1 /* 2 * INET An implementation of the TCP/IP protocol suite for the LINUX 3 * operating system. INET is implemented using the BSD Socket 4 * interface as the means of communication with the user level. 5 * 6 * Definitions of the Internet Protocol. 7 * 8 * Version: @(#)in.h 1.0.1 04/21/93 9 * 10 * Authors: Original taken from the GNU Project <netinet/in.h> file. 11 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License 15 * as published by the Free Software Foundation; either version 16 * 2 of the License, or (at your option) any later version. 17 */ 18 #ifndef _UAPI_LINUX_IN_H 19 #define _UAPI_LINUX_IN_H 20 21 #include <linux/types.h> 22 #include <linux/socket.h> 23 24 /* Standard well-defined IP protocols. */ 25 enum { 26 IPPROTO_IP = 0, /* Dummy protocol for TCP */ 27 #define IPPROTO_IP IPPROTO_IP 28 IPPROTO_ICMP = 1, /* Internet Control Message Protocol */ 29 #define IPPROTO_ICMP IPPROTO_ICMP 30 IPPROTO_IGMP = 2, /* Internet Group Management Protocol */ 31 #define IPPROTO_IGMP IPPROTO_IGMP 32 IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */ 33 #define IPPROTO_IPIP IPPROTO_IPIP 34 IPPROTO_TCP = 6, /* Transmission Control Protocol */ 35 #define IPPROTO_TCP IPPROTO_TCP 36 IPPROTO_EGP = 8, /* Exterior Gateway Protocol */ 37 #define IPPROTO_EGP IPPROTO_EGP 38 IPPROTO_PUP = 12, /* PUP protocol */ 39 #define IPPROTO_PUP IPPROTO_PUP 40 IPPROTO_UDP = 17, /* User Datagram Protocol */ 41 #define IPPROTO_UDP IPPROTO_UDP 42 IPPROTO_IDP = 22, /* XNS IDP protocol */ 43 #define IPPROTO_IDP IPPROTO_IDP 44 IPPROTO_TP = 29, /* SO Transport Protocol Class 4 */ 45 #define IPPROTO_TP IPPROTO_TP 46 IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol */ 47 #define IPPROTO_DCCP IPPROTO_DCCP 48 IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling */ 49 #define IPPROTO_IPV6 IPPROTO_IPV6 50 IPPROTO_RSVP = 46, /* RSVP Protocol */ 51 #define IPPROTO_RSVP IPPROTO_RSVP 52 IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */ 53 #define IPPROTO_GRE IPPROTO_GRE 54 IPPROTO_ESP = 50, /* Encapsulation Security Payload protocol */ 55 #define IPPROTO_ESP IPPROTO_ESP 56 IPPROTO_AH = 51, /* Authentication Header protocol */ 57 #define IPPROTO_AH IPPROTO_AH 58 IPPROTO_MTP = 92, /* Multicast Transport Protocol */ 59 #define IPPROTO_MTP IPPROTO_MTP 60 IPPROTO_BEETPH = 94, /* IP option pseudo header for BEET */ 61 #define IPPROTO_BEETPH IPPROTO_BEETPH 62 IPPROTO_ENCAP = 98, /* Encapsulation Header */ 63 #define IPPROTO_ENCAP IPPROTO_ENCAP 64 IPPROTO_PIM = 103, /* Protocol Independent Multicast */ 65 #define IPPROTO_PIM IPPROTO_PIM 66 IPPROTO_COMP = 108, /* Compression Header Protocol */ 67 #define IPPROTO_COMP IPPROTO_COMP 68 IPPROTO_SCTP = 132, /* Stream Control Transport Protocol */ 69 #define IPPROTO_SCTP IPPROTO_SCTP 70 IPPROTO_UDPLITE = 136, /* UDP-Lite (RFC 3828) */ 71 #define IPPROTO_UDPLITE IPPROTO_UDPLITE 72 IPPROTO_RAW = 255, /* Raw IP packets */ 73 #define IPPROTO_RAW IPPROTO_RAW 74 IPPROTO_MAX 75 }; 76 77 78 /* Internet address. */ 79 struct in_addr { 80 __be32 s_addr; 81 }; 82 83 #define IP_TOS 1 84 #define IP_TTL 2 85 #define IP_HDRINCL 3 86 #define IP_OPTIONS 4 87 #define IP_ROUTER_ALERT 5 88 #define IP_RECVOPTS 6 89 #define IP_RETOPTS 7 90 #define IP_PKTINFO 8 91 #define IP_PKTOPTIONS 9 92 #define IP_MTU_DISCOVER 