usr.sbin/altq/altqstat/qdisc_conf.c

   1 /*      $NetBSD: qdisc_conf.c,v 1.4 2006/10/12 19:59:13 peter Exp $     */
   2 /*      $KAME: qdisc_conf.c,v 1.5 2002/10/26 06:59:54 kjc Exp $ */
   3 /*
   4  * Copyright (C) 1999-2000
   5  *      Sony Computer Science Laboratories, Inc.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/socket.h>
  31 #if defined(__NetBSD__) || defined(__OpenBSD__)
  32 #include <sys/ioctl.h>
  33 #endif
  34 #include <sys/fcntl.h>
  35 #include <net/if.h>
  36 #include <netinet/in.h>
  37 #include <altq/altq.h>
  38
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <unistd.h>
  42 #include <string.h>
  43 #include <err.h>
  44
  45 #include "altqstat.h"
  46
  47 #define ALTQ_DEVICE     "/dev/altq/altq"
  48
  49 struct qdisc_conf qdisc_table[] = {
  50         {"cbq",         ALTQT_CBQ,      cbq_stat_loop},
  51         {"hfsc",        ALTQT_HFSC,     hfsc_stat_loop},
  52         {"cdnr",        ALTQT_CDNR,     cdnr_stat_loop},
  53         {"wfq",         ALTQT_WFQ,      wfq_stat_loop},
  54         {"fifoq",       ALTQT_FIFOQ,    fifoq_stat_loop},
  55         {"red",         ALTQT_RED,      red_stat_loop},
  56         {"rio",         ALTQT_RIO,      rio_stat_loop},
  57         {"blue",        ALTQT_BLUE,     blue_stat_loop},
  58         {"priq",        ALTQT_PRIQ,     priq_stat_loop},
  59         {"jobs",        ALTQT_JOBS,     jobs_stat_loop},
  60         {NULL,          0,              NULL}
  61 };
  62
  63 stat_loop_t *
  64 qdisc2stat_loop(const char *qdisc_name)
  65 {
  66         struct qdisc_conf *st;
  67
  68         for (st = qdisc_table; st->qdisc_name != NULL; st++)
  69                 if (strcmp(st->qdisc_name, qdisc_name) == 0)
  70                         return (st->stat_loop);
  71         return (NULL);
  72 }
  73
  74 int
  75 ifname2qdisc(const char *ifname, char *qname)
  76 {
  77         struct altqreq qtypereq;
  78         int fd, qtype = 0;
  79
  80         if (ifname[0] == '_') {
  81                 /* input interface */
  82                 if (qname != NULL)
  83                         strlcpy(qname, "cdnr", 64);
  84                 return (ALTQT_CDNR);
  85         }
  86
  87         strlcpy(qtypereq.ifname, ifname, sizeof(qtypereq.ifname));
  88         if ((fd = open(ALTQ_DEVICE, O_RDONLY)) < 0) {
  89                 warn("can't open %s", ALTQ_DEVICE);
  90                 return (0);
  91         }
  92         if (ioctl(fd, ALTQGTYPE, &qtypereq) < 0) {
  93                 warn("ALTQGQTYPE");
  94                 return (0);
  95         }
  96         close(fd);
  97
  98         if (qname != NULL) {
  99                 struct qdisc_conf *st;
 100
 101                 qtype = qtypereq.arg;
 102                 for (st = qdisc_table; st->qdisc_name != NULL; st++)
 103                         if (st->altqtype == qtype)
 104                                 strlcpy(qname, st->qdisc_name, 64);
 105         }
 106
 107         return (qtype);
 108 }
 109