reactos/drivers/net/packet/win_bpf.h

   1 /*-
   2  * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
   3  *  The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from the Stanford/CMU enet packet filter,
   6  * (net/enet.c) distributed as part of 4.3BSD, and code contributed
   7  * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence
   8  * Berkeley Laboratory.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  *
  38  *      @(#)bpf.h       7.1 (Berkeley) 5/7/91
  39  *
  40  * @(#) $Header: /cygdrive/c/RCVS/CVS/ReactOS/reactos/drivers/net/packet/win_bpf.h,v 1.3 2002/12/21 04:46:09 robd Exp $ (LBL)
  41  */
  42
  43 #ifndef BPF_MAJOR_VERSION
  44
  45 /* BSD style release date */
  46 #define BPF_RELEASE 199606
  47
  48 typedef UCHAR u_char;
  49 typedef USHORT u_short;
  50 typedef ULONG u_int;
  51 typedef LONG bpf_int32;
  52 typedef ULONG bpf_u_int32;
  53 typedef ULONG u_int32;
  54
  55 #define BPF_MAXINSNS 512
  56 #define BPF_MAXBUFSIZE 0x8000
  57 #define BPF_MINBUFSIZE 32
  58
  59 #include "time_calls.h"
  60
  61 /*
  62  * The instruction data structure.
  63  */
  64 struct bpf_insn {
  65     u_short code;
  66     u_char  jt;
  67     u_char  jf;
  68     bpf_int32 k;
  69 };
  70
  71 /*
  72  *  Structure for BIOCSETF.
  73  */
  74 struct bpf_program {
  75     u_int bf_len;
  76     struct bpf_insn *bf_insns;
  77 };
  78
  79 /*
  80  * Struct returned by BIOCGSTATS.
  81  */
  82 struct bpf_stat {
  83     u_int bs_recv;      /* number of packets received */
  84     u_int bs_drop;      /* number of packets dropped */
  85 };
  86
  87 /*
  88  * Struct return by BIOCVERSION.  This represents the version number of
  89  * the filter language described by the instruction encodings below.
  90  * bpf understands a program iff kernel_major == filter_major &&
  91  * kernel_minor >= filter_minor, that is, if the value returned by the
  92  * running kernel has the same major number and a minor number equal
  93  * equal to or less than the filter being downloaded.  Otherwise, the
  94  * results are undefined, meaning an error may be returned or packets
  95  * may be accepted haphazardly.
  96  * It has nothing to do with the source code version.
  97  */
  98 struct bpf_version {
  99     u_short bv_major;
 100     u_short bv_minor;
 101 };
 102 /* Current version number of filter architecture. */
 103 #define BPF_MAJOR_VERSION 1
 104 #define BPF_MINOR_VERSION 1
 105
 106
 107 /*
 108  * Structure prepended to each packet.
 109  */
 110 struct bpf_hdr {
 111     struct timeval  bh_tstamp;  /* time stamp */
 112     bpf_u_int32 bh_caplen;  /* length of captured portion */
 113     bpf_u_int32 bh_datalen; /* original length of packet */
 114     u_short     bh_hdrlen;  /* length of bpf header (this struct
 115                        plus alignment padding) */
 116 };
 117
 118 /*
 119  * Data-link level type codes.
 120  */
 121
 122 /*
 123  * These are the types that are the same on all platforms; on other
 124  * platforms, a <net/bpf.h> should be supplied that defines the additional
 125  * DLT_* codes appropriately for that platform (the BSDs, for example,
 126  * should not just pick up this version of "bpf.h"; they should also define
 127  * the additional DLT_* codes used by their kernels, as well as the values
 128  * defined here - and, if the values they use for particular DLT_ types
 129  * differ from those here, they should use their values, not the ones
 130  * here).
