1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26
27
28 #include "Trace.h"
29 #include "HBA.h"
30 #include "HBAPort.h"
31 #include "Exceptions.h"
32 #include "sun_fc.h"
33 #include <unistd.h>
34
35 #define BUSY_SLEEP 10000 /* 1/10 second */
36 #define BUSY_RETRY_TIMER 5000000000ULL /* Retry for 5 seconds */
37 #ifdef __cplusplus
38 extern "C" {
39 #endif
40
41 /**
42 * @memo Send a SCSI report luns command to a remote WWN
43 * @return HBA_STATUS_OK or other error code
44 * scsiStatus should be checked to ensure SCSI command
45 * was a success.
46 * @param handle The HBA to operate on
47 * @param portWWN Indicates the HBA port to send command through
48 * @param targetPortWWN Indicates the target to send command to
49 * @param responseBuffer User-allocated response buffer
50 * @param responseSize Size of User-allocated response buffer
51 * @param scsiStatus User-allocated scsi status byte
52 *
53 * @doc This routine will attempt a limited number of retries
54 * When busy or again errors are encountered.
55 */
Sun_fcScsiReportLUNsV2(HBA_HANDLE handle,HBA_WWN portWWN,HBA_WWN targetPortWWN,void * responseBuffer,HBA_UINT32 * responseSize,HBA_UINT8 * scsiStatus,void * senseBuffer,HBA_UINT32 * senseSize)56 HBA_STATUS Sun_fcScsiReportLUNsV2(HBA_HANDLE handle, HBA_WWN portWWN,
57 HBA_WWN targetPortWWN,
58 void *responseBuffer, HBA_UINT32 *responseSize,
59 HBA_UINT8 *scsiStatus,
60 void *senseBuffer, HBA_UINT32 *senseSize) {
61 Trace log("Sun_fcScsiReportLUNsV2");
62
63 HBA_STATUS status = HBA_STATUS_OK;
64
65 hrtime_t start = gethrtime();
66 hrtime_t end = start + BUSY_RETRY_TIMER;
67 for (hrtime_t cur = start; cur < end; cur = gethrtime()) {
68 try {
69 Handle *myHandle = Handle::findHandle(handle);
70 HBA *hba = myHandle->getHBA();
71 HBAPort *port = hba->getPort(wwnConversion(portWWN.wwn));
72 port->sendReportLUNs(wwnConversion(targetPortWWN.wwn),
73 responseBuffer, responseSize, scsiStatus,
74 senseBuffer, senseSize);
75 return (HBA_STATUS_OK);
76 } catch (BusyException &e) {
77 usleep(BUSY_SLEEP);
78 status = HBA_STATUS_ERROR_BUSY;
79 continue;
80 } catch (TryAgainException &e) {
81 usleep(BUSY_SLEEP);
82 status = HBA_STATUS_ERROR_TRY_AGAIN;
83 continue;
84 } catch (HBAException &e) {
85 return (e.getErrorCode());
86 } catch (...) {
87 log.internalError(
88 "Uncaught exception");
89 return (HBA_STATUS_ERROR);
90 }
91 }
92 return (status);
93 }
94 #ifdef __cplusplus
95 }
96 #endif
97