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/* $OpenBSD: raw_cb.c,v 1.13 2017/11/02 14:01:18 florian Exp $ */
/* $NetBSD: raw_cb.c,v 1.9 1996/02/13 22:00:39 christos Exp $ */
/*
* 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. 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
*/
#include <sys/param.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/raw_cb.h>
#include <netinet/in.h>
/*
* Routines to manage the raw protocol control blocks.
*/
u_long raw_sendspace = RAWSNDQ;
u_long raw_recvspace = RAWRCVQ;
/*
* Allocate a control block and a nominal amount
* of buffer space for the socket.
*/
int
raw_attach(struct socket *so, int proto)
{
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 == NULL)
return (ENOBUFS);
if ((error = soreserve(so, raw_sendspace, raw_recvspace)) != 0)
return (error);
rp->rcb_socket = so;
rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family;
rp->rcb_proto.sp_protocol = proto;
return (0);
}
int
raw_detach(struct socket *so)
{
struct rawcb *rp = sotorawcb(so);
soassertlocked(so);
if (rp == NULL)
return (EINVAL);
raw_do_detach(rp);
return (0);
}
/*
* Detach the raw connection block and discard
* socket resources.
*/
void
raw_do_detach(struct rawcb *rp)
{
struct socket *so = rp->rcb_socket;
so->so_pcb = 0;
sofree(so);
free((caddr_t)(rp), M_PCB, 0);
}
/*
* Disconnect and possibly release resources.
*/
void
raw_disconnect(struct rawcb *rp)
{
if (rp->rcb_socket->so_state & SS_NOFDREF)
raw_do_detach(rp);
}
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