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ng_one2many.h
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/*
* ng_one2many.h
*/
/*-
* Copyright (c) 2000 Whistle Communications, Inc.
* All rights reserved.
*
* Subject to the following obligations and disclaimer of warranty, use and
* redistribution of this software, in source or object code forms, with or
* without modifications are expressly permitted by Whistle Communications;
* provided, however, that:
* 1. Any and all reproductions of the source or object code must include the
* copyright notice above and the following disclaimer of warranties; and
* 2. No rights are granted, in any manner or form, to use Whistle
* Communications, Inc. trademarks, including the mark "WHISTLE
* COMMUNICATIONS" on advertising, endorsements, or otherwise except as
* such appears in the above copyright notice or in the software.
*
* THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
* REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
* INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
* WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
* REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
* SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
* IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
* RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
* WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* Author: Archie Cobbs <[email protected]>
*
* $FreeBSD$
*/
#ifndef _NETGRAPH_NG_ONE2MANY_H_
#define _NETGRAPH_NG_ONE2MANY_H_
/* Node type name and magic cookie */
#define NG_ONE2MANY_NODE_TYPE "one2many"
#define NGM_ONE2MANY_COOKIE 1100897444
/* Hook names */
#define NG_ONE2MANY_HOOK_ONE "one"
#define NG_ONE2MANY_HOOK_MANY_PREFIX "many" /* append decimal integer */
#define NG_ONE2MANY_HOOK_MANY_FMT "many%d" /* for use with printf(3) */
/* Maximum number of supported "many" links */
#define NG_ONE2MANY_MAX_LINKS 64
/* Link number used to indicate the "one" hook */
#define NG_ONE2MANY_ONE_LINKNUM (-1)
/* Algorithms for outgoing packet distribution (XXX only one so far) */
#define NG_ONE2MANY_XMIT_ROUNDROBIN 1 /* round-robin delivery */
#define NG_ONE2MANY_XMIT_ALL 2 /* send packets to all many hooks */
#define NG_ONE2MANY_XMIT_FAILOVER 3 /* send packets to first active "many" */
/* Algorithms for detecting link failure (XXX only one so far) */
#define NG_ONE2MANY_FAIL_MANUAL 1 /* use enabledLinks[] array */
#define NG_ONE2MANY_FAIL_NOTIFY 2 /* listen to flow control msgs */
/* Node configuration structure */
struct ng_one2many_config {
u_int32_t xmitAlg; /* how to distribute packets */
u_int32_t failAlg; /* how to detect link failure */
u_char enabledLinks[NG_ONE2MANY_MAX_LINKS];
};
/* Keep this in sync with the above structure definition */
#define NG_ONE2MANY_CONFIG_TYPE_INFO(atype) { \
{ "xmitAlg", &ng_parse_uint32_type }, \
{ "failAlg", &ng_parse_uint32_type }, \
{ "enabledLinks", (atype) }, \
{ NULL } \
}
/* Statistics structure (one for each link) */
struct ng_one2many_link_stats {
u_int64_t recvOctets; /* total octets rec'd on link */
u_int64_t recvPackets; /* total pkts rec'd on link */
u_int64_t xmitOctets; /* total octets xmit'd on link */
u_int64_t xmitPackets; /* total pkts xmit'd on link */
u_int64_t memoryFailures; /* times couldn't get mem or mbuf */
};
/* Keep this in sync with the above structure definition */
#define NG_ONE2MANY_LINK_STATS_TYPE_INFO { \
{ "recvOctets", &ng_parse_uint64_type }, \
{ "recvPackets", &ng_parse_uint64_type }, \
{ "xmitOctets", &ng_parse_uint64_type }, \
{ "xmitPackets", &ng_parse_uint64_type }, \
{ "memoryFailures", &ng_parse_uint64_type }, \
{ NULL } \
}
/* Netgraph control messages */
enum {
NGM_ONE2MANY_SET_CONFIG, /* set configuration */
NGM_ONE2MANY_GET_CONFIG, /* get configuration */
NGM_ONE2MANY_GET_STATS, /* get link stats */
NGM_ONE2MANY_CLR_STATS, /* clear link stats */
NGM_ONE2MANY_GETCLR_STATS, /* atomically get & clear link stats */
};
#endif /* _NETGRAPH_NG_ONE2MANY_H_ */