/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1990, 1991, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from the Stanford/CMU enet packet filter, * (net/enet.c) distributed as part of 4.3BSD, and code contributed * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence * Berkeley Laboratory. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)bpfdesc.h 8.1 (Berkeley) 6/10/93 * * $FreeBSD: src/sys/net/bpfdesc.h,v 1.14.2.1 2000/03/19 05:55:36 rwatson Exp $ */ #ifndef _NET_BPFDESC_H_ #define _NET_BPFDESC_H_ #include <sys/appleapiopts.h> #ifdef KERNEL_PRIVATE /* * The items in this header file should be wrapped in #ifdef KERNEL. */ #include <sys/select.h> /* * Descriptor associated with each open bpf file. */ struct bpf_d { struct bpf_d *bd_next; /* Linked list of descriptors */ /* * Buffer slots: two mbuf clusters buffer the incoming packets. * The model has three slots. Sbuf is always occupied. * sbuf (store) - Receive interrupt puts packets here. * hbuf (hold) - When sbuf is full, put cluster here and * wakeup read (replace sbuf with fbuf). * fbuf (free) - When read is done, put cluster here. * On receiving, if sbuf is full and fbuf is 0, packet is dropped. */ caddr_t bd_sbuf; /* store slot */ caddr_t bd_hbuf; /* hold slot */ caddr_t bd_fbuf; /* free slot */ int bd_slen; /* current length of store buffer */ int bd_hlen; /* current length of hold buffer */ int bd_bufsize; /* absolute length of buffers */ struct bpf_if * bd_bif; /* interface descriptor */ u_long bd_rtout; /* Read timeout in 'ticks' */ struct bpf_insn *bd_filter; /* filter code */ u_long bd_rcount; /* number of packets received */ u_long bd_dcount; /* number of packets dropped */ u_char bd_promisc; /* true if listening promiscuously */ u_char bd_state; /* idle, waiting, or timed out */ u_char bd_immediate; /* true to return on packet arrival */ int bd_async; /* non-zero if packet reception should generate signal */ int bd_sig; /* signal to send upon packet reception */ #ifdef __APPLE__ pid_t bd_sigio; #else struct sigio * bd_sigio; /* information for async I/O */ #endif #if BSD < 199103 u_char bd_selcoll; /* true if selects collide */ int bd_timedout; struct proc * bd_selproc; /* process that last selected us */ #else u_char bd_pad; /* explicit alignment */ struct selinfo bd_sel; /* bsd select info */ #endif int bd_hdrcmplt; /* false to fill in src lladdr automatically */ int bd_seesent; /* true if bpf should see sent packets */ }; /* * Descriptor associated with each attached hardware interface. */ struct bpf_if { struct bpf_if *bif_next; /* list of all interfaces */ struct bpf_d *bif_dlist; /* descriptor list */ u_int bif_dlt; /* link layer type */ u_int bif_hdrlen; /* length of header (with padding) */ struct ifnet *bif_ifp; /* corresponding interface */ }; #endif /* KERNEL_PRIVATE */ #endif