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! 8: <h1>bpf.h</h1><div class="fragment"><pre>00001 <span class="comment">/*-</span>
! 9: 00002 <span class="comment"> * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997</span>
! 10: 00003 <span class="comment"> * The Regents of the University of California. All rights reserved.</span>
! 11: 00004 <span class="comment"> *</span>
! 12: 00005 <span class="comment"> * This code is derived from the Stanford/CMU enet packet filter,</span>
! 13: 00006 <span class="comment"> * (net/enet.c) distributed as part of 4.3BSD, and code contributed</span>
! 14: 00007 <span class="comment"> * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence </span>
! 15: 00008 <span class="comment"> * Berkeley Laboratory.</span>
! 16: 00009 <span class="comment"> *</span>
! 17: 00010 <span class="comment"> * Redistribution and use in source and binary forms, with or without</span>
! 18: 00011 <span class="comment"> * modification, are permitted provided that the following conditions</span>
! 19: 00012 <span class="comment"> * are met:</span>
! 20: 00013 <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span>
! 21: 00014 <span class="comment"> * notice, this list of conditions and the following disclaimer.</span>
! 22: 00015 <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright</span>
! 23: 00016 <span class="comment"> * notice, this list of conditions and the following disclaimer in the</span>
! 24: 00017 <span class="comment"> * documentation and/or other materials provided with the distribution.</span>
! 25: 00018 <span class="comment"> * 3. All advertising materials mentioning features or use of this software</span>
! 26: 00019 <span class="comment"> * must display the following acknowledgement:</span>
! 27: 00020 <span class="comment"> * This product includes software developed by the University of</span>
! 28: 00021 <span class="comment"> * California, Berkeley and its contributors.</span>
! 29: 00022 <span class="comment"> * 4. Neither the name of the University nor the names of its contributors</span>
! 30: 00023 <span class="comment"> * may be used to endorse or promote products derived from this software</span>
! 31: 00024 <span class="comment"> * without specific prior written permission.</span>
! 32: 00025 <span class="comment"> *</span>
! 33: 00026 <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND</span>
! 34: 00027 <span class="comment"> * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span>
! 35: 00028 <span class="comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span>
! 36: 00029 <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE</span>
! 37: 00030 <span class="comment"> * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL</span>
! 38: 00031 <span class="comment"> * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS</span>
! 39: 00032 <span class="comment"> * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)</span>
! 40: 00033 <span class="comment"> * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT</span>
! 41: 00034 <span class="comment"> * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY</span>
! 42: 00035 <span class="comment"> * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF</span>
! 43: 00036 <span class="comment"> * SUCH DAMAGE.</span>
! 44: 00037 <span class="comment"> *</span>
! 45: 00038 <span class="comment"> * @(#)bpf.h 7.1 (Berkeley) 5/7/91</span>
! 46: 00039 <span class="comment"> *</span>
! 47: 00040 <span class="comment"> * @(#) $Header: /usr/local/CVS/libnet/include/bpf.h,v 1.1.1.1 2003/06/26 21:55:10 route Exp $ (LBL)</span>
! 48: 00041 <span class="comment"> */</span>
! 49: 00042
! 50: 00043 <span class="preprocessor">#ifndef BPF_MAJOR_VERSION</span>
! 51: 00044 <span class="preprocessor"></span>
