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 * $FreeBSD$ 41 * $Whistle: ng_bpf.h,v 1.3 1999/12/03 20:30:23 archie Exp $ 42 */ 43 44 #ifndef _NETGRAPH_NG_BPF_H_ 45 #define _NETGRAPH_NG_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; /* #insns in program */ 57 struct bpf_insn bpf_prog[]; /* 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_NG_BPF_H_ */ 104