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TOMOYO Linux Cross Reference
Linux/include/linux/in.h

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Diff markup

Differences between /include/linux/in.h (Version linux-4.17.19) and /include/linux/in.h (Version linux-2.4.37.11)


  1 /*                                                  1 /*
  2  * INET         An implementation of the TCP/I      2  * INET         An implementation of the TCP/IP protocol suite for the LINUX
  3  *              operating system.  INET is imp      3  *              operating system.  INET is implemented using the  BSD Socket
  4  *              interface as the means of comm      4  *              interface as the means of communication with the user level.
  5  *                                                  5  *
  6  *              Definitions of the Internet Pr      6  *              Definitions of the Internet Protocol.
  7  *                                                  7  *
  8  * Version:     @(#)in.h        1.0.1   04/21/      8  * Version:     @(#)in.h        1.0.1   04/21/93
  9  *                                                  9  *
 10  * Authors:     Original taken from the GNU Pr     10  * Authors:     Original taken from the GNU Project <netinet/in.h> file.
 11  *              Fred N. van Kempen, <waltje@uW     11  *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
 12  *                                                 12  *
 13  *              This program is free software;     13  *              This program is free software; you can redistribute it and/or
 14  *              modify it under the terms of t     14  *              modify it under the terms of the GNU General Public License
 15  *              as published by the Free Softw     15  *              as published by the Free Software Foundation; either version
 16  *              2 of the License, or (at your      16  *              2 of the License, or (at your option) any later version.
 17  */                                                17  */
 18 #ifndef _LINUX_IN_H                                18 #ifndef _LINUX_IN_H
 19 #define _LINUX_IN_H                                19 #define _LINUX_IN_H
 20                                                    20 
                                                   >>  21 #include <linux/types.h>
                                                   >>  22 #include <linux/socket.h>
 21                                                    23 
 22 #include <linux/errno.h>                       !!  24 /* Standard well-defined IP protocols.  */
 23 #include <uapi/linux/in.h>                     !!  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_RSVP = 46,            /* RSVP protocol                        */
                                                   >>  36   IPPROTO_GRE = 47,             /* Cisco GRE tunnels (rfc 1701,1702)    */
                                                   >>  37 
                                                   >>  38   IPPROTO_IPV6   = 41,          /* IPv6-in-IPv4 tunnelling              */
                                                   >>  39 
                                                   >>  40   IPPROTO_PIM    = 103,         /* Protocol Independent Multicast       */
                                                   >>  41 
                                                   >>  42   IPPROTO_ESP = 50,            /* Encapsulation Security Payload protocol */
                                                   >>  43   IPPROTO_AH = 51,             /* Authentication Header protocol       */
                                                   >>  44   IPPROTO_COMP   = 108,                /* Compression Header protocol */
                                                   >>  45   IPPROTO_SCTP   = 132,         /* Stream Control Transport Protocol    */
                                                   >>  46 
                                                   >>  47   IPPROTO_RAW    = 255,         /* Raw IP packets                       */
                                                   >>  48   IPPROTO_MAX
                                                   >>  49 };
                                                   >>  50 
                                                   >>  51 
                                                   >>  52 /* Internet address. */
                                                   >>  53 struct in_addr {
                                                   >>  54         __u32   s_addr;
                                                   >>  55 };
                                                   >>  56 
                                                   >>  57 #define IP_TOS          1
                                                   >>  58 #define IP_TTL          2
                                                   >>  59 #define IP_HDRINCL      3
                                                   >>  60 #define IP_OPTIONS      4
                                                   >>  61 #define IP_ROUTER_ALERT 5
                                                   >>  62 #define IP_RECVOPTS     6
                                                   >>  63 #define IP_RETOPTS      7
                                                   >>  64 #define IP_PKTINFO      8
                                                   >>  65 #define IP_PKTOPTIONS   9
                                                   >>  66 #define IP_MTU_DISCOVER 10
                                                   >>  67 #define IP_RECVERR      11
                                                   >>  68 #define IP_RECVTTL      12
                                                   >>  69 #define IP_RECVTOS      13
                                                   >>  70 #define IP_MTU          14
                                                   >>  71 #define IP_FREEBIND     15
                                                   >>  72 
                                                   >>  73 /* BSD compatibility */
                                                   >>  74 #define IP_RECVRETOPTS  IP_RETOPTS
                                                   >>  75 
                                                   >>  76 /* IP_MTU_DISCOVER values */
                                                   >>  77 #define IP_PMTUDISC_DONT                0       /* Never send DF frames */
                                                   >>  78 #define IP_PMTUDISC_WANT                1       /* Use per route hints  */
                                                   >>  79 #define IP_PMTUDISC_DO                  2       /* Always DF            */
                                                   >>  80 
                                                   >>  81 #define IP_MULTICAST_IF                 32
                                                   >>  82 #define IP_MULTICAST_TTL                33
                                                   >>  83 #define IP_MULTICAST_LOOP               34
                                                   >>  84 #define IP_ADD_MEMBERSHIP               35
                                                   >>  85 #define IP_DROP_MEMBERSHIP              36
                                                   >>  86 #define IP_UNBLOCK_SOURCE               37
                                                   >>  87 #define IP_BLOCK_SOURCE                 38
                                                   >>  88 #define IP_ADD_SOURCE_MEMBERSHIP        39
                                                   >>  89 #define IP_DROP_SOURCE_MEMBERSHIP       40
                                                   >>  90 #define IP_MSFILTER                     41
                                                   >>  91 #define MCAST_JOIN_GROUP                42
                                                   >>  92 #define MCAST_BLOCK_SOURCE              43
                                                   >>  93 #define MCAST_UNBLOCK_SOURCE            44
                                                   >>  94 #define MCAST_LEAVE_GROUP               45
                                                   >>  95 #define MCAST_JOIN_SOURCE_GROUP         46
                                                   >>  96 #define MCAST_LEAVE_SOURCE_GROUP        47