! 52: 00045 <span class="comment">/* BSD style release date */</span>
! 53: 00046 <span class="preprocessor">#define BPF_RELEASE 199606</span>
! 54: 00047 <span class="preprocessor"></span>
! 55: 00048 <span class="keyword">typedef</span> <span class="keywordtype">int</span> bpf_int32;
! 56: 00049 <span class="keyword">typedef</span> u_int bpf_u_int32;
! 57: 00050
! 58: 00051 <span class="comment">/*</span>
! 59: 00052 <span class="comment"> * Alignment macros. BPF_WORDALIGN rounds up to the next </span>
! 60: 00053 <span class="comment"> * even multiple of BPF_ALIGNMENT. </span>
! 61: 00054 <span class="comment"> */</span>
! 62: 00055 <span class="preprocessor">#define BPF_ALIGNMENT sizeof(bpf_int32)</span>
! 63: 00056 <span class="preprocessor"></span><span class="preprocessor">#define BPF_WORDALIGN(x) (((x)+(BPF_ALIGNMENT-1))&~(BPF_ALIGNMENT-1))</span>
! 64: 00057 <span class="preprocessor"></span>
! 65: 00058 <span class="preprocessor">#define BPF_MAXINSNS 512</span>
! 66: 00059 <span class="preprocessor"></span><span class="preprocessor">#define BPF_MAXBUFSIZE 0x8000</span>
! 67: 00060 <span class="preprocessor"></span><span class="preprocessor">#define BPF_MINBUFSIZE 32</span>
! 68: 00061 <span class="preprocessor"></span>
! 69: 00062 <span class="comment">/*</span>
! 70: 00063 <span class="comment"> * Structure for BIOCSETF.</span>
! 71: 00064 <span class="comment"> */</span>
! 72: 00065 <span class="keyword">struct </span>bpf_program {
! 73: 00066 u_int bf_len;
! 74: 00067 <span class="keyword">struct </span>bpf_insn *bf_insns;
! 75: 00068 };
! 76: 00069
! 77: 00070 <span class="comment">/*</span>
! 78: 00071 <span class="comment"> * Struct returned by BIOCGSTATS.</span>
! 79: 00072 <span class="comment"> */</span>
! 80: 00073 <span class="keyword">struct </span>bpf_stat {
! 81: 00074 u_int bs_recv; <span class="comment">/* number of packets received */</span>
! 82: 00075 u_int bs_drop; <span class="comment">/* number of packets dropped */</span>
! 83: 00076 };
! 84: 00077
! 85: 00078 <span class="comment">/*</span>
! 86: 00079 <span class="comment"> * Struct return by BIOCVERSION. This represents the version number of </span>
! 87: 00080 <span class="comment"> * the filter language described by the instruction encodings below.</span>
! 88: 00081 <span class="comment"> * bpf understands a program iff kernel_major == filter_major &&</span>
! 89: 00082 <span class="comment"> * kernel_minor >= filter_minor, that is, if the value returned by the</span>
! 90: 00083 <span class="comment"> * running kernel has the same major number and a minor number equal</span>
! 91: 00084 <span class="comment"> * equal to or less than the filter being downloaded. Otherwise, the</span>
! 92: 00085 <span class="comment"> * results are undefined, meaning an error may be returned or packets</span>
! 93: 00086 <span class="comment"> * may be accepted haphazardly.</span>
! 94: 00087 <span class="comment"> * It has nothing to do with the source code version.</span>
! 95: 00088 <span class="comment"> */</span>
! 96: 00089 <span class="keyword">struct </span>bpf_version {
! 97: 00090 u_short bv_major;
! 98: 00091 u_short bv_minor;
! 99: 00092 };
! 100: 00093 <span class="comment">/* Current version number of filter architecture. */</span>
! 101: 00094 <span class="preprocessor">#define BPF_MAJOR_VERSION 1</span>
! 102: 00095 <span class="preprocessor"></span><span class="preprocessor">#define BPF_MINOR_VERSION 1</span>
! 103: 00096 <span class="preprocessor"></span>
! 104: 00097 <span class="comment">/*</span>
! 105: 00098 <span class="comment"> * BPF ioctls</span>
! 106: 00099 <span class="comment"> *</span>
! 107: 00100 <span class="comment"> * The first set is for compatibility with Sun's pcc style</span>
! 108: 00101 <span class="comment"> * header files. If your using gcc, we assume that you</span>
