1 /* 2 * Copyright (c) 2000-2025 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* 29 * Copyright (c) 1990, 1991, 1993 30 * The Regents of the University of California. All rights reserved. 31 * 32 * This code is derived from the Stanford/CMU enet packet filter, 33 * (net/enet.c) distributed as part of 4.3BSD, and code contributed 34 * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence 35 * Berkeley Laboratory. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)bpf.h 8.1 (Berkeley) 6/10/93 66 * @(#)bpf.h 1.34 (LBL) 6/16/96 67 * 68 * $FreeBSD: src/sys/net/bpf.h,v 1.21.2.3 2001/08/01 00:23:13 fenner Exp $ 69 */ 70 /* 71 * NOTICE: This file was modified by SPARTA, Inc. in 2006 to introduce 72 * support for mandatory and extensible security protections. This notice 73 * is included in support of clause 2.2 (b) of the Apple Public License, 74 * Version 2.0. 75 */ 76 77 #ifndef _NET_BPF_H_ 78 #define _NET_BPF_H_ 79 80 #include <stdint.h> 81 82 #if !defined(DRIVERKIT) 83 #include <net/if.h> 84 #include <sys/param.h> 85 #include <sys/appleapiopts.h> 86 #include <sys/types.h> 87 #include <sys/time.h> 88 #include <sys/cdefs.h> 89 90 #ifdef KERNEL 91 #include <sys/kernel_types.h> 92 93 #if !defined(__i386__) && !defined(__x86_64__) 94 #define BPF_ALIGN 1 95 #else /* defined(__i386__) || defined(__x86_64__) */ 96 #define BPF_ALIGN 0 97 #endif /* defined(__i386__) || defined(__x86_64__) */ 98 99 #if !BPF_ALIGN 100 #define EXTRACT_SHORT(p) ((u_int16_t)ntohs(*(u_int16_t *)(void *)p)) 101 #define EXTRACT_LONG(p) (ntohl(*(u_int32_t *)(void *)p)) 102 #else 103 #define EXTRACT_SHORT(p) \ 104 ((u_int16_t)\ 105 ((u_int16_t)*((u_char *)p+0)<<8|\ 106 (u_int16_t)*((u_char *)p+1)<<0)) 107 #define EXTRACT_LONG(p) \ 108 ((u_int32_t)*((u_char *)p+0)<<24|\ 109 (u_int32_t)*((u_char *)p+1)<<16|\ 110 (u_int32_t)*((u_char *)p+2)<<8|\ 111 (u_int32_t)*((u_char *)p+3)<<0) 112 #endif 113 114 #endif /* KERNEL */ 115 116 /* BSD style release date */ 117 #define BPF_RELEASE 199606 118 119 typedef int32_t bpf_int32; 120 typedef u_int32_t bpf_u_int32; 121 122 /* 123 * Alignment macros. BPF_WORDALIGN rounds up to the next 124 * even multiple of BPF_ALIGNMENT. 125 */ 126 #define BPF_ALIGNMENT sizeof(int32_t) 127 #define BPF_WORDALIGN(x) (((x)+(BPF_ALIGNMENT-1))&~(BPF_ALIGNMENT-1)) 128 129 #define BPF_MAXINSNS 512 130 #define BPF_MAXBUFSIZE 0x80000 131 #define BPF_MINBUFSIZE 32 132 133 /* 134 * Structure for BIOCSETF. 135 */ 136 struct bpf_program { 137 u_int bf_len; 138 struct bpf_insn *bf_insns; 139 }; 140 141 /* 142 * Struct returned by BIOCGSTATS. 143 */ 144 struct bpf_stat { 145 u_int bs_recv; /* number of packets received */ 146 u_int bs_drop; /* number of packets dropped */ 147 }; 148 149 /* 150 * Struct return by BIOCVERSION. This represents the version number of 151 * the filter language described by the instruction encodings below. 152 * bpf understands a program iff kernel_major == filter_major && 153 * kernel_minor >= filter_minor, that is, if the value returned by the 154 * running kernel has the same major number and a minor number equal 155 * equal to or less than the filter being downloaded. Otherwise, the 156 * results are undefined, meaning an error may be returned or packets 157 * may be accepted haphazardly. 158 * It has nothing to do with the source code version. 159 */ 160 struct bpf_version { 161 u_short bv_major; 162 u_short bv_minor; 163 }; 164 165 #if defined(__LP64__) 166 #include <sys/_types/_timeval32.h> 167 168 #define BPF_TIMEVAL timeval32 169 #else 170 #define BPF_TIMEVAL timeval 171 #endif /* __LP64__ */ 172 /* Current version number of filter architecture. */ 173 #define BPF_MAJOR_VERSION 1 174 #define BPF_MINOR_VERSION 1 175 176 #define BIOCGBLEN _IOR('B',102, u_int) 177 #define BIOCSBLEN _IOWR('B',102, u_int) 178 #define BIOCSETF _IOW('B',103, struct bpf_program) 179 #define BIOCFLUSH _IO('B',104) 180 #define BIOCPROMISC _IO('B',105) 181 #define BIOCGDLT _IOR('B',106, u_int) 182 #define BIOCGETIF _IOR('B',107, struct ifreq) 183 #define BIOCSETIF _IOW('B',108, struct ifreq) 184 #define BIOCSRTIMEOUT _IOW('B',109, struct timeval) 185 #define BIOCGRTIMEOUT _IOR('B',110, struct timeval) 186 #define BIOCGSTATS _IOR('B',111, struct bpf_stat) 187 #define BIOCIMMEDIATE _IOW('B',112, u_int) 188 #define BIOCVERSION _IOR('B',113, struct bpf_version) 189 #define BIOCGRSIG _IOR('B',114, u_int) 190 #define BIOCSRSIG _IOW('B',115, u_int) 191 #define BIOCGHDRCMPLT _IOR('B',116, u_int) 192 #define BIOCSHDRCMPLT _IOW('B',117, u_int) 193 #define BIOCGSEESENT _IOR('B',118, u_int) 194 #define BIOCSSEESENT _IOW('B',119, u_int) 195 #define BIOCSDLT _IOW('B',120, u_int) 196 #define BIOCGDLTLIST _IOWR('B',121, struct bpf_dltlist) 197 #define BIOCSETFNR _IOW('B', 126, struct bpf_program) 198 #ifdef PRIVATE 199 /* See bpf_private.h for additional ioctls */ 200 #endif /* PRIVATE */ 201 202 /* 203 * Structure prepended to each packet. 204 */ 205 struct bpf_hdr { 206 struct BPF_TIMEVAL bh_tstamp; /* time stamp */ 207 bpf_u_int32 bh_caplen; /* length of captured portion */ 208 bpf_u_int32 bh_datalen; /* original length of packet */ 209 u_short bh_hdrlen; /* length of bpf header (this struct 210 * plus alignment padding) */ 211 }; 212 #ifdef KERNEL 213 /* 214 * Because the structure above is not a multiple of 4 bytes, some compilers 215 * will insist on inserting padding; hence, sizeof(struct bpf_hdr) won't work. 216 * Only the kernel needs to know about it; applications use bh_hdrlen. 