 __s32 accept_ra;
136 __s32 accept_redirects;
137 __s32 autoconf;
138 __s32 dad_transmits;
139 __s32 rtr_solicits;
140 __s32 rtr_solicit_interval;
141 __s32 rtr_solicit_delay;
142 __s32 force_mld_version;
143#ifdef CONFIG_IPV6_PRIVACY
144 __s32 use_tempaddr;
145 __s32 temp_valid_lft;
146 __s32 temp_prefered_lft;
147 __s32 regen_max_retry;
148 __s32 max_desync_factor;
149#endif
150 __s32 max_addresses;
YOSHIFUJI Hideaki65f5c7c2006-03-20 16:55:08 -0800151 __s32 accept_ra_defrtr;
YOSHIFUJI Hideakic4fd30e2006-03-20 16:55:26 -0800152 __s32 accept_ra_pinfo;
YOSHIFUJI Hideaki930d6ff2006-03-20 17:05:30 -0800153#ifdef CONFIG_IPV6_ROUTER_PREF
154 __s32 accept_ra_rtr_pref;
YOSHIFUJI Hideaki52e16352006-03-20 17:05:47 -0800155 __s32 rtr_probe_interval;
YOSHIFUJI Hideaki09c884d2006-03-20 17:07:03 -0800156#ifdef CONFIG_IPV6_ROUTE_INFO
157 __s32 accept_ra_rt_info_max_plen;
158#endif
YOSHIFUJI Hideaki930d6ff2006-03-20 17:05:30 -0800159#endif
YOSHIFUJI Hideakifbea49e2006-09-22 14:43:49 -0700160 __s32 proxy_ndp;
YOSHIFUJI Hideaki0bcbc922007-04-24 14:58:30 -0700161 __s32 accept_source_route;
Neil Horman95c385b2007-04-25 17:08:10 -0700162#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
163 __s32 optimistic_dad;
164#endif
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900165#ifdef CONFIG_IPV6_MROUTE
166 __s32 mc_forwarding;
167#endif
YOSHIFUJI Hideaki778d80b2008-06-28 14:17:11 +0900168 __s32 disable_ipv6;
YOSHIFUJI Hideaki1b34be72008-06-28 14:18:38 +0900169 __s32 accept_dad;
Octavian Purdilaf7734fd2009-10-02 11:39:15 +0000170 __s32 force_tllao;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 void *sysctl;
172};
Brian Haley56d417b2009-06-01 03:07:33 -0700173
174struct ipv6_params {
175 __s32 disable_ipv6;
176 __s32 autoconf;
177};
178extern struct ipv6_params ipv6_defaults;
David S. Millerebb36a92008-07-21 13:41:16 -0700179#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180
181/* index values for the variables in ipv6_devconf */
182enum {
183 DEVCONF_FORWARDING = 0,
184 DEVCONF_HOPLIMIT,
185 DEVCONF_MTU6,
186 DEVCONF_ACCEPT_RA,
187 DEVCONF_ACCEPT_REDIRECTS,
188 DEVCONF_AUTOCONF,
189 DEVCONF_DAD_TRANSMITS,
190 DEVCONF_RTR_SOLICITS,
191 DEVCONF_RTR_SOLICIT_INTERVAL,
192 DEVCONF_RTR_SOLICIT_DELAY,
193 DEVCONF_USE_TEMPADDR,
194 DEVCONF_TEMP_VALID_LFT,
195 DEVCONF_TEMP_PREFERED_LFT,
196 DEVCONF_REGEN_MAX_RETRY,
197 DEVCONF_MAX_DESYNC_FACTOR,
198 DEVCONF_MAX_ADDRESSES,
199 DEVCONF_FORCE_MLD_VERSION,
YOSHIFUJI Hideaki65f5c7c2006-03-20 16:55:08 -0800200 DEVCONF_ACCEPT_RA_DEFRTR,
YOSHIFUJI Hideakic4fd30e2006-03-20 16:55:26 -0800201 DEVCONF_ACCEPT_RA_PINFO,
YOSHIFUJI Hideaki930d6ff2006-03-20 17:05:30 -0800202 DEVCONF_ACCEPT_RA_RTR_PREF,
YOSHIFUJI Hideaki52e16352006-03-20 17:05:47 -0800203 DEVCONF_RTR_PROBE_INTERVAL,
YOSHIFUJI Hideaki09c884d2006-03-20 17:07:03 -0800204 DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,
YOSHIFUJI Hideakifbea49e2006-09-22 14:43:49 -0700205 DEVCONF_PROXY_NDP,
Neil Horman95c385b2007-04-25 17:08:10 -0700206 DEVCONF_OPTIMISTIC_DAD,
YOSHIFUJI Hideaki45402502007-05-29 13:23:34 -0700207 DEVCONF_ACCEPT_SOURCE_ROUTE,
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900208 DEVCONF_MC_FORWARDING,
YOSHIFUJI Hideaki778d80b2008-06-28 14:17:11 +0900209 DEVCONF_DISABLE_IPV6,
YOSHIFUJI Hideaki1b34be72008-06-28 14:18:38 +0900210 DEVCONF_ACCEPT_DAD,
