1
2 /*
3 * ng_one2many.h
4 *
5 * Copyright (c) 2000 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
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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: releng/5.2/sys/netgraph/ng_one2many.h 97685 2002-05-31 23:48:03Z archie $
40 */
41
42 #ifndef _NETGRAPH_NG_ONE2MANY_H_
43 #define _NETGRAPH_NG_ONE2MANY_H_
44
45 /* Node type name and magic cookie */
46 #define NG_ONE2MANY_NODE_TYPE "one2many"
47 #define NGM_ONE2MANY_COOKIE 971111383
48
49 /* Hook names */
50 #define NG_ONE2MANY_HOOK_ONE "one"
51 #define NG_ONE2MANY_HOOK_MANY_PREFIX "many" /* append decimal integer */
52 #define NG_ONE2MANY_HOOK_MANY_FMT "many%d" /* for use with printf(3) */
53
54 /* Maximum number of supported "many" links */
55 #define NG_ONE2MANY_MAX_LINKS 64
56
57 /* Link number used to indicate the "one" hook */
58 #define NG_ONE2MANY_ONE_LINKNUM (-1)
59
60 /* Algorithms for outgoing packet distribution (XXX only one so far) */
61 #define NG_ONE2MANY_XMIT_ROUNDROBIN 1 /* round-robin delivery */
62 #define NG_ONE2MANY_XMIT_ALL 2 /* send packets to all many hooks */
63
64 /* Algorithms for detecting link failure (XXX only one so far) */
65 #define NG_ONE2MANY_FAIL_MANUAL 1 /* use enabledLinks[] array */
66
67 /* Node configuration structure */
68 struct ng_one2many_config {
69 u_int32_t xmitAlg; /* how to distribute packets */
70 u_int32_t failAlg; /* how to detect link failure */
71 u_char enabledLinks[NG_ONE2MANY_MAX_LINKS];
72 };
73
74 /* Keep this in sync with the above structure definition */
75 #define NG_ONE2MANY_CONFIG_TYPE_INFO(atype) { \
76 { "xmitAlg", &ng_parse_uint32_type }, \
77 { "failAlg", &ng_parse_uint32_type }, \
78 { "enabledLinks", (atype) }, \
79 { NULL } \
80 }
81
82 /* Statistics structure (one for each link) */
83 struct ng_one2many_link_stats {
84 u_int64_t recvOctets; /* total octets rec'd on link */
85 u_int64_t recvPackets; /* total pkts rec'd on link */
86 u_int64_t xmitOctets; /* total octets xmit'd on link */
87 u_int64_t xmitPackets; /* total pkts xmit'd on link */
88 u_int64_t memoryFailures; /* times couldn't get mem or mbuf */
89 };
90
91 /* Keep this in sync with the above structure definition */
92 #define NG_ONE2MANY_LINK_STATS_TYPE_INFO { \
93 { "recvOctets", &ng_parse_uint64_type }, \
94 { "recvPackets", &ng_parse_uint64_type }, \
95 { "xmitOctets", &ng_parse_uint64_type }, \
96 { "xmitPackets", &ng_parse_uint64_type }, \
97 { "memoryFailures", &ng_parse_uint64_type }, \
98 { NULL } \
99 }
100
101 /* Netgraph control messages */
102 enum {
103 NGM_ONE2MANY_SET_CONFIG, /* set configuration */
104 NGM_ONE2MANY_GET_CONFIG, /* get configuration */
105 NGM_ONE2MANY_GET_STATS, /* get link stats */
106 NGM_ONE2MANY_CLR_STATS, /* clear link stats */
107 NGM_ONE2MANY_GETCLR_STATS, /* atomically get & clear link stats */
108 };
109
110 #endif /* _NETGRAPH_NG_ONE2MANY_H_ */
111
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