Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _IPV6_H |
| 2 | #define _IPV6_H |
| 3 | |
Jaswinder Singh Rajput | 5c6aa2b | 2009-01-30 21:46:43 +0530 | [diff] [blame] | 4 | #include <linux/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | #include <linux/in6.h> |
| 6 | #include <asm/byteorder.h> |
| 7 | |
| 8 | /* The latest drafts declared increase in minimal mtu up to 1280. */ |
| 9 | |
| 10 | #define IPV6_MIN_MTU 1280 |
| 11 | |
| 12 | /* |
| 13 | * Advanced API |
| 14 | * source interface/address selection, source routing, etc... |
| 15 | * *under construction* |
| 16 | */ |
| 17 | |
| 18 | |
| 19 | struct in6_pktinfo { |
| 20 | struct in6_addr ipi6_addr; |
| 21 | int ipi6_ifindex; |
| 22 | }; |
| 23 | |
Brian Haley | 793b147 | 2010-04-23 11:26:07 +0000 | [diff] [blame] | 24 | struct ip6_mtuinfo { |
| 25 | struct sockaddr_in6 ip6m_addr; |
| 26 | __u32 ip6m_mtu; |
| 27 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | |
| 29 | struct in6_ifreq { |
| 30 | struct in6_addr ifr6_addr; |
| 31 | __u32 ifr6_prefixlen; |
| 32 | int ifr6_ifindex; |
| 33 | }; |
| 34 | |
YOSHIFUJI Hideaki | bb4dbf9 | 2007-07-10 22:55:49 -0700 | [diff] [blame] | 35 | #define IPV6_SRCRT_STRICT 0x01 /* Deprecated; will be removed */ |
| 36 | #define IPV6_SRCRT_TYPE_0 0 /* Deprecated; will be removed */ |
Noriaki TAKAMIYA | 642ec62 | 2006-08-23 19:15:07 -0700 | [diff] [blame] | 37 | #define IPV6_SRCRT_TYPE_2 2 /* IPv6 type 2 Routing Header */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
| 39 | /* |
| 40 | * routing header |
| 41 | */ |
| 42 | struct ipv6_rt_hdr { |
| 43 | __u8 nexthdr; |
| 44 | __u8 hdrlen; |
| 45 | __u8 type; |
| 46 | __u8 segments_left; |
| 47 | |
| 48 | /* |
| 49 | * type specific data |
| 50 | * variable length field |
| 51 | */ |
| 52 | }; |
| 53 | |
| 54 | |
| 55 | struct ipv6_opt_hdr { |
| 56 | __u8 nexthdr; |
| 57 | __u8 hdrlen; |
| 58 | /* |
| 59 | * TLV encoded option data follows. |
| 60 | */ |
Changli Gao | 09cd2b9 | 2010-08-22 17:25:05 +0000 | [diff] [blame] | 61 | } __attribute__((packed)); /* required for some archs */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
| 63 | #define ipv6_destopt_hdr ipv6_opt_hdr |
| 64 | #define ipv6_hopopt_hdr ipv6_opt_hdr |
| 65 | |
| 66 | #ifdef __KERNEL__ |
| 67 | #define ipv6_optlen(p) (((p)->hdrlen+1) << 3) |
| 68 | #endif |
| 69 | |
| 70 | /* |
| 71 | * routing header type 0 (used in cmsghdr struct) |
| 72 | */ |
| 73 | |
| 74 | struct rt0_hdr { |
| 75 | struct ipv6_rt_hdr rt_hdr; |
Brian Haley | e6df439 | 2005-09-10 00:15:06 -0700 | [diff] [blame] | 76 | __u32 reserved; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | struct in6_addr addr[0]; |
| 78 | |
| 79 | #define rt0_type rt_hdr.type |
| 80 | }; |
| 81 | |
Noriaki TAKAMIYA | 642ec62 | 2006-08-23 19:15:07 -0700 | [diff] [blame] | 82 | /* |
| 83 | * routing header type 2 |
| 84 | */ |
| 85 | |
| 86 | struct rt2_hdr { |
| 87 | struct ipv6_rt_hdr rt_hdr; |
| 88 | __u32 reserved; |
| 89 | struct in6_addr addr; |
| 90 | |
| 91 | #define rt2_type rt_hdr.type |
| 92 | }; |
| 93 | |
Noriaki TAKAMIYA | 842426e | 2006-08-23 19:21:34 -0700 | [diff] [blame] | 94 | /* |
| 95 | * home address option in destination options header |
