1 /* $NetBSD: raw_cb.c,v 1.14 2003/08/07 16:32:56 agc 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)raw_cb.c 8.1 (Berkeley) 6/10/93 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: raw_cb.c,v 1.14 2003/08/07 16:32:56 agc Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/mbuf.h> 40 #include <sys/socket.h> 41 #include <sys/socketvar.h> 42 #include <sys/domain.h> 43 #include <sys/protosw.h> 44 #include <sys/errno.h> 45 46 #include <net/if.h> 47 #include <net/route.h> 48 #include <net/raw_cb.h> 49 #include <netinet/in.h> 50 51 /* 52 * Routines to manage the raw protocol control blocks. 53 * 54 * TODO: 55 * hash lookups by protocol family/protocol + address family 56 * take care of unique address problems per AF? 57 * redo address binding to allow wildcards 58 */ 59 60 struct rawcbhead rawcb = LIST_HEAD_INITIALIZER(rawcb); 61 62 u_long raw_sendspace = RAWSNDQ; 63 u_long raw_recvspace = RAWRCVQ; 64 65 /* 66 * Allocate a control block and a nominal amount 67 * of buffer space for the socket. 68 */ 69 int 70 raw_attach(so, proto) 71 struct socket *so; 72 int proto; 73 { 74 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)) != 0) 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 LIST_INSERT_HEAD(&rawcb, rp, rcb_list); 90 return (0); 91 } 92 93 /* 94 * Detach the raw connection block and discard 95 * socket resources. 96 */ 97 void 98 raw_detach(rp) 99 struct rawcb *rp; 100 { 101 struct socket *so = rp->rcb_socket; 102 103 so->so_pcb = 0; 104 sofree(so); 105 LIST_REMOVE(rp, rcb_list); 106 #ifdef notdef 107 if (rp->rcb_laddr) 108 m_freem(dtom(rp->rcb_laddr)); 109 rp->rcb_laddr = 0; 110 #endif 111 free((caddr_t)rp, M_PCB); 112 } 113 114 /* 115 * Disconnect and possibly release resources. 116 */ 117 void 118 raw_disconnect(rp) 119 struct rawcb *rp; 120 { 121 122 #ifdef notdef 123 if (rp->rcb_faddr) 124 m_freem(dtom(rp->rcb_faddr)); 125 rp->rcb_faddr = 0; 126 #endif 127 if (rp->rcb_socket->so_state & SS_NOFDREF) 128 raw_detach(rp); 129 } 130