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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright 2013 Nexenta Systems, Inc. All rights reserved.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley 4.3 BSD
* under license from the Regents of the University of California.
*/
#include <sys/types.h>
#include <sys/sysmacros.h>
#include <sys/param.h>
#include <sys/cmn_err.h>
#include <sys/debug.h>
#include <rpc/types.h>
#include <netinet/in.h>
#include <rpc/auth.h>
#include <rpc/clnt.h>
#include <sys/tiuser.h>
#include <sys/t_kuser.h>
#include <rpc/svc.h>
#include <sys/file.h>
#include <sys/user.h>
#include <sys/stream.h>
#include <sys/strsubr.h>
#include <sys/stropts.h>
#include <sys/tihdr.h>
#include <sys/timod.h>
#include <sys/sunddi.h>
#include <sys/fcntl.h>
#include <sys/errno.h>
/*
* Create server-side kernel RPC `master' transport handle
*
* This is public interface for creation of a server RPC transport handle
* for a given file descriptor. This function is called from nfs_svc()
* and lm_svc().
*
* PSARC 2003/523 Contract Private Interface
* svc_tli_kcreate
* Changes must be reviewed by Solaris File Sharing
* Changes must be communicated to contract-2003-523@sun.com
*
* Arguments:
* - fp - connection end point
* - max_msgsize - max receive size
* - netid - netid
* - addrmask - address mask
* - nxprt - filled with outgoing transport handle
* - sct - callout table to be registered with this transport handle
* - closeproc - optional pointer to a closeproc for this transport or NULL
* - id - RPC pool id (currently only NFS_SVCPOOL_ID or LM_SVCPOOL_ID)
* - hotstream - very MT-hot flag (TRUE for NFS, FALSE for Lock Manager)
*
* Description:
* - make sure rpcmod is on the stream
* - call T_INFO_REQ to get the transport service type info
* - call transport-type specific `create' routine (svc_clts_kcreate(),
* svc_cots_kcreate()) to create and initialize transport for the stream
* - call svc_xprt_register() to register the transport handle into the
* service thread pool
* - initialize transport-type independent fields (synchronization objects,
* thread counts, callout table, closeproc)
* - optionally, for CLTS transports tell streams framework that the
* stream can be MT-hot
* - call transport-type specific `start' function to tell rpcmod that
* the transport is ready to receive.
*/
int
svc_tli_kcreate(
struct file *fp, /* connection end point */
uint_t max_msgsize, /* max receive size */
char *netid,
struct netbuf *addrmask,
SVCMASTERXPRT **nxprt,
SVC_CALLOUT_TABLE *sct,
void (*closeproc)(const SVCMASTERXPRT *),
int id, /* thread pool */
bool_t hotstream)
{
queue_t *wq;
SVCMASTERXPRT *xprt = NULL; /* service handle */
int retval;
struct strioctl strioc;
struct T_info_ack tinfo;
int error;
void **vp;
major_t udpmaj;
RPCLOG(16, "svc_tli_kcreate: on file %p\n", (void *)fp);
if (fp == NULL || nxprt == NULL)
return (EINVAL);
if (fp->f_vnode->v_stream == NULL)
return (ENOSTR);
/*
* Make sure that an RPC interface module is on the stream.
*/
wq = fp->f_vnode->v_stream->sd_wrq;
while ((wq = wq->q_next) != NULL) {
if (strcmp(wq->q_qinfo->qi_minfo->mi_idname, "rpcmod") == 0)
break;
}
if (!wq) {
RPCLOG0(1, "svc_tli_kcreate: no RPC module on stream\n");
return (EINVAL);
}
/*
* Find out what type of transport this is.
*/
strioc.ic_cmd = TI_GETINFO;
strioc.ic_timout = -1;
strioc.ic_len = sizeof (tinfo);
strioc.ic_dp = (char *)&tinfo;
tinfo.PRIM_type = T_INFO_REQ;
error = strioctl(fp->f_vnode, I_STR, (intptr_t)&strioc, 0, K_TO_K,
CRED(), &retval);
if (error || retval) {
RPCLOG(1, "svc_tli_kcreate: getinfo ioctl: %d\n", error);
return (error);
}
/*
* Call transport-type specific `create' function.
* It will allocate transport structure.
*/
switch (tinfo.SERV_type) {
case T_CLTS:
error = svc_clts_kcreate(fp, max_msgsize, &tinfo, &xprt);
break;
case T_COTS:
case T_COTS_ORD:
error = svc_cots_kcreate(fp, max_msgsize, &tinfo, &xprt);
break;
default:
RPCLOG(1, "svc_tli_kcreate: Bad service type %d\n",
tinfo.SERV_type);
error = EINVAL;
}
if (error)
return (error);
/*
* Initialize transport-type independent fields.
*/
xprt->xp_req_head = (mblk_t *)0;
xprt->xp_req_tail = (mblk_t *)0;
xprt->xp_full = FALSE;
xprt->xp_enable = FALSE;
xprt->xp_reqs = 0;
xprt->xp_size = 0;
mutex_init(&xprt->xp_req_lock, NULL, MUTEX_DEFAULT, NULL);
mutex_init(&xprt->xp_thread_lock, NULL, MUTEX_DEFAULT, NULL);
xprt->xp_type = tinfo.SERV_type;
xprt->xp_threads = 0;
xprt->xp_detached_threads = 0;
xprt->xp_fp = fp;
xprt->xp_wq = wq;
xprt->xp_closeproc = closeproc;
xprt->xp_sct = sct;
xprt->xp_netid = NULL;
if (netid != NULL) {
xprt->xp_netid = kmem_alloc(strlen(netid) + 1, KM_SLEEP);
(void) strcpy(xprt->xp_netid, netid);
}
xprt->xp_addrmask.len = 0;
xprt->xp_addrmask.maxlen = 0;
xprt->xp_addrmask.buf = NULL;
if (addrmask != NULL) {
xprt->xp_addrmask = *addrmask;
}
/*
* Register this transport handle after all fields have been
* initialized. The registration can fail only if we try to register
* with a non-existent pool (ENOENT) or a closing pool (EBUSY).
*/
if (error = svc_xprt_register(xprt, id)) {
/* if there was an addrmask, caller will delete it */
xprt->xp_addrmask.maxlen = 0;
SVC_DESTROY(xprt);
cmn_err(CE_WARN, "svc_tli_kcreate: xprt_register failed");
return (error);
}
/*
* Set the private RPC cell in the module's data.
*/
vp = (void **)wq->q_ptr;
vp[0] = xprt;
/*
* Inform the streams framework that the stream may be very MT hot.
*/
if (hotstream && tinfo.SERV_type == T_CLTS) {
udpmaj = ddi_name_to_major("udp");
if (udpmaj != (major_t)-1 &&
getmajor(fp->f_vnode->v_rdev) == udpmaj)
create_putlocks(wq, 1);
}
*nxprt = xprt;
/*
* Tell rpcmod that the transport is fully initialized and
* ready to process requests.
*/
SVC_START(xprt);
return (0);
}
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