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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 | /* * Copyright (c) 1998-2000 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@ */ /* * AppleBPF.cpp - BPF driver class implementation. * */ // Need to check with Simon on User/Client interface and how to do // PostLoad, and check on IOBSD (IONeededResource) #include <assert.h> #include <IOKit/IOLib.h> #include "AppleBPF.h" extern "C" { #include <sys/time.h> #include <net/bpf.h> #include <net/bpfdesc.h> #include <sys/malloc.h> } //------------------------------------------------------------------------ #define super IOService OSDefineMetaClassAndStructors(AppleBPF, IOService); //------------------------------------------------------------------------ // ----------------------------------------------------------------------- // // This is the first method to be called when an object of this class is // instantiated. // bool AppleBPF::init(OSDictionary * properties) { if (!super::init(properties)) { IOLog("BPF: super init failed\n"); return false; } // Do class specific initialization here. Probably not necessary for // this driver. // IOLog("BPF: super init succeeded\n"); return true; // return 'true' for success, 'false' for failure. } // ----------------------------------------------------------------------- // // The driver has been matched, start it up. Do most initialization and // resource allocation here. // bool AppleBPF::start(IOService * provider) { int i; OSNumber *val; extern struct bpf_d *bpf_dtab; extern int nbpfilter; if (!super::start(provider)) { IOLog("BPF: super start failed\n"); return false; } val = OSDynamicCast(OSNumber, getObject("IODevCount")); if (val == 0) nbpfilter = DEFAULT_BPF_DEV_COUNT; else nbpfilter = val->unsigned32BitValue(); // bpfops.bpf_tap = bpf_tap; // bpfops.bpf_mtap = bpf_mtap; bpf_dtab = (struct bpf_d *)IOMalloc(sizeof (struct bpf_d) * nbpfilter); if (bpf_dtab == NULL) { IOLog("%s: couldn't get memory for descriptor table\n", getName()); return false; } /* * Mark all the descriptors free */ for (i = 0; i < nbpfilter; ++i) D_MARKFREE(&bpf_dtab[i]); // IOLog("AppleBPF::start() called\n"); return true; // return 'true' for success, 'false' for failure. } // ----------------------------------------------------------------------- // // Release all resources before the driver goes away. // void AppleBPF::stop(IOService * provider) { extern struct bpf_d *bpf_dtab; extern int nbpfilter; IOFree((void *)bpf_dtab, sizeof (struct bpf_d) * nbpfilter); } |