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Diffstat (limited to 'drivers/scsi/scsi_debug.c')
-rw-r--r--drivers/scsi/scsi_debug.c47
1 files changed, 32 insertions, 15 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 4dda192b8fba..2c816ecb0a92 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -164,29 +164,29 @@ static const char *sdebug_version_date = "20180128";
#define SDEBUG_OPT_RESET_NOISE 0x2000
#define SDEBUG_OPT_NO_CDB_NOISE 0x4000
#define SDEBUG_OPT_HOST_BUSY 0x8000
+#define SDEBUG_OPT_CMD_ABORT 0x10000
#define SDEBUG_OPT_ALL_NOISE (SDEBUG_OPT_NOISE | SDEBUG_OPT_Q_NOISE | \
SDEBUG_OPT_RESET_NOISE)
#define SDEBUG_OPT_ALL_INJECTING (SDEBUG_OPT_RECOVERED_ERR | \
SDEBUG_OPT_TRANSPORT_ERR | \
SDEBUG_OPT_DIF_ERR | SDEBUG_OPT_DIX_ERR | \
SDEBUG_OPT_SHORT_TRANSFER | \
- SDEBUG_OPT_HOST_BUSY)
+ SDEBUG_OPT_HOST_BUSY | \
+ SDEBUG_OPT_CMD_ABORT)
/* When "every_nth" > 0 then modulo "every_nth" commands:
* - a missing response is simulated if SDEBUG_OPT_TIMEOUT is set
* - a RECOVERED_ERROR is simulated on successful read and write
* commands if SDEBUG_OPT_RECOVERED_ERR is set.
* - a TRANSPORT_ERROR is simulated on successful read and write
* commands if SDEBUG_OPT_TRANSPORT_ERR is set.
+ * - similarly for DIF_ERR, DIX_ERR, SHORT_TRANSFER, HOST_BUSY and
+ * CMD_ABORT
*
- * When "every_nth" < 0 then after "- every_nth" commands:
- * - a missing response is simulated if SDEBUG_OPT_TIMEOUT is set
- * - a RECOVERED_ERROR is simulated on successful read and write
- * commands if SDEBUG_OPT_RECOVERED_ERR is set.
- * - a TRANSPORT_ERROR is simulated on successful read and write
- * commands if _DEBUG_OPT_TRANSPORT_ERR is set.
- * This will continue on every subsequent command until some other action
- * occurs (e.g. the user * writing a new value (other than -1 or 1) to
- * every_nth via sysfs).
+ * When "every_nth" < 0 then after "- every_nth" commands the selected
+ * error will be injected. The error will be injected on every subsequent
+ * command until some other action occurs; for example, the user writing
+ * a new value (other than -1 or 1) to every_nth:
+ * echo 0 > /sys/bus/pseudo/drivers/scsi_debug/every_nth
*/
/* As indicated in SAM-5 and SPC-4 Unit Attentions (UAs) are returned in
@@ -281,6 +281,7 @@ struct sdebug_defer {
int issuing_cpu;
bool init_hrt;
bool init_wq;
+ bool aborted; /* true when blk_abort_request() already called */
enum sdeb_defer_type defer_t;
};
@@ -296,6 +297,7 @@ struct sdebug_queued_cmd {
unsigned int inj_dix:1;
unsigned int inj_short:1;
unsigned int inj_host_busy:1;
+ unsigned int inj_cmd_abort:1;
};
struct sdebug_queue {
@@ -3792,6 +3794,7 @@ static struct sdebug_queue *get_queue(struct scsi_cmnd *cmnd)
/* Queued (deferred) command completions converge here. */
static void sdebug_q_cmd_complete(struct sdebug_defer *sd_dp)
{
+ bool aborted = sd_dp->aborted;
int qc_idx;
int retiring = 0;
unsigned long iflags;
@@ -3801,6 +3804,8 @@ static void sdebug_q_cmd_complete(struct sdebug_defer *sd_dp)
struct sdebug_dev_info *devip;
sd_dp->defer_t = SDEB_DEFER_NONE;
+ if (unlikely(aborted))
+ sd_dp->aborted = false;
qc_idx = sd_dp->qc_idx;
sqp = sdebug_q_arr + sd_dp->sqa_idx;
if (sdebug_statistics) {
@@ -3852,6 +3857,11 @@ static void sdebug_q_cmd_complete(struct sdebug_defer *sd_dp)
atomic_set(&retired_max_queue, k + 1);
}
spin_unlock_irqrestore(&sqp->qc_lock, iflags);
+ if (unlikely(aborted)) {
+ if (sdebug_verbose)
+ pr_info("bypassing scsi_done() due to aborted cmd\n");
+ return;
+ }
scp->scsi_done(scp); /* callback to mid level */
}
@@ -4312,7 +4322,8 @@ static void setup_inject(struct sdebug_queue *sqp,
if (sdebug_every_nth > 0)
sqcp->inj_recovered = sqcp->inj_transport
= sqcp->inj_dif
- = sqcp->inj_dix = sqcp->inj_short = 0;
+ = sqcp->inj_dix = sqcp->inj_short
+ = sqcp->inj_host_busy = sqcp->inj_cmd_abort = 0;
return;
}
sqcp->inj_recovered = !!(SDEBUG_OPT_RECOVERED_ERR & sdebug_opts);
@@ -4321,6 +4332,7 @@ static void setup_inject(struct sdebug_queue *sqp,
sqcp->inj_dix = !!(SDEBUG_OPT_DIX_ERR & sdebug_opts);
sqcp->inj_short = !!(SDEBUG_OPT_SHORT_TRANSFER & sdebug_opts);
sqcp->inj_host_busy = !!(SDEBUG_OPT_HOST_BUSY & sdebug_opts);
+ sqcp->inj_cmd_abort = !!(SDEBUG_OPT_CMD_ABORT & sdebug_opts);
}
/* Complete the processing of the thread that queued a SCSI command to this
@@ -4458,7 +4470,14 @@ static int schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip,
if (sdebug_statistics)
sd_dp->issuing_cpu = raw_smp_processor_id();
sd_dp->defer_t = SDEB_DEFER_WQ;
+ if (unlikely(sqcp->inj_cmd_abort))
+ sd_dp->aborted = true;
schedule_work(&sd_dp->ew.work);
+ if (unlikely(sqcp->inj_cmd_abort)) {
+ sdev_printk(KERN_INFO, sdp, "abort request tag %d\n",
+ cmnd->request->tag);
+ blk_abort_request(cmnd->request);
+ }
}
if (unlikely((SDEBUG_OPT_Q_NOISE & sdebug_opts) &&
(scsi_result == device_qfull_result)))
@@ -4844,12 +4863,11 @@ static ssize_t fake_rw_store(struct device_driver *ddp, const char *buf,
(unsigned long)sdebug_dev_size_mb *
1048576;
- fake_storep = vmalloc(sz);
+ fake_storep = vzalloc(sz);
if (NULL == fake_storep) {
pr_err("out of memory, 9\n");
return -ENOMEM;
}
- memset(fake_storep, 0, sz);
}
sdebug_fake_rw = n;
}
@@ -5391,13 +5409,12 @@ static int __init scsi_debug_init(void)
}
if (sdebug_fake_rw == 0) {
- fake_storep = vmalloc(sz);
+ fake_storep = vzalloc(sz);
if (NULL == fake_storep) {
pr_err("out of memory, 1\n");
ret = -ENOMEM;
goto free_q_arr;
}
- memset(fake_storep, 0, sz);
if (sdebug_num_parts > 0)
sdebug_build_parts(fake_storep, sz);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 08:30:58 +0000