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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Data Link API - Receive Data
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/stream.h>
#include <sys/stropts.h>
#include <sys/dlpi.h>
#include <dluser.h>
#include <dlhdr.h>
extern struct dl_descriptor *_getdesc();
int
dl_rcv(int fd, char *buff, int *bufflen, struct dl_address *addr)
{
struct dl_descriptor *dl;
struct strbuf ctl, data;
int flags = 0;
if ((dl = _getdesc(fd)) != NULL) {
unsigned char pbuff[sizeof (union DL_primitives)+24];
union DL_primitives *prim = (union DL_primitives *)pbuff;
int len;
unsigned char *ap, *addrp;
if (dl->info.state != DLSTATE_IDLE) {
dl->error = DLUNBOUND;
return (-1);
}
memset(prim, '\0', sizeof (prim));
ctl.maxlen = ctl.len = sizeof (pbuff);
ctl.buf = (char *)prim;
data.maxlen = data.len = *bufflen;
data.buf = buff;
flags = 0;
if (getmsg(fd, &ctl, &data, &flags) < 0) {
dl->error = DLSYSERR;
return (-1);
}
if (ctl.len == 0) {
/* not really supported but ok */
*bufflen = 0;
return (0);
}
switch (prim->dl_primitive) {
case DL_UNITDATA_IND:
if (addr->dla_dmax > 0) {
for (addr->dla_dlen = len =
prim->unitdata_ind.dl_dest_addr_length,
addrp = addr->dla_daddr,
ap = ((unsigned char *)prim) +
prim->unitdata_ind.dl_dest_addr_offset;
len > 0; len--)
*addrp++ = *ap++;
#if !defined(DLPI_1)
addr->dla_dflag =
prim->unitdata_ind.dl_group_address;
#endif
}
if (addr->dla_smax > 0) {
for (addr->dla_slen = len =
prim->unitdata_ind.dl_src_addr_length,
addrp = addr->dla_saddr,
ap = ((unsigned char *)prim) +
prim->unitdata_ind.dl_src_addr_offset;
len > 0; len--)
*addrp++ = *ap++;
}
*bufflen = data.len;
break;
default:
dl->error = DLOUTSTATE;
return (-1);
}
return (0);
}
return (-1);
}
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