[unix-history] / sys / net / raw_usrreq.c

/*
 * Copyright (c) 1980, 1986 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.
 *
 *	from: @(#)raw_usrreq.c	7.9 (Berkeley) 6/28/90
 *	$Id: raw_usrreq.c,v 1.4 1993/11/25 01:34:09 wollman Exp $
 */

#include "param.h"
#include "systm.h"
#include "mbuf.h"
#include "domain.h"
#include "protosw.h"
#include "socket.h"
#include "socketvar.h"
#include "errno.h"

#include "if.h"
#include "route.h"
#include "netisr.h"
#include "raw_cb.h"

#include "machine/mtpr.h"

/*
 * Initialize raw connection block q.
 */
void
raw_init()
{

	rawcb.rcb_next = rawcb.rcb_prev = &rawcb;
	rawintrq.ifq_maxlen = IFQ_MAXLEN;
}


/*
 * Raw protocol input routine.  Find the socket
 * associated with the packet(s) and move them over.  If
 * nothing exists for this packet, drop it.
 */
/*
 * Raw protocol interface.
 */
int
raw_input(m0, proto, src, dst)
	struct mbuf *m0;
	register struct sockproto *proto;
	struct sockaddr *src, *dst;
{
	register struct rawcb *rp;
	register struct mbuf *m = m0;
	register int sockets = 0;
	struct socket *last;

	last = 0;
	for (rp = rawcb.rcb_next; rp != &rawcb; rp = rp->rcb_next) {
		if (rp->rcb_proto.sp_family != proto->sp_family)
			continue;
		if (rp->rcb_proto.sp_protocol  &&
		    rp->rcb_proto.sp_protocol != proto->sp_protocol)
			continue;
		/*
		 * We assume the lower level routines have
		 * placed the address in a canonical format
		 * suitable for a structure comparison.
		 *
		 * Note that if the lengths are not the same
		 * the comparison will fail at the first byte.
		 */
#define	equal(a1, a2) \
  (bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
		if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
			continue;
		if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
			continue;
		if (last) {
			struct mbuf *n;
			if (n = m_copy(m, 0, (int)M_COPYALL)) {
				if (sbappendaddr(&last->so_rcv, src,
				    n, (struct mbuf *)0) == 0)
					/* should notify about lost packet */
					m_freem(n);
				else {
					sorwakeup(last);
					sockets++;
				}
			}
		}
		last = rp->rcb_socket;
	}
	if (last) {
		if (sbappendaddr(&last->so_rcv, src,
		    m, (struct mbuf *)0) == 0)
			m_freem(m);
		else {
			sorwakeup(last);
			sockets++;
		}
	} else
		m_freem(m);
	return (sockets);
}

/*ARGSUSED*/
void
raw_ctlinput(cmd, arg)
	int cmd;
	struct sockaddr *arg;
{

	if (cmd < 0 || cmd > PRC_NCMDS)
		return;
	/* INCOMPLETE */
}

/*ARGSUSED*/
int
raw_usrreq(so, req, m, nam, control, dummy)
	struct socket *so;
	int req;
	struct mbuf *m, *nam, *control;
	struct mbuf *dummy;
{
	register struct rawcb *rp = sotorawcb(so);
	register int error = 0;
	int len;

	if (req == PRU_CONTROL)
		return (EOPNOTSUPP);
	if (control && control->m_len) {
		error = EOPNOTSUPP;
		goto release;
	}
	if (rp == 0) {
		error = EINVAL;
		goto release;
	}
	switch (req) {

	/*
	 * Allocate a raw control block and fill in the
	 * necessary info to allow packets to be routed to
	 * the appropriate raw interface routine.
	 */
	case PRU_ATTACH:
		if ((so->so_state & SS_PRIV) == 0) {
			error = EACCES;
			break;
		}
		error = raw_attach(so, (int)nam);
		break;

