Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _IPV6_H |
| 2 | #define _IPV6_H |
| 3 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | #include <linux/in6.h> |
| 5 | #include <asm/byteorder.h> |
| 6 | |
| 7 | /* The latest drafts declared increase in minimal mtu up to 1280. */ |
| 8 | |
| 9 | #define IPV6_MIN_MTU 1280 |
| 10 | |
| 11 | /* |
| 12 | * Advanced API |
| 13 | * source interface/address selection, source routing, etc... |
| 14 | * *under construction* |
| 15 | */ |
| 16 | |
| 17 | |
| 18 | struct in6_pktinfo { |
| 19 | struct in6_addr ipi6_addr; |
| 20 | int ipi6_ifindex; |
| 21 | }; |
| 22 | |
| 23 | |
| 24 | struct in6_ifreq { |
| 25 | struct in6_addr ifr6_addr; |
| 26 | __u32 ifr6_prefixlen; |
| 27 | int ifr6_ifindex; |
| 28 | }; |
| 29 | |
| 30 | #define IPV6_SRCRT_STRICT 0x01 /* this hop must be a neighbor */ |
| 31 | #define IPV6_SRCRT_TYPE_0 0 /* IPv6 type 0 Routing Header */ |
Noriaki TAKAMIYA | 642ec62 | 2006-08-23 19:15:07 -0700 | [diff] [blame] | 32 | #define IPV6_SRCRT_TYPE_2 2 /* IPv6 type 2 Routing Header */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
| 34 | /* |
| 35 | * routing header |
| 36 | */ |
| 37 | struct ipv6_rt_hdr { |
| 38 | __u8 nexthdr; |
| 39 | __u8 hdrlen; |
| 40 | __u8 type; |
| 41 | __u8 segments_left; |
| 42 | |
| 43 | /* |
| 44 | * type specific data |
| 45 | * variable length field |
| 46 | */ |
| 47 | }; |
| 48 | |
| 49 | |
| 50 | struct ipv6_opt_hdr { |
| 51 | __u8 nexthdr; |
| 52 | __u8 hdrlen; |
| 53 | /* |
| 54 | * TLV encoded option data follows. |
| 55 | */ |
| 56 | }; |
| 57 | |
| 58 | #define ipv6_destopt_hdr ipv6_opt_hdr |
| 59 | #define ipv6_hopopt_hdr ipv6_opt_hdr |
| 60 | |
| 61 | #ifdef __KERNEL__ |
| 62 | #define ipv6_optlen(p) (((p)->hdrlen+1) << 3) |
| 63 | #endif |
| 64 | |
| 65 | /* |
| 66 | * routing header type 0 (used in cmsghdr struct) |
| 67 | */ |
| 68 | |
| 69 | struct rt0_hdr { |
| 70 | struct ipv6_rt_hdr rt_hdr; |
Brian Haley | e6df439 | 2005-09-10 00:15:06 -0700 | [diff] [blame] | 71 | __u32 reserved; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | struct in6_addr addr[0]; |
| 73 | |
| 74 | #define rt0_type rt_hdr.type |
| 75 | }; |
| 76 | |
Noriaki TAKAMIYA | 642ec62 | 2006-08-23 19:15:07 -0700 | [diff] [blame] | 77 | /* |
| 78 | * routing header type 2 |
| 79 | */ |
| 80 | |
| 81 | struct rt2_hdr { |
| 82 | struct ipv6_rt_hdr rt_hdr; |
| 83 | __u32 reserved; |
| 84 | struct in6_addr addr; |
| 85 | |
| 86 | #define rt2_type rt_hdr.type |
| 87 | }; |
| 88 | |
Noriaki TAKAMIYA | 842426e | 2006-08-23 19:21:34 -0700 | [diff] [blame] | 89 | /* |
| 90 | * home address option in destination options header |
| 91 | */ |
| 92 | |
| 93 | struct ipv6_destopt_hao { |
| 94 | __u8 type; |
| 95 | __u8 length; |
| 96 | struct in6_addr addr; |
| 97 | } __attribute__ ((__packed__)); |
| 98 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | struct ipv6_auth_hdr { |
| 100 | __u8 nexthdr; |
| 101 | __u8 hdrlen; /* This one is measured in 32 bit units! */ |
Al Viro | 4350507 | 2006-09-27 18:45:11 -0700 | [diff] [blame] | 102 | __be16 reserved; |
| 103 | __be32 spi; |
| 104 | __be32 seq_no; /* Sequence number */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | __u8 auth_data[0]; /* Length variable but >=4. Mind the 64 bit alignment! */ |
| 106 | }; |
| 107 | |
| 108 | struct ipv6_esp_hdr { |
Al Viro | 4350507 | 2006-09-27 18:45:11 -0700 | [diff] [blame] | 109 | __be32 spi; |