| 96 | */ |
| 97 | |
| 98 | struct ipv6_destopt_hao { |
| 99 | __u8 type; |
| 100 | __u8 length; |
| 101 | struct in6_addr addr; |
Changli Gao | 09cd2b9 | 2010-08-22 17:25:05 +0000 | [diff] [blame] | 102 | } __attribute__((packed)); |
Noriaki TAKAMIYA | 842426e | 2006-08-23 19:21:34 -0700 | [diff] [blame] | 103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | /* |
| 105 | * IPv6 fixed header |
| 106 | * |
| 107 | * BEWARE, it is incorrect. The first 4 bits of flow_lbl |
| 108 | * are glued to priority now, forming "class". |
| 109 | */ |
| 110 | |
| 111 | struct ipv6hdr { |
| 112 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 113 | __u8 priority:4, |
| 114 | version:4; |
| 115 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 116 | __u8 version:4, |
| 117 | priority:4; |
| 118 | #else |
| 119 | #error "Please fix <asm/byteorder.h>" |
| 120 | #endif |
| 121 | __u8 flow_lbl[3]; |
| 122 | |
Al Viro | 4350507 | 2006-09-27 18:45:11 -0700 | [diff] [blame] | 123 | __be16 payload_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | __u8 nexthdr; |
| 125 | __u8 hop_limit; |
| 126 | |
| 127 | struct in6_addr saddr; |
| 128 | struct in6_addr daddr; |
| 129 | }; |
| 130 | |
David S. Miller | ebb36a9 | 2008-07-21 13:41:16 -0700 | [diff] [blame] | 131 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | /* |
| 133 | * This structure contains configuration options per IPv6 link. |
| 134 | */ |
| 135 | struct ipv6_devconf { |
| 136 | __s32 forwarding; |
| 137 | __s32 hop_limit; |
| 138 | __s32 mtu6; |
| 139 | __s32 accept_ra; |
| 140 | __s32 accept_redirects; |
| 141 | __s32 autoconf; |
| 142 | __s32 dad_transmits; |
| 143 | __s32 rtr_solicits; |
| 144 | __s32 rtr_solicit_interval; |
| 145 | __s32 rtr_solicit_delay; |
| 146 | __s32 force_mld_version; |
| 147 | #ifdef CONFIG_IPV6_PRIVACY |
| 148 | __s32 use_tempaddr; |
| 149 | __s32 temp_valid_lft; |
| 150 | __s32 temp_prefered_lft; |
| 151 | __s32 regen_max_retry; |
| 152 | __s32 max_desync_factor; |
| 153 | #endif |
| 154 | __s32 max_addresses; |
YOSHIFUJI Hideaki | 65f5c7c | 2006-03-20 16:55:08 -0800 | [diff] [blame] | 155 | __s32 accept_ra_defrtr; |
YOSHIFUJI Hideaki | c4fd30e | 2006-03-20 16:55:26 -0800 | [diff] [blame] | 156 | __s32 accept_ra_pinfo; |
YOSHIFUJI Hideaki | 930d6ff | 2006-03-20 17:05:30 -0800 | [diff] [blame] | 157 | #ifdef CONFIG_IPV6_ROUTER_PREF |
| 158 | __s32 accept_ra_rtr_pref; |
YOSHIFUJI Hideaki | 52e1635 | 2006-03-20 17:05:47 -0800 | [diff] [blame] | 159 | __s32 rtr_probe_interval; |
YOSHIFUJI Hideaki | 09c884d | 2006-03-20 17:07:03 -0800 | [diff] [blame] | 160 | #ifdef CONFIG_IPV6_ROUTE_INFO |
| 161 | __s32 accept_ra_rt_info_max_plen; |
| 162 | #endif |
YOSHIFUJI Hideaki | 930d6ff | 2006-03-20 17:05:30 -0800 | [diff] [blame] | 163 | #endif |
YOSHIFUJI Hideaki | fbea49e | 2006-09-22 14:43:49 -0700 | [diff] [blame] | 164 | __s32 proxy_ndp; |
YOSHIFUJI Hideaki | 0bcbc92 | 2007-04-24 14:58:30 -0700 | [diff] [blame] | 165 | __s32 accept_source_route; |
Neil Horman | 95c385b | 2007-04-25 17:08:10 -0700 | [diff] [blame] | 166 | #ifdef CONFIG_IPV6_OPTIMISTIC_DAD |
| 167 | __s32 optimistic_dad; |
| 168 | #endif |
