5 #include <asm/byteorder.h>
7 /* The latest drafts declared increase in minimal mtu up to 1280. */
9 #define IPV6_MIN_MTU 1280
13 * source interface/address selection, source routing, etc...
14 * *under construction*
19 struct in6_addr ipi6_addr
;
25 struct in6_addr ifr6_addr
;
30 #define IPV6_SRCRT_STRICT 0x01 /* Deprecated; will be removed */
31 #define IPV6_SRCRT_TYPE_0 0 /* Deprecated; will be removed */
32 #define IPV6_SRCRT_TYPE_2 2 /* IPv6 type 2 Routing Header */
45 * variable length field
54 * TLV encoded option data follows.
56 } __attribute__ ((packed
)); /* required for some archs */
58 #define ipv6_destopt_hdr ipv6_opt_hdr
59 #define ipv6_hopopt_hdr ipv6_opt_hdr
62 #define ipv6_optlen(p) (((p)->hdrlen+1) << 3)
66 * routing header type 0 (used in cmsghdr struct)
70 struct ipv6_rt_hdr rt_hdr
;
72 struct in6_addr addr
[0];
74 #define rt0_type rt_hdr.type
78 * routing header type 2
82 struct ipv6_rt_hdr rt_hdr
;
86 #define rt2_type rt_hdr.type
90 * home address option in destination options header
93 struct ipv6_destopt_hao
{
97 } __attribute__ ((__packed__
));
102 * BEWARE, it is incorrect. The first 4 bits of flow_lbl
103 * are glued to priority now, forming "class".
107 #if defined(__LITTLE_ENDIAN_BITFIELD)
110 #elif defined(__BIG_ENDIAN_BITFIELD)
114 #error "Please fix <asm/byteorder.h>"
122 struct in6_addr saddr
;
123 struct in6_addr daddr
;
128 * This structure contains configuration options per IPv6 link.
130 struct ipv6_devconf
{
135 __s32 accept_redirects
;
139 __s32 rtr_solicit_interval
;
140 __s32 rtr_solicit_delay
;
141 __s32 force_mld_version
;
142 #ifdef CONFIG_IPV6_PRIVACY
144 __s32 temp_valid_lft
;
145 __s32 temp_prefered_lft
;
146 __s32 regen_max_retry
;
147 __s32 max_desync_factor
;
150 __s32 accept_ra_defrtr
;
151 __s32 accept_ra_pinfo
;
152 #ifdef CONFIG_IPV6_ROUTER_PREF
153 __s32 accept_ra_rtr_pref
;
154 __s32 rtr_probe_interval
;
155 #ifdef CONFIG_IPV6_ROUTE_INFO
156 __s32 accept_ra_rt_info_max_plen
;
160 __s32 accept_source_route
;
161 #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
162 __s32 optimistic_dad
;
168 /* index values for the variables in ipv6_devconf */
170 DEVCONF_FORWARDING
= 0,
174 DEVCONF_ACCEPT_REDIRECTS
,
176 DEVCONF_DAD_TRANSMITS
,
177 DEVCONF_RTR_SOLICITS
,
178 DEVCONF_RTR_SOLICIT_INTERVAL
,
179 DEVCONF_RTR_SOLICIT_DELAY
,
180 DEVCONF_USE_TEMPADDR
,
181 DEVCONF_TEMP_VALID_LFT
,
182 DEVCONF_TEMP_PREFERED_LFT
,
183 DEVCONF_REGEN_MAX_RETRY
,
184 DEVCONF_MAX_DESYNC_FACTOR
,
185 DEVCONF_MAX_ADDRESSES
,
186 DEVCONF_FORCE_MLD_VERSION
,
187 DEVCONF_ACCEPT_RA_DEFRTR
,
188 DEVCONF_ACCEPT_RA_PINFO
,
189 DEVCONF_ACCEPT_RA_RTR_PREF
,
190 DEVCONF_RTR_PROBE_INTERVAL
,
191 DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN
,
193 DEVCONF_OPTIMISTIC_DAD
,
194 DEVCONF_ACCEPT_SOURCE_ROUTE
,
199 #include <linux/icmpv6.h>
200 #include <linux/tcp.h>
201 #include <linux/udp.h>
203 #include <net/inet_sock.h>
205 static inline struct ipv6hdr
*ipv6_hdr(const struct sk_buff
*skb
)
207 return (struct ipv6hdr
*)skb_network_header(skb
);
210 static inline struct ipv6hdr
*ipipv6_hdr(const struct sk_buff
*skb
)
212 return (struct ipv6hdr
*)skb_transport_header(skb
);
216 This structure contains results of exthdrs parsing
217 as offsets from skb->nh.