 131  */
 132 #define DLT_NULL    0   /* no link-layer encapsulation */
 133 #define DLT_EN10MB  1   /* Ethernet (10Mb) */
 134 #define DLT_EN3MB   2   /* Experimental Ethernet (3Mb) */
 135 #define DLT_AX25    3   /* Amateur Radio AX.25 */
 136 #define DLT_PRONET  4   /* Proteon ProNET Token Ring */
 137 #define DLT_CHAOS   5   /* Chaos */
 138 #define DLT_IEEE802 6   /* IEEE 802 Networks */
 139 #define DLT_ARCNET  7   /* ARCNET */
 140 #define DLT_SLIP    8   /* Serial Line IP */
 141 #define DLT_PPP     9   /* Point-to-point Protocol */
 142 #define DLT_FDDI    10  /* FDDI */
 143
 144 /*
 145  * These are values from the traditional libpcap "bpf.h".
 146  * Ports of this to particular platforms should replace these definitions
 147  * with the ones appropriate to that platform, if the values are
 148  * different on that platform.
 149  */
 150 #define DLT_ATM_RFC1483 11  /* LLC/SNAP encapsulated atm */
 151 #define DLT_RAW     12  /* raw IP */
 152
 153 /*
 154  * These are values from BSD/OS's "bpf.h".
 155  * These are not the same as the values from the traditional libpcap
 156  * "bpf.h"; however, these values shouldn't be generated by any
 157  * OS other than BSD/OS, so the correct values to use here are the
 158  * BSD/OS values.
 159  *
 160  * Platforms that have already assigned these values to other
 161  * DLT_ codes, however, should give these codes the values
 162  * from that platform, so that programs that use these codes will
 163  * continue to compile - even though they won't correctly read
 164  * files of these types.
 165  */
 166 #define DLT_SLIP_BSDOS  15  /* BSD/OS Serial Line IP */
 167 #define DLT_PPP_BSDOS   16  /* BSD/OS Point-to-point Protocol */
 168
 169 #define DLT_ATM_CLIP    19  /* Linux Classical-IP over ATM */
 170
 171 /*
 172  * This value is defined by NetBSD; other platforms should refrain from
 173  * using it for other purposes, so that NetBSD savefiles with a link
 174  * type of 50 can be read as this type on all platforms.
 175  */
 176 #define DLT_PPP_SERIAL  50  /* PPP over serial with HDLC encapsulation */
 177
 178 /*
 179  * This value was defined by libpcap 0.5; platforms that have defined
 180  * it with a different value should define it here with that value -
 181  * a link type of 104 in a save file will be mapped to DLT_C_HDLC,
 182  * whatever value that happens to be, so programs will correctly
 183  * handle files with that link type regardless of the value of
 184  * DLT_C_HDLC.
 185  *
 186  * The name DLT_C_HDLC was used by BSD/OS; we use that name for source
 187  * compatibility with programs written for BSD/OS.
 188  *
 189  * libpcap 0.5 defined it as DLT_CHDLC; we define DLT_CHDLC as well,
 190  * for source compatibility with programs written for libpcap 0.5.
 191  */
 192 #define DLT_C_HDLC  104 /* Cisco HDLC */
 193 #define DLT_CHDLC   DLT_C_HDLC
 194
 195 /*
 196  * Reserved for future use.
 197  * Do not pick other numerical value for these unless you have also
 198  * picked up the tcpdump.org top-of-CVS-tree version of "savefile.c",
 199  * which will arrange that capture files for these DLT_ types have
 200  * the same "network" value on all platforms, regardless of what
 201  * value is chosen for their DLT_ type (thus allowing captures made
 202  * on one platform to be read on other platforms, even if the two
 203  * platforms don't use the same numerical values for all DLT_ types).
 204  */
 205 #define DLT_IEEE802_11  105 /* IEEE 802.11 wireless */
 206
 207 /*
 208  * Values between 106 and 107 are used in capture file headers as
 209  * link-layer types corresponding to DLT_ types that might differ
 210  * between platforms; don't use those values for new DLT_ new types.
 211  */
 212
 213 /*
 214  * OpenBSD DLT_LOOP, for loopback devices; it's like DLT_NULL, except
 215  * that the AF_ type in the link-layer header is in network byte order.
 216  *
 217  * OpenBSD defines it as 12, but that collides with DLT_RAW, so we
 218  * define it as 108 here.  If OpenBSD picks up this file, it should
 219  * define DLT_LOOP as 12 in its version, as per the comment above -
 220  * and should not use 108 for any purpose.