YOSHIFUJI Hideaki | 7bc570c | 2008-04-03 09:22:53 +0900 | [diff] [blame] | 169 | #ifdef CONFIG_IPV6_MROUTE |
| 170 | __s32 mc_forwarding; |
| 171 | #endif |
YOSHIFUJI Hideaki | 778d80b | 2008-06-28 14:17:11 +0900 | [diff] [blame] | 172 | __s32 disable_ipv6; |
YOSHIFUJI Hideaki | 1b34be7 | 2008-06-28 14:18:38 +0900 | [diff] [blame] | 173 | __s32 accept_dad; |
Octavian Purdila | f7734fd | 2009-10-02 11:39:15 +0000 | [diff] [blame] | 174 | __s32 force_tllao; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | void *sysctl; |
| 176 | }; |
Brian Haley | 56d417b | 2009-06-01 03:07:33 -0700 | [diff] [blame] | 177 | |
| 178 | struct ipv6_params { |
| 179 | __s32 disable_ipv6; |
| 180 | __s32 autoconf; |
| 181 | }; |
| 182 | extern struct ipv6_params ipv6_defaults; |
David S. Miller | ebb36a9 | 2008-07-21 13:41:16 -0700 | [diff] [blame] | 183 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
| 185 | /* index values for the variables in ipv6_devconf */ |
| 186 | enum { |
| 187 | DEVCONF_FORWARDING = 0, |
| 188 | DEVCONF_HOPLIMIT, |
| 189 | DEVCONF_MTU6, |
| 190 | DEVCONF_ACCEPT_RA, |
| 191 | DEVCONF_ACCEPT_REDIRECTS, |
| 192 | DEVCONF_AUTOCONF, |
| 193 | DEVCONF_DAD_TRANSMITS, |
| 194 | DEVCONF_RTR_SOLICITS, |
| 195 | DEVCONF_RTR_SOLICIT_INTERVAL, |
| 196 | DEVCONF_RTR_SOLICIT_DELAY, |
| 197 | DEVCONF_USE_TEMPADDR, |
| 198 | DEVCONF_TEMP_VALID_LFT, |
| 199 | DEVCONF_TEMP_PREFERED_LFT, |
| 200 | DEVCONF_REGEN_MAX_RETRY, |
| 201 | DEVCONF_MAX_DESYNC_FACTOR, |
| 202 | DEVCONF_MAX_ADDRESSES, |
| 203 | DEVCONF_FORCE_MLD_VERSION, |
YOSHIFUJI Hideaki | 65f5c7c | 2006-03-20 16:55:08 -0800 | [diff] [blame] | 204 | DEVCONF_ACCEPT_RA_DEFRTR, |
YOSHIFUJI Hideaki | c4fd30e | 2006-03-20 16:55:26 -0800 | [diff] [blame] | 205 | DEVCONF_ACCEPT_RA_PINFO, |
YOSHIFUJI Hideaki | 930d6ff | 2006-03-20 17:05:30 -0800 | [diff] [blame] | 206 | DEVCONF_ACCEPT_RA_RTR_PREF, |
YOSHIFUJI Hideaki | 52e1635 | 2006-03-20 17:05:47 -0800 | [diff] [blame] | 207 | DEVCONF_RTR_PROBE_INTERVAL, |
YOSHIFUJI Hideaki | 09c884d | 2006-03-20 17:07:03 -0800 | [diff] [blame] | 208 | DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN, |
YOSHIFUJI Hideaki | fbea49e | 2006-09-22 14:43:49 -0700 | [diff] [blame] | 209 | DEVCONF_PROXY_NDP, |
Neil Horman | 95c385b | 2007-04-25 17:08:10 -0700 | [diff] [blame] | 210 | DEVCONF_OPTIMISTIC_DAD, |
YOSHIFUJI Hideaki | 4540250 | 2007-05-29 13:23:34 -0700 | [diff] [blame] | 211 | DEVCONF_ACCEPT_SOURCE_ROUTE, |
YOSHIFUJI Hideaki | 7bc570c | 2008-04-03 09:22:53 +0900 | [diff] [blame] | 212 | DEVCONF_MC_FORWARDING, |
YOSHIFUJI Hideaki | 778d80b | 2008-06-28 14:17:11 +0900 | [diff] [blame] | 213 | DEVCONF_DISABLE_IPV6, |
YOSHIFUJI Hideaki | 1b34be7 | 2008-06-28 14:18:38 +0900 | [diff] [blame] | 214 | DEVCONF_ACCEPT_DAD, |
Jin Dongming | e0e6f55 | 2009-10-08 22:44:47 -0700 | [diff] [blame] | 215 | DEVCONF_FORCE_TLLAO, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | DEVCONF_MAX |
| 217 | }; |
| 218 | |
| 219 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | #include <linux/icmpv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | #include <linux/tcp.h> |
| 222 | #include <linux/udp.h> |
| 223 | |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 224 | #include <net/inet_sock.h> |
| 225 | |
