11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T     */
  28 /*        All Rights Reserved   */
  29 
  30 
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"        /* from S5R4 1.10 */
  32 
  33 /*
  34  * Description: The pckt module packetizes messages on
  35  *              its read queue by pre-fixing an M_PROTO
  36  *              message type to certain incoming messages.
  37  */
  38 
  39 #include <sys/types.h>
  40 #include <sys/param.h>
  41 #include <sys/stream.h>
  42 #include <sys/stropts.h>
  43 #include <sys/kmem.h>
  44 #include <sys/errno.h>
  45 #include <sys/ddi.h>
  46 #include <sys/sunddi.h>
  47 #include <sys/debug.h>
  48 
  49 /*
  50  * This is the loadable module wrapper.
  51  */
  52 #include <sys/conf.h>

 207         dev_t   *devp,          /* pointer to stream tail's dev */
 208         int     oflag,          /* the user open(2) supplied flags */
 209         int     sflag,          /* open state flag */
 210         cred_t  *credp)         /* credentials */
 211 {
 212         struct pckt_info        *pip;
 213         mblk_t                  *mop; /* ptr to a setopts msg block */
 214         struct stroptions       *sop;
 215 
 216         if (sflag != MODOPEN)
 217                 return (EINVAL);
 218 
 219         if (q->q_ptr != NULL) {
 220                 /* It's already attached. */
 221                 return (0);
 222         }
 223 
 224         /*
 225          * Allocate state structure.
 226          */
 227         pip = kmem_alloc(sizeof (*pip), KM_SLEEP);
 228         bzero(pip, sizeof (*pip));
 229 
 230 #ifdef _MULTI_DATAMODEL
 231         pip->model = ddi_model_convert_from(get_udatamodel());
 232 #endif /* _MULTI_DATAMODEL */
 233 
 234         /*
 235          * Cross-link.
 236          */
 237         pip->pi_qptr = q;
 238         q->q_ptr = pip;
 239         WR(q)->q_ptr = pip;
 240 
 241         qprocson(q);
 242 
 243         /*
 244          * Initialize an M_SETOPTS message to set up hi/lo water marks on
 245          * stream head read queue.
 246          */
 247 
 248         while ((mop = allocb(sizeof (struct stroptions), BPRI_MED)) == NULL) {

  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T     */
  28 /*        All Rights Reserved   */
  29 
  30 


  31 /*
  32  * Description: The pckt module packetizes messages on
  33  *              its read queue by pre-fixing an M_PROTO
  34  *              message type to certain incoming messages.
  35  */
  36 
  37 #include <sys/types.h>
  38 #include <sys/param.h>
  39 #include <sys/stream.h>
  40 #include <sys/stropts.h>
  41 #include <sys/kmem.h>
  42 #include <sys/errno.h>
  43 #include <sys/ddi.h>
  44 #include <sys/sunddi.h>
  45 #include <sys/debug.h>
  46 
  47 /*
  48  * This is the loadable module wrapper.
  49  */
  50 #include <sys/conf.h>

 205         dev_t   *devp,          /* pointer to stream tail's dev */
 206         int     oflag,          /* the user open(2) supplied flags */
 207         int     sflag,          /* open state flag */
 208         cred_t  *credp)         /* credentials */
 209 {
 210         struct pckt_info        *pip;
 211         mblk_t                  *mop; /* ptr to a setopts msg block */
 212         struct stroptions       *sop;
 213 
 214         if (sflag != MODOPEN)
 215                 return (EINVAL);
 216 
 217         if (q->q_ptr != NULL) {
 218                 /* It's already attached. */
 219                 return (0);
 220         }
 221 
 222         /*
 223          * Allocate state structure.
 224          */
 225         pip = kmem_zalloc(sizeof (*pip), KM_SLEEP);

 226 
 227 #ifdef _MULTI_DATAMODEL
 228         pip->model = ddi_model_convert_from(get_udatamodel());
 229 #endif /* _MULTI_DATAMODEL */
 230 
 231         /*
 232          * Cross-link.
 233          */
 234         pip->pi_qptr = q;
 235         q->q_ptr = pip;
 236         WR(q)->q_ptr = pip;
 237 
 238         qprocson(q);
 239 
 240         /*
 241          * Initialize an M_SETOPTS message to set up hi/lo water marks on
 242          * stream head read queue.
 243          */
 244 
 245         while ((mop = allocb(sizeof (struct stroptions), BPRI_MED)) == NULL) {