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_min_hop_limit;
33 __s32 accept_ra_pinfo;
34 __s32 ignore_routes_with_linkdown;
35 #ifdef CONFIG_IPV6_ROUTER_PREF
36 __s32 accept_ra_rtr_pref;
37 __s32 rtr_probe_interval;
38 #ifdef CONFIG_IPV6_ROUTE_INFO
39 __s32 accept_ra_rt_info_max_plen;
42 __s32 accept_ra_rt_table;
44 __s32 accept_source_route;
45 __s32 accept_ra_from_local;
46 #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
50 #ifdef CONFIG_IPV6_MROUTE
57 __s32 suppress_frag_ndisc;
59 struct ipv6_stable_secret {
61 struct in6_addr secret;
63 __s32 use_oif_addrs_only;
71 extern struct ipv6_params ipv6_defaults;
72 #include <linux/icmpv6.h>
73 #include <linux/tcp.h>
74 #include <linux/udp.h>
76 #include <net/inet_sock.h>
78 static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb)
80 return (struct ipv6hdr *)skb_network_header(skb);
83 static inline struct ipv6hdr *inner_ipv6_hdr(const struct sk_buff *skb)
85 return (struct ipv6hdr *)skb_inner_network_header(skb);
88 static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb)
90 return (struct ipv6hdr *)skb_transport_header(skb);
94 This structure contains results of exthdrs parsing
95 as offsets from skb->nh.
98 struct inet6_skb_parm {
107 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
112 #define IP6SKB_XFRM_TRANSFORMED 1
113 #define IP6SKB_FORWARDED 2
114 #define IP6SKB_REROUTED 4
115 #define IP6SKB_ROUTERALERT 8
116 #define IP6SKB_FRAGMENTED 16
117 #define IP6SKB_HOPBYHOP 32
120 #define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb))
121 #define IP6CBMTU(skb) ((struct ip6_mtuinfo *)((skb)->cb))
123 static inline int inet6_iif(const struct sk_buff *skb)
125 return IP6CB(skb)->iif;
128 struct tcp6_request_sock {
129 struct tcp_request_sock tcp6rsk_tcp;
132 struct ipv6_mc_socklist;
133 struct ipv6_ac_socklist;
134 struct ipv6_fl_socklist;
137 struct ipv6_txoptions *opt;
143 * struct ipv6_pinfo - ipv6 private area
145 * In the struct sock hierarchy (tcp6_sock, upd6_sock, etc)
146 * this _must_ be the last member, so that inet6_sk_generic
147 * is able to calculate its offset from the base struct sock
148 * by using the struct proto->slab_obj_size member. -acme
151 struct in6_addr saddr;
152 struct in6_pktinfo sticky_pktinfo;
153 const struct in6_addr *daddr_cache;
154 #ifdef CONFIG_IPV6_SUBTREES
155 const struct in6_addr *saddr_cache;
163 * Omit one shift by by putting the signed field at MSB.
165 #if defined(__BIG_ENDIAN_BITFIELD)
173 #if defined(__BIG_ENDIAN_BITFIELD)
174 /* Packed in 16bits. */
186 /* pktoption flags */
213 padding:1, /* 1 bit hole */
214 srcprefs:3, /* 001: prefer temporary address
215 * 010: prefer public address
216 * 100: prefer care-of address
227 struct ipv6_mc_socklist __rcu *ipv6_mc_list;
228 struct ipv6_ac_socklist *ipv6_ac_list;
229 struct ipv6_fl_socklist __rcu *ipv6_fl_list;
231 struct ipv6_txoptions __rcu *opt;
232 struct sk_buff *pktoptions;
233 struct sk_buff *rxpmtu;
234 struct inet6_cork cork;
237 /* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */
239 /* inet_sock has to be the first member of raw6_sock */
240 struct inet_sock inet;
241 __u32 checksum; /* perform checksum */
242 __u32 offset; /* checksum offset */
243 struct icmp6_filter filter;
245 /* ipv6_pinfo has to be the last member of raw6_sock, see inet6_sk_generic */
246 struct ipv6_pinfo inet6;
251 /* ipv6_pinfo has to be the last member of udp6_sock, see inet6_sk_generic */
252 struct ipv6_pinfo inet6;
257 /* ipv6_pinfo has to be the last member of tcp6_sock, see inet6_sk_generic */
258 struct ipv6_pinfo inet6;
261 extern int inet6_sk_rebuild_header(struct sock *sk);
263 struct tcp6_timewait_sock {
264 struct tcp_timewait_sock tcp6tw_tcp;
267 #if IS_ENABLED(CONFIG_IPV6)
268 static inline struct ipv6_pinfo *inet6_sk(const struct sock *__sk)
270 return sk_fullsock(__sk) ? inet_sk(__sk)->pinet6 : NULL;
273 static inline struct raw6_sock *raw6_sk(const struct sock *sk)
275 return (struct raw6_sock *)sk;
278 static inline void inet_sk_copy_descendant(struct sock *sk_to,
279 const struct sock *sk_from)
281 int ancestor_size = sizeof(struct inet_sock);
283 if (sk_from->sk_family == PF_INET6)
284 ancestor_size += sizeof(struct ipv6_pinfo);
286 __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size);
289 #define __ipv6_only_sock(sk) (sk->sk_ipv6only)
290 #define ipv6_only_sock(sk) (__ipv6_only_sock(sk))
291 #define ipv6_sk_rxinfo(sk) ((sk)->sk_family == PF_INET6 && \
292 inet6_sk(sk)->rxopt.bits.rxinfo)
294 static inline const struct in6_addr *inet6_rcv_saddr(const struct sock *sk)
296 if (sk->sk_family == AF_INET6)
297 return &sk->sk_v6_rcv_saddr;
301 static inline int inet_v6_ipv6only(const struct sock *sk)
303 /* ipv6only field is at same position for timewait and other sockets */
304 return ipv6_only_sock(sk);
307 #define __ipv6_only_sock(sk) 0
308 #define ipv6_only_sock(sk) 0
309 #define ipv6_sk_rxinfo(sk) 0
311 static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
316 static inline struct inet6_request_sock *
317 inet6_rsk(const struct request_sock *rsk)
322 static inline struct raw6_sock *raw6_sk(const struct sock *sk)
327 #define inet6_rcv_saddr(__sk) NULL
328 #define tcp_twsk_ipv6only(__sk) 0
329 #define inet_v6_ipv6only(__sk) 0
330 #endif /* IS_ENABLED(CONFIG_IPV6) */