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
41#ifndef _NETGRAPH_NG_ONE2MANY_H_
42#define _NETGRAPH_NG_ONE2MANY_H_
43
44/* Node type name and magic cookie */
45#define NG_ONE2MANY_NODE_TYPE		"one2many"
46#define NGM_ONE2MANY_COOKIE		1100897444
47
48/* Hook names */
49#define NG_ONE2MANY_HOOK_ONE		"one"
50#define NG_ONE2MANY_HOOK_MANY_PREFIX	"many"	 /* append decimal integer */
51#define NG_ONE2MANY_HOOK_MANY_FMT	"many%d" /* for use with printf(3) */
52
53/* Maximum number of supported "many" links */
54#define NG_ONE2MANY_MAX_LINKS		64
55
56/* Link number used to indicate the "one" hook */
57#define NG_ONE2MANY_ONE_LINKNUM		(-1)
58
59/* Algorithms for outgoing packet distribution (XXX only one so far) */
60#define NG_ONE2MANY_XMIT_ROUNDROBIN	1	/* round-robin delivery */
61#define NG_ONE2MANY_XMIT_ALL		2	/* send packets to all many hooks */
62#define	NG_ONE2MANY_XMIT_FAILOVER	3	/* send packets to first active "many" */
63
64/* Algorithms for detecting link failure (XXX only one so far) */
65#define NG_ONE2MANY_FAIL_MANUAL		1	/* use enabledLinks[] array */
66#define NG_ONE2MANY_FAIL_NOTIFY		2	/* listen to flow control msgs */
67
68/* Node configuration structure */
69struct ng_one2many_config {
70	u_int32_t	xmitAlg;		/* how to distribute packets */
71	u_int32_t	failAlg;		/* how to detect link failure */
72	u_char		enabledLinks[NG_ONE2MANY_MAX_LINKS];
73};
74
75/* Keep this in sync with the above structure definition */
76#define NG_ONE2MANY_CONFIG_TYPE_INFO(atype)	{		\
77	  { "xmitAlg",		&ng_parse_uint32_type	},	\
78	  { "failAlg",		&ng_parse_uint32_type	},	\
79	  { "enabledLinks",	(atype)			},	\
80	  { NULL }						\
81}
82
83/* Statistics structure (one for each link) */
84struct ng_one2many_link_stats {
85	u_int64_t	recvOctets;	/* total octets rec'd on link */
86	u_int64_t	recvPackets;	/* total pkts rec'd on link */
87	u_int64_t	xmitOctets;	/* total octets xmit'd on link */
88	u_int64_t	xmitPackets;	/* total pkts xmit'd on link */
89	u_int64_t	memoryFailures;	/* times couldn't get mem or mbuf */
90};
91
92/* Keep this in sync with the above structure definition */
93#define NG_ONE2MANY_LINK_STATS_TYPE_INFO	{		\
94	  { "recvOctets",	&ng_parse_uint64_type	},	\
95	  { "recvPackets",	&ng_parse_uint64_type	},	\
96	  { "xmitOctets",	&ng_parse_uint64_type	},	\
97	  { "xmitPackets",	&ng_parse_uint64_type	},	\
98	  { "memoryFailures",	&ng_parse_uint64_type	},	\
99	  { NULL }						\
100}
101
102/* Netgraph control messages */
103enum {
104	NGM_ONE2MANY_SET_CONFIG,	/* set configuration */
105	NGM_ONE2MANY_GET_CONFIG,	/* get configuration */
106	NGM_ONE2MANY_GET_STATS,		/* get link stats */
107	NGM_ONE2MANY_CLR_STATS,		/* clear link stats */
108	NGM_ONE2MANY_GETCLR_STATS,	/* atomically get & clear link stats */
109};
110
111#endif /* _NETGRAPH_NG_ONE2MANY_H_ */
112