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+/* 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 _UAPI_LINUX_IN_H
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+#define _UAPI_LINUX_IN_H
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+
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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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+
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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_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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+};
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+#endif
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+
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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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+
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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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+
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+/* BSD compatibility */
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+#define IP_RECVRETOPTS IP_RETOPTS
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+
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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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+
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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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+
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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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+
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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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+
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+#define MCAST_EXCLUDE 0
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+#define MCAST_INCLUDE 1
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+
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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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+
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+/* Request struct for multicast socket ops */
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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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+/* Address indicating an error return. */
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+#define INADDR_NONE ((unsigned long int) 0xffffffff)
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+
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+/* Network number for local host loopback. */
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+#define IN_LOOPBACKNET 127
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+
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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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+
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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_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */
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+#endif
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+
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+/* <asm/byteorder.h> contains the htonl type stuff.. */
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+#include <asm/byteorder.h>
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+
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+
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+#endif /* _UAPI_LINUX_IN_H */
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Ingo Molnar