220 struct inet6_skb_parm
{
230 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
234 #define IP6SKB_XFRM_TRANSFORMED 1
237 #define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb))
239 static inline int inet6_iif(const struct sk_buff
*skb
)
241 return IP6CB(skb
)->iif
;
244 struct inet6_request_sock
{
245 struct in6_addr loc_addr
;
246 struct in6_addr rmt_addr
;
247 struct sk_buff
*pktopts
;
251 struct tcp6_request_sock
{
252 struct tcp_request_sock tcp6rsk_tcp
;
253 struct inet6_request_sock tcp6rsk_inet6
;
256 struct ipv6_mc_socklist
;
257 struct ipv6_ac_socklist
;
258 struct ipv6_fl_socklist
;
261 * struct ipv6_pinfo - ipv6 private area
263 * In the struct sock hierarchy (tcp6_sock, upd6_sock, etc)
264 * this _must_ be the last member, so that inet6_sk_generic
265 * is able to calculate its offset from the base struct sock
266 * by using the struct proto->slab_obj_size member. -acme
269 struct in6_addr saddr
;
270 struct in6_addr rcv_saddr
;
271 struct in6_addr daddr
;
272 struct in6_addr
*daddr_cache
;
273 #ifdef CONFIG_IPV6_SUBTREES
274 struct in6_addr
*saddr_cache
;
283 /* pktoption flags */
312 struct ipv6_mc_socklist
*ipv6_mc_list
;
313 struct ipv6_ac_socklist
*ipv6_ac_list
;
314 struct ipv6_fl_socklist
*ipv6_fl_list
;
316 struct ipv6_txoptions
*opt
;
317 struct sk_buff
*pktoptions
;
319 struct ipv6_txoptions
*opt
;
326 /* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */
328 /* inet_sock has to be the first member of raw6_sock */
329 struct inet_sock inet
;
330 __u32 checksum
; /* perform checksum */
331 __u32 offset
; /* checksum offset */
332 struct icmp6_filter filter
;
333 /* ipv6_pinfo has to be the last member of raw6_sock, see inet6_sk_generic */
334 struct ipv6_pinfo inet6
;
339 /* ipv6_pinfo has to be the last member of udp6_sock, see inet6_sk_generic */
340 struct ipv6_pinfo inet6
;
345 /* ipv6_pinfo has to be the last member of tcp6_sock, see inet6_sk_generic */
346 struct ipv6_pinfo inet6
;
349 extern int inet6_sk_rebuild_header(struct sock
*sk
);
351 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
352 static inline struct ipv6_pinfo
* inet6_sk(const struct sock
*__sk
)
354 return inet_sk(__sk
)->pinet6
;
357 static inline struct inet6_request_sock
*
358 inet6_rsk(const struct request_sock
*rsk
)
360 return (struct inet6_request_sock
*)(((u8
*)rsk
) +
361 inet_rsk(rsk
)->inet6_rsk_offset
);
364 static inline u32
inet6_rsk_offset(struct request_sock
*rsk
)
366 return rsk
->rsk_ops
->obj_size
- sizeof(struct inet6_request_sock
);
369 static inline struct request_sock
*inet6_reqsk_alloc(struct request_sock_ops
*ops
)
371 struct request_sock
*req
= reqsk_alloc(ops
);
374 inet_rsk(req
)->inet6_rsk_offset
= inet6_rsk_offset(req
);
379 static inline struct raw6_sock
*raw6_sk(const struct sock
*sk
)
381 return (struct raw6_sock
*)sk
;
384 static inline void inet_sk_copy_descendant(struct sock
*sk_to
,
385 const struct sock
