--- /dev/null
+Fix libc kernel headers conflict
+
+Add missing kernel headers to fix conflicts with toolchain provided kernel
+headers of older versions.
+
+This patch is equivalent to upstream commit 6c7f4215003 ("build: distribute
+in.h in6.h libc-compat.h"). These files are present in upstream git repo, but
+are missing from the distributed tarball.
+
+Signed-off-by: Baruch Siach <baruch@tkos.co.il>
+---
+
+--- /dev/null
++++ b/include/linux-private/linux/in.h
+@@ -0,0 +1,299 @@
++/*
++ * INET An implementation of the TCP/IP protocol suite for the LINUX
++ * operating system. INET is implemented using the BSD Socket
++ * interface as the means of communication with the user level.
++ *
++ * Definitions of the Internet Protocol.
++ *
++ * Version: @(#)in.h 1.0.1 04/21/93
++ *
++ * Authors: Original taken from the GNU Project <netinet/in.h> file.
++ * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++#ifndef _LINUX_IN_H
++#define _LINUX_IN_H
++
++#include <linux/types.h>
++#include <linux/libc-compat.h>
++#include <linux/socket.h>
++
++#if __UAPI_DEF_IN_IPPROTO
++/* Standard well-defined IP protocols. */
++enum {
++ IPPROTO_IP = 0, /* Dummy protocol for TCP */
++#define IPPROTO_IP IPPROTO_IP
++ IPPROTO_ICMP = 1, /* Internet Control Message Protocol */
++#define IPPROTO_ICMP IPPROTO_ICMP
++ IPPROTO_IGMP = 2, /* Internet Group Management Protocol */
++#define IPPROTO_IGMP IPPROTO_IGMP
++ IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */
++#define IPPROTO_IPIP IPPROTO_IPIP
++ IPPROTO_TCP = 6, /* Transmission Control Protocol */
++#define IPPROTO_TCP IPPROTO_TCP
++ IPPROTO_EGP = 8, /* Exterior Gateway Protocol */
++#define IPPROTO_EGP IPPROTO_EGP
++ IPPROTO_PUP = 12, /* PUP protocol */
++#define IPPROTO_PUP IPPROTO_PUP
++ IPPROTO_UDP = 17, /* User Datagram Protocol */
++#define IPPROTO_UDP IPPROTO_UDP
++ IPPROTO_IDP = 22, /* XNS IDP protocol */
++#define IPPROTO_IDP IPPROTO_IDP
++ IPPROTO_TP = 29, /* SO Transport Protocol Class 4 */
++#define IPPROTO_TP IPPROTO_TP
++ IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol */
++#define IPPROTO_DCCP IPPROTO_DCCP
++ IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling */
++#define IPPROTO_IPV6 IPPROTO_IPV6
++ IPPROTO_RSVP = 46, /* RSVP Protocol */
++#define IPPROTO_RSVP IPPROTO_RSVP
++ IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */
++#define IPPROTO_GRE IPPROTO_GRE
++ IPPROTO_ESP = 50, /* Encapsulation Security Payload protocol */
++#define IPPROTO_ESP IPPROTO_ESP
++ IPPROTO_AH = 51, /* Authentication Header protocol */
++#define IPPROTO_AH IPPROTO_AH
++ IPPROTO_MTP = 92, /* Multicast Transport Protocol */
++#define IPPROTO_MTP IPPROTO_MTP
++ IPPROTO_BEETPH = 94, /* IP option pseudo header for BEET */
++#define IPPROTO_BEETPH IPPROTO_BEETPH
++ IPPROTO_ENCAP = 98, /* Encapsulation Header */
++#define IPPROTO_ENCAP IPPROTO_ENCAP
++ IPPROTO_PIM = 103, /* Protocol Independent Multicast */
++#define IPPROTO_PIM IPPROTO_PIM
++ IPPROTO_COMP = 108, /* Compression Header Protocol */
++#define IPPROTO_COMP IPPROTO_COMP
++ IPPROTO_SCTP = 132, /* Stream Control Transport Protocol */
++#define IPPROTO_SCTP IPPROTO_SCTP
++ IPPROTO_UDPLITE = 136, /* UDP-Lite (RFC 3828) */
++#define IPPROTO_UDPLITE IPPROTO_UDPLITE
++ IPPROTO_MPLS = 137, /* MPLS in IP (RFC 4023) */
++#define IPPROTO_MPLS IPPROTO_MPLS
++ IPPROTO_RAW = 255, /* Raw IP packets */
++#define IPPROTO_RAW IPPROTO_RAW
++ IPPROTO_MAX
++};
++#endif
++
++#if __UAPI_DEF_IN_ADDR
++/* Internet address. */
