/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2017 Apple Inc. All rights reserved.
*
- * @APPLE_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 Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * 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.
+ *
+ * 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.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Copyright (c) 1990, 1991, 1993
* The items in this header file should be wrapped in #ifdef KERNEL.
*/
+#include <sys/proc.h>
#include <sys/select.h>
+#include <kern/thread_call.h>
+#include <uuid/uuid.h>
/*
* Descriptor associated with each open bpf file.
*/
struct bpf_d {
- struct bpf_d *bd_next; /* Linked list of descriptors */
+ struct bpf_d *bd_next; /* Linked list of descriptors */
/*
* Buffer slots: two mbuf clusters buffer the incoming packets.
* The model has three slots. Sbuf is always occupied.
* fbuf (free) - When read is done, put cluster here.
* On receiving, if sbuf is full and fbuf is 0, packet is dropped.
*/
- caddr_t bd_sbuf; /* store slot */
- caddr_t bd_hbuf; /* hold slot */
- caddr_t bd_fbuf; /* free slot */
- int bd_slen; /* current length of store buffer */
- int bd_hlen; /* current length of hold buffer */
+ caddr_t bd_sbuf; /* store slot */
+ caddr_t bd_hbuf; /* hold slot */
+ 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_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_insn *bd_filter; /* filter code */
- u_long bd_rcount; /* number of packets received */
- u_long bd_dcount; /* number of packets dropped */
+ struct bpf_if *bd_bif; /* interface descriptor */
+ u_int32_t bd_rtout; /* Read timeout in 'ticks' */
+ struct bpf_insn *bd_filter; /* filter code */
+ 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 */
- u_char bd_immediate; /* true to return on packet arrival */
- int bd_async; /* non-zero if packet reception should generate signal */
- int bd_sig; /* signal to send upon packet reception */
+ u_char bd_promisc; /* true if listening promiscuously */
+ u_char bd_state; /* idle, waiting, or timed out */
+ u_char bd_immediate; /* true to return on packet arrival */
+ int bd_async; /* non-zero if packet reception should generate signal */
+ int bd_sig; /* signal to send upon packet reception */
#ifdef __APPLE__
- pid_t bd_sigio;
+ pid_t bd_sigio;
#else
- struct sigio * bd_sigio; /* information for async I/O */
+ struct sigio * bd_sigio; /* information for async I/O */
#endif
#if BSD < 199103
- u_char bd_selcoll; /* true if selects collide */
- int bd_timedout;
- struct proc * bd_selproc; /* process that last selected us */
+ u_char bd_selcoll; /* true if selects collide */
+ int bd_timedout;
+ struct proc * bd_selproc; /* process that last selected us */
#else
- u_char bd_pad; /* explicit alignment */
- struct selinfo bd_sel; /* bsd select info */
+ u_char bd_pad; /* explicit alignment */
+ struct selinfo bd_sel; /* bsd select info */
+#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_hdrcmplt; /* false to fill in src lladdr automatically */
- int bd_seesent; /* true if bpf should see sent packets */
+ 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;
+
+ struct proc *bd_opened_by;
+ uuid_t bd_uuid;
};
+/* 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 0x0001 /* process req. the extended header */
+#define BPF_WANT_PKTAP 0x0002 /* knows how to handle DLT_PKTAP */
+#define BPF_FINALIZE_PKTAP 0x0004 /* finalize pktap header on read */
+#define BPF_KNOTE 0x0008 /* kernel note attached */
+#define BPF_DETACHING 0x0010 /* bpf_d is being detached */
+#define BPF_DETACHED 0x0020 /* bpf_d is detached */
+#define BPF_CLOSING 0x0040 /* bpf_d is being closed */
+#define BPF_TRUNCATE 0x0080 /* truncate the packet payload */
+#define BPF_PKTHDRV2 0x0100 /* pktap header version 2 */
+
/*
* Descriptor associated with each attached hardware interface.
*/
struct bpf_if {
- struct bpf_if *bif_next; /* list of all interfaces */
- struct bpf_d *bif_dlist; /* descriptor list */
- u_int bif_dlt; /* link layer type */
- u_int bif_hdrlen; /* length of header (with padding) */
- struct ifnet *bif_ifp; /* corresponding interface */
+ struct bpf_if *bif_next; /* list of all interfaces */
+ 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 */
projects / apple / xnu.git / blobdiff