*sk_from
)
387 int ancestor_size
= sizeof(struct inet_sock
);
389 if (sk_from
->sk_family
== PF_INET6
)
390 ancestor_size
+= sizeof(struct ipv6_pinfo
);
392 __inet_sk_copy_descendant(sk_to
, sk_from
, ancestor_size
);
395 #define __ipv6_only_sock(sk) (inet6_sk(sk)->ipv6only)
396 #define ipv6_only_sock(sk) ((sk)->sk_family == PF_INET6 && __ipv6_only_sock(sk))
398 struct inet6_timewait_sock
{
399 struct in6_addr tw_v6_daddr
;
400 struct in6_addr tw_v6_rcv_saddr
;
403 struct tcp6_timewait_sock
{
404 struct tcp_timewait_sock tcp6tw_tcp
;
405 struct inet6_timewait_sock tcp6tw_inet6
;
408 static inline u16
inet6_tw_offset(const struct proto
*prot
)
410 return prot
->twsk_prot
->twsk_obj_size
-
411 sizeof(struct inet6_timewait_sock
);
414 static inline struct inet6_timewait_sock
*inet6_twsk(const struct sock
*sk
)
416 return (struct inet6_timewait_sock
*)(((u8
*)sk
) +
417 inet_twsk(sk
)->tw_ipv6_offset
);
420 static inline struct in6_addr
*__inet6_rcv_saddr(const struct sock
*sk
)
422 return likely(sk
->sk_state
!= TCP_TIME_WAIT
) ?
423 &inet6_sk(sk
)->rcv_saddr
: &inet6_twsk(sk
)->tw_v6_rcv_saddr
;
426 static inline struct in6_addr
*inet6_rcv_saddr(const struct sock
*sk
)
428 return sk
->sk_family
== AF_INET6
? __inet6_rcv_saddr(sk
) : NULL
;
431 static inline int inet_v6_ipv6only(const struct sock
*sk
)
433 return likely(sk
->sk_state
!= TCP_TIME_WAIT
) ?
434 ipv6_only_sock(sk
) : inet_twsk(sk
)->tw_ipv6only
;
437 #define __ipv6_only_sock(sk) 0
438 #define ipv6_only_sock(sk) 0
440 static inline struct ipv6_pinfo
* inet6_sk(const struct sock
*__sk
)
445 static inline struct inet6_request_sock
*
446 inet6_rsk(const struct request_sock
*rsk
)
451 static inline struct raw6_sock
*raw6_sk(const struct sock
*sk
)
456 #define __inet6_rcv_saddr(__sk) NULL
457 #define inet6_rcv_saddr(__sk) NULL
458 #define tcp_twsk_ipv6only(__sk) 0
459 #define inet_v6_ipv6only(__sk) 0
460 #endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
462 #define INET6_MATCH(__sk, __net, __hash, __saddr, __daddr, __ports, __dif)\
463 (((__sk)->sk_hash == (__hash)) && ((__sk)->sk_net == (__net)) && \
464 ((*((__portpair *)&(inet_sk(__sk)->dport))) == (__ports)) && \
465 ((__sk)->sk_family == AF_INET6) && \
466 ipv6_addr_equal(&inet6_sk(__sk)->daddr, (__saddr)) && \
467 ipv6_addr_equal(&inet6_sk(__sk)->rcv_saddr, (__daddr)) && \
468 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
470 #define INET6_TW_MATCH(__sk, __net, __hash, __saddr, __daddr, __ports, __dif) \
471 (((__sk)->sk_hash == (__hash)) && ((__sk)->sk_net == (__net)) && \
472 (*((__portpair *)&(inet_twsk(__sk)->tw_dport)) == (__ports)) && \
473 ((__sk)->sk_family == PF_INET6) && \
474 (ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_daddr, (__saddr))) && \
475 (ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_rcv_saddr, (__daddr))) && \
476 (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif))))
478 #endif /* __KERNEL__ */