709 lines
18 KiB
C
709 lines
18 KiB
C
/* $KAME: qop_jobs.c,v 1.2 2002/10/26 07:09:22 kjc Exp $ */
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/*
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* Copyright (c) 2001-2002, by the Rector and Board of Visitors of
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* the University of Virginia.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* Neither the name of the University of Virginia nor the names
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* of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (C) 1999-2000
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* Sony Computer Science Laboratories, Inc. All rights reserved.
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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 SONY CSL 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 SONY CSL 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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/*
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* JoBS - altq prototype implementation
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*
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* Author: Nicolas Christin <nicolas@cs.virginia.edu>
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*
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* JoBS algorithms originally devised and proposed by
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* Nicolas Christin and Jorg Liebeherr.
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* Grateful Acknowledgments to Tarek Abdelzaher for his help and
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* comments, and to Kenjiro Cho for some helpful advice.
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* Contributed by the Multimedia Networks Group at the University
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* of Virginia.
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*
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* http://qosbox.cs.virginia.edu
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*
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/ioctl.h>
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#include <sys/fcntl.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stddef.h>
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#include <string.h>
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#include <ctype.h>
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#include <errno.h>
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#include <syslog.h>
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#include <netdb.h>
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#include <altq/altq.h>
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#include <altq/altq_var.h>
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#include <altq/altq_jobs.h>
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#include "altq_qop.h"
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#include "qop_jobs.h"
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#define SCALE_LOSS 32
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#if 0
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static int qop_jobs_enable_hook(struct ifinfo *);
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#endif
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static int qop_jobs_delete_class_hook(struct classinfo *);
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static int jobs_attach(struct ifinfo *);
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static int jobs_detach(struct ifinfo *);
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static int jobs_clear(struct ifinfo *);
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static int jobs_enable(struct ifinfo *);
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static int jobs_disable(struct ifinfo *);
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static int jobs_add_class(struct classinfo *);
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static int jobs_modify_class(struct classinfo *, void *);
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static int jobs_delete_class(struct classinfo *);
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static int jobs_add_filter(struct fltrinfo *);
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static int jobs_delete_filter(struct fltrinfo *);
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#define JOBS_DEVICE "/dev/altq/jobs"
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static int jobs_fd = -1;
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static int jobs_refcount = 0;
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static struct qdisc_ops jobs_qdisc = {
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ALTQT_JOBS,
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"jobs",
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jobs_attach,
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jobs_detach,
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jobs_clear,
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jobs_enable,
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jobs_disable,
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jobs_add_class,
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jobs_modify_class,
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jobs_delete_class,
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jobs_add_filter,
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jobs_delete_filter
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};
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/*
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* parser interface
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*/
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#define EQUAL(s1, s2) (strcmp((s1), (s2)) == 0)
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int
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jobs_interface_parser(const char *ifname, int argc, char **argv)
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{
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u_int bandwidth = 100000000; /* 100 Mbps */
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u_int tbrsize = 0;
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int qlimit = 200; /* 200 packets */
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int separate = 0; /* by default: shared buffer */
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/*
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* process options
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*/
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while (argc > 0) {
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if (EQUAL(*argv, "bandwidth")) {
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argc--; argv++;
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if (argc > 0)
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bandwidth = atobps(*argv);
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} else if (EQUAL(*argv, "tbrsize")) {
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argc--; argv++;
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if (argc > 0)
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tbrsize = atobytes(*argv);
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} else if (EQUAL(*argv, "qlimit")) {
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argc--; argv++;
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if (argc > 0)
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qlimit = (int)strtol(*argv, NULL, 0);
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} else if (EQUAL(*argv, "separate")) {
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argc--; argv++;
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separate = 1;
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} else if (EQUAL(*argv, "jobs")) {
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/* just skip */
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} else {
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LOG(LOG_ERR, 0, "Unknown keyword '%s'", *argv);
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return (0);
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}
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argc--; argv++;
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}
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if (qcmd_tbr_register(ifname, bandwidth, tbrsize) != 0)
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return (0);
