X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/91447636331957f3d9b5ca5b508f07c526b0074d..2dced7af2b695f87fe26496a3e73c219b7880cbc:/bsd/net/bpfdesc.h

diff --git a/bsd/net/bpfdesc.h b/bsd/net/bpfdesc.h
index 1958e635b..dcb9ac0af 100644
--- a/bsd/net/bpfdesc.h
+++ b/bsd/net/bpfdesc.h
@@ -1,23 +1,29 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2014 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
@@ -70,6 +76,7 @@
  */
 
 #include <sys/select.h>
+#include <kern/thread_call.h>
 
 /*
  * Descriptor associated with each open bpf file.
@@ -90,14 +97,18 @@ struct bpf_d {
 	caddr_t		bd_fbuf;	/* free slot */
 	int 		bd_slen;	/* current length of store buffer */
 	int 		bd_hlen;	/* current length of hold buffer */
+	u_int32_t	bd_scnt;	/* number of packets in store buffer */
+	u_int32_t	bd_hcnt;	/* number of packets in hold buffer */
 
 	int		bd_bufsize;	/* absolute length of buffers */
+	int		bd_hbuf_read;	/* reading from hbuf */
+	int		bd_headdrop;	/* Keep newer packets */
 
-	struct bpf_if *	bd_bif;		/* interface descriptor */
-	u_long		bd_rtout;	/* Read timeout in 'ticks' */
+	struct bpf_if  *bd_bif;		/* interface descriptor */
+	u_int32_t	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_int32_t	bd_rcount;	/* number of packets received */
+	u_int32_t	bd_dcount;	/* number of packets dropped */
 
 	u_char		bd_promisc;	/* true if listening promiscuously */
 	u_char		bd_state;	/* idle, waiting, or timed out */
@@ -120,9 +131,42 @@ struct bpf_d {
 #endif
 	int		bd_hdrcmplt;	/* false to fill in src lladdr automatically */
 	int		bd_seesent;	/* true if bpf should see sent packets */
+	int		bd_oflags;	/* device open flags */
+	thread_call_t	bd_thread_call; /* for BPF timeouts with select */
+#if CONFIG_MACF_NET
+	struct label *	bd_label;	/* MAC label for descriptor */
+#endif
+	int		bd_traffic_class; /* traffic service class */
+	int		bd_flags;	/* flags */
 
+	int		bd_refcnt;
+#define	BPF_REF_HIST	4		/* how many callers to keep around */
+	void		*bd_ref_lr[BPF_REF_HIST];
+	void		*bd_unref_lr[BPF_REF_HIST];
+	int		bd_next_ref_lr;
+	int		bd_next_unref_lr;
 };
 
+/* Values for bd_state */
+#define BPF_IDLE		0    /* no select in progress or kqueue pending */
+#define BPF_WAITING		1    /* waiting for read timeout in select/kqueue */
+#define BPF_TIMED_OUT 	2	 /* read timeout has expired in select/kqueue */
+#define BPF_DRAINING	3	 /* waiting for timeout routine to finish during close */
+
+/* Test whether a BPF is ready for read(). */
+#define bpf_ready(bd)	((bd)->bd_hlen != 0 ||		\
+			 (((bd)->bd_immediate || (bd)->bd_state == BPF_TIMED_OUT) && \
+			  (bd)->bd_slen != 0))
+
+/* Values for bd_flags */
+#define	BPF_EXTENDED_HDR	0x01	/* process req. the extended header */
+#define	BPF_WANT_PKTAP		0x02	/* knows how to handle DLT_PKTAP */
+#define	BPF_FINALIZE_PKTAP	0x04	/* finalize pktap header on read */
+#define	BPF_KNOTE		0x08	/* kernel note attached */
+#define	BPF_DETACHING		0x10	/* bpf_d is being detached */
+#define	BPF_DETACHED		0x20	/* bpf_d is detached */
+#define	BPF_CLOSING		0x40	/* bpf_d is being closed */
+
 /*
  * Descriptor associated with each attached hardware interface.
  */
@@ -131,7 +175,10 @@ struct bpf_if {
 	struct bpf_d *bif_dlist;	/* descriptor list */
 	u_int bif_dlt;			/* link layer type */
 	u_int bif_hdrlen;		/* length of header (with padding) */
+	u_int bif_exthdrlen;		/* length of ext header */
 	struct ifnet *bif_ifp;		/* corresponding interface */
+	bpf_send_func	bif_send;
+	bpf_tap_func	bif_tap;
 };
 
 #endif /* KERNEL_PRIVATE */