/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */

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/*

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* INET An implementation of the TCP/IP protocol suite for the LINUX

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* operating system. INET is implemented using the BSD Socket

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* interface as the means of communication with the user level.

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*

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* Definitions of the Internet Protocol.

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*

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* Version: @(#)in.h 1.0.1 04/21/93

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*

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* Authors: Original taken from the GNU Project <netinet/in.h> file.

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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>

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*

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* This program is free software; you can redistribute it and/or

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* modify it under the terms of the GNU General Public License

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* as published by the Free Software Foundation; either version

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* 2 of the License, or (at your option) any later version.

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*/

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#ifndef _LINUX_IN_H

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#define _LINUX_IN_H

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#include <linux/types.h>

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#include <linux/libc-compat.h>

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#include <linux/socket.h>

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#if __UAPI_DEF_IN_IPPROTO

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/* Standard well-defined IP protocols. */

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enum {

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IPPROTO_IP = 0, /* Dummy protocol for TCP */

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#define IPPROTO_IP IPPROTO_IP

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IPPROTO_ICMP = 1, /* Internet Control Message Protocol */

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#define IPPROTO_ICMP IPPROTO_ICMP

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IPPROTO_IGMP = 2, /* Internet Group Management Protocol */

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#define IPPROTO_IGMP IPPROTO_IGMP

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IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */

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#define IPPROTO_IPIP IPPROTO_IPIP

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IPPROTO_TCP = 6, /* Transmission Control Protocol */

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#define IPPROTO_TCP IPPROTO_TCP

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IPPROTO_EGP = 8, /* Exterior Gateway Protocol */

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#define IPPROTO_EGP IPPROTO_EGP

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IPPROTO_PUP = 12, /* PUP protocol */

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#define IPPROTO_PUP IPPROTO_PUP

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IPPROTO_UDP = 17, /* User Datagram Protocol */

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#define IPPROTO_UDP IPPROTO_UDP

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IPPROTO_IDP = 22, /* XNS IDP protocol */

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#define IPPROTO_IDP IPPROTO_IDP

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IPPROTO_TP = 29, /* SO Transport Protocol Class 4 */

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#define IPPROTO_TP IPPROTO_TP

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IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol */

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#define IPPROTO_DCCP IPPROTO_DCCP

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IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling */

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#define IPPROTO_IPV6 IPPROTO_IPV6

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IPPROTO_RSVP = 46, /* RSVP Protocol */

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#define IPPROTO_RSVP IPPROTO_RSVP

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IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */

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#define IPPROTO_GRE IPPROTO_GRE

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IPPROTO_ESP = 50, /* Encapsulation Security Payload protocol */

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#define IPPROTO_ESP IPPROTO_ESP

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IPPROTO_AH = 51, /* Authentication Header protocol */

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#define IPPROTO_AH IPPROTO_AH

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IPPROTO_MTP = 92, /* Multicast Transport Protocol */

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#define IPPROTO_MTP IPPROTO_MTP

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IPPROTO_BEETPH = 94, /* IP option pseudo header for BEET */

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#define IPPROTO_BEETPH IPPROTO_BEETPH

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IPPROTO_ENCAP = 98, /* Encapsulation Header */

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#define IPPROTO_ENCAP IPPROTO_ENCAP

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IPPROTO_PIM = 103, /* Protocol Independent Multicast */

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#define IPPROTO_PIM IPPROTO_PIM

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IPPROTO_COMP = 108, /* Compression Header Protocol */

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#define IPPROTO_COMP IPPROTO_COMP

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IPPROTO_L2TP = 115, /* Layer 2 Tunnelling Protocol */

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#define IPPROTO_L2TP IPPROTO_L2TP

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IPPROTO_SCTP = 132, /* Stream Control Transport Protocol */

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#define IPPROTO_SCTP IPPROTO_SCTP

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IPPROTO_UDPLITE = 136, /* UDP-Lite (RFC 3828) */

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#define IPPROTO_UDPLITE IPPROTO_UDPLITE

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IPPROTO_MPLS = 137, /* MPLS in IP (RFC 4023) */

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#define IPPROTO_MPLS IPPROTO_MPLS

