diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/ipv6.h | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h new file mode 100644 index 0000000..7060377 --- /dev/null +++ b/include/linux/ipv6.h @@ -0,0 +1,197 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _UAPI_IPV6_H +#define _UAPI_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_3 3 /* RPL Segment Routing with IPv6 */ +#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_RPL_SEG_ENABLED, + DEVCONF_RA_DEFRTR_METRIC, + DEVCONF_MAX +}; + + +#endif /* _UAPI_IPV6_H */ |