sys/netgraph7/ng_bpf.h

   1 /*
   2  * ng_bpf.h
   3  */
   4
   5 /*-
   6  * Copyright (c) 1996-1999 Whistle Communications, Inc.
   7  * All rights reserved.
   8  *
   9  * Subject to the following obligations and disclaimer of warranty, use and
  10  * redistribution of this software, in source or object code forms, with or
  11  * without modifications are expressly permitted by Whistle Communications;
  12  * provided, however, that:
  13  * 1. Any and all reproductions of the source or object code must include the
  14  *    copyright notice above and the following disclaimer of warranties; and
  15  * 2. No rights are granted, in any manner or form, to use Whistle
  16  *    Communications, Inc. trademarks, including the mark "WHISTLE
  17  *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
  18  *    such appears in the above copyright notice or in the software.
  19  *
  20  * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
  21  * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
  22  * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
  23  * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
  24  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
  25  * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
  26  * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
  27  * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
  28  * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
  29  * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
  30  * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
  31  * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
  32  * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
  33  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  34  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  35  * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
  36  * OF SUCH DAMAGE.
  37  *
  38  * Author: Archie Cobbs <archie@freebsd.org>
  39  *
  40  * $FreeBSD: src/sys/netgraph/ng_bpf.h,v 1.11 2005/02/12 18:10:26 ru Exp $
  41  * $DragonFly: src/sys/netgraph7/ng_bpf.h,v 1.2 2008/06/26 23:05:35 dillon Exp $
  42  * $Whistle: ng_bpf.h,v 1.3 1999/12/03 20:30:23 archie Exp $
  43  */
  44
  45 #ifndef _NETGRAPH_NG_BPF_H_
  46 #define _NETGRAPH_NG_BPF_H_
  47
  48 /* Node type name and magic cookie */
  49 #define NG_BPF_NODE_TYPE        "bpf"
  50 #define NGM_BPF_COOKIE          944100792
  51
  52 /* Program structure for one hook */
  53 struct ng_bpf_hookprog {
  54         char            thisHook[NG_HOOKSIZ];           /* name of hook */
  55         char            ifMatch[NG_HOOKSIZ];            /* match dest hook */
  56         char            ifNotMatch[NG_HOOKSIZ];         /* !match dest hook */
  57         int32_t         bpf_prog_len;                   /* #insns in program */
  58         struct bpf_insn bpf_prog[];                     /* bpf program */
  59 };
  60
  61 #define NG_BPF_HOOKPROG_SIZE(numInsn)   \
  62         (sizeof(struct ng_bpf_hookprog) + (numInsn) * sizeof(struct bpf_insn))
  63
  64 /* Keep this in sync with the above structure definition */
  65 #define NG_BPF_HOOKPROG_TYPE_INFO(bptype)       {               \
  66           { "thisHook",         &ng_parse_hookbuf_type  },      \
  67           { "ifMatch",          &ng_parse_hookbuf_type  },      \
  68           { "ifNotMatch",       &ng_parse_hookbuf_type  },      \
  69           { "bpf_prog_len",     &ng_parse_int32_type    },      \
  70           { "bpf_prog",         (bptype)                },      \
  71           { NULL }                                              \
  72 }
  73
  74 /* Statistics structure for one hook */
  75 struct ng_bpf_hookstat {
  76         u_int64_t       recvFrames;
  77         u_int64_t       recvOctets;
  78         u_int64_t       recvMatchFrames;
  79         u_int64_t       recvMatchOctets;
  80         u_int64_t       xmitFrames;
  81         u_int64_t       xmitOctets;
  82 };
  83
  84 /* Keep this in sync with the above structure definition */
  85 #define NG_BPF_HOOKSTAT_TYPE_INFO       {                       \
  86           { "recvFrames",       &ng_parse_uint64_type   },      \
  87           { "recvOctets",       &ng_parse_uint64_type   },      \
  88           { "recvMatchFrames",  &ng_parse_uint64_type   },      \
  89           { "recvMatchOctets",  &ng_parse_uint64_type   },      \
  90           { "xmitFrames",       &ng_parse_uint64_type   },      \
  91           { "xmitOctets",       &ng_parse_uint64_type   },      \
  92           { NULL }                                              \
  93 }
  94
  95 /* Netgraph commands */
  96 enum {
  97         NGM_BPF_SET_PROGRAM = 1,        /* supply a struct ng_bpf_hookprog */
  98         NGM_BPF_GET_PROGRAM,            /* returns a struct ng_bpf_hookprog */
  99         NGM_BPF_GET_STATS,              /* supply name as char[NG_HOOKSIZ] */
 100         NGM_BPF_CLR_STATS,              /* supply name as char[NG_HOOKSIZ] */
 101         NGM_BPF_GETCLR_STATS,           /* supply name as char[NG_HOOKSIZ] */
 102 };
 103
 104 #endif /* _NETGRAPH_NG_BPF_H_ */