283 lines
6.9 KiB
C
283 lines
6.9 KiB
C
/* $KAME: qop_wfq.c,v 1.3 2000/10/18 09:15:20 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_wfq.h>
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#include "altq_qop.h"
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#include "qop_wfq.h"
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static int wfq_attach(struct ifinfo *ifinfo);
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static int wfq_detach(struct ifinfo *ifinfo);
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static int wfq_enable(struct ifinfo *ifinfo);
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static int wfq_disable(struct ifinfo *ifinfo);
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#define WFQ_DEVICE "/dev/altq/wfq"
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static int wfq_fd = -1;
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static int wfq_refcount = 0;
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static struct qdisc_ops wfq_qdisc = {
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ALTQT_WFQ,
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"wfq",
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wfq_attach,
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wfq_detach,
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NULL, /* clear */
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wfq_enable,
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wfq_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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wfq_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 hash_policy = 0; /* 0: use default */
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int nqueues = 0; /* 0: use default */
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int qsize = 0; /* 0: use default */
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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, "nqueues")) {
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argc--; argv++;
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if (argc > 0)
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nqueues = (int)strtol(*argv, NULL, 0);
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} else if (EQUAL(*argv, "qsize")) {
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argc--; argv++;
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if (argc > 0)
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qsize = atobytes(*argv);
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} else if (EQUAL(*argv, "hash")) {
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argc--; argv++;
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if (argc > 0) {
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if (EQUAL(*argv, "dstaddr"))
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hash_policy = WFQ_HASH_DSTADDR;
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else if (EQUAL(*argv, "full"))
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hash_policy = WFQ_HASH_FULL;
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else if (EQUAL(*argv, "srcport"))
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hash_policy = WFQ_HASH_SRCPORT;
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else {
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LOG(LOG_ERR, 0,
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"Unknown hash policy '%s'\n",
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argv);
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return (0);
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}
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}
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} else if (EQUAL(*argv, "wfq")) {
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/* just skip */
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} else {
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LOG(LOG_ERR, 0, "Unknown keyword '%s'\n", 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 (qsize != 0 && qsize < 1500) {
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LOG(LOG_ERR, 0, "qsize too small: %d bytes", qsize);
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return (0);
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}
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if (qcmd_wfq_add_if(ifname, bandwidth,
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hash_policy, nqueues, qsize) != 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_wfq_add_if(const char *ifname, u_int bandwidth, int hash_policy,
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int nqueues, int qsize)
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{
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int error;
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error = qop_wfq_add_if(NULL, ifname, bandwidth,
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hash_policy, nqueues, qsize);
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if (error != 0)
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LOG(LOG_ERR, errno, "%s: can't add wfq on interface '%s'\n",
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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_wfq_add_if(struct ifinfo **rp, const char *ifname, u_int bandwidth,
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int hash_policy, int nqueues, int qsize)
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{
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struct ifinfo *ifinfo = NULL;
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struct wfq_ifinfo *wfq_ifinfo;
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int error;
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if ((wfq_ifinfo = calloc(1, sizeof(*wfq_ifinfo))) == NULL)
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return (QOPERR_NOMEM);
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wfq_ifinfo->hash_policy = hash_policy;
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wfq_ifinfo->nqueues = nqueues;
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wfq_ifinfo->qsize = qsize;
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error = qop_add_if(&ifinfo, ifname, bandwidth,
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&wfq_qdisc, wfq_ifinfo);
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if (error != 0) {
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free(wfq_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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wfq_attach(struct ifinfo *ifinfo)
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{
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struct wfq_interface iface;
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struct wfq_ifinfo *wfq_ifinfo;
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struct wfq_conf conf;
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if (wfq_fd < 0 &&
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(wfq_fd = open(WFQ_DEVICE, O_RDWR)) < 0 &&
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(wfq_fd = open_module(WFQ_DEVICE, O_RDWR)) < 0) {
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LOG(LOG_ERR, errno, "WFQ open\n");
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return (QOPERR_SYSCALL);
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}
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wfq_refcount++;
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memset(&iface, 0, sizeof(iface));
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strncpy(iface.wfq_ifacename, ifinfo->ifname, IFNAMSIZ);
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if (ioctl(wfq_fd, WFQ_IF_ATTACH, &iface) < 0)
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return (QOPERR_SYSCALL);
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/* set wfq parameters */
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wfq_ifinfo = (struct wfq_ifinfo *)ifinfo->private;
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if (wfq_ifinfo->hash_policy != 0 || wfq_ifinfo->nqueues != 0 ||
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wfq_ifinfo->qsize != 0) {
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memset(&conf, 0, sizeof(conf));
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strncpy(conf.iface.wfq_ifacename, ifinfo->ifname, IFNAMSIZ);
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conf.hash_policy = wfq_ifinfo->hash_policy;
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conf.nqueues = wfq_ifinfo->nqueues;
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conf.qlimit = wfq_ifinfo->qsize;
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if (ioctl(wfq_fd, WFQ_CONFIG, &conf) < 0) {
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LOG(LOG_ERR, errno, "WFQ_CONFIG\n");
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return (QOPERR_SYSCALL);
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}
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}
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#if 1
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LOG(LOG_INFO, 0, "wfq attached to %s\n", iface.wfq_ifacename);
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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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wfq_detach(struct ifinfo *ifinfo)
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{
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struct wfq_interface iface;
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memset(&iface, 0, sizeof(iface));
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strncpy(iface.wfq_ifacename, ifinfo->ifname, IFNAMSIZ);
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if (ioctl(wfq_fd, WFQ_IF_DETACH, &iface) < 0)
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return (QOPERR_SYSCALL);
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if (--wfq_refcount == 0) {
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close(wfq_fd);
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wfq_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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wfq_enable(struct ifinfo *ifinfo)
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{
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struct wfq_interface iface;
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memset(&iface, 0, sizeof(iface));
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strncpy(iface.wfq_ifacename, ifinfo->ifname, IFNAMSIZ);
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if (ioctl(wfq_fd, WFQ_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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wfq_disable(struct ifinfo *ifinfo)
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{
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struct wfq_interface iface;
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memset(&iface, 0, sizeof(iface));
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strncpy(iface.wfq_ifacename, ifinfo->ifname, IFNAMSIZ);
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if (ioctl(wfq_fd, WFQ_DISABLE, &iface) < 0)
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return (QOPERR_SYSCALL);
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return (0);
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}
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