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if (qcmd_jobs_add_if(ifname, bandwidth, qlimit, separate) != 0)
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return (0);
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return (1);
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}
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int
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jobs_class_parser(const char *ifname, const char *class_name,
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const char *parent_name, int argc, char **argv)
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{
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int64_t adc, rdc, alc, rlc, arc;
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int pri = 0;
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int flags = 0;
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int error;
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/* disable everything by default */
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adc = -1;
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rdc = -1;
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arc = -1;
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alc = -1;
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rlc = -1;
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while (argc > 0) {
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if (EQUAL(*argv, "priority")) {
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argc--; argv++;
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if (argc > 0) {
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if (strtol(*argv, NULL, 0) < 0)
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pri = 0;
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else
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pri = strtol(*argv, NULL, 0);
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}
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} else if (EQUAL(*argv, "adc")) {
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argc--; argv++;
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if (argc > 0) {
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if (strtol(*argv, NULL, 0) < 0)
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adc = -1;
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else
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adc = strtol(*argv, NULL, 0);
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}
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} else if (EQUAL(*argv, "rdc")) {
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argc--; argv++;
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if (argc > 0) {
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if (strtol(*argv, NULL, 0) < 0)
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rdc = -1;
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else
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rdc = strtol(*argv, NULL, 0);
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}
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} else if (EQUAL(*argv, "alc")) {
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argc--; argv++;
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if (argc > 0) {
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if (strtol(*argv, NULL, 0) < 0)
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alc = -1;
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else
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alc = (int64_t)(strtod(*argv, NULL)
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* ((int64_t)1 << SCALE_LOSS));
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/*
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* alc is given in fraction of 1, convert it
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* to a fraction of 2^(SCALE_LOSS)
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*/
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}
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} else if (EQUAL(*argv, "rlc")) {
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argc--; argv++;
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if (argc > 0) {
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if (strtol(*argv, NULL, 0) < 0)
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rlc = -1;
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else
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rlc = strtol(*argv, NULL, 0);
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}
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} else if (EQUAL(*argv, "arc")) {
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argc--; argv++;
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if (argc > 0) {
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if (EQUAL(*argv,"-1"))
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arc = -1;
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else
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arc = atobps(*argv);
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}
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} else if (EQUAL(*argv, "default")) {
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flags |= JOCF_DEFAULTCLASS;
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} else {
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LOG(LOG_ERR, 0,
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"Unknown keyword '%s' in %s, line %d",
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*argv, altqconfigfile, line_no);
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return (0);
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}
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argc--; argv++;
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}
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error = qcmd_jobs_add_class(ifname, class_name, pri,
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adc, rdc, alc, rlc, arc, flags);
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if (error) {
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LOG(LOG_ERR, errno, "jobs_class_parser: %s",
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qoperror(error));
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return (0);
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}
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return (1);
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}
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/*
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* qcmd api
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*/
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int
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qcmd_jobs_add_if(const char *ifname, u_int bandwidth, int qlimit, int separate)
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{
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int error;
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error = qop_jobs_add_if(NULL, ifname, bandwidth, qlimit, separate);
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if (error != 0)
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LOG(LOG_ERR, errno, "%s: can't add jobs on interface '%s'",
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qoperror(error), ifname);
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return (error);
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}
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int
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qcmd_jobs_add_class(const char *ifname, const char *class_name, int pri,
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int64_t adc, int64_t rdc, int64_t alc, int64_t rlc, int64_t arc,
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int flags)
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{
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struct ifinfo *ifinfo;
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int error = 0;
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char name_adc[20],name_alc[20],name_rdc[20],name_rlc[20],name_arc[20];
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if ((ifinfo = ifname2ifinfo(ifname)) == NULL)
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error = QOPERR_BADIF;
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if (error == 0)
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error = qop_jobs_add_class(NULL, class_name, ifinfo,
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pri, adc, rdc, alc, rlc, arc, flags);
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if (error != 0)
