LCOV - code coverage report
Current view: top level - include/linux - in.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2017-01-25 Functions: 0 0 -

          Line data    Source code
       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 _LINUX_IN_H
      19             : #define _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             :   IPPROTO_ICMP = 1,             /* Internet Control Message Protocol    */
      28             :   IPPROTO_IGMP = 2,             /* Internet Group Management Protocol   */
      29             :   IPPROTO_IPIP = 4,             /* IPIP tunnels (older KA9Q tunnels use 94) */
      30             :   IPPROTO_TCP = 6,              /* Transmission Control Protocol        */
      31             :   IPPROTO_EGP = 8,              /* Exterior Gateway Protocol            */
      32             :   IPPROTO_PUP = 12,             /* PUP protocol                         */
      33             :   IPPROTO_UDP = 17,             /* User Datagram Protocol               */
      34             :   IPPROTO_IDP = 22,             /* XNS IDP protocol                     */
      35             :   IPPROTO_DCCP = 33,            /* Datagram Congestion Control Protocol */
      36             :   IPPROTO_RSVP = 46,            /* RSVP protocol                        */
      37             :   IPPROTO_GRE = 47,             /* Cisco GRE tunnels (rfc 1701,1702)    */
      38             : 
      39             :   IPPROTO_IPV6   = 41,          /* IPv6-in-IPv4 tunnelling              */
      40             : 
      41             :   IPPROTO_ESP = 50,            /* Encapsulation Security Payload protocol */
      42             :   IPPROTO_AH = 51,             /* Authentication Header protocol       */
      43             :   IPPROTO_BEETPH = 94,         /* IP option pseudo header for BEET */
      44             :   IPPROTO_PIM    = 103,         /* Protocol Independent Multicast       */
      45             : 
      46             :   IPPROTO_COMP   = 108,                /* Compression Header protocol */
      47             :   IPPROTO_SCTP   = 132,         /* Stream Control Transport Protocol    */
      48             :   IPPROTO_UDPLITE = 136,        /* UDP-Lite (RFC 3828)                  */
      49             : 
      50             :   IPPROTO_RAW    = 255,         /* Raw IP packets                       */
      51             :   IPPROTO_MAX
      52             : };
      53             : 
      54             : 
      55             : /* Internet address. */
      56             : struct in_addr {
      57             :         __be32  s_addr;
      58             : };
      59             : 
      60             : #define IP_TOS          1
      61             : #define IP_TTL          2
      62             : #define IP_HDRINCL      3
      63             : #define IP_OPTIONS      4
      64             : #define IP_ROUTER_ALERT 5
      65             : #define IP_RECVOPTS     6
      66             : #define IP_RETOPTS      7
      67             : #define IP_PKTINFO      8
      68             : #define IP_PKTOPTIONS   9
      69             : #define IP_MTU_DISCOVER 10
      70             : #define IP_RECVERR      11
      71             : #define IP_RECVTTL      12
      72             : #define IP_RECVTOS      13
      73             : #define IP_MTU          14
      74             : #define IP_FREEBIND     15
      75             : #define IP_IPSEC_POLICY 16
      76             : #define IP_XFRM_POLICY  17
      77             : #define IP_PASSSEC      18
      78             : #define IP_TRANSPARENT  19
      79             : 
      80             : /* BSD compatibility */
      81             : #define IP_RECVRETOPTS  IP_RETOPTS
      82             : 
      83             : /* TProxy original addresses */
      84             : #define IP_ORIGDSTADDR       20
      85             : #define IP_RECVORIGDSTADDR   IP_ORIGDSTADDR
      86             : 
      87             : /* IP_MTU_DISCOVER values */
      88             : #define IP_PMTUDISC_DONT                0       /* Never send DF frames */
      89             : #define IP_PMTUDISC_WANT                1       /* Use per route hints  */
      90             : #define IP_PMTUDISC_DO                  2       /* Always DF            */
      91             : #define IP_PMTUDISC_PROBE               3       /* Ignore dst pmtu      */
      92             : 
      93             : #define IP_MULTICAST_IF                 32
      94             : #define IP_MULTICAST_TTL                33
      95             : #define IP_MULTICAST_LOOP               34
      96             : #define IP_ADD_MEMBERSHIP               35
      97             : #define IP_DROP_MEMBERSHIP              36
      98             : #define IP_UNBLOCK_SOURCE               37
      99             : #define IP_BLOCK_SOURCE                 38
     100             : #define IP_ADD_SOURCE_MEMBERSHIP        39
     101             : #define IP_DROP_SOURCE_MEMBERSHIP       40
     102             : #define IP_MSFILTER                     41
     103             : #define MCAST_JOIN_GROUP                42
     104             : #define MCAST_BLOCK_SOURCE              43
     105             : #define MCAST_UNBLOCK_SOURCE            44
     106             : #define MCAST_LEAVE_GROUP               45
