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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 | #ifndef _IPV6_H
#define _IPV6_H
#include <linux/in6.h>
#include <asm/byteorder.h>
/* The latest drafts declared increase in minimal mtu up to 1280. */
#define IPV6_MIN_MTU 1280
/*
* Advanced API
* source interface/address selection, source routing, etc...
* *under construction*
*/
struct in6_pktinfo {
struct in6_addr ipi6_addr;
int ipi6_ifindex;
};
struct in6_ifreq {
struct in6_addr ifr6_addr;
__u32 ifr6_prefixlen;
int ifr6_ifindex;
};
#define IPV6_SRCRT_STRICT 0x01 /* this hop must be a neighbor */
#define IPV6_SRCRT_TYPE_0 0 /* IPv6 type 0 Routing Header */
/*
* routing header
*/
struct ipv6_rt_hdr {
__u8 nexthdr;
__u8 hdrlen;
__u8 type;
__u8 segments_left;
/*
* type specific data
* variable length field
*/
};
struct ipv6_opt_hdr {
__u8 nexthdr;
__u8 hdrlen;
/*
* TLV encoded option data follows.
*/
};
#define ipv6_destopt_hdr ipv6_opt_hdr
#define ipv6_hopopt_hdr ipv6_opt_hdr
#ifdef __KERNEL__
#define ipv6_optlen(p) (((p)->hdrlen+1) << 3)
#endif
/*
* routing header type 0 (used in cmsghdr struct)
*/
struct rt0_hdr {
struct ipv6_rt_hdr rt_hdr;
__u32 bitmap; /* strict/loose bit map */
struct in6_addr addr[0];
#define rt0_type rt_hdr.type;
};
/*
* IPv6 fixed header
*
* BEWARE, it is incorrect. The first 4 bits of flow_lbl
* are glued to priority now, forming "class".
*/
struct ipv6hdr {
#if defined(__LITTLE_ENDIAN_BITFIELD)
__u8 priority:4,
version:4;
#elif defined(__BIG_ENDIAN_BITFIELD)
__u8 version:4,
priority:4;
#else
#error "Please fix <asm/byteorder.h>"
#endif
__u8 flow_lbl[3];
__u16 payload_len;
__u8 nexthdr;
__u8 hop_limit;
struct in6_addr saddr;
struct in6_addr daddr;
};
#ifdef __KERNEL__
#include <linux/in6.h> /* struct sockaddr_in6 */
#include <linux/icmpv6.h>
#include <net/if_inet6.h> /* struct ipv6_mc_socklist */
#include <linux/tcp.h>
/*
This structure contains results of exthdrs parsing
as offsets from skb->nh.
*/
struct inet6_skb_parm
{
int iif;
__u16 ra;
__u16 hop;
__u16 auth;
__u16 dst0;
__u16 srcrt;
__u16 dst1;
};
struct ipv6_pinfo {
struct in6_addr saddr;
struct in6_addr rcv_saddr;
struct in6_addr daddr;
struct in6_addr *daddr_cache;
__u32 flow_label;
__u32 frag_size;
int hop_limit;
int mcast_hops;
int mcast_oif;
/* pktoption flags */
union {
struct {
__u8 srcrt:2,
rxinfo:1,
rxhlim:1,
hopopts:1,
dstopts:1,
authhdr:1,
rxflow:1;
} bits;
__u8 all;
} rxopt;
/* sockopt flags */
__u8 mc_loop:1,
recverr:1,
sndflow:1,
pmtudisc:2;
struct ipv6_mc_socklist *ipv6_mc_list;
struct ipv6_fl_socklist *ipv6_fl_list;
__u32 dst_cookie;
struct ipv6_txoptions *opt;
struct sk_buff *pktoptions;
};
struct raw6_opt {
__u32 checksum; /* perform checksum */
__u32 offset; /* checksum offset */
struct icmp6_filter filter;
};
/* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */
struct raw6_sock {
struct sock sk;
struct ipv6_pinfo *pinet6;
struct inet_opt inet;
struct raw6_opt raw6;
struct ipv6_pinfo inet6;
};
struct udp6_sock {
struct sock sk;
struct ipv6_pinfo *pinet6;
struct inet_opt inet;
struct ipv6_pinfo inet6;
};
struct tcp6_sock {
struct sock sk;
struct ipv6_pinfo *pinet6;
struct inet_opt inet;
struct tcp_opt tcp;
struct ipv6_pinfo inet6;
};
#define inet6_sk(__sk) ((struct raw6_sock *)__sk)->pinet6
#define raw6_sk(__sk) (&((struct raw6_sock *)__sk)->raw6)
#endif
#endif
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