0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning/*
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * CDDL HEADER START
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning *
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * The contents of this file are subject to the terms of the
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * Common Development and Distribution License (the "License").
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * You may not use this file except in compliance with the License.
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning *
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * or http://www.opensolaris.org/os/licensing.
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * See the License for the specific language governing permissions
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * and limitations under the License.
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning *
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * When distributing Covered Code, include this CDDL HEADER in each
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * If applicable, add the following below this CDDL HEADER, with the
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * fields enclosed by brackets "[]" replaced with your own identifying
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * information: Portions Copyright [yyyy] [name of copyright owner]
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning *
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * CDDL HEADER END
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning/*
bfcb55b84554e024ad218fb452e863d9f2acd644Rao Shoaib * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * Use is subject to license terms.
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/types.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <inet/ip.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <inet/ip_impl.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <inet/ipclassifier.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <inet/proto_set.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/stream.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/strsubr.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/strsun.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/cmn_err.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/t_kuser.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/tihdr.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/pathname.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/sockio.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/vmem.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/disp.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningvoid ip_helper_wput(queue_t *q, mblk_t *mp);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstatic int ip_helper_stream_close(queue_t *, int);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstatic struct module_info ip_helper_stream_info = {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning 0, "iphelper", IP_MOD_MINPSZ, IP_MOD_MAXPSZ, IP_MOD_HIWAT, IP_MOD_LOWAT
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning};
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstatic struct qinit ip_helper_stream_rinit = {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning NULL, NULL, NULL, ip_helper_stream_close, NULL,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning &ip_helper_stream_info, NULL
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning};
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstatic struct qinit ip_helper_stream_winit = {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning (pfi_t)ip_helper_wput, (pfi_t)ip_wsrv, NULL, NULL, NULL,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning &ip_helper_stream_info, NULL, NULL, NULL, STRUIOT_NONE
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning};
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning/*
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * set the q_ptr of the 'q' to the conn_t pointer passed in
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstatic void
bfcb55b84554e024ad218fb452e863d9f2acd644Rao Shoaibip_helper_share_conn(queue_t *q, mblk_t *mp, cred_t *crp)
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning{
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark conn_t *connp = *((conn_t **)mp->b_cont->b_rptr);
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark
bfcb55b84554e024ad218fb452e863d9f2acd644Rao Shoaib /*
bfcb55b84554e024ad218fb452e863d9f2acd644Rao Shoaib * This operation is allowed only on helper streams with kcred
bfcb55b84554e024ad218fb452e863d9f2acd644Rao Shoaib */
bfcb55b84554e024ad218fb452e863d9f2acd644Rao Shoaib
bfcb55b84554e024ad218fb452e863d9f2acd644Rao Shoaib if (kcred != crp || msgdsize(mp->b_cont) != sizeof (void *)) {
bfcb55b84554e024ad218fb452e863d9f2acd644Rao Shoaib miocnak(q, mp, 0, EINVAL);
bfcb55b84554e024ad218fb452e863d9f2acd644Rao Shoaib return;
bfcb55b84554e024ad218fb452e863d9f2acd644Rao Shoaib }
bfcb55b84554e024ad218fb452e863d9f2acd644Rao Shoaib
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark connp->conn_helper_info->iphs_minfo = q->q_ptr;
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark connp->conn_helper_info->iphs_rq = RD(q);
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark connp->conn_helper_info->iphs_wq = WR(q);
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark WR(q)->q_ptr = RD(q)->q_ptr = (void *)connp;
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark connp->conn_rq = RD(q);
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark connp->conn_wq = WR(q);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning miocack(q, mp, 0, 0);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning}
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningvoid
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningip_helper_wput(queue_t *q, mblk_t *mp)
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning{
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning struct iocblk *iocp = (struct iocblk *)mp->b_rptr;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning if (DB_TYPE(mp) == M_IOCTL &&
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning iocp->ioc_cmd == SIOCSQPTR) {
bfcb55b84554e024ad218fb452e863d9f2acd644Rao Shoaib ip_helper_share_conn(q, mp, iocp->ioc_cr);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning } else {
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark /* We only handle ioctl related messages here */
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark ASSERT(DB_TYPE(mp) != M_DATA);
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark ip_wput_nondata(q, mp);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning }
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning}
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark/* ARGSUSED3 */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningint
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningip_helper_stream_setup(queue_t *q, dev_t *devp, int flag, int sflag,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning cred_t *credp, boolean_t isv6)
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning{
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning major_t maj;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ip_helper_minfo_t *ip_minfop;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ASSERT((flag & ~(FKLYR)) == IP_HELPER_STR);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ASSERT(RD(q) == q);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark ip_minfop = kmem_alloc(sizeof (ip_helper_minfo_t), KM_SLEEP);
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark ASSERT(ip_minfop != NULL);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ip_minfop->ip_minfo_dev = 0;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ip_minfop->ip_minfo_arena = NULL;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning /*
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * Clone the device, allocate minor device number
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning if (ip_minor_arena_la != NULL)
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ip_minfop->ip_minfo_dev = inet_minor_alloc(ip_minor_arena_la);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning if (ip_minfop->ip_minfo_dev == 0) {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning /*
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * numbers in the large arena are exhausted
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * Try small arena.
