drivers/staging/rtl8712/ip.h

   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 for the IP protocol.
   7  *
   8  * Version:     @(#)ip.h        1.0.2   04/28/93
   9  *
  10  * Authors:     Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  11  *
  12  *              This program is free software; you can redistribute it and/or
  13  *              modify it under the terms of the GNU General Public License
  14  *              as published by the Free Software Foundation; either version
  15  *              2 of the License, or (at your option) any later version.
  16  */
  17 #ifndef _LINUX_IP_H
  18 #define _LINUX_IP_H
  19
  20 #include "rtl871x_byteorder.h"
  21
  22 /* SOL_IP socket options */
  23
  24 #define IPTOS_TOS_MASK          0x1E
  25 #define IPTOS_TOS(tos)          ((tos)&IPTOS_TOS_MASK)
  26 #define IPTOS_LOWDELAY          0x10
  27 #define IPTOS_THROUGHPUT        0x08
  28 #define IPTOS_RELIABILITY       0x04
  29 #define IPTOS_MINCOST           0x02
  30
  31 #define IPTOS_PREC_MASK         0xE0
  32 #define IPTOS_PREC(tos)         ((tos)&IPTOS_PREC_MASK)
  33 #define IPTOS_PREC_NETCONTROL           0xe0
  34 #define IPTOS_PREC_INTERNETCONTROL      0xc0
  35 #define IPTOS_PREC_CRITIC_ECP           0xa0
  36 #define IPTOS_PREC_FLASHOVERRIDE        0x80
  37 #define IPTOS_PREC_FLASH                0x60
  38 #define IPTOS_PREC_IMMEDIATE            0x40
  39 #define IPTOS_PREC_PRIORITY             0x20
  40 #define IPTOS_PREC_ROUTINE              0x00
  41
  42 /* IP options */
  43 #define IPOPT_COPY              0x80
  44 #define IPOPT_CLASS_MASK        0x60
  45 #define IPOPT_NUMBER_MASK       0x1f
  46
  47 #define IPOPT_COPIED(o)         ((o)&IPOPT_COPY)
  48 #define IPOPT_CLASS(o)          ((o)&IPOPT_CLASS_MASK)
  49 #define IPOPT_NUMBER(o)         ((o)&IPOPT_NUMBER_MASK)
  50
  51 #define IPOPT_CONTROL           0x00
  52 #define IPOPT_RESERVED1         0x20
  53 #define IPOPT_MEASUREMENT       0x40
  54 #define IPOPT_RESERVED2         0x60
  55
  56 #define IPOPT_END       (0 | IPOPT_CONTROL)
  57 #define IPOPT_NOOP      (1 | IPOPT_CONTROL)
  58 #define IPOPT_SEC       (2 | IPOPT_CONTROL|IPOPT_COPY)
  59 #define IPOPT_LSRR      (3 | IPOPT_CONTROL|IPOPT_COPY)
  60 #define IPOPT_TIMESTAMP (4 | IPOPT_MEASUREMENT)
  61 #define IPOPT_RR        (7 | IPOPT_CONTROL)
  62 #define IPOPT_SID       (8 | IPOPT_CONTROL | IPOPT_COPY)
  63 #define IPOPT_SSRR      (9 | IPOPT_CONTROL | IPOPT_COPY)
  64 #define IPOPT_RA        (20 | IPOPT_CONTROL | IPOPT_COPY)
  65
  66 #define IPVERSION       4
  67 #define MAXTTL          255
  68 #define IPDEFTTL        64
  69
  70 /* struct timestamp, struct route and MAX_ROUTES are removed.
  71  *
  72  * REASONS: it is clear that nobody used them because:
  73  * - MAX_ROUTES value was wrong.
  74  * - "struct route" was wrong.
  75  * - "struct timestamp" had fatally misaligned bitfields and was completely
  76  *   unusable.
  77  */
  78
  79 #define IPOPT_OPTVAL 0
  80 #define IPOPT_OLEN   1
  81 #define IPOPT_OFFSET 2
  82 #define IPOPT_MINOFF 4
  83 #define MAX_IPOPTLEN 40
  84 #define IPOPT_NOP IPOPT_NOOP
  85 #define IPOPT_EOL IPOPT_END
  86 #define IPOPT_TS  IPOPT_TIMESTAMP
  87
  88 #define IPOPT_TS_TSONLY         0               /* timestamps only */
  89 #define IPOPT_TS_TSANDADDR      1               /* timestamps and addresses */
  90 #define IPOPT_TS_PRESPEC        3               /* specified modules only */
  91
  92 struct ip_options {
  93   __u32         faddr;                          /* Saved first hop address */
  94   unsigned char optlen;
  95   unsigned char srr;
  96   unsigned char rr;
  97   unsigned char ts;
  98   unsigned char is_setbyuser:1, /* Set by setsockopt?                   */
  99                 is_data:1,      /* Options in __data, rather than skb   */
 100                 is_strictroute:1, /* Strict source route                */
 101                 srr_is_hit:1,   /* Packet destination addr was our one  */
 102                 is_changed:1,   /* IP checksum more not valid           */
 103                 rr_needaddr:1,  /* Need to record addr of outgoing dev  */
 104                 ts_needtime:1,  /* Need to record timestamp             */
 105                 ts_needaddr:1;  /* Need to record addr of outgoing dev  */
 106   unsigned char router_alert;
 107   unsigned char __pad1;
 108   unsigned char __pad2;
 109   unsigned char __data[0];
 110 };
 111
 112 #define optlength(opt) (sizeof(struct ip_options) + opt->optlen)
 113
 114 struct iphdr {
 115 #if defined(__LITTLE_ENDIAN_BITFIELD)
 116         __u8    ihl:4,
 117                 version:4;
 118 #elif defined(__BIG_ENDIAN_BITFIELD)
 119         __u8    version:4,
 120                 ihl:4;
 121 #else
 122 #error  "Please fix <asm/byteorder.h>"
 123 #endif
 124         __u8    tos;
 125         __u16   tot_len;
 126         __u16   id;
 127         __u16   frag_off;
 128         __u8    ttl;
 129         __u8    protocol;
 130         __u16   check;
 131         __u32   saddr;
 132         __u32   daddr;
 133         /*The options start here. */
 134 };
 135
 136 #endif  /* _LINUX_IP_H */
 137