X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8ad349bb6ed4a0be06e34c92be0d98b92e078db4..5c9f46613a83ebfc29a5b1f099448259e96a98f0:/bsd/net/bpfdesc.h diff --git a/bsd/net/bpfdesc.h b/bsd/net/bpfdesc.h index 68b23d06e..dcb9ac0af 100644 --- a/bsd/net/bpfdesc.h +++ b/bsd/net/bpfdesc.h @@ -1,31 +1,29 @@ /* - * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved. + * Copyright (c) 2000-2014 Apple Inc. All rights reserved. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * @APPLE_LICENSE_OSREFERENCE_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. * - * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and + * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and * limitations under the License. - * - * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1990, 1991, 1993 @@ -78,6 +76,7 @@ */ #include +#include /* * Descriptor associated with each open bpf file. @@ -98,14 +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 */ @@ -128,9 +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. */ @@ -139,7 +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 */