NetBSD-5.0.2/usr.sbin/altq/libaltq/qop_wfq.c
/* $NetBSD: qop_wfq.c,v 1.6 2008/09/11 17:58:59 joerg Exp $ */
/* $KAME: qop_wfq.c,v 1.6 2001/12/03 08:20:56 kjc Exp $ */
/*
* Copyright (C) 1999-2000
* Sony Computer Science Laboratories, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#include <net/if.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stddef.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <syslog.h>
#include <netdb.h>
#include <altq/altq.h>
#include <altq/altq_wfq.h>
#include "altq_qop.h"
#include "qop_wfq.h"
static int wfq_attach(struct ifinfo *);
static int wfq_detach(struct ifinfo *);
static int wfq_enable(struct ifinfo *);
static int wfq_disable(struct ifinfo *);
#define WFQ_DEVICE "/dev/altq/wfq"
static int wfq_fd = -1;
static int wfq_refcount = 0;
static struct qdisc_ops wfq_qdisc = {
ALTQT_WFQ,
"wfq",
wfq_attach,
wfq_detach,
NULL, /* clear */
wfq_enable,
wfq_disable,
NULL, /* add class */
NULL, /* modify class */
NULL, /* delete class */
NULL, /* add filter */
NULL /* delete filter */
};
/*
* parser interface
*/
#define EQUAL(s1, s2) (strcmp((s1), (s2)) == 0)
int
wfq_interface_parser(const char *ifname, int argc, char **argv)
{
u_int bandwidth = 100000000; /* 100Mbps */
u_int tbrsize = 0;
int hash_policy = 0; /* 0: use default */
int nqueues = 0; /* 0: use default */
int qsize = 0; /* 0: use default */
/*
* process options
*/
while (argc > 0) {
if (EQUAL(*argv, "bandwidth")) {
argc--; argv++;
if (argc > 0)
bandwidth = atobps(*argv);
} else if (EQUAL(*argv, "tbrsize")) {
argc--; argv++;
if (argc > 0)
tbrsize = atobytes(*argv);
} else if (EQUAL(*argv, "nqueues")) {
argc--; argv++;
if (argc > 0)
nqueues = (int)strtol(*argv, NULL, 0);
} else if (EQUAL(*argv, "qsize")) {
argc--; argv++;
if (argc > 0)
qsize = atobytes(*argv);
} else if (EQUAL(*argv, "hash")) {
argc--; argv++;
if (argc > 0) {
if (EQUAL(*argv, "dstaddr"))
hash_policy = WFQ_HASH_DSTADDR;
else if (EQUAL(*argv, "full"))
hash_policy = WFQ_HASH_FULL;
else if (EQUAL(*argv, "srcport"))
hash_policy = WFQ_HASH_SRCPORT;
else if (EQUAL(*argv, "srcaddr"))
hash_policy = WFQ_HASH_SRCADDR;
else {
LOG(LOG_ERR, 0,
"Unknown hash policy '%s'", *argv);
return (0);
}
}
} else if (EQUAL(*argv, "wfq")) {
/* just skip */
} else {
LOG(LOG_ERR, 0, "Unknown keyword '%s'", *argv);
return (0);
}
argc--; argv++;
}
if (qcmd_tbr_register(ifname, bandwidth, tbrsize) != 0)
return (0);
if (qsize != 0 && qsize < 1500) {
LOG(LOG_ERR, 0, "qsize too small: %d bytes", qsize);
return (0);
}
if (qcmd_wfq_add_if(ifname, bandwidth,
hash_policy, nqueues, qsize) != 0)
return (0);
return (1);
}
/*
* qcmd api
*/
int
qcmd_wfq_add_if(const char *ifname, u_int bandwidth, int hash_policy,