Arnaldo Carvalho de Melo | 0660e03 | 2007-04-25 17:54:47 -0700 | [diff] [blame] | 226 | static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb) |
| 227 | { |
| 228 | return (struct ipv6hdr *)skb_network_header(skb); |
| 229 | } |
| 230 | |
Arnaldo Carvalho de Melo | 39b8916 | 2007-04-10 21:06:25 -0700 | [diff] [blame] | 231 | static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb) |
| 232 | { |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 233 | return (struct ipv6hdr *)skb_transport_header(skb); |
Arnaldo Carvalho de Melo | 39b8916 | 2007-04-10 21:06:25 -0700 | [diff] [blame] | 234 | } |
| 235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | /* |
| 237 | This structure contains results of exthdrs parsing |
| 238 | as offsets from skb->nh. |
| 239 | */ |
| 240 | |
| 241 | struct inet6_skb_parm { |
| 242 | int iif; |
| 243 | __u16 ra; |
| 244 | __u16 hop; |
| 245 | __u16 dst0; |
| 246 | __u16 srcrt; |
| 247 | __u16 dst1; |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 248 | __u16 lastopt; |
David S. Miller | e7c3815 | 2010-07-19 22:01:26 -0700 | [diff] [blame] | 249 | __u16 nhoff; |
Patrick McHardy | 3e3850e | 2006-01-06 23:04:54 -0800 | [diff] [blame] | 250 | __u16 flags; |
Masahide NAKAMURA | 59fbb3a6 | 2007-06-26 23:56:32 -0700 | [diff] [blame] | 251 | #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) |
David S. Miller | 8dd7368 | 2006-08-23 19:25:55 -0700 | [diff] [blame] | 252 | __u16 dsthao; |
| 253 | #endif |
Patrick McHardy | 3e3850e | 2006-01-06 23:04:54 -0800 | [diff] [blame] | 254 | |
| 255 | #define IP6SKB_XFRM_TRANSFORMED 1 |
YOSHIFUJI Hideaki | 7bc570c | 2008-04-03 09:22:53 +0900 | [diff] [blame] | 256 | #define IP6SKB_FORWARDED 2 |
Jan Engelhardt | 9c6eb28 | 2010-04-13 15:32:16 +0200 | [diff] [blame] | 257 | #define IP6SKB_REROUTED 4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | }; |
| 259 | |
| 260 | #define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb)) |
Brian Haley | 4b340ae | 2010-04-23 11:26:09 +0000 | [diff] [blame] | 261 | #define IP6CBMTU(skb) ((struct ip6_mtuinfo *)((skb)->cb)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 263 | static inline int inet6_iif(const struct sk_buff *skb) |
| 264 | { |
| 265 | return IP6CB(skb)->iif; |
| 266 | } |
| 267 | |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 268 | struct inet6_request_sock { |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 269 | struct in6_addr loc_addr; |
| 270 | struct in6_addr rmt_addr; |
| 271 | struct sk_buff *pktopts; |
| 272 | int iif; |
| 273 | }; |
| 274 | |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 275 | struct tcp6_request_sock { |
| 276 | struct tcp_request_sock tcp6rsk_tcp; |
| 277 | struct inet6_request_sock tcp6rsk_inet6; |
| 278 | }; |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 279 | |
Herbert Xu | 20283d8 | 2007-07-30 17:05:49 -0700 | [diff] [blame] | 280 | struct ipv6_mc_socklist; |
| 281 | struct ipv6_ac_socklist; |
| 282 | struct ipv6_fl_socklist; |
| 283 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | /** |
| 285 | * struct ipv6_pinfo - ipv6 private area |
| 286 | * |
| 287 | * In the struct sock hierarchy (tcp6_sock, upd6_sock, etc) |