| 110 | __be32 seq_no; /* Sequence number */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | __u8 enc_data[0]; /* Length variable but >=8. Mind the 64 bit alignment! */ |
| 112 | }; |
| 113 | |
| 114 | struct ipv6_comp_hdr { |
| 115 | __u8 nexthdr; |
| 116 | __u8 flags; |
Al Viro | 4350507 | 2006-09-27 18:45:11 -0700 | [diff] [blame] | 117 | __be16 cpi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | }; |
| 119 | |
| 120 | /* |
| 121 | * IPv6 fixed header |
| 122 | * |
| 123 | * BEWARE, it is incorrect. The first 4 bits of flow_lbl |
| 124 | * are glued to priority now, forming "class". |
| 125 | */ |
| 126 | |
| 127 | struct ipv6hdr { |
| 128 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 129 | __u8 priority:4, |
| 130 | version:4; |
| 131 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 132 | __u8 version:4, |
| 133 | priority:4; |
| 134 | #else |
| 135 | #error "Please fix <asm/byteorder.h>" |
| 136 | #endif |
| 137 | __u8 flow_lbl[3]; |
| 138 | |
Al Viro | 4350507 | 2006-09-27 18:45:11 -0700 | [diff] [blame] | 139 | __be16 payload_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | __u8 nexthdr; |
| 141 | __u8 hop_limit; |
| 142 | |
| 143 | struct in6_addr saddr; |
| 144 | struct in6_addr daddr; |
| 145 | }; |
| 146 | |
| 147 | /* |
| 148 | * This structure contains configuration options per IPv6 link. |
| 149 | */ |
| 150 | struct ipv6_devconf { |
| 151 | __s32 forwarding; |
| 152 | __s32 hop_limit; |
| 153 | __s32 mtu6; |
| 154 | __s32 accept_ra; |
| 155 | __s32 accept_redirects; |
| 156 | __s32 autoconf; |
| 157 | __s32 dad_transmits; |
| 158 | __s32 rtr_solicits; |
| 159 | __s32 rtr_solicit_interval; |
| 160 | __s32 rtr_solicit_delay; |
| 161 | __s32 force_mld_version; |
| 162 | #ifdef CONFIG_IPV6_PRIVACY |
| 163 | __s32 use_tempaddr; |
| 164 | __s32 temp_valid_lft; |
| 165 | __s32 temp_prefered_lft; |
| 166 | __s32 regen_max_retry; |
| 167 | __s32 max_desync_factor; |
| 168 | #endif |
| 169 | __s32 max_addresses; |
YOSHIFUJI Hideaki | 65f5c7c | 2006-03-20 16:55:08 -0800 | [diff] [blame] | 170 | __s32 accept_ra_defrtr; |
YOSHIFUJI Hideaki | c4fd30e | 2006-03-20 16:55:26 -0800 | [diff] [blame] | 171 | __s32 accept_ra_pinfo; |
YOSHIFUJI Hideaki | 930d6ff | 2006-03-20 17:05:30 -0800 | [diff] [blame] | 172 | #ifdef CONFIG_IPV6_ROUTER_PREF |
| 173 | __s32 accept_ra_rtr_pref; |
YOSHIFUJI Hideaki | 52e1635 | 2006-03-20 17:05:47 -0800 | [diff] [blame] | 174 | __s32 rtr_probe_interval; |
YOSHIFUJI Hideaki | 09c884d | 2006-03-20 17:07:03 -0800 | [diff] [blame] | 175 | #ifdef CONFIG_IPV6_ROUTE_INFO |
| 176 | __s32 accept_ra_rt_info_max_plen; |
| 177 | #endif |
YOSHIFUJI Hideaki | 930d6ff | 2006-03-20 17:05:30 -0800 | [diff] [blame] | 178 | #endif |
YOSHIFUJI Hideaki | fbea49e | 2006-09-22 14:43:49 -0700 | [diff] [blame] | 179 | __s32 proxy_ndp; |
YOSHIFUJI Hideaki | 0bcbc92 | 2007-04-24 14:58:30 -0700 | [diff] [blame] | 180 | __s32 accept_source_route; |
Neil Horman | 95c385b | 2007-04-25 17:08:10 -0700 | [diff] [blame] | 181 | #ifdef CONFIG_IPV6_OPTIMISTIC_DAD |
| 182 | __s32 optimistic_dad; |
| 183 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | void *sysctl; |
| 185 | }; |
| 186 | |
| 187 | /* index values for the variables in ipv6_devconf */ |
| 188 | enum { |
| 189 | DEVCONF_FORWARDING = 0, |
| 190 | DEVCONF_HOPLIMIT, |
| 191 | DEVCONF_MTU6, |
| 192 | DEVCONF_ACCEPT_RA, |
| 193 | DEVCONF_ACCEPT_REDIRECTS, |
| 194 | DEVCONF_AUTOCONF, |
| 195 | DEVCONF_DAD_TRANSMITS, |