Jin Dongminge0e6f552009-10-08 22:44:47 -0700211 DEVCONF_FORCE_TLLAO,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 DEVCONF_MAX
213};
214
215#ifdef __KERNEL__
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216#include <linux/icmpv6.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217#include <linux/tcp.h>
218#include <linux/udp.h>
219
Arnaldo Carvalho de Melo14c85022005-12-27 02:43:12 -0200220#include <net/inet_sock.h>
221
Arnaldo Carvalho de Melo0660e032007-04-25 17:54:47 -0700222static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb)
223{
224 return (struct ipv6hdr *)skb_network_header(skb);
225}
226
Arnaldo Carvalho de Melo39b89162007-04-10 21:06:25 -0700227static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb)
228{
Arnaldo Carvalho de Melo9c702202007-04-25 18:04:18 -0700229 return (struct ipv6hdr *)skb_transport_header(skb);
Arnaldo Carvalho de Melo39b89162007-04-10 21:06:25 -0700230}
231
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232/*
233 This structure contains results of exthdrs parsing
234 as offsets from skb->nh.
235 */
236
237struct inet6_skb_parm {
238 int iif;
239 __u16 ra;
240 __u16 hop;
241 __u16 dst0;
242 __u16 srcrt;
243 __u16 dst1;
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900244 __u16 lastopt;
Patrick McHardy951dbc82006-01-06 23:02:34 -0800245 __u32 nhoff;
Patrick McHardy3e3850e2006-01-06 23:04:54 -0800246 __u16 flags;
Masahide NAKAMURA59fbb3a2007-06-26 23:56:32 -0700247#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
David S. Miller8dd73682006-08-23 19:25:55 -0700248 __u16 dsthao;
249#endif
Patrick McHardy3e3850e2006-01-06 23:04:54 -0800250
251#define IP6SKB_XFRM_TRANSFORMED 1
YOSHIFUJI Hideaki7bc570c2008-04-03 09:22:53 +0900252#define IP6SKB_FORWARDED 2
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253};
254
255#define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb))
256
Arnaldo Carvalho de Melo505cbfc2005-08-12 09:19:38 -0300257static inline int inet6_iif(const struct sk_buff *skb)
258{
259 return IP6CB(skb)->iif;
260}
261
Arnaldo Carvalho de Meloca304b62005-12-13 23:15:40 -0800262struct inet6_request_sock {
Arnaldo Carvalho de Melo2e6599c2005-06-18 22:46:52 -0700263 struct in6_addr loc_addr;
264 struct in6_addr rmt_addr;
265 struct sk_buff *pktopts;
266 int iif;
267};
268
Arnaldo Carvalho de Meloca304b62005-12-13 23:15:40 -0800269struct tcp6_request_sock {
270 struct tcp_request_sock tcp6rsk_tcp;
271 struct inet6_request_sock tcp6rsk_inet6;
272};
Arnaldo Carvalho de Melo2e6599c2005-06-18 22:46:52 -0700273
Herbert Xu20283d82007-07-30 17:05:49 -0700274struct ipv6_mc_socklist;
275struct ipv6_ac_socklist;
276struct ipv6_fl_socklist;
277
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278/**
279 * struct ipv6_pinfo - ipv6 private area
280 *
281 * In the struct sock hierarchy (tcp6_sock, upd6_sock, etc)
282 * this _must_ be the last member, so that inet6_sk_generic
283 * is able to calculate its offset from the base struct sock
284 * by using the struct proto->slab_obj_size member. -acme
285 */
286struct ipv6_pinfo {
287 struct in6_addr saddr;
288 struct in6_addr rcv_saddr;
289 struct in6_addr daddr;
Yang Hongyangb24a2512008-12-16 02:06:23 -0800290 struct in6_pktinfo sticky_pktinfo;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 struct in6_addr *daddr_cache;
