31c436a2a9
block from the global raw socket list. Submitted by: Roselyn Lee <rosel at verniernetworks dot com> MFC after: 1 week
152 lines
3.9 KiB
C
152 lines
3.9 KiB
C
/*-
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* Copyright (c) 1980, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)raw_cb.c 8.1 (Berkeley) 6/10/93
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/domain.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/systm.h>
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#include <net/raw_cb.h>
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/*
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* Routines to manage the raw protocol control blocks.
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*
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* TODO:
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* hash lookups by protocol family/protocol + address family
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* take care of unique address problems per AF?
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* redo address binding to allow wildcards
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*/
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struct mtx rawcb_mtx;
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struct rawcb_list_head rawcb_list;
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const static u_long raw_sendspace = RAWSNDQ;
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const static u_long raw_recvspace = RAWRCVQ;
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/*
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* Allocate a control block and a nominal amount
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* of buffer space for the socket.
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*/
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int
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raw_attach(so, proto)
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register struct socket *so;
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int proto;
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{
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register struct rawcb *rp = sotorawcb(so);
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int error;
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/*
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* It is assumed that raw_attach is called
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* after space has been allocated for the
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* rawcb.
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*/
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if (rp == 0)
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return (ENOBUFS);
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error = soreserve(so, raw_sendspace, raw_recvspace);
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if (error)
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return (error);
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rp->rcb_socket = so;
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rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family;
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rp->rcb_proto.sp_protocol = proto;
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mtx_lock(&rawcb_mtx);
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LIST_INSERT_HEAD(&rawcb_list, rp, list);
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mtx_unlock(&rawcb_mtx);
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return (0);
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}
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/*
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* Detach the raw connection block and discard
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* socket resources.
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*/
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void
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raw_detach(rp)
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register struct rawcb *rp;
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{
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struct socket *so = rp->rcb_socket;
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ACCEPT_LOCK();
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SOCK_LOCK(so);
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so->so_pcb = 0;
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sotryfree(so);
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mtx_lock(&rawcb_mtx);
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LIST_REMOVE(rp, list);
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mtx_unlock(&rawcb_mtx);
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#ifdef notdef
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if (rp->rcb_laddr)
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m_freem(dtom(rp->rcb_laddr));
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rp->rcb_laddr = 0;
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#endif
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free((caddr_t)(rp), M_PCB);
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}
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/*
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* Disconnect and possibly release resources.
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*/
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void
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raw_disconnect(rp)
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struct rawcb *rp;
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{
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#ifdef notdef
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if (rp->rcb_faddr)
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m_freem(dtom(rp->rcb_faddr));
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rp->rcb_faddr = 0;
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#endif
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if (rp->rcb_socket->so_state & SS_NOFDREF)
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raw_detach(rp);
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}
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#ifdef notdef
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#include <sys/mbuf.h>
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int
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raw_bind(so, nam)
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register struct socket *so;
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struct mbuf *nam;
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{
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struct sockaddr *addr = mtod(nam, struct sockaddr *);
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register struct rawcb *rp;
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if (ifnet == 0)
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return (EADDRNOTAVAIL);
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rp = sotorawcb(so);
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nam = m_copym(nam, 0, M_COPYALL, M_TRYWAIT);
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rp->rcb_laddr = mtod(nam, struct sockaddr *);
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return (0);
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}
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#endif
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