xnu-792.6.56.tar.gz

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

diff --git a/bsd/net/bpf.h b/bsd/net/bpf.h
index 1545e60745f6dafb8de9e2896431c14b44f9ee23..a9dcb8c0e1bd75cc78e2a442d5ac286f385237ea 100644 (file)
--- a/bsd/net/bpf.h
+++ b/bsd/net/bpf.h
@@ -1,10 +1,8 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
- * 
  * 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
@@ -70,6 +68,11 @@
 #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
@@ -85,7 +88,7 @@ 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
 
 /*
@@ -96,6 +99,26 @@ 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
+ */
+#if __DARWIN_ALIGN_NATURAL
+#pragma options align=natural
+#endif
+
+struct user_bpf_program {
+       u_int           bf_len;
+       user_addr_t     bf_insns;
+};
+
+#if __DARWIN_ALIGN_NATURAL
+#pragma options align=reset
+#endif
+
+#endif // KERNEL
+
 /*
  * Struct returned by BIOCGSTATS.
  */
@@ -335,26 +358,40 @@ 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    bpfdetach(struct ifnet *);
 
-void    bpfilterattach __P((int));
-u_int   bpf_filter __P((const struct bpf_insn *, u_char *, u_int, u_int));
+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 */
 
 /*