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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.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/stream.h>
#include <sys/strsubr.h>
#include <sys/stropts.h>
#include <sys/strsun.h>
#define _SUN_TPI_VERSION 2
#include <sys/tihdr.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/errno.h>
#include <sys/socket.h>
#include <sys/kmem.h>
#include <sys/random.h>
#include <sys/policy.h>
#include <netinet/in.h>
#include <inet/common.h>
#include <inet/ip.h>
#include <inet/nd.h>
#include <inet/ipclassifier.h>
#include <inet/optcom.h>
#include <inet/sctp_ip.h>
#include "sctp_impl.h"
/*
* We need a stream q for sending packets to IP. This q should
* be set in strplumb() time. Once it is set, it will never
* be removed. Since it is done in strplumb() time, there is
* no need to have a lock on the default q.
*/
static void
sctp_def_q_set(queue_t *q, mblk_t *mp)
{
conn_t *connp = (conn_t *)q->q_ptr;
struct iocblk *iocp = (struct iocblk *)mp->b_rptr;
mblk_t *mp1;
hrtime_t t;
sctp_stack_t *sctps = connp->conn_netstack->
netstack_sctp;
ASSERT(connp != NULL && connp->conn_ulp == IPPROTO_SCTP &&
connp->conn_rq == NULL);
if ((mp1 = mp->b_cont) == NULL) {
iocp->ioc_error = EINVAL;
ip0dbg(("sctp_def_q_set: no file descriptor\n"));
goto done;
}
mutex_enter(&sctps->sctps_g_q_lock);
if (sctps->sctps_g_q != NULL) {
mutex_exit(&sctps->sctps_g_q_lock);
ip0dbg(("sctp_def_q_set: already set\n"));
iocp->ioc_error = EALREADY;
goto done;
}
sctps->sctps_g_q = q;
mutex_exit(&sctps->sctps_g_q_lock);
sctps->sctps_gsctp = (sctp_t *)sctp_create(NULL, NULL, AF_INET6,
SCTP_CAN_BLOCK, NULL, NULL, connp->conn_cred);
mutex_enter(&sctps->sctps_g_q_lock);
if (sctps->sctps_gsctp == NULL) {
sctps->sctps_g_q = NULL;
mutex_exit(&sctps->sctps_g_q_lock);
iocp->ioc_error = ENOMEM;
goto done;
}
mutex_exit(&sctps->sctps_g_q_lock);
ASSERT(sctps->sctps_g_q_ref >= 1);
ASSERT(list_head(&sctps->sctps_g_list) == sctps->sctps_gsctp);
/*
* As a good citizen of using /dev/urandom, add some entropy
* to the random number pool.
*/
t = gethrtime();
(void) random_add_entropy((uint8_t *)&t, sizeof (t), 0);
done:
if (mp1 != NULL) {
freemsg(mp1);
mp->b_cont = NULL;
}
iocp->ioc_count = 0;
mp->b_datap->db_type = M_IOCACK;
qreply(q, mp);
}
/*
* sctp_wput_ioctl is called by sctp_wput_slow to handle all
* M_IOCTL messages.
*/
void
sctp_wput_ioctl(queue_t *q, mblk_t *mp)
{
conn_t *connp = (conn_t *)q->q_ptr;
struct iocblk *iocp;
cred_t *cr;
if (connp == NULL) {
ip0dbg(("sctp_wput_ioctl: null conn\n"));
return;
}
iocp = (struct iocblk *)mp->b_rptr;
cr = DB_CREDDEF(mp, iocp->ioc_cr);
switch (iocp->ioc_cmd) {
case SCTP_IOC_DEFAULT_Q:
/* Wants to be the default wq. */
if (cr != NULL && secpolicy_ip_config(cr, B_FALSE) != 0) {
iocp->ioc_error = EPERM;
goto err_ret;
}
sctp_def_q_set(q, mp);
return;
case ND_SET:
/* sctp_nd_getset() -> nd_getset() does the checking. */
case ND_GET:
if (!sctp_nd_getset(q, mp)) {
break;
}
qreply(q, mp);
return;
default:
iocp->ioc_error = EOPNOTSUPP;
break;
}
err_ret:
iocp->ioc_count = 0;
mp->b_datap->db_type = M_IOCNAK;
qreply(q, mp);
}
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