xnu-2050.18.24.tar.gz

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

diff --git a/bsd/net/bpfdesc.h b/bsd/net/bpfdesc.h
index 1958e635b34960492d6771b4db2b3fbea63f4dce..d96300bc6c8482d05c91fe3cea4ce5dbbd236662 100644 (file)
--- 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) 2000-2011 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.
@@ -93,11 +100,11 @@ struct bpf_d {
 
        int             bd_bufsize;     /* absolute length of buffers */
 
-       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 +127,27 @@ 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_extendedhdr; /* process req. the extended header */
 };
 
+/* 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))
+
+
 /*
  * Descriptor associated with each attached hardware interface.
  */
@@ -131,7 +156,10 @@ 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 */