++struct in_addr {
++ __be32 s_addr;
++};
++#endif
++
++#define IP_TOS 1
++#define IP_TTL 2
++#define IP_HDRINCL 3
++#define IP_OPTIONS 4
++#define IP_ROUTER_ALERT 5
++#define IP_RECVOPTS 6
++#define IP_RETOPTS 7
++#define IP_PKTINFO 8
++#define IP_PKTOPTIONS 9
++#define IP_MTU_DISCOVER 10
++#define IP_RECVERR 11
++#define IP_RECVTTL 12
++#define IP_RECVTOS 13
++#define IP_MTU 14
++#define IP_FREEBIND 15
++#define IP_IPSEC_POLICY 16
++#define IP_XFRM_POLICY 17
++#define IP_PASSSEC 18
++#define IP_TRANSPARENT 19
++
++/* BSD compatibility */
++#define IP_RECVRETOPTS IP_RETOPTS
++
++/* TProxy original addresses */
++#define IP_ORIGDSTADDR 20
++#define IP_RECVORIGDSTADDR IP_ORIGDSTADDR
++
++#define IP_MINTTL 21
++#define IP_NODEFRAG 22
++#define IP_CHECKSUM 23
++#define IP_BIND_ADDRESS_NO_PORT 24
++
++/* IP_MTU_DISCOVER values */
++#define IP_PMTUDISC_DONT 0 /* Never send DF frames */
++#define IP_PMTUDISC_WANT 1 /* Use per route hints */
++#define IP_PMTUDISC_DO 2 /* Always DF */
++#define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu */
++/* Always use interface mtu (ignores dst pmtu) but don't set DF flag.
++ * Also incoming ICMP frag_needed notifications will be ignored on
++ * this socket to prevent accepting spoofed ones.
++ */
++#define IP_PMTUDISC_INTERFACE 4
++/* weaker version of IP_PMTUDISC_INTERFACE, which allos packets to get
++ * fragmented if they exeed the interface mtu
++ */
++#define IP_PMTUDISC_OMIT 5
++
++#define IP_MULTICAST_IF 32
++#define IP_MULTICAST_TTL 33
++#define IP_MULTICAST_LOOP 34
++#define IP_ADD_MEMBERSHIP 35
++#define IP_DROP_MEMBERSHIP 36
++#define IP_UNBLOCK_SOURCE 37
++#define IP_BLOCK_SOURCE 38
++#define IP_ADD_SOURCE_MEMBERSHIP 39
++#define IP_DROP_SOURCE_MEMBERSHIP 40
++#define IP_MSFILTER 41
++#define MCAST_JOIN_GROUP 42
++#define MCAST_BLOCK_SOURCE 43
++#define MCAST_UNBLOCK_SOURCE 44
++#define MCAST_LEAVE_GROUP 45
++#define MCAST_JOIN_SOURCE_GROUP 46
++#define MCAST_LEAVE_SOURCE_GROUP 47
++#define MCAST_MSFILTER 48
++#define IP_MULTICAST_ALL 49
++#define IP_UNICAST_IF 50
++
++#define MCAST_EXCLUDE 0
++#define MCAST_INCLUDE 1
++
++/* These need to appear somewhere around here */
++#define IP_DEFAULT_MULTICAST_TTL 1
++#define IP_DEFAULT_MULTICAST_LOOP 1
++
++/* Request struct for multicast socket ops */
++
++#if __UAPI_DEF_IP_MREQ
++struct ip_mreq {
++ struct in_addr imr_multiaddr; /* IP multicast address of group */
++ struct in_addr imr_interface; /* local IP address of interface */
++};
++
++struct ip_mreqn {
++ struct in_addr imr_multiaddr; /* IP multicast address of group */
++ struct in_addr imr_address; /* local IP address of interface */
++ int imr_ifindex; /* Interface index */
++};
++
++struct ip_mreq_source {
++ __be32 imr_multiaddr;
++ __be32 imr_interface;
++ __be32 imr_sourceaddr;
++};
++
++struct ip_msfilter {
++ __be32 imsf_multiaddr;
++ __be32 imsf_interface;
++ __u32 imsf_fmode;
++ __u32 imsf_numsrc;
++ __be32 imsf_slist[1];
++};
++
++#define IP_MSFILTER_SIZE(numsrc) \
++ (sizeof(struct ip_msfilter) - sizeof(__u32) \
++ + (numsrc) * sizeof(__u32))
++
++struct group_req {
++ __u32 gr_interface; /* interface index */
++ struct __kernel_sockaddr_storage gr_group; /* group address */
++};
++
++struct group_source_req {
++ __u32 gsr_interface; /* interface index */
++ struct __kernel_sockaddr_storage gsr_group; /* group address */
++ struct __kernel_sockaddr_storage gsr_source; /* source address */
++};
++
++struct group_filter {