     107             : #define MCAST_JOIN_SOURCE_GROUP         46
     108             : #define MCAST_LEAVE_SOURCE_GROUP        47
     109             : #define MCAST_MSFILTER                  48
     110             : #define IP_MULTICAST_ALL                49
     111             : 
     112             : #define MCAST_EXCLUDE   0
     113             : #define MCAST_INCLUDE   1
     114             : 
     115             : /* These need to appear somewhere around here */
     116             : #define IP_DEFAULT_MULTICAST_TTL        1
     117             : #define IP_DEFAULT_MULTICAST_LOOP       1
     118             : 
     119             : /* Request struct for multicast socket ops */
     120             : 
     121             : struct ip_mreq  {
     122             :         struct in_addr imr_multiaddr;   /* IP multicast address of group */
     123             :         struct in_addr imr_interface;   /* local IP address of interface */
     124             : };
     125             : 
     126             : struct ip_mreqn {
     127             :         struct in_addr  imr_multiaddr;          /* IP multicast address of group */
     128             :         struct in_addr  imr_address;            /* local IP address of interface */
     129             :         int             imr_ifindex;            /* Interface index */
     130             : };
     131             : 
     132             : struct ip_mreq_source {
     133             :         __be32          imr_multiaddr;
     134             :         __be32          imr_interface;
     135             :         __be32          imr_sourceaddr;
     136             : };
     137             : 
     138             : struct ip_msfilter {
     139             :         __be32          imsf_multiaddr;
     140             :         __be32          imsf_interface;
     141             :         __u32           imsf_fmode;
     142             :         __u32           imsf_numsrc;
     143             :         __be32          imsf_slist[1];
     144             : };
     145             : 
     146             : #define IP_MSFILTER_SIZE(numsrc) \
     147             :         (sizeof(struct ip_msfilter) - sizeof(__u32) \
     148             :         + (numsrc) * sizeof(__u32))
     149             : 
     150             : struct group_req {
     151             :         __u32                            gr_interface;  /* interface index */
     152             :         struct __kernel_sockaddr_storage gr_group;      /* group address */
     153             : };
     154             : 
     155             : struct group_source_req {
     156             :         __u32                            gsr_interface; /* interface index */
     157             :         struct __kernel_sockaddr_storage gsr_group;     /* group address */
     158             :         struct __kernel_sockaddr_storage gsr_source;    /* source address */
     159             : };
     160             : 
     161             : struct group_filter {
     162             :         __u32                            gf_interface;  /* interface index */
     163             :         struct __kernel_sockaddr_storage gf_group;      /* multicast address */
     164             :         __u32                            gf_fmode;      /* filter mode */
     165             :         __u32                            gf_numsrc;     /* number of sources */
     166             :         struct __kernel_sockaddr_storage gf_slist[1];   /* interface index */
     167             : };
     168             : 
     169             : #define GROUP_FILTER_SIZE(numsrc) \
     170             :         (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \
     171             :         + (numsrc) * sizeof(struct __kernel_sockaddr_storage))
     172             : 
     173             : struct in_pktinfo {
     174             :         int             ipi_ifindex;
     175             :         struct in_addr  ipi_spec_dst;
     176             :         struct in_addr  ipi_addr;
     177             : };
     178             : 
     179             : /* Structure describing an Internet (IP) socket address. */
     180             : #define __SOCK_SIZE__   16              /* sizeof(struct sockaddr)      */
     181             : struct sockaddr_in {
     182             :   sa_family_t           sin_family;     /* Address family               */
     183             :   __be16                sin_port;       /* Port number                  */
     184             :   struct in_addr        sin_addr;       /* Internet address             */
     185             : 
     186             :   /* Pad to size of `struct sockaddr'. */
     187             :   unsigned char         __pad[__SOCK_SIZE__ - sizeof(short int) -
     188             :                         sizeof(unsigned short int) - sizeof(struct in_addr)];
     189             : };
     190             : #define sin_zero        __pad           /* for BSD UNIX comp. -FvK      */
     191             : 
     192             : 
     193             : /*
     194             :  * Definitions of the bits in an Internet address integer.
     195             :  * On subnets, host and network parts are found according
     196             :  * to the subnet mask, not these masks.
