| 1 | #ifndef _IPV6_H |
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| 2 | #define _IPV6_H |
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| 3 | |
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| 4 | #include <asm/types.h> |
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| 5 | #include <linux/in6.h> |
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| 6 | #include <endian.h> |
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| 7 | #include <byteswap.h> |
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| 8 | |
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| 9 | /* The latest drafts declared increase in minimal mtu up to 1280. */ |
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| 10 | |
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| 11 | #define IPV6_MIN_MTU 1280 |
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| 12 | |
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| 13 | /* |
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| 14 | * Advanced API |
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| 15 | * source interface/address selection, source routing, etc... |
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| 16 | * *under construction* |
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| 17 | */ |
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| 18 | |
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| 19 | #ifndef _NETINET_IN_H |
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| 20 | |
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| 21 | struct in6_pktinfo { |
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| 22 | struct in6_addr ipi6_addr; |
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| 23 | int ipi6_ifindex; |
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| 24 | }; |
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| 25 | |
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| 26 | #endif |
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| 27 | |
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| 28 | struct in6_ifreq { |
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| 29 | struct in6_addr ifr6_addr; |
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| 30 | __u32 ifr6_prefixlen; |
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| 31 | int ifr6_ifindex; |
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| 32 | }; |
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| 33 | |
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| 34 | #define IPV6_SRCRT_STRICT 0x01 /* this hop must be a neighbor */ |
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| 35 | #define IPV6_SRCRT_TYPE_0 0 /* IPv6 type 0 Routing Header */ |
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| 36 | |
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| 37 | /* |
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| 38 | * routing header |
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| 39 | */ |
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| 40 | struct ipv6_rt_hdr { |
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| 41 | __u8 nexthdr; |
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| 42 | __u8 hdrlen; |
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| 43 | __u8 type; |
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| 44 | __u8 segments_left; |
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| 45 | |
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| 46 | /* |
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| 47 | * type specific data |
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| 48 | * variable length field |
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| 49 | */ |
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| 50 | }; |
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| 51 | |
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| 52 | |
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| 53 | struct ipv6_opt_hdr { |
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| 54 | __u8 nexthdr; |
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| 55 | __u8 hdrlen; |
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| 56 | /* |
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| 57 | * TLV encoded option data follows. |
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| 58 | */ |
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| 59 | }; |
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| 60 | |
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| 61 | #define ipv6_destopt_hdr ipv6_opt_hdr |
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| 62 | #define ipv6_hopopt_hdr ipv6_opt_hdr |
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| 63 | |
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| 64 | /* |
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| 65 | * routing header type 0 (used in cmsghdr struct) |
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| 66 | */ |
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| 67 | |
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| 68 | struct rt0_hdr { |
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| 69 | struct ipv6_rt_hdr rt_hdr; |
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| 70 | __u32 bitmap; /* strict/loose bit map */ |
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| 71 | struct in6_addr addr[0]; |
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| 72 | |
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| 73 | #define rt0_type rt_hdr.type |
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| 74 | }; |
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| 75 | |
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| 76 | struct ipv6_auth_hdr { |
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| 77 | __u8 nexthdr; |
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| 78 | __u8 hdrlen; /* This one is measured in 32 bit units! */ |
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| 79 | __u16 reserved; |
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| 80 | __u32 spi; |
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| 81 | __u32 seq_no; /* Sequence number */ |
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| 82 | __u8 auth_data[0]; /* Length variable but >=4. Mind the 64 bit alignment! */ |
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| 83 | }; |
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| 84 | |
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| 85 | struct ipv6_esp_hdr { |
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| 86 | __u32 spi; |
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| 87 | __u32 seq_no; /* Sequence number */ |
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| 88 | __u8 enc_data[0]; /* Length variable but >=8. Mind the 64 bit alignment! */ |
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| 89 | }; |
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| 90 | |
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| 91 | struct ipv6_comp_hdr { |
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| 92 | __u8 nexthdr; |
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| 93 | __u8 flags; |
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| 94 | __u16 cpi; |
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| 95 | }; |
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| 96 | |
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| 97 | /* |
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| 98 | * IPv6 fixed header |
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| 99 | * |
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| 100 | * BEWARE, it is incorrect. The first 4 bits of flow_lbl |
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| 101 | * are glued to priority now, forming "class". |
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| 102 | */ |
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| 103 | |
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| 104 | struct ipv6hdr { |
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| 105 | #if defined(__LITTLE_ENDIAN) |
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| 106 | __u8 priority:4, |
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| 107 | version:4; |
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| 108 | #elif defined(__BIG_ENDIAN) |
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| 109 | __u8 version:4, |
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| 110 | priority:4; |
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| 111 | #else |
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| 112 | #error "Endian problem - this didn't happen" |
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| 113 | #endif |
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| 114 | __u8 flow_lbl[3]; |
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| 115 | |
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| 116 | __u16 payload_len; |
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| 117 | __u8 nexthdr; |
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| 118 | __u8 hop_limit; |
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| 119 | |
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| 120 | struct in6_addr saddr; |
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| 121 | struct in6_addr daddr; |
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| 122 | }; |
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| 123 | |
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| 124 | /* |
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| 125 | * This structure contains configuration options per IPv6 link. |
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| 126 | */ |
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| 127 | struct ipv6_devconf { |
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| 128 | __s32 forwarding; |
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| 129 | __s32 hop_limit; |
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| 130 | __s32 mtu6; |
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| 131 | __s32 accept_ra; |
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| 132 | __s32 accept_redirects; |
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| 133 | __s32 autoconf; |
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| 134 | __s32 dad_transmits; |
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| 135 | __s32 rtr_solicits; |
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| 136 | __s32 rtr_solicit_interval; |
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| 137 | __s32 rtr_solicit_delay; |
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| 138 | __s32 force_mld_version; |
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| 139 | #ifdef CONFIG_IPV6_PRIVACY |
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| 140 | __s32 use_tempaddr; |
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| 141 | __s32 temp_valid_lft; |
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| 142 | __s32 temp_prefered_lft; |
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| 143 | __s32 regen_max_retry; |
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| 144 | __s32 max_desync_factor; |
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| 145 | #endif |
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| 146 | __s32 max_addresses; |
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| 147 | void *sysctl; |
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| 148 | }; |
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| 149 | |
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| 150 | /* index values for the variables in ipv6_devconf */ |
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| 151 | enum { |
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| 152 | DEVCONF_FORWARDING = 0, |
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| 153 | DEVCONF_HOPLIMIT, |
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| 154 | DEVCONF_MTU6, |
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| 155 | DEVCONF_ACCEPT_RA, |
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| 156 | DEVCONF_ACCEPT_REDIRECTS, |
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| 157 | DEVCONF_AUTOCONF, |
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| 158 | DEVCONF_DAD_TRANSMITS, |
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| 159 | DEVCONF_RTR_SOLICITS, |
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| 160 | DEVCONF_RTR_SOLICIT_INTERVAL, |
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| 161 | DEVCONF_RTR_SOLICIT_DELAY, |
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| 162 | DEVCONF_USE_TEMPADDR, |
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| 163 | DEVCONF_TEMP_VALID_LFT, |
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| 164 | DEVCONF_TEMP_PREFERED_LFT, |
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| 165 | DEVCONF_REGEN_MAX_RETRY, |
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| 166 | DEVCONF_MAX_DESYNC_FACTOR, |
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| 167 | DEVCONF_MAX_ADDRESSES, |
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| 168 | DEVCONF_FORCE_MLD_VERSION, |
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| 169 | DEVCONF_MAX |
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| 170 | }; |
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| 171 | |
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| 172 | #endif |
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