217 */ 218 #define SIZEOF_BPF_HDR (sizeof(struct bpf_hdr) <= 20 ? 18 : \ 219 sizeof(struct bpf_hdr)) 220 #endif 221 #endif /* !defined(DRIVERKIT) */ 222 223 /* 224 * Data-link level type codes. 225 */ 226 #define DLT_NULL 0 /* no link-layer encapsulation */ 227 #define DLT_EN10MB 1 /* Ethernet (10Mb) */ 228 #define DLT_EN3MB 2 /* Experimental Ethernet (3Mb) */ 229 #define DLT_AX25 3 /* Amateur Radio AX.25 */ 230 #define DLT_PRONET 4 /* Proteon ProNET Token Ring */ 231 #define DLT_CHAOS 5 /* Chaos */ 232 #define DLT_IEEE802 6 /* IEEE 802 Networks */ 233 #define DLT_ARCNET 7 /* ARCNET */ 234 #define DLT_SLIP 8 /* Serial Line IP */ 235 #define DLT_PPP 9 /* Point-to-point Protocol */ 236 #define DLT_FDDI 10 /* FDDI */ 237 #define DLT_ATM_RFC1483 11 /* LLC/SNAP encapsulated atm */ 238 #define DLT_RAW 12 /* raw IP */ 239 240 /* 241 * These are values from BSD/OS's "bpf.h". 242 * These are not the same as the values from the traditional libpcap 243 * "bpf.h"; however, these values shouldn't be generated by any 244 * OS other than BSD/OS, so the correct values to use here are the 245 * BSD/OS values. 246 * 247 * Platforms that have already assigned these values to other 248 * DLT_ codes, however, should give these codes the values 249 * from that platform, so that programs that use these codes will 250 * continue to compile - even though they won't correctly read 251 * files of these types. 252 */ 253 #define DLT_SLIP_BSDOS 15 /* BSD/OS Serial Line IP */ 254 #define DLT_PPP_BSDOS 16 /* BSD/OS Point-to-point Protocol */ 255 256 /* 257 * 17 was used for DLT_PFLOG in OpenBSD; it no longer is. 258 * 259 * It was DLT_LANE8023 in SuSE 6.3, so we defined LINKTYPE_PFLOG 260 * as 117 so that pflog captures would use a link-layer header type 261 * value that didn't collide with any other values. On all 262 * platforms other than OpenBSD, we defined DLT_PFLOG as 117, 263 * and we mapped between LINKTYPE_PFLOG and DLT_PFLOG. 264 * 265 * OpenBSD eventually switched to using 117 for DLT_PFLOG as well. 266 * 267 * Don't use 17 for anything else. 268 */ 269 270 /* 271 * 18 is used for DLT_PFSYNC in OpenBSD, NetBSD, DragonFly BSD and 272 * Mac OS X; don't use it for anything else. (FreeBSD uses 121, 273 * which collides with DLT_HHDLC, even though it doesn't use 18 274 * for anything and doesn't appear to have ever used it for anything.) 275 * 276 * We define it as 18 on those platforms; it is, unfortunately, used 277 * for DLT_CIP in Suse 6.3, so we don't define it as DLT_PFSYNC 278 * in general. As the packet format for it, like that for 279 * DLT_PFLOG, is not only OS-dependent but OS-version-dependent, 280 * we don't support printing it in tcpdump except on OSes that 281 * have the relevant header files, so it's not that useful on 282 * other platforms. 283 */ 284 #define DLT_PFSYNC 18 /* Packet filter state syncing */ 285 286 #define DLT_ATM_CLIP 19 /* Linux Classical-IP over ATM */ 287 288 /* 289 * These values are defined by NetBSD; other platforms should refrain from 290 * using them for other purposes, so that NetBSD savefiles with link 291 * types of 50 or 51 can be read as this type on all platforms. 292 */ 293 #define DLT_PPP_SERIAL 50 /* PPP over serial with HDLC encapsulation */ 294 #define DLT_PPP_ETHER 51 /* PPP over Ethernet */ 295 296 /* 297 * The Axent Raptor firewall - now the Symantec Enterprise Firewall - uses 298 * a link-layer type of 99 for the tcpdump it supplies. The link-layer 299 * header has 6 bytes of unknown data, something that appears to be an 300 * Ethernet type, and 36 bytes that appear to be 0 in at least one capture 301 * I've seen. 302 */ 303 #define DLT_SYMANTEC_FIREWALL 99 304 305 /* 306 * Values between 100 and 103 are used in capture file headers as 307 * link-layer header type LINKTYPE_ values corresponding to DLT_ types 308 * that differ between platforms; don't use those values for new DLT_ 309 * new types. 310 */ 311 312 /* 313 * Values starting with 104 are used for newly-assigned link-layer 314 * header type values; for those link-layer header types, the DLT_ 315 * value returned by pcap_datalink() and passed to pcap_open_dead(), 316 * and the LINKTYPE_ value that appears in capture files, are the 317 * same. 318 * 319 * DLT_MATCHING_MIN is the lowest such value; DLT_MATCHING_MAX is 320 * the highest such value. 321 */ 322 #define DLT_MATCHING_MIN 104 323 324 /* 325 * This value was defined by libpcap 0.5; platforms that have defined 326 * it with a different value should define it here with that value - 327 * a link type of 104 in a save file will be mapped to DLT_C_HDLC, 328 * whatever value that happens to be, so programs will correctly 329 * handle files with that link type regardless of the value of 330 * DLT_C_HDLC. 331 * 332 * The name DLT_C_HDLC was used by BSD/OS; we use that name for source 333 * compatibility with programs written for BSD/OS. 334 * 335 * libpcap 0.5 defined it as DLT_CHDLC; we define DLT_CHDLC as well, 336 * for source compatibility with programs written for libpcap 0.5. 337 */ 338 #define DLT_C_HDLC 104 /* Cisco HDLC */ 339 #define DLT_CHDLC DLT_C_HDLC 340 341 #define DLT_IEEE802_11 105 /* IEEE 802.11 wireless */ 342 343 /* 344 * Values between 106 and 107 are used in capture file headers as 345 * link-layer types corresponding to DLT_ types that might differ 346 * between platforms; don't use those values for new DLT_ new types. 347 */ 348 349 /* 350 * Frame Relay; BSD/OS has a DLT_FR with a value of 11, but that collides 351 * with other values. 352 * DLT_FR and DLT_FRELAY packets start with the Q.922 Frame Relay header 353 * (DLCI, etc.). 354 */ 355 #define DLT_FRELAY 107 356 357 /* 358 * OpenBSD DLT_LOOP, for loopback devices; it's like DLT_NULL, except 359 * that the AF_ type in the link-layer header is in network byte order. 360 * 361 * OpenBSD defines it as 12, but that collides with DLT_RAW, so we 362 * define it as 108 here. If OpenBSD picks up this file, it should 363 * define DLT_LOOP as 12 in its version, as per the comment above - 364 * and should not use 108 for any purpose. 365 */ 366 #define DLT_LOOP 108 367 368 /* 369 * Values between 109 and 112 are used in capture file headers as 370 * link-layer types corresponding to DLT_ types that might differ 371 * between platforms; don't use those values for new DLT_ new types. 372 */ 373 374 /* 375 * Encapsulated packets for IPsec; DLT_ENC is 13 in OpenBSD, but that's 376 * DLT_SLIP_BSDOS in NetBSD, so we don't use 13 for it in OSes other 377 * than OpenBSD. 378 */ 379 #define DLT_ENC 109 380 381 /* 382 * This is for Linux cooked sockets. 383 */ 384 #define DLT_LINUX_SLL 113 385 386 /* 387 * Apple LocalTalk hardware. 388 */ 389 #define DLT_LTALK 114 390 391 /* 392 * Acorn Econet. 393 */ 394 #define DLT_ECONET 115 395 396 /* 397 * Reserved for use with OpenBSD ipfilter. 398 */ 399 #define DLT_IPFILTER 116 400 401 /* 402 * For use in capture-file headers as a link-layer type corresponding 403 * to OpenBSD PF (Packet Filter) log. 404 */ 405 #define DLT_PFLOG 117 406 407 /* 408 * Registered for Cisco-internal use. 409 */ 410 #define DLT_CISCO_IOS 118 411 412 /* 413 * Reserved for 802.11 cards using the Prism II chips, with a link-layer 414 * header including Prism monitor mode information plus an 802.11 415 * header. 416 */ 417 #define DLT_PRISM_HEADER 119 418 419 /* 420 * Reserved for Aironet 802.11 cards, with an Aironet link-layer header 421 * (see Doug Ambrisko's FreeBSD patches). 422 */ 423 #define DLT_AIRONET_HEADER 120 424 425 /* 426 * Reserved for Siemens HiPath HDLC. XXX 427 */ 428 #define DLT_HHDLC 121 429 430 /* 431 * Reserved for RFC 2625 IP-over-Fibre Channel. 432 */ 433 #define DLT_IP_OVER_FC 122 434 435 /* 436 * Reserved for Full Frontal ATM on Solaris. 437 */ 438 #define DLT_SUNATM 123 439 440 /* 441 * Reserved as per request from Kent Dahlgren <[email protected]> 442 * for private use. 443 */ 444 #define DLT_RIO 124 /* RapidIO */ 445 #define DLT_PCI_EXP 125 /* PCI Express */ 446 #define DLT_AURORA 126 /* Xilinx Aurora link layer */ 447 448 /* 449 * BSD header for 802.11 plus a number of bits of link-layer information 450 * including radio information. 451 */ 452 #ifndef DLT_IEEE802_11_RADIO 453 #define DLT_IEEE802_11_RADIO 127 454 #endif 455 456 /* 457 * Reserved for TZSP encapsulation. 458 */ 459 #define DLT_TZSP 128 /* Tazmen Sniffer Protocol */ 460 461 /* 462 * Reserved for Linux ARCNET. 463 */ 464 #define DLT_ARCNET_LINUX 129 465 466 /* 467 * Juniper-private data link types. 468 */ 469 #define DLT_JUNIPER_MLPPP 130 470 #define DLT_JUNIPER_MLFR 131 471 #define DLT_JUNIPER_ES 132 472 #define DLT_JUNIPER_GGSN 133 473 #define DLT_JUNIPER_MFR 134 474 #define DLT_JUNIPER_ATM2 135 475 #define DLT_JUNIPER_SERVICES 136 476 #define DLT_JUNIPER_ATM1 137 477 478 /* 479 * Apple IP-over-IEEE 1394, as per a request from Dieter Siegmund 480 * <[email protected]>. The header that's presented is an Ethernet-like 481 * header: 482 * 483 * #define FIREWIRE_EUI64_LEN 8 484 * struct firewire_header { 485 * u_char firewire_dhost[FIREWIRE_EUI64_LEN]; 486 * u_char firewire_shost[FIREWIRE_EUI64_LEN]; 487 * u_short firewire_type; 488 * }; 489 * 490 * with "firewire_type" being an Ethernet type value, rather than, 491 * for example, raw GASP frames being handed up. 492 */ 493 #define DLT_APPLE_IP_OVER_IEEE1394 138 494 495 /* 496 * Various SS7 encapsulations, as per a request from Jeff Morriss 497 * <jeff.morriss[AT]ulticom.com> and subsequent discussions. 498 */ 499 #define DLT_MTP2_WITH_PHDR 139 /* pseudo-header with various info, followed by MTP2 */ 500 #define DLT_MTP2 140 /* MTP2, without pseudo-header */ 501 #define DLT_MTP3 141 /* MTP3, without pseudo-header or MTP2 */ 502 #define DLT_SCCP 142 /* SCCP, without pseudo-header or MTP2 or MTP3 */ 503 504 /* 505 * Reserved for DOCSIS. 506 */ 507 #define DLT_DOCSIS 143 508 509 /* 510 * Reserved for Linux IrDA. 511 */ 512 #define DLT_LINUX_IRDA 144 513 514 /* 515 * Reserved for IBM SP switch and IBM Next Federation switch. 516 */ 517 #define DLT_IBM_SP 145 518 #define DLT_IBM_SN 146 519 520 /* 521 * Reserved for private use. If you have some link-layer header type 522 * that you want to use within your organization, with the capture files 523 * using that link-layer header type not ever be sent outside your 524 * organization, you can use these values. 525 * 526 * No libpcap release will use these for any purpose, nor will any 527 * tcpdump release use them, either. 528 * 529 * Do *NOT* use these in capture files that you expect anybody not using 530 * your private versions of capture-file-reading tools to read; in 531 * particular, do *NOT* use them in products, otherwise you may find that 532 * people won't be able to use tcpdump, or snort, or Ethereal, or... to 533 * read capture files from your firewall/intrusion detection/traffic 534 * monitoring/etc. appliance, or whatever product uses that DLT_ value, 535 * and you may also find that the developers of those applications will 536 * not accept patches to let them read those files. 