279 lines
7.0 KiB
C
279 lines
7.0 KiB
C
/* $NetBSD: qop_blue.c,v 1.4 2001/08/22 08:52:37 itojun Exp $ */
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/* $KAME: qop_blue.c,v 1.5 2001/08/16 10:39:13 kjc Exp $ */
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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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#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_blue.h>
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#include "altq_qop.h"
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#include "qop_blue.h"
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static int blue_attach(struct ifinfo *);
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static int blue_detach(struct ifinfo *);
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static int blue_enable(struct ifinfo *);
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static int blue_disable(struct ifinfo *);
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#define BLUE_DEVICE "/dev/altq/blue"
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static int blue_fd = -1;
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static int blue_refcount = 0;
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static struct qdisc_ops blue_qdisc = {
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ALTQT_BLUE,
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"blue",
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blue_attach,
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blue_detach,
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NULL, /* clear */
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blue_enable,
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blue_disable,
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NULL, /* add class */
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NULL, /* modify class */
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NULL, /* delete class */
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NULL, /* add filter */
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NULL /* 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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blue_interface_parser(const char *ifname, int argc, char **argv)
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{
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u_int bandwidth = 100000000; /* 100Mbps */
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u_int tbrsize = 0;
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int max_pmark = 4000;
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int hold_time = 1000;
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int qlimit = 60;
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int pkttime = 0;
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int flags = 0;
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int packet_size = 1000;
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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, "packetsize")) {
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argc--; argv++;
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if (argc > 0)
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packet_size = 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, "maxpmark")) {
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argc--; argv++;
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if (argc > 0)
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max_pmark = (int)strtol(*argv, NULL, 0);
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} else if (EQUAL(*argv, "holdtime")) {
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argc--; argv++;
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if (argc > 0)
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hold_time = (int)strtol(*argv, NULL, 0);
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} else if (EQUAL(*argv, "blue")) {
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/* just skip */
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} else if (EQUAL(*argv, "ecn")) {
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flags |= BLUEF_ECN;
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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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pkttime = packet_size * 8 * 1000 / (bandwidth / 1000);
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if (qcmd_blue_add_if(ifname, bandwidth, max_pmark, hold_time,
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qlimit, pkttime, flags) != 0)
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return (0);
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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_blue_add_if(const char *ifname, u_int bandwidth, int max_pmark,
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int hold_time, int qlimit, int pkttime, int flags)
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{
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int error;
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error = qop_blue_add_if(NULL, ifname, bandwidth, max_pmark, hold_time,
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qlimit, pkttime, flags);
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if (error != 0)
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LOG(LOG_ERR, errno, "%s: can't add blue on interface '%s'",
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qoperror(error), ifname);
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return (error);
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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_blue_add_if(struct ifinfo **rp, const char *ifname, u_int bandwidth,
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int max_pmark, int hold_time, int qlimit,
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int pkttime, int flags)
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{
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struct ifinfo *ifinfo = NULL;
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struct blue_ifinfo *blue_ifinfo;
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int error;
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if ((blue_ifinfo = calloc(1, sizeof(*blue_ifinfo))) == NULL)
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return (QOPERR_NOMEM);
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blue_ifinfo->max_pmark = max_pmark;
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blue_ifinfo->hold_time = hold_time;
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blue_ifinfo->qlimit = qlimit;
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blue_ifinfo->pkttime = pkttime;
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blue_ifinfo->flags = flags;
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error = qop_add_if(&ifinfo, ifname, bandwidth,
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&blue_qdisc, blue_ifinfo);
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if (error != 0) {
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free(blue_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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/*
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* system call interfaces for qdisc_ops
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*/
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static int
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blue_attach(struct ifinfo *ifinfo)
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{
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struct blue_interface iface;
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struct blue_ifinfo *blue_ifinfo;
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struct blue_conf conf;
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if (blue_fd < 0 &&
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(blue_fd = open(BLUE_DEVICE, O_RDWR)) < 0 &&
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(blue_fd = open_module(BLUE_DEVICE, O_RDWR)) < 0) {
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LOG(LOG_ERR, errno, "BLUE open");
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return (QOPERR_SYSCALL);
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}
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blue_refcount++;
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memset(&iface, 0, sizeof(iface));
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strncpy(iface.blue_ifname, ifinfo->ifname, IFNAMSIZ);
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if (ioctl(blue_fd, BLUE_IF_ATTACH, &iface) < 0)
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return (QOPERR_SYSCALL);
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/* set blue parameters */
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blue_ifinfo = (struct blue_ifinfo *)ifinfo->private;
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memset(&conf, 0, sizeof(conf));
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strncpy(conf.iface.blue_ifname, ifinfo->ifname, IFNAMSIZ);
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conf.blue_max_pmark = blue_ifinfo->max_pmark;
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conf.blue_hold_time = blue_ifinfo->hold_time;
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conf.blue_limit = blue_ifinfo->qlimit;
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conf.blue_pkttime = blue_ifinfo->pkttime;
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conf.blue_flags = blue_ifinfo->flags;
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if (ioctl(blue_fd, BLUE_CONFIG, &conf) < 0)
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return (QOPERR_SYSCALL);
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#if 1
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LOG(LOG_INFO, 0, "blue attached to %s", iface.blue_ifname);
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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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blue_detach(struct ifinfo *ifinfo)
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{
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struct blue_interface iface;
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memset(&iface, 0, sizeof(iface));
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strncpy(iface.blue_ifname, ifinfo->ifname, IFNAMSIZ);
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if (ioctl(blue_fd, BLUE_IF_DETACH, &iface) < 0)
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return (QOPERR_SYSCALL);
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if (--blue_refcount == 0) {
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close(blue_fd);
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blue_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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blue_enable(struct ifinfo *ifinfo)
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{
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struct blue_interface iface;
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memset(&iface, 0, sizeof(iface));
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strncpy(iface.blue_ifname, ifinfo->ifname, IFNAMSIZ);
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if (ioctl(blue_fd, BLUE_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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blue_disable(struct ifinfo *ifinfo)
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{
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struct blue_interface iface;
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memset(&iface, 0, sizeof(iface));
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strncpy(iface.blue_ifname, ifinfo->ifname, IFNAMSIZ);
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if (ioctl(blue_fd, BLUE_DISABLE, &iface) < 0)
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return (QOPERR_SYSCALL);
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return (0);
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}
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