Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef _IPV6_H |
2 | #define _IPV6_H | |
3 | ||
607ca46e | 4 | #include <uapi/linux/ipv6.h> |
1da177e4 | 5 | |
1da177e4 | 6 | #define ipv6_optlen(p) (((p)->hdrlen+1) << 3) |
1431fb31 | 7 | #define ipv6_authlen(p) (((p)->hdrlen+2) << 2) |
1da177e4 LT |
8 | /* |
9 | * This structure contains configuration options per IPv6 link. | |
10 | */ | |
11 | struct ipv6_devconf { | |
12 | __s32 forwarding; | |
13 | __s32 hop_limit; | |
14 | __s32 mtu6; | |
15 | __s32 accept_ra; | |
16 | __s32 accept_redirects; | |
17 | __s32 autoconf; | |
18 | __s32 dad_transmits; | |
19 | __s32 rtr_solicits; | |
20 | __s32 rtr_solicit_interval; | |
21 | __s32 rtr_solicit_delay; | |
22 | __s32 force_mld_version; | |
fc4eba58 HFS |
23 | __s32 mldv1_unsolicited_report_interval; |
24 | __s32 mldv2_unsolicited_report_interval; | |
1da177e4 LT |
25 | __s32 use_tempaddr; |
26 | __s32 temp_valid_lft; | |
27 | __s32 temp_prefered_lft; | |
28 | __s32 regen_max_retry; | |
29 | __s32 max_desync_factor; | |
1da177e4 | 30 | __s32 max_addresses; |
65f5c7c1 | 31 | __s32 accept_ra_defrtr; |
c4fd30eb | 32 | __s32 accept_ra_pinfo; |
930d6ff2 YH |
33 | #ifdef CONFIG_IPV6_ROUTER_PREF |
34 | __s32 accept_ra_rtr_pref; | |
52e16356 | 35 | __s32 rtr_probe_interval; |
09c884d4 YH |
36 | #ifdef CONFIG_IPV6_ROUTE_INFO |
37 | __s32 accept_ra_rt_info_max_plen; | |
38 | #endif | |
930d6ff2 | 39 | #endif |
fbea49e1 | 40 | __s32 proxy_ndp; |
0bcbc926 | 41 | __s32 accept_source_route; |
d9333196 | 42 | __s32 accept_ra_from_local; |
95c385b4 NH |
43 | #ifdef CONFIG_IPV6_OPTIMISTIC_DAD |
44 | __s32 optimistic_dad; | |
7fd2561e | 45 | __s32 use_optimistic; |
7bc570c8 YH |
46 | #endif |
47 | #ifdef CONFIG_IPV6_MROUTE | |
48 | __s32 mc_forwarding; | |
95c385b4 | 49 | #endif |
778d80be | 50 | __s32 disable_ipv6; |
1b34be74 | 51 | __s32 accept_dad; |
f7734fdf | 52 | __s32 force_tllao; |
5cb04436 | 53 | __s32 ndisc_notify; |
b800c3b9 | 54 | __s32 suppress_frag_ndisc; |
1da177e4 LT |
55 | void *sysctl; |
56 | }; | |
56d417b1 BH |
57 | |
58 | struct ipv6_params { | |
59 | __s32 disable_ipv6; | |
60 | __s32 autoconf; | |
61 | }; | |
62 | extern struct ipv6_params ipv6_defaults; | |
1da177e4 | 63 | #include <linux/icmpv6.h> |
1da177e4 LT |
64 | #include <linux/tcp.h> |
65 | #include <linux/udp.h> | |
66 | ||
14c85021 ACM |
67 | #include <net/inet_sock.h> |
68 | ||
0660e03f ACM |
69 | static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb) |
70 | { | |
71 | return (struct ipv6hdr *)skb_network_header(skb); | |
72 | } | |
73 | ||
6a674e9c JG |
74 | static inline struct ipv6hdr *inner_ipv6_hdr(const struct sk_buff *skb) |
75 | { | |
76 | return (struct ipv6hdr *)skb_inner_network_header(skb); | |
