/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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 file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The 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.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Copyright (c) 1990, 1991, 1993
*
* $FreeBSD: src/sys/net/bpf.h,v 1.21.2.3 2001/08/01 00:23:13 fenner Exp $
*/
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2006 to introduce
+ * support for mandatory and extensible security protections. This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
#ifndef _NET_BPF_H_
#define _NET_BPF_H_
#include <sys/appleapiopts.h>
#include <sys/types.h>
#include <sys/time.h>
+#include <sys/cdefs.h>
+
+#ifdef KERNEL
+#include <sys/kernel_types.h>
+#endif
/* BSD style release date */
#define BPF_RELEASE 199606
* Alignment macros. BPF_WORDALIGN rounds up to the next
* even multiple of BPF_ALIGNMENT.
*/
-#define BPF_ALIGNMENT sizeof(long)
+#define BPF_ALIGNMENT sizeof(int32_t)
#define BPF_WORDALIGN(x) (((x)+(BPF_ALIGNMENT-1))&~(BPF_ALIGNMENT-1))
#define BPF_MAXINSNS 512
-#define BPF_MAXBUFSIZE 0x8000
+#define BPF_MAXBUFSIZE 0x80000
#define BPF_MINBUFSIZE 32
/*
struct bpf_insn *bf_insns;
};
+#ifdef KERNEL_PRIVATE
+/* LP64 version of bpf_program. all pointers
+ * grow when we're dealing with a 64-bit process.
+ * WARNING - keep in sync with bpf_program
+ */
+struct bpf_program64 {
+ u_int bf_len;
+ user_addr_t bf_insns __attribute__((aligned(8)));
+};
+
+#endif // KERNEL_PRIVATE
+
/*
* Struct returned by BIOCGSTATS.
*/
u_short bv_major;
u_short bv_minor;
};
+#if defined(__LP64__)
+#define __need_struct_timeval32
+#include <sys/_structs.h>
+#define BPF_TIMEVAL timeval32
+#else
+#define BPF_TIMEVAL timeval
+#endif
/* Current version number of filter architecture. */
#define BPF_MAJOR_VERSION 1
#define BPF_MINOR_VERSION 1
#define BIOCGBLEN _IOR('B',102, u_int)
#define BIOCSBLEN _IOWR('B',102, u_int)
#define BIOCSETF _IOW('B',103, struct bpf_program)
+#ifdef KERNEL_PRIVATE
+#define BIOCSETF64 _IOW('B',103, struct bpf_program64)
+#endif // KERNEL_PRIVATE
#define BIOCFLUSH _IO('B',104)
#define BIOCPROMISC _IO('B',105)
#define BIOCGDLT _IOR('B',106, u_int)
#define BIOCGETIF _IOR('B',107, struct ifreq)
#define BIOCSETIF _IOW('B',108, struct ifreq)
-#define BIOCSRTIMEOUT _IOW('B',109, struct timeval)
-#define BIOCGRTIMEOUT _IOR('B',110, struct timeval)
+#define BIOCSRTIMEOUT _IOW('B',109, struct BPF_TIMEVAL)
+#define BIOCGRTIMEOUT _IOR('B',110, struct BPF_TIMEVAL)
#define BIOCGSTATS _IOR('B',111, struct bpf_stat)
#define BIOCIMMEDIATE _IOW('B',112, u_int)
#define BIOCVERSION _IOR('B',113, struct bpf_version)
#define BIOCSHDRCMPLT _IOW('B',117, u_int)
#define BIOCGSEESENT _IOR('B',118, u_int)
#define BIOCSSEESENT _IOW('B',119, u_int)
+#define BIOCSDLT _IOW('B',120, u_int)
+#define BIOCGDLTLIST _IOWR('B',121, struct bpf_dltlist)
/*
* Structure prepended to each packet.
*/
struct bpf_hdr {
- struct timeval bh_tstamp; /* time stamp */
+ struct BPF_TIMEVAL bh_tstamp; /* time stamp */
bpf_u_int32 bh_caplen; /* length of captured portion */
bpf_u_int32 bh_datalen; /* original length of packet */
u_short bh_hdrlen; /* length of bpf header (this struct
#define DLT_FDDI 10 /* FDDI */
#define DLT_ATM_RFC1483 11 /* LLC/SNAP encapsulated atm */
#define DLT_RAW 12 /* raw IP */
+#define DLT_APPLE_IP_OVER_IEEE1394 138
/*
* These are values from BSD/OS's "bpf.h".
#define BPF_STMT(code, k) { (u_short)(code), 0, 0, k }
#define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k }
+#pragma pack(4)
+
+/*
+ * Structure to retrieve available DLTs for the interface.
+ */
+struct bpf_dltlist {
+ u_int32_t bfl_len; /* number of bfd_list array */
+ union {
+ u_int32_t *bflu_list; /* array of DLTs */
+ u_int64_t bflu_pad;
+ } bfl_u;
+};
+#define bfl_list bfl_u.bflu_list
+
+#pragma pack()
+
+#ifdef KERNEL_PRIVATE
/* Forward declerations */
struct ifnet;
struct mbuf;
+int bpf_validate(const struct bpf_insn *, int);
+void bpfdetach(struct ifnet *);
+void bpfilterattach(int);
+u_int bpf_filter(const struct bpf_insn *, u_char *, u_int, u_int);
+
+#endif /* KERNEL_PRIVATE */
+
#ifdef KERNEL
-#ifdef __APPLE_API_UNSTABLE
-int bpf_validate __P((const struct bpf_insn *, int));
-void bpf_tap __P((struct ifnet *, u_char *, u_int));
-void bpf_mtap __P((struct ifnet *, struct mbuf *));
-void bpfattach __P((struct ifnet *, u_int, u_int));
-void bpfdetach __P((struct ifnet *));
-
-void bpfilterattach __P((int));
-u_int bpf_filter __P((const struct bpf_insn *, u_char *, u_int, u_int));
-
-#ifdef __APPLE__
-#define BPF_TAP(x, y, z) bpf_tap(x,y,z)
-#define BPF_MTAP(x, y) bpf_mtap(x, y)
-#endif /* __APPLE__ */
-#endif /* __APPLE_API_UNSTABLE */
+#ifndef BPF_TAP_MODE_T
+#define BPF_TAP_MODE_T
+/*!
