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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/types.h>
#include <sys/conf.h>
#include <sys/modctl.h>
#include <inet/common.h>
/*
* Dummy streams module that is used by ICMP, UDP, and TCP by setting
* INETMODSTRTAB to dummymodinfo
*
* It's reason for existance is so that mibopen() that I_PUSH icmp, udp, and
* tcp can continue to push modules with those names, even though all the
* MIB information comes from IP.
*/
static int dummy_wput(queue_t *, mblk_t *);
static int dummy_modclose(queue_t *, int, cred_t *);
static int dummy_modopen(queue_t *q, dev_t *devp, int flag,
int sflag, cred_t *credp);
/*
* This is common code for the tcp, udp, and icmp streams module which is
* an empty STREAMS module provided for compatibility for mibopen()
* code which I_PUSH modules with those names.
*/
struct module_info dummy_mod_info = {
5799, "dummymod", 1, INFPSZ, 65536, 1024
};
static struct qinit dummyrmodinit = {
dummy_wput, NULL, dummy_modopen, dummy_modclose, NULL,
&dummy_mod_info
};
static struct qinit dummywmodinit = {
dummy_wput, NULL, NULL, NULL, NULL, &dummy_mod_info
};
struct streamtab dummymodinfo = {
&dummyrmodinit, &dummywmodinit
};
/* ARGSUSED */
static int
dummy_wput(queue_t *q, mblk_t *m)
{
putnext(q, m);
return (0);
}
static int
dummy_modclose(queue_t *q, int flags __unused, cred_t *credp __unused)
{
qprocsoff(q);
return (0);
}
/* ARGSUSED */
static int
dummy_modopen(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *credp)
{
/* If the stream is already open, return immediately. */
if (q->q_ptr != NULL)
return (0);
/* If this is not a push of dummy as a module, fail. */
if (sflag != MODOPEN)
return (EINVAL);
qprocson(q);
return (0);
}
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