77 | } | |
78 | ||
39b89160 ACM |
79 | static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb) |
80 | { | |
9c70220b | 81 | return (struct ipv6hdr *)skb_transport_header(skb); |
39b89160 ACM |
82 | } |
83 | ||
1da177e4 LT |
84 | /* |
85 | This structure contains results of exthdrs parsing | |
86 | as offsets from skb->nh. | |
87 | */ | |
88 | ||
89 | struct inet6_skb_parm { | |
90 | int iif; | |
dd3332bf | 91 | __be16 ra; |
1da177e4 LT |
92 | __u16 hop; |
93 | __u16 dst0; | |
94 | __u16 srcrt; | |
95 | __u16 dst1; | |
333fad53 | 96 | __u16 lastopt; |
e7c38157 | 97 | __u16 nhoff; |
3e3850e9 | 98 | __u16 flags; |
59fbb3a6 | 99 | #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) |
8dd7368d DM |
100 | __u16 dsthao; |
101 | #endif | |
4cdd3408 | 102 | __u16 frag_max_size; |
3e3850e9 PM |
103 | |
104 | #define IP6SKB_XFRM_TRANSFORMED 1 | |
7bc570c8 | 105 | #define IP6SKB_FORWARDED 2 |
9c6eb28a | 106 | #define IP6SKB_REROUTED 4 |
dd3332bf | 107 | #define IP6SKB_ROUTERALERT 8 |
f46078cf | 108 | #define IP6SKB_FRAGMENTED 16 |
1da177e4 LT |
109 | }; |
110 | ||
111 | #define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb)) | |
4b340ae2 | 112 | #define IP6CBMTU(skb) ((struct ip6_mtuinfo *)((skb)->cb)) |
1da177e4 | 113 | |
505cbfc5 ACM |
114 | static inline int inet6_iif(const struct sk_buff *skb) |
115 | { | |
116 | return IP6CB(skb)->iif; | |
117 | } | |
118 | ||
ca304b61 ACM |
119 | struct tcp6_request_sock { |
120 | struct tcp_request_sock tcp6rsk_tcp; | |
ca304b61 | 121 | }; |
2e6599cb | 122 | |
20283d84 HX |
123 | struct ipv6_mc_socklist; |
124 | struct ipv6_ac_socklist; | |
125 | struct ipv6_fl_socklist; | |
126 | ||
1da177e4 LT |
127 | /** |
128 | * struct ipv6_pinfo - ipv6 private area | |
129 | * | |
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 | |
134 | */ | |
135 | struct ipv6_pinfo { | |
136 | struct in6_addr saddr; | |
b24a2516 | 137 | struct in6_pktinfo sticky_pktinfo; |
d3818c92 | 138 | const struct in6_addr *daddr_cache; |
8e1ef0a9 | 139 | #ifdef CONFIG_IPV6_SUBTREES |
d3818c92 | 140 | const struct in6_addr *saddr_cache; |
8e1ef0a9 | 141 | #endif |
1da177e4 | 142 | |
90bcaf7b | 143 | __be32 flow_label; |
1da177e4 | 144 | __u32 frag_size; |
1d5d236d YH |
145 | |
146 | /* | |
147 | * Packed in 16bits. | |
148 | * Omit one shift by by putting the signed field at MSB. | |
149 | */ | |
150 | #if defined(__BIG_ENDIAN_BITFIELD) | |
151 | __s16 hop_limit:9; | |
152 | __u16 __unused_1:7; | |
153 | #else | |
154 | __u16 __unused_1:7; | |
155 | __s16 hop_limit:9; | |
156 | #endif | |
157 | ||
158 | #if defined(__BIG_ENDIAN_BITFIELD) | |
159 | /* Packed in 16bits. */ | |
160 | __s16 mcast_hops:9; | |