+ @enum BPF tap mode
+ @abstract Constants defining interface families.
+ @constant BPF_MODE_DISABLED Disable bpf.
+ @constant BPF_MODE_INPUT Enable input only.
+ @constant BPF_MODE_OUTPUT Enable output only.
+ @constant BPF_MODE_INPUT_OUTPUT Enable input and output.
+*/
+
+enum {
+ BPF_MODE_DISABLED = 0,
+ BPF_MODE_INPUT = 1,
+ BPF_MODE_OUTPUT = 2,
+ BPF_MODE_INPUT_OUTPUT = 3
+};
+/*!
+ @typedef bpf_tap_mode
+ @abstract Mode for tapping. BPF_MODE_DISABLED/BPF_MODE_INPUT_OUTPUT etc.
+*/
+typedef u_int32_t bpf_tap_mode;
+#endif /* !BPF_TAP_MODE_T */
+
+/*!
+ @typedef bpf_send_func
+ @discussion bpf_send_func is called when a bpf file descriptor is
+ used to send a raw packet on the interface. The mbuf and data
+ link type are specified. The callback is responsible for
+ releasing the mbuf whether or not it returns an error.
+ @param interface The interface the packet is being sent on.
+ @param dlt The data link type the bpf device is attached to.
+ @param packet The packet to be sent.
+ */
+typedef errno_t (*bpf_send_func)(ifnet_t interface, u_int32_t data_link_type,
+ mbuf_t packet);
+
+/*!
+ @typedef bpf_tap_func
+ @discussion bpf_tap_func is called when the tap state of the
+ interface changes. This happens when a bpf device attaches to an
+ interface or detaches from an interface. The tap mode will join
+ together (bit or) the modes of all bpf devices using that
+ interface for that dlt. If you return an error from this
+ function, the bpf device attach attempt that triggered the tap
+ will fail. If this function was called bacuse the tap state was
+ decreasing (tap in or out is stopping), the error will be
+ ignored.
+ @param interface The interface being tapped.
+ @param dlt The data link type being tapped.
+ @param direction The direction of the tap.
+ */
+typedef errno_t (*bpf_tap_func)(ifnet_t interface, u_int32_t data_link_type,
+ bpf_tap_mode direction);
+
+/*!
+ @function bpfattach
+ @discussion Registers an interface with BPF. This allows bpf devices
+ to attach to your interface to capture packets. Your interface
+ will be unregistered automatically when your interface is
+ detached.
+ @param interface The interface to register with BPF.
+ @param data_link_type The data link type of the interface. See the
+ DLT_* defines in bpf.h.
+ @param header_length The length, in bytes, of the data link header.
+ */
+void bpfattach(ifnet_t interface, u_int data_link_type, u_int header_length);
+
+/*!
+ @function bpf_attach
+ @discussion Registers an interface with BPF. This allows bpf devices
+ to attach to your interface to capture and transmit packets.
+ Your interface will be unregistered automatically when your
+ interface is detached. You may register multiple times with
+ different data link types. An 802.11 interface would use this to
+ allow clients to pick whether they want just an ethernet style
+ frame or the 802.11 wireless headers as well. The first dlt you
+ register will be considered the default. Any bpf device attaches
+ that do not specify a data link type will use the default.
+ @param interface The interface to register with BPF.
+ @param data_link_type The data link type of the interface. See the
+ DLT_* defines in bpf.h.
+ @param header_length The length, in bytes, of the data link header.
+ */
+errno_t bpf_attach(ifnet_t interface, u_int32_t data_link_type,
+ u_int32_t header_length, bpf_send_func send,
+ bpf_tap_func tap);
+
+/*!
+ @function bpf_tap_in
+ @discussion Call this function when your interface receives a
+ packet. This function will check if any bpf devices need a
+ a copy of the packet.
+ @param interface The interface the packet was received on.
+ @param dlt The data link type of the packet.
+ @param packet The packet received.
+ @param header An optional pointer to a header that will be prepended.
+ @param headerlen If the header was specified, the length of the header.
+ */
+void bpf_tap_in(ifnet_t interface, u_int32_t dlt, mbuf_t packet,
+ void* header, size_t header_len);
+
+/*!
+ @function bpf_tap_out
+ @discussion Call this function when your interface trasmits a
+ packet. This function will check if any bpf devices need a
+ a copy of the packet.
+ @param interface The interface the packet was or will be transmitted on.
+ @param dlt The data link type of the packet.
+ @param packet The packet received.
+ @param header An optional pointer to a header that will be prepended.
+ @param headerlen If the header was specified, the length of the header.
+ */
+void bpf_tap_out(ifnet_t interface, u_int32_t dlt, mbuf_t packet,
+ void* header, size_t header_len);
+
#endif /* KERNEL */
/*
projects / apple / xnu.git / blobdiff