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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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/sysmacros.h>
#include <sys/strsubr.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/modctl.h>
#include <sys/cmn_err.h>
#include <netinet/sctp.h>
#include <fs/sockfs/sockcommon.h>
#include "socksctp.h"
struct sonode *socksctp_create(struct sockparams *, int, int, int,
int, int, int *, cred_t *);
void socksctp_destroy(struct sonode *);
static int socksctp_constructor(void *, void *, int);
static void socksctp_destructor(void *, void *);
static __smod_priv_t sosctp_priv = {
socksctp_create,
socksctp_destroy,
NULL
};
static smod_reg_t sinfo = {
SOCKMOD_VERSION,
"socksctp",
SOCK_UC_VERSION,
SOCK_DC_VERSION,
NULL,
&sosctp_priv
};
kmem_cache_t *sosctp_assoccache;
static kmem_cache_t *sosctp_sockcache;
/*
* Module linkage information for the kernel.
*/
static struct modlsockmod modlsockmod = {
&mod_sockmodops, "SCTP socket module", &sinfo
};
static struct modlinkage modlinkage = {
MODREV_1,
&modlsockmod,
NULL
};
static int
socksctp_init(void)
{
sosctp_sockcache = kmem_cache_create("sctpsock",
sizeof (struct sctp_sonode), 0, socksctp_constructor,
socksctp_destructor, NULL, NULL, NULL, 0);
sosctp_assoccache = kmem_cache_create("sctp_assoc",
sizeof (struct sctp_soassoc), 0, NULL, NULL, NULL, NULL, NULL, 0);
return (0);
}
static void
socksctp_fini(void)
{
kmem_cache_destroy(sosctp_sockcache);
kmem_cache_destroy(sosctp_assoccache);
}
/*ARGSUSED*/
static int
socksctp_constructor(void *buf, void *cdrarg, int kmflags)
{
struct sctp_sonode *ss = buf;
struct sonode *so = &ss->ss_so;
ss->ss_type = SOSCTP_SOCKET;
return (sonode_constructor((void *)so, cdrarg, kmflags));
}
/*ARGSUSED*/
static void
socksctp_destructor(void *buf, void *cdrarg)
{
struct sctp_sonode *ss = buf;
struct sonode *so = &ss->ss_so;
sonode_destructor((void *)so, cdrarg);
}
/*
* Creates a sctp socket data structure.
*/
/* ARGSUSED */
struct sonode *
socksctp_create(struct sockparams *sp, int family, int type, int protocol,
int version, int sflags, int *errorp, cred_t *cr)
{
struct sctp_sonode *ss;
struct sonode *so;
int kmflags = (sflags & SOCKET_NOSLEEP) ? KM_NOSLEEP : KM_SLEEP;
if (version == SOV_STREAM) {
*errorp = EINVAL;
return (NULL);
}
/*
* We only support two types of SCTP socket. Let sotpi_create()
* handle all other cases, such as raw socket.
*/
if (!(family == AF_INET || family == AF_INET6) ||
!(type == SOCK_STREAM || type == SOCK_SEQPACKET)) {
*errorp = EINVAL;
return (NULL);
}
ss = kmem_cache_alloc(sosctp_sockcache, kmflags);
if (ss == NULL) {
*errorp = ENOMEM;
return (NULL);
}
so = &ss->ss_so;
ss->ss_maxassoc = 0;
ss->ss_assoccnt = 0;
ss->ss_assocs = NULL;
if (type == SOCK_STREAM) {
sonode_init(so, sp, family, type, protocol,
&sosctp_sonodeops);
} else {
sonode_init(so, sp, family, type, protocol,
&sosctp_seq_sonodeops);
ASSERT(type == SOCK_SEQPACKET);
mutex_enter(&so->so_lock);
(void) sosctp_aid_grow(ss, 1, kmflags);
mutex_exit(&so->so_lock);
}
if (version == SOV_DEFAULT) {
version = so_default_version;
}
so->so_version = (short)version;
dprint(2, ("sosctp_create: %p domain %d type %d\n", (void *)so, family,
type));
/*
* set the default values to be INFPSZ
* if a protocol desires it can change the value later
*/
so->so_proto_props.sopp_rxhiwat = SOCKET_RECVHIWATER;
so->so_proto_props.sopp_rxlowat = SOCKET_RECVLOWATER;
so->so_proto_props.sopp_maxpsz = INFPSZ;
so->so_proto_props.sopp_maxblk = INFPSZ;
return (so);
}
/*
* Free SCTP socket data structure.
*/
void
socksctp_destroy(struct sonode *so)
{
struct sctp_sonode *ss;
ASSERT((so->so_type == SOCK_STREAM || so->so_type == SOCK_SEQPACKET) &&
so->so_protocol == IPPROTO_SCTP);
sosctp_fini(so, CRED());
ss = SOTOSSO(so);
kmem_cache_free(sosctp_sockcache, ss);
}
int
_init(void)
{
int error = 0;
(void) socksctp_init();
if ((error = mod_install(&modlinkage)) != 0)
socksctp_fini();
return (error);
}
int
_fini(void)
{
int error = 0;
if ((error = mod_remove(&modlinkage)) == 0)
socksctp_fini();
return (error);
}
int
_info(struct modinfo *modinfop)
{
return (mod_info(&modlinkage, modinfop));
}
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