xnu-792.22.5.tar.gz

[apple/xnu.git] / bsd / net / bpf.h

diff --git a/bsd/net/bpf.h b/bsd/net/bpf.h
index 89e9163c63a2c7c3678a02a3fdd157aefeb1089d..fc68f2f56dd5260b093e762cc9002f6456d0bbe3 100644 (file)
--- a/bsd/net/bpf.h
+++ b/bsd/net/bpf.h
@@ -1,23 +1,29 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2005 Apple Computer, 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
@@ -67,6 +73,11 @@
 #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
@@ -82,7 +93,7 @@ typedef       u_int32_t bpf_u_int32;
 #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
 
 /*
@@ -93,6 +104,18 @@ struct bpf_program {
        struct bpf_insn *bf_insns;
 };
 
+#ifdef KERNEL
+/* 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 user_bpf_program {
+       u_int           bf_len;
+       user_addr_t     bf_insns __attribute__((aligned(8)));
+};
+
+#endif // KERNEL
+
 /*
  * Struct returned by BIOCGSTATS.
  */
@@ -332,26 +355,40 @@ struct bpf_insn {
 #define BPF_STMT(code, k) { (u_short)(code), 0, 0, k }
 #define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k }
 
+#ifdef KERNEL_PRIVATE
 /* Forward declerations */
 struct ifnet;
 struct mbuf;
 
-#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 *));
+int     bpf_validate(const struct bpf_insn *, int);
+void    bpf_tap(struct ifnet *, u_char *, u_int);
+void    bpf_mtap(struct ifnet *, struct mbuf *);
 
-void    bpfilterattach __P((int));
-u_int   bpf_filter __P((const struct bpf_insn *, u_char *, u_int, u_int));
+void    bpfdetach(struct ifnet *);
+
+void    bpfilterattach(int);
+u_int   bpf_filter(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 */
+
+#endif /* KERNEL_PRIVATE */
+
+#ifdef KERNEL
+/*!
+       @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);
 #endif /* KERNEL */
 
 /*