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 * $Whistle: ng_bpf.h,v 1.3 1999/12/03 20:30:23 archie Exp $
 40 */
 41
 42#ifndef _NETGRAPH_NG_BPF_H_
 43#define _NETGRAPH_NG_BPF_H_
 44
 45/* Node type name and magic cookie */
 46#define NG_BPF_NODE_TYPE	"bpf"
 47#define NGM_BPF_COOKIE		944100792
 48
 49/* Program structure for one hook */
 50struct ng_bpf_hookprog {
 51	char		thisHook[NG_HOOKSIZ];		/* name of hook */
 52	char		ifMatch[NG_HOOKSIZ];		/* match dest hook */
 53	char		ifNotMatch[NG_HOOKSIZ];		/* !match dest hook */
 54	int32_t		bpf_prog_len;			/* #insns in program */
 55	struct bpf_insn	bpf_prog[];			/* bpf program */
 56};
 57
 58#define NG_BPF_HOOKPROG_SIZE(numInsn)	\
 59	(sizeof(struct ng_bpf_hookprog) + (numInsn) * sizeof(struct bpf_insn))
 60
 61/* Keep this in sync with the above structure definition */
 62#define NG_BPF_HOOKPROG_TYPE_INFO(bptype)	{		\
 63	  { "thisHook",		&ng_parse_hookbuf_type	},	\
 64	  { "ifMatch",		&ng_parse_hookbuf_type	},	\
 65	  { "ifNotMatch",	&ng_parse_hookbuf_type	},	\
 66	  { "bpf_prog_len",	&ng_parse_int32_type	},	\
 67	  { "bpf_prog",		(bptype)		},	\
 68	  { NULL }						\
 69}
 70
 71/* Statistics structure for one hook */
 72struct ng_bpf_hookstat {
 73	u_int64_t	recvFrames;
 74	u_int64_t	recvOctets;
 75	u_int64_t	recvMatchFrames;
 76	u_int64_t	recvMatchOctets;
 77	u_int64_t	xmitFrames;
 78	u_int64_t	xmitOctets;
 79};
 80
 81/* Keep this in sync with the above structure definition */
 82#define NG_BPF_HOOKSTAT_TYPE_INFO	{			\
 83	  { "recvFrames",	&ng_parse_uint64_type	},	\
 84	  { "recvOctets",	&ng_parse_uint64_type	},	\
 85	  { "recvMatchFrames",	&ng_parse_uint64_type	},	\
 86	  { "recvMatchOctets",	&ng_parse_uint64_type	},	\
 87	  { "xmitFrames",	&ng_parse_uint64_type	},	\
 88	  { "xmitOctets",	&ng_parse_uint64_type	},	\
 89	  { NULL }						\
 90}
 91
 92/* Netgraph commands */
 93enum {
 94	NGM_BPF_SET_PROGRAM = 1,	/* supply a struct ng_bpf_hookprog */
 95	NGM_BPF_GET_PROGRAM,		/* returns a struct ng_bpf_hookprog */
 96	NGM_BPF_GET_STATS,		/* supply name as char[NG_HOOKSIZ] */
 97	NGM_BPF_CLR_STATS,		/* supply name as char[NG_HOOKSIZ] */
 98	NGM_BPF_GETCLR_STATS,		/* supply name as char[NG_HOOKSIZ] */
 99};
100
101#endif /* _NETGRAPH_NG_BPF_H_ */