10 93 #define IP_RECVERR 11 94 #define IP_RECVTTL 12 95 #define IP_RECVTOS 13 96 #define IP_MTU 14 97 #define IP_FREEBIND 15 98 #define IP_IPSEC_POLICY 16 99 #define IP_XFRM_POLICY 17 100 #define IP_PASSSEC 18 101 #define IP_TRANSPARENT 19 102 103 /* BSD compatibility */ 104 #define IP_RECVRETOPTS IP_RETOPTS 105 106 /* TProxy original addresses */ 107 #define IP_ORIGDSTADDR 20 108 #define IP_RECVORIGDSTADDR IP_ORIGDSTADDR 109 110 #define IP_MINTTL 21 111 #define IP_NODEFRAG 22 112 #define IP_CHECKSUM 23 113 114 /* IP_MTU_DISCOVER values */ 115 #define IP_PMTUDISC_DONT 0 /* Never send DF frames */ 116 #define IP_PMTUDISC_WANT 1 /* Use per route hints */ 117 #define IP_PMTUDISC_DO 2 /* Always DF */ 118 #define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu */ 119 /* Always use interface mtu (ignores dst pmtu) but don't set DF flag. 120 * Also incoming ICMP frag_needed notifications will be ignored on 121 * this socket to prevent accepting spoofed ones. 122 */ 123 #define IP_PMTUDISC_INTERFACE 4 124 /* weaker version of IP_PMTUDISC_INTERFACE, which allos packets to get 125 * fragmented if they exeed the interface mtu 126 */ 127 #define IP_PMTUDISC_OMIT 5 128 129 #define IP_MULTICAST_IF 32 130 #define IP_MULTICAST_TTL 33 131 #define IP_MULTICAST_LOOP 34 132 #define IP_ADD_MEMBERSHIP 35 133 #define IP_DROP_MEMBERSHIP 36 134 #define IP_UNBLOCK_SOURCE 37 135 #define IP_BLOCK_SOURCE 38 136 #define IP_ADD_SOURCE_MEMBERSHIP 39 137 #define IP_DROP_SOURCE_MEMBERSHIP 40 138 #define IP_MSFILTER 41 139 #define MCAST_JOIN_GROUP 42 140 #define MCAST_BLOCK_SOURCE 43 141 #define MCAST_UNBLOCK_SOURCE 44 142 #define MCAST_LEAVE_GROUP 45 143 #define MCAST_JOIN_SOURCE_GROUP 46 144 #define MCAST_LEAVE_SOURCE_GROUP 47 145 #define MCAST_MSFILTER 48 146 #define IP_MULTICAST_ALL 49 147 #define IP_UNICAST_IF 50 148 149 #define MCAST_EXCLUDE 0 150 #define MCAST_INCLUDE 1 151 152 /* These need to appear somewhere around here */ 153 #define IP_DEFAULT_MULTICAST_TTL 1 154 #define IP_DEFAULT_MULTICAST_LOOP 1 155 156 /* Request struct for multicast socket ops */ 157 158 struct ip_mreq { 159 struct in_addr imr_multiaddr; /* IP multicast address of group */ 160 struct in_addr imr_interface; /* local IP address of interface */ 161 }; 162 163 struct ip_mreqn { 164 struct in_addr imr_multiaddr; /* IP multicast address of group */ 165 struct in_addr imr_address; /* local IP address of interface */ 166 int imr_ifindex; /* Interface index */ 167 }; 168 169 struct ip_mreq_source { 170 __be32 imr_multiaddr; 171 __be32 imr_interface; 172 __be32 imr_sourceaddr; 173 }; 174 175 struct ip_msfilter { 176 __be32 imsf_multiaddr; 177 __be32 imsf_interface; 178 __u32 imsf_fmode; 179 __u32 imsf_numsrc; 180 __be32 imsf_slist[1]; 181 }; 182 183 #define IP_MSFILTER_SIZE(numsrc) \ 184 (sizeof(struct ip_msfilter) - sizeof(__u32) \ 185 + (numsrc) * sizeof(__u32)) 186 187 struct group_req { 188 __u32 gr_interface; /* interface index */ 189 struct __kernel_sockaddr_storage gr_group; /* group address */ 190 }; 191 192 struct group_source_req { 193 __u32 gsr_interface; /* interface index */ 194 struct __kernel_sockaddr_storage gsr_group; /* group address */ 195 struct __kernel_sockaddr_storage gsr_source; /* source address */ 196 }; 197 198 struct group_filter { 199 __u32 