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 * from: @(#)raw_cb.c 8.1 (Berkeley) 6/10/93 34 * $Id: raw_cb.c,v 1.6 1994/05/13 06:03:07 mycroft Exp $ 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/mbuf.h> 40 #include <sys/socket.h> 41 #include <sys/socketvar.h> 42 #include <sys/domain.h> 43 #include <sys/protosw.h> 44 #include <sys/errno.h> 45 46 #include <net/if.h> 47 #include <net/route.h> 48 #include <net/raw_cb.h> 49 #include <netinet/in.h> 50 51 /* 52 * Routines to manage the raw protocol control blocks. 53 * 54 * TODO: 55 * hash lookups by protocol family/protocol + address family 56 * take care of unique address problems per AF? 57 * redo address binding to allow wildcards 58 */ 59 60 u_long raw_sendspace = RAWSNDQ; 61 u_long raw_recvspace = RAWRCVQ; 62 63 /* 64 * Allocate a control block and a nominal amount 65 * of buffer space for the socket. 66 */ 67 int 68 raw_attach(so, proto) 69 register struct socket *so; 70 int proto; 71 { 72 register struct rawcb *rp = sotorawcb(so); 73 int error; 74 75 /* 76 * It is assumed that raw_attach is called 77 * after space has been allocated for the 78 * rawcb. 79 */ 80 if (rp == 0) 81 return (ENOBUFS); 82 if (error = soreserve(so, raw_sendspace, raw_recvspace)) 83 return (error); 84 rp->rcb_socket = so; 85 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; 86 rp->rcb_proto.sp_protocol = proto; 87 insque(rp, &rawcb); 88 return (0); 89 } 90 91 /* 92 * Detach the raw connection block and discard 93 * socket resources. 94 */ 95 void 96 raw_detach(rp) 97 register struct rawcb *rp; 98 { 99 struct socket *so = rp->rcb_socket; 100 101 so->so_pcb = 0; 102 sofree(so); 103 remque(rp); 104 #ifdef notdef 105 if (rp->rcb_laddr) 106 m_freem(dtom(rp->rcb_laddr)); 107 rp->rcb_laddr = 0; 108 #endif 109 free((caddr_t)(rp), M_PCB); 110 } 111 112 /* 113 * Disconnect and possibly release resources. 114 */ 115 void 116 raw_disconnect(rp) 117 struct rawcb *rp; 118 { 119 120 #ifdef notdef 121 if (rp->rcb_faddr) 122 m_freem(dtom(rp->rcb_faddr)); 123 rp->rcb_faddr = 0; 124 #endif 125 if (rp->rcb_socket->so_state & SS_NOFDREF) 126 raw_detach(rp); 127 } 128 129 #ifdef notdef 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