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 * $DragonFly: src/sys/net/raw_cb.c,v 1.5 2004/03/05 16:57:15 hsu Exp $ 36 */ 37 38 #include <sys/param.h> 39 #include <sys/malloc.h> 40 #include <sys/socket.h> 41 #include <sys/socketvar.h> 42 #include <sys/domain.h> 43 #include <sys/protosw.h> 44 45 #include <net/raw_cb.h> 46 47 /* 48 * Routines to manage the raw protocol control blocks. 49 * 50 * TODO: 51 * hash lookups by protocol family/protocol + address family 52 * take care of unique address problems per AF? 53 * redo address binding to allow wildcards 54 */ 55 56 struct rawcb_list_head rawcb_list; 57 58 static u_long raw_sendspace = RAWSNDQ; 59 static u_long raw_recvspace = RAWRCVQ; 60 61 /* 62 * Allocate a control block and a nominal amount 63 * of buffer space for the socket. 64 */ 65 int 66 raw_attach(struct socket *so, int proto, struct rlimit *rl) 67 { 68 struct rawcb *rp = sotorawcb(so); 69 int error; 70 71 /* 72 * It is assumed that raw_attach is called 73 * after space has been allocated for the 74 * rawcb. 75 */ 76 if (rp == 0) 77 return (ENOBUFS); 78 error = soreserve(so, raw_sendspace, raw_recvspace, rl); 79 if (error) 80 return (error); 81 rp->rcb_socket = so; 82 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; 83 rp->rcb_proto.sp_protocol = proto; 84 LIST_INSERT_HEAD(&rawcb_list, rp, list); 85 return (0); 86 } 87 88 /* 89 * Detach the raw connection block and discard 90 * socket resources. 91 */ 92 void 93 raw_detach(rp) 94 struct rawcb *rp; 95 { 96 struct socket *so = rp->rcb_socket; 97 98 so->so_pcb = 0; 99 sofree(so); 100 LIST_REMOVE(rp, list); 101 #ifdef notdef 102 if (rp->rcb_laddr) 103 m_freem(dtom(rp->rcb_laddr)); 104 rp->rcb_laddr = 0; 105 #endif 106 free((caddr_t)(rp), M_PCB); 107 } 108 109 /* 110 * Disconnect and possibly release resources. 111 */ 112 void 113 raw_disconnect(rp) 114 struct rawcb *rp; 115 { 116 117 #ifdef notdef 118 if (rp->rcb_faddr) 119 m_freem(dtom(rp->rcb_faddr)); 120 rp->rcb_faddr = 0; 121 #endif 122 if (rp->rcb_socket->so_state & SS_NOFDREF) 123 raw_detach(rp); 124 } 125 126 #ifdef notdef 127 #include <sys/mbuf.h> 128 129 int 130 raw_bind(so, nam) 131 struct socket *so; 132 struct mbuf *nam; 133 { 134 struct sockaddr *addr = mtod(nam, struct sockaddr *); 135 struct rawcb *rp; 136 137 if (ifnet == 0) 138 return (EADDRNOTAVAIL); 139 rp = sotorawcb(so); 140 nam = m_copym(nam, 0, M_COPYALL, M_TRYWAIT); 141 rp->rcb_laddr = mtod(nam, struct sockaddr *); 142 return (0); 143 } 144 #endif 145