d30293b3ff
The new method is 'flood' (in addition to the old round-robin) in which incoming packets are sent to more than one outgoing hook. (I'm not sure what Rogier is using this for but it seems generally useful and isn't much extra) Submitted by: Rogier R. Mulhuijzen (drwilco@drwilco.net )
116 lines
4.5 KiB
C
116 lines
4.5 KiB
C
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/*
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* ng_one2many.h
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*
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* Copyright (c) 2000 Whistle Communications, Inc.
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* All rights reserved.
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*
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* Subject to the following obligations and disclaimer of warranty, use and
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* redistribution of this software, in source or object code forms, with or
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* without modifications are expressly permitted by Whistle Communications;
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* provided, however, that:
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* 1. Any and all reproductions of the source or object code must include the
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* copyright notice above and the following disclaimer of warranties; and
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* 2. No rights are granted, in any manner or form, to use Whistle
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* Communications, Inc. trademarks, including the mark "WHISTLE
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* COMMUNICATIONS" on advertising, endorsements, or otherwise except as
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* such appears in the above copyright notice or in the software.
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*
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* THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
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* REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
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* INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
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* WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
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* REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
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* SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
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* IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
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* RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
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* WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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* PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* Author: Archie Cobbs <archie@freebsd.org>
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*
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* $FreeBSD$
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*/
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#ifndef _NETGRAPH_NG_ONE2MANY_H_
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#define _NETGRAPH_NG_ONE2MANY_H_
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/* Node type name and magic cookie */
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#define NG_ONE2MANY_NODE_TYPE "one2many"
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#define NGM_ONE2MANY_COOKIE 971111383
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/* Hook names */
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#define NG_ONE2MANY_HOOK_ONE "one"
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#define NG_ONE2MANY_HOOK_MANY_PREFIX "many" /* append decimal integer */
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#define NG_ONE2MANY_HOOK_MANY_FMT "many%d" /* for use with printf(3) */
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/* Maximum number of supported "many" links */
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#define NG_ONE2MANY_MAX_LINKS 64
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/* Link number used to indicate the "one" hook */
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#define NG_ONE2MANY_ONE_LINKNUM (-1)
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/* Algorithms for outgoing packet distribution (XXX only one so far) */
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#define NG_ONE2MANY_XMIT_ROUNDROBIN 1 /* round-robin delivery */
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#define NG_ONE2MANY_XMIT_ALL 2 /* send packets to all many hooks */
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/* Algorithms for detecting link failure (XXX only one so far) */
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#define NG_ONE2MANY_FAIL_MANUAL 1 /* use enabledLinks[] array */
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/* Node configuration structure */
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struct ng_one2many_config {
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u_int32_t xmitAlg; /* how to distribute packets */
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u_int32_t failAlg; /* how to detect link failure */
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u_char enabledLinks[NG_ONE2MANY_MAX_LINKS];
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};
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/* Keep this in sync with the above structure definition */
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#define NG_ONE2MANY_CONFIG_TYPE_INFO(atype) { \
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{ \
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{ "xmitAlg", &ng_parse_uint32_type }, \
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{ "failAlg", &ng_parse_uint32_type }, \
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{ "enabledLinks", (atype) }, \
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{ NULL } \
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} \
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}
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/* Statistics structure (one for each link) */
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struct ng_one2many_link_stats {
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u_int64_t recvOctets; /* total octets rec'd on link */
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u_int64_t recvPackets; /* total pkts rec'd on link */
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u_int64_t xmitOctets; /* total octets xmit'd on link */
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u_int64_t xmitPackets; /* total pkts xmit'd on link */
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u_int64_t memoryFailures; /* times couldn't get mem or mbuf */
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};
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/* Keep this in sync with the above structure definition */
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#define NG_ONE2MANY_LINK_STATS_TYPE_INFO { \
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{ \
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{ "recvOctets", &ng_parse_uint64_type }, \
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{ "recvPackets", &ng_parse_uint64_type }, \
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{ "xmitOctets", &ng_parse_uint64_type }, \
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{ "xmitPackets", &ng_parse_uint64_type }, \
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{ "memoryFailures", &ng_parse_uint64_type }, \
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{ NULL } \
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} \
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}
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/* Netgraph control messages */
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enum {
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NGM_ONE2MANY_SET_CONFIG, /* set configuration */
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NGM_ONE2MANY_GET_CONFIG, /* get configuration */
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NGM_ONE2MANY_GET_STATS, /* get link stats */
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NGM_ONE2MANY_CLR_STATS, /* clear link stats */
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NGM_ONE2MANY_GETCLR_STATS, /* atomically get & clear link stats */
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};
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#endif /* _NETGRAPH_NG_ONE2MANY_H_ */
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