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/*
Copyright (C) 2013 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <CUnit/CUnit.h>
#include "iscsi.h"
#include "scsi-lowlevel.h"
#include "iscsi-support.h"
#include "iscsi-test-cu.h"
static void check_lbp(int *supports_lbp)
{
*supports_lbp = 0;
CHECK_FOR_THIN_PROVISIONING;
*supports_lbp = 1;
}
void
test_inquiry_block_limits(void)
{
int supports_lbp, ret;
struct scsi_inquiry_block_limits *bl;
struct scsi_task *bl_task = NULL;
struct scsi_inquiry_logical_block_provisioning *lbp = NULL;
struct scsi_task *lbp_task = NULL;
logging(LOG_VERBOSE, LOG_BLANK_LINE);
logging(LOG_VERBOSE, "Test of the INQUIRY Block Limits");
CHECK_FOR_SBC;
logging(LOG_VERBOSE, "Block device. Verify that we can read Block "
"Limits VPD");
ret = inquiry(sd, &bl_task,
1, SCSI_INQUIRY_PAGECODE_BLOCK_LIMITS, 255,
EXPECT_STATUS_GOOD);
CU_ASSERT_EQUAL(ret, 0);
if (ret != 0) {
logging(LOG_NORMAL, "[FAILURE] failed to send inquiry.");
goto finished;
}
bl = scsi_datain_unmarshall(bl_task);
if (bl == NULL) {
logging(LOG_NORMAL, "[FAILURE] failed to unmarshall inquiry "
"datain blob.");
CU_FAIL("[FAILURE] failed to unmarshall inquiry "
"datain blob.");
goto finished;
}
logging(LOG_VERBOSE, "Verify that the PageLength matches up with the "
"size of the DATA-IN buffer.");
CU_ASSERT_EQUAL(bl_task->datain.size, bl_task->datain.data[3] + 4);
if (bl_task->datain.size != bl_task->datain.data[3] + 4) {
logging(LOG_NORMAL, "[FAILURE] Invalid PageLength returned. "
"Was %d but expected %d",
bl_task->datain.data[3], bl_task->datain.size - 4);
} else {
logging(LOG_VERBOSE, "[SUCCESS] PageLength matches DataIn "
"buffer size");
}
logging(LOG_VERBOSE, "Verify that the PageLength matches SCSI-level.");
/* if it is not SBC3 then we assume it must be SBC2 */
if (sbc3_support) {
logging(LOG_VERBOSE, "Device claims SBC-3. Verify that " "page size is >= 60");
} else {
logging(LOG_VERBOSE, "Device is not SBC-3. Verify that "
"PageLength == 8 (but allow >= 60 too. Some SBC-2 "
"devices support some SBC-3 features.");
}
if (bl_task->datain.data[3] == 8) {
if (sbc3_support) {
logging(LOG_NORMAL, "[FAILURE] Invalid PageLength "
"returned. SBC3 claimed but page length "
"is 8.");
CU_FAIL("[FAILED] Invalid pagelength returned. "
"SBC3 claimed but page length is 8.");
}
} else if (bl_task->datain.size >= 60) {
if (!sbc3_support) {
logging(LOG_NORMAL, "[WARNING] SBC-3 pagelength "
"(>=60) returned but SBC-3 support was not "
"claimed in the standard inquiry page.");
CU_FAIL("[WARNING] SBC-3 pagelength "
"(>=60) returned but SBC-3 support was not "
"claimed in the standard inquiry page.");
}
}
if (bl_task->datain.data[3] != 0x3c) {
goto finished;
}
check_lbp(&supports_lbp);
if (!supports_lbp)
goto finished;
/*
* MAXIMUM UNMAP LBA COUNT
* MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT
*/
logging(LOG_VERBOSE, "Try reading the logical block provisioning VPD");
ret = inquiry(sd, &lbp_task,
1, SCSI_INQUIRY_PAGECODE_LOGICAL_BLOCK_PROVISIONING, 255,
EXPECT_STATUS_GOOD);
if (ret == 0) {
lbp = scsi_datain_unmarshall(lbp_task);
if (lbp == NULL) {
logging(LOG_NORMAL, "[FAILURE] failed to unmarshall "
"inquiry datain blob.");
}
}
if (lbp && lbp->lbpu) {
/* We support UNMAP so MAXIMUM UNMAP LBA COUNT and
* MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT.
* They must be > 0.
* It can be 0xffffffff which means no limit, but if there is
* an explicit limit set, then we check that it looks sane.
* Sane here means < 1M.
*/
logging(LOG_VERBOSE, "Device claims UNMAP support via LBPU");
logging(LOG_VERBOSE, "Verify that MAXIMUM UNMAP LBA COUNT is "
"not 0");
CU_ASSERT_NOT_EQUAL(bl->max_unmap, 0);
logging(LOG_VERBOSE, "Verify that MAXIMUM UNMAP LBA COUNT is "
"at least 2^LBPPBE");
CU_ASSERT_EQUAL(bl->max_unmap >= (1U << rc16->lbppbe), 1);
if (bl->max_unmap != 0xffffffff) {
logging(LOG_VERBOSE, "Verify that MAXIMUM UNMAP LBA "
"COUNT is not insanely big");
CU_ASSERT_TRUE(bl->max_unmap <= 1024*1024);
}
logging(LOG_VERBOSE, "Verify that MAXIMUM UNMAP BLOCK "
"DESCRIPTOR COUNT is not 0");
CU_ASSERT_NOT_EQUAL(bl->max_unmap_bdc, 0);
if (bl->max_unmap_bdc != 0xffffffff) {
logging(LOG_VERBOSE, "Verify that MAXIMUM UNMAP "
"BLOCK DESCRIPTOR COUNT is not insanely big");
CU_ASSERT_TRUE(bl->max_unmap_bdc <= 1024*1024);
}
} else {
logging(LOG_VERBOSE, "Device does not claim UNMAP support via "
"LBPU");
logging(LOG_VERBOSE, "Verify that MAXIMUM UNMAP LBA COUNT is "
"0");
CU_ASSERT_EQUAL(bl->max_unmap, 0);
logging(LOG_VERBOSE, "Verify that MAXIMUM UNMAP BLOCK "
"DESCRIPTOR COUNT is 0");
CU_ASSERT_EQUAL(bl->max_unmap_bdc, 0);
}
finished:
scsi_free_scsi_task(bl_task);
scsi_free_scsi_task(lbp_task);
}
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