| 288 | * this _must_ be the last member, so that inet6_sk_generic |
| 289 | * is able to calculate its offset from the base struct sock |
| 290 | * by using the struct proto->slab_obj_size member. -acme |
| 291 | */ |
| 292 | struct ipv6_pinfo { |
| 293 | struct in6_addr saddr; |
| 294 | struct in6_addr rcv_saddr; |
| 295 | struct in6_addr daddr; |
Yang Hongyang | b24a251 | 2008-12-16 02:06:23 -0800 | [diff] [blame] | 296 | struct in6_pktinfo sticky_pktinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | struct in6_addr *daddr_cache; |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 298 | #ifdef CONFIG_IPV6_SUBTREES |
| 299 | struct in6_addr *saddr_cache; |
| 300 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | |
Al Viro | 90bcaf7 | 2006-11-08 00:25:17 -0800 | [diff] [blame] | 302 | __be32 flow_label; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | __u32 frag_size; |
YOSHIFUJI Hideaki | 1d5d236 | 2008-03-10 10:56:55 -0400 | [diff] [blame] | 304 | |
| 305 | /* |
| 306 | * Packed in 16bits. |
| 307 | * Omit one shift by by putting the signed field at MSB. |
| 308 | */ |
| 309 | #if defined(__BIG_ENDIAN_BITFIELD) |
| 310 | __s16 hop_limit:9; |
| 311 | __u16 __unused_1:7; |
| 312 | #else |
| 313 | __u16 __unused_1:7; |
| 314 | __s16 hop_limit:9; |
| 315 | #endif |
| 316 | |
| 317 | #if defined(__BIG_ENDIAN_BITFIELD) |
| 318 | /* Packed in 16bits. */ |
| 319 | __s16 mcast_hops:9; |
| 320 | __u16 __unused_2:6, |
| 321 | mc_loop:1; |
| 322 | #else |
| 323 | __u16 mc_loop:1, |
| 324 | __unused_2:6; |
| 325 | __s16 mcast_hops:9; |
| 326 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | int mcast_oif; |
| 328 | |
| 329 | /* pktoption flags */ |
| 330 | union { |
| 331 | struct { |
YOSHIFUJI Hideaki | 4c75209 | 2007-05-23 13:28:48 +0900 | [diff] [blame] | 332 | __u16 srcrt:1, |
| 333 | osrcrt:1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | rxinfo:1, |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 335 | rxoinfo:1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | rxhlim:1, |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 337 | rxohlim:1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | hopopts:1, |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 339 | ohopopts:1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | dstopts:1, |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 341 | odstopts:1, |
YOSHIFUJI Hideaki | 41a1f8e | 2005-09-08 10:19:03 +0900 | [diff] [blame] | 342 | rxflow:1, |
Brian Haley | 793b147 | 2010-04-23 11:26:07 +0000 | [diff] [blame] | 343 | rxtclass:1, |
| 344 | rxpmtu:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | } bits; |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 346 | __u16 all; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | } rxopt; |
| 348 | |
| 349 | /* sockopt flags */ |
Brian Haley | 793b147 | 2010-04-23 11:26:07 +0000 | [diff] [blame] | 350 | __u16 recverr:1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | sndflow:1, |
| 352 | pmtudisc:2, |
YOSHIFUJI Hideaki | 7cbca67 | 2008-03-25 09:37:42 +0900 | [diff] [blame] | 353 | ipv6only:1, |
Brian Haley | 793b147 | 2010-04-23 11:26:07 +0000 | [diff] [blame] | 354 | srcprefs:3, /* 001: prefer temporary address |
