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path: root/drivers/scsi/scsi_debug.c
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Diffstat (limited to 'drivers/scsi/scsi_debug.c')
-rw-r--r--drivers/scsi/scsi_debug.c158
1 files changed, 74 insertions, 84 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 30268bb2ddb6..dfcc45bb03b1 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -25,6 +25,9 @@
* module options to "modprobe scsi_debug num_tgts=2" [20021221]
*/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
+
#include <linux/module.h>
#include <linux/kernel.h>
@@ -201,7 +204,6 @@ static const char *scsi_debug_version_date = "20141022";
/* If REPORT LUNS has luns >= 256 it can choose "flat space" (value 1)
* or "peripheral device" addressing (value 0) */
#define SAM2_LUN_ADDRESS_METHOD 0
-#define SAM2_WLUN_REPORT_LUNS 0xc101
/* SCSI_DEBUG_CANQUEUE is the maximum number of commands that can be queued
* (for response) at one time. Can be reduced by max_queue option. Command
@@ -698,7 +700,7 @@ static void sdebug_max_tgts_luns(void)
else
hpnt->max_id = scsi_debug_num_tgts;
/* scsi_debug_max_luns; */
- hpnt->max_lun = SAM2_WLUN_REPORT_LUNS;
+ hpnt->max_lun = SCSI_W_LUN_REPORT_LUNS + 1;
}
spin_unlock(&sdebug_host_list_lock);
}
@@ -1288,7 +1290,7 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC);
if (! arr)
return DID_REQUEUE << 16;
- have_wlun = (scp->device->lun == SAM2_WLUN_REPORT_LUNS);
+ have_wlun = (scp->device->lun == SCSI_W_LUN_REPORT_LUNS);
if (have_wlun)
pq_pdt = 0x1e; /* present, wlun */
else if (scsi_debug_no_lun_0 && (0 == devip->lun))
@@ -1427,12 +1429,11 @@ static int resp_requests(struct scsi_cmnd * scp,
unsigned char * sbuff;
unsigned char *cmd = scp->cmnd;
unsigned char arr[SCSI_SENSE_BUFFERSIZE];
- bool dsense, want_dsense;
+ bool dsense;
int len = 18;
memset(arr, 0, sizeof(arr));
dsense = !!(cmd[1] & 1);
- want_dsense = dsense || scsi_debug_dsense;
sbuff = scp->sense_buffer;
if ((iec_m_pg[2] & 0x4) && (6 == (iec_m_pg[3] & 0xf))) {
if (dsense) {
@@ -2446,8 +2447,7 @@ static int dif_verify(struct sd_dif_tuple *sdt, const void *data,
__be16 csum = dif_compute_csum(data, scsi_debug_sector_size);
if (sdt->guard_tag != csum) {
- pr_err("%s: GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n",
- __func__,
+ pr_err("GUARD check failed on sector %lu rcvd 0x%04x, data 0x%04x\n",
(unsigned long)sector,
be16_to_cpu(sdt->guard_tag),
be16_to_cpu(csum));
@@ -2455,14 +2455,14 @@ static int dif_verify(struct sd_dif_tuple *sdt, const void *data,
}
if (scsi_debug_dif == SD_DIF_TYPE1_PROTECTION &&
be32_to_cpu(sdt->ref_tag) != (sector & 0xffffffff)) {
- pr_err("%s: REF check failed on sector %lu\n",
- __func__, (unsigned long)sector);
+ pr_err("REF check failed on sector %lu\n",
+ (unsigned long)sector);
return 0x03;
}
if (scsi_debug_dif == SD_DIF_TYPE2_PROTECTION &&
be32_to_cpu(sdt->ref_tag) != ei_lba) {
- pr_err("%s: REF check failed on sector %lu\n",
- __func__, (unsigned long)sector);
+ pr_err("REF check failed on sector %lu\n",
+ (unsigned long)sector);
return 0x03;
}
return 0;
@@ -2680,7 +2680,7 @@ resp_read_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
return 0;
}
-void dump_sector(unsigned char *buf, int len)
+static void dump_sector(unsigned char *buf, int len)
{
int i, j, n;
@@ -3365,8 +3365,8 @@ static int resp_report_luns(struct scsi_cmnd * scp,