gf_interface; /* interface index */ 200 struct __kernel_sockaddr_storage gf_group; /* multicast address */ 201 __u32 gf_fmode; /* filter mode */ 202 __u32 gf_numsrc; /* number of sources */ 203 struct __kernel_sockaddr_storage gf_slist[1]; /* interface index */ 204 }; 205 206 #define GROUP_FILTER_SIZE(numsrc) \ 207 (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \ 208 + (numsrc) * sizeof(struct __kernel_sockaddr_storage)) 209 210 struct in_pktinfo { 211 int ipi_ifindex; 212 struct in_addr ipi_spec_dst; 213 struct in_addr ipi_addr; 214 }; 215 216 /* Structure describing an Internet (IP) socket address. */ 217 #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */ 218 struct sockaddr_in { 219 __kernel_sa_family_t sin_family; /* Address family */ 220 __be16 sin_port; /* Port number */ 221 struct in_addr sin_addr; /* Internet address */ 222 223 /* Pad to size of `struct sockaddr'. */ 224 unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) - 225 sizeof(unsigned short int) - sizeof(struct in_addr)]; 226 }; 227 #define sin_zero __pad /* for BSD UNIX comp. -FvK */ 228 229 230 /* 231 * Definitions of the bits in an Internet address integer. 232 * On subnets, host and network parts are found according 233 * to the subnet mask, not these masks. 234 */ 235 #define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0) 236 #define IN_CLASSA_NET 0xff000000 237 #define IN_CLASSA_NSHIFT 24 238 #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET) 239 #define IN_CLASSA_MAX 128 240 241 #define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000) 242 #define IN_CLASSB_NET 0xffff0000 243 #define IN_CLASSB_NSHIFT 16 244 #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET) 245 #define IN_CLASSB_MAX 65536 246 247 #define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000) 248 #define IN_CLASSC_NET 0xffffff00 249 #define IN_CLASSC_NSHIFT 8 250 #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET) 251 252 #define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000) 253 #define IN_MULTICAST(a) IN_CLASSD(a) 254 #define IN_MULTICAST_NET 0xF0000000 255 256 #define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000) 257 #define IN_BADCLASS(a) IN_EXPERIMENTAL((a)) 258 259 /* Address to accept any incoming messages. */ 260 #define INADDR_ANY ((unsigned long int) 0x00000000) 261 262 /* Address to send to all hosts. */ 263 #define INADDR_BROADCAST ((unsigned long int) 0xffffffff) 264 265 /* Address indicating an error return. */ 266 #define INADDR_NONE ((unsigned long int) 0xffffffff) 267 268 /* Network number for local host loopback. */ 269 #define IN_LOOPBACKNET 127 270 271 /* Address to loopback in software to local host. */ 272 #define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */ 273 #define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000) 274 275 /* Defines for Multicast INADDR */ 276 #define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */ 277 #define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */ 278 #define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */ 279 #define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */ 280 281 282 /* <asm/byteorder.h> contains the htonl type stuff.. */ 283 #include <asm/byteorder.h> 284 285 286 #endif /* _UAPI_LINUX_IN_H */ 287