YOSHIFUJI Hideaki | 7cbca67 | 2008-03-25 09:37:42 +0900 | [diff] [blame] | 355 | * 010: prefer public address |
| 356 | * 100: prefer care-of address |
| 357 | */ |
Brian Haley | 793b147 | 2010-04-23 11:26:07 +0000 | [diff] [blame] | 358 | dontfrag:1; |
Stephen Hemminger | e802af9 | 2010-04-22 15:24:53 -0700 | [diff] [blame] | 359 | __u8 min_hopcount; |
YOSHIFUJI Hideaki | 41a1f8e | 2005-09-08 10:19:03 +0900 | [diff] [blame] | 360 | __u8 tclass; |
Brian Haley | 793b147 | 2010-04-23 11:26:07 +0000 | [diff] [blame] | 361 | __u8 padding; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | |
| 363 | __u32 dst_cookie; |
| 364 | |
| 365 | struct ipv6_mc_socklist *ipv6_mc_list; |
| 366 | struct ipv6_ac_socklist *ipv6_ac_list; |
| 367 | struct ipv6_fl_socklist *ipv6_fl_list; |
| 368 | |
| 369 | struct ipv6_txoptions *opt; |
| 370 | struct sk_buff *pktoptions; |
Brian Haley | 4b340ae | 2010-04-23 11:26:09 +0000 | [diff] [blame] | 371 | struct sk_buff *rxpmtu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | struct { |
| 373 | struct ipv6_txoptions *opt; |
YOSHIFUJI Hideaki | 4725474 | 2008-03-10 04:41:33 -0400 | [diff] [blame] | 374 | u8 hop_limit; |
| 375 | u8 tclass; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | } cork; |
| 377 | }; |
| 378 | |
| 379 | /* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */ |
| 380 | struct raw6_sock { |
| 381 | /* inet_sock has to be the first member of raw6_sock */ |
| 382 | struct inet_sock inet; |
| 383 | __u32 checksum; /* perform checksum */ |
| 384 | __u32 offset; /* checksum offset */ |
| 385 | struct icmp6_filter filter; |
Patrick McHardy | d1db275 | 2010-05-11 14:40:55 +0200 | [diff] [blame] | 386 | __u32 ip6mr_table; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | /* ipv6_pinfo has to be the last member of raw6_sock, see inet6_sk_generic */ |
| 388 | struct ipv6_pinfo inet6; |
| 389 | }; |
| 390 | |
| 391 | struct udp6_sock { |
| 392 | struct udp_sock udp; |
| 393 | /* ipv6_pinfo has to be the last member of udp6_sock, see inet6_sk_generic */ |
| 394 | struct ipv6_pinfo inet6; |
| 395 | }; |
| 396 | |
| 397 | struct tcp6_sock { |
| 398 | struct tcp_sock tcp; |
| 399 | /* ipv6_pinfo has to be the last member of tcp6_sock, see inet6_sk_generic */ |
| 400 | struct ipv6_pinfo inet6; |
| 401 | }; |
| 402 | |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 403 | extern int inet6_sk_rebuild_header(struct sock *sk); |
| 404 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) |
| 406 | static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk) |
| 407 | { |
| 408 | return inet_sk(__sk)->pinet6; |
| 409 | } |
| 410 | |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 411 | static inline struct inet6_request_sock * |
| 412 | inet6_rsk(const struct request_sock *rsk) |
| 413 | { |
| 414 | return (struct inet6_request_sock *)(((u8 *)rsk) + |
| 415 | inet_rsk(rsk)->inet6_rsk_offset); |
| 416 | } |
| 417 | |
| 418 | static inline u32 inet6_rsk_offset(struct request_sock *rsk) |
| 419 | { |
| 420 | return rsk->rsk_ops->obj_size - sizeof(struct inet6_request_sock); |
| 421 | } |
| 422 | |
| 423 | static inline struct request_sock *inet6_reqsk_alloc(struct request_sock_ops *ops) |
