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TESTS: Add support to test against a /dev/sg device on linux

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Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
This commit is contained in:
Ronnie Sahlberg
2014-09-19 16:26:46 -07:00
parent bd6570c324
commit 55c1f0d2ec
5 changed files with 195 additions and 31 deletions
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131
test-tool/iscsi-support.c
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@@ -1,3 +1,4 @@
/*
iscsi-test tool support
@@ -18,6 +19,8 @@
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#define _GNU_SOURCE
#include <assert.h>
#include <sys/syscall.h>
@@ -31,6 +34,13 @@
#include <string.h>
#include <poll.h>
#include <fnmatch.h>
#ifdef HAVE_SG_IO
#include <fcntl.h>
#include <sys/ioctl.h>
#include <scsi/sg.h>
#endif
#include "slist.h"
#include "iscsi.h"
#include "scsi-lowlevel.h"
@@ -170,16 +180,119 @@ static int check_result(const char *opcode, struct scsi_device *sdev,
static struct scsi_task *send_scsi_command(struct scsi_device *sdev, struct scsi_task *task, struct iscsi_data *d)
{
if (sdev->error_str != NULL) {
free(discard_const(sdev->error_str));
sdev->error_str = NULL;
}
task = iscsi_scsi_command_sync(sdev->iscsi_ctx, sdev->iscsi_lun, task, d);
if (task == NULL) {
sdev->error_str = strdup(iscsi_get_error(sdev->iscsi_ctx));
if (sdev->iscsi_url) {
if (sdev->error_str != NULL) {
free(discard_const(sdev->error_str));
sdev->error_str = NULL;
}
task = iscsi_scsi_command_sync(sdev->iscsi_ctx, sdev->iscsi_lun, task, d);
if (task == NULL) {
sdev->error_str = strdup(iscsi_get_error(sdev->iscsi_ctx));
}
return task;
}
return task;
#ifdef HAVE_SG_IO
if (sdev->sgio_dev) {
sg_io_hdr_t io_hdr;
unsigned int sense_len=32;
unsigned char sense[sense_len];
char buf[1024];
memset(&io_hdr, 0, sizeof(sg_io_hdr_t));
io_hdr.interface_id = 'S';
/* CDB */
io_hdr.cmdp = task->cdb;
io_hdr.cmd_len = task->cdb_size;
/* Where to store the sense_data, if there was an error */
io_hdr.sbp = sense;
io_hdr.mx_sb_len = sense_len;
sense_len=0;
/* Transfer direction, either in or out. Linux does not yet
support bidirectional SCSI transfers ?
*/
switch (task->xfer_dir) {
case SCSI_XFER_WRITE:
io_hdr.dxfer_direction = SG_DXFER_TO_DEV;
io_hdr.dxferp = d->data;
io_hdr.dxfer_len = d->size;
break;
case SCSI_XFER_READ:
io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
task->datain.size = task->expxferlen;
task->datain.data = malloc(task->expxferlen);
io_hdr.dxferp = task->datain.data;
io_hdr.dxfer_len = task->datain.size;
break;
}
/* SCSI timeout in ms */
io_hdr.timeout = 5000;
if(ioctl(sdev->sgio_fd, SG_IO, &io_hdr) < 0){
sdev->error_str = strdup("SG_IO ioctl failed");
return NULL;
}
/* now for the error processing */
if(io_hdr.sb_len_wr > 0){
task->status = SCSI_STATUS_CHECK_CONDITION;
task->sense.error_type = sense[0] & 0x7f;
switch (task->sense.error_type) {
case 0x70:
case 0x71:
task->sense.key = sense[2] & 0x0f;
task->sense.ascq = scsi_get_uint16(&sense[12]);
break;
case 0x72:
case 0x73:
task->sense.key = sense[1] & 0x0f;
task->sense.ascq = scsi_get_uint16(&sense[2]);
break;
}
sense_len=io_hdr.sb_len_wr;
snprintf(buf, sizeof(buf), "SENSE KEY:%s(%d) ASCQ:%s(0x%04x)",
scsi_sense_key_str(task->sense.key),
task->sense.key,
scsi_sense_ascq_str(task->sense.ascq),
task->sense.ascq);
sdev->error_str = strdup(buf);
return task;
}
if(io_hdr.masked_status){
task->status = SCSI_STATUS_ERROR;
task->sense.key = 0x0f;
task->sense.ascq = 0xffff;
sdev->error_str = strdup("SCSI masked error");
return NULL;
}
if(io_hdr.host_status){
task->status = SCSI_STATUS_ERROR;
task->sense.key = 0x0f;
task->sense.ascq = 0xffff;
snprintf(buf, sizeof(buf), "SCSI host error. Status=0x%x", io_hdr.host_status);
sdev->error_str = strdup(buf);
return task;
}
if(io_hdr.driver_status){
task->status = SCSI_STATUS_ERROR;
task->sense.key = 0x0f;
task->sense.ascq = 0xffff;
sdev->error_str = strdup("SCSI driver error");
return NULL;
}
return task;
}
#endif
return NULL;
}
void logging(int level, const char *format, ...)
@@ -1714,7 +1827,7 @@ int report_supported_opcodes(struct scsi_device *sdev, struct scsi_task **out_ta
task = send_scsi_command(sdev, task, NULL);
ret = check_result("INQUIRY", sdev, task, status, key, ascq, num_ascq);
ret = check_result("REPORT_SUPPORTED_OPCODES", sdev, task, status, key, ascq, num_ascq);
if (out_task) {
*out_task = task;
} else if (task) {