| | 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 | * $FreeBSD: src/sys/net/raw_cb.c,v 1.16 1999/08/28 00:48:27 peter Exp $ |
| | 35 | * $DragonFly: src/sys/net/raw_cb.c,v 1.9 2004/12/21 02:54:14 hsu Exp $ |
| | 36 | */ |
| | 37 | |
| | 38 | #include <sys/param.h> |
| | 39 | #include <sys/malloc.h> |
| | 40 | #include <sys/socket.h> |
| | 41 | #include <sys/socketvar.h> |
| | 42 | #include <sys/domain.h> |
| | 43 | #include <sys/protosw.h> |
| | 44 | |
| | 45 | #include <net/raw_cb.h> |
| | 46 | |
| | 47 | /* |
| | 48 | * Routines to manage the raw protocol control blocks. |
| | 49 | * |
| | 50 | * TODO: |
| | 51 | * hash lookups by protocol family/protocol + address family |
| | 52 | * take care of unique address problems per AF? |
| | 53 | * redo address binding to allow wildcards |
| | 54 | */ |
| | 55 | |
| | 56 | struct rawcb_list_head rawcb_list; |
| | 57 | |
| | 58 | static u_long raw_sendspace = RAWSNDQ; |
| | 59 | static u_long raw_recvspace = RAWRCVQ; |
| | 60 | |
| | 61 | /* |
| | 62 | * Allocate a control block and a nominal amount |
| | 63 | * of buffer space for the socket. |
| | 64 | */ |
| | 65 | int |
| | 66 | raw_attach(struct socket *so, int proto, struct rlimit *rl) |
| | 67 | { |
| | 68 | struct rawcb *rp = sotorawcb(so); |
| | 69 | int error; |
| | 70 | |
| | 71 | /* |
| | 72 | * It is assumed that raw_attach is called |
| | 73 | * after space has been allocated for the |
| | 74 | * rawcb. |
| | 75 | */ |
| | 76 | if (rp == 0) |
| | 77 | return (ENOBUFS); |
| | 78 | error = soreserve(so, raw_sendspace, raw_recvspace, rl); |
| | 79 | if (error) |
| | 80 | return (error); |
| | 81 | rp->rcb_socket = so; |
| | 82 | rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; |
| | 83 | rp->rcb_proto.sp_protocol = proto; |
| | 84 | LIST_INSERT_HEAD(&rawcb_list, rp, list); |
| | 85 | return (0); |
| | 86 | } |
| | 87 | |
| | 88 | /* |
| | 89 | * Detach the raw connection block and discard |
| | 90 | * socket resources. |
| | 91 | */ |
| | 92 | void |
| | 93 | raw_detach(struct rawcb *rp) |
| | 94 | { |
| | 95 | struct socket *so = rp->rcb_socket; |
| | 96 | |
| | 97 | so->so_pcb = 0; |
| | 98 | sofree(so); |
| | 99 | LIST_REMOVE(rp, list); |
| | 100 | free(rp, M_PCB); |
| | 101 | } |
| | 102 | |
| | 103 | /* |
| | 104 | * Disconnect and possibly release resources. |
| | 105 | */ |
| | 106 | void |
| | 107 | raw_disconnect(struct rawcb *rp) |
| | 108 | { |
| | 109 | if (rp->rcb_socket->so_state & SS_NOFDREF) |
| | 110 | raw_detach(rp); |
| | 111 | } |
| | 112 | |
| | 113 | #ifdef notdef |
| | 114 | #include <sys/mbuf.h> |
| | 115 | |
| | 116 | int |
| | 117 | raw_bind(struct socket *so, struct mbuf *nam) |
| | 118 | { |
| | 119 | struct sockaddr *addr = mtod(nam, struct sockaddr *); |
| | 120 | struct rawcb *rp; |
| | 121 | |
| | 122 | if (ifnet == 0) |
| | 123 | return (EADDRNOTAVAIL); |
| | 124 | rp = sotorawcb(so); |
| | 125 | nam = m_copym(nam, 0, M_COPYALL, MB_TRYWAIT); |
| | 126 | rp->rcb_laddr = mtod(nam, struct sockaddr *); |
| | 127 | return (0); |
| | 128 | } |
| | 129 | #endif |
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