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LOG(LOG_ERR, errno,
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"jobs: %s: can't add class '%s' on interface '%s'",
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qoperror(error), class_name, ifname);
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else {
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if (adc > 0)
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sprintf(name_adc,"%.3f ms",(double)adc/1000.);
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else
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sprintf(name_adc,"N/A");
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if (alc > 0)
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sprintf(name_alc,"%.2f%%",
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(double)100*alc/((u_int64_t)1 << SCALE_LOSS));
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else
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sprintf(name_alc,"N/A");
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if (rdc > 0)
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sprintf(name_rdc,"%d",(int)rdc);
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else
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sprintf(name_rdc,"N/A");
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if (rlc > 0)
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sprintf(name_rlc,"%d",(int)rlc);
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else
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sprintf(name_rlc,"N/A");
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if (arc > 0)
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sprintf(name_arc,"%.2f Mbps",(double)arc/1000000.);
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else
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sprintf(name_arc,"N/A");
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LOG(LOG_INFO, 0,
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"added '%s' (pri=%d,adc=%s,rdc=%s,alc=%s,rlc=%s,arc=%s) on interface '%s'\n",
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class_name,pri,name_adc,name_rdc,name_alc,name_rlc,name_arc,ifname);
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}
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return (error);
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}
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int
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qcmd_jobs_modify_class(const char *ifname, const char *class_name, int pri,
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int64_t adc, int64_t rdc, int64_t alc, int64_t rlc, int64_t arc)
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{
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struct ifinfo *ifinfo;
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struct classinfo *clinfo;
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if ((ifinfo = ifname2ifinfo(ifname)) == NULL)
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return (QOPERR_BADIF);
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if ((clinfo = clname2clinfo(ifinfo, class_name)) == NULL)
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return (QOPERR_BADCLASS);
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return qop_jobs_modify_class(clinfo, pri, adc, rdc, alc, rlc, arc);
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}
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/*
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* qop api
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*/
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int
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qop_jobs_add_if(struct ifinfo **rp, const char *ifname,
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u_int bandwidth, int qlimit, int separate)
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{
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struct ifinfo *ifinfo = NULL;
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struct jobs_ifinfo *jobs_ifinfo;
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int error;
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if ((jobs_ifinfo = calloc(1, sizeof(*jobs_ifinfo))) == NULL)
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return (QOPERR_NOMEM);
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jobs_ifinfo->qlimit = qlimit;
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jobs_ifinfo->separate = separate;
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error = qop_add_if(&ifinfo, ifname, bandwidth,
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&jobs_qdisc, jobs_ifinfo);
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if (error != 0) {
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free(jobs_ifinfo);
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return (error);
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}
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if (rp != NULL)
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*rp = ifinfo;
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return (0);
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}
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int
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qop_jobs_add_class(struct classinfo **rp, const char *class_name,
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struct ifinfo *ifinfo, int pri,
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int64_t adc, int64_t rdc, int64_t alc, int64_t rlc, int64_t arc,
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int flags)
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{
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struct classinfo *clinfo;
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struct jobs_ifinfo *jobs_ifinfo;
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struct jobs_classinfo *jobs_clinfo = NULL;
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int error;
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jobs_ifinfo = ifinfo->private;
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if ((flags & JOCF_DEFAULTCLASS) && jobs_ifinfo->default_class != NULL)
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return (QOPERR_CLASS_INVAL);
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if ((jobs_clinfo = calloc(1, sizeof(*jobs_clinfo))) == NULL) {
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error = QOPERR_NOMEM;
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goto err_ret;
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}
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jobs_clinfo->pri = pri;
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jobs_clinfo->adc = adc;
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jobs_clinfo->rdc = rdc;
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jobs_clinfo->alc = alc;
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jobs_clinfo->rlc = rlc;
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jobs_clinfo->arc = arc;
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jobs_clinfo->flags = flags;
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if ((error = qop_add_class(&clinfo, class_name, ifinfo, NULL,
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jobs_clinfo)) != 0)
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goto err_ret;
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/* set delete hook */
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clinfo->delete_hook = qop_jobs_delete_class_hook;
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if (flags & JOCF_DEFAULTCLASS)
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jobs_ifinfo->default_class = clinfo;
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if (rp != NULL)
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*rp = clinfo;
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return (0);
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err_ret:
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if (jobs_clinfo != NULL) {
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free(jobs_clinfo);
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clinfo->private = NULL;
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}
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return (error);
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}
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/*
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* this is called from qop_delete_class() before a class is destroyed
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* for discipline specific cleanup.