| 196 | DEVCONF_RTR_SOLICITS, |
| 197 | DEVCONF_RTR_SOLICIT_INTERVAL, |
| 198 | DEVCONF_RTR_SOLICIT_DELAY, |
| 199 | DEVCONF_USE_TEMPADDR, |
| 200 | DEVCONF_TEMP_VALID_LFT, |
| 201 | DEVCONF_TEMP_PREFERED_LFT, |
| 202 | DEVCONF_REGEN_MAX_RETRY, |
| 203 | DEVCONF_MAX_DESYNC_FACTOR, |
| 204 | DEVCONF_MAX_ADDRESSES, |
| 205 | DEVCONF_FORCE_MLD_VERSION, |
YOSHIFUJI Hideaki | 65f5c7c | 2006-03-20 16:55:08 -0800 | [diff] [blame] | 206 | DEVCONF_ACCEPT_RA_DEFRTR, |
YOSHIFUJI Hideaki | c4fd30e | 2006-03-20 16:55:26 -0800 | [diff] [blame] | 207 | DEVCONF_ACCEPT_RA_PINFO, |
YOSHIFUJI Hideaki | 930d6ff | 2006-03-20 17:05:30 -0800 | [diff] [blame] | 208 | DEVCONF_ACCEPT_RA_RTR_PREF, |
YOSHIFUJI Hideaki | 52e1635 | 2006-03-20 17:05:47 -0800 | [diff] [blame] | 209 | DEVCONF_RTR_PROBE_INTERVAL, |
YOSHIFUJI Hideaki | 09c884d | 2006-03-20 17:07:03 -0800 | [diff] [blame] | 210 | DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN, |
YOSHIFUJI Hideaki | fbea49e | 2006-09-22 14:43:49 -0700 | [diff] [blame] | 211 | DEVCONF_PROXY_NDP, |
Neil Horman | 95c385b | 2007-04-25 17:08:10 -0700 | [diff] [blame] | 212 | DEVCONF_OPTIMISTIC_DAD, |
YOSHIFUJI Hideaki | 4540250 | 2007-05-29 13:23:34 -0700 | [diff] [blame] | 213 | DEVCONF_ACCEPT_SOURCE_ROUTE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | DEVCONF_MAX |
| 215 | }; |
| 216 | |
| 217 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | #include <linux/icmpv6.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | #include <linux/tcp.h> |
| 220 | #include <linux/udp.h> |
| 221 | |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 222 | #include <net/if_inet6.h> /* struct ipv6_mc_socklist */ |
| 223 | #include <net/inet_sock.h> |
| 224 | |
Arnaldo Carvalho de Melo | 0660e03 | 2007-04-25 17:54:47 -0700 | [diff] [blame] | 225 | static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb) |
| 226 | { |
| 227 | return (struct ipv6hdr *)skb_network_header(skb); |
| 228 | } |
| 229 | |
Arnaldo Carvalho de Melo | 39b8916 | 2007-04-10 21:06:25 -0700 | [diff] [blame] | 230 | static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb) |
| 231 | { |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 232 | return (struct ipv6hdr *)skb_transport_header(skb); |
Arnaldo Carvalho de Melo | 39b8916 | 2007-04-10 21:06:25 -0700 | [diff] [blame] | 233 | } |
| 234 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | /* |
| 236 | This structure contains results of exthdrs parsing |
| 237 | as offsets from skb->nh. |
| 238 | */ |
| 239 | |
| 240 | struct inet6_skb_parm { |
| 241 | int iif; |
| 242 | __u16 ra; |
| 243 | __u16 hop; |
| 244 | __u16 dst0; |
| 245 | __u16 srcrt; |
| 246 | __u16 dst1; |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 247 | __u16 lastopt; |
Patrick McHardy | 951dbc8 | 2006-01-06 23:02:34 -0800 | [diff] [blame] | 248 | __u32 nhoff; |
Patrick McHardy | 3e3850e | 2006-01-06 23:04:54 -0800 | [diff] [blame] | 249 | __u16 flags; |
Masahide NAKAMURA | 59fbb3a6 | 2007-06-26 23:56:32 -0700 | [diff] [blame^] | 250 | #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) |
David S. Miller | 8dd7368 | 2006-08-23 19:25:55 -0700 | [diff] [blame] | 251 | __u16 dsthao; |
| 252 | #endif |
Patrick McHardy | 3e3850e | 2006-01-06 23:04:54 -0800 | [diff] [blame] | 253 | |
| 254 | #define IP6SKB_XFRM_TRANSFORMED 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | }; |
| 256 | |
| 257 | #define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb)) |
