1
2 /*
3 * ng_async.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, GUARANTEE, 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_async.h,v 1.5 1999/01/25 01:17:14 archie Exp $
41 */
42
43 #ifndef _NETGRAPH_ASYNC_H_
44 #define _NETGRAPH_ASYNC_H_
45
46 /* Type name and cookie */
47 #define NG_ASYNC_NODE_TYPE "async"
48 #define NGM_ASYNC_COOKIE 886473717
49
50 /* Hook names */
51 #define NG_ASYNC_HOOK_SYNC "sync" /* Sync frames */
52 #define NG_ASYNC_HOOK_ASYNC "async" /* Async-encoded frames */
53
54 /* Maximum receive size bounds (for both sync and async sides) */
55 #define NG_ASYNC_MIN_MRU 1
56 #define NG_ASYNC_MAX_MRU 8192
57 #define NG_ASYNC_DEFAULT_MRU 1600
58
59 /* Frame statistics */
60 struct ng_async_stat {
61 u_int32_t syncOctets;
62 u_int32_t syncFrames;
63 u_int32_t syncOverflows;
64 u_int32_t asyncOctets;
65 u_int32_t asyncFrames;
66 u_int32_t asyncRunts;
67 u_int32_t asyncOverflows;
68 u_int32_t asyncBadCheckSums;
69 };
70
71 /* Keep this in sync with the above structure definition */
72 #define NG_ASYNC_STATS_TYPE_INFO { \
73 { "syncOctets", &ng_parse_uint32_type }, \
74 { "syncFrames", &ng_parse_uint32_type }, \
75 { "syncOverflows", &ng_parse_uint32_type }, \
76 { "asyncOctets", &ng_parse_uint32_type }, \
77 { "asyncFrames", &ng_parse_uint32_type }, \
78 { "asyncRunts", &ng_parse_uint32_type }, \
79 { "asyncOverflows", &ng_parse_uint32_type }, \
80 { "asyncBadCheckSums",&ng_parse_uint32_type }, \
81 { NULL } \
82 }
83
84 /* Configuration for this node */
85 struct ng_async_cfg {
86 u_char enabled; /* Turn encoding on/off */
87 u_int16_t amru; /* Max receive async frame length */
88 u_int16_t smru; /* Max receive sync frame length */
89 u_int32_t accm; /* ACCM encoding */
90 };
91
92 /* Keep this in sync with the above structure definition */
93 #define NG_ASYNC_CONFIG_TYPE_INFO { \
94 { "enabled", &ng_parse_int8_type }, \
95 { "amru", &ng_parse_uint16_type }, \
96 { "smru", &ng_parse_uint16_type }, \
97 { "accm", &ng_parse_hint32_type }, \
98 { NULL } \
99 }
100
101 /* Commands */
102 enum {
103 NGM_ASYNC_CMD_GET_STATS = 1, /* returns struct ng_async_stat */
104 NGM_ASYNC_CMD_CLR_STATS,
105 NGM_ASYNC_CMD_SET_CONFIG, /* takes struct ng_async_cfg */
106 NGM_ASYNC_CMD_GET_CONFIG, /* returns struct ng_async_cfg */
107 };
108
109 #endif /* _NETGRAPH_ASYNC_H_ */
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