one_lun[i].scsi_lun[1] = lun & 0xff;
}
if (want_wlun) {
- one_lun[i].scsi_lun[0] = (SAM2_WLUN_REPORT_LUNS >> 8) & 0xff;
- one_lun[i].scsi_lun[1] = SAM2_WLUN_REPORT_LUNS & 0xff;
+ one_lun[i].scsi_lun[0] = (SCSI_W_LUN_REPORT_LUNS >> 8) & 0xff;
+ one_lun[i].scsi_lun[1] = SCSI_W_LUN_REPORT_LUNS & 0xff;
i++;
}
alloc_len = (unsigned char *)(one_lun + i) - arr;
@@ -3449,7 +3449,7 @@ static void sdebug_q_cmd_complete(unsigned long indx)
atomic_inc(&sdebug_completions);
qa_indx = indx;
if ((qa_indx < 0) || (qa_indx >= SCSI_DEBUG_CANQUEUE)) {
- pr_err("%s: wild qa_indx=%d\n", __func__, qa_indx);
+ pr_err("wild qa_indx=%d\n", qa_indx);
return;
}
spin_lock_irqsave(&queued_arr_lock, iflags);
@@ -3457,21 +3457,21 @@ static void sdebug_q_cmd_complete(unsigned long indx)
scp = sqcp->a_cmnd;
if (NULL == scp) {
spin_unlock_irqrestore(&queued_arr_lock, iflags);
- pr_err("%s: scp is NULL\n", __func__);
+ pr_err("scp is NULL\n");
return;
}
devip = (struct sdebug_dev_info *)scp->device->hostdata;
if (devip)
atomic_dec(&devip->num_in_q);
else
- pr_err("%s: devip=NULL\n", __func__);
+ pr_err("devip=NULL\n");
if (atomic_read(&retired_max_queue) > 0)
retiring = 1;
sqcp->a_cmnd = NULL;
if (!test_and_clear_bit(qa_indx, queued_in_use_bm)) {
spin_unlock_irqrestore(&queued_arr_lock, iflags);
- pr_err("%s: Unexpected completion\n", __func__);
+ pr_err("Unexpected completion\n");
return;
}
@@ -3481,7 +3481,7 @@ static void sdebug_q_cmd_complete(unsigned long indx)
retval = atomic_read(&retired_max_queue);
if (qa_indx >= retval) {
spin_unlock_irqrestore(&queued_arr_lock, iflags);
- pr_err("%s: index %d too large\n", __func__, retval);
+ pr_err("index %d too large\n", retval);
return;
}
k = find_last_bit(queued_in_use_bm, retval);
@@ -3509,7 +3509,7 @@ sdebug_q_cmd_hrt_complete(struct hrtimer *timer)
atomic_inc(&sdebug_completions);
qa_indx = sd_hrtp->qa_indx;
if ((qa_indx < 0) || (qa_indx >= SCSI_DEBUG_CANQUEUE)) {
- pr_err("%s: wild qa_indx=%d\n", __func__, qa_indx);
+ pr_err("wild qa_indx=%d\n", qa_indx);
goto the_end;
}
spin_lock_irqsave(&queued_arr_lock, iflags);
@@ -3517,21 +3517,21 @@ sdebug_q_cmd_hrt_complete(struct hrtimer *timer)
scp = sqcp->a_cmnd;
if (NULL == scp) {
spin_unlock_irqrestore(&queued_arr_lock, iflags);
- pr_err("%s: scp is NULL\n", __func__);
+ pr_err("scp is NULL\n");
goto the_end;
}
devip = (struct sdebug_dev_info *)scp->device->hostdata;
if (devip)
atomic_dec(&devip->num_in_q);
else
- pr_err("%s: devip=NULL\n", __func__);
+ pr_err("devip=NULL\n");
if (atomic_read(&retired_max_queue) > 0)
retiring = 1;
sqcp->a_cmnd = NULL;
if (!test_and_clear_bit(qa_indx, queued_in_use_bm)) {
spin_unlock_irqrestore(&queued_arr_lock, iflags);
- pr_err("%s: Unexpected completion\n", __func__);
+ pr_err("Unexpected completion\n");
goto the_end;
}
@@ -3541,7 +3541,7 @@ sdebug_q_cmd_hrt_complete(struct hrtimer *timer)
retval = atomic_read(&retired_max_queue);
if (qa_indx >= retval) {
spin_unlock_irqrestore(&queued_arr_lock, iflags);
- pr_err("%s: index %d too large\n", __func__, retval);
+ pr_err("index %d too large\n", retval);
goto the_end;
}
k = find_last_bit(queued_in_use_bm, retval);
@@ -3580,7 +3580,7 @@ static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev)
return devip;
sdbg_host = *(struct sdebug_host_info **)shost_priv(sdev->host);
if (!sdbg_host) {
- pr_err("%s: Host info NULL\n", __func__);
