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Add Marko's pipe node.
This allows one to do flow modulation similar to dummynet between arbitrary nodes.
This commit is contained in:
Julian Elischer
parent
9c6b07a695
commit
9c238a0ec4
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=182734
1053
sys/netgraph/ng_pipe.c
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1053
sys/netgraph/ng_pipe.c
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173
sys/netgraph/ng_pipe.h
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sys/netgraph/ng_pipe.h
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/*
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* Copyright (c) 2004-2008 University of Zagreb
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* Copyright (c) 2007-2008 FreeBSD Foundation
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*
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* This software was developed by the University of Zagreb and the
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* FreeBSD Foundation under sponsorship by the Stichting NLnet and the
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* FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NETGRAPH_PIPE_H_
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#define _NETGRAPH_PIPE_H_
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/* Node type name and magic cookie */
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#define NG_PIPE_NODE_TYPE "pipe"
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#define NGM_PIPE_COOKIE 200708191
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/* Hook names */
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#define NG_PIPE_HOOK_UPPER "upper"
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#define NG_PIPE_HOOK_LOWER "lower"
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#define MAX_FSIZE 16384 /* Largest supported frame size, in bytes, for BER */
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#define MAX_OHSIZE 256 /* Largest supported dummy-framing size, in bytes */
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/* Statistics structure for one hook */
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struct ng_pipe_hookstat {
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u_int64_t fwd_octets;
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u_int64_t fwd_frames;
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u_int64_t in_disc_octets;
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u_int64_t in_disc_frames;
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u_int64_t out_disc_octets;
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u_int64_t out_disc_frames;
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};
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/* Keep this in sync with the above structure definition */
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#define NG_PIPE_HOOKSTAT_INFO { \
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{ "FwdOctets", &ng_parse_uint64_type }, \
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{ "FwdFrames", &ng_parse_uint64_type }, \
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{ "queueDropOctets", &ng_parse_uint64_type }, \
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{ "queueDropFrames", &ng_parse_uint64_type }, \
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{ "delayDropOctets", &ng_parse_uint64_type }, \
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{ "delayDropFrames", &ng_parse_uint64_type }, \
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{ NULL }, \
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}
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/* Statistics structure returned by NGM_PIPE_GET_STATS */
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struct ng_pipe_stats {
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struct ng_pipe_hookstat downstream;
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struct ng_pipe_hookstat upstream;
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};
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/* Keep this in sync with the above structure definition */
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#define NG_PIPE_STATS_INFO(hstype) { \
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{ "downstream", (hstype) }, \
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{ "upstream", (hstype) }, \
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{ NULL }, \
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}
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/* Runtime structure for one hook */
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struct ng_pipe_hookrun {
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u_int32_t fifo_queues;
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u_int32_t qin_octets;
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u_int32_t qin_frames;
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u_int32_t qout_octets;
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u_int32_t qout_frames;
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};
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/* Keep this in sync with the above structure definition */
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#define NG_PIPE_HOOKRUN_INFO { \
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{ "queues", &ng_parse_uint32_type }, \
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{ "queuedOctets", &ng_parse_uint32_type }, \
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{ "queuedFrames", &ng_parse_uint32_type }, \
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{ "delayedOctets", &ng_parse_uint32_type }, \
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{ "delayedFrames", &ng_parse_uint32_type }, \
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{ NULL }, \
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}
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/* Runtime structure returned by NGM_PIPE_GET_RUN */
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struct ng_pipe_run {
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struct ng_pipe_hookrun downstream;
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struct ng_pipe_hookrun upstream;
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};
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/* Keep this in sync with the above structure definition */
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#define NG_PIPE_RUN_INFO(hstype) { \
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{ "downstream", (hstype) }, \
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{ "upstream", (hstype) }, \
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{ NULL }, \
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}
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/* Config structure for one hook */
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struct ng_pipe_hookcfg {
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u_int64_t bandwidth;
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u_int64_t ber;
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u_int32_t qin_size_limit;
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u_int32_t qout_size_limit;
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u_int32_t duplicate;
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u_int32_t fifo;
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u_int32_t drr;
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u_int32_t wfq;
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u_int32_t droptail;
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u_int32_t drophead;
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};
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/* Keep this in sync with the above structure definition */
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#define NG_PIPE_HOOKCFG_INFO { \
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{ "bandwidth", &ng_parse_uint64_type }, \
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{ "BER", &ng_parse_uint64_type }, \
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{ "queuelen", &ng_parse_uint32_type }, \
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{ "delaylen", &ng_parse_uint32_type }, \
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{ "duplicate", &ng_parse_uint32_type }, \
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{ "fifo", &ng_parse_uint32_type }, \
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{ "drr", &ng_parse_uint32_type }, \
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{ "wfq", &ng_parse_uint32_type }, \
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{ "droptail", &ng_parse_uint32_type }, \
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{ "drophead", &ng_parse_uint32_type }, \
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{ NULL }, \
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}
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/* Config structure returned by NGM_PIPE_GET_CFG */
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struct ng_pipe_cfg {
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u_int64_t bandwidth;
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u_int64_t delay;
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u_int32_t header_offset;
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u_int32_t overhead;
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struct ng_pipe_hookcfg downstream;
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struct ng_pipe_hookcfg upstream;
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};
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/* Keep this in sync with the above structure definition */
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#define NG_PIPE_CFG_INFO(hstype) { \
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{ "bandwidth", &ng_parse_uint64_type }, \
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{ "delay", &ng_parse_uint64_type }, \
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{ "header_offset", &ng_parse_uint32_type }, \
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{ "overhead", &ng_parse_uint32_type }, \
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{ "downstream", (hstype) }, \
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{ "upstream", (hstype) }, \
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{ NULL }, \
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}
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/* Netgraph commands */
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enum {
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NGM_PIPE_GET_STATS=1, /* get stats */
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NGM_PIPE_CLR_STATS, /* clear stats */
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NGM_PIPE_GETCLR_STATS, /* atomically get and clear stats */
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NGM_PIPE_GET_RUN, /* get current runtime status */
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NGM_PIPE_GET_CFG, /* get configurable parameters */
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NGM_PIPE_SET_CFG, /* set configurable parameters */
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};
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#endif /* _NETGRAPH_PIPE_H_ */
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