1 /*- 2 * ng_etf.h 3 */ 4 5 /*- 6 * Copyright (c) 2001, FreeBSD Incorporated 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice unmodified, this list of conditions, and the following 14 * disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * Author: Julian Elischer <julian@freebsd.org> 32 * 33 * $FreeBSD$ 34 */ 35 36 #ifndef _NETGRAPH_NG_ETF_H_ 37 #define _NETGRAPH_NG_ETF_H_ 38 39 /* Node type name. This should be unique among all netgraph node types */ 40 #define NG_ETF_NODE_TYPE "etf" 41 42 /* Node type cookie. Should also be unique. This value MUST change whenever 43 an incompatible change is made to this header file, to insure consistency. 44 The de facto method for generating cookies is to take the output of the 45 date command: date -u +'%s' */ 46 #define NGM_ETF_COOKIE 983084516 47 48 /* Hook names */ 49 #define NG_ETF_HOOK_DOWNSTREAM "downstream" 50 #define NG_ETF_HOOK_NOMATCH "nomatch" 51 52 /* Netgraph commands understood by this node type */ 53 enum { 54 NGM_ETF_SET_FLAG = 1, 55 NGM_ETF_GET_STATUS, 56 NGM_ETF_SET_FILTER, 57 58 }; 59 60 /* This structure is returned by the NGM_ETF_GET_STATUS command */ 61 struct ng_etfstat { 62 u_int32_t packets_in; /* packets in from downstream */ 63 u_int32_t packets_out; /* packets out towards downstream */ 64 }; 65 66 /* 67 * This needs to be kept in sync with the above structure definition 68 */ 69 #define NG_ETF_STATS_TYPE_INFO { \ 70 { "packets_in", &ng_parse_uint32_type }, \ 71 { "packets_out", &ng_parse_uint32_type }, \ 72 { NULL } \ 73 } 74 75 /* This structure is returned by the NGM_ETF_GET_STATUS command */ 76 struct ng_etffilter { 77 char matchhook[NG_HOOKSIZ]; /* hook name */ 78 u_int16_t ethertype; /* this ethertype to this hook */ 79 }; 80 81 /* 82 * This needs to be kept in sync with the above structure definition 83 */ 84 #define NG_ETF_FILTER_TYPE_INFO { \ 85 { "matchhook", &ng_parse_hookbuf_type }, \ 86 { "ethertype", &ng_parse_uint16_type }, \ 87 { NULL } \ 88 } 89 90 #endif /* _NETGRAPH_NG_ETF_H_ */ 91