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;
43 __s32 accept_source_route;
44 __s32 accept_ra_from_local;
45 #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
49 #ifdef CONFIG_IPV6_MROUTE
56 __s32 suppress_frag_ndisc;
58 struct ipv6_stable_secret {
60 struct in6_addr secret;
62 __s32 use_oif_addrs_only;
70 extern struct ipv6_params ipv6_defaults;
71 #include <linux/icmpv6.h>
72 #include <linux/tcp.h>
73 #include <linux/udp.h>
75 #include <net/inet_sock.h>
77 static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb)
79 return (struct ipv6hdr *)skb_network_header(skb);
82 static inline struct ipv6hdr *inner_ipv6_hdr(const struct sk_buff *skb)
84 return (struct ipv6hdr *)skb_inner_network_header(skb);
87 static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb)
89 return (struct ipv6hdr *)skb_transport_header(skb);
93 This structure contains results of exthdrs parsing
94 as offsets from skb->nh.
97 struct inet6_skb_parm {
106 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
111 #define IP6SKB_XFRM_TRANSFORMED 1
112 #define IP6SKB_FORWARDED 2
113 #define IP6SKB_REROUTED 4
114 #define IP6SKB_ROUTERALERT 8
115 #define IP6SKB_FRAGMENTED 16
116 #define IP6SKB_HOPBYHOP 32
119 #define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb))
120 #define IP6CBMTU(skb) ((struct ip6_mtuinfo *)((skb)->cb))
122 static inline int inet6_iif(const struct sk_buff *skb)
124 return IP6CB(skb)->iif;
127 struct tcp6_request_sock {
128 struct tcp_request_sock tcp6rsk_tcp;
131 struct ipv6_mc_socklist;
132 struct ipv6_ac_socklist;
133 struct ipv6_fl_socklist;
136 struct ipv6_txoptions *opt;
142 * struct ipv6_pinfo - ipv6 private area
144 * In the struct sock hierarchy (tcp6_sock, upd6_sock, etc)
145 * this _must_ be the last member, so that inet6_sk_generic
146 * is able to calculate its offset from the base struct sock
147 * by using the struct proto->slab_obj_size member. -acme
150 struct in6_addr saddr;
151 struct in6_pktinfo sticky_pktinfo;
152 const struct in6_addr *daddr_cache;
153 #ifdef CONFIG_IPV6_SUBTREES
154 const struct in6_addr *saddr_cache;
162 * Omit one shift by by putting the signed field at MSB.
164 #if defined(__BIG_ENDIAN_BITFIELD)
172 #if defined(__BIG_ENDIAN_BITFIELD)
173 /* Packed in 16bits. */
185 /* pktoption flags */
212 padding:1, /* 1 bit hole */
213 srcprefs:3, /* 001: prefer temporary address
214 * 010: prefer public address
215 * 100: prefer care-of address
226 struct ipv6_mc_socklist __rcu *ipv6_mc_list;
227 struct ipv6_ac_socklist *ipv6_ac_list;
228 struct ipv6_fl_socklist __rcu *ipv6_fl_list;
230 struct ipv6_txoptions __rcu *opt;
231 struct sk_buff *pktoptions;
232 struct sk_buff *rxpmtu;
233 struct inet6_cork cork;
236 /* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */
238 /* inet_sock has to be the first member of raw6_sock */
239 struct inet_sock inet;
240 __u32 checksum; /* perform checksum */
241 __u32 offset; /* checksum offset */
242 struct icmp6_filter filter;
244 /* ipv6_pinfo has to be the last member of raw6_sock, see inet6_sk_generic */
245 struct ipv6_pinfo inet6;
250 /* ipv6_pinfo has to be the last member of udp6_sock, see inet6_sk_generic */
251 struct ipv6_pinfo inet6;
256 /* ipv6_pinfo has to be the last member of tcp6_sock, see inet6_sk_generic */
257 struct ipv6_pinfo inet6;
260 extern int inet6_sk_rebuild_header(struct sock *sk);
262 struct tcp6_timewait_sock {
263 struct tcp_timewait_sock tcp6tw_tcp;
266 #if IS_ENABLED(CONFIG_IPV6)
267 static inline struct ipv6_pinfo *inet6_sk(const struct sock *__sk)
269 return sk_fullsock(__sk) ? inet_sk(__sk)->pinet6 : NULL;
272 static inline struct raw6_sock *raw6_sk(const struct sock *sk)
274 return (struct raw6_sock *)sk;
277 static inline void inet_sk_copy_descendant(struct sock *sk_to,
278 const struct sock *sk_from)
280 int ancestor_size = sizeof(struct inet_sock);
282 if (sk_from->sk_family == PF_INET6)
283 ancestor_size += sizeof(struct ipv6_pinfo);
285 __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size);
288 #define __ipv6_only_sock(sk) (sk->sk_ipv6only)
289 #define ipv6_only_sock(sk) (__ipv6_only_sock(sk))
290 #define ipv6_sk_rxinfo(sk) ((sk)->sk_family == PF_INET6 && \
291 inet6_sk(sk)->rxopt.bits.rxinfo)
293 static inline const struct in6_addr *inet6_rcv_saddr(const struct sock *sk)
295 if (sk->sk_family == AF_INET6)
296 return &sk->sk_v6_rcv_saddr;
300 static inline int inet_v6_ipv6only(const struct sock *sk)
302 /* ipv6only field is at same position for timewait and other sockets */
303 return ipv6_only_sock(sk);
306 #define __ipv6_only_sock(sk) 0
307 #define ipv6_only_sock(sk) 0
308 #define ipv6_sk_rxinfo(sk) 0
310 static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
315 static inline struct inet6_request_sock *
316 inet6_rsk(const struct request_sock *rsk)
321 static inline struct raw6_sock *raw6_sk(const struct sock *sk)
326 #define inet6_rcv_saddr(__sk) NULL
327 #define tcp_twsk_ipv6only(__sk) 0
328 #define inet_v6_ipv6only(__sk) 0
329 #endif /* IS_ENABLED(CONFIG_IPV6) */