raw_cb.c revision 1542
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 */ 35 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/mbuf.h> 39#include <sys/socket.h> 40#include <sys/socketvar.h> 41#include <sys/domain.h> 42#include <sys/protosw.h> 43#include <sys/errno.h> 44 45#include <net/if.h> 46#include <net/route.h> 47#include <net/raw_cb.h> 48#include <netinet/in.h> 49 50/* 51 * Routines to manage the raw protocol control blocks. 52 * 53 * TODO: 54 * hash lookups by protocol family/protocol + address family 55 * take care of unique address problems per AF? 56 * redo address binding to allow wildcards 57 */ 58 59u_long raw_sendspace = RAWSNDQ; 60u_long raw_recvspace = RAWRCVQ; 61 62/* 63 * Allocate a control block and a nominal amount 64 * of buffer space for the socket. 65 */ 66int 67raw_attach(so, proto) 68 register struct socket *so; 69 int proto; 70{ 71 register struct rawcb *rp = sotorawcb(so); 72 int error; 73 74 /* 75 * It is assumed that raw_attach is called 76 * after space has been allocated for the 77 * rawcb. 78 */ 79 if (rp == 0) 80 return (ENOBUFS); 81 if (error = soreserve(so, raw_sendspace, raw_recvspace)) 82 return (error); 83 rp->rcb_socket = so; 84 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; 85 rp->rcb_proto.sp_protocol = proto; 86 insque(rp, &rawcb); 87 return (0); 88} 89 90/* 91 * Detach the raw connection block and discard 92 * socket resources. 93 */ 94void 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 */ 114void 115raw_disconnect(rp) 116 struct rawcb *rp; 117{ 118 119#ifdef notdef 120 if (rp->rcb_faddr) 121 m_freem(dtom(rp->rcb_faddr)); 122 rp->rcb_faddr = 0; 123#endif 124 if (rp->rcb_socket->so_state & SS_NOFDREF) 125 raw_detach(rp); 126} 127 128#ifdef notdef 129int 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