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001: /*
002:  * INET         An implementation of the TCP/IP protocol suite for the LINUX
003:  *              operating system.  INET is implemented using the  BSD Socket
004:  *              interface as the means of communication with the user level.
005:  *
006:  *              Definitions of the Internet Protocol.
007:  *
008:  * Version:     @(#)in.h        1.0.1   04/21/93
009:  *
010:  * Authors:     Original taken from the GNU Project <netinet/in.h> file.
011:  *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
012:  *
013:  *              This program is free software; you can redistribute it and/or
014:  *              modify it under the terms of the GNU General Public License
015:  *              as published by the Free Software Foundation; either version
016:  *              2 of the License, or (at your option) any later version.
017:  */
018: #ifndef _LINUX_IN_H
019: #define _LINUX_IN_H
020: 
021: #include <linux/types.h>
022: #include <linux/socket.h>
023: 
024: /* Standard well-defined IP protocols.  */
025: enum {
026:   IPPROTO_IP = 0,               /* Dummy protocol for TCP               */
027:   IPPROTO_ICMP = 1,             /* Internet Control Message Protocol    */
028:   IPPROTO_IGMP = 2,             /* Internet Group Management Protocol   */
029:   IPPROTO_IPIP = 4,             /* IPIP tunnels (older KA9Q tunnels use 94) */
030:   IPPROTO_TCP = 6,              /* Transmission Control Protocol        */
031:   IPPROTO_EGP = 8,              /* Exterior Gateway Protocol            */
032:   IPPROTO_PUP = 12,             /* PUP protocol                         */
033:   IPPROTO_UDP = 17,             /* User Datagram Protocol               */
034:   IPPROTO_IDP = 22,             /* XNS IDP protocol                     */
035:   IPPROTO_DCCP = 33,            /* Datagram Congestion Control Protocol */
036:   IPPROTO_RSVP = 46,            /* RSVP protocol                        */
037:   IPPROTO_GRE = 47,             /* Cisco GRE tunnels (rfc 1701,1702)    */
038: 
039:   IPPROTO_IPV6   = 41,          /* IPv6-in-IPv4 tunnelling              */
040: 
041:   IPPROTO_ESP = 50,            /* Encapsulation Security Payload protocol */
042:   IPPROTO_AH = 51,             /* Authentication Header protocol       */
043:   IPPROTO_BEETPH = 94,         /* IP option pseudo header for BEET */
044:   IPPROTO_PIM    = 103,         /* Protocol Independent Multicast       */
045: 
046:   IPPROTO_COMP   = 108,                /* Compression Header protocol */
047:   IPPROTO_SCTP   = 132,         /* Stream Control Transport Protocol    */
048:   IPPROTO_UDPLITE = 136,        /* UDP-Lite (RFC 3828)                  */
049: 
050:   IPPROTO_RAW    = 255,         /* Raw IP packets                       */
051:   IPPROTO_MAX
052: };
053: 
054: 
055: /* Internet address. */
056: struct in_addr {
057:         __be32  s_addr;
058: };
059: 
060: #define IP_TOS          1
061: #define IP_TTL          2
062: #define IP_HDRINCL      3
063: #define IP_OPTIONS      4
064: #define IP_ROUTER_ALERT 5
065: #define IP_RECVOPTS     6
066: #define IP_RETOPTS      7
067: #define IP_PKTINFO      8
068: #define IP_PKTOPTIONS   9
069: #define IP_MTU_DISCOVER 10
070: #define IP_RECVERR      11
071: #define IP_RECVTTL      12
072: #define IP_RECVTOS      13
073: #define IP_MTU          14
074: #define IP_FREEBIND     15
075: #define IP_IPSEC_POLICY 16
076: #define IP_XFRM_POLICY  17
077: #define IP_PASSSEC      18
078: #define IP_TRANSPARENT  19
079: 
080: /* BSD compatibility */
081: #define IP_RECVRETOPTS  IP_RETOPTS
082: 
083: /* TProxy original addresses */
084: #define IP_ORIGDSTADDR       20
085: #define IP_RECVORIGDSTADDR   IP_ORIGDSTADDR
086: 
087: #define IP_MINTTL       21
088: #define IP_NODEFRAG     22
089: 
090: /* IP_MTU_DISCOVER values */
091: #define IP_PMTUDISC_DONT                0       /* Never send DF frames */
092: #define IP_PMTUDISC_WANT                1       /* Use per route hints  */
093: #define IP_PMTUDISC_DO                  2       /* Always DF            */
094: #define IP_PMTUDISC_PROBE               3       /* Ignore dst pmtu      */
095: 
096: #define IP_MULTICAST_IF                 32