YOSHIFUJI Hideaki8e1ef0a2006-08-29 17:15:09 -0700292#ifdef CONFIG_IPV6_SUBTREES
293 struct in6_addr *saddr_cache;
294#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295
Al Viro90bcaf72006-11-08 00:25:17 -0800296 __be32 flow_label;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 __u32 frag_size;
YOSHIFUJI Hideaki1d5d2362008-03-10 10:56:55 -0400298
299 /*
300 * Packed in 16bits.
301 * Omit one shift by by putting the signed field at MSB.
302 */
303#if defined(__BIG_ENDIAN_BITFIELD)
304 __s16 hop_limit:9;
305 __u16 __unused_1:7;
306#else
307 __u16 __unused_1:7;
308 __s16 hop_limit:9;
309#endif
310
311#if defined(__BIG_ENDIAN_BITFIELD)
312 /* Packed in 16bits. */
313 __s16 mcast_hops:9;
314 __u16 __unused_2:6,
315 mc_loop:1;
316#else
317 __u16 mc_loop:1,
318 __unused_2:6;
319 __s16 mcast_hops:9;
320#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 int mcast_oif;
322
323 /* pktoption flags */
324 union {
325 struct {
YOSHIFUJI Hideaki4c752092007-05-23 13:28:48 +0900326 __u16 srcrt:1,
327 osrcrt:1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 rxinfo:1,
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900329 rxoinfo:1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 rxhlim:1,
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900331 rxohlim:1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 hopopts:1,
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900333 ohopopts:1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 dstopts:1,
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900335 odstopts:1,
YOSHIFUJI Hideaki41a1f8e2005-09-08 10:19:03 +0900336 rxflow:1,
337 rxtclass:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338 } bits;
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900339 __u16 all;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 } rxopt;
341
342 /* sockopt flags */
YOSHIFUJI Hideaki1d5d2362008-03-10 10:56:55 -0400343 __u8 recverr:1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 sndflow:1,
345 pmtudisc:2,
YOSHIFUJI Hideaki7cbca672008-03-25 09:37:42 +0900346 ipv6only:1,
347 srcprefs:3; /* 001: prefer temporary address
348 * 010: prefer public address
349 * 100: prefer care-of address
350 */
YOSHIFUJI Hideaki41a1f8e2005-09-08 10:19:03 +0900351 __u8 tclass;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352
353 __u32 dst_cookie;
354
355 struct ipv6_mc_socklist *ipv6_mc_list;
356 struct ipv6_ac_socklist *ipv6_ac_list;
357 struct ipv6_fl_socklist *ipv6_fl_list;
358
359 struct ipv6_txoptions *opt;
360 struct sk_buff *pktoptions;
361 struct {
362 struct ipv6_txoptions *opt;
YOSHIFUJI Hideaki47254742008-03-10 04:41:33 -0400363 u8 hop_limit;
364 u8 tclass;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 } cork;
366};
367
368/* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */
369struct raw6_sock {
370 /* inet_sock has to be the first member of raw6_sock */
371 struct inet_sock inet;
372 __u32 checksum; /* perform checksum */
373 __u32 offset; /* checksum offset */
374 struct icmp6_filter filter;
375 /* ipv6_pinfo has to be the last member of raw6_sock, see inet6_sk_generic */
376 struct ipv6_pinfo inet6;
377};
378
379struct udp6_sock {
380 struct udp_sock udp;
381 /* ipv6_pinfo has to be the last member of udp6_sock, see inet6_sk_generic */