161 | __u16 __unused_2:6, | |
162 | mc_loop:1; | |
163 | #else | |
164 | __u16 mc_loop:1, | |
165 | __unused_2:6; | |
166 | __s16 mcast_hops:9; | |
167 | #endif | |
c4062dfc | 168 | int ucast_oif; |
1da177e4 LT |
169 | int mcast_oif; |
170 | ||
171 | /* pktoption flags */ | |
172 | union { | |
173 | struct { | |
4c752098 YH |
174 | __u16 srcrt:1, |
175 | osrcrt:1, | |
1da177e4 | 176 | rxinfo:1, |
333fad53 | 177 | rxoinfo:1, |
1da177e4 | 178 | rxhlim:1, |
333fad53 | 179 | rxohlim:1, |
1da177e4 | 180 | hopopts:1, |
333fad53 | 181 | ohopopts:1, |
1da177e4 | 182 | dstopts:1, |
333fad53 | 183 | odstopts:1, |
41a1f8ea | 184 | rxflow:1, |
793b1473 | 185 | rxtclass:1, |
6c468622 BS |
186 | rxpmtu:1, |
187 | rxorigdstaddr:1; | |
188 | /* 2 bits hole */ | |
1da177e4 | 189 | } bits; |
333fad53 | 190 | __u16 all; |
1da177e4 LT |
191 | } rxopt; |
192 | ||
193 | /* sockopt flags */ | |
793b1473 | 194 | __u16 recverr:1, |
1da177e4 | 195 | sndflow:1, |
df3687ff | 196 | repflow:1, |
93b36cf3 | 197 | pmtudisc:3, |
9fe516ba | 198 | padding:1, /* 1 bit hole */ |
793b1473 | 199 | srcprefs:3, /* 001: prefer temporary address |
7cbca67c YH |
200 | * 010: prefer public address |
201 | * 100: prefer care-of address | |
202 | */ | |
cb1ce2ef TH |
203 | dontfrag:1, |
204 | autoflowlabel:1; | |
e802af9c | 205 | __u8 min_hopcount; |
41a1f8ea | 206 | __u8 tclass; |
1397ed35 | 207 | __be32 rcv_flowinfo; |
1da177e4 LT |
208 | |
209 | __u32 dst_cookie; | |
5d299f3d | 210 | __u32 rx_dst_cookie; |
1da177e4 | 211 | |
456b61bc | 212 | struct ipv6_mc_socklist __rcu *ipv6_mc_list; |
1da177e4 | 213 | struct ipv6_ac_socklist *ipv6_ac_list; |
18367681 | 214 | struct ipv6_fl_socklist __rcu *ipv6_fl_list; |
1da177e4 LT |
215 | |
216 | struct ipv6_txoptions *opt; | |
217 | struct sk_buff *pktoptions; | |
4b340ae2 | 218 | struct sk_buff *rxpmtu; |
1da177e4 LT |
219 | struct { |
220 | struct ipv6_txoptions *opt; | |
47254745 YH |
221 | u8 hop_limit; |
222 | u8 tclass; | |
1da177e4 LT |
223 | } cork; |
224 | }; | |
225 | ||
226 | /* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */ | |
227 | struct raw6_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; | |
d1db275d | 233 | __u32 ip6mr_table; |
1da177e4 LT |
234 | /* ipv6_pinfo has to be the last member of raw6_sock, see inet6_sk_generic */ |
235 | struct ipv6_pinfo inet6; | |
236 | }; | |
237 | ||
238 | struct udp6_sock { | |
239 | struct udp_sock udp; | |
240 | /* ipv6_pinfo has to be the last member of udp6_sock, see inet6_sk_generic */ | |
241 | struct ipv6_pinfo inet6; | |
242 | }; | |
243 | ||
244 | struct tcp6_sock { | |
245 | struct tcp_sock tcp; | |
246 | /* ipv6_pinfo has to be the last member of tcp6_sock, see inet6_sk_generic */ | |
