diff options
Diffstat (limited to 'sys/netgraph/ng_bpf.h')
| -rw-r--r-- | sys/netgraph/ng_bpf.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/sys/netgraph/ng_bpf.h b/sys/netgraph/ng_bpf.h new file mode 100644 index 0000000..6745b88 --- /dev/null +++ b/sys/netgraph/ng_bpf.h @@ -0,0 +1,106 @@ + +/* + * ng_bpf.h + * + * Copyright (c) 1996-1999 Whistle Communications, Inc. + * All rights reserved. + * + * Subject to the following obligations and disclaimer of warranty, use and + * redistribution of this software, in source or object code forms, with or + * without modifications are expressly permitted by Whistle Communications; + * provided, however, that: + * 1. Any and all reproductions of the source or object code must include the + * copyright notice above and the following disclaimer of warranties; and + * 2. No rights are granted, in any manner or form, to use Whistle + * Communications, Inc. trademarks, including the mark "WHISTLE + * COMMUNICATIONS" on advertising, endorsements, or otherwise except as + * such appears in the above copyright notice or in the software. + * + * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND + * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO + * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, + * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. + * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANBPF, OR MAKE ANY + * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS + * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. + * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES + * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING + * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, + * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * Author: Archie Cobbs <archie@whistle.com> + * + * $FreeBSD$ + * $Whistle: ng_bpf.h,v 1.3 1999/12/03 20:30:23 archie Exp $ + */ + +#ifndef _NETGRAPH_BPF_H_ +#define _NETGRAPH_BPF_H_ + +/* Node type name and magic cookie */ +#define NG_BPF_NODE_TYPE "bpf" +#define NGM_BPF_COOKIE 944100792 + +/* Program structure for one hook */ +struct ng_bpf_hookprog { + char thisHook[NG_HOOKLEN+1]; /* name of hook */ + char ifMatch[NG_HOOKLEN+1]; /* match dest hook */ + char ifNotMatch[NG_HOOKLEN+1]; /* !match dest hook */ + int32_t bpf_prog_len; /* #isns in program */ + struct bpf_insn bpf_prog[0]; /* bpf program */ +}; + +#define NG_BPF_HOOKPROG_SIZE(hp) \ + (sizeof(*(hp)) + (hp)->bpf_prog_len * sizeof((hp)->bpf_prog[0])) + +/* Keep this in sync with the above structure definition */ +#define NG_BPF_HOOKPROG_TYPE_INFO(bptype) { \ + { \ + { "thisHook", &ng_parse_hookbuf_type }, \ + { "ifMatch", &ng_parse_hookbuf_type }, \ + { "ifNotMatch", &ng_parse_hookbuf_type }, \ + { "bpf_prog_len", &ng_parse_int32_type }, \ + { "bpf_prog", (bptype) }, \ + { NULL }, \ + } \ +} + +/* Statistics structure for one hook */ +struct ng_bpf_hookstat { + u_int64_t recvFrames; + u_int64_t recvOctets; + u_int64_t recvMatchFrames; + u_int64_t recvMatchOctets; + u_int64_t xmitFrames; + u_int64_t xmitOctets; +}; + +/* Keep this in sync with the above structure definition */ +#define NG_BPF_HOOKSTAT_TYPE_INFO { \ + { \ + { "recvFrames", &ng_parse_int64_type }, \ + { "recvOctets", &ng_parse_int64_type }, \ + { "recvMatchFrames", &ng_parse_int64_type }, \ + { "recvMatchOctets", &ng_parse_int64_type }, \ + { "xmitFrames", &ng_parse_int64_type }, \ + { "xmitOctets", &ng_parse_int64_type }, \ + { NULL }, \ + } \ +} + +/* Netgraph commands */ +enum { + NGM_BPF_SET_PROGRAM = 1, /* supply a struct ng_bpf_hookprog */ + NGM_BPF_GET_PROGRAM, /* returns a struct ng_bpf_hookprog */ + NGM_BPF_GET_STATS, /* supply name as char[NG_HOOKLEN+1] */ + NGM_BPF_CLR_STATS, /* supply name as char[NG_HOOKLEN+1] */ + NGM_BPF_GETCLR_STATS, /* supply name as char[NG_HOOKLEN+1] */ +}; + +#endif /* _NETGRAPH_BPF_H_ */ |