097: #define IP_MULTICAST_TTL                33
098: #define IP_MULTICAST_LOOP               34
099: #define IP_ADD_MEMBERSHIP               35
100: #define IP_DROP_MEMBERSHIP              36
101: #define IP_UNBLOCK_SOURCE               37
102: #define IP_BLOCK_SOURCE                 38
103: #define IP_ADD_SOURCE_MEMBERSHIP        39
104: #define IP_DROP_SOURCE_MEMBERSHIP       40
105: #define IP_MSFILTER                     41
106: #define MCAST_JOIN_GROUP                42
107: #define MCAST_BLOCK_SOURCE              43
108: #define MCAST_UNBLOCK_SOURCE            44
109: #define MCAST_LEAVE_GROUP               45
110: #define MCAST_JOIN_SOURCE_GROUP         46
111: #define MCAST_LEAVE_SOURCE_GROUP        47
112: #define MCAST_MSFILTER                  48
113: #define IP_MULTICAST_ALL                49
114: 
115: #define MCAST_EXCLUDE   0
116: #define MCAST_INCLUDE   1
117: 
118: /* These need to appear somewhere around here */
119: #define IP_DEFAULT_MULTICAST_TTL        1
120: #define IP_DEFAULT_MULTICAST_LOOP       1
121: 
122: /* Request struct for multicast socket ops */
123: 
124: struct ip_mreq  {
125:         struct in_addr imr_multiaddr;   /* IP multicast address of group */
126:         struct in_addr imr_interface;   /* local IP address of interface */
127: };
128: 
129: struct ip_mreqn {
130:         struct in_addr  imr_multiaddr;          /* IP multicast address of group */
131:         struct in_addr  imr_address;            /* local IP address of interface */
132:         int             imr_ifindex;            /* Interface index */
133: };
134: 
135: struct ip_mreq_source {
136:         __be32          imr_multiaddr;
137:         __be32          imr_interface;
138:         __be32          imr_sourceaddr;
139: };
140: 
141: struct ip_msfilter {
142:         __be32          imsf_multiaddr;
143:         __be32          imsf_interface;
144:         __u32           imsf_fmode;
145:         __u32           imsf_numsrc;
146:         __be32          imsf_slist[1];
147: };
148: 
149: #define IP_MSFILTER_SIZE(numsrc) \
150:         (sizeof(struct ip_msfilter) - sizeof(__u32) \
151:         + (numsrc) * sizeof(__u32))
152: 
153: struct group_req {
154:         __u32                            gr_interface;  /* interface index */
155:         struct __kernel_sockaddr_storage gr_group;      /* group address */
156: };
157: 
158: struct group_source_req {
159:         __u32                            gsr_interface; /* interface index */
160:         struct __kernel_sockaddr_storage gsr_group;     /* group address */
161:         struct __kernel_sockaddr_storage gsr_source;    /* source address */
162: };
163: 
164: struct group_filter {
165:         __u32                            gf_interface;  /* interface index */
166:         struct __kernel_sockaddr_storage gf_group;      /* multicast address */
167:         __u32                            gf_fmode;      /* filter mode */
168:         __u32                            gf_numsrc;     /* number of sources */
169:         struct __kernel_sockaddr_storage gf_slist[1];   /* interface index */
170: };
171: 
172: #define GROUP_FILTER_SIZE(numsrc) \
173:         (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \
174:         + (numsrc) * sizeof(struct __kernel_sockaddr_storage))
175: 
176: struct in_pktinfo {
177:         int             ipi_ifindex;
178:         struct in_addr  ipi_spec_dst;
179:         struct in_addr  ipi_addr;
180: };
181: 
182: /* Structure describing an Internet (IP) socket address. */
183: #define __SOCK_SIZE__   16              /* sizeof(struct sockaddr)      */
184: struct sockaddr_in {
185:   __kernel_sa_family_t  sin_family;     /* Address family               */
186:   __be16                sin_port;       /* Port number                  */
187:   struct in_addr        sin_addr;       /* Internet address             */
188: 
189:   /* Pad to size of `struct sockaddr'. */
190:   unsigned char         __pad[__SOCK_SIZE__ - sizeof(short int) -
191:                         sizeof(unsigned short int) - sizeof(struct in_addr)];
192: };
193: #define sin_zero        __pad           /* for BSD UNIX comp. -FvK      */
194: 
195: 
196: /*
197:  * Definitions of the bits in an Internet address integer.