                                                   >>  97 #define MCAST_MSFILTER                  48
                                                   >>  98 
                                                   >>  99 #define MCAST_EXCLUDE   0
                                                   >> 100 #define MCAST_INCLUDE   1
                                                   >> 101 
                                                   >> 102 /* These need to appear somewhere around here */
                                                   >> 103 #define IP_DEFAULT_MULTICAST_TTL        1
                                                   >> 104 #define IP_DEFAULT_MULTICAST_LOOP       1
                                                   >> 105 
                                                   >> 106 /* Request struct for multicast socket ops */
                                                   >> 107 
                                                   >> 108 struct ip_mreq 
                                                   >> 109 {
                                                   >> 110         struct in_addr imr_multiaddr;   /* IP multicast address of group */
                                                   >> 111         struct in_addr imr_interface;   /* local IP address of interface */
                                                   >> 112 };
                                                   >> 113 
                                                   >> 114 struct ip_mreqn
                                                   >> 115 {
                                                   >> 116         struct in_addr  imr_multiaddr;          /* IP multicast address of group */
                                                   >> 117         struct in_addr  imr_address;            /* local IP address of interface */
                                                   >> 118         int             imr_ifindex;            /* Interface index */
                                                   >> 119 };
                                                   >> 120 
                                                   >> 121 struct ip_mreq_source {
                                                   >> 122         __u32           imr_multiaddr;
                                                   >> 123         __u32           imr_interface;
                                                   >> 124         __u32           imr_sourceaddr;
                                                   >> 125 };
                                                   >> 126 
                                                   >> 127 struct ip_msfilter {
                                                   >> 128         __u32           imsf_multiaddr;
                                                   >> 129         __u32           imsf_interface;
                                                   >> 130         __u32           imsf_fmode;
                                                   >> 131         __u32           imsf_numsrc;
                                                   >> 132         __u32           imsf_slist[1];
                                                   >> 133 };
                                                   >> 134 
                                                   >> 135 #define IP_MSFILTER_SIZE(numsrc) \
                                                   >> 136         (sizeof(struct ip_msfilter) - sizeof(__u32) \
                                                   >> 137         + (numsrc) * sizeof(__u32))
                                                   >> 138 
                                                   >> 139 struct group_req
                                                   >> 140 {
                                                   >> 141         __u32                            gr_interface;  /* interface index */
                                                   >> 142         struct __kernel_sockaddr_storage gr_group;      /* group address */
                                                   >> 143 };
                                                   >> 144 
                                                   >> 145 struct group_source_req
                                                   >> 146 {
                                                   >> 147         __u32                            gsr_interface; /* interface index */
                                                   >> 148         struct __kernel_sockaddr_storage gsr_group;     /* group address */
                                                   >> 149         struct __kernel_sockaddr_storage gsr_source;    /* source address */
                                                   >> 150 };
                                                   >> 151 
                                                   >> 152 struct group_filter
                                                   >> 153 {
                                                   >> 154         __u32                            gf_interface;  /* interface index */
                                                   >> 155         struct __kernel_sockaddr_storage gf_group;      /* multicast address */
                                                   >> 156         __u32                            gf_fmode;      /* filter mode */
                                                   >> 157         __u32                            gf_numsrc;     /* number of sources */
                                                   >> 158         struct __kernel_sockaddr_storage gf_slist[1];   /* interface index */
                                                   >> 159 };
                                                   >> 160 
                                                   >> 161 #define GROUP_FILTER_SIZE(numsrc) \
                                                   >> 162         (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \
                                                   >> 163         + (numsrc) * sizeof(struct __kernel_sockaddr_storage))
                                                   >> 164 
                                                   >> 165 struct in_pktinfo
                                                   >> 166 {
                                                   >> 167         int             ipi_ifindex;
                                                   >> 168         struct in_addr  ipi_spec_dst;
                                                   >> 169         struct in_addr  ipi_addr;
                                                   >> 170 };
                                                   >> 171 
                                                   >> 172 /* Structure describing an Internet (IP) socket address. */
                                                   >> 173 #define __SOCK_SIZE__   16              /* sizeof(struct sockaddr)      */
                                                   >> 174 struct sockaddr_in {
                                                   >> 175   sa_family_t           sin_family;     /* Address family               */
                                                   >> 176   unsigned short int    sin_port;       /* Port number                  */
                                                   >> 177   struct in_addr        sin_addr;       /* Internet address             */
                                                   >> 178 
                                                   >> 179   /* Pad to size of `struct sockaddr'. */
                                                   >> 180   unsigned char         __pad[__SOCK_SIZE__ - sizeof(short int) -
                                                   >> 181                         sizeof(unsigned short int) - sizeof(struct in_addr)];
                                                   >> 182 };
                                                   >> 183 #define sin_zero        __pad           /* for BSD UNIX comp. -FvK      */
                                                   >> 184 
                                                   >> 185 
                                                   >> 186 /*
                                                   >> 187  * Definitions of the bits in an Internet address integer.