	/*
	 * Destroy state just before socket deallocation.
	 * Flush data or not depending on the options.
	 */
	case PRU_DETACH:
		if (rp == 0) {
			error = ENOTCONN;
			break;
		}
		raw_detach(rp);
		break;

#ifdef notdef
	/*
	 * If a socket isn't bound to a single address,
	 * the raw input routine will hand it anything
	 * within that protocol family (assuming there's
	 * nothing else around it should go to). 
	 */
	case PRU_CONNECT:
		if (rp->rcb_faddr) {
			error = EISCONN;
			break;
		}
		nam = m_copym(nam, 0, M_COPYALL, M_WAIT);
		rp->rcb_faddr = mtod(nam, struct sockaddr *);
		soisconnected(so);
		break;

	case PRU_BIND:
		if (rp->rcb_laddr) {
			error = EINVAL;			/* XXX */
			break;
		}
		error = raw_bind(so, nam);
		break;
#endif

	case PRU_CONNECT2:
		error = EOPNOTSUPP;
		goto release;

	case PRU_DISCONNECT:
		if (rp->rcb_faddr == 0) {
			error = ENOTCONN;
			break;
		}
		raw_disconnect(rp);
		soisdisconnected(so);
		break;

	/*
	 * Mark the connection as being incapable of further input.
	 */
	case PRU_SHUTDOWN:
		socantsendmore(so);
		break;

	/*
	 * Ship a packet out.  The appropriate raw output
	 * routine handles any massaging necessary.
	 */
	case PRU_SEND:
		if (nam) {
			if (rp->rcb_faddr) {
				error = EISCONN;
				break;
			}
			rp->rcb_faddr = mtod(nam, struct sockaddr *);
		} else if (rp->rcb_faddr == 0) {
			error = ENOTCONN;
			break;
		}
		error = (*so->so_proto->pr_output)(m, so);
		m = NULL;
		if (nam)
			rp->rcb_faddr = 0;
		break;

	case PRU_ABORT:
		raw_disconnect(rp);
		sofree(so);
		soisdisconnected(so);
		break;

	case PRU_SENSE:
		/*
		 * stat: don't bother with a blocksize.
		 */
		return (0);

	/*
	 * Not supported.
	 */
	case PRU_RCVOOB:
	case PRU_RCVD:
		return(EOPNOTSUPP);

	case PRU_LISTEN:
	case PRU_ACCEPT:
	case PRU_SENDOOB:
		error = EOPNOTSUPP;
		break;

	case PRU_SOCKADDR:
		if (rp->rcb_laddr == 0) {
			error = EINVAL;
			break;
		}
		len = rp->rcb_laddr->sa_len;
		bcopy((caddr_t)rp->rcb_laddr, mtod(nam, caddr_t), (unsigned)len);
		nam->m_len = len;
		break;

	case PRU_PEERADDR:
		if (rp->rcb_faddr == 0) {
			error = ENOTCONN;
			break;
		}
		len = rp->rcb_faddr->sa_len;
		bcopy((caddr_t)rp->rcb_faddr, mtod(nam, caddr_t), (unsigned)len);
		nam->m_len = len;
		break;

