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/*-
* 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.
* 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
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/domain.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/systm.h>
#include <net/raw_cb.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 mtx rawcb_mtx;
struct rawcb_list_head rawcb_list;
const static u_long raw_sendspace = RAWSNDQ;
const 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;
mtx_lock(&rawcb_mtx);
LIST_INSERT_HEAD(&rawcb_list, rp, list);
mtx_unlock(&rawcb_mtx);
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;
ACCEPT_LOCK();
SOCK_LOCK(so);
so->so_pcb = 0;
sotryfree(so);
mtx_lock(&rawcb_mtx);
LIST_REMOVE(rp, list);
mtx_unlock(&rawcb_mtx);
#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
#include <sys/mbuf.h>
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_TRYWAIT);
rp->rcb_laddr = mtod(nam, struct sockaddr *);
return (0);
}
#endif
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