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IPPROTO_RAW = 255, /* Raw IP packets */

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#define IPPROTO_RAW IPPROTO_RAW

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IPPROTO_MAX

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#define IPPROTO_MPTCP 262

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};

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#endif

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#if __UAPI_DEF_IN_ADDR

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/* Internet address. */

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struct in_addr {

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__be32 s_addr;

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};

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#endif

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#define IP_TOS 1

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#define IP_TTL 2

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#define IP_HDRINCL 3

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#define IP_OPTIONS 4

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#define IP_ROUTER_ALERT 5

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#define IP_RECVOPTS 6

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#define IP_RETOPTS 7

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#define IP_PKTINFO 8

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#define IP_PKTOPTIONS 9

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#define IP_MTU_DISCOVER 10

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#define IP_RECVERR 11

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#define IP_RECVTTL 12

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#define IP_RECVTOS 13

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#define IP_MTU 14

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#define IP_FREEBIND 15

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#define IP_IPSEC_POLICY 16

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#define IP_XFRM_POLICY 17

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#define IP_PASSSEC 18

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#define IP_TRANSPARENT 19

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/* BSD compatibility */

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#define IP_RECVRETOPTS IP_RETOPTS

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/* TProxy original addresses */

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#define IP_ORIGDSTADDR 20

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#define IP_RECVORIGDSTADDR IP_ORIGDSTADDR

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#define IP_MINTTL 21

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#define IP_NODEFRAG 22

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#define IP_CHECKSUM 23

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#define IP_BIND_ADDRESS_NO_PORT 24

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#define IP_RECVFRAGSIZE 25

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/* IP_MTU_DISCOVER values */

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#define IP_PMTUDISC_DONT 0 /* Never send DF frames */

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#define IP_PMTUDISC_WANT 1 /* Use per route hints */

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#define IP_PMTUDISC_DO 2 /* Always DF */

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#define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu */

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/* Always use interface mtu (ignores dst pmtu) but don't set DF flag.

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* Also incoming ICMP frag_needed notifications will be ignored on

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* this socket to prevent accepting spoofed ones.

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*/

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#define IP_PMTUDISC_INTERFACE 4

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/* weaker version of IP_PMTUDISC_INTERFACE, which allos packets to get

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* fragmented if they exeed the interface mtu

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*/

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#define IP_PMTUDISC_OMIT 5

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#define IP_MULTICAST_IF 32

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#define IP_MULTICAST_TTL 33

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#define IP_MULTICAST_LOOP 34

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#define IP_ADD_MEMBERSHIP 35

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#define IP_DROP_MEMBERSHIP 36

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#define IP_UNBLOCK_SOURCE 37

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#define IP_BLOCK_SOURCE 38

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#define IP_ADD_SOURCE_MEMBERSHIP 39

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#define IP_DROP_SOURCE_MEMBERSHIP 40

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#define IP_MSFILTER 41

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#define MCAST_JOIN_GROUP 42

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#define MCAST_BLOCK_SOURCE 43

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#define MCAST_UNBLOCK_SOURCE 44

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#define MCAST_LEAVE_GROUP 45

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#define MCAST_JOIN_SOURCE_GROUP 46

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#define MCAST_LEAVE_SOURCE_GROUP 47

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#define MCAST_MSFILTER 48

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#define IP_MULTICAST_ALL 49

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#define IP_UNICAST_IF 50

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#define MCAST_EXCLUDE 0

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#define MCAST_INCLUDE 1

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/* These need to appear somewhere around here */

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#define IP_DEFAULT_MULTICAST_TTL 1

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#define IP_DEFAULT_MULTICAST_LOOP 1

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/* Request struct for multicast socket ops */

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#if __UAPI_DEF_IP_MREQ

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struct ip_mreq {

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struct in_addr imr_multiaddr; /* IP multicast address of group */

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struct in_addr imr_interface; /* local IP address of interface */

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};

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struct ip_mreqn {

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struct in_addr imr_multiaddr; /* IP multicast address of group */

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struct in_addr imr_address; /* local IP address of interface */

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int imr_ifindex; /* Interface index */

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};

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struct ip_mreq_source {

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__be32 imr_multiaddr;

