inet/sockmods/sockmod_sdp.c

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/*
dd49f125507979bb2ab505a8daf2a46d1be27051Anders Persson * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/sysmacros.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/strsubr.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/socket.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/socketvar.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/modctl.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/cmn_err.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <sys/vfs.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <inet/sdp_itf.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include <fs/sockfs/sockcommon.h>
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning#include "socksdp.h"
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstruct sonode *socksdp_create(struct sockparams *, int, int, int,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    int, int, int *, cred_t *);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstatic void socksdp_destroy(struct sonode *);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstatic __smod_priv_t sosdp_priv = {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    socksdp_create,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    socksdp_destroy,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    NULL
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning};
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstatic smod_reg_t sinfo = {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    SOCKMOD_VERSION,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    "socksdp",
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    SOCK_UC_VERSION,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    SOCK_DC_VERSION,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    NULL,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    &sosdp_priv
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning};
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning/*
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * Module linkage information for the kernel
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstatic struct modlsockmod modlsockmod = {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    &mod_sockmodops, "SDP socket module", &sinfo
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning};
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstatic struct modlinkage modlinkage = {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    MODREV_1,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    &modlsockmod,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    NULL
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning};
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning/*
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning * Creates a sdp socket data structure.
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning/* ARGSUSED */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstruct sonode *
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningsocksdp_create(struct sockparams *sp, int family, int type, int protocol,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning            int version, int sflags, int *errorp, cred_t *cr)
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning{
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    struct sonode *so;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    int kmflags = (sflags & SOCKET_NOSLEEP) ? KM_NOSLEEP : KM_SLEEP;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    dprint(4, ("Inside sosdp_create: domain:%d proto:%d type:%d",
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning        family, protocol, type));
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    *errorp = 0;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    if (is_system_labeled()) {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning        *errorp = EOPNOTSUPP;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning        return (NULL);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    }
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    if (version == SOV_STREAM) {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning        *errorp = EINVAL;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning        return (NULL);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    }
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    /*
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning     * We only support one type of SDP socket.  Let sotpi_create()
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning     * handle all other cases, such as raw socket.
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning     */
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    if (!(family == AF_INET || family == AF_INET6) ||
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning        !(type == SOCK_STREAM)) {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning        *errorp = EINVAL;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning        return (NULL);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    }
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    so = kmem_cache_alloc(socket_cache, kmflags);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    if (so == NULL) {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning        *errorp = ENOMEM;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning        return (NULL);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    }
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    sonode_init(so, sp, family, type, protocol, &sosdp_sonodeops);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    so->so_pollev |= SO_POLLEV_ALWAYS;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    dprint(2, ("sosdp_create: %p domain %d type %d\n", (void *)so, family,
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning        type));
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    if (version == SOV_DEFAULT) {
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning        version = so_default_version;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    }
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    so->so_version = (short)version;
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
d496d3f8834a66aac9da86c94e941d41fdeff23bErik Nordmark    /*
d496d3f8834a66aac9da86c94e941d41fdeff23bErik Nordmark     * set the default values to be INFPSZ
d496d3f8834a66aac9da86c94e941d41fdeff23bErik Nordmark     * if a protocol desires it can change the value later
d496d3f8834a66aac9da86c94e941d41fdeff23bErik Nordmark     */
d496d3f8834a66aac9da86c94e941d41fdeff23bErik Nordmark    so->so_proto_props.sopp_rxhiwat = SOCKET_RECVHIWATER;
d496d3f8834a66aac9da86c94e941d41fdeff23bErik Nordmark    so->so_proto_props.sopp_rxlowat = SOCKET_RECVLOWATER;
d496d3f8834a66aac9da86c94e941d41fdeff23bErik Nordmark    so->so_proto_props.sopp_maxpsz = INFPSZ;
d496d3f8834a66aac9da86c94e941d41fdeff23bErik Nordmark    so->so_proto_props.sopp_maxblk = INFPSZ;
d496d3f8834a66aac9da86c94e941d41fdeff23bErik Nordmark
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    return (so);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning}
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningstatic void
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningsocksdp_destroy(struct sonode *so)
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning{
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    ASSERT(so->so_ops == &sosdp_sonodeops);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    sosdp_fini(so, CRED());
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    kmem_cache_free(socket_cache, so);
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning}
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningint
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning_init(void)
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning{
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    return (mod_install(&modlinkage));
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning}
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningint
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning_fini(void)
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning{
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    return (mod_remove(&modlinkage));
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning}
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangningint
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning_info(struct modinfo *modinfop)
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning{
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning    return (mod_info(&modlinkage, modinfop));
0f1702c5201310f0529cd5abb77652e5e9b241b6Yu Xiangning}