382 struct ipv6_pinfo inet6;
383};
384
385struct tcp6_sock {
386 struct tcp_sock tcp;
387 /* ipv6_pinfo has to be the last member of tcp6_sock, see inet6_sk_generic */
388 struct ipv6_pinfo inet6;
389};
390
Arnaldo Carvalho de Melob9750ce2005-12-13 23:22:54 -0800391extern int inet6_sk_rebuild_header(struct sock *sk);
392
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
394static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
395{
396 return inet_sk(__sk)->pinet6;
397}
398
Arnaldo Carvalho de Meloca304b62005-12-13 23:15:40 -0800399static inline struct inet6_request_sock *
400 inet6_rsk(const struct request_sock *rsk)
401{
402 return (struct inet6_request_sock *)(((u8 *)rsk) +
403 inet_rsk(rsk)->inet6_rsk_offset);
404}
405
406static inline u32 inet6_rsk_offset(struct request_sock *rsk)
407{
408 return rsk->rsk_ops->obj_size - sizeof(struct inet6_request_sock);
409}
410
411static inline struct request_sock *inet6_reqsk_alloc(struct request_sock_ops *ops)
412{
413 struct request_sock *req = reqsk_alloc(ops);
414
Arnaldo Carvalho de Meloce4a7d02008-06-10 12:39:35 -0700415 if (req != NULL) {
Arnaldo Carvalho de Meloca304b62005-12-13 23:15:40 -0800416 inet_rsk(req)->inet6_rsk_offset = inet6_rsk_offset(req);
Arnaldo Carvalho de Meloce4a7d02008-06-10 12:39:35 -0700417 inet6_rsk(req)->pktopts = NULL;
418 }
Arnaldo Carvalho de Meloca304b62005-12-13 23:15:40 -0800419
420 return req;
421}
422
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423static inline struct raw6_sock *raw6_sk(const struct sock *sk)
424{
425 return (struct raw6_sock *)sk;
426}
427
428static inline void inet_sk_copy_descendant(struct sock *sk_to,
429 const struct sock *sk_from)
430{
431 int ancestor_size = sizeof(struct inet_sock);
432
433 if (sk_from->sk_family == PF_INET6)
434 ancestor_size += sizeof(struct ipv6_pinfo);
435
436 __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size);
437}
438
439#define __ipv6_only_sock(sk) (inet6_sk(sk)->ipv6only)
440#define ipv6_only_sock(sk) ((sk)->sk_family == PF_INET6 && __ipv6_only_sock(sk))
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700441
Arnaldo Carvalho de Melo0fa1a532005-12-13 23:23:09 -0800442struct inet6_timewait_sock {
443 struct in6_addr tw_v6_daddr;
444 struct in6_addr tw_v6_rcv_saddr;
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700445};
446
Arnaldo Carvalho de Melo0fa1a532005-12-13 23:23:09 -0800447struct tcp6_timewait_sock {
448 struct tcp_timewait_sock tcp6tw_tcp;
449 struct inet6_timewait_sock tcp6tw_inet6;
450};
451
452static inline u16 inet6_tw_offset(const struct proto *prot)
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700453{
Arnaldo Carvalho de Melo6d6ee432005-12-13 23:25:19 -0800454 return prot->twsk_prot->twsk_obj_size -
455 sizeof(struct inet6_timewait_sock);
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700456}
457
Arnaldo Carvalho de Melo0fa1a532005-12-13 23:23:09 -0800458static inline struct inet6_timewait_sock *inet6_twsk(const struct sock *sk)
459{
460 return (struct inet6_timewait_sock *)(((u8 *)sk) +
461 inet_twsk(sk)->tw_ipv6_offset);
462}
463
464static inline struct in6_addr *__inet6_rcv_saddr(const struct sock *sk)
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700465{
466 return likely(sk->sk_state != TCP_TIME_WAIT) ?
