| | 1 | /* |
| | 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. |
| | 7 | * |
| | 8 | * This file contains Original Code and/or Modifications of Original Code |
| | 9 | * as defined in and that are subject to the Apple Public Source License |
| | 10 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 11 | * compliance with the License. Please obtain a copy of the License at |
| | 12 | * http://www.opensource.apple.com/apsl/ and read it before using this |
| | 13 | * file. |
| | 14 | * |
| | 15 | * The Original Code and all software distributed under the License are |
| | 16 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 17 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 18 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 19 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 20 | * Please see the License for the specific language governing rights and |
| | 21 | * limitations under the License. |
| | 22 | * |
| | 23 | * @APPLE_LICENSE_HEADER_END@ |
| | 24 | */ |
| | 25 | /* |
| | 26 | * Copyright (c) 1990, 1991, 1993 |
| | 27 | * The Regents of the University of California. All rights reserved. |
| | 28 | * |
| | 29 | * This code is derived from the Stanford/CMU enet packet filter, |
| | 30 | * (net/enet.c) distributed as part of 4.3BSD, and code contributed |
| | 31 | * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence |
| | 32 | * Berkeley Laboratory. |
| | 33 | * |
| | 34 | * Redistribution and use in source and binary forms, with or without |
| | 35 | * modification, are permitted provided that the following conditions |
| | 36 | * are met: |
| | 37 | * 1. Redistributions of source code must retain the above copyright |
| | 38 | * notice, this list of conditions and the following disclaimer. |
| | 39 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 40 | * notice, this list of conditions and the following disclaimer in the |
| | 41 | * documentation and/or other materials provided with the distribution. |
| | 42 | * 3. All advertising materials mentioning features or use of this software |
| | 43 | * must display the following acknowledgement: |
| | 44 | * This product includes software developed by the University of |
| | 45 | * California, Berkeley and its contributors. |
| | 46 | * 4. Neither the name of the University nor the names of its contributors |
| | 47 | * may be used to endorse or promote products derived from this software |
| | 48 | * without specific prior written permission. |
| | 49 | * |
| | 50 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 51 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 52 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 53 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 54 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 55 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 56 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 57 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 58 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 59 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 60 | * SUCH DAMAGE. |
| | 61 | * |
| | 62 | * @(#)bpfdesc.h 8.1 (Berkeley) 6/10/93 |
| | 63 | * |
| | 64 | * $FreeBSD: src/sys/net/bpfdesc.h,v 1.14.2.1 2000/03/19 05:55:36 rwatson Exp $ |
| | 65 | */ |
| | 66 | |
| | 67 | #ifndef _NET_BPFDESC_H_ |
| | 68 | #define _NET_BPFDESC_H_ |
| | 69 | #include <sys/appleapiopts.h> |
| | 70 | #ifdef __APPLE_API_PRIVATE |
| | 71 | /* |
| | 72 | * The items in this header file should be wrapped in #ifdef KERNEL. |
| | 73 | */ |
| | 74 | |
| | 75 | #include <sys/select.h> |
| | 76 | |
| | 77 | /* |
| | 78 | * Descriptor associated with each open bpf file. |
| | 79 | */ |
| | 80 | struct bpf_d { |
| | 81 | struct bpf_d *bd_next; /* Linked list of descriptors */ |
| | 82 | /* |
| | 83 | * Buffer slots: two mbuf clusters buffer the incoming packets. |
| | 84 | * The model has three slots. Sbuf is always occupied. |
| | 85 | * sbuf (store) - Receive interrupt puts packets here. |
| | 86 | * hbuf (hold) - When sbuf is full, put cluster here and |
| | 87 | * wakeup read (replace sbuf with fbuf). |
| | 88 | * fbuf (free) - When read is done, put cluster here. |
| | 89 | * On receiving, if sbuf is full and fbuf is 0, packet is dropped. |
| | 90 | */ |
| | 91 | caddr_t bd_sbuf; /* store slot */ |
| | 92 | caddr_t bd_hbuf; /* hold slot */ |
| | 93 | caddr_t bd_fbuf; /* free slot */ |
| | 94 | int bd_slen; /* current length of store buffer */ |
| | 95 | int bd_hlen; /* current length of hold buffer */ |
| | 96 | |
| | 97 | int bd_bufsize; /* absolute length of buffers */ |
| | 98 | |
| | 99 | struct bpf_if * bd_bif; /* interface descriptor */ |
| | 100 | u_long bd_rtout; /* Read timeout in 'ticks' */ |
| | 101 | struct bpf_insn *bd_filter; /* filter code */ |
| | 102 | u_long bd_rcount; /* number of packets received */ |
| | 103 | u_long bd_dcount; /* number of packets dropped */ |
| | 104 | |
| | 105 | u_char bd_promisc; /* true if listening promiscuously */ |
| | 106 | u_char bd_state; /* idle, waiting, or timed out */ |
| | 107 | u_char bd_immediate; /* true to return on packet arrival */ |
| | 108 | int bd_async; /* non-zero if packet reception should generate signal */ |
| | 109 | int bd_sig; /* signal to send upon packet reception */ |
| | 110 | #ifdef __APPLE__ |
| | 111 | pid_t bd_sigio; |
| | 112 | #else |
| | 113 | struct sigio * bd_sigio; /* information for async I/O */ |
| | 114 | #endif |
| | 115 | |
| | 116 | #if BSD < 199103 |
| | 117 | u_char bd_selcoll; /* true if selects collide */ |
| | 118 | int bd_timedout; |
| | 119 | struct proc * bd_selproc; /* process that last selected us */ |
| | 120 | #else |
| | 121 | u_char bd_pad; /* explicit alignment */ |
| | 122 | struct selinfo bd_sel; /* bsd select info */ |
| | 123 | #endif |
| | 124 | int bd_hdrcmplt; /* false to fill in src lladdr automatically */ |
| | 125 | int bd_seesent; /* true if bpf should see sent packets */ |
| | 126 | |
| | 127 | }; |
| | 128 | |
| | 129 | /* |
| | 130 | * Descriptor associated with each attached hardware interface. |
| | 131 | */ |
| | 132 | struct bpf_if { |
| | 133 | struct bpf_if *bif_next; /* list of all interfaces */ |
| | 134 | struct bpf_d *bif_dlist; /* descriptor list */ |
| | 135 | u_int bif_dlt; /* link layer type */ |
| | 136 | u_int bif_hdrlen; /* length of header (with padding) */ |
| | 137 | struct ifnet *bif_ifp; /* corresponding interface */ |
| | 138 | }; |
| | 139 | |
| | 140 | #endif /* __APPLE_API_PRIVATE */ |
| | 141 | #endif |
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