| 258 | |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 259 | static inline int inet6_iif(const struct sk_buff *skb) |
| 260 | { |
| 261 | return IP6CB(skb)->iif; |
| 262 | } |
| 263 | |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 264 | struct inet6_request_sock { |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 265 | struct in6_addr loc_addr; |
| 266 | struct in6_addr rmt_addr; |
| 267 | struct sk_buff *pktopts; |
| 268 | int iif; |
| 269 | }; |
| 270 | |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 271 | struct tcp6_request_sock { |
| 272 | struct tcp_request_sock tcp6rsk_tcp; |
| 273 | struct inet6_request_sock tcp6rsk_inet6; |
| 274 | }; |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 275 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | /** |
| 277 | * struct ipv6_pinfo - ipv6 private area |
| 278 | * |
| 279 | * In the struct sock hierarchy (tcp6_sock, upd6_sock, etc) |
| 280 | * this _must_ be the last member, so that inet6_sk_generic |
| 281 | * is able to calculate its offset from the base struct sock |
| 282 | * by using the struct proto->slab_obj_size member. -acme |
| 283 | */ |
| 284 | struct ipv6_pinfo { |
| 285 | struct in6_addr saddr; |
| 286 | struct in6_addr rcv_saddr; |
| 287 | struct in6_addr daddr; |
| 288 | struct in6_addr *daddr_cache; |
YOSHIFUJI Hideaki | 8e1ef0a | 2006-08-29 17:15:09 -0700 | [diff] [blame] | 289 | #ifdef CONFIG_IPV6_SUBTREES |
| 290 | struct in6_addr *saddr_cache; |
| 291 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
Al Viro | 90bcaf7 | 2006-11-08 00:25:17 -0800 | [diff] [blame] | 293 | __be32 flow_label; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | __u32 frag_size; |
| 295 | __s16 hop_limit; |
| 296 | __s16 mcast_hops; |
| 297 | int mcast_oif; |
| 298 | |
| 299 | /* pktoption flags */ |
| 300 | union { |
| 301 | struct { |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 302 | __u16 srcrt:2, |
| 303 | osrcrt:2, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | rxinfo:1, |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 305 | rxoinfo:1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | rxhlim:1, |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 307 | rxohlim:1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | hopopts:1, |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 309 | ohopopts:1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | dstopts:1, |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 311 | odstopts:1, |
YOSHIFUJI Hideaki | 41a1f8e | 2005-09-08 10:19:03 +0900 | [diff] [blame] | 312 | rxflow:1, |
| 313 | rxtclass:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | } bits; |
YOSHIFUJI Hideaki | 333fad5 | 2005-09-08 09:59:17 +0900 | [diff] [blame] | 315 | __u16 all; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | } rxopt; |
| 317 | |
| 318 | /* sockopt flags */ |
| 319 | __u8 mc_loop:1, |
| 320 | recverr:1, |
| 321 | sndflow:1, |
| 322 | pmtudisc:2, |
| 323 | ipv6only:1; |
YOSHIFUJI Hideaki | 41a1f8e | 2005-09-08 10:19:03 +0900 | [diff] [blame] | 324 | __u8 tclass; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
| 326 | __u32 dst_cookie; |
| 327 | |
| 328 | struct ipv6_mc_socklist *ipv6_mc_list; |
| 329 | struct ipv6_ac_socklist *ipv6_ac_list; |
| 330 | struct ipv6_fl_socklist *ipv6_fl_list; |
| 331 | |
| 332 | struct ipv6_txoptions *opt; |
| 333 | struct sk_buff *pktoptions; |
| 334 | struct { |
| 335 | struct ipv6_txoptions *opt; |
