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      1 /*	$NetBSD: qop_dummy.c,v 1.7 2002/03/05 04:11:53 itojun Exp $	*/
      2 /*	$KAME: qop_dummy.c,v 1.5 2001/12/03 08:20:55 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 #include <net/if.h>
     32 #include <stdio.h>
     33 #include <errno.h>
     34 #include <syslog.h>
     35 #include <string.h>
     36 
     37 #include <altq/altq.h>
     38 #include "altq_qop.h"
     39 
     40 int null_interface_parser(const char *, int, char **);
     41 int null_class_parser(const char *, const char *, const char *, int, char **);
     42 int qcmd_nop_add_if(const char *);
     43 static int nop_attach(struct ifinfo *);
     44 static int nop_detach(struct ifinfo *);
     45 static int nop_clear(struct ifinfo *);
     46 static int nop_enable(struct ifinfo *);
     47 static int nop_disable(struct ifinfo *);
     48 static int nop_add_class(struct classinfo *);
     49 static int nop_modify_class(struct classinfo *, void *);
     50 static int nop_delete_class(struct classinfo *);
     51 static int nop_add_filter(struct fltrinfo *);
     52 static int nop_delete_filter(struct fltrinfo *);
     53 
     54 struct qdisc_ops nop_qdisc = {
     55 	ALTQT_NONE,
     56 	"nop",
     57 	nop_attach,
     58 	nop_detach,
     59 	nop_clear,
     60 	nop_enable,
     61 	nop_disable,
     62 	nop_add_class,
     63 	nop_modify_class,
     64 	nop_delete_class,
     65 	nop_add_filter,
     66 	nop_delete_filter,
     67 };
     68 
     69 #define EQUAL(s1, s2)	(strcmp((s1), (s2)) == 0)
     70 
     71 /*
     72  * parser interface for null interface
     73  */
     74 int
     75 null_interface_parser(const char *ifname, int argc, char **argv)
     76 {
     77 	u_int  	bandwidth = 0;
     78 	u_int	tbrsize = 0;
     79 
     80 	/*
     81 	 * process options
     82 	 */
     83 	while (argc > 0) {
     84 		if (EQUAL(*argv, "bandwidth")) {
     85 			argc--; argv++;
     86 			if (argc > 0)
     87 				bandwidth = atobps(*argv);
     88 		} else if (EQUAL(*argv, "tbrsize")) {
     89 			argc--; argv++;
     90 			if (argc > 0)
     91 				tbrsize = atobytes(*argv);
     92 		} else {
     93 			LOG(LOG_ERR, 0, "Unknown keyword '%s'", *argv);
     94 			return (0);
     95 		}
     96 		argc--; argv++;
     97 	}
     98 
     99 	if (bandwidth != 0)
    100 		if (qcmd_tbr_register(ifname, bandwidth, tbrsize) != 0)
    101 			return (0);
    102 
    103 	/*
    104 	 * add a dummy interface since traffic conditioner might need it.
    105 	 */
    106 	if (qcmd_nop_add_if(ifname) != 0)
    107 		return (0);
    108 	return (1);
    109 }
    110 
    111 int
    112 null_class_parser(const char *ifname, const char *class_name,
    113 		  const char *parent_name, int argc, char **argv)
    114 {
    115 	LOG(LOG_ERR, 0,
    116 	    "class cannot be defined without a queueing discipline in %s, line %d",
    117 	    altqconfigfile, line_no);
    118 	return (0);
    119 }
    120 
    121 /*
    122  * qcmd api
    123  */
    124 int
    125 qcmd_nop_add_if(const char *ifname)
    126 {
    127 	int error;
    128 
    129 	error = qop_add_if(NULL, ifname, 0, &nop_qdisc, NULL);
    130 	if (error != 0)
    131 		LOG(LOG_ERR, errno, "%s: can't add nop on interface '%s'",
    132 		    qoperror(error), ifname);
    133 	return (error);
    134 }
    135 
    136 /*
    137  * qop api
    138  */
    139 static int nop_attach(struct ifinfo *ifinfo)
    140 {
    141 	return (0);
    142 }
    143 
    144 static int nop_detach(struct ifinfo *ifinfo)
    145 {
    146 	return (0);
    147 }
    148 
    149 static int nop_clear(struct ifinfo *ifinfo)
    150 {
    151 	return (0);
    152 }
    153 
    154 static int nop_enable(struct ifinfo *ifinfo)
    155 {
    156 	return (0);
    157 }
    158 
    159 static int nop_disable(struct ifinfo *ifinfo)
    160 {
    161 	return (0);
    162 }
    163 
    164 static int nop_add_class(struct classinfo *clinfo)
    165 {
    166 	return (0);
    167 }
    168 
    169 static int nop_modify_class(struct classinfo *clinfo, void *arg)
    170 {
    171 	return (0);
    172 }
    173 
    174 static int nop_delete_class(struct classinfo *clinfo)
    175 {
    176 	return (0);
    177 }
    178 
    179 static int nop_add_filter(struct fltrinfo *fltrinfo)
    180 {
    181 	return (0);
    182 }
    183 
    184 static int nop_delete_filter(struct fltrinfo *fltrinfo)
    185 {
    186 	return (0);
    187 }
    188