/*      $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);
}

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.