198:  * On subnets, host and network parts are found according
199:  * to the subnet mask, not these masks.
200:  */
201: #define IN_CLASSA(a)            ((((long int) (a)) & 0x80000000) == 0)
202: #define IN_CLASSA_NET           0xff000000
203: #define IN_CLASSA_NSHIFT        24
204: #define IN_CLASSA_HOST          (0xffffffff & ~IN_CLASSA_NET)
205: #define IN_CLASSA_MAX           128
206: 
207: #define IN_CLASSB(a)            ((((long int) (a)) & 0xc0000000) == 0x80000000)
208: #define IN_CLASSB_NET           0xffff0000
209: #define IN_CLASSB_NSHIFT        16
210: #define IN_CLASSB_HOST          (0xffffffff & ~IN_CLASSB_NET)
211: #define IN_CLASSB_MAX           65536
212: 
213: #define IN_CLASSC(a)            ((((long int) (a)) & 0xe0000000) == 0xc0000000)
214: #define IN_CLASSC_NET           0xffffff00
215: #define IN_CLASSC_NSHIFT        8
216: #define IN_CLASSC_HOST          (0xffffffff & ~IN_CLASSC_NET)
217: 
218: #define IN_CLASSD(a)            ((((long int) (a)) & 0xf0000000) == 0xe0000000)
219: #define IN_MULTICAST(a)         IN_CLASSD(a)
220: #define IN_MULTICAST_NET        0xF0000000
221: 
222: #define IN_EXPERIMENTAL(a)      ((((long int) (a)) & 0xf0000000) == 0xf0000000)
223: #define IN_BADCLASS(a)          IN_EXPERIMENTAL((a))
224: 
225: /* Address to accept any incoming messages. */
226: #define INADDR_ANY              ((unsigned long int) 0x00000000)
227: 
228: /* Address to send to all hosts. */
229: #define INADDR_BROADCAST        ((unsigned long int) 0xffffffff)
230: 
231: /* Address indicating an error return. */
232: #define INADDR_NONE             ((unsigned long int) 0xffffffff)
233: 
234: /* Network number for local host loopback. */
235: #define IN_LOOPBACKNET          127
236: 
237: /* Address to loopback in software to local host.  */
238: #define INADDR_LOOPBACK         0x7f000001      /* 127.0.0.1   */
239: #define IN_LOOPBACK(a)          ((((long int) (a)) & 0xff000000) == 0x7f000000)
240: 
241: /* Defines for Multicast INADDR */
242: #define INADDR_UNSPEC_GROUP     0xe0000000U     /* 224.0.0.0   */
243: #define INADDR_ALLHOSTS_GROUP   0xe0000001U     /* 224.0.0.1   */
244: #define INADDR_ALLRTRS_GROUP    0xe0000002U     /* 224.0.0.2 */
245: #define INADDR_MAX_LOCAL_GROUP  0xe00000ffU     /* 224.0.0.255 */
246: 
247: 
248: /* <asm/byteorder.h> contains the htonl type stuff.. */
249: #include <asm/byteorder.h> 
250: 
251: 
252: #endif  /* _LINUX_IN_H */
253: 

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