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;
62 extern struct ipv6_params ipv6_defaults;
63 #include <linux/icmpv6.h>
64 #include <linux/tcp.h>
65 #include <linux/udp.h>
67 #include <net/inet_sock.h>
69 static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb)
71 return (struct ipv6hdr *)skb_network_header(skb);
74 static inline struct ipv6hdr *inner_ipv6_hdr(const struct sk_buff *skb)
76 return (struct ipv6hdr *)skb_inner_network_header(skb);
79 static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb)
81 return (struct ipv6hdr *)skb_transport_header(skb);
85 This structure contains results of exthdrs parsing
86 as offsets from skb->nh.
89 struct inet6_skb_parm {
99 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
104 #define IP6SKB_XFRM_TRANSFORMED 1
105 #define IP6SKB_FORWARDED 2
106 #define IP6SKB_REROUTED 4
107 #define IP6SKB_ROUTERALERT 8
108 #define IP6SKB_FRAGMENTED 16
111 #define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb))
112 #define IP6CBMTU(skb) ((struct ip6_mtuinfo *)((skb)->cb))
114 static inline int inet6_iif(const struct sk_buff *skb)
116 return IP6CB(skb)->iif;
119 struct tcp6_request_sock {
120 struct tcp_request_sock tcp6rsk_tcp;
123 struct ipv6_mc_socklist;
124 struct ipv6_ac_socklist;
125 struct ipv6_fl_socklist;
128 * struct ipv6_pinfo - ipv6 private area
130 * In the struct sock hierarchy (tcp6_sock, upd6_sock, etc)
131 * this _must_ be the last member, so that inet6_sk_generic
132 * is able to calculate its offset from the base struct sock
133 * by using the struct proto->slab_obj_size member. -acme
136 struct in6_addr saddr;
137 struct in6_pktinfo sticky_pktinfo;
138 const struct in6_addr *daddr_cache;
139 #ifdef CONFIG_IPV6_SUBTREES
140 const struct in6_addr *saddr_cache;
148 * Omit one shift by by putting the signed field at MSB.
150 #if defined(__BIG_ENDIAN_BITFIELD)
158 #if defined(__BIG_ENDIAN_BITFIELD)
159 /* Packed in 16bits. */
171 /* pktoption flags */
198 padding:1, /* 1 bit hole */
199 srcprefs:3, /* 001: prefer temporary address
200 * 010: prefer public address
201 * 100: prefer care-of address
212 struct ipv6_mc_socklist __rcu *ipv6_mc_list;
213 struct ipv6_ac_socklist *ipv6_ac_list;
214 struct ipv6_fl_socklist __rcu *ipv6_fl_list;
216 struct ipv6_txoptions *opt;
217 struct sk_buff *pktoptions;
218 struct sk_buff *rxpmtu;
220 struct ipv6_txoptions *opt;
226 /* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */
228 /* inet_sock has to be the first member of raw6_sock */
229 struct inet_sock inet;
230 __u32 checksum; /* perform checksum */
231 __u32 offset; /* checksum offset */
232 struct icmp6_filter filter;
234 /* ipv6_pinfo has to be the last member of raw6_sock, see inet6_sk_generic */
235 struct ipv6_pinfo inet6;
240 /* ipv6_pinfo has to be the last member of udp6_sock, see inet6_sk_generic */
241 struct ipv6_pinfo inet6;
246 /* ipv6_pinfo has to be the last member of tcp6_sock, see inet6_sk_generic */
247 struct ipv6_pinfo inet6;
250 extern int inet6_sk_rebuild_header(struct sock *sk);
252 struct tcp6_timewait_sock {
253 struct tcp_timewait_sock tcp6tw_tcp;
256 #if IS_ENABLED(CONFIG_IPV6)
257 static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
259 return inet_sk(__sk)->pinet6;
262 static inline struct raw6_sock *raw6_sk(const struct sock *sk)
264 return (struct raw6_sock *)sk;
267 static inline void inet_sk_copy_descendant(struct sock *sk_to,
268 const struct sock *sk_from)
270 int ancestor_size = sizeof(struct inet_sock);
272 if (sk_from->sk_family == PF_INET6)
273 ancestor_size += sizeof(struct ipv6_pinfo);
275 __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size);
278 #define __ipv6_only_sock(sk) (sk->sk_ipv6only)
279 #define ipv6_only_sock(sk) (__ipv6_only_sock(sk))
280 #define ipv6_sk_rxinfo(sk) ((sk)->sk_family == PF_INET6 && \
281 inet6_sk(sk)->rxopt.bits.rxinfo)
283 static inline const struct in6_addr *inet6_rcv_saddr(const struct sock *sk)
285 if (sk->sk_family == AF_INET6)
286 return &sk->sk_v6_rcv_saddr;
290 static inline int inet_v6_ipv6only(const struct sock *sk)
292 /* ipv6only field is at same position for timewait and other sockets */
293 return ipv6_only_sock(sk);
296 #define __ipv6_only_sock(sk) 0
297 #define ipv6_only_sock(sk) 0
298 #define ipv6_sk_rxinfo(sk) 0
300 static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
305 static inline struct inet6_request_sock *
306 inet6_rsk(const struct request_sock *rsk)
311 static inline struct raw6_sock *raw6_sk(const struct sock *sk)
316 #define inet6_rcv_saddr(__sk) NULL
317 #define tcp_twsk_ipv6only(__sk) 0
318 #define inet_v6_ipv6only(__sk) 0
319 #endif /* IS_ENABLED(CONFIG_IPV6) */