++ __u32 gf_interface; /* interface index */
++ struct __kernel_sockaddr_storage gf_group; /* multicast address */
++ __u32 gf_fmode; /* filter mode */
++ __u32 gf_numsrc; /* number of sources */
++ struct __kernel_sockaddr_storage gf_slist[1]; /* interface index */
++};
++
++#define GROUP_FILTER_SIZE(numsrc) \
++ (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \
++ + (numsrc) * sizeof(struct __kernel_sockaddr_storage))
++#endif
++
++#if __UAPI_DEF_IN_PKTINFO
++struct in_pktinfo {
++ int ipi_ifindex;
++ struct in_addr ipi_spec_dst;
++ struct in_addr ipi_addr;
++};
++#endif
++
++/* Structure describing an Internet (IP) socket address. */
++#if __UAPI_DEF_SOCKADDR_IN
++#define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */
++struct sockaddr_in {
++ __kernel_sa_family_t sin_family; /* Address family */
++ __be16 sin_port; /* Port number */
++ struct in_addr sin_addr; /* Internet address */
++
++ /* Pad to size of `struct sockaddr'. */
++ unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) -
++ sizeof(unsigned short int) - sizeof(struct in_addr)];
++};
++#define sin_zero __pad /* for BSD UNIX comp. -FvK */
++#endif
++
++#if __UAPI_DEF_IN_CLASS
++/*
++ * Definitions of the bits in an Internet address integer.
++ * On subnets, host and network parts are found according
++ * to the subnet mask, not these masks.
++ */
++#define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0)
++#define IN_CLASSA_NET 0xff000000
++#define IN_CLASSA_NSHIFT 24
++#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
++#define IN_CLASSA_MAX 128
++
++#define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000)
++#define IN_CLASSB_NET 0xffff0000
++#define IN_CLASSB_NSHIFT 16
++#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
++#define IN_CLASSB_MAX 65536
++
++#define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000)
++#define IN_CLASSC_NET 0xffffff00
++#define IN_CLASSC_NSHIFT 8
++#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
++
++#define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000)
++#define IN_MULTICAST(a) IN_CLASSD(a)
++#define IN_MULTICAST_NET 0xF0000000
++
++#define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000)
++#define IN_BADCLASS(a) IN_EXPERIMENTAL((a))
++
++/* Address to accept any incoming messages. */
++#define INADDR_ANY ((unsigned long int) 0x00000000)
++
++/* Address to send to all hosts. */
++#define INADDR_BROADCAST ((unsigned long int) 0xffffffff)
++
++/* Address indicating an error return. */
++#define INADDR_NONE ((unsigned long int) 0xffffffff)
++
++/* Network number for local host loopback. */
++#define IN_LOOPBACKNET 127
++
++/* Address to loopback in software to local host. */
++#define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */
++#define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000)
++
++/* Defines for Multicast INADDR */
++#define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */
++#define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */
++#define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */
++#define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */
++#endif
++
++/* <asm/byteorder.h> contains the htonl type stuff.. */
++#include <asm/byteorder.h>
++
++
++#endif /* _LINUX_IN_H */
+--- /dev/null
++++ b/include/linux-private/linux/in6.h
+@@ -0,0 +1,293 @@
++/*
++ * Types and definitions for AF_INET6
++ * Linux INET6 implementation
++ *
++ * Authors:
++ * Pedro Roque <roque@di.fc.ul.pt>
++ *
++ * Sources:
++ * IPv6 Program Interfaces for BSD Systems
++ * <draft-ietf-ipngwg-bsd-api-05.txt>
++ *
++ * Advanced Sockets API for IPv6
++ * <draft-stevens-advanced-api-00.txt>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++
++#ifndef _LINUX_IN6_H
++#define _LINUX_IN6_H
++
++#include <linux/types.h>
++#include <linux/libc-compat.h>
++
++/*
++ * IPv6 address structure
++ */
++
++#if __UAPI_DEF_IN6_ADDR
++struct in6_addr {
++ union {
++ __u8 u6_addr8[16];
++#if __UAPI_DEF_IN6_ADDR_ALT
++ __be16 u6_addr16[8];
++ __be32 u6_addr32[4];
++#endif
++ } in6_u;
++#define s6_addr in6_u.u6_addr8
++#if __UAPI_DEF_IN6_ADDR_ALT
++#define s6_addr16 in6_u.u6_addr16
++#define s6_addr32 in6_u.u6_addr32
++#endif
++};
++#endif /* __UAPI_DEF_IN6_ADDR */
++
++#if __UAPI_DEF_SOCKADDR_IN6
++struct sockaddr_in6 {
++ unsigned short int sin6_family; /* AF_INET6 */
++ __be16 sin6_port; /* Transport layer port # */
++ __be32 sin6_flowinfo; /* IPv6 flow information */
++ struct in6_addr sin6_addr; /* IPv6 address */
++ __u32 sin6_scope_id; /* scope id (new in RFC2553) */
++};
++#endif /* __UAPI_DEF_SOCKADDR_IN6 */
++
++#if __UAPI_DEF_IPV6_MREQ
++struct ipv6_mreq {
++ /* IPv6 multicast address of group */
++ struct in6_addr ipv6mr_multiaddr;
++
++ /* local IPv6 address of interface */
++ int ipv6mr_ifindex;
++};
++#endif /* __UAPI_DEF_IVP6_MREQ */
++
++#define ipv6mr_acaddr ipv6mr_multiaddr
++
++struct in6_flowlabel_req {
++ struct in6_addr flr_dst;
++ __be32 flr_label;
++ __u8 flr_action;
++ __u8 flr_share;
++ __u16 flr_flags;
++ __u16 flr_expires;
++ __u16 flr_linger;
++ __u32 __flr_pad;
++ /* Options in format of IPV6_PKTOPTIONS */
++};
++
++#define IPV6_FL_A_GET 0
++#define IPV6_FL_A_PUT 1
++#define IPV6_FL_A_RENEW 2
++
++#define IPV6_FL_F_CREATE 1
++#define IPV6_FL_F_EXCL 2
++#define IPV6_FL_F_REFLECT 4
++#define IPV6_FL_F_REMOTE 8
++
++#define IPV6_FL_S_NONE 0
++#define IPV6_FL_S_EXCL 1
++#define IPV6_FL_S_PROCESS 2
++#define IPV6_FL_S_USER 3
++#define IPV6_FL_S_ANY 255
++
++
++/*
++ * Bitmask constant declarations to help applications select out the
++ * flow label and priority fields.
++ *
++ * Note that this are in host byte order while the flowinfo field of
++ * sockaddr_in6 is in network byte order.
++ */
++
++#define IPV6_FLOWINFO_FLOWLABEL 0x000fffff
++#define IPV6_FLOWINFO_PRIORITY 0x0ff00000
++
++/* These definitions are obsolete */
++#define IPV6_PRIORITY_UNCHARACTERIZED 0x0000
++#define IPV6_PRIORITY_FILLER 0x0100
++#define IPV6_PRIORITY_UNATTENDED 0x0200
++#define IPV6_PRIORITY_RESERVED1 0x0300
++#define IPV6_PRIORITY_BULK 0x0400
++#define IPV6_PRIORITY_RESERVED2 0x0500
++#define IPV6_PRIORITY_INTERACTIVE 0x0600
++#define IPV6_PRIORITY_CONTROL 0x0700
++#define IPV6_PRIORITY_8 0x0800
++#define IPV6_PRIORITY_9 0x0900
++#define IPV6_PRIORITY_10 0x0a00
++#define IPV6_PRIORITY_11 0x0b00
++#define IPV6_PRIORITY_12 0x0c00
++#define IPV6_PRIORITY_13 0x0d00
++#define IPV6_PRIORITY_14 0x0e00
++#define IPV6_PRIORITY_15 0x0f00
++
++/*
++ * IPV6 extension headers
++ */
++#if __UAPI_DEF_IPPROTO_V6
++#define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */
++#define IPPROTO_ROUTING 43 /* IPv6 routing header */
++#define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */
++#define IPPROTO_ICMPV6 58 /* ICMPv6 */
++#define IPPROTO_NONE 59 /* IPv6 no next header */
++#define IPPROTO_DSTOPTS 60 /* IPv6 destination options */
++#define IPPROTO_MH 135 /* IPv6 mobility header */
++#endif /* __UAPI_DEF_IPPROTO_V6 */
++
++/*
++ * IPv6 TLV options.