int nqueues, int qsize)
{
int error;
error = qop_wfq_add_if(NULL, ifname, bandwidth,
hash_policy, nqueues, qsize);
if (error != 0)
LOG(LOG_ERR, errno, "%s: can't add wfq on interface '%s'",
qoperror(error), ifname);
return (error);
}
/*
* qop api
*/
int
qop_wfq_add_if(struct ifinfo **rp, const char *ifname, u_int bandwidth,
int hash_policy, int nqueues, int qsize)
{
struct ifinfo *ifinfo = NULL;
struct wfq_ifinfo *wfq_ifinfo;
int error;
if ((wfq_ifinfo = calloc(1, sizeof(*wfq_ifinfo))) == NULL)
return (QOPERR_NOMEM);
wfq_ifinfo->hash_policy = hash_policy;
wfq_ifinfo->nqueues = nqueues;
wfq_ifinfo->qsize = qsize;
error = qop_add_if(&ifinfo, ifname, bandwidth,
&wfq_qdisc, wfq_ifinfo);
if (error != 0) {
free(wfq_ifinfo);
return (error);
}
if (rp != NULL)
*rp = ifinfo;
return (0);
}
/*
* system call interfaces for qdisc_ops
*/
static int
wfq_attach(struct ifinfo *ifinfo)
{
struct wfq_interface iface;
struct wfq_ifinfo *wfq_ifinfo;
struct wfq_conf conf;
if (wfq_fd < 0 &&
(wfq_fd = open(WFQ_DEVICE, O_RDWR)) < 0 &&
(wfq_fd = open_module(WFQ_DEVICE, O_RDWR)) < 0) {
LOG(LOG_ERR, errno, "WFQ open");
return (QOPERR_SYSCALL);
}
wfq_refcount++;
memset(&iface, 0, sizeof(iface));
strncpy(iface.wfq_ifacename, ifinfo->ifname, IFNAMSIZ);
if (ioctl(wfq_fd, WFQ_IF_ATTACH, &iface) < 0)
return (QOPERR_SYSCALL);
/* set wfq parameters */
wfq_ifinfo = (struct wfq_ifinfo *)ifinfo->private;
if (wfq_ifinfo->hash_policy != 0 || wfq_ifinfo->nqueues != 0 ||
wfq_ifinfo->qsize != 0) {
memset(&conf, 0, sizeof(conf));
strncpy(conf.iface.wfq_ifacename, ifinfo->ifname, IFNAMSIZ);
conf.hash_policy = wfq_ifinfo->hash_policy;
conf.nqueues = wfq_ifinfo->nqueues;
conf.qlimit = wfq_ifinfo->qsize;
if (ioctl(wfq_fd, WFQ_CONFIG, &conf) < 0) {
LOG(LOG_ERR, errno, "WFQ_CONFIG");
return (QOPERR_SYSCALL);
}
}
#if 1
LOG(LOG_INFO, 0, "wfq attached to %s", iface.wfq_ifacename);
#endif
return (0);
}
static int
wfq_detach(struct ifinfo *ifinfo)
{
struct wfq_interface iface;
memset(&iface, 0, sizeof(iface));
strncpy(iface.wfq_ifacename, ifinfo->ifname, IFNAMSIZ);
if (ioctl(wfq_fd, WFQ_IF_DETACH, &iface) < 0)
return (QOPERR_SYSCALL);
if (--wfq_refcount == 0) {
close(wfq_fd);
wfq_fd = -1;
}
return (0);
}
static int
wfq_enable(struct ifinfo *ifinfo)
{
struct wfq_interface iface;
memset(&iface, 0, sizeof(iface));
strncpy(iface.wfq_ifacename, ifinfo->ifname, IFNAMSIZ);
if (ioctl(wfq_fd, WFQ_ENABLE, &iface) < 0)
return (QOPERR_SYSCALL);
return (0);
}
static int
wfq_disable(struct ifinfo *ifinfo)
{
struct wfq_interface iface;
memset(&iface, 0, sizeof(iface));
strncpy(iface.wfq_ifacename, ifinfo->ifname, IFNAMSIZ);
if (ioctl(wfq_fd, WFQ_DISABLE, &iface) < 0)
return (QOPERR_SYSCALL);
return (0);
}