| 424 | { |
| 425 | struct request_sock *req = reqsk_alloc(ops); |
| 426 | |
Arnaldo Carvalho de Melo | ce4a7d0 | 2008-06-10 12:39:35 -0700 | [diff] [blame] | 427 | if (req != NULL) { |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 428 | inet_rsk(req)->inet6_rsk_offset = inet6_rsk_offset(req); |
Arnaldo Carvalho de Melo | ce4a7d0 | 2008-06-10 12:39:35 -0700 | [diff] [blame] | 429 | inet6_rsk(req)->pktopts = NULL; |
| 430 | } |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 431 | |
| 432 | return req; |
| 433 | } |
| 434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | static inline struct raw6_sock *raw6_sk(const struct sock *sk) |
| 436 | { |
| 437 | return (struct raw6_sock *)sk; |
| 438 | } |
| 439 | |
| 440 | static inline void inet_sk_copy_descendant(struct sock *sk_to, |
| 441 | const struct sock *sk_from) |
| 442 | { |
| 443 | int ancestor_size = sizeof(struct inet_sock); |
| 444 | |
| 445 | if (sk_from->sk_family == PF_INET6) |
| 446 | ancestor_size += sizeof(struct ipv6_pinfo); |
| 447 | |
| 448 | __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size); |
| 449 | } |
| 450 | |
| 451 | #define __ipv6_only_sock(sk) (inet6_sk(sk)->ipv6only) |
| 452 | #define ipv6_only_sock(sk) ((sk)->sk_family == PF_INET6 && __ipv6_only_sock(sk)) |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 453 | |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 454 | struct inet6_timewait_sock { |
| 455 | struct in6_addr tw_v6_daddr; |
| 456 | struct in6_addr tw_v6_rcv_saddr; |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 457 | }; |
| 458 | |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 459 | struct tcp6_timewait_sock { |
| 460 | struct tcp_timewait_sock tcp6tw_tcp; |
| 461 | struct inet6_timewait_sock tcp6tw_inet6; |
| 462 | }; |
| 463 | |
| 464 | static inline u16 inet6_tw_offset(const struct proto *prot) |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 465 | { |
Arnaldo Carvalho de Melo | 6d6ee43 | 2005-12-13 23:25:19 -0800 | [diff] [blame] | 466 | return prot->twsk_prot->twsk_obj_size - |
| 467 | sizeof(struct inet6_timewait_sock); |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 468 | } |
| 469 | |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 470 | static inline struct inet6_timewait_sock *inet6_twsk(const struct sock *sk) |
| 471 | { |
| 472 | return (struct inet6_timewait_sock *)(((u8 *)sk) + |
| 473 | inet_twsk(sk)->tw_ipv6_offset); |
| 474 | } |
| 475 | |
| 476 | static inline struct in6_addr *__inet6_rcv_saddr(const struct sock *sk) |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 477 | { |
| 478 | return likely(sk->sk_state != TCP_TIME_WAIT) ? |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 479 | &inet6_sk(sk)->rcv_saddr : &inet6_twsk(sk)->tw_v6_rcv_saddr; |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 480 | } |
| 481 | |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 482 | static inline struct in6_addr *inet6_rcv_saddr(const struct sock *sk) |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 483 | { |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 484 | return sk->sk_family == AF_INET6 ? __inet6_rcv_saddr(sk) : NULL; |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 485 | } |