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*/
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static int
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qop_jobs_delete_class_hook(struct classinfo *clinfo)
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{
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/* in fact this function doesn't do anything
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* i'm not sure how/when it's used, so I just
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* leave it here
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*/
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struct jobs_classinfo *jobs_clinfo;
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jobs_clinfo = clinfo->private;
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return (0);
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}
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int
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qop_jobs_modify_class(struct classinfo *clinfo, int pri,
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int64_t adc, int64_t rdc, int64_t alc, int64_t rlc, int64_t arc)
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{
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struct jobs_classinfo *jobs_clinfo = clinfo->private;
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int error;
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int pri_old;
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int64_t adc_old, rdc_old, alc_old, rlc_old, arc_old;
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pri_old = jobs_clinfo->pri;
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adc_old = jobs_clinfo->adc;
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rdc_old = jobs_clinfo->rdc;
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alc_old = jobs_clinfo->alc;
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rlc_old = jobs_clinfo->rlc;
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arc_old = jobs_clinfo->arc;
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jobs_clinfo = clinfo->private;
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jobs_clinfo->adc = adc;
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jobs_clinfo->rdc = rdc;
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jobs_clinfo->alc = alc;
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jobs_clinfo->rlc = rlc;
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jobs_clinfo->arc = arc;
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jobs_clinfo->pri = pri;
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error = qop_modify_class(clinfo, NULL);
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if (error == 0)
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return (0);
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/* modify failed!, restore the old service guarantees */
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jobs_clinfo->adc = adc_old;
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jobs_clinfo->rdc = rdc_old;
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jobs_clinfo->alc = alc_old;
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jobs_clinfo->rlc = rlc_old;
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jobs_clinfo->arc = arc_old;
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jobs_clinfo->pri = pri_old;
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return (error);
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}
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#if 0
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/*
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* sanity check at enabling jobs:
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* there must one default class for an interface
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*/
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static int
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qop_jobs_enable_hook(struct ifinfo *ifinfo)
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{
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struct jobs_ifinfo *jobs_ifinfo;
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jobs_ifinfo = ifinfo->private;
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if (jobs_ifinfo->default_class == NULL) {
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LOG(LOG_ERR, 0, "jobs: no default class on interface %s!",
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ifinfo->ifname);
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return (QOPERR_CLASS);
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}
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return (0);
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}
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#endif
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/*
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* system call interfaces for qdisc_ops
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*/
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static int
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jobs_attach(struct ifinfo *ifinfo)
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{
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struct jobs_attach attach;
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if (jobs_fd < 0 &&
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(jobs_fd = open(JOBS_DEVICE, O_RDWR)) < 0 &&
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(jobs_fd = open_module(JOBS_DEVICE, O_RDWR)) < 0) {
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LOG(LOG_ERR, errno, "JOBS open");
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return (QOPERR_SYSCALL);
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}
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jobs_refcount++;
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memset(&attach, 0, sizeof(attach));
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strncpy(attach.iface.jobs_ifname, ifinfo->ifname, IFNAMSIZ);
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attach.bandwidth = ifinfo->bandwidth;
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attach.qlimit = (u_int)((struct jobs_ifinfo*)ifinfo->private)->qlimit;
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attach.separate = (u_int)((struct jobs_ifinfo*)ifinfo->private)->separate;
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if (ioctl(jobs_fd, JOBS_IF_ATTACH, (struct jobs_attach*) &attach) < 0)
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return (QOPERR_SYSCALL);
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#if 1
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LOG(LOG_INFO, 0,
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"jobs attached to %s (b/w = %d bps, buff = %d pkts [%s])\n",
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attach.iface.jobs_ifname,
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(int) attach.bandwidth, (int) attach.qlimit,
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attach.separate?"separate buffers":"shared buffer");
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#endif
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return (0);
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}
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static int
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jobs_detach(struct ifinfo *ifinfo)
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{
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struct jobs_interface iface;
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memset(&iface, 0, sizeof(iface));
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strncpy(iface.jobs_ifname, ifinfo->ifname, IFNAMSIZ);
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if (ioctl(jobs_fd, JOBS_IF_DETACH, &iface) < 0)
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return (QOPERR_SYSCALL);
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if (--jobs_refcount == 0) {
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close(jobs_fd);
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jobs_fd = -1;
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}
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return (0);
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}
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static int
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jobs_enable(struct ifinfo *ifinfo)
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{
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struct jobs_interface iface;
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memset(&iface, 0, sizeof(iface));
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strncpy(iface.jobs_ifname, ifinfo->ifname, IFNAMSIZ);