! 109: 00102 <span class="comment"> * have run fixincludes so the latter set should work.</span>
! 110: 00103 <span class="comment"> */</span>
! 111: 00104 <span class="preprocessor">#if (defined(sun) || defined(ibm032)) && !defined(__GNUC__)</span>
! 112: 00105 <span class="preprocessor"></span><span class="preprocessor">#define BIOCGBLEN _IOR(B,102, u_int)</span>
! 113: 00106 <span class="preprocessor"></span><span class="preprocessor">#define BIOCSBLEN _IOWR(B,102, u_int)</span>
! 114: 00107 <span class="preprocessor"></span><span class="preprocessor">#define BIOCSETF _IOW(B,103, struct bpf_program)</span>
! 115: 00108 <span class="preprocessor"></span><span class="preprocessor">#define BIOCFLUSH _IO(B,104)</span>
! 116: 00109 <span class="preprocessor"></span><span class="preprocessor">#define BIOCPROMISC _IO(B,105)</span>
! 117: 00110 <span class="preprocessor"></span><span class="preprocessor">#define BIOCGDLT _IOR(B,106, u_int)</span>
! 118: 00111 <span class="preprocessor"></span><span class="preprocessor">#define BIOCGETIF _IOR(B,107, struct ifreq)</span>
! 119: 00112 <span class="preprocessor"></span><span class="preprocessor">#define BIOCSETIF _IOW(B,108, struct ifreq)</span>
! 120: 00113 <span class="preprocessor"></span><span class="preprocessor">#define BIOCSRTIMEOUT _IOW(B,109, struct timeval)</span>
! 121: 00114 <span class="preprocessor"></span><span class="preprocessor">#define BIOCGRTIMEOUT _IOR(B,110, struct timeval)</span>
! 122: 00115 <span class="preprocessor"></span><span class="preprocessor">#define BIOCGSTATS _IOR(B,111, struct bpf_stat)</span>
! 123: 00116 <span class="preprocessor"></span><span class="preprocessor">#define BIOCIMMEDIATE _IOW(B,112, u_int)</span>
! 124: 00117 <span class="preprocessor"></span><span class="preprocessor">#define BIOCVERSION _IOR(B,113, struct bpf_version)</span>
! 125: 00118 <span class="preprocessor"></span><span class="preprocessor">#define BIOCSTCPF _IOW(B,114, struct bpf_program)</span>
! 126: 00119 <span class="preprocessor"></span><span class="preprocessor">#define BIOCSUDPF _IOW(B,115, struct bpf_program)</span>
! 127: 00120 <span class="preprocessor"></span><span class="preprocessor">#else</span>
! 128: 00121 <span class="preprocessor"></span><span class="preprocessor">#define BIOCGBLEN _IOR('B',102, u_int)</span>
! 129: 00122 <span class="preprocessor"></span><span class="preprocessor">#define BIOCSBLEN _IOWR('B',102, u_int)</span>
! 130: 00123 <span class="preprocessor"></span><span class="preprocessor">#define BIOCSETF _IOW('B',103, struct bpf_program)</span>
! 131: 00124 <span class="preprocessor"></span><span class="preprocessor">#define BIOCFLUSH _IO('B',104)</span>
! 132: 00125 <span class="preprocessor"></span><span class="preprocessor">#define BIOCPROMISC _IO('B',105)</span>
! 133: 00126 <span class="preprocessor"></span><span class="preprocessor">#define BIOCGDLT _IOR('B',106, u_int)</span>
! 134: 00127 <span class="preprocessor"></span><span class="preprocessor">#define BIOCGETIF _IOR('B',107, struct ifreq)</span>
! 135: 00128 <span class="preprocessor"></span><span class="preprocessor">#define BIOCSETIF _IOW('B',108, struct ifreq)</span>
! 136: 00129 <span class="preprocessor"></span><span class="preprocessor">#define BIOCSRTIMEOUT _IOW('B',109, struct timeval)</span>
! 137: 00130 <span class="preprocessor"></span><span class="preprocessor">#define BIOCGRTIMEOUT _IOR('B',110, struct timeval)</span>
! 138: 00131 <span class="preprocessor"></span><span class="preprocessor">#define BIOCGSTATS _IOR('B',111, struct bpf_stat)</span>
! 139: 00132 <span class="preprocessor"></span><span class="preprocessor">#define BIOCIMMEDIATE _IOW('B',112, u_int)</span>
! 140: 00133 <span class="preprocessor"></span><span class="preprocessor">#define BIOCVERSION _IOR('B',113, struct bpf_version)</span>