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * Or this is a 32 bit system, 32 bit systems do not have
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * ip_minor_arena_la
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ip_minfop->ip_minfo_dev = inet_minor_alloc(ip_minor_arena_sa);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning if (ip_minfop->ip_minfo_dev == 0) {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning return (EBUSY);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning }
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ip_minfop->ip_minfo_arena = ip_minor_arena_sa;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning } else {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ip_minfop->ip_minfo_arena = ip_minor_arena_la;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning }
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ASSERT(ip_minfop->ip_minfo_dev != 0);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ASSERT(ip_minfop->ip_minfo_arena != NULL);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning RD(q)->q_ptr = WR(q)->q_ptr = ip_minfop;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning maj = getemajor(*devp);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning *devp = makedevice(maj, (ulong_t)(ip_minfop->ip_minfo_dev));
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning q->q_qinfo = &ip_helper_stream_rinit;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning WR(q)->q_qinfo = &ip_helper_stream_winit;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning qprocson(q);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning return (0);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning}
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark/* ARGSUSED1 */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstatic int
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningip_helper_stream_close(queue_t *q, int flag)
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning{
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ip_helper_minfo_t *ip_minfop;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning qprocsoff(q);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ip_minfop = (q)->q_ptr;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning inet_minor_free(ip_minfop->ip_minfo_arena,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ip_minfop->ip_minfo_dev);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning kmem_free(ip_minfop, sizeof (ip_helper_minfo_t));
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning RD(q)->q_ptr = NULL;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning WR(q)->q_ptr = NULL;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning return (0);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning}
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning/*
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * Public interface for creating an IP stream with shared conn_t
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * Handles multiple callers in parallel by using conn_lock.
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * Note that we allocate the helper stream without any locks, which means
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * we might need to free it if we had two threads doing this concurrently
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * for the conn_t.
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningint
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningip_create_helper_stream(conn_t *connp, ldi_ident_t li)
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning{
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark ip_helper_stream_info_t *helper;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning int error;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning int ret;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning ASSERT(!servicing_interrupt());
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark if (connp->conn_helper_info != NULL) {
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark /* Already allocated */
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark return (0);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning }
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark error = 0;
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark helper = kmem_alloc(sizeof (ip_helper_stream_info_t), KM_SLEEP);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning /*
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * open ip device via the layered interface.
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * pass in kcred as some threads do not have the
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * priviledge to open /dev/ip and the check in
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * secpolicy_spec_open() will fail the open
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning */
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark error = ldi_open_by_name((connp->conn_family == AF_INET6 ? DEV_IP6 :
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark DEV_IP), IP_HELPER_STR, kcred, &helper->iphs_handle, li);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning if (error != 0) {
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark kmem_free(helper, sizeof (ip_helper_stream_info_t));
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning return (error);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning }
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark /* Make sure we are the only one */
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark mutex_enter(&connp->conn_lock);
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark if (connp->conn_helper_info != NULL) {
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark /* Some other thread won - discard this stream */
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark mutex_exit(&connp->conn_lock);
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark (void) ldi_close(helper->iphs_handle, 0, kcred);
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark kmem_free(helper, sizeof (ip_helper_stream_info_t));
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark return (0);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning }
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark connp->conn_helper_info = helper;
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark /*
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * Share connp with the helper stream. We hold conn_lock across this
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * operation.
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark */
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark error = ldi_ioctl(helper->iphs_handle, SIOCSQPTR, (intptr_t)connp,
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark FKIOCTL, kcred, &ret);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark if (error != 0) {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning /*
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * Passing in a zero flag indicates that an error
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * occured and stream was not shared
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning */
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark (void) ldi_close(helper->iphs_handle, 0, kcred);
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark kmem_free(helper, sizeof (ip_helper_stream_info_t));
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark connp->conn_helper_info = NULL;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning }
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark mutex_exit(&connp->conn_lock);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning return (error);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning}
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning/*
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * Public interface for freeing IP helper stream
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * Caller must ensure no concurrent use of the conn_t, which is normally
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark * done by calling this from the close routine when the conn_t is quiesced.
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning */
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmarkvoid
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmarkip_free_helper_stream(conn_t *connp)
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning{
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark ASSERT(!servicing_interrupt());
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark if (connp->conn_helper_info == NULL)
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark return;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark ASSERT(connp->conn_helper_info->iphs_handle != NULL);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark connp->conn_helper_info->iphs_rq->q_ptr =
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark connp->conn_helper_info->iphs_wq->q_ptr =
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark connp->conn_helper_info->iphs_minfo;
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark (void) ldi_close(connp->conn_helper_info->iphs_handle,
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark IP_HELPER_STR, kcred);
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark kmem_free(connp->conn_helper_info, sizeof (ip_helper_stream_info_t));
bd670b35a010421b6e1a5536c34453a827007c81Erik Nordmark connp->conn_helper_info = NULL;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning}