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      1 /*	$NetBSD: qdisc_conf.c,v 1.6 2011/01/04 09:13:22 wiz 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 		close(fd);
     95 		return (0);
     96 	}
     97 	close(fd);
     98 
     99 	if (qname != NULL) {
    100 		struct qdisc_conf *st;
    101 
    102 		qtype = qtypereq.arg;
    103 		for (st = qdisc_table; st->qdisc_name != NULL; st++)
    104 			if (st->altqtype == qtype)
    105 				strlcpy(qname, st->qdisc_name, 64);
    106 	}
    107 
    108 	return (qtype);
    109 }
    110 
    111