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qop_dummy.c revision 1.3 
      1 /*	$KAME: qop_dummy.c,v 1.2 2000/10/18 09:15:19 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 #include <net/if.h>
     31 #include <stdio.h>
     32 #include <errno.h>
     33 #include <syslog.h>
     34 
     35 #include <altq/altq.h>
     36 #include "altq_qop.h"
     37 
     38 int null_interface_parser(const char *, int, char **);
     39 int null_class_parser(const char *, const char *, const char *, int, char **);
     40 int qcmd_nop_add_if(const char *);
     41 static int nop_attach(struct ifinfo *);
     42 static int nop_detach(struct ifinfo *);
     43 static int nop_clear(struct ifinfo *);
     44 static int nop_enable(struct ifinfo *);
     45 static int nop_disable(struct ifinfo *);
     46 static int nop_add_class(struct classinfo *);
     47 static int nop_modify_class(struct classinfo *, void *);
     48 static int nop_delete_class(struct classinfo *);
     49 static int nop_add_filter(struct fltrinfo *);
     50 static int nop_delete_filter(struct fltrinfo *);
     51 
     52 struct qdisc_ops nop_qdisc = {
     53 	ALTQT_NONE,
     54 	"nop",
     55 	nop_attach,
     56 	nop_detach,
     57 	nop_clear,
     58 	nop_enable,
     59 	nop_disable,
     60 	nop_add_class,
     61 	nop_modify_class,
     62 	nop_delete_class,
     63 	nop_add_filter,
     64 	nop_delete_filter,
     65 };
     66 
     67 #define EQUAL(s1, s2)	(strcmp((s1), (s2)) == 0)
     68 
     69 /*
     70  * parser interface for null interface
     71  */
     72 int
     73 null_interface_parser(const char *ifname, int argc, char **argv)
     74 {
     75 	u_int  	bandwidth = 0;
     76 	u_int	tbrsize = 0;
     77 
     78 	/*
     79 	 * process options
     80 	 */
     81 	while (argc > 0) {
     82 		if (EQUAL(*argv, "bandwidth")) {
     83 			argc--; argv++;
     84 			if (argc > 0)
     85 				bandwidth = atobps(*argv);
     86 		} else if (EQUAL(*argv, "tbrsize")) {
     87 			argc--; argv++;
     88 			if (argc > 0)
     89 				tbrsize = atobytes(*argv);
     90 		} else {
     91 			LOG(LOG_ERR, 0, "Unknown keyword '%s'\n", argv);
     92 			return (0);
     93 		}
     94 		argc--; argv++;
     95 	}
     96 
     97 	if (bandwidth != 0)
     98 		if (qcmd_tbr_register(ifname, bandwidth, tbrsize) != 0)
     99 			return (0);
    100 
    101 	/*
    102 	 * add a dummy interface since traffic conditioner might need it.
    103 	 */
    104 	if (qcmd_nop_add_if(ifname) != 0)
    105 		return (0);
    106 	return (1);
    107 }
    108 
    109 int
    110 null_class_parser(const char *ifname, const char *class_name,
    111 		  const char *parent_name, int argc, char **argv)
    112 {
    113 	LOG(LOG_ERR, 0,
    114 	    "class cannot be defined without a queueing discipline in %s, line %d\n",
    115 	    altqconfigfile, line_no);
    116 	return (0);
    117 }
    118 
    119 /*
    120  * qcmd api
    121  */
    122 int
    123 qcmd_nop_add_if(const char *ifname)
    124 {
    125 	int error;
    126 
    127 	error = qop_add_if(NULL, ifname, 0, &nop_qdisc, NULL);
    128 	if (error != 0)
    129 		LOG(LOG_ERR, errno, "%s: can't add nop on interface '%s'\n",
    130 		    qoperror(error), ifname);
    131 	return (error);
    132 }
    133 
    134 /*
    135  * qop api
    136  */
    137 static int nop_attach(struct ifinfo *ifinfo)
    138 {
    139 	return (0);
    140 }
    141 
    142 static int nop_detach(struct ifinfo *ifinfo)
    143 {
    144 	return (0);
    145 }
    146 
    147 static int nop_clear(struct ifinfo *ifinfo)
    148 {
    149 	return (0);
    150 }
    151 
    152 static int nop_enable(struct ifinfo *ifinfo)
    153 {
    154 	return (0);
    155 }
    156 
    157 static int nop_disable(struct ifinfo *ifinfo)
    158 {
    159 	return (0);
    160 }
    161 
    162 static int nop_add_class(struct classinfo *clinfo)
    163 {
    164 	return (0);
    165 }
    166 
    167 static int nop_modify_class(struct classinfo *clinfo, void *arg)
    168 {
    169 	return (0);
    170 }
    171 
    172 static int nop_delete_class(struct classinfo *clinfo)
    173 {
    174 	return (0);
    175 }
    176 
    177 static int nop_add_filter(struct fltrinfo *fltrinfo)
    178 {
    179 	return (0);
    180 }
    181 
    182 static int nop_delete_filter(struct fltrinfo *fltrinfo)
    183 {
    184 	return (0);
    185 }
    186