537 * 538 * Also, do not use them if somebody might send you a capture using them 539 * for *their* private type and tools using them for *your* private type 540 * would have to read them. 541 * 542 * Instead, ask "[email protected]" for a new DLT_ value, 543 * as per the comment above, and use the type you're given. 544 */ 545 #define DLT_USER0 147 546 #define DLT_USER1 148 547 #define DLT_USER2 149 548 #define DLT_USER3 150 549 #define DLT_USER4 151 550 #define DLT_USER5 152 551 #define DLT_USER6 153 552 #define DLT_USER7 154 553 #define DLT_USER8 155 554 #define DLT_USER9 156 555 #define DLT_USER10 157 556 #define DLT_USER11 158 557 #define DLT_USER12 159 558 #define DLT_USER13 160 559 #define DLT_USER14 161 560 #define DLT_USER15 162 561 562 /* 563 * For future use with 802.11 captures - defined by AbsoluteValue 564 * Systems to store a number of bits of link-layer information 565 * including radio information: 566 * 567 * http://www.shaftnet.org/~pizza/software/capturefrm.txt 568 * 569 * but it might be used by some non-AVS drivers now or in the 570 * future. 571 */ 572 #define DLT_IEEE802_11_RADIO_AVS 163 /* 802.11 plus AVS radio header */ 573 574 /* 575 * Juniper-private data link type, as per request from 576 * Hannes Gredler <[email protected]>. The DLT_s are used 577 * for passing on chassis-internal metainformation such as 578 * QOS profiles, etc.. 579 */ 580 #define DLT_JUNIPER_MONITOR 164 581 582 /* 583 * Reserved for BACnet MS/TP. 584 */ 585 #define DLT_BACNET_MS_TP 165 586 587 /* 588 * Another PPP variant as per request from Karsten Keil <[email protected]>. 589 * 590 * This is used in some OSes to allow a kernel socket filter to distinguish 591 * between incoming and outgoing packets, on a socket intended to 592 * supply pppd with outgoing packets so it can do dial-on-demand and 593 * hangup-on-lack-of-demand; incoming packets are filtered out so they 594 * don't cause pppd to hold the connection up (you don't want random 595 * input packets such as port scans, packets from old lost connections, 596 * etc. to force the connection to stay up). 597 * 598 * The first byte of the PPP header (0xff03) is modified to accomodate 599 * the direction - 0x00 = IN, 0x01 = OUT. 600 */ 601 #define DLT_PPP_PPPD 166 602 603 /* 604 * Names for backwards compatibility with older versions of some PPP 605 * software; new software should use DLT_PPP_PPPD. 606 */ 607 #define DLT_PPP_WITH_DIRECTION DLT_PPP_PPPD 608 #define DLT_LINUX_PPP_WITHDIRECTION DLT_PPP_PPPD 609 610 /* 611 * Juniper-private data link type, as per request from 612 * Hannes Gredler <[email protected]>. The DLT_s are used 613 * for passing on chassis-internal metainformation such as 614 * QOS profiles, cookies, etc.. 615 */ 616 #define DLT_JUNIPER_PPPOE 167 617 #define DLT_JUNIPER_PPPOE_ATM 168 618 619 #define DLT_GPRS_LLC 169 /* GPRS LLC */ 620 #define DLT_GPF_T 170 /* GPF-T (ITU-T G.7041/Y.1303) */ 621 #define DLT_GPF_F 171 /* GPF-F (ITU-T G.7041/Y.1303) */ 622 623 /* 624 * Requested by Oolan Zimmer <[email protected]> for use in Gcom's T1/E1 line 625 * monitoring equipment. 626 */ 627 #define DLT_GCOM_T1E1 172 628 #define DLT_GCOM_SERIAL 173 629 630 /* 631 * Juniper-private data link type, as per request from 632 * Hannes Gredler <[email protected]>. The DLT_ is used 633 * for internal communication to Physical Interface Cards (PIC) 634 */ 635 #define DLT_JUNIPER_PIC_PEER 174 636 637 /* 638 * Link types requested by Gregor Maier <[email protected]> of Endace 639 * Measurement Systems. They add an ERF header (see 640 * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of 641 * the link-layer header. 642 */ 643 #define DLT_ERF_ETH 175 /* Ethernet */ 644 #define DLT_ERF_POS 176 /* Packet-over-SONET */ 645 646 /* 647 * Requested by Daniele Orlandi <[email protected]> for raw LAPD 648 * for vISDN (http://www.orlandi.com/visdn/). Its link-layer header 649 * includes additional information before the LAPD header, so it's 650 * not necessarily a generic LAPD header. 651 */ 652 #define DLT_LINUX_LAPD 177 653 654 /* 655 * Juniper-private data link type, as per request from 656 * Hannes Gredler <[email protected]>. 657 * The DLT_ are used for prepending meta-information 658 * like interface index, interface name 659 * before standard Ethernet, PPP, Frelay & C-HDLC Frames 660 */ 661 #define DLT_JUNIPER_ETHER 178 662 #define DLT_JUNIPER_PPP 179 663 #define DLT_JUNIPER_FRELAY 180 664 #define DLT_JUNIPER_CHDLC 181 665 666 /* 667 * Multi Link Frame Relay (FRF.16) 668 */ 669 #define DLT_MFR 182 670 671 /* 672 * Juniper-private data link type, as per request from 673 * Hannes Gredler <[email protected]>. 674 * The DLT_ is used for internal communication with a 675 * voice Adapter Card (PIC) 676 */ 677 #define DLT_JUNIPER_VP 183 678 679 /* 680 * Arinc 429 frames. 681 * DLT_ requested by Gianluca Varenni <[email protected]>. 682 * Every frame contains a 32bit A429 label. 683 * More documentation on Arinc 429 can be found at 684 * http://www.condoreng.com/support/downloads/tutorials/ARINCTutorial.pdf 685 */ 686 #define DLT_A429 184 687 688 /* 689 * Arinc 653 Interpartition Communication messages. 690 * DLT_ requested by Gianluca Varenni <[email protected]>. 691 * Please refer to the A653-1 standard for more information. 692 */ 693 #define DLT_A653_ICM 185 694 695 /* 696 * USB packets, beginning with a USB setup header; requested by 697 * Paolo Abeni <[email protected]>. 698 */ 699 #define DLT_USB 186 700 701 /* 702 * Bluetooth HCI UART transport layer (part H:4); requested by 703 * Paolo Abeni. 704 */ 705 #define DLT_BLUETOOTH_HCI_H4 187 706 707 /* 708 * IEEE 802.16 MAC Common Part Sublayer; requested by Maria Cruz 709 * <[email protected]>. 710 */ 711 #define DLT_IEEE802_16_MAC_CPS 188 712 713 /* 714 * USB packets, beginning with a Linux USB header; requested by 715 * Paolo Abeni <[email protected]>. 716 */ 717 #define DLT_USB_LINUX 189 718 719 /* 720 * Controller Area Network (CAN) v. 2.0B packets. 721 * DLT_ requested by Gianluca Varenni <[email protected]>. 722 * Used to dump CAN packets coming from a CAN Vector board. 723 * More documentation on the CAN v2.0B frames can be found at 724 * http://www.can-cia.org/downloads/?269 725 */ 726 #define DLT_CAN20B 190 727 728 /* 729 * IEEE 802.15.4, with address fields padded, as is done by Linux 730 * drivers; requested by Juergen Schimmer. 731 */ 732 #define DLT_IEEE802_15_4_LINUX 191 733 734 /* 735 * Per Packet Information encapsulated packets. 736 * DLT_ requested by Gianluca Varenni <[email protected]>. 737 */ 738 #define DLT_PPI 192 739 740 /* 741 * Header for 802.16 MAC Common Part Sublayer plus a radiotap radio header; 742 * requested by Charles Clancy. 743 */ 744 #define DLT_IEEE802_16_MAC_CPS_RADIO 193 745 746 /* 747 * Juniper-private data link type, as per request from 748 * Hannes Gredler <[email protected]>. 749 * The DLT_ is used for internal communication with a 750 * integrated service module (ISM). 751 */ 752 #define DLT_JUNIPER_ISM 194 753 754 /* 755 * IEEE 802.15.4, exactly as it appears in the spec (no padding, no 756 * nothing); requested by Mikko Saarnivala <[email protected]>. 757 */ 758 #define DLT_IEEE802_15_4 195 759 760 /* 761 * Various link-layer types, with a pseudo-header, for SITA 762 * (http://www.sita.aero/); requested by Fulko Hew ([email protected]). 763 */ 764 #define DLT_SITA 196 765 766 /* 767 * Various link-layer types, with a pseudo-header, for Endace DAG cards; 768 * encapsulates Endace ERF records. Requested by Stephen Donnelly 769 * <[email protected]>. 770 */ 771 #define DLT_ERF 197 772 773 /* 774 * Special header prepended to Ethernet packets when capturing from a 775 * u10 Networks board. Requested by Phil Mulholland 776 * <[email protected]>. 777 */ 778 #define DLT_RAIF1 198 779 780 /* 781 * IPMB packet for IPMI, beginning with the I2C slave address, followed 782 * by the netFn and LUN, etc.. Requested by Chanthy Toeung 783 * <[email protected]>. 784 */ 785 #define DLT_IPMB 199 786 787 /* 788 * Juniper-private data link type, as per request from 789 * Hannes Gredler <[email protected]>. 790 * The DLT_ is used for capturing data on a secure tunnel interface. 791 */ 792 #define DLT_JUNIPER_ST 200 793 794 /* 795 * Bluetooth HCI UART transport layer (part H:4), with pseudo-header 796 * that includes direction information; requested by Paolo Abeni. 797 */ 798 #define DLT_BLUETOOTH_HCI_H4_WITH_PHDR 201 799 800 /* 801 * AX.25 packet with a 1-byte KISS header; see 802 * 803 * http://www.ax25.net/kiss.htm 804 * 805 * as per Richard Stearn <[email protected]>. 806 */ 807 #define DLT_AX25_KISS 202 808 809 /* 810 * LAPD packets from an ISDN channel, starting with the address field, 811 * with no pseudo-header. 812 * Requested by Varuna De Silva <[email protected]>. 813 */ 814 #define DLT_LAPD 203 815 816 /* 817 * Variants of various link-layer headers, with a one-byte direction 818 * pseudo-header prepended - zero means "received by this host", 819 * non-zero (any non-zero value) means "sent by this host" - as per 820 * Will Barker <[email protected]>. 821 */ 822 #define DLT_PPP_WITH_DIR 204 /* PPP - don't confuse with DLT_PPP_WITH_DIRECTION */ 823 #define DLT_C_HDLC_WITH_DIR 205 /* Cisco HDLC */ 824 #define DLT_FRELAY_WITH_DIR 206 /* Frame Relay */ 825 #define DLT_LAPB_WITH_DIR 207 /* LAPB */ 826 827 /* 828 * 208 is reserved for an as-yet-unspecified proprietary link-layer 829 * type, as requested by Will Barker. 830 */ 831 832 /* 833 * IPMB with a Linux-specific pseudo-header; as requested by Alexey Neyman 834 * <[email protected]>. 835 */ 836 #define DLT_IPMB_LINUX 209 837 838 /* 839 * FlexRay automotive bus - http://www.flexray.com/ - as requested 840 * by Hannes Kaelber <[email protected]>. 841 */ 842 #define DLT_FLEXRAY 210 843 844 /* 845 * Media Oriented Systems Transport (MOST) bus for multimedia 846 * transport - http://www.mostcooperation.com/ - as requested 847 * by Hannes Kaelber <[email protected]>. 848 */ 849 #define DLT_MOST 211 850 851 /* 852 * Local Interconnect Network (LIN) bus for vehicle networks - 853 * http://www.lin-subbus.org/ - as requested by Hannes Kaelber 854 * <[email protected]>. 855 */ 856 #define DLT_LIN 212 857 858 /* 859 * X2E-private data link type used for serial line capture, 860 * as requested by Hannes Kaelber <[email protected]>. 861 */ 862 #define DLT_X2E_SERIAL 213 863 864 /* 865 * X2E-private data link type used for the Xoraya data logger 866 * family, as requested by Hannes Kaelber <[email protected]>. 867 */ 868 #define DLT_X2E_XORAYA 214 869 870 /* 871 * IEEE 802.15.4, exactly as it appears in the spec (no padding, no 872 * nothing), but with the PHY-level data for non-ASK PHYs (4 octets 873 * of 0 as preamble, one octet of SFD, one octet of frame length+ 874 * reserved bit, and then the MAC-layer data, starting with the 875 * frame control field). 876 * 877 * Requested by Max Filippov <[email protected]>. 878 */ 879 #define DLT_IEEE802_15_4_NONASK_PHY 215 880 881 /* 882 * David Gibson <[email protected]> requested this for 883 * captures from the Linux kernel /dev/input/eventN devices. This 884 * is used to communicate keystrokes and mouse movements from the 885 * Linux kernel to display systems, such as Xorg. 886 */ 887 #define DLT_LINUX_EVDEV 216 888 889 /* 890 * GSM Um and Abis interfaces, preceded by a "gsmtap" header. 891 * 892 * Requested by Harald Welte <[email protected]>. 893 */ 894 #define DLT_GSMTAP_UM 217 895 #define DLT_GSMTAP_ABIS 218 896 897 /* 898 * MPLS, with an MPLS label as the link-layer header. 899 * Requested by Michele Marchetto <[email protected]> on behalf 900 * of OpenBSD. 901 */ 902 #define DLT_MPLS 219 903 904 /* 905 * USB packets, beginning with a Linux USB header, with the USB header 906 * padded to 64 bytes; required for memory-mapped access. 907 */ 908 #define DLT_USB_LINUX_MMAPPED 220 909 910 /* 911 * DECT packets, with a pseudo-header; requested by 912 * Matthias Wenzel <[email protected]>. 913 */ 914 #define DLT_DECT 221 915 916 /* 917 * From: "Lidwa, Eric (GSFC-582.0)[SGT INC]" <[email protected]> 918 * Date: Mon, 11 May 2009 11:18:30 -0500 919 * 920 * DLT_AOS. We need it for AOS Space Data Link Protocol. 921 * I have already written dissectors for but need an OK from 922 * legal before I can submit a patch. 923 * 924 */ 925 #define DLT_AOS 222 926 927 /* 928 * Wireless HART (Highway Addressable Remote Transducer) 929 * From the HART Communication Foundation 930 * IES/PAS 62591 931 * 932 * Requested by Sam Roberts <[email protected]>. 933 */ 934 #define DLT_WIHART 223 935 936 /* 937 * Fibre Channel FC-2 frames, beginning with a Frame_Header. 938 * Requested by Kahou Lei <[email protected]>. 939 */ 940 #define DLT_FC_2 224 941 942 /* 943 * Fibre Channel FC-2 frames, beginning with an encoding of the 944 * SOF, and ending with an encoding of the EOF. 945 * 946 * The encodings represent the frame delimiters as 4-byte sequences 947 * representing the corresponding ordered sets, with K28.5 948 * represented as 0xBC, and the D symbols as the corresponding 949 * byte values; for example, SOFi2, which is K28.5 - D21.5 - D1.2 - D21.2, 950 * is represented as 0xBC 0xB5 0x55 0x55. 951 * 952 * Requested by Kahou Lei <[email protected]>. 953 */ 954 #define DLT_FC_2_WITH_FRAME_DELIMS 225 955 956 /* 957 * Solaris ipnet pseudo-header; requested by Darren Reed <[email protected]>. 958 * 959 * The pseudo-header starts with a one-byte version number; for version 2, 960 * the pseudo-header is: 961 * 962 * struct dl_ipnetinfo { 963 * u_int8_t dli_version; 964 * u_int8_t dli_family; 965 * u_int16_t dli_htype; 966 * u_int32_t dli_pktlen; 967 * u_int32_t dli_ifindex; 968 * u_int32_t dli_grifindex; 969 * u_int32_t dli_zsrc; 970 * u_int32_t dli_zdst; 971 * }; 972 * 973 * dli_version is 2 for the current version of the pseudo-header. 974 * 975 * dli_family is a Solaris address family value, so it's 2 for IPv4 976 * and 26 for IPv6. 977 * 978 * dli_htype is a "hook type" - 0 for incoming packets, 1 for outgoing 979 * packets, and 2 for packets arriving from another zone on the same 980 * machine. 981 * 982 * dli_pktlen is the length of the packet data following the pseudo-header 983 * (so the captured length minus dli_pktlen is the length of the 984 * pseudo-header, assuming the entire pseudo-header was captured). 985 * 986 * dli_ifindex is the interface index of the interface on which the 987 * packet arrived. 988 * 989 * dli_grifindex is the group interface index number (for IPMP interfaces). 990 * 991 * dli_zsrc is the zone identifier for the source of the packet. 992 * 993 * dli_zdst is the zone identifier for the destination of the packet. 994 * 995 * A zone number of 0 is the global zone; a zone number of 0xffffffff 996 * means that the packet arrived from another host on the network, not 997 * from another zone on the same machine. 998 * 999 * An IPv4 or IPv6 datagram follows the pseudo-header; dli_family indicates 1000 * which of those it is. 1001 */ 1002 #define DLT_IPNET 226 1003 1004 /* 1005 * CAN (Controller Area Network) frames, with a pseudo-header as supplied 1006 * by Linux SocketCAN. See Documentation/networking/can.txt in the Linux 1007 * source. 1008 * 1009 * Requested by Felix Obenhuber <[email protected]>. 1010 */ 1011 #define DLT_CAN_SOCKETCAN 227 1012 1013 /* 1014 * Raw IPv4/IPv6; different from DLT_RAW in that the DLT_ value specifies 1015 * whether it's v4 or v6. Requested by Darren Reed <[email protected]>. 1016 */ 1017 #define DLT_IPV4 228 1018 #define DLT_IPV6 229 1019 1020 /* 1021 * IEEE 802.15.4, exactly as it appears in the spec (no padding, no 1022 * nothing), and with no FCS at the end of the frame; requested by 1023 * Jon Smirl <[email protected]>. 1024 */ 1025 #define DLT_IEEE802_15_4_NOFCS 230 1026 1027 /* 1028 * Raw D-Bus: 1029 * 1030 * http://www.freedesktop.org/wiki/Software/dbus 1031 * 1032 * messages: 1033 * 1034 * http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-messages 1035 * 1036 * starting with the endianness flag, followed by the message type, etc., 1037 * but without the authentication handshake before the message sequence: 1038 * 1039 * http://dbus.freedesktop.org/doc/dbus-specification.html#auth-protocol 1040 * 1041 * Requested by Martin Vidner <[email protected]>. 1042 */ 1043 #define DLT_DBUS 231 1044 1045 /* 1046 * Juniper-private data link type, as per request from 1047 * Hannes Gredler <[email protected]>. 