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/* 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 */