195 lines
3.9 KiB
C
195 lines
3.9 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
||
|
|
#ifndef _IPV6_H
|
||
|
|
#define _IPV6_H
|
||
|
|
|
||
|
|
#include <linux/libc-compat.h>
|
||
|
|
#include <linux/types.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*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if __UAPI_DEF_IN6_PKTINFO
|
||
|
|
struct in6_pktinfo {
|
||
|
|
struct in6_addr ipi6_addr;
|
||
|
|
int ipi6_ifindex;
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __UAPI_DEF_IP6_MTUINFO
|
||
|
|
struct ip6_mtuinfo {
|
||
|
|
struct sockaddr_in6 ip6m_addr;
|
||
|
|
__u32 ip6m_mtu;
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
struct in6_ifreq {
|
||
|
|
struct in6_addr ifr6_addr;
|
||
|
|
__u32 ifr6_prefixlen;
|
||
|
|
int ifr6_ifindex;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define IPV6_SRCRT_STRICT 0x01 /* Deprecated; will be removed */
|
||
|
|
#define IPV6_SRCRT_TYPE_0 0 /* Deprecated; will be removed */
|
||
|
|
#define IPV6_SRCRT_TYPE_2 2 /* IPv6 type 2 Routing Header */
|
||
|
|
#define IPV6_SRCRT_TYPE_4 4 /* Segment Routing with IPv6 */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
} __attribute__((packed)); /* required for some archs */
|
||
|
|
|
||
|
|
#define ipv6_destopt_hdr ipv6_opt_hdr
|
||
|
|
#define ipv6_hopopt_hdr ipv6_opt_hdr
|
||
|
|
|
||
|
|
/* Router Alert option values (RFC2711) */
|
||
|
|
#define IPV6_OPT_ROUTERALERT_MLD 0x0000 /* MLD(RFC2710) */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* routing header type 0 (used in cmsghdr struct)
|
||
|
|
*/
|
||
|
|
|
||
|
|
struct rt0_hdr {
|
||
|
|
struct ipv6_rt_hdr rt_hdr;
|
||
|
|
__u32 reserved;
|
||
|
|
struct in6_addr addr[0];
|
||
|
|
|
||
|
|
#define rt0_type rt_hdr.type
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* routing header type 2
|
||
|
|
*/
|
||
|
|
|
||
|
|
struct rt2_hdr {
|
||
|
|
struct ipv6_rt_hdr rt_hdr;
|
||
|
|
__u32 reserved;
|
||
|
|
struct in6_addr addr;
|
||
|
|
|
||
|
|
#define rt2_type rt_hdr.type
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* home address option in destination options header
|
||
|
|
*/
|
||
|
|
|
||
|
|
struct ipv6_destopt_hao {
|
||
|
|
__u8 type;
|
||
|
|
__u8 length;
|
||
|
|
struct in6_addr addr;
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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];
|
||
|
|
|
||
|
|
__be16 payload_len;
|
||
|
|
__u8 nexthdr;
|
||
|
|
__u8 hop_limit;
|
||
|
|
|
||
|
|
struct in6_addr saddr;
|
||
|
|
struct in6_addr daddr;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* index values for the variables in ipv6_devconf */
|
||
|
|
enum {
|
||
|
|
DEVCONF_FORWARDING = 0,
|
||
|
|
DEVCONF_HOPLIMIT,
|
||
|
|
DEVCONF_MTU6,
|
||
|
|
DEVCONF_ACCEPT_RA,
|
||
|
|
DEVCONF_ACCEPT_REDIRECTS,
|
||
|
|
DEVCONF_AUTOCONF,
|
||
|
|
DEVCONF_DAD_TRANSMITS,
|
||
|
|
DEVCONF_RTR_SOLICITS,
|
||
|
|
DEVCONF_RTR_SOLICIT_INTERVAL,
|
||
|
|
DEVCONF_RTR_SOLICIT_DELAY,
|
||
|
|
DEVCONF_USE_TEMPADDR,
|
||
|
|
DEVCONF_TEMP_VALID_LFT,
|
||
|
|
DEVCONF_TEMP_PREFERED_LFT,
|
||
|
|
DEVCONF_REGEN_MAX_RETRY,
|
||
|
|
DEVCONF_MAX_DESYNC_FACTOR,
|
||
|
|
DEVCONF_MAX_ADDRESSES,
|
||
|
|
DEVCONF_FORCE_MLD_VERSION,
|
||
|
|
DEVCONF_ACCEPT_RA_DEFRTR,
|
||
|
|
DEVCONF_ACCEPT_RA_PINFO,
|
||
|
|
DEVCONF_ACCEPT_RA_RTR_PREF,
|
||
|
|
DEVCONF_RTR_PROBE_INTERVAL,
|
||
|
|
DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,
|
||
|
|
DEVCONF_PROXY_NDP,
|
||
|
|
DEVCONF_OPTIMISTIC_DAD,
|
||
|
|
DEVCONF_ACCEPT_SOURCE_ROUTE,
|
||
|
|
DEVCONF_MC_FORWARDING,
|
||
|
|
DEVCONF_DISABLE_IPV6,
|
||
|
|
DEVCONF_ACCEPT_DAD,
|
||
|
|
DEVCONF_FORCE_TLLAO,
|
||
|
|
DEVCONF_NDISC_NOTIFY,
|
||
|
|
DEVCONF_MLDV1_UNSOLICITED_REPORT_INTERVAL,
|
||
|
|
DEVCONF_MLDV2_UNSOLICITED_REPORT_INTERVAL,
|
||
|
|
DEVCONF_SUPPRESS_FRAG_NDISC,
|
||
|
|
DEVCONF_ACCEPT_RA_FROM_LOCAL,
|
||
|
|
DEVCONF_USE_OPTIMISTIC,
|
||
|
|
DEVCONF_ACCEPT_RA_MTU,
|
||
|
|
DEVCONF_STABLE_SECRET,
|
||
|
|
DEVCONF_USE_OIF_ADDRS_ONLY,
|
||
|
|
DEVCONF_ACCEPT_RA_MIN_HOP_LIMIT,
|
||
|
|
DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN,
|
||
|
|
DEVCONF_DROP_UNICAST_IN_L2_MULTICAST,
|
||
|
|
DEVCONF_DROP_UNSOLICITED_NA,
|
||
|
|
DEVCONF_KEEP_ADDR_ON_DOWN,
|
||
|
|
DEVCONF_RTR_SOLICIT_MAX_INTERVAL,
|
||
|
|
DEVCONF_SEG6_ENABLED,
|
||
|
|
DEVCONF_SEG6_REQUIRE_HMAC,
|
||
|
|
DEVCONF_ENHANCED_DAD,
|
||
|
|
DEVCONF_ADDR_GEN_MODE,
|
||
|
|
DEVCONF_DISABLE_POLICY,
|
||
|
|
DEVCONF_ACCEPT_RA_RT_INFO_MIN_PLEN,
|
||
|
|
DEVCONF_NDISC_TCLASS,
|
||
|
|
DEVCONF_MAX
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* _IPV6_H */
|