1048 */ 1049 #define DLT_JUNIPER_VS 232 1050 #define DLT_JUNIPER_SRX_E2E 233 1051 #define DLT_JUNIPER_FIBRECHANNEL 234 1052 1053 /* 1054 * DVB-CI (DVB Common Interface for communication between a PC Card 1055 * module and a DVB receiver). See 1056 * 1057 * http://www.kaiser.cx/pcap-dvbci.html 1058 * 1059 * for the specification. 1060 * 1061 * Requested by Martin Kaiser <[email protected]>. 1062 */ 1063 #define DLT_DVB_CI 235 1064 1065 /* 1066 * Variant of 3GPP TS 27.010 multiplexing protocol (similar to, but 1067 * *not* the same as, 27.010). Requested by Hans-Christoph Schemmel 1068 * <[email protected]>. 1069 */ 1070 #define DLT_MUX27010 236 1071 1072 /* 1073 * STANAG 5066 D_PDUs. Requested by M. Baris Demiray 1074 * <[email protected]>. 1075 */ 1076 #define DLT_STANAG_5066_D_PDU 237 1077 1078 /* 1079 * Juniper-private data link type, as per request from 1080 * Hannes Gredler <[email protected]>. 1081 */ 1082 #define DLT_JUNIPER_ATM_CEMIC 238 1083 1084 /* 1085 * NetFilter LOG messages 1086 * (payload of netlink NFNL_SUBSYS_ULOG/NFULNL_MSG_PACKET packets) 1087 * 1088 * Requested by Jakub Zawadzki <[email protected]> 1089 */ 1090 #define DLT_NFLOG 239 1091 1092 /* 1093 * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type 1094 * for Ethernet packets with a 4-byte pseudo-header and always 1095 * with the payload including the FCS, as supplied by their 1096 * netANALYZER hardware and software. 1097 * 1098 * Requested by Holger P. Frommer <[email protected]> 1099 */ 1100 #define DLT_NETANALYZER 240 1101 1102 /* 1103 * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type 1104 * for Ethernet packets with a 4-byte pseudo-header and FCS and 1105 * with the Ethernet header preceded by 7 bytes of preamble and 1106 * 1 byte of SFD, as supplied by their netANALYZER hardware and 1107 * software. 1108 * 1109 * Requested by Holger P. Frommer <[email protected]> 1110 */ 1111 #define DLT_NETANALYZER_TRANSPARENT 241 1112 1113 /* 1114 * IP-over-Infiniband, as specified by RFC 4391. 1115 * 1116 * Requested by Petr Sumbera <[email protected]>. 1117 */ 1118 #define DLT_IPOIB 242 1119 1120 /* 1121 * MPEG-2 transport stream (ISO 13818-1/ITU-T H.222.0). 1122 * 1123 * Requested by Guy Martin <[email protected]>. 1124 */ 1125 #define DLT_MPEG_2_TS 243 1126 1127 /* 1128 * ng4T GmbH's UMTS Iub/Iur-over-ATM and Iub/Iur-over-IP format as 1129 * used by their ng40 protocol tester. 1130 * 1131 * Requested by Jens Grimmer <[email protected]>. 1132 */ 1133 #define DLT_NG40 244 1134 1135 /* 1136 * Pseudo-header giving adapter number and flags, followed by an NFC 1137 * (Near-Field Communications) Logical Link Control Protocol (LLCP) PDU, 1138 * as specified by NFC Forum Logical Link Control Protocol Technical 1139 * Specification LLCP 1.1. 1140 * 1141 * Requested by Mike Wakerly <[email protected]>. 1142 */ 1143 #define DLT_NFC_LLCP 245 1144 1145 /* 1146 * USB packets, beginning with a Darwin (macOS, etc.) USB header. 1147 */ 1148 #define DLT_USB_DARWIN 266 1149 1150 #define DLT_MATCHING_MAX 266 /* highest value in the "matching" range */ 1151 1152 #if !defined(DRIVERKIT) 1153 /* 1154 * The instruction encodings. 1155 */ 1156 /* instruction classes */ 1157 #define BPF_CLASS(code) ((code) & 0x07) 1158 #define BPF_LD 0x00 1159 #define BPF_LDX 0x01 1160 #define BPF_ST 0x02 1161 #define BPF_STX 0x03 1162 #define BPF_ALU 0x04 1163 #define BPF_JMP 0x05 1164 #define BPF_RET 0x06 1165 #define BPF_MISC 0x07 1166 1167 /* ld/ldx fields */ 1168 #define BPF_SIZE(code) ((code) & 0x18) 1169 #define BPF_W 0x00 1170 #define BPF_H 0x08 1171 #define BPF_B 0x10 1172 #define BPF_MODE(code) ((code) & 0xe0) 1173 #define BPF_IMM 0x00 1174 #define BPF_ABS 0x20 1175 #define BPF_IND 0x40 1176 #define BPF_MEM 0x60 1177 #define BPF_LEN 0x80 1178 #define BPF_MSH 0xa0 1179 1180 /* alu/jmp fields */ 1181 #define BPF_OP(code) ((code) & 0xf0) 1182 #define BPF_ADD 0x00 1183 #define BPF_SUB 0x10 1184 #define BPF_MUL 0x20 1185 #define BPF_DIV 0x30 1186 #define BPF_OR 0x40 1187 #define BPF_AND 0x50 1188 #define BPF_LSH 0x60 1189 #define BPF_RSH 0x70 1190 #define BPF_NEG 0x80 1191 #define BPF_JA 0x00 1192 #define BPF_JEQ 0x10 1193 #define BPF_JGT 0x20 1194 #define BPF_JGE 0x30 1195 #define BPF_JSET 0x40 1196 #define BPF_SRC(code) ((code) & 0x08) 1197 #define BPF_K 0x00 1198 #define BPF_X 0x08 1199 1200 /* ret - BPF_K and BPF_X also apply */ 1201 #define BPF_RVAL(code) ((code) & 0x18) 1202 #define BPF_A 0x10 1203 1204 /* misc */ 1205 #define BPF_MISCOP(code) ((code) & 0xf8) 1206 #define BPF_TAX 0x00 1207 #define BPF_TXA 0x80 1208 1209 /* 1210 * Number of scratch memory words (for BPF_LD|BPF_MEM and BPF_ST). 1211 */ 1212 #define BPF_MEMWORDS 16 1213 1214 /* 1215 * The instruction data structure. 1216 */ 1217 struct bpf_insn { 1218 u_short code; 1219 u_char jt; 1220 u_char jf; 1221 bpf_u_int32 k; 1222 }; 1223 1224 /* 1225 * Macros for insn array initializers. 1226 */ 1227 #define BPF_STMT(code, k) { (u_short)(code), 0, 0, k } 1228 #define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k } 1229 1230 #pragma pack(4) 1231 1232 /* 1233 * Structure to retrieve available DLTs for the interface. 1234 */ 1235 struct bpf_dltlist { 1236 u_int32_t bfl_len; /* number of bfd_list array */ 1237 union { 1238 u_int32_t *bflu_list; /* array of DLTs */ 1239 u_int64_t bflu_pad; 1240 } bfl_u; 1241 }; 1242 #define bfl_list bfl_u.bflu_list 1243 1244 #pragma pack() 1245 1246 #endif /* !defined(DRIVERKIT) */ 1247 1248 #if defined(DRIVERKIT) || defined(KERNEL) 1249 #ifndef BPF_TAP_MODE_T 1250 #define BPF_TAP_MODE_T 1251 /*! 1252 * @enum BPF tap mode 1253 * @abstract Constants defining interface families. 