	default:
		panic("raw_usrreq");
	}
release:
	if (m != NULL)
		m_freem(m);
	return (error);
}
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1980, 1986 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*
70c5ff60	33	* from: @(#)raw_usrreq.c 7.9 (Berkeley) 6/28/90
fde1aeb2	34	* $Id: raw_usrreq.c,v 1.4 1993/11/25 01:34:09 wollman Exp $
15637ed4 RG	35	*/
	36
	37	#include "param.h"
dd18dc33	38	#include "systm.h"
15637ed4 RG	39	#include "mbuf.h"
	40	#include "domain.h"
	41	#include "protosw.h"
	42	#include "socket.h"
	43	#include "socketvar.h"
	44	#include "errno.h"
	45
	46	#include "if.h"
	47	#include "route.h"
	48	#include "netisr.h"
	49	#include "raw_cb.h"
	50
	51	#include "machine/mtpr.h"
	52
	53	/*
	54	* Initialize raw connection block q.
	55	*/
4c45483e	56	void
15637ed4 RG	57	raw_init()
	58	{
	59
	60	rawcb.rcb_next = rawcb.rcb_prev = &rawcb;
	61	rawintrq.ifq_maxlen = IFQ_MAXLEN;
	62	}
	63
	64
	65	/*
	66	* Raw protocol input routine. Find the socket
	67	* associated with the packet(s) and move them over. If
	68	* nothing exists for this packet, drop it.
	69	*/
	70	/*
	71	* Raw protocol interface.
	72	*/
4c45483e	73	int
15637ed4 RG	74	raw_input(m0, proto, src, dst)
	75	struct mbuf *m0;
	76	register struct sockproto *proto;
	77	struct sockaddr src, dst;
	78	{
	79	register struct rawcb *rp;
	80	register struct mbuf *m = m0;
	81	register int sockets = 0;
	82	struct socket *last;
	83
	84	last = 0;
	85	for (rp = rawcb.rcb_next; rp != &rawcb; rp = rp->rcb_next) {
	86	if (rp->rcb_proto.sp_family != proto->sp_family)
	87	continue;
	88	if (rp->rcb_proto.sp_protocol &&
	89	rp->rcb_proto.sp_protocol != proto->sp_protocol)
	90	continue;
	91	/*
	92	* We assume the lower level routines have
	93	* placed the address in a canonical format
	94	* suitable for a structure comparison.
	95	*
	96	* Note that if the lengths are not the same
	97	* the comparison will fail at the first byte.
	98	*/
	99	#define equal(a1, a2) \
	100	(bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
	101	if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
	102	continue;
	103	if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
	104	continue;
	105	if (last) {
	106	struct mbuf *n;
	107	if (n = m_copy(m, 0, (int)M_COPYALL)) {
	108	if (sbappendaddr(&last->so_rcv, src,
	109	n, (struct mbuf *)0) == 0)
	110	/* should notify about lost packet */
	111	m_freem(n);
	112	else {
	113	sorwakeup(last);
	114	sockets++;
	115	}
	116	}
	117	}
	118	last = rp->rcb_socket;
	119	}
	120	if (last) {
	121	if (sbappendaddr(&last->so_rcv, src,
	122	m, (struct mbuf *)0) == 0)
	123	m_freem(m);
	124	else {
	125	sorwakeup(last);
	126	sockets++;
	127	}
	128	} else
	129	m_freem(m);
	130	return (sockets);
	131	}
	132
	133	/ARGSUSED/
4c45483e	134	void
15637ed4 RG	135	raw_ctlinput(cmd, arg)
	136	int cmd;
	137	struct sockaddr *arg;
	138	{
	139
	140	if (cmd < 0 \|\| cmd > PRC_NCMDS)
	141	return;
	142	/* INCOMPLETE */
	143	}
	144
	145	/ARGSUSED/
4c45483e	146	int
fde1aeb2	147	raw_usrreq(so, req, m, nam, control, dummy)
15637ed4 RG	148	struct socket *so;
	149	int req;
	150	struct mbuf m, nam, *control;
fde1aeb2	151	struct mbuf *dummy;
15637ed4 RG	152	{
	153	register struct rawcb *rp = sotorawcb(so);
	154	register int error = 0;
	155	int len;