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__be32 imr_interface;

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__be32 imr_sourceaddr;

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};

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struct ip_msfilter {

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__be32 imsf_multiaddr;

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__be32 imsf_interface;

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__u32 imsf_fmode;

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__u32 imsf_numsrc;

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__be32 imsf_slist[1];

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};

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#define IP_MSFILTER_SIZE(numsrc) \

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(sizeof(struct ip_msfilter) - sizeof(__u32) \

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+ (numsrc) * sizeof(__u32))

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struct group_req {

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__u32 gr_interface; /* interface index */

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struct __kernel_sockaddr_storage gr_group; /* group address */

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};

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struct group_source_req {

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__u32 gsr_interface; /* interface index */

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struct __kernel_sockaddr_storage gsr_group; /* group address */

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struct __kernel_sockaddr_storage gsr_source; /* source address */

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};

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struct group_filter {

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__u32 gf_interface; /* interface index */

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struct __kernel_sockaddr_storage gf_group; /* multicast address */

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__u32 gf_fmode; /* filter mode */

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__u32 gf_numsrc; /* number of sources */

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struct __kernel_sockaddr_storage gf_slist[1]; /* interface index */

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};

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#define GROUP_FILTER_SIZE(numsrc) \

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(sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \

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+ (numsrc) * sizeof(struct __kernel_sockaddr_storage))

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#endif

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#if __UAPI_DEF_IN_PKTINFO

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struct in_pktinfo {

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int ipi_ifindex;

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struct in_addr ipi_spec_dst;

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struct in_addr ipi_addr;

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};

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#endif

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/* Structure describing an Internet (IP) socket address. */

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#if __UAPI_DEF_SOCKADDR_IN

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#define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */

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struct sockaddr_in {

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__kernel_sa_family_t sin_family; /* Address family */

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__be16 sin_port; /* Port number */

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struct in_addr sin_addr; /* Internet address */

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/* Pad to size of `struct sockaddr'. */

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unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) -

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sizeof(unsigned short int) - sizeof(struct in_addr)];

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};

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#define sin_zero __pad /* for BSD UNIX comp. -FvK */

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#endif

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#if __UAPI_DEF_IN_CLASS

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/*

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* Definitions of the bits in an Internet address integer.

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* On subnets, host and network parts are found according

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* to the subnet mask, not these masks.

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*/

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#define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0)

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#define IN_CLASSA_NET 0xff000000

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#define IN_CLASSA_NSHIFT 24

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#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)

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#define IN_CLASSA_MAX 128

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#define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000)

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#define IN_CLASSB_NET 0xffff0000

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#define IN_CLASSB_NSHIFT 16

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#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)

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#define IN_CLASSB_MAX 65536

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#define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000)

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#define IN_CLASSC_NET 0xffffff00

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#define IN_CLASSC_NSHIFT 8

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#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)

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#define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000)

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#define IN_MULTICAST(a) IN_CLASSD(a)

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#define IN_MULTICAST_NET 0xF0000000

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#define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000)

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#define IN_BADCLASS(a) IN_EXPERIMENTAL((a))

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/* Address to accept any incoming messages. */

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#define INADDR_ANY ((unsigned long int) 0x00000000)

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/* Address to send to all hosts. */

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#define INADDR_BROADCAST ((unsigned long int) 0xffffffff)

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/* Address indicating an error return. */

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#define INADDR_NONE ((unsigned long int) 0xffffffff)

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/* Dummy address for src of ICMP replies if no real address is set (RFC7600). */

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#define INADDR_DUMMY ((unsigned long int) 0xc0000008)

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/* Network number for local host loopback. */

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#define IN_LOOPBACKNET 127

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/* Address to loopback in software to local host. */

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#define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */

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#define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000)

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/* Defines for Multicast INADDR */

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#define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */

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#define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */

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#define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */

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#define INADDR_ALLSNOOPERS_GROUP 0xe000006aU /* 224.0.0.106 */

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#define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */

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#endif

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/* <asm/byteorder.h> contains the htonl type stuff.. */

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#include <asm/byteorder.h>

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#endif /* _LINUX_IN_H */

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