                                                   >> 188  * On subnets, host and network parts are found according
                                                   >> 189  * to the subnet mask, not these masks.
                                                   >> 190  */
                                                   >> 191 #define IN_CLASSA(a)            ((((long int) (a)) & 0x80000000) == 0)
                                                   >> 192 #define IN_CLASSA_NET           0xff000000
                                                   >> 193 #define IN_CLASSA_NSHIFT        24
                                                   >> 194 #define IN_CLASSA_HOST          (0xffffffff & ~IN_CLASSA_NET)
                                                   >> 195 #define IN_CLASSA_MAX           128
                                                   >> 196 
                                                   >> 197 #define IN_CLASSB(a)            ((((long int) (a)) & 0xc0000000) == 0x80000000)
                                                   >> 198 #define IN_CLASSB_NET           0xffff0000
                                                   >> 199 #define IN_CLASSB_NSHIFT        16
                                                   >> 200 #define IN_CLASSB_HOST          (0xffffffff & ~IN_CLASSB_NET)
                                                   >> 201 #define IN_CLASSB_MAX           65536
                                                   >> 202 
                                                   >> 203 #define IN_CLASSC(a)            ((((long int) (a)) & 0xe0000000) == 0xc0000000)
                                                   >> 204 #define IN_CLASSC_NET           0xffffff00
                                                   >> 205 #define IN_CLASSC_NSHIFT        8
                                                   >> 206 #define IN_CLASSC_HOST          (0xffffffff & ~IN_CLASSC_NET)
                                                   >> 207 
                                                   >> 208 #define IN_CLASSD(a)            ((((long int) (a)) & 0xf0000000) == 0xe0000000)
                                                   >> 209 #define IN_MULTICAST(a)         IN_CLASSD(a)
                                                   >> 210 #define IN_MULTICAST_NET        0xF0000000
                                                   >> 211 
                                                   >> 212 #define IN_EXPERIMENTAL(a)      ((((long int) (a)) & 0xf0000000) == 0xf0000000)
                                                   >> 213 #define IN_BADCLASS(a)          IN_EXPERIMENTAL((a))
                                                   >> 214 
                                                   >> 215 /* Address to accept any incoming messages. */
                                                   >> 216 #define INADDR_ANY              ((unsigned long int) 0x00000000)
                                                   >> 217 
                                                   >> 218 /* Address to send to all hosts. */
                                                   >> 219 #define INADDR_BROADCAST        ((unsigned long int) 0xffffffff)
                                                   >> 220 
                                                   >> 221 /* Address indicating an error return. */
                                                   >> 222 #define INADDR_NONE             ((unsigned long int) 0xffffffff)
                                                   >> 223 
                                                   >> 224 /* Network number for local host loopback. */
                                                   >> 225 #define IN_LOOPBACKNET          127
                                                   >> 226 
                                                   >> 227 /* Address to loopback in software to local host.  */
                                                   >> 228 #define INADDR_LOOPBACK         0x7f000001      /* 127.0.0.1   */
                                                   >> 229 #define IN_LOOPBACK(a)          ((((long int) (a)) & 0xff000000) == 0x7f000000)
                                                   >> 230 
                                                   >> 231 /* Defines for Multicast INADDR */
                                                   >> 232 #define INADDR_UNSPEC_GROUP     0xe0000000U     /* 224.0.0.0   */
                                                   >> 233 #define INADDR_ALLHOSTS_GROUP   0xe0000001U     /* 224.0.0.1   */
                                                   >> 234 #define INADDR_ALLRTRS_GROUP    0xe0000002U     /* 224.0.0.2 */
                                                   >> 235 #define INADDR_MAX_LOCAL_GROUP  0xe00000ffU     /* 224.0.0.255 */
                                                   >> 236 
                                                   >> 237 
                                                   >> 238 /* <asm/byteorder.h> contains the htonl type stuff.. */
                                                   >> 239 #include <asm/byteorder.h> 
                                                   >> 240 
                                                   >> 241 #ifdef __KERNEL__
