[39e6e65a] | 1 | /* |
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| 2 | * Copyright (c) 1980, 1986, 1993 |
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| 3 | * The Regents of the University of California. All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * 1. Redistributions of source code must retain the above copyright |
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| 9 | * notice, this list of conditions and the following disclaimer. |
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer in the |
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| 12 | * documentation and/or other materials provided with the distribution. |
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| 13 | * 4. Neither the name of the University nor the names of its contributors |
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| 14 | * may be used to endorse or promote products derived from this software |
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| 15 | * without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 27 | * SUCH DAMAGE. |
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| 28 | * |
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| 29 | * @(#)raw_cb.c 8.1 (Berkeley) 6/10/93 |
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[e6a59370] | 30 | * $FreeBSD: src/sys/net/raw_cb.c,v 1.34 2006/06/02 08:27:15 rwatson Exp $ |
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| 31 | */ |
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| 32 | |
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| 33 | /* |
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[39e6e65a] | 34 | * $Id$ |
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| 35 | */ |
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| 36 | |
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| 37 | #include <sys/param.h> |
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[c301570] | 38 | #include <rtems/bsd/sys/queue.h> |
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[39e6e65a] | 39 | #include <sys/systm.h> |
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| 40 | #include <sys/mbuf.h> |
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| 41 | #include <sys/socket.h> |
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| 42 | #include <sys/socketvar.h> |
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| 43 | #include <sys/domain.h> |
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| 44 | #include <sys/protosw.h> |
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| 45 | #include <sys/errno.h> |
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| 46 | |
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| 47 | #include <net/if.h> |
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| 48 | #include <net/route.h> |
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| 49 | #include <net/raw_cb.h> |
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| 50 | #include <netinet/in.h> |
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| 51 | |
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[e6a59370] | 52 | #ifdef __rtems__ |
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| 53 | #define mtx_lock(x) /* UNUSED */ |
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| 54 | #define mtx_unlock(x) /* UNUSED */ |
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| 55 | #define KASSERT(x,y) /* UNUSED */ |
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| 56 | #endif |
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| 57 | |
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[39e6e65a] | 58 | /* |
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| 59 | * Routines to manage the raw protocol control blocks. |
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| 60 | * |
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| 61 | * TODO: |
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| 62 | * hash lookups by protocol family/protocol + address family |
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| 63 | * take care of unique address problems per AF? |
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| 64 | * redo address binding to allow wildcards |
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| 65 | */ |
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| 66 | |
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[e6a59370] | 67 | struct rawcb_list_head rawcb_list; |
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[39e6e65a] | 68 | static u_long raw_sendspace = RAWSNDQ; |
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| 69 | static u_long raw_recvspace = RAWRCVQ; |
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| 70 | |
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| 71 | /* |
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| 72 | * Allocate a control block and a nominal amount |
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| 73 | * of buffer space for the socket. |
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| 74 | */ |
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| 75 | int |
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[42e10fa2] | 76 | raw_attach(struct socket *so, int proto) |
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[39e6e65a] | 77 | { |
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| 78 | register struct rawcb *rp = sotorawcb(so); |
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| 79 | int error; |
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| 80 | |
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| 81 | /* |
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| 82 | * It is assumed that raw_attach is called |
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| 83 | * after space has been allocated for the |
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| 84 | * rawcb. |
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| 85 | */ |
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| 86 | if (rp == 0) |
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| 87 | return (ENOBUFS); |
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| 88 | error = soreserve(so, raw_sendspace, raw_recvspace); |
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| 89 | if (error) |
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| 90 | return (error); |
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| 91 | rp->rcb_socket = so; |
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| 92 | rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; |
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| 93 | rp->rcb_proto.sp_protocol = proto; |
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[e6a59370] | 94 | mtx_lock(&rawcb_mtx); |
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| 95 | LIST_INSERT_HEAD(&rawcb_list, rp, list); |
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| 96 | mtx_unlock(&rawcb_mtx); |
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[39e6e65a] | 97 | return (0); |
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| 98 | } |
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| 99 | |
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| 100 | /* |
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| 101 | * Detach the raw connection block and discard |
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| 102 | * socket resources. |
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| 103 | */ |
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| 104 | void |
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[42e10fa2] | 105 | raw_detach(struct rawcb *rp) |
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[39e6e65a] | 106 | { |
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| 107 | struct socket *so = rp->rcb_socket; |
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| 108 | |
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[e6a59370] | 109 | KASSERT(so->so_pcb == rp, ("raw_detach: so_pcb != rp")); |
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| 110 | |
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| 111 | so->so_pcb = NULL; |
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| 112 | mtx_lock(&rawcb_mtx); |
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| 113 | LIST_REMOVE(rp, list); |
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| 114 | mtx_unlock(&rawcb_mtx); |
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[39e6e65a] | 115 | #ifdef notdef |
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| 116 | if (rp->rcb_laddr) |
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| 117 | m_freem(dtom(rp->rcb_laddr)); |
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| 118 | rp->rcb_laddr = 0; |
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| 119 | #endif |
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| 120 | free((caddr_t)(rp), M_PCB); |
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| 121 | } |
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| 122 | |
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| 123 | /* |
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[e6a59370] | 124 | * Disconnect raw socket. |
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[39e6e65a] | 125 | */ |
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| 126 | void |
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[42e10fa2] | 127 | raw_disconnect(struct rawcb *rp) |
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[39e6e65a] | 128 | { |
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| 129 | |
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| 130 | #ifdef notdef |
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| 131 | if (rp->rcb_faddr) |
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| 132 | m_freem(dtom(rp->rcb_faddr)); |
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| 133 | rp->rcb_faddr = 0; |
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| 134 | #endif |
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| 135 | } |
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| 136 | |
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| 137 | #ifdef notdef |
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| 138 | int |
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[42e10fa2] | 139 | raw_bind(struct socket *so, struct mbuf *nam) |
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[39e6e65a] | 140 | { |
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| 141 | struct sockaddr *addr = mtod(nam, struct sockaddr *); |
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| 142 | register struct rawcb *rp; |
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| 143 | |
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| 144 | if (ifnet == 0) |
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| 145 | return (EADDRNOTAVAIL); |
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| 146 | rp = sotorawcb(so); |
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[e6a59370] | 147 | nam = m_copym(nam, 0, M_COPYALL, M_TRYWAIT); |
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[39e6e65a] | 148 | rp->rcb_laddr = mtod(nam, struct sockaddr *); |
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| 149 | return (0); |
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| 150 | } |
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| 151 | #endif |
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