	156
	157	if (req == PRU_CONTROL)
	158	return (EOPNOTSUPP);
	159	if (control && control->m_len) {
	160	error = EOPNOTSUPP;
	161	goto release;
	162	}
	163	if (rp == 0) {
	164	error = EINVAL;
	165	goto release;
	166	}
	167	switch (req) {
	168
	169	/*
	170	* Allocate a raw control block and fill in the
	171	* necessary info to allow packets to be routed to
	172	* the appropriate raw interface routine.
	173	*/
	174	case PRU_ATTACH:
	175	if ((so->so_state & SS_PRIV) == 0) {
	176	error = EACCES;
	177	break;
	178	}
	179	error = raw_attach(so, (int)nam);
	180	break;
	181
	182	/*
	183	* Destroy state just before socket deallocation.
	184	* Flush data or not depending on the options.
	185	*/
	186	case PRU_DETACH:
	187	if (rp == 0) {
	188	error = ENOTCONN;
	189	break;
	190	}
	191	raw_detach(rp);
	192	break;
	193
	194	#ifdef notdef
	195	/*
	196	* If a socket isn't bound to a single address,
	197	* the raw input routine will hand it anything
	198	* within that protocol family (assuming there's
	199	* nothing else around it should go to).
	200	*/
	201	case PRU_CONNECT:
	202	if (rp->rcb_faddr) {
	203	error = EISCONN;
	204	break;
	205	}
	206	nam = m_copym(nam, 0, M_COPYALL, M_WAIT);
	207	rp->rcb_faddr = mtod(nam, struct sockaddr *);
	208	soisconnected(so);
	209	break;
	210
	211	case PRU_BIND:
	212	if (rp->rcb_laddr) {
	213	error = EINVAL; /* XXX */
	214	break;
	215	}
216	error = raw_bind(so, nam);
217	break;
218	#endif
219
220	case PRU_CONNECT2:
221	error = EOPNOTSUPP;
222	goto release;
223
224	case PRU_DISCONNECT:
225	if (rp->rcb_faddr == 0) {
226	error = ENOTCONN;
227	break;
228	}
229	raw_disconnect(rp);
230	soisdisconnected(so);
231	break;
232
233	/*
234	* Mark the connection as being incapable of further input.
235	*/
236	case PRU_SHUTDOWN:
237	socantsendmore(so);
238	break;
239
240	/*
241	* Ship a packet out. The appropriate raw output
242	* routine handles any massaging necessary.
243	*/
244	case PRU_SEND:
245	if (nam) {
246	if (rp->rcb_faddr) {
247	error = EISCONN;
248	break;
249	}
250	rp->rcb_faddr = mtod(nam, struct sockaddr *);
251	} else if (rp->rcb_faddr == 0) {
252	error = ENOTCONN;
253	break;
254	}
255	error = (*so->so_proto->pr_output)(m, so);
256	m = NULL;
257	if (nam)
258	rp->rcb_faddr = 0;
259	break;
260
261	case PRU_ABORT:
262	raw_disconnect(rp);
263	sofree(so);
264	soisdisconnected(so);
265	break;
266
267	case PRU_SENSE:
268	/*
269	* stat: don't bother with a blocksize.
270	*/
271	return (0);
272
273	/*
274	* Not supported.
275	*/
276	case PRU_RCVOOB:
277	case PRU_RCVD:
278	return(EOPNOTSUPP);
279
280	case PRU_LISTEN:
281	case PRU_ACCEPT:
282	case PRU_SENDOOB:
283	error = EOPNOTSUPP;
284	break;
285
286	case PRU_SOCKADDR:
287	if (rp->rcb_laddr == 0) {
288	error = EINVAL;
289	break;
290	}
291	len = rp->rcb_laddr->sa_len;
292	bcopy((caddr_t)rp->rcb_laddr, mtod(nam, caddr_t), (unsigned)len);
293	nam->m_len = len;
294	break;
295
296	case PRU_PEERADDR:
297	if (rp->rcb_faddr == 0) {
298	error = ENOTCONN;
299	break;
300	}
301	len = rp->rcb_faddr->sa_len;
302	bcopy((caddr_t)rp->rcb_faddr, mtod(nam, caddr_t), (unsigned)len);
303	nam->m_len = len;
304	break;
305
306	default:
307	panic("raw_usrreq");
308	}
309	release:
310	if (m != NULL)
311	m_freem(m);
312	return (error);
313	}
314