++ */
++#define IPV6_TLV_PAD1 0
++#define IPV6_TLV_PADN 1
++#define IPV6_TLV_ROUTERALERT 5
++#define IPV6_TLV_JUMBO 194
++#define IPV6_TLV_HAO 201 /* home address option */
++
++/*
++ * IPV6 socket options
++ */
++#if __UAPI_DEF_IPV6_OPTIONS
++#define IPV6_ADDRFORM 1
++#define IPV6_2292PKTINFO 2
++#define IPV6_2292HOPOPTS 3
++#define IPV6_2292DSTOPTS 4
++#define IPV6_2292RTHDR 5
++#define IPV6_2292PKTOPTIONS 6
++#define IPV6_CHECKSUM 7
++#define IPV6_2292HOPLIMIT 8
++#define IPV6_NEXTHOP 9
++#define IPV6_AUTHHDR 10 /* obsolete */
++#define IPV6_FLOWINFO 11
++
++#define IPV6_UNICAST_HOPS 16
++#define IPV6_MULTICAST_IF 17
++#define IPV6_MULTICAST_HOPS 18
++#define IPV6_MULTICAST_LOOP 19
++#define IPV6_ADD_MEMBERSHIP 20
++#define IPV6_DROP_MEMBERSHIP 21
++#define IPV6_ROUTER_ALERT 22
++#define IPV6_MTU_DISCOVER 23
++#define IPV6_MTU 24
++#define IPV6_RECVERR 25
++#define IPV6_V6ONLY 26
++#define IPV6_JOIN_ANYCAST 27
++#define IPV6_LEAVE_ANYCAST 28
++
++/* IPV6_MTU_DISCOVER values */
++#define IPV6_PMTUDISC_DONT 0
++#define IPV6_PMTUDISC_WANT 1
++#define IPV6_PMTUDISC_DO 2
++#define IPV6_PMTUDISC_PROBE 3
++/* same as IPV6_PMTUDISC_PROBE, provided for symetry with IPv4
++ * also see comments on IP_PMTUDISC_INTERFACE
++ */
++#define IPV6_PMTUDISC_INTERFACE 4
++/* weaker version of IPV6_PMTUDISC_INTERFACE, which allows packets to
++ * get fragmented if they exceed the interface mtu
++ */
++#define IPV6_PMTUDISC_OMIT 5
++
++/* Flowlabel */
++#define IPV6_FLOWLABEL_MGR 32
++#define IPV6_FLOWINFO_SEND 33
++
++#define IPV6_IPSEC_POLICY 34
++#define IPV6_XFRM_POLICY 35
++#endif
++
++/*
++ * Multicast:
++ * Following socket options are shared between IPv4 and IPv6.
++ *
++ * MCAST_JOIN_GROUP 42
++ * MCAST_BLOCK_SOURCE 43
++ * MCAST_UNBLOCK_SOURCE 44
++ * MCAST_LEAVE_GROUP 45
++ * MCAST_JOIN_SOURCE_GROUP 46
++ * MCAST_LEAVE_SOURCE_GROUP 47
++ * MCAST_MSFILTER 48
++ */
++
++/*
++ * Advanced API (RFC3542) (1)
++ *
++ * Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c.