247 | struct ipv6_pinfo inet6; | |
248 | }; | |
249 | ||
b9750ce1 ACM |
250 | extern int inet6_sk_rebuild_header(struct sock *sk); |
251 | ||
48ee3569 DM |
252 | struct tcp6_timewait_sock { |
253 | struct tcp_timewait_sock tcp6tw_tcp; | |
48ee3569 DM |
254 | }; |
255 | ||
dfd56b8b | 256 | #if IS_ENABLED(CONFIG_IPV6) |
1da177e4 LT |
257 | static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk) |
258 | { | |
259 | return inet_sk(__sk)->pinet6; | |
260 | } | |
261 | ||
262 | static inline struct raw6_sock *raw6_sk(const struct sock *sk) | |
263 | { | |
264 | return (struct raw6_sock *)sk; | |
265 | } | |
266 | ||
267 | static inline void inet_sk_copy_descendant(struct sock *sk_to, | |
268 | const struct sock *sk_from) | |
269 | { | |
270 | int ancestor_size = sizeof(struct inet_sock); | |
271 | ||
272 | if (sk_from->sk_family == PF_INET6) | |
273 | ancestor_size += sizeof(struct ipv6_pinfo); | |
274 | ||
275 | __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size); | |
276 | } | |
277 | ||
9fe516ba ED |
278 | #define __ipv6_only_sock(sk) (sk->sk_ipv6only) |
279 | #define ipv6_only_sock(sk) (__ipv6_only_sock(sk)) | |
4b261c75 HFS |
280 | #define ipv6_sk_rxinfo(sk) ((sk)->sk_family == PF_INET6 && \ |
281 | inet6_sk(sk)->rxopt.bits.rxinfo) | |
8feaf0c0 | 282 | |
efe4208f | 283 | static inline const struct in6_addr *inet6_rcv_saddr(const struct sock *sk) |
8feaf0c0 | 284 | { |
efe4208f ED |
285 | if (sk->sk_family == AF_INET6) |
286 | return &sk->sk_v6_rcv_saddr; | |
287 | return NULL; | |
8feaf0c0 ACM |
288 | } |
289 | ||
463c84b9 | 290 | static inline int inet_v6_ipv6only(const struct sock *sk) |
8feaf0c0 | 291 | { |
9fe516ba ED |
292 | /* ipv6only field is at same position for timewait and other sockets */ |
293 | return ipv6_only_sock(sk); | |
8feaf0c0 | 294 | } |
1da177e4 LT |
295 | #else |
296 | #define __ipv6_only_sock(sk) 0 | |
297 | #define ipv6_only_sock(sk) 0 | |
4b261c75 | 298 | #define ipv6_sk_rxinfo(sk) 0 |
1da177e4 LT |
299 | |
300 | static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk) | |
301 | { | |
302 | return NULL; | |
303 | } | |
304 | ||
ca304b61 ACM |
305 | static inline struct inet6_request_sock * |
306 | inet6_rsk(const struct request_sock *rsk) | |
307 | { | |
308 | return NULL; | |
309 | } | |
310 | ||
1da177e4 LT |
311 | static inline struct raw6_sock *raw6_sk(const struct sock *sk) |
312 | { | |
313 | return NULL; | |
314 | } | |
315 | ||
0fa1a53e | 316 | #define inet6_rcv_saddr(__sk) NULL |
8feaf0c0 | 317 | #define tcp_twsk_ipv6only(__sk) 0 |
463c84b9 | 318 | #define inet_v6_ipv6only(__sk) 0 |
dfd56b8b | 319 | #endif /* IS_ENABLED(CONFIG_IPV6) */ |
8feaf0c0 | 320 | #endif /* _IPV6_H */ |