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_max_interval;
22 __s32 rtr_solicit_delay;
23 __s32 force_mld_version;
24 __s32 mldv1_unsolicited_report_interval;
25 __s32 mldv2_unsolicited_report_interval;
28 __s32 temp_prefered_lft;
29 __s32 regen_max_retry;
30 __s32 max_desync_factor;
32 __s32 accept_ra_defrtr;
33 __s32 accept_ra_min_hop_limit;
34 __s32 accept_ra_pinfo;
35 __s32 ignore_routes_with_linkdown;
36 #ifdef CONFIG_IPV6_ROUTER_PREF
37 __s32 accept_ra_rtr_pref;
38 __s32 rtr_probe_interval;
39 #ifdef CONFIG_IPV6_ROUTE_INFO
40 __s32 accept_ra_rt_info_min_plen;
41 __s32 accept_ra_rt_info_max_plen;
44 __s32 accept_ra_rt_table;
46 __s32 accept_source_route;
47 __s32 accept_ra_from_local;
48 #ifdef CONFIG_IPV6_OPTIMISTIC_DAD
52 #ifdef CONFIG_IPV6_MROUTE
59 __s32 suppress_frag_ndisc;
61 struct ipv6_stable_secret {
63 struct in6_addr secret;
65 __s32 use_oif_addrs_only;
66 __s32 accept_ra_prefix_route;
74 extern struct ipv6_params ipv6_defaults;
75 #include <linux/icmpv6.h>
76 #include <linux/tcp.h>
77 #include <linux/udp.h>
79 #include <net/inet_sock.h>
81 static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb)
83 return (struct ipv6hdr *)skb_network_header(skb);
86 static inline struct ipv6hdr *inner_ipv6_hdr(const struct sk_buff *skb)
88 return (struct ipv6hdr *)skb_inner_network_header(skb);
91 static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb)
93 return (struct ipv6hdr *)skb_transport_header(skb);
97 This structure contains results of exthdrs parsing
98 as offsets from skb->nh.
101 struct inet6_skb_parm {
110 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
115 #define IP6SKB_XFRM_TRANSFORMED 1
116 #define IP6SKB_FORWARDED 2
117 #define IP6SKB_REROUTED 4
118 #define IP6SKB_ROUTERALERT 8
119 #define IP6SKB_FRAGMENTED 16
120 #define IP6SKB_HOPBYHOP 32
123 #define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb))
124 #define IP6CBMTU(skb) ((struct ip6_mtuinfo *)((skb)->cb))
126 static inline int inet6_iif(const struct sk_buff *skb)
128 return IP6CB(skb)->iif;
131 struct tcp6_request_sock {
132 struct tcp_request_sock tcp6rsk_tcp;
135 struct ipv6_mc_socklist;
136 struct ipv6_ac_socklist;
137 struct ipv6_fl_socklist;
140 struct ipv6_txoptions *opt;
146 * struct ipv6_pinfo - ipv6 private area
148 * In the struct sock hierarchy (tcp6_sock, upd6_sock, etc)
149 * this _must_ be the last member, so that inet6_sk_generic
150 * is able to calculate its offset from the base struct sock
151 * by using the struct proto->slab_obj_size member. -acme
154 struct in6_addr saddr;
155 struct in6_pktinfo sticky_pktinfo;
156 const struct in6_addr *daddr_cache;
157 #ifdef CONFIG_IPV6_SUBTREES
158 const struct in6_addr *saddr_cache;
166 * Omit one shift by by putting the signed field at MSB.
168 #if defined(__BIG_ENDIAN_BITFIELD)
176 #if defined(__BIG_ENDIAN_BITFIELD)
177 /* Packed in 16bits. */
189 /* pktoption flags */
216 padding:1, /* 1 bit hole */
217 srcprefs:3, /* 001: prefer temporary address
218 * 010: prefer public address
219 * 100: prefer care-of address
231 struct ipv6_mc_socklist __rcu *ipv6_mc_list;
232 struct ipv6_ac_socklist *ipv6_ac_list;
233 struct ipv6_fl_socklist __rcu *ipv6_fl_list;
235 struct ipv6_txoptions __rcu *opt;
236 struct sk_buff *pktoptions;
237 struct sk_buff *rxpmtu;
238 struct inet6_cork cork;
241 /* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */
243 /* inet_sock has to be the first member of raw6_sock */
244 struct inet_sock inet;
245 __u32 checksum; /* perform checksum */
246 __u32 offset; /* checksum offset */
247 struct icmp6_filter filter;
249 /* ipv6_pinfo has to be the last member of raw6_sock, see inet6_sk_generic */
250 struct ipv6_pinfo inet6;
255 /* ipv6_pinfo has to be the last member of udp6_sock, see inet6_sk_generic */
256 struct ipv6_pinfo inet6;
261 /* ipv6_pinfo has to be the last member of tcp6_sock, see inet6_sk_generic */
262 struct ipv6_pinfo inet6;
265 extern int inet6_sk_rebuild_header(struct sock *sk);
267 struct tcp6_timewait_sock {
268 struct tcp_timewait_sock tcp6tw_tcp;
271 #if IS_ENABLED(CONFIG_IPV6)
272 static inline struct ipv6_pinfo *inet6_sk(const struct sock *__sk)
274 return sk_fullsock(__sk) ? inet_sk(__sk)->pinet6 : NULL;
277 static inline struct raw6_sock *raw6_sk(const struct sock *sk)
279 return (struct raw6_sock *)sk;
282 static inline void inet_sk_copy_descendant(struct sock *sk_to,
283 const struct sock *sk_from)
285 int ancestor_size = sizeof(struct inet_sock);
287 if (sk_from->sk_family == PF_INET6)
288 ancestor_size += sizeof(struct ipv6_pinfo);
290 __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size);
293 #define __ipv6_only_sock(sk) (sk->sk_ipv6only)
294 #define ipv6_only_sock(sk) (__ipv6_only_sock(sk))
295 #define ipv6_sk_rxinfo(sk) ((sk)->sk_family == PF_INET6 && \
296 inet6_sk(sk)->rxopt.bits.rxinfo)
298 static inline const struct in6_addr *inet6_rcv_saddr(const struct sock *sk)
300 if (sk->sk_family == AF_INET6)
301 return &sk->sk_v6_rcv_saddr;
305 static inline int inet_v6_ipv6only(const struct sock *sk)
307 /* ipv6only field is at same position for timewait and other sockets */
308 return ipv6_only_sock(sk);
311 #define __ipv6_only_sock(sk) 0
312 #define ipv6_only_sock(sk) 0
313 #define ipv6_sk_rxinfo(sk) 0
315 static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
320 static inline struct inet6_request_sock *
321 inet6_rsk(const struct request_sock *rsk)
326 static inline struct raw6_sock *raw6_sk(const struct sock *sk)
331 #define inet6_rcv_saddr(__sk) NULL
332 #define tcp_twsk_ipv6only(__sk) 0
333 #define inet_v6_ipv6only(__sk) 0
334 #endif /* IS_ENABLED(CONFIG_IPV6) */