++ */
++
++#define IPV6_RECVPKTINFO 49
++#define IPV6_PKTINFO 50
++#define IPV6_RECVHOPLIMIT 51
++#define IPV6_HOPLIMIT 52
++#define IPV6_RECVHOPOPTS 53
++#define IPV6_HOPOPTS 54
++#define IPV6_RTHDRDSTOPTS 55
++#define IPV6_RECVRTHDR 56
++#define IPV6_RTHDR 57
++#define IPV6_RECVDSTOPTS 58
++#define IPV6_DSTOPTS 59
++#define IPV6_RECVPATHMTU 60
++#define IPV6_PATHMTU 61
++#define IPV6_DONTFRAG 62
++#if 0 /* not yet */
++#define IPV6_USE_MIN_MTU 63
++#endif
++
++/*
++ * Netfilter (1)
++ *
++ * Following socket options are used in ip6_tables;
++ * see include/linux/netfilter_ipv6/ip6_tables.h.
++ *
++ * IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64
++ * IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65
++ */
++
++/*
++ * Advanced API (RFC3542) (2)
++ */
++#define IPV6_RECVTCLASS 66
++#define IPV6_TCLASS 67
++
++/*
++ * Netfilter (2)
++ *
++ * Following socket options are used in ip6_tables;
++ * see include/linux/netfilter_ipv6/ip6_tables.h.
++ *
++ * IP6T_SO_GET_REVISION_MATCH 68
++ * IP6T_SO_GET_REVISION_TARGET 69
++ * IP6T_SO_ORIGINAL_DST 80
++ */
++
++#define IPV6_AUTOFLOWLABEL 70
++/* RFC5014: Source address selection */
++#define IPV6_ADDR_PREFERENCES 72
++
++#define IPV6_PREFER_SRC_TMP 0x0001
++#define IPV6_PREFER_SRC_PUBLIC 0x0002
++#define IPV6_PREFER_SRC_PUBTMP_DEFAULT 0x0100
++#define IPV6_PREFER_SRC_COA 0x0004
++#define IPV6_PREFER_SRC_HOME 0x0400
++#define IPV6_PREFER_SRC_CGA 0x0008
++#define IPV6_PREFER_SRC_NONCGA 0x0800
++
++/* RFC5082: Generalized Ttl Security Mechanism */
++#define IPV6_MINHOPCOUNT 73
++
++#define IPV6_ORIGDSTADDR 74
++#define IPV6_RECVORIGDSTADDR IPV6_ORIGDSTADDR
++#define IPV6_TRANSPARENT 75
++#define IPV6_UNICAST_IF 76
++
++/*
++ * Multicast Routing:
++ * see include/uapi/linux/mroute6.h.
++ *
++ * MRT6_BASE 200
++ * ...
++ * MRT6_MAX
++ */
++#endif /* _LINUX_IN6_H */
+--- /dev/null
++++ b/include/linux-private/linux/libc-compat.h
+@@ -0,0 +1,143 @@
++/*
++ * Compatibility interface for userspace libc header coordination:
++ *
++ * Define compatibility macros that are used to control the inclusion or
++ * exclusion of UAPI structures and definitions in coordination with another
++ * userspace C library.
++ *
++ * This header is intended to solve the problem of UAPI definitions that
++ * conflict with userspace definitions. If a UAPI header has such conflicting
++ * definitions then the solution is as follows:
++ *
++ * * Synchronize the UAPI header and the libc headers so either one can be
++ * used and such that the ABI is preserved. If this is not possible then
++ * no simple compatibility interface exists (you need to write translating
++ * wrappers and rename things) and you can't use this interface.
++ *
++ * Then follow this process:
++ *
++ * (a) Include libc-compat.h in the UAPI header.
++ * e.g. #include <linux/libc-compat.h>
++ * This include must be as early as possible.
++ *
++ * (b) In libc-compat.h add enough code to detect that the comflicting
++ * userspace libc header has been included first.
++ *
++ * (c) If the userspace libc header has been included first define a set of
++ * guard macros of the form __UAPI_DEF_FOO and set their values to 1, else
++ * set their values to 0.
++ *
++ * (d) Back in the UAPI header with the conflicting definitions, guard the
++ * definitions with:
++ * #if __UAPI_DEF_FOO
++ * ...
++ * #endif
++ *
++ * This fixes the situation where the linux headers are included *after* the
++ * libc headers. To fix the problem with the inclusion in the other order the
++ * userspace libc headers must be fixed like this:
++ *
++ * * For all definitions that conflict with kernel definitions wrap those
++ * defines in the following:
++ * #if !__UAPI_DEF_FOO
++ * ...
++ * #endif
++ *
++ * This prevents the redefinition of a construct already defined by the kernel.