! 141: 00134 <span class="preprocessor"></span><span class="preprocessor">#define BIOCSTCPF _IOW('B',114, struct bpf_program)</span>
! 142: 00135 <span class="preprocessor"></span><span class="preprocessor">#define BIOCSUDPF _IOW('B',115, struct bpf_program)</span>
! 143: 00136 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
! 144: 00137 <span class="preprocessor"></span>
! 145: 00138 <span class="comment">/*</span>
! 146: 00139 <span class="comment"> * Structure prepended to each packet.</span>
! 147: 00140 <span class="comment"> */</span>
! 148: 00141 <span class="keyword">struct </span>bpf_hdr {
! 149: 00142 <span class="keyword">struct </span>timeval bh_tstamp; <span class="comment">/* time stamp */</span>
! 150: 00143 bpf_u_int32 bh_caplen; <span class="comment">/* length of captured portion */</span>
! 151: 00144 bpf_u_int32 bh_datalen; <span class="comment">/* original length of packet */</span>
! 152: 00145 u_short bh_hdrlen; <span class="comment">/* length of bpf header (this struct</span>
! 153: 00146 <span class="comment"> plus alignment padding) */</span>
! 154: 00147 };
! 155: 00148 <span class="comment">/*</span>
! 156: 00149 <span class="comment"> * Because the structure above is not a multiple of 4 bytes, some compilers</span>
! 157: 00150 <span class="comment"> * will insist on inserting padding; hence, sizeof(struct bpf_hdr) won't work.</span>
! 158: 00151 <span class="comment"> * Only the kernel needs to know about it; applications use bh_hdrlen.</span>
! 159: 00152 <span class="comment"> */</span>
! 160: 00153 <span class="preprocessor">#ifdef KERNEL</span>
! 161: 00154 <span class="preprocessor"></span><span class="preprocessor">#define SIZEOF_BPF_HDR 18</span>
! 162: 00155 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
! 163: 00156 <span class="preprocessor"></span>
! 164: 00157 <span class="comment">/*</span>
! 165: 00158 <span class="comment"> * Data-link level type codes.</span>
! 166: 00159 <span class="comment"> */</span>
! 167: 00160 <span class="preprocessor">#define DLT_NULL 0 </span><span class="comment">/* no link-layer encapsulation */</span>
! 168: 00161 <span class="preprocessor">#define DLT_EN10MB 1 </span><span class="comment">/* Ethernet (10Mb) */</span>
! 169: 00162 <span class="preprocessor">#define DLT_EN3MB 2 </span><span class="comment">/* Experimental Ethernet (3Mb) */</span>
! 170: 00163 <span class="preprocessor">#define DLT_AX25 3 </span><span class="comment">/* Amateur Radio AX.25 */</span>
! 171: 00164 <span class="preprocessor">#define DLT_PRONET 4 </span><span class="comment">/* Proteon ProNET Token Ring */</span>
! 172: 00165 <span class="preprocessor">#define DLT_CHAOS 5 </span><span class="comment">/* Chaos */</span>
! 173: 00166 <span class="preprocessor">#define DLT_IEEE802 6 </span><span class="comment">/* IEEE 802 Networks */</span>
! 174: 00167 <span class="preprocessor">#define DLT_ARCNET 7 </span><span class="comment">/* ARCNET */</span>
! 175: 00168 <span class="preprocessor">#define DLT_SLIP 8 </span><span class="comment">/* Serial Line IP */</span>
! 176: 00169 <span class="preprocessor">#define DLT_PPP 9 </span><span class="comment">/* Point-to-point Protocol */</span>
! 177: 00170 <span class="preprocessor">#define DLT_FDDI 10 </span><span class="comment">/* FDDI */</span>
! 178: 00171 <span class="preprocessor">#define DLT_ATM_RFC1483 11 </span><span class="comment">/* LLC/SNAP encapsulated atm */</span>
! 179: 00172 <span class="preprocessor">#define DLT_RAW 12 </span><span class="comment">/* raw IP */</span>
! 180: 00173 <span class="preprocessor">#define DLT_SLIP_BSDOS 13 </span><span class="comment">/* BSD/OS Serial Line IP */</span>
! 181: 00174 <span class="preprocessor">#define DLT_PPP_BSDOS 14 </span><span class="comment">/* BSD/OS Point-to-point Protocol */</span>