 221  */
 222 #define DLT_LOOP    108
 223
 224 /*
 225  * Values between 109 and 112 are used in capture file headers as
 226  * link-layer types corresponding to DLT_ types that might differ
 227  * between platforms; don't use those values for new DLT_ new types.
 228  */
 229
 230 /*
 231  * This is for Linux cooked sockets.
 232  */
 233 #define DLT_LINUX_SLL   113
 234
 235 /*
 236  * The instruction encodings.
 237  */
 238 /* instruction classes */
 239 #define BPF_CLASS(code) ((code) & 0x07)
 240 #define     BPF_LD      0x00
 241 #define     BPF_LDX     0x01
 242 #define     BPF_ST      0x02
 243 #define     BPF_STX     0x03
 244 #define     BPF_ALU     0x04
 245 #define     BPF_JMP     0x05
 246 #define     BPF_RET     0x06
 247 #define     BPF_MISC    0x07
 248
 249 /* ld/ldx fields */
 250 #define BPF_SIZE(code)  ((code) & 0x18)
 251 #define     BPF_W       0x00
 252 #define     BPF_H       0x08
 253 #define     BPF_B       0x10
 254 #define BPF_MODE(code)  ((code) & 0xe0)
 255 #define     BPF_IMM     0x00
 256 #define     BPF_ABS     0x20
 257 #define     BPF_IND     0x40
 258 #define     BPF_MEM     0x60
 259 #define     BPF_LEN     0x80
 260 #define     BPF_MSH     0xa0
 261
 262 /* alu/jmp fields */
 263 #define BPF_OP(code)    ((code) & 0xf0)
 264 #define     BPF_ADD     0x00
 265 #define     BPF_SUB     0x10
 266 #define     BPF_MUL     0x20
 267 #define     BPF_DIV     0x30
 268 #define     BPF_OR      0x40
 269 #define     BPF_AND     0x50
 270 #define     BPF_LSH     0x60
 271 #define     BPF_RSH     0x70
 272 #define     BPF_NEG     0x80
 273 #define     BPF_JA      0x00
 274 #define     BPF_JEQ     0x10
 275 #define     BPF_JGT     0x20
 276 #define     BPF_JGE     0x30
 277 #define     BPF_JSET    0x40
 278 #define BPF_SRC(code)   ((code) & 0x08)
 279 #define     BPF_K       0x00
 280 #define     BPF_X       0x08
 281
 282 /* ret - BPF_K and BPF_X also apply */
 283 #define BPF_RVAL(code)  ((code) & 0x18)
 284 #define     BPF_A       0x10
 285
 286 /* misc */
 287 #define BPF_MISCOP(code) ((code) & 0xf8)
 288 #define     BPF_TAX     0x00
 289 #define     BPF_TXA     0x80
 290
 291 /* TME instructions */
 292 #define     BPF_TME                 0x08
 293
 294 #define     BPF_LOOKUP              0x90
 295 #define     BPF_EXECUTE             0xa0
 296 #define     BPF_INIT                0xb0
 297 #define     BPF_VALIDATE            0xc0
 298 #define     BPF_SET_ACTIVE          0xd0
 299 #define     BPF_RESET               0xe0
 300 #define     BPF_SET_MEMORY          0x80
 301 #define     BPF_GET_REGISTER_VALUE  0x70
 302 #define     BPF_SET_REGISTER_VALUE  0x60
 303 #define     BPF_SET_WORKING         0x50
 304 #define     BPF_SET_ACTIVE_READ     0x40
 305 #define     BPF_SET_AUTODELETION    0x30
 306 #define     BPF_SEPARATION          0xff
 307
 308 #define     BPF_MEM_EX_IMM  0xc0
 309 #define     BPF_MEM_EX_IND  0xe0
 310 /*used for ST */
 311 #define     BPF_MEM_EX      0xc0
 312
 313
 314 /*
 315  * Macros for insn array initializers.
 316  */
 317 #define BPF_STMT(code, k) { (u_short)(code), 0, 0, k }
 318 #define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k }
 319
 320 /*
 321  * Number of scratch memory words (for BPF_LD|BPF_MEM and BPF_ST).
 322  */
 323 #define BPF_MEMWORDS 16
 324
 325 #endif