+ pr_err("Host info NULL\n");
return NULL;
}
list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) {
@@ -3596,8 +3596,7 @@ static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev)
if (!open_devip) { /* try and make a new one */
open_devip = sdebug_device_create(sdbg_host, GFP_ATOMIC);
if (!open_devip) {
- printk(KERN_ERR "%s: out of memory at line %d\n",
- __func__, __LINE__);
+ pr_err("out of memory at line %d\n", __LINE__);
return NULL;
}
}
@@ -3615,7 +3614,7 @@ static struct sdebug_dev_info * devInfoReg(struct scsi_device * sdev)
static int scsi_debug_slave_alloc(struct scsi_device *sdp)
{
if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
- printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %llu>\n",
+ pr_info("slave_alloc <%u %u %u %llu>\n",
sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
queue_flag_set_unlocked(QUEUE_FLAG_BIDI, sdp->request_queue);
return 0;
@@ -3626,7 +3625,7 @@ static int scsi_debug_slave_configure(struct scsi_device *sdp)
struct sdebug_dev_info *devip;
if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
- printk(KERN_INFO "scsi_debug: slave_configure <%u %u %u %llu>\n",
+ pr_info("slave_configure <%u %u %u %llu>\n",
sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN)
sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN;
@@ -3646,7 +3645,7 @@ static void scsi_debug_slave_destroy(struct scsi_device *sdp)
(struct sdebug_dev_info *)sdp->hostdata;
if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
- printk(KERN_INFO "scsi_debug: slave_destroy <%u %u %u %llu>\n",
+ pr_info("slave_destroy <%u %u %u %llu>\n",
sdp->host->host_no, sdp->channel, sdp->id, sdp->lun);
if (devip) {
/* make this slot available for re-use */
@@ -3897,8 +3896,7 @@ static void __init sdebug_build_parts(unsigned char *ramp,
return;
if (scsi_debug_num_parts > SDEBUG_MAX_PARTS) {
scsi_debug_num_parts = SDEBUG_MAX_PARTS;
- pr_warn("%s: reducing partitions to %d\n", __func__,
- SDEBUG_MAX_PARTS);
+ pr_warn("reducing partitions to %d\n", SDEBUG_MAX_PARTS);
}
num_sectors = (int)sdebug_store_sectors;
sectors_per_part = (num_sectors - sdebug_sectors_per)
@@ -3942,14 +3940,20 @@ schedule_resp(struct scsi_cmnd *cmnd, struct sdebug_dev_info *devip,
unsigned long iflags;
int k, num_in_q, qdepth, inject;
struct sdebug_queued_cmd *sqcp = NULL;
- struct scsi_device *sdp = cmnd->device;
+ struct scsi_device *sdp;
+
+ /* this should never happen */
+ if (WARN_ON(!cmnd))
+ return SCSI_MLQUEUE_HOST_BUSY;
- if (NULL == cmnd || NULL == devip) {
- pr_warn("%s: called with NULL cmnd or devip pointer\n",
- __func__);
+ if (NULL == devip) {
+ pr_warn("called devip == NULL\n");
/* no particularly good error to report back */
return SCSI_MLQUEUE_HOST_BUSY;
}
+
+ sdp = cmnd->device;
+
if ((scsi_result) && (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts))
sdev_printk(KERN_INFO, sdp, "%s: non-zero result=0x%x\n",
__func__, scsi_result);
@@ -4383,8 +4387,7 @@ static ssize_t fake_rw_store(struct device_driver *ddp, const char *buf,
fake_storep = vmalloc(sz);
if (NULL == fake_storep) {
- pr_err("%s: out of memory, 9\n",
- __func__);
+ pr_err("out of memory, 9\n");
return -ENOMEM;
}
memset(fake_storep, 0, sz);
@@ -4784,8 +4787,7 @@ static int __init scsi_debug_init(void)
atomic_set(&retired_max_queue, 0);
if (scsi_debug_ndelay >= 1000000000) {
- pr_warn("%s: ndelay must be less than 1 second, ignored\n",
