1 /* $NetBSD: raw_cb.c,v 1.12 2001/11/12 23:49:47 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)raw_cb.c 8.1 (Berkeley) 6/10/93 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: raw_cb.c,v 1.12 2001/11/12 23:49:47 lukem Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/mbuf.h> 44 #include <sys/socket.h> 45 #include <sys/socketvar.h> 46 #include <sys/domain.h> 47 #include <sys/protosw.h> 48 #include <sys/errno.h> 49 50 #include <net/if.h> 51 #include <net/route.h> 52 #include <net/raw_cb.h> 53 #include <netinet/in.h> 54 55 /* 56 * Routines to manage the raw protocol control blocks. 57 * 58 * TODO: 59 * hash lookups by protocol family/protocol + address family 60 * take care of unique address problems per AF? 61 * redo address binding to allow wildcards 62 */ 63 64 u_long raw_sendspace = RAWSNDQ; 65 u_long raw_recvspace = RAWRCVQ; 66 67 /* 68 * Allocate a control block and a nominal amount 69 * of buffer space for the socket. 70 */ 71 int 72 raw_attach(so, proto) 73 struct socket *so; 74 int proto; 75 { 76 struct rawcb *rp = sotorawcb(so); 77 int error; 78 79 /* 80 * It is assumed that raw_attach is called 81 * after space has been allocated for the 82 * rawcb. 83 */ 84 if (rp == 0) 85 return (ENOBUFS); 86 if ((error = soreserve(so, raw_sendspace, raw_recvspace)) != 0) 87 return (error); 88 rp->rcb_socket = so; 89 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; 90 rp->rcb_proto.sp_protocol = proto; 91 LIST_INSERT_HEAD(&rawcb, rp, rcb_list); 92 return (0); 93 } 94 95 /* 96 * Detach the raw connection block and discard 97 * socket resources. 98 */ 99 void 100 raw_detach(rp) 101 struct rawcb *rp; 102 { 103 struct socket *so = rp->rcb_socket; 104 105 so->so_pcb = 0; 106 sofree(so); 107 LIST_REMOVE(rp, rcb_list); 108 #ifdef notdef 109 if (rp->rcb_laddr) 110 m_freem(dtom(rp->rcb_laddr)); 111 rp->rcb_laddr = 0; 112 #endif 113 free((caddr_t)rp, M_PCB); 114 } 115 116 /* 117 * Disconnect and possibly release resources. 118 */ 119 void 120 raw_disconnect(rp) 121 struct rawcb *rp; 122 { 123 124 #ifdef notdef 125 if (rp->rcb_faddr) 126 m_freem(dtom(rp->rcb_faddr)); 127 rp->rcb_faddr = 0; 128 #endif 129 if (rp->rcb_socket->so_state & SS_NOFDREF) 130 raw_detach(rp); 131 } 132