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if (ioctl(jobs_fd, JOBS_ENABLE, &iface) < 0)
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return (QOPERR_SYSCALL);
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return (0);
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}
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static int
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jobs_disable(struct ifinfo *ifinfo)
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{
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struct jobs_interface iface;
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memset(&iface, 0, sizeof(iface));
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strncpy(iface.jobs_ifname, ifinfo->ifname, IFNAMSIZ);
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if (ioctl(jobs_fd, JOBS_DISABLE, &iface) < 0)
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return (QOPERR_SYSCALL);
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return (0);
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}
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static int
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jobs_clear(struct ifinfo *ifinfo)
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{
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struct jobs_interface iface;
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memset(&iface, 0, sizeof(iface));
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strncpy(iface.jobs_ifname, ifinfo->ifname, IFNAMSIZ);
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if (ioctl(jobs_fd, JOBS_CLEAR, &iface) < 0)
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return (QOPERR_SYSCALL);
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return (0);
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}
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static int
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jobs_add_class(struct classinfo *clinfo)
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{
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struct jobs_add_class class_add;
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struct jobs_classinfo *jobs_clinfo;
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struct jobs_ifinfo *jobs_ifinfo;
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jobs_ifinfo = clinfo->ifinfo->private;
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jobs_clinfo = clinfo->private;
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memset(&class_add, 0, sizeof(class_add));
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strncpy(class_add.iface.jobs_ifname, clinfo->ifinfo->ifname, IFNAMSIZ);
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class_add.pri = jobs_clinfo->pri;
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class_add.cl_adc = jobs_clinfo->adc;
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class_add.cl_rdc = jobs_clinfo->rdc;
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class_add.cl_alc = jobs_clinfo->alc;
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class_add.cl_rlc = jobs_clinfo->rlc;
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class_add.cl_arc = jobs_clinfo->arc;
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class_add.flags = jobs_clinfo->flags;
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if (ioctl(jobs_fd, JOBS_ADD_CLASS, &class_add) < 0) {
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clinfo->handle = JOBS_NULLCLASS_HANDLE;
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return (QOPERR_SYSCALL);
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}
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clinfo->handle = class_add.class_handle;
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return (0);
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}
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static int
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jobs_modify_class(struct classinfo *clinfo, void *arg)
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{
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struct jobs_modify_class class_mod;
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struct jobs_classinfo *jobs_clinfo;
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jobs_clinfo = clinfo->private;
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memset(&class_mod, 0, sizeof(class_mod));
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strncpy(class_mod.iface.jobs_ifname, clinfo->ifinfo->ifname, IFNAMSIZ);
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class_mod.class_handle = clinfo->handle;
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class_mod.pri = jobs_clinfo->pri;
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class_mod.cl_adc = jobs_clinfo->adc;
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class_mod.cl_rdc = jobs_clinfo->rdc;
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class_mod.cl_alc = jobs_clinfo->alc;
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class_mod.cl_rlc = jobs_clinfo->rlc;
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class_mod.cl_arc = jobs_clinfo->arc;
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class_mod.flags = jobs_clinfo->flags;
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if (ioctl(jobs_fd, JOBS_MOD_CLASS, &class_mod) < 0)
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return (QOPERR_SYSCALL);
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return (0);
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}
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static int
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jobs_delete_class(struct classinfo *clinfo)
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{
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struct jobs_delete_class class_delete;
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if (clinfo->handle == JOBS_NULLCLASS_HANDLE)
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return (0);
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memset(&class_delete, 0, sizeof(class_delete));
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strncpy(class_delete.iface.jobs_ifname, clinfo->ifinfo->ifname,
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IFNAMSIZ);
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class_delete.class_handle = clinfo->handle;
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if (ioctl(jobs_fd, JOBS_DEL_CLASS, &class_delete) < 0)
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return (QOPERR_SYSCALL);
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return (0);
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}
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static int
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jobs_add_filter(struct fltrinfo *fltrinfo)
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{
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struct jobs_add_filter fltr_add;
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memset(&fltr_add, 0, sizeof(fltr_add));
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strncpy(fltr_add.iface.jobs_ifname, fltrinfo->clinfo->ifinfo->ifname,
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IFNAMSIZ);
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fltr_add.class_handle = fltrinfo->clinfo->handle;
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fltr_add.filter = fltrinfo->fltr;
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if (ioctl(jobs_fd, JOBS_ADD_FILTER, &fltr_add) < 0)
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return (QOPERR_SYSCALL);
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fltrinfo->handle = fltr_add.filter_handle;
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return (0);
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}
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static int
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jobs_delete_filter(struct fltrinfo *fltrinfo)
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{
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struct jobs_delete_filter fltr_del;
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memset(&fltr_del, 0, sizeof(fltr_del));
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strncpy(fltr_del.iface.jobs_ifname, fltrinfo->clinfo->ifinfo->ifname,
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IFNAMSIZ);
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fltr_del.filter_handle = fltrinfo->handle;
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if (ioctl(jobs_fd, JOBS_DEL_FILTER, &fltr_del) < 0)
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return (QOPERR_SYSCALL);
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return (0);
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}
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