/*
 * 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 _UAPI_LINUX_IN_H
#define _UAPI_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 /* _UAPI_LINUX_IN_H */