4 #include <uapi/linux/ipv6.h>
6 #define ipv6_optlen(p) (((p)->hdrlen+1) << 3)
7 #define ipv6_authlen(p) (((p)->hdrlen+2) << 2)
9 * This structure contains configuration options per IPv6 link.
16 __s32 accept_redirects
;
20 __s32 rtr_solicit_interval
;
21 __s32 rtr_solicit_delay
;
22 __s32 force_mld_version
;
23 __s32 mldv1_unsolicited_report_interval
;
24 __s32 mldv2_unsolicited_report_interval
;
27 __s32 temp_prefered_lft
;
28 __s32 regen_max_retry
;
29 __s32 max_desync_factor
;
31 __s32 accept_ra_defrtr
;
32 __s32 accept_ra_pinfo
;
33 #ifdef CONFIG_IPV6_ROUTER_PREF
34 __s32 accept_ra_rtr_pref
;
35 __s32 rtr_probe_interval
;
36 #ifdef CONFIG_IPV6_ROUTE_INFO
37 __s32 accept_ra_rt_info_max_plen
;
41 __s32 accept_source_route
;
42 __s32 accept_ra_from_local
;
43 #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
47 #ifdef CONFIG_IPV6_MROUTE
54 __s32 suppress_frag_ndisc
;
63 extern struct ipv6_params ipv6_defaults
;
64 #include <linux/icmpv6.h>
65 #include <linux/tcp.h>
66 #include <linux/udp.h>
68 #include <net/inet_sock.h>
70 static inline struct ipv6hdr
*ipv6_hdr(const struct sk_buff
*skb
)
72 return (struct ipv6hdr
*)skb_network_header(skb
);
75 static inline struct ipv6hdr
*inner_ipv6_hdr(const struct sk_buff
*skb
)
77 return (struct ipv6hdr
*)skb_inner_network_header(skb
);
80 static inline struct ipv6hdr
*ipipv6_hdr(const struct sk_buff
*skb
)
82 return (struct ipv6hdr
*)skb_transport_header(skb
);
86 This structure contains results of exthdrs parsing
87 as offsets from skb->nh.
90 struct inet6_skb_parm
{
100 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
105 #define IP6SKB_XFRM_TRANSFORMED 1
106 #define IP6SKB_FORWARDED 2
107 #define IP6SKB_REROUTED 4
108 #define IP6SKB_ROUTERALERT 8
109 #define IP6SKB_FRAGMENTED 16
112 #define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb))
113 #define IP6CBMTU(skb) ((struct ip6_mtuinfo *)((skb)->cb))
115 static inline int inet6_iif(const struct sk_buff
*skb
)
117 return IP6CB(skb
)->iif
;
120 struct tcp6_request_sock
{
121 struct tcp_request_sock tcp6rsk_tcp
;
124 struct ipv6_mc_socklist
;
125 struct ipv6_ac_socklist
;
126 struct ipv6_fl_socklist
;
129 struct ipv6_txoptions
*opt
;
135 * struct ipv6_pinfo - ipv6 private area
137 * In the struct sock hierarchy (tcp6_sock, upd6_sock, etc)
138 * this _must_ be the last member, so that inet6_sk_generic
139 * is able to calculate its offset from the base struct sock
140 * by using the struct proto->slab_obj_size member. -acme
143 struct in6_addr saddr
;
144 struct in6_pktinfo sticky_pktinfo
;
145 const struct in6_addr
*daddr_cache
;
146 #ifdef CONFIG_IPV6_SUBTREES
147 const struct in6_addr
*saddr_cache
;
155 * Omit one shift by by putting the signed field at MSB.
157 #if defined(__BIG_ENDIAN_BITFIELD)
165 #if defined(__BIG_ENDIAN_BITFIELD)
166 /* Packed in 16bits. */
178 /* pktoption flags */
205 padding
:1, /* 1 bit hole */
206 srcprefs
:3, /* 001: prefer temporary address
207 * 010: prefer public address
208 * 100: prefer care-of address
219 struct ipv6_mc_socklist __rcu
*ipv6_mc_list
;
220 struct ipv6_ac_socklist
*ipv6_ac_list
;
221 struct ipv6_fl_socklist __rcu
*ipv6_fl_list
;
223 struct ipv6_txoptions
*opt
;
224 struct sk_buff
*pktoptions
;
225 struct sk_buff
*rxpmtu
;
226 struct inet6_cork cork
;
229 /* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */
231 /* inet_sock has to be the first member of raw6_sock */
232 struct inet_sock inet
;
233 __u32 checksum
; /* perform checksum */
234 __u32 offset
; /* checksum offset */
235 struct icmp6_filter filter
;
237 /* ipv6_pinfo has to be the last member of raw6_sock, see inet6_sk_generic */
238 struct ipv6_pinfo inet6
;
243 /* ipv6_pinfo has to be the last member of udp6_sock, see inet6_sk_generic */
244 struct ipv6_pinfo inet6
;
249 /* ipv6_pinfo has to be the last member of tcp6_sock, see inet6_sk_generic */
250 struct ipv6_pinfo inet6
;
253 extern int inet6_sk_rebuild_header(struct sock
*sk
);
255 struct tcp6_timewait_sock
{
256 struct tcp_timewait_sock tcp6tw_tcp
;
259 #if IS_ENABLED(CONFIG_IPV6)
260 static inline struct ipv6_pinfo
* inet6_sk(const struct sock
*__sk
)
262 return inet_sk(__sk
)->pinet6
;
265 static inline struct raw6_sock
*raw6_sk(const struct sock
*sk
)
267 return (struct raw6_sock
*)sk
;
270 static inline void inet_sk_copy_descendant(struct sock
*sk_to
,
271 const struct sock
*sk_from
)
273 int ancestor_size
= sizeof(struct inet_sock
);
275 if (sk_from
->sk_family
== PF_INET6
)
276 ancestor_size
+= sizeof(struct ipv6_pinfo
);
278 __inet_sk_copy_descendant(sk_to
, sk_from
, ancestor_size
);
281 #define __ipv6_only_sock(sk) (sk->sk_ipv6only)
282 #define ipv6_only_sock(sk) (__ipv6_only_sock(sk))
283 #define ipv6_sk_rxinfo(sk) ((sk)->sk_family == PF_INET6 && \
284 inet6_sk(sk)->rxopt.bits.rxinfo)
286 static inline const struct in6_addr
*inet6_rcv_saddr(const struct sock
*sk
)
288 if (sk
->sk_family
== AF_INET6
)
289 return &sk
->sk_v6_rcv_saddr
;
293 static inline int inet_v6_ipv6only(const struct sock
*sk
)
295 /* ipv6only field is at same position for timewait and other sockets */
296 return ipv6_only_sock(sk
);
299 #define __ipv6_only_sock(sk) 0
300 #define ipv6_only_sock(sk) 0
301 #define ipv6_sk_rxinfo(sk) 0
303 static inline struct ipv6_pinfo
* inet6_sk(const struct sock
*__sk
)
308 static inline struct inet6_request_sock
*
309 inet6_rsk(const struct request_sock
*rsk
)
314 static inline struct raw6_sock
*raw6_sk(const struct sock
*sk
)
319 #define inet6_rcv_saddr(__sk) NULL
320 #define tcp_twsk_ipv6only(__sk) 0
321 #define inet_v6_ipv6only(__sk) 0
322 #endif /* IS_ENABLED(CONFIG_IPV6) */