++ */
++#ifndef _LIBC_COMPAT_H
++#define _LIBC_COMPAT_H
++
++/* We have included glibc headers... */
++#if defined(__GLIBC__)
++
++/* Coordinate with glibc netinet/in.h header. */
++#if defined(_NETINET_IN_H)
++
++/* GLIBC headers included first so don't define anything
++ * that would already be defined. */
++#define __UAPI_DEF_IN_ADDR 0
++#define __UAPI_DEF_IN_IPPROTO 0
++#define __UAPI_DEF_IN_PKTINFO 0
++#define __UAPI_DEF_IP_MREQ 0
++#define __UAPI_DEF_SOCKADDR_IN 0
++#define __UAPI_DEF_IN_CLASS 0
++
++#define __UAPI_DEF_IN6_ADDR 0
++/* The exception is the in6_addr macros which must be defined
++ * if the glibc code didn't define them. This guard matches
++ * the guard in glibc/inet/netinet/in.h which defines the
++ * additional in6_addr macros e.g. s6_addr16, and s6_addr32. */
++#if defined(__USE_MISC) || defined (__USE_GNU)
++#define __UAPI_DEF_IN6_ADDR_ALT 0
++#else
++#define __UAPI_DEF_IN6_ADDR_ALT 1
++#endif
++#define __UAPI_DEF_SOCKADDR_IN6 0
++#define __UAPI_DEF_IPV6_MREQ 0
++#define __UAPI_DEF_IPPROTO_V6 0
++#define __UAPI_DEF_IPV6_OPTIONS 0
++#define __UAPI_DEF_IN6_PKTINFO 0
++#define __UAPI_DEF_IP6_MTUINFO 0
++
++#else
++
++/* Linux headers included first, and we must define everything
++ * we need. The expectation is that glibc will check the
++ * __UAPI_DEF_* defines and adjust appropriately. */
++#define __UAPI_DEF_IN_ADDR 1
++#define __UAPI_DEF_IN_IPPROTO 1
++#define __UAPI_DEF_IN_PKTINFO 1
++#define __UAPI_DEF_IP_MREQ 1
++#define __UAPI_DEF_SOCKADDR_IN 1
++#define __UAPI_DEF_IN_CLASS 1
++
++#define __UAPI_DEF_IN6_ADDR 1
++/* We unconditionally define the in6_addr macros and glibc must
++ * coordinate. */
++#define __UAPI_DEF_IN6_ADDR_ALT 1
++#define __UAPI_DEF_SOCKADDR_IN6 1
++#define __UAPI_DEF_IPV6_MREQ 1
++#define __UAPI_DEF_IPPROTO_V6 1
++#define __UAPI_DEF_IPV6_OPTIONS 1
++#define __UAPI_DEF_IN6_PKTINFO 1
++#define __UAPI_DEF_IP6_MTUINFO 1
++
++#endif /* _NETINET_IN_H */
++
++/* Definitions for xattr.h */
++#if defined(_SYS_XATTR_H)
++#define __UAPI_DEF_XATTR 0
++#else
++#define __UAPI_DEF_XATTR 1
++#endif
++
++/* If we did not see any headers from any supported C libraries,
++ * or we are being included in the kernel, then define everything
++ * that we need. */
++#else /* !defined(__GLIBC__) */
++
++/* Definitions for in.h */
++#define __UAPI_DEF_IN_ADDR 1
++#define __UAPI_DEF_IN_IPPROTO 1
++#define __UAPI_DEF_IN_PKTINFO 1
++#define __UAPI_DEF_IP_MREQ 1
++#define __UAPI_DEF_SOCKADDR_IN 1
++#define __UAPI_DEF_IN_CLASS 1
++
++/* Definitions for in6.h */
++#define __UAPI_DEF_IN6_ADDR 1
++#define __UAPI_DEF_IN6_ADDR_ALT 1
++#define __UAPI_DEF_SOCKADDR_IN6 1
++#define __UAPI_DEF_IPV6_MREQ 1
++#define __UAPI_DEF_IPPROTO_V6 1
++#define __UAPI_DEF_IPV6_OPTIONS 1
++#define __UAPI_DEF_IN6_PKTINFO 1
++#define __UAPI_DEF_IP6_MTUINFO 1
++
++/* Definitions for xattr.h */
++#define __UAPI_DEF_XATTR 1
++
++#endif /* __GLIBC__ */
++
++#endif /* _LIBC_COMPAT_H */
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