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 * $FreeBSD$ 40 * $Whistle: ng_bpf.h,v 1.3 1999/12/03 20:30:23 archie Exp $ 41 */ 42 43 #ifndef _NETGRAPH_BPF_H_ 44 #define _NETGRAPH_BPF_H_ 45 46 /* Node type name and magic cookie */ 47 #define NG_BPF_NODE_TYPE "bpf" 48 #define NGM_BPF_COOKIE 944100792 49 50 /* Program structure for one hook */ 51 struct ng_bpf_hookprog { 52 char thisHook[NG_HOOKLEN+1]; /* name of hook */ 53 char ifMatch[NG_HOOKLEN+1]; /* match dest hook */ 54 char ifNotMatch[NG_HOOKLEN+1]; /* !match dest hook */ 55 int32_t bpf_prog_len; /* #isns in program */ 56 struct bpf_insn bpf_prog[0]; /* bpf program */ 57 }; 58 59 #define NG_BPF_HOOKPROG_SIZE(numInsn) \ 60 (sizeof(struct ng_bpf_hookprog) + (numInsn) * sizeof(struct bpf_insn)) 61 62 /* Keep this in sync with the above structure definition */ 63 #define NG_BPF_HOOKPROG_TYPE_INFO(bptype) { \ 64 { \ 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 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 { \ 87 { "recvFrames", &ng_parse_uint64_type }, \ 88 { "recvOctets", &ng_parse_uint64_type }, \ 89 { "recvMatchFrames", &ng_parse_uint64_type }, \ 90 { "recvMatchOctets", &ng_parse_uint64_type }, \ 91 { "xmitFrames", &ng_parse_uint64_type }, \ 92 { "xmitOctets", &ng_parse_uint64_type }, \ 93 { NULL }, \ 94 } \ 95 } 96 97 /* Netgraph commands */ 98 enum { 99 NGM_BPF_SET_PROGRAM = 1, /* supply a struct ng_bpf_hookprog */ 100 NGM_BPF_GET_PROGRAM, /* returns a struct ng_bpf_hookprog */ 101 NGM_BPF_GET_STATS, /* supply name as char[NG_HOOKLEN+1] */ 102 NGM_BPF_CLR_STATS, /* supply name as char[NG_HOOKLEN+1] */ 103 NGM_BPF_GETCLR_STATS, /* supply name as char[NG_HOOKLEN+1] */ 104 }; 105 106 #endif /* _NETGRAPH_BPF_H_ */ 107