Subversion Repositories openrisc_2011-10-31

/*

 * Copyright (c) 1980, 1986, 1993

 *      The Regents of the University of California.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *      This product includes software developed by the University of

 *      California, Berkeley and its contributors.

 * 4. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 *      @(#)raw_cb.c    8.1 (Berkeley) 6/10/93

 * $Id: raw_cb.c,v 1.2 2001-09-27 12:01:54 chris Exp $

 */

#include <sys/param.h>

#include <sys/queue.h>

#include <sys/systm.h>

#include <sys/mbuf.h>

#include <sys/socket.h>

#include <sys/socketvar.h>

#include <sys/domain.h>

#include <sys/protosw.h>

#include <sys/errno.h>

#include <net/if.h>

#include <net/route.h>

#include <net/raw_cb.h>

#include <netinet/in.h>

/*

 * Routines to manage the raw protocol control blocks.

 *

 * TODO:

 *      hash lookups by protocol family/protocol + address family

 *      take care of unique address problems per AF?

 *      redo address binding to allow wildcards

 */

struct rawcb rawcb;

static u_long   raw_sendspace = RAWSNDQ;

static u_long   raw_recvspace = RAWRCVQ;

/*

 * Allocate a control block and a nominal amount

 * of buffer space for the socket.

 */

int

raw_attach(so, proto)

        register struct socket *so;

        int proto;

{

        register struct rawcb *rp = sotorawcb(so);

        int error;

        /*

         * It is assumed that raw_attach is called

         * after space has been allocated for the

         * rawcb.

         */

        if (rp == 0)

                return (ENOBUFS);

        error = soreserve(so, raw_sendspace, raw_recvspace);

        if (error)

                return (error);

        rp->rcb_socket = so;

        rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family;

        rp->rcb_proto.sp_protocol = proto;

        insque(rp, &rawcb);

        return (0);

}

/*

 * Detach the raw connection block and discard

 * socket resources.

 */

void

raw_detach(rp)

        register struct rawcb *rp;

{

        struct socket *so = rp->rcb_socket;

        so->so_pcb = 0;

        sofree(so);

        remque(rp);

#ifdef notdef

        if (rp->rcb_laddr)

                m_freem(dtom(rp->rcb_laddr));

        rp->rcb_laddr = 0;

#endif

        free((caddr_t)(rp), M_PCB);

}

/*

 * Disconnect and possibly release resources.

 */

void

raw_disconnect(rp)

        struct rawcb *rp;

{

#ifdef notdef

        if (rp->rcb_faddr)

                m_freem(dtom(rp->rcb_faddr));

        rp->rcb_faddr = 0;

#endif

        if (rp->rcb_socket->so_state & SS_NOFDREF)

                raw_detach(rp);

}

#ifdef notdef

int

raw_bind(so, nam)

        register struct socket *so;

        struct mbuf *nam;

{

        struct sockaddr *addr = mtod(nam, struct sockaddr *);

        register struct rawcb *rp;

        if (ifnet == 0)

                return (EADDRNOTAVAIL);

        rp = sotorawcb(so);

        nam = m_copym(nam, 0, M_COPYALL, M_WAITOK);

        rp->rcb_laddr = mtod(nam, struct sockaddr *);

        return (0);

}

#endif