                                                   >> 242 /* Some random defines to make it easier in the kernel.. */
                                                   >> 243 #define LOOPBACK(x)     (((x) & htonl(0xff000000)) == htonl(0x7f000000))
                                                   >> 244 #define MULTICAST(x)    (((x) & htonl(0xf0000000)) == htonl(0xe0000000))
                                                   >> 245 #define BADCLASS(x)     (((x) & htonl(0xf0000000)) == htonl(0xf0000000))
                                                   >> 246 #define ZERONET(x)      (((x) & htonl(0xff000000)) == htonl(0x00000000))
                                                   >> 247 #define LOCAL_MCAST(x)  (((x) & htonl(0xFFFFFF00)) == htonl(0xE0000000))
 24                                                   248 
 25 static inline int proto_ports_offset(int proto !! 249 #endif
 26 {                                              << 
 27         switch (proto) {                       << 
 28         case IPPROTO_TCP:                      << 
 29         case IPPROTO_UDP:                      << 
 30         case IPPROTO_DCCP:                     << 
 31         case IPPROTO_ESP:       /* SPI */      << 
 32         case IPPROTO_SCTP:                     << 
 33         case IPPROTO_UDPLITE:                  << 
 34                 return 0;                      << 
 35         case IPPROTO_AH:        /* SPI */      << 
 36                 return 4;                      << 
 37         default:                               << 
 38                 return -EINVAL;                << 
 39         }                                      << 
 40 }                                              << 
 41                                                << 
 42 static inline bool ipv4_is_loopback(__be32 add << 
 43 {                                              << 
 44         return (addr & htonl(0xff000000)) == h << 
 45 }                                              << 
 46                                                << 
 47 static inline bool ipv4_is_multicast(__be32 ad << 
 48 {                                              << 
 49         return (addr & htonl(0xf0000000)) == h << 
 50 }                                              << 
 51                                                << 
 52 static inline bool ipv4_is_local_multicast(__b << 
 53 {                                              << 
 54         return (addr & htonl(0xffffff00)) == h << 
 55 }                                              << 
 56                                                   250 
 57 static inline bool ipv4_is_lbcast(__be32 addr) << 
 58 {                                              << 
 59         /* limited broadcast */                << 
 60         return addr == htonl(INADDR_BROADCAST) << 
 61 }                                              << 
 62                                                << 
 63 static inline bool ipv4_is_zeronet(__be32 addr << 
 64 {                                              << 
 65         return (addr & htonl(0xff000000)) == h << 
 66 }                                              << 
 67                                                << 
 68 /* Special-Use IPv4 Addresses (RFC3330) */     << 
 69                                                << 
 70 static inline bool ipv4_is_private_10(__be32 a << 
 71 {                                              << 
 72         return (addr & htonl(0xff000000)) == h << 
 73 }                                              << 
 74                                                << 
 75 static inline bool ipv4_is_private_172(__be32  << 
 76 {                                              << 
 77         return (addr & htonl(0xfff00000)) == h << 
 78 }                                              << 
 79                                                << 
 80 static inline bool ipv4_is_private_192(__be32  << 
 81 {                                              << 
 82         return (addr & htonl(0xffff0000)) == h << 
 83 }                                              << 
 84                                                << 
 85 static inline bool ipv4_is_linklocal_169(__be3 << 
 86 {                                              << 
 87         return (addr & htonl(0xffff0000)) == h << 
 88 }                                              << 
 89                                                << 
 90 static inline bool ipv4_is_anycast_6to4(__be32 << 
 91 {                                              << 
 92         return (addr & htonl(0xffffff00)) == h << 
 93 }                                              << 
 94                                                << 
 95 static inline bool ipv4_is_test_192(__be32 add << 
 96 {                                              << 
 97         return (addr & htonl(0xffffff00)) == h << 
 98 }                                              << 
 99                                                << 
100 static inline bool ipv4_is_test_198(__be32 add << 
101 {                                              << 
102         return (addr & htonl(0xfffe0000)) == h << 
103 }                                              << 
104 #endif  /* _LINUX_IN_H */                         251 #endif  /* _LINUX_IN_H */
105                                                   252 

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