! 182: 00175
! 183: 00176 <span class="comment">/*</span>
! 184: 00177 <span class="comment"> * The instruction encondings.</span>
! 185: 00178 <span class="comment"> */</span>
! 186: 00179 <span class="comment">/* instruction classes */</span>
! 187: 00180 <span class="preprocessor">#define BPF_CLASS(code) ((code) & 0x07)</span>
! 188: 00181 <span class="preprocessor"></span><span class="preprocessor">#define BPF_LD 0x00</span>
! 189: 00182 <span class="preprocessor"></span><span class="preprocessor">#define BPF_LDX 0x01</span>
! 190: 00183 <span class="preprocessor"></span><span class="preprocessor">#define BPF_ST 0x02</span>
! 191: 00184 <span class="preprocessor"></span><span class="preprocessor">#define BPF_STX 0x03</span>
! 192: 00185 <span class="preprocessor"></span><span class="preprocessor">#define BPF_ALU 0x04</span>
! 193: 00186 <span class="preprocessor"></span><span class="preprocessor">#define BPF_JMP 0x05</span>
! 194: 00187 <span class="preprocessor"></span><span class="preprocessor">#define BPF_RET 0x06</span>
! 195: 00188 <span class="preprocessor"></span><span class="preprocessor">#define BPF_MISC 0x07</span>
! 196: 00189 <span class="preprocessor"></span>
! 197: 00190 <span class="comment">/* ld/ldx fields */</span>
! 198: 00191 <span class="preprocessor">#define BPF_SIZE(code) ((code) & 0x18)</span>
! 199: 00192 <span class="preprocessor"></span><span class="preprocessor">#define BPF_W 0x00</span>
! 200: 00193 <span class="preprocessor"></span><span class="preprocessor">#define BPF_H 0x08</span>
! 201: 00194 <span class="preprocessor"></span><span class="preprocessor">#define BPF_B 0x10</span>
! 202: 00195 <span class="preprocessor"></span><span class="preprocessor">#define BPF_MODE(code) ((code) & 0xe0)</span>
! 203: 00196 <span class="preprocessor"></span><span class="preprocessor">#define BPF_IMM 0x00</span>
! 204: 00197 <span class="preprocessor"></span><span class="preprocessor">#define BPF_ABS 0x20</span>
! 205: 00198 <span class="preprocessor"></span><span class="preprocessor">#define BPF_IND 0x40</span>
! 206: 00199 <span class="preprocessor"></span><span class="preprocessor">#define BPF_MEM 0x60</span>
! 207: 00200 <span class="preprocessor"></span><span class="preprocessor">#define BPF_LEN 0x80</span>
! 208: 00201 <span class="preprocessor"></span><span class="preprocessor">#define BPF_MSH 0xa0</span>
! 209: 00202 <span class="preprocessor"></span>
! 210: 00203 <span class="comment">/* alu/jmp fields */</span>
! 211: 00204 <span class="preprocessor">#define BPF_OP(code) ((code) & 0xf0)</span>
! 212: 00205 <span class="preprocessor"></span><span class="preprocessor">#define BPF_ADD 0x00</span>
! 213: 00206 <span class="preprocessor"></span><span class="preprocessor">#define BPF_SUB 0x10</span>
! 214: 00207 <span class="preprocessor"></span><span class="preprocessor">#define BPF_MUL 0x20</span>
! 215: 00208 <span class="preprocessor"></span><span class="preprocessor">#define BPF_DIV 0x30</span>
! 216: 00209 <span class="preprocessor"></span><span class="preprocessor">#define BPF_OR 0x40</span>
! 217: 00210 <span class="preprocessor"></span><span class="preprocessor">#define BPF_AND 0x50</span>
! 218: 00211 <span class="preprocessor"></span><span class="preprocessor">#define BPF_LSH 0x60</span>
! 219: 00212 <span class="preprocessor"></span><span class="preprocessor">#define BPF_RSH 0x70</span>
! 220: 00213 <span class="preprocessor"></span><span class="preprocessor">#define BPF_NEG 0x80</span>
! 221: 00214 <span class="preprocessor"></span><span class="preprocessor">#define BPF_JA 0x00</span>
! 222: 00215 <span class="preprocessor"></span><span class="preprocessor">#define BPF_JEQ 0x10</span>
! 223: 00216 <span class="preprocessor"></span><span class="preprocessor">#define BPF_JGT 0x20</span>
