raw_cb.c revision 1.2
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 * from: @(#)raw_cb.c 7.11 (Berkeley) 6/28/90 34 * $Id: raw_cb.c,v 1.2 1993/05/18 18:19:59 cgd Exp $ 35 */ 36 37#include "param.h" 38#include "systm.h" 39#include "select.h" 40#include "mbuf.h" 41#include "socket.h" 42#include "socketvar.h" 43#include "domain.h" 44#include "protosw.h" 45#include "errno.h" 46 47#include "if.h" 48#include "route.h" 49#include "raw_cb.h" 50#include "../netinet/in.h" 51 52#include "machine/mtpr.h" 53 54/* 55 * Routines to manage the raw protocol control blocks. 56 * 57 * TODO: 58 * hash lookups by protocol family/protocol + address family 59 * take care of unique address problems per AF? 60 * redo address binding to allow wildcards 61 */ 62 63u_long raw_sendspace = RAWSNDQ; 64u_long raw_recvspace = RAWRCVQ; 65 66/* 67 * Allocate a control block and a nominal amount 68 * of buffer space for the socket. 69 */ 70raw_attach(so, proto) 71 register struct socket *so; 72 int proto; 73{ 74 register struct rawcb *rp = sotorawcb(so); 75 int error; 76 77 /* 78 * It is assumed that raw_attach is called 79 * after space has been allocated for the 80 * rawcb. 81 */ 82 if (rp == 0) 83 return (ENOBUFS); 84 if (error = soreserve(so, raw_sendspace, raw_recvspace)) 85 return (error); 86 rp->rcb_socket = so; 87 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; 88 rp->rcb_proto.sp_protocol = proto; 89 insque(rp, &rawcb); 90 return (0); 91} 92 93/* 94 * Detach the raw connection block and discard 95 * socket resources. 96 */ 97raw_detach(rp) 98 register struct rawcb *rp; 99{ 100 struct socket *so = rp->rcb_socket; 101 102 so->so_pcb = 0; 103 sofree(so); 104 remque(rp); 105#ifdef notdef 106 if (rp->rcb_laddr) 107 m_freem(dtom(rp->rcb_laddr)); 108 rp->rcb_laddr = 0; 109#endif 110 free((caddr_t)(rp), M_PCB); 111} 112 113/* 114 * Disconnect and possibly release resources. 115 */ 116raw_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 130raw_bind(so, nam) 131 register struct socket *so; 132 struct mbuf *nam; 133{ 134 struct sockaddr *addr = mtod(nam, struct sockaddr *); 135 register struct rawcb *rp; 136 137 if (ifnet == 0) 138 return (EADDRNOTAVAIL); 139 rp = sotorawcb(so); 140 nam = m_copym(nam, 0, M_COPYALL, M_WAITOK); 141 rp->rcb_laddr = mtod(nam, struct sockaddr *); 142 return (0); 143} 144#endif 145