1254 * @constant BPF_MODE_DISABLED Disable bpf. 1255 * @constant BPF_MODE_INPUT Enable input only. 1256 * @constant BPF_MODE_OUTPUT Enable output only. 1257 * @constant BPF_MODE_INPUT_OUTPUT Enable input and output. 1258 */ 1259 1260 enum { 1261 BPF_MODE_DISABLED = 0, 1262 BPF_MODE_INPUT = 1, 1263 BPF_MODE_OUTPUT = 2, 1264 BPF_MODE_INPUT_OUTPUT = 3 1265 }; 1266 /*! 1267 * @typedef bpf_tap_mode 1268 * @abstract Mode for tapping. BPF_MODE_DISABLED/BPF_MODE_INPUT_OUTPUT etc. 1269 */ 1270 typedef uint32_t bpf_tap_mode; 1271 #endif /* !BPF_TAP_MODE_T */ 1272 #endif /* defined(DRIVERKIT) || defined(KERNEL) */ 1273 1274 #ifdef KERNEL 1275 /*! 1276 * @typedef bpf_send_func 1277 * @discussion bpf_send_func is called when a bpf file descriptor is 1278 * used to send a raw packet on the interface. The mbuf and data 1279 * link type are specified. The callback is responsible for 1280 * releasing the mbuf whether or not it returns an error. 1281 * @param interface The interface the packet is being sent on. 1282 * @param data_link_type The data link type the bpf device is attached to. 1283 * @param packet The packet to be sent. 1284 */ 1285 typedef errno_t (*bpf_send_func)(ifnet_t interface, u_int32_t data_link_type, 1286 mbuf_t packet); 1287 1288 /*! 1289 * @typedef bpf_tap_func 1290 * @discussion bpf_tap_func is called when the tap state of the 1291 * interface changes. This happens when a bpf device attaches to an 1292 * interface or detaches from an interface. The tap mode will join 1293 * together (bit or) the modes of all bpf devices using that 1294 * interface for that dlt. If you return an error from this 1295 * function, the bpf device attach attempt that triggered the tap 1296 * will fail. If this function was called bacuse the tap state was 1297 * decreasing (tap in or out is stopping), the error will be 1298 * ignored. 1299 * @param interface The interface being tapped. 1300 * @param data_link_type The data link type being tapped. 1301 * @param direction The direction of the tap. 1302 */ 1303 typedef errno_t (*bpf_tap_func)(ifnet_t interface, u_int32_t data_link_type, 1304 bpf_tap_mode direction); 1305 1306 /*! 1307 * @function bpfattach 1308 * @discussion Registers an interface with BPF. This allows bpf devices 1309 * to attach to your interface to capture packets. Your interface 1310 * will be unregistered automatically when your interface is 1311 * detached. 1312 * @param interface The interface to register with BPF. 1313 * @param data_link_type The data link type of the interface. See the 1314 * DLT_* defines in bpf.h. 1315 * @param header_length The length, in bytes, of the data link header. 1316 */ 1317 extern void bpfattach(ifnet_t interface, u_int data_link_type, 1318 u_int header_length); 1319 1320 /*! 1321 * @function bpf_attach 1322 * @discussion Registers an interface with BPF. This allows bpf devices 1323 * to attach to your interface to capture and transmit packets. 1324 * Your interface will be unregistered automatically when your 1325 * interface is detached. You may register multiple times with 1326 * different data link types. An 802.11 interface would use this to 1327 * allow clients to pick whether they want just an ethernet style 1328 * frame or the 802.11 wireless headers as well. The first dlt you 1329 * register will be considered the default. Any bpf device attaches 1330 * that do not specify a data link type will use the default. 1331 * @param interface The interface to register with BPF. 1332 * @param data_link_type The data link type of the interface. See the 1333 * DLT_* defines in bpf.h. 1334 * @param header_length The length, in bytes, of the data link header. 1335 * @param send See the bpf_send_func described above. 1336 * @param tap See the bpf_tap_func described above. 1337 */ 1338 extern errno_t bpf_attach(ifnet_t interface, u_int32_t data_link_type, 1339 u_int32_t header_length, bpf_send_func send, bpf_tap_func tap); 1340 1341 /*! 1342 * @function bpf_tap_in 1343 * @discussion Call this function when your interface receives a 1344 * packet. This function will check if any bpf devices need a 1345 * a copy of the packet. 1346 * @param interface The interface the packet was received on. 1347 * @param dlt The data link type of the packet. 1348 * @param packet The packet received. 1349 * @param header An optional pointer to a header that will be prepended. 1350 * @param header_len If the header was specified, the length of the header. 1351 */ 1352 extern void bpf_tap_in(ifnet_t interface, u_int32_t dlt, mbuf_t packet, 1353 void *__sized_by(header_len) header, size_t header_len); 1354 1355 /*! 1356 * @function bpf_tap_out 1357 * @discussion Call this function when your interface transmits a 1358 * packet. This function will check if any bpf devices need a 1359 * a copy of the packet. 1360 * @param interface The interface the packet was or will be transmitted on. 1361 * @param dlt The data link type of the packet. 1362 * @param packet The packet received. 1363 * @param header An optional pointer to a header that will be prepended. 1364 * @param header_len If the header was specified, the length of the header. 1365 */ 1366 extern void bpf_tap_out(ifnet_t interface, u_int32_t dlt, mbuf_t packet, 1367 void *__sized_by(header_len) header, size_t header_len); 1368 1369 #endif /* KERNEL */ 1370 1371 #if defined(PRIVATE) && !defined(MODULES_SUPPORTED) 1372 #include <net/bpf_private.h> 1373 #endif /* PRIVATE && !MODULES_SUPPORTED */ 1374 1375 #endif /* _NET_BPF_H_ */ 1376