Arnaldo Carvalho de Melo0fa1a532005-12-13 23:23:09 -0800467 &inet6_sk(sk)->rcv_saddr : &inet6_twsk(sk)->tw_v6_rcv_saddr;
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700468}
469
Arnaldo Carvalho de Melo0fa1a532005-12-13 23:23:09 -0800470static inline struct in6_addr *inet6_rcv_saddr(const struct sock *sk)
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700471{
Arnaldo Carvalho de Melo0fa1a532005-12-13 23:23:09 -0800472 return sk->sk_family == AF_INET6 ? __inet6_rcv_saddr(sk) : NULL;
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700473}
474
Arnaldo Carvalho de Melo463c84b2005-08-09 20:10:42 -0700475static inline int inet_v6_ipv6only(const struct sock *sk)
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700476{
477 return likely(sk->sk_state != TCP_TIME_WAIT) ?
Arnaldo Carvalho de Melo3f421ba2005-08-09 20:11:08 -0700478 ipv6_only_sock(sk) : inet_twsk(sk)->tw_ipv6only;
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700479}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480#else
481#define __ipv6_only_sock(sk) 0
482#define ipv6_only_sock(sk) 0
483
484static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
485{
486 return NULL;
487}
488
Arnaldo Carvalho de Meloca304b62005-12-13 23:15:40 -0800489static inline struct inet6_request_sock *
490 inet6_rsk(const struct request_sock *rsk)
491{
492 return NULL;
493}
494
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495static inline struct raw6_sock *raw6_sk(const struct sock *sk)
496{
497 return NULL;
498}
499
Arnaldo Carvalho de Melo0fa1a532005-12-13 23:23:09 -0800500#define __inet6_rcv_saddr(__sk) NULL
501#define inet6_rcv_saddr(__sk) NULL
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700502#define tcp_twsk_ipv6only(__sk) 0
Arnaldo Carvalho de Melo463c84b2005-08-09 20:10:42 -0700503#define inet_v6_ipv6only(__sk) 0
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700504#endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505
Pavel Emelyanovd86e0da2008-01-31 05:07:21 -0800506#define INET6_MATCH(__sk, __net, __hash, __saddr, __daddr, __ports, __dif)\
YOSHIFUJI Hideaki3b1e0a62008-03-26 02:26:21 +0900507 (((__sk)->sk_hash == (__hash)) && sock_net((__sk)) == (__net) && \
Eric Dumazetc720c7e2009-10-15 06:30:45 +0000508 ((*((__portpair *)&(inet_sk(__sk)->inet_dport))) == (__ports)) && \
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700509 ((__sk)->sk_family == AF_INET6) && \
510 ipv6_addr_equal(&inet6_sk(__sk)->daddr, (__saddr)) && \
511 ipv6_addr_equal(&inet6_sk(__sk)->rcv_saddr, (__daddr)) && \
512 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513
Pavel Emelyanovd86e0da2008-01-31 05:07:21 -0800514#define INET6_TW_MATCH(__sk, __net, __hash, __saddr, __daddr, __ports, __dif) \
YOSHIFUJI Hideaki3b1e0a62008-03-26 02:26:21 +0900515 (((__sk)->sk_hash == (__hash)) && sock_net((__sk)) == (__net) && \
Pavel Emelyanov535174e2008-01-31 05:03:27 -0800516 (*((__portpair *)&(inet_twsk(__sk)->tw_dport)) == (__ports)) && \
517 ((__sk)->sk_family == PF_INET6) && \
518 (ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_daddr, (__saddr))) && \
519 (ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_rcv_saddr, (__daddr))) && \
520 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
521
Arnaldo Carvalho de Melo8feaf0c2005-08-09 20:09:30 -0700522#endif /* __KERNEL__ */
523
524#endif /* _IPV6_H */