! 224: 00217 <span class="preprocessor"></span><span class="preprocessor">#define BPF_JGE 0x30</span>
! 225: 00218 <span class="preprocessor"></span><span class="preprocessor">#define BPF_JSET 0x40</span>
! 226: 00219 <span class="preprocessor"></span><span class="preprocessor">#define BPF_SRC(code) ((code) & 0x08)</span>
! 227: 00220 <span class="preprocessor"></span><span class="preprocessor">#define BPF_K 0x00</span>
! 228: 00221 <span class="preprocessor"></span><span class="preprocessor">#define BPF_X 0x08</span>
! 229: 00222 <span class="preprocessor"></span>
! 230: 00223 <span class="comment">/* ret - BPF_K and BPF_X also apply */</span>
! 231: 00224 <span class="preprocessor">#define BPF_RVAL(code) ((code) & 0x18)</span>
! 232: 00225 <span class="preprocessor"></span><span class="preprocessor">#define BPF_A 0x10</span>
! 233: 00226 <span class="preprocessor"></span>
! 234: 00227 <span class="comment">/* misc */</span>
! 235: 00228 <span class="preprocessor">#define BPF_MISCOP(code) ((code) & 0xf8)</span>
! 236: 00229 <span class="preprocessor"></span><span class="preprocessor">#define BPF_TAX 0x00</span>
! 237: 00230 <span class="preprocessor"></span><span class="preprocessor">#define BPF_TXA 0x80</span>
! 238: 00231 <span class="preprocessor"></span>
! 239: 00232 <span class="comment">/*</span>
! 240: 00233 <span class="comment"> * The instruction data structure.</span>
! 241: 00234 <span class="comment"> */</span>
! 242: 00235 <span class="keyword">struct </span>bpf_insn {
! 243: 00236 u_short code;
! 244: 00237 u_char jt;
! 245: 00238 u_char jf;
! 246: 00239 bpf_int32 k;
! 247: 00240 };
! 248: 00241
! 249: 00242 <span class="comment">/*</span>
! 250: 00243 <span class="comment"> * Macros for insn array initializers.</span>
! 251: 00244 <span class="comment"> */</span>
! 252: 00245 <span class="preprocessor">#define BPF_STMT(code, k) { (u_short)(code), 0, 0, k }</span>
! 253: 00246 <span class="preprocessor"></span><span class="preprocessor">#define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k }</span>
! 254: 00247 <span class="preprocessor"></span>
! 255: 00248 <span class="preprocessor">#ifdef KERNEL</span>
! 256: 00249 <span class="preprocessor"></span><span class="keyword">extern</span> u_int bpf_filter();
! 257: 00250 <span class="keyword">extern</span> <span class="keywordtype">void</span> bpfattach();
! 258: 00251 <span class="keyword">extern</span> <span class="keywordtype">void</span> bpf_tap();
! 259: 00252 <span class="keyword">extern</span> <span class="keywordtype">void</span> bpf_mtap();
! 260: 00253 <span class="preprocessor">#else</span>
! 261: 00254 <span class="preprocessor"></span><span class="preprocessor">#if __STDC__</span>
! 262: 00255 <span class="preprocessor"></span><span class="keyword">extern</span> u_int bpf_filter(<span class="keyword">struct</span> bpf_insn *, u_char *, u_int, u_int);
! 263: 00256 <span class="preprocessor">#endif</span>
! 264: 00257 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
! 265: 00258 <span class="preprocessor"></span>
! 266: 00259 <span class="comment">/*</span>
! 267: 00260 <span class="comment"> * Number of scratch memory words (for BPF_LD|BPF_MEM and BPF_ST).</span>
! 268: 00261 <span class="comment"> */</span>
! 269: 00262 <span class="preprocessor">#define BPF_MEMWORDS 16</span>
! 270: 00263 <span class="preprocessor"></span>
! 271: 00264 <span class="preprocessor">#endif</span>
! 272: </pre></div><hr size="1"><address style="align: right;"><small>Generated on Wed Mar 10 13:23:37 2004 for libnet by
! 273: <a href="http://www.doxygen.org/index.html">
! 274: <img src="doxygen.png" alt="doxygen" align="middle" border=0 >
! 275: </a>1.3.4 </small></address>
! 276: </body>
! 277: </html>
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