     197             :  */
     198             : #define IN_CLASSA(a)            ((((long int) (a)) & 0x80000000) == 0)
     199             : #define IN_CLASSA_NET           0xff000000
     200             : #define IN_CLASSA_NSHIFT        24
     201             : #define IN_CLASSA_HOST          (0xffffffff & ~IN_CLASSA_NET)
     202             : #define IN_CLASSA_MAX           128
     203             : 
     204             : #define IN_CLASSB(a)            ((((long int) (a)) & 0xc0000000) == 0x80000000)
     205             : #define IN_CLASSB_NET           0xffff0000
     206             : #define IN_CLASSB_NSHIFT        16
     207             : #define IN_CLASSB_HOST          (0xffffffff & ~IN_CLASSB_NET)
     208             : #define IN_CLASSB_MAX           65536
     209             : 
     210             : #define IN_CLASSC(a)            ((((long int) (a)) & 0xe0000000) == 0xc0000000)
     211             : #define IN_CLASSC_NET           0xffffff00
     212             : #define IN_CLASSC_NSHIFT        8
     213             : #define IN_CLASSC_HOST          (0xffffffff & ~IN_CLASSC_NET)
     214             : 
     215             : #define IN_CLASSD(a)            ((((long int) (a)) & 0xf0000000) == 0xe0000000)
     216             : #define IN_MULTICAST(a)         IN_CLASSD(a)
     217             : #define IN_MULTICAST_NET        0xF0000000
     218             : 
     219             : #define IN_EXPERIMENTAL(a)      ((((long int) (a)) & 0xf0000000) == 0xf0000000)
     220             : #define IN_BADCLASS(a)          IN_EXPERIMENTAL((a))
     221             : 
     222             : /* Address to accept any incoming messages. */
     223             : #define INADDR_ANY              ((unsigned long int) 0x00000000)
     224             : 
     225             : /* Address to send to all hosts. */
     226             : #define INADDR_BROADCAST        ((unsigned long int) 0xffffffff)
     227             : 
     228             : /* Address indicating an error return. */
     229             : #define INADDR_NONE             ((unsigned long int) 0xffffffff)
     230             : 
     231             : /* Network number for local host loopback. */
     232             : #define IN_LOOPBACKNET          127
     233             : 
     234             : /* Address to loopback in software to local host.  */
     235             : #define INADDR_LOOPBACK         0x7f000001      /* 127.0.0.1   */
     236             : #define IN_LOOPBACK(a)          ((((long int) (a)) & 0xff000000) == 0x7f000000)
     237             : 
     238             : /* Defines for Multicast INADDR */
     239             : #define INADDR_UNSPEC_GROUP     0xe0000000U     /* 224.0.0.0   */
     240             : #define INADDR_ALLHOSTS_GROUP   0xe0000001U     /* 224.0.0.1   */
     241             : #define INADDR_ALLRTRS_GROUP    0xe0000002U     /* 224.0.0.2 */
     242             : #define INADDR_MAX_LOCAL_GROUP  0xe00000ffU     /* 224.0.0.255 */
     243             : 
     244             : 
     245             : /* <asm/byteorder.h> contains the htonl type stuff.. */
     246             : #include <asm/byteorder.h> 
     247             : 
     248             : #ifdef __KERNEL__
     249             : 
     250             : static inline bool ipv4_is_loopback(__be32 addr)
     251             : {
     252             :         return (addr & htonl(0xff000000)) == htonl(0x7f000000);
     253             : }
     254             : 
     255             : static inline bool ipv4_is_multicast(__be32 addr)
     256             : {
     257             :         return (addr & htonl(0xf0000000)) == htonl(0xe0000000);
     258             : }
     259             : 
     260             : static inline bool ipv4_is_local_multicast(__be32 addr)
     261             : {
     262             :         return (addr & htonl(0xffffff00)) == htonl(0xe0000000);
     263             : }
     264             : 
     265             : static inline bool ipv4_is_lbcast(__be32 addr)
     266             : {
     267             :         /* limited broadcast */
     268             :         return addr == htonl(INADDR_BROADCAST);
     269             : }
     270             : 
     271             : static inline bool ipv4_is_zeronet(__be32 addr)
     272             : {
     273             :         return (addr & htonl(0xff000000)) == htonl(0x00000000);
     274             : }
     275             : 
     276             : /* Special-Use IPv4 Addresses (RFC3330) */
     277             : 
     278             : static inline bool ipv4_is_private_10(__be32 addr)
     279             : {
     280             :         return (addr & htonl(0xff000000)) == htonl(0x0a000000);
     281             : }
     282             : 
     283             : static inline bool ipv4_is_private_172(__be32 addr)
     284             : {
     285             :         return (addr & htonl(0xfff00000)) == htonl(0xac100000);
     286             : }
     287             : 
     288             : static inline bool ipv4_is_private_192(__be32 addr)
     289             : {
     290             :         return (addr & htonl(0xffff0000)) == htonl(0xc0a80000);
     291             : }
     292             : 
     293             : static inline bool ipv4_is_linklocal_169(__be32 addr)
     294             : {
     295             :         return (addr & htonl(0xffff0000)) == htonl(0xa9fe0000);
     296             : }
     297             : 
     298             : static inline bool ipv4_is_anycast_6to4(__be32 addr)
     299             : {
     300             :         return (addr & htonl(0xffffff00)) == htonl(0xc0586300);
     301             : }
     302             : 
     303             : static inline bool ipv4_is_test_192(__be32 addr)
     304             : {
     305             :         return (addr & htonl(0xffffff00)) == htonl(0xc0000200);
     306             : }
     307             : 
     308             : static inline bool ipv4_is_test_198(__be32 addr)
     309             : {
     310             :         return (addr & htonl(0xfffe0000)) == htonl(0xc6120000);
     311             : }
     312           2 : #endif
     313             : 
     314             : #endif  /* _LINUX_IN_H */

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