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qdisc_conf.c revision 1.1 
      1 /*	$KAME: qdisc_conf.c,v 1.3 2000/10/18 09:15:16 kjc Exp $	*/
      2 /*
      3  * Copyright (C) 1999-2000
      4  *	Sony Computer Science Laboratories, Inc.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND
     16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     18  * ARE DISCLAIMED.  IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/param.h>
     29 #include <sys/socket.h>
     30 #if defined(__NetBSD__) || defined(__OpenBSD__)
     31 #include <sys/ioctl.h>
     32 #endif
     33 #include <sys/fcntl.h>
     34 #include <net/if.h>
     35 #include <netinet/in.h>
     36 #include <altq/altq.h>
     37 
     38 #include <stdio.h>
     39 #include <stdlib.h>
     40 #include <unistd.h>
     41 #include <string.h>
     42 #include <err.h>
     43 
     44 #include "altqstat.h"
     45 
     46 #define ALTQ_DEVICE	"/dev/altq/altq"
     47 
     48 struct qdisc_conf qdisc_table[] = {
     49 	{"cbq",		ALTQT_CBQ,	cbq_stat_loop},
     50 	{"hfsc",	ALTQT_HFSC,	hfsc_stat_loop},
     51 	{"cdnr",	ALTQT_CDNR,	cdnr_stat_loop},
     52 	{"wfq",		ALTQT_WFQ,	wfq_stat_loop},
     53 	{"fifoq",	ALTQT_FIFOQ,	fifoq_stat_loop},
     54 	{"red",		ALTQT_RED,	red_stat_loop},
     55 	{"rio",		ALTQT_RIO,	rio_stat_loop},
     56 	{"blue",	ALTQT_BLUE,	blue_stat_loop},
     57 	{"priq",	ALTQT_PRIQ,	priq_stat_loop},
     58 	{NULL, 		0,		NULL}
     59 };
     60 
     61 stat_loop_t *
     62 qdisc2stat_loop(const char *qdisc_name)
     63 {
     64 	struct qdisc_conf *stat;
     65 
     66 	for (stat = qdisc_table; stat->qdisc_name != NULL; stat++)
     67 		if (strcmp(stat->qdisc_name, qdisc_name) == 0)
     68 			return (stat->stat_loop);
     69 	return (NULL);
     70 }
     71 
     72 int
     73 ifname2qdisc(const char *ifname, char *qname)
     74 {
     75 	struct altqreq qtypereq;
     76 	int fd, qtype = 0;
     77 
     78 	if (ifname[0] == '_') {
     79 		/* input interface */
     80 		if (qname != NULL)
     81 			strcpy(qname, "cdnr");
     82 		return (ALTQT_CDNR);
     83 	}
     84 
     85 	strcpy(qtypereq.ifname, ifname);
     86 	if ((fd = open(ALTQ_DEVICE, O_RDONLY)) < 0) {
     87 		warn("can't open %s", ALTQ_DEVICE);
     88 		return (0);
     89 	}
     90 	if (ioctl(fd, ALTQGTYPE, &qtypereq) < 0) {
     91 		warn("ALTQGQTYPE");
     92 		return (0);
     93 	}
     94 	close(fd);
     95 
     96 	if (qname != NULL) {
     97 		struct qdisc_conf *stat;
     98 
     99 		qtype = qtypereq.arg;
    100 		for (stat = qdisc_table; stat->qdisc_name != NULL; stat++)
    101 			if (stat->altqtype == qtype)
    102 				strcpy(qname, stat->qdisc_name);
    103 	}
    104 
    105 	return (qtype);
    106 }
    107 
    108