1/* 2 * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * Copyright (c) 1980, 1986, 1993 30 * The Regents of the University of California. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by the University of 43 * California, Berkeley and its contributors. 44 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)raw_cb.c 8.1 (Berkeley) 6/10/93 61 */ 62 63#include <sys/param.h> 64#include <sys/malloc.h> 65#include <sys/socket.h> 66#include <sys/socketvar.h> 67#include <sys/domain.h> 68#include <sys/protosw.h> 69#include <kern/locks.h> 70 71#include <net/raw_cb.h> 72 73/* 74 * Routines to manage the raw protocol control blocks. 75 * 76 * TODO: 77 * hash lookups by protocol family/protocol + address family 78 * take care of unique address problems per AF? 79 * redo address binding to allow wildcards 80 */ 81 82struct rawcb_list_head rawcb_list; 83 84static uint32_t raw_sendspace = RAWSNDQ; 85static uint32_t raw_recvspace = RAWRCVQ; 86extern lck_mtx_t *raw_mtx; /*### global raw cb mutex for now */ 87 88/* 89 * Allocate a control block and a nominal amount 90 * of buffer space for the socket. 91 */ 92int 93raw_attach(struct socket *so, int proto) 94{ 95 struct rawcb *rp = sotorawcb(so); 96 int error; 97 98 /* 99 * It is assumed that raw_attach is called 100 * after space has been allocated for the 101 * rawcb. 102 */ 103 if (rp == 0) 104 return (ENOBUFS); 105 error = soreserve(so, raw_sendspace, raw_recvspace); 106 if (error) 107 return (error); 108 rp->rcb_socket = so; 109 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; 110 rp->rcb_proto.sp_protocol = proto; 111 lck_mtx_lock(raw_mtx); 112 LIST_INSERT_HEAD(&rawcb_list, rp, list); 113 lck_mtx_unlock(raw_mtx); 114 return (0); 115} 116 117/* 118 * Detach the raw connection block and discard 119 * socket resources. 120 */ 121void 122raw_detach(struct rawcb *rp) 123{ 124 struct socket *so = rp->rcb_socket; 125 126 so->so_pcb = 0; 127 so->so_flags |= SOF_PCBCLEARING; 128 sofree(so); 129 if (!lck_mtx_try_lock(raw_mtx)) { 130 socket_unlock(so, 0); 131 lck_mtx_lock(raw_mtx); 132 socket_lock(so, 0); 133 } 134 LIST_REMOVE(rp, list); 135 lck_mtx_unlock(raw_mtx); 136#ifdef notdef 137 if (rp->rcb_laddr) 138 m_freem(dtom(rp->rcb_laddr)); 139 rp->rcb_laddr = 0; 140#endif 141 rp->rcb_socket = NULL; 142 FREE((caddr_t)(rp), M_PCB); 143} 144 145/* 146 * Disconnect and possibly release resources. 147 */ 148void 149raw_disconnect(struct rawcb *rp) 150{ 151#ifdef notdef 152 if (rp->rcb_faddr) 153 m_freem(dtom(rp->rcb_faddr)); 154 rp->rcb_faddr = 0; 155#endif 156 if (rp->rcb_socket->so_state & SS_NOFDREF) 157 raw_detach(rp); 158} 159 160#ifdef notdef 161#include <sys/mbuf.h> 162 163int 164raw_bind(struct socket *so, struct mbuf *nam) 165{ 166 struct sockaddr *addr = mtod(nam, struct sockaddr *); 167 struct rawcb *rp; 168 169 if (ifnet == 0) 170 return (EADDRNOTAVAIL); 171 rp = sotorawcb(so); 172 nam = m_copym(nam, 0, M_COPYALL, M_WAITOK); 173 if (nam == NULL) 174 return ENOBUFS; 175 rp->rcb_laddr = mtod(nam, struct sockaddr *); 176 return (0); 177} 178#endif 179