| 336 | struct rt6_info *rt; |
| 337 | int hop_limit; |
YOSHIFUJI Hideaki | 41a1f8e | 2005-09-08 10:19:03 +0900 | [diff] [blame] | 338 | int tclass; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | } cork; |
| 340 | }; |
| 341 | |
| 342 | /* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */ |
| 343 | struct raw6_sock { |
| 344 | /* inet_sock has to be the first member of raw6_sock */ |
| 345 | struct inet_sock inet; |
| 346 | __u32 checksum; /* perform checksum */ |
| 347 | __u32 offset; /* checksum offset */ |
| 348 | struct icmp6_filter filter; |
| 349 | /* ipv6_pinfo has to be the last member of raw6_sock, see inet6_sk_generic */ |
| 350 | struct ipv6_pinfo inet6; |
| 351 | }; |
| 352 | |
| 353 | struct udp6_sock { |
| 354 | struct udp_sock udp; |
| 355 | /* ipv6_pinfo has to be the last member of udp6_sock, see inet6_sk_generic */ |
| 356 | struct ipv6_pinfo inet6; |
| 357 | }; |
| 358 | |
| 359 | struct tcp6_sock { |
| 360 | struct tcp_sock tcp; |
| 361 | /* ipv6_pinfo has to be the last member of tcp6_sock, see inet6_sk_generic */ |
| 362 | struct ipv6_pinfo inet6; |
| 363 | }; |
| 364 | |
Arnaldo Carvalho de Melo | b9750ce | 2005-12-13 23:22:54 -0800 | [diff] [blame] | 365 | extern int inet6_sk_rebuild_header(struct sock *sk); |
| 366 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) |
| 368 | static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk) |
| 369 | { |
| 370 | return inet_sk(__sk)->pinet6; |
| 371 | } |
| 372 | |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 373 | static inline struct inet6_request_sock * |
| 374 | inet6_rsk(const struct request_sock *rsk) |
| 375 | { |
| 376 | return (struct inet6_request_sock *)(((u8 *)rsk) + |
| 377 | inet_rsk(rsk)->inet6_rsk_offset); |
| 378 | } |
| 379 | |
| 380 | static inline u32 inet6_rsk_offset(struct request_sock *rsk) |
| 381 | { |
| 382 | return rsk->rsk_ops->obj_size - sizeof(struct inet6_request_sock); |
| 383 | } |
| 384 | |
| 385 | static inline struct request_sock *inet6_reqsk_alloc(struct request_sock_ops *ops) |
| 386 | { |
| 387 | struct request_sock *req = reqsk_alloc(ops); |
| 388 | |
| 389 | if (req != NULL) |
| 390 | inet_rsk(req)->inet6_rsk_offset = inet6_rsk_offset(req); |
| 391 | |
| 392 | return req; |
| 393 | } |
| 394 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | static inline struct raw6_sock *raw6_sk(const struct sock *sk) |
| 396 | { |
| 397 | return (struct raw6_sock *)sk; |
| 398 | } |
| 399 | |
| 400 | static inline void inet_sk_copy_descendant(struct sock *sk_to, |
| 401 | const struct sock *sk_from) |
| 402 | { |
| 403 | int ancestor_size = sizeof(struct inet_sock); |
| 404 | |
| 405 | if (sk_from->sk_family == PF_INET6) |
| 406 | ancestor_size += sizeof(struct ipv6_pinfo); |
| 407 | |
| 408 | __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size); |
| 409 | } |
| 410 | |
| 411 | #define __ipv6_only_sock(sk) (inet6_sk(sk)->ipv6only) |
| 412 | #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] | 413 | |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 414 | struct inet6_timewait_sock { |
| 415 | struct in6_addr tw_v6_daddr; |
| 416 | struct in6_addr tw_v6_rcv_saddr; |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 417 | }; |
| 418 | |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 419 | struct tcp6_timewait_sock { |
| 420 | struct tcp_timewait_sock tcp6tw_tcp; |
| 421 | struct inet6_timewait_sock tcp6tw_inet6; |
| 422 | }; |
| 423 | |
| 424 | static inline u16 inet6_tw_offset(const struct proto *prot) |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 425 | { |
Arnaldo Carvalho de Melo | 6d6ee43 | 2005-12-13 23:25:19 -0800 | [diff] [blame] | 426 | return prot->twsk_prot->twsk_obj_size - |
| 427 | sizeof(struct inet6_timewait_sock); |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 428 | } |
| 429 | |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 430 | static inline struct inet6_timewait_sock *inet6_twsk(const struct sock *sk) |
| 431 | { |
| 432 | return (struct inet6_timewait_sock *)(((u8 *)sk) + |
| 433 | inet_twsk(sk)->tw_ipv6_offset); |
| 434 | } |
| 435 | |
| 436 | 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] | 437 | { |
| 438 | return likely(sk->sk_state != TCP_TIME_WAIT) ? |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 439 | &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] | 440 | } |
| 441 | |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 442 | 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] | 443 | { |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 444 | 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] | 445 | } |
| 446 | |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 447 | static inline int inet_v6_ipv6only(const struct sock *sk) |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 448 | { |
| 449 | return likely(sk->sk_state != TCP_TIME_WAIT) ? |
Arnaldo Carvalho de Melo | 3f421ba | 2005-08-09 20:11:08 -0700 | [diff] [blame] | 450 | ipv6_only_sock(sk) : inet_twsk(sk)->tw_ipv6only; |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 451 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | #else |
| 453 | #define __ipv6_only_sock(sk) 0 |
| 454 | #define ipv6_only_sock(sk) 0 |
| 455 | |
| 456 | static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk) |
| 457 | { |
| 458 | return NULL; |
| 459 | } |
| 460 | |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 461 | static inline struct inet6_request_sock * |
| 462 | inet6_rsk(const struct request_sock *rsk) |
| 463 | { |
| 464 | return NULL; |
| 465 | } |
| 466 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | static inline struct raw6_sock *raw6_sk(const struct sock *sk) |
| 468 | { |
| 469 | return NULL; |
| 470 | } |
| 471 | |
Arnaldo Carvalho de Melo | 0fa1a53 | 2005-12-13 23:23:09 -0800 | [diff] [blame] | 472 | #define __inet6_rcv_saddr(__sk) NULL |
| 473 | #define inet6_rcv_saddr(__sk) NULL |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 474 | #define tcp_twsk_ipv6only(__sk) 0 |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 475 | #define inet_v6_ipv6only(__sk) 0 |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 476 | #endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | |
Eric Dumazet | 81c3d54 | 2005-10-03 14:13:38 -0700 | [diff] [blame] | 478 | #define INET6_MATCH(__sk, __hash, __saddr, __daddr, __ports, __dif)\ |
| 479 | (((__sk)->sk_hash == (__hash)) && \ |
Al Viro | 4f765d8 | 2006-09-27 18:43:07 -0700 | [diff] [blame] | 480 | ((*((__portpair *)&(inet_sk(__sk)->dport))) == (__ports)) && \ |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 481 | ((__sk)->sk_family == AF_INET6) && \ |
| 482 | ipv6_addr_equal(&inet6_sk(__sk)->daddr, (__saddr)) && \ |
| 483 | ipv6_addr_equal(&inet6_sk(__sk)->rcv_saddr, (__daddr)) && \ |
| 484 | (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 486 | #endif /* __KERNEL__ */ |
| 487 | |
| 488 | #endif /* _IPV6_H */ |