raw_cb.c revision 1.1
1/* 2 * Copyright (c) 1980, 1986 Regents of the University of California. 3 * 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 7.11 (Berkeley) 6/28/90 34 */ 35 36#include "param.h" 37#include "systm.h" 38#include "mbuf.h" 39#include "socket.h" 40#include "socketvar.h" 41#include "domain.h" 42#include "protosw.h" 43#include "errno.h" 44 45#include "if.h" 46#include "route.h" 47#include "raw_cb.h" 48#include "../netinet/in.h" 49 50#include "machine/mtpr.h" 51 52/* 53 * Routines to manage the raw protocol control blocks. 54 * 55 * TODO: 56 * hash lookups by protocol family/protocol + address family 57 * take care of unique address problems per AF? 58 * redo address binding to allow wildcards 59 */ 60 61u_long raw_sendspace = RAWSNDQ; 62u_long raw_recvspace = RAWRCVQ; 63 64/* 65 * Allocate a control block and a nominal amount 66 * of buffer space for the socket. 67 */ 68raw_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 */ 95raw_detach(rp) 96 register struct rawcb *rp; 97{ 98 struct socket *so = rp->rcb_socket; 99 100 so->so_pcb = 0; 101 sofree(so); 102 remque(rp); 103#ifdef notdef 104 if (rp->rcb_laddr) 105 m_freem(dtom(rp->rcb_laddr)); 106 rp->rcb_laddr = 0; 107#endif 108 free((caddr_t)(rp), M_PCB); 109} 110 111/* 112 * Disconnect and possibly release resources. 113 */ 114raw_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 128raw_bind(so, nam) 129 register struct socket *so; 130 struct mbuf *nam; 131{ 132 struct sockaddr *addr = mtod(nam, struct sockaddr *); 133 register struct rawcb *rp; 134 135 if (ifnet == 0) 136 return (EADDRNOTAVAIL); 137 rp = sotorawcb(so); 138 nam = m_copym(nam, 0, M_COPYALL, M_WAITOK); 139 rp->rcb_laddr = mtod(nam, struct sockaddr *); 140 return (0); 141} 142#endif 143