1 /* $NetBSD: raw_cb.c,v 1.13 2002/05/12 20:40:12 matt 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 1.13 2002/05/12 20:40:12 matt 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 struct rawcbhead rawcb = LIST_HEAD_INITIALIZER(rawcb); 65 66 u_long raw_sendspace = RAWSNDQ; 67 u_long raw_recvspace = RAWRCVQ; 68 69 /* 70 * Allocate a control block and a nominal amount 71 * of buffer space for the socket. 72 */ 73 int 74 raw_attach(so, proto) 75 struct socket *so; 76 int proto; 77 { 78 struct rawcb *rp = sotorawcb(so); 79 int error; 80 81 /* 82 * It is assumed that raw_attach is called 83 * after space has been allocated for the 84 * rawcb. 85 */ 86 if (rp == 0) 87 return (ENOBUFS); 88 if ((error = soreserve(so, raw_sendspace, raw_recvspace)) != 0) 89 return (error); 90 rp->rcb_socket = so; 91 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; 92 rp->rcb_proto.sp_protocol = proto; 93 LIST_INSERT_HEAD(&rawcb, rp, rcb_list); 94 return (0); 95 } 96 97 /* 98 * Detach the raw connection block and discard 99 * socket resources. 100 */ 101 void 102 raw_detach(rp) 103 struct rawcb *rp; 104 { 105 struct socket *so = rp->rcb_socket; 106 107 so->so_pcb = 0; 108 sofree(so); 109 LIST_REMOVE(rp, rcb_list); 110 #ifdef notdef 111 if (rp->rcb_laddr) 112 m_freem(dtom(rp->rcb_laddr)); 113 rp->rcb_laddr = 0; 114 #endif 115 free((caddr_t)rp, M_PCB); 116 } 117 118 /* 119 * Disconnect and possibly release resources. 120 */ 121 void 122 raw_disconnect(rp) 123 struct rawcb *rp; 124 { 125 126 #ifdef notdef 127 if (rp->rcb_faddr) 128 m_freem(dtom(rp->rcb_faddr)); 129 rp->rcb_faddr = 0; 130 #endif 131 if (rp->rcb_socket->so_state & SS_NOFDREF) 132 raw_detach(rp); 133 } 134