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test-tool: Change write residuals tests overwrite check according to FCP-4

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According to FCP-4 there are several possibilities for target to react on
incorrect data length field value in CDB:

a) process the command normally except that data beyond the FCP_DL count
shall not be requested or transferred;

b) transfer no data and return CHECK CONDITION status with the sense key
set to ILLEGAL REQUEST and the additional sense code set to
INVALID FIELD IN COMMAND INFORMATION UNIT;

Add check to support the second one and accept no data write.
This commit is contained in:
Anastasia Kovaleva
2021-01-27 12:13:10 +03:00
parent 2e8c571955
commit e9bf7c2d05
1 changed files with 24 additions and 0 deletions
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24
test-tool/test_write_residuals.c
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@@ -36,6 +36,7 @@ write_residuals_test(const struct residuals_test_data *tdata)
struct iscsi_data data;
struct scsi_task *task_ret;
int ok;
int scsi_status;
unsigned int xfer_len_byte = 8;
unsigned int i;
unsigned int scsi_opcode_write = SCSI_OPCODE_WRITE10;
@@ -105,11 +106,14 @@ write_residuals_test(const struct residuals_test_data *tdata)
task->sense.ascq == SCSI_SENSE_ASCQ_INVALID_OPERATION_CODE) {
logging(LOG_NORMAL, "[SKIPPED] WRITE%zu is not implemented.", tdata->cdb_size);
command_is_implemented = false;
scsi_free_scsi_task(task);
task = NULL;
return;
}
logging(LOG_VERBOSE, "Verify that target returns SUCCESS or INVALID "
"FIELD IN INFORMATION UNIT");
scsi_status = task->status;
ok = task->status == SCSI_STATUS_GOOD ||
(task->status == SCSI_STATUS_CHECK_CONDITION &&
task->sense.key == SCSI_SENSE_ILLEGAL_REQUEST &&
@@ -158,6 +162,26 @@ write_residuals_test(const struct residuals_test_data *tdata)
break;
}
/* According to FCP target could transfer no data and return
CHECK CONDITION status with the sense key set to
ILLEGAL REQUEST and the additional sense code set to
INVALID FIELD IN COMMAND INFORMATION UNIT; this check prevent
false assert*/
if (scsi_status != SCSI_STATUS_GOOD) {
logging(LOG_VERBOSE, "Verify that blocks were NOT "
"overwritten and still contain 'a'");
for (i = 0; i < 2 * block_size; i++) {
if (scratch[i] != 'a') {
logging(LOG_NORMAL, "Blocks were overwritten "
"and no longer contain 'a'");
CU_FAIL("Blocks were incorrectly overwritten");
break;
}
}
return;
}
logging(LOG_VERBOSE, "Verify that the first block was changed to 'b'");
for (i = 0; i < block_size; i++) {
if (scratch[i] != 'b') {