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#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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