Quelle in.h Sprache: C

/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* 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/stddef.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_L2TP = 115,  /* Layer 2 Tunnelling Protocol */
#define IPPROTO_L2TP  IPPROTO_L2TP
  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_ETHERNET = 143, /* Ethernet-within-IPv6 Encapsulation */
#define IPPROTO_ETHERNET IPPROTO_ETHERNET
  IPPROTO_AGGFRAG = 144, /* AGGFRAG in ESP (RFC 9347) */
#define IPPROTO_AGGFRAG  IPPROTO_AGGFRAG
  IPPROTO_RAW = 255,  /* Raw IP packets */
#define IPPROTO_RAW  IPPROTO_RAW
  IPPROTO_SMC = 256,  /* Shared Memory Communications */
#define IPPROTO_SMC  IPPROTO_SMC
  IPPROTO_MPTCP = 262,  /* Multipath TCP connection */
#define IPPROTO_MPTCP  IPPROTO_MPTCP
  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
#define IP_RECVFRAGSIZE 25
#define IP_RECVERR_RFC4884 26

/* 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 allows packets to get
* fragmented if they exceed 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 IP_LOCAL_PORT_RANGE  51
#define IP_PROTOCOL   52

#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;
union {
  __be32  imsf_slist[1];
  __DECLARE_FLEX_ARRAY(__be32, imsf_slist_flex);
};
};

#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 {
union {
  struct {
   __u32     gf_interface_aux; /* interface index */
   struct __kernel_sockaddr_storage gf_group_aux;    /* multicast address */
   __u32     gf_fmode_aux;    /* filter mode */
   __u32     gf_numsrc_aux;    /* number of sources */
   struct __kernel_sockaddr_storage gf_slist[1];    /* interface index */
  };
  struct {
   __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_flex[]; /* 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 0xe0000000

#define IN_BADCLASS(a)  (((long int) (a) ) == (long int)0xffffffff)
#define IN_EXPERIMENTAL(a) IN_BADCLASS((a))

#define IN_CLASSE(a)  ((((long int) (a)) & 0xf0000000) == 0xf0000000)
#define IN_CLASSE_NET  0xffffffff
#define IN_CLASSE_NSHIFT 0

/* 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)

/* Dummy address for src of ICMP replies if no real address is set (RFC7600). */
#define INADDR_DUMMY  ((unsigned long int) 0xc0000008)

/* 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_ALLSNOOPERS_GROUP 0xe000006aU /* 224.0.0.106 */
#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 */

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