1 /* 2 * Copyright (c) 1980, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)raw_cb.c 8.1 (Berkeley) 6/10/93 34 * $FreeBSD: src/sys/net/raw_cb.c,v 1.16 1999/08/28 00:48:27 peter Exp $ 35 */ 36 37 #include <sys/param.h> 38 #include <sys/malloc.h> 39 #include <sys/socket.h> 40 #include <sys/socketvar.h> 41 #include <sys/domain.h> 42 #include <sys/protosw.h> 43 44 #include <net/raw_cb.h> 45 46 /* 47 * Routines to manage the raw protocol control blocks. 48 * 49 * TODO: 50 * hash lookups by protocol family/protocol + address family 51 * take care of unique address problems per AF? 52 * redo address binding to allow wildcards 53 */ 54 55 struct rawcb_list_head rawcb_list; 56 57 static u_long raw_sendspace = RAWSNDQ; 58 static u_long raw_recvspace = RAWRCVQ; 59 60 /* 61 * Allocate a control block and a nominal amount 62 * of buffer space for the socket. 63 */ 64 int 65 raw_attach(so, proto) 66 register struct socket *so; 67 int proto; 68 { 69 register struct rawcb *rp = sotorawcb(so); 70 int error; 71 72 /* 73 * It is assumed that raw_attach is called 74 * after space has been allocated for the 75 * rawcb. 76 */ 77 if (rp == 0) 78 return (ENOBUFS); 79 error = soreserve(so, raw_sendspace, raw_recvspace); 80 if (error) 81 return (error); 82 rp->rcb_socket = so; 83 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; 84 rp->rcb_proto.sp_protocol = proto; 85 LIST_INSERT_HEAD(&rawcb_list, rp, list); 86 return (0); 87 } 88 89 /* 90 * Detach the raw connection block and discard 91 * socket resources. 92 */ 93 void 94 raw_detach(rp) 95 register struct rawcb *rp; 96 { 97 struct socket *so = rp->rcb_socket; 98 99 so->so_pcb = 0; 100 sofree(so); 101 LIST_REMOVE(rp, list); 102 #ifdef notdef 103 if (rp->rcb_laddr) 104 m_freem(dtom(rp->rcb_laddr)); 105 rp->rcb_laddr = 0; 106 #endif 107 free((caddr_t)(rp), M_PCB); 108 } 109 110 /* 111 * Disconnect and possibly release resources. 112 */ 113 void 114 raw_disconnect(rp) 115 struct rawcb *rp; 116 { 117 118 #ifdef notdef 119 if (rp->rcb_faddr) 120 m_freem(dtom(rp->rcb_faddr)); 121 rp->rcb_faddr = 0; 122 #endif 123 if (rp->rcb_socket->so_state & SS_NOFDREF) 124 raw_detach(rp); 125 } 126 127 #ifdef notdef 128 #include <sys/mbuf.h> 129 130 int 131 raw_bind(so, nam) 132 register struct socket *so; 133 struct mbuf *nam; 134 { 135 struct sockaddr *addr = mtod(nam, struct sockaddr *); 136 register struct rawcb *rp; 137 138 if (ifnet == 0) 139 return (EADDRNOTAVAIL); 140 rp = sotorawcb(so); 141 nam = m_copym(nam, 0, M_COPYALL, M_WAITOK); 142 rp->rcb_laddr = mtod(nam, struct sockaddr *); 143 return (0); 144 } 145 #endif 146