1 2 /* 3 * ng_bpf.h 4 * 5 * Copyright (c) 1996-1999 Whistle Communications, Inc. 6 * All rights reserved. 7 * 8 * Subject to the following obligations and disclaimer of warranty, use and 9 * redistribution of this software, in source or object code forms, with or 10 * without modifications are expressly permitted by Whistle Communications; 11 * provided, however, that: 12 * 1. Any and all reproductions of the source or object code must include the 13 * copyright notice above and the following disclaimer of warranties; and 14 * 2. No rights are granted, in any manner or form, to use Whistle 15 * Communications, Inc. trademarks, including the mark "WHISTLE 16 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as 17 * such appears in the above copyright notice or in the software. 18 * 19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND 20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO 21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, 22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF 23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANBPF, OR MAKE ANY 25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS 26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. 27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES 28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING 29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR 31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 34 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 35 * OF SUCH DAMAGE. 36 * 37 * Author: Archie Cobbs <archie@freebsd.org> 38 * 39 * $FreeBSD: src/sys/netgraph/ng_bpf.h,v 1.2.4.3 2002/07/02 23:44:02 archie Exp $ 40 * $DragonFly: src/sys/netgraph/bpf/ng_bpf.h,v 1.5 2007/06/03 20:51:11 dillon Exp $ 41 * $Whistle: ng_bpf.h,v 1.3 1999/12/03 20:30:23 archie Exp $ 42 */ 43 44 #ifndef _NETGRAPH_BPF_H_ 45 #define _NETGRAPH_BPF_H_ 46 47 /* Node type name and magic cookie */ 48 #define NG_BPF_NODE_TYPE "bpf" 49 #define NGM_BPF_COOKIE 944100792 50 51 /* Program structure for one hook */ 52 struct ng_bpf_hookprog { 53 char thisHook[NG_HOOKSIZ]; /* name of hook */ 54 char ifMatch[NG_HOOKSIZ]; /* match dest hook */ 55 char ifNotMatch[NG_HOOKSIZ]; /* !match dest hook */ 56 int32_t bpf_prog_len; /* #isns in program */ 57 struct bpf_insn bpf_prog[__ARRAY_ZERO]; /* bpf program */ 58 }; 59 60 #define NG_BPF_HOOKPROG_SIZE(numInsn) \ 61 (sizeof(struct ng_bpf_hookprog) + (numInsn) * sizeof(struct bpf_insn)) 62 63 /* Keep this in sync with the above structure definition */ 64 #define NG_BPF_HOOKPROG_TYPE_INFO(bptype) { \ 65 { "thisHook", &ng_parse_hookbuf_type }, \ 66 { "ifMatch", &ng_parse_hookbuf_type }, \ 67 { "ifNotMatch", &ng_parse_hookbuf_type }, \ 68 { "bpf_prog_len", &ng_parse_int32_type }, \ 69 { "bpf_prog", (bptype) }, \ 70 { NULL } \ 71 } 72 73 /* Statistics structure for one hook */ 74 struct ng_bpf_hookstat { 75 u_int64_t recvFrames; 76 u_int64_t recvOctets; 77 u_int64_t recvMatchFrames; 78 u_int64_t recvMatchOctets; 79 u_int64_t xmitFrames; 80 u_int64_t xmitOctets; 81 }; 82 83 /* Keep this in sync with the above structure definition */ 84 #define NG_BPF_HOOKSTAT_TYPE_INFO { \ 85 { "recvFrames", &ng_parse_uint64_type }, \ 86 { "recvOctets", &ng_parse_uint64_type }, \ 87 { "recvMatchFrames", &ng_parse_uint64_type }, \ 88 { "recvMatchOctets", &ng_parse_uint64_type }, \ 89 { "xmitFrames", &ng_parse_uint64_type }, \ 90 { "xmitOctets", &ng_parse_uint64_type }, \ 91 { NULL } \ 92 } 93 94 /* Netgraph commands */ 95 enum { 96 NGM_BPF_SET_PROGRAM = 1, /* supply a struct ng_bpf_hookprog */ 97 NGM_BPF_GET_PROGRAM, /* returns a struct ng_bpf_hookprog */ 98 NGM_BPF_GET_STATS, /* supply name as char[NG_HOOKSIZ] */ 99 NGM_BPF_CLR_STATS, /* supply name as char[NG_HOOKSIZ] */ 100 NGM_BPF_GETCLR_STATS, /* supply name as char[NG_HOOKSIZ] */ 101 }; 102 103 #endif /* _NETGRAPH_BPF_H_ */ 104