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 */ 50 struct 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 */ 72 struct 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 */ 93 enum { 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_ */ 102