| 486 | |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 487 | static inline int inet_v6_ipv6only(const struct sock *sk) |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 488 | { |
| 489 | return likely(sk->sk_state != TCP_TIME_WAIT) ? |
Arnaldo Carvalho de Melo | 3f421ba | 2005-08-09 20:11:08 -0700 | [diff] [blame] | 490 | ipv6_only_sock(sk) : inet_twsk(sk)->tw_ipv6only; |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 491 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | #else |
| 493 | #define __ipv6_only_sock(sk) 0 |
| 494 | #define ipv6_only_sock(sk) 0 |
| 495 | |
| 496 | static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk) |
| 497 | { |
| 498 | return NULL; |
| 499 | } |
| 500 | |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 501 | static inline struct inet6_request_sock * |
| 502 | inet6_rsk(const struct request_sock *rsk) |
| 503 | { |
| 504 | return NULL; |
| 505 | } |
| 506 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | static inline struct raw6_sock *raw6_sk(const struct sock *sk) |
| 508 | { |
| 509 | return NULL; |
| 510 | } |
| 511 | |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 512 | #define __inet6_rcv_saddr(__sk) NULL |
| 513 | #define inet6_rcv_saddr(__sk) NULL |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 514 | #define tcp_twsk_ipv6only(__sk) 0 |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 515 | #define inet_v6_ipv6only(__sk) 0 |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 516 | #endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | |
Pavel Emelyanov | d86e0da | 2008-01-31 05:07:21 -0800 | [diff] [blame] | 518 | #define INET6_MATCH(__sk, __net, __hash, __saddr, __daddr, __ports, __dif)\ |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 519 | (((__sk)->sk_hash == (__hash)) && sock_net((__sk)) == (__net) && \ |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 520 | ((*((__portpair *)&(inet_sk(__sk)->inet_dport))) == (__ports)) && \ |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 521 | ((__sk)->sk_family == AF_INET6) && \ |
| 522 | ipv6_addr_equal(&inet6_sk(__sk)->daddr, (__saddr)) && \ |
| 523 | ipv6_addr_equal(&inet6_sk(__sk)->rcv_saddr, (__daddr)) && \ |
| 524 | (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | |
Pavel Emelyanov | d86e0da | 2008-01-31 05:07:21 -0800 | [diff] [blame] | 526 | #define INET6_TW_MATCH(__sk, __net, __hash, __saddr, __daddr, __ports, __dif) \ |
YOSHIFUJI Hideaki | 3b1e0a6 | 2008-03-26 02:26:21 +0900 | [diff] [blame] | 527 | (((__sk)->sk_hash == (__hash)) && sock_net((__sk)) == (__net) && \ |
Pavel Emelyanov | 535174e | 2008-01-31 05:03:27 -0800 | [diff] [blame] | 528 | (*((__portpair *)&(inet_twsk(__sk)->tw_dport)) == (__ports)) && \ |
| 529 | ((__sk)->sk_family == PF_INET6) && \ |
| 530 | (ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_daddr, (__saddr))) && \ |
| 531 | (ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_rcv_saddr, (__daddr))) && \ |
| 532 | (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) |
| 533 | |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 534 | #endif /* __KERNEL__ */ |
| 535 | |
| 536 | #endif /* _IPV6_H */ |