netgraph7: Welcome ng_one2many.
[dragonfly.git] / sys / netgraph7 / one2many / ng_one2many.h
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1/*
2 * ng_one2many.h
3 */
4
5/*-
6 * Copyright (c) 2000 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 *
40 * $FreeBSD: src/sys/netgraph/ng_one2many.h,v 1.8 2005/01/07 01:45:39 imp Exp $
5a975a3d 41 * $DragonFly: src/sys/netgraph7/ng_one2many.h,v 1.2 2008/06/26 23:05:35 dillon Exp $
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42 */
43
44#ifndef _NETGRAPH_NG_ONE2MANY_H_
45#define _NETGRAPH_NG_ONE2MANY_H_
46
47/* Node type name and magic cookie */
48#define NG_ONE2MANY_NODE_TYPE "one2many"
49#define NGM_ONE2MANY_COOKIE 1100897444
50
51/* Hook names */
52#define NG_ONE2MANY_HOOK_ONE "one"
53#define NG_ONE2MANY_HOOK_MANY_PREFIX "many" /* append decimal integer */
54#define NG_ONE2MANY_HOOK_MANY_FMT "many%d" /* for use with printf(3) */
55
56/* Maximum number of supported "many" links */
57#define NG_ONE2MANY_MAX_LINKS 64
58
59/* Link number used to indicate the "one" hook */
60#define NG_ONE2MANY_ONE_LINKNUM (-1)
61
62/* Algorithms for outgoing packet distribution (XXX only one so far) */
63#define NG_ONE2MANY_XMIT_ROUNDROBIN 1 /* round-robin delivery */
64#define NG_ONE2MANY_XMIT_ALL 2 /* send packets to all many hooks */
65
66/* Algorithms for detecting link failure (XXX only one so far) */
67#define NG_ONE2MANY_FAIL_MANUAL 1 /* use enabledLinks[] array */
68#define NG_ONE2MANY_FAIL_NOTIFY 2 /* listen to flow control msgs */
69
70/* Node configuration structure */
71struct ng_one2many_config {
72 u_int32_t xmitAlg; /* how to distribute packets */
73 u_int32_t failAlg; /* how to detect link failure */
74 u_char enabledLinks[NG_ONE2MANY_MAX_LINKS];
75};
76
77/* Keep this in sync with the above structure definition */
78#define NG_ONE2MANY_CONFIG_TYPE_INFO(atype) { \
79 { "xmitAlg", &ng_parse_uint32_type }, \
80 { "failAlg", &ng_parse_uint32_type }, \
81 { "enabledLinks", (atype) }, \
82 { NULL } \
83}
84
85/* Statistics structure (one for each link) */
86struct ng_one2many_link_stats {
87 u_int64_t recvOctets; /* total octets rec'd on link */
88 u_int64_t recvPackets; /* total pkts rec'd on link */
89 u_int64_t xmitOctets; /* total octets xmit'd on link */
90 u_int64_t xmitPackets; /* total pkts xmit'd on link */
91 u_int64_t memoryFailures; /* times couldn't get mem or mbuf */
92};
93
94/* Keep this in sync with the above structure definition */
95#define NG_ONE2MANY_LINK_STATS_TYPE_INFO { \
96 { "recvOctets", &ng_parse_uint64_type }, \
97 { "recvPackets", &ng_parse_uint64_type }, \
98 { "xmitOctets", &ng_parse_uint64_type }, \
99 { "xmitPackets", &ng_parse_uint64_type }, \
100 { "memoryFailures", &ng_parse_uint64_type }, \
101 { NULL } \
102}
103
104/* Netgraph control messages */
105enum {
106 NGM_ONE2MANY_SET_CONFIG, /* set configuration */
107 NGM_ONE2MANY_GET_CONFIG, /* get configuration */
108 NGM_ONE2MANY_GET_STATS, /* get link stats */
109 NGM_ONE2MANY_CLR_STATS, /* clear link stats */
110 NGM_ONE2MANY_GETCLR_STATS, /* atomically get & clear link stats */
111};
112
113#endif /* _NETGRAPH_NG_ONE2MANY_H_ */
114