- __func__);
+ pr_warn("ndelay must be less than 1 second, ignored\n");
scsi_debug_ndelay = 0;
} else if (scsi_debug_ndelay > 0)
scsi_debug_delay = DELAY_OVERRIDDEN;
@@ -4797,8 +4799,7 @@ static int __init scsi_debug_init(void)
case 4096:
break;
default:
- pr_err("%s: invalid sector_size %d\n", __func__,
- scsi_debug_sector_size);
+ pr_err("invalid sector_size %d\n", scsi_debug_sector_size);
return -EINVAL;
}
@@ -4811,29 +4812,28 @@ static int __init scsi_debug_init(void)
break;
default:
- pr_err("%s: dif must be 0, 1, 2 or 3\n", __func__);
+ pr_err("dif must be 0, 1, 2 or 3\n");
return -EINVAL;
}
if (scsi_debug_guard > 1) {
- pr_err("%s: guard must be 0 or 1\n", __func__);
+ pr_err("guard must be 0 or 1\n");
return -EINVAL;
}
if (scsi_debug_ato > 1) {
- pr_err("%s: ato must be 0 or 1\n", __func__);
+ pr_err("ato must be 0 or 1\n");
return -EINVAL;
}
if (scsi_debug_physblk_exp > 15) {
- pr_err("%s: invalid physblk_exp %u\n", __func__,
- scsi_debug_physblk_exp);
+ pr_err("invalid physblk_exp %u\n", scsi_debug_physblk_exp);
return -EINVAL;
}
if (scsi_debug_lowest_aligned > 0x3fff) {
- pr_err("%s: lowest_aligned too big: %u\n", __func__,
- scsi_debug_lowest_aligned);
+ pr_err("lowest_aligned too big: %u\n",
+ scsi_debug_lowest_aligned);
return -EINVAL;
}
@@ -4863,7 +4863,7 @@ static int __init scsi_debug_init(void)
if (0 == scsi_debug_fake_rw) {
fake_storep = vmalloc(sz);
if (NULL == fake_storep) {
- pr_err("%s: out of memory, 1\n", __func__);
+ pr_err("out of memory, 1\n");
return -ENOMEM;
}
memset(fake_storep, 0, sz);
@@ -4877,11 +4877,10 @@ static int __init scsi_debug_init(void)
dif_size = sdebug_store_sectors * sizeof(struct sd_dif_tuple);
dif_storep = vmalloc(dif_size);
- pr_err("%s: dif_storep %u bytes @ %p\n", __func__, dif_size,
- dif_storep);
+ pr_err("dif_storep %u bytes @ %p\n", dif_size, dif_storep);
if (dif_storep == NULL) {
- pr_err("%s: out of mem. (DIX)\n", __func__);
+ pr_err("out of mem. (DIX)\n");
ret = -ENOMEM;
goto free_vm;
}
@@ -4903,18 +4902,17 @@ static int __init scsi_debug_init(void)
if (scsi_debug_unmap_alignment &&
scsi_debug_unmap_granularity <=
scsi_debug_unmap_alignment) {
- pr_err("%s: ERR: unmap_granularity <= unmap_alignment\n",
- __func__);
+ pr_err("ERR: unmap_granularity <= unmap_alignment\n");
return -EINVAL;
}
map_size = lba_to_map_index(sdebug_store_sectors - 1) + 1;
map_storep = vmalloc(BITS_TO_LONGS(map_size) * sizeof(long));
- pr_info("%s: %lu provisioning blocks\n", __func__, map_size);
+ pr_info("%lu provisioning blocks\n", map_size);
if (map_storep == NULL) {
- pr_err("%s: out of mem. (MAP)\n", __func__);
+ pr_err("out of mem. (MAP)\n");
ret = -ENOMEM;
goto free_vm;
}
@@ -4928,18 +4926,18 @@ static int __init scsi_debug_init(void)
pseudo_primary = root_device_register("pseudo_0");
if (IS_ERR(pseudo_primary)) {
- pr_warn("%s: root_device_register() error\n", __func__);
+ pr_warn("root_device_register() error\n");
ret = PTR_ERR(pseudo_primary);
goto free_vm;
}
ret = bus_register(&pseudo_lld_bus);
if (ret < 0) {
- pr_warn("%s: bus_register error: %d\n", __func__, ret);
+ pr_warn("bus_register error: %d\n", ret);
goto dev_unreg;
}
ret = driver_register(&sdebug_driverfs_driver);
if (ret < 0) {
- pr_warn("%s: driver_register error: %d\n", __func__, ret);
+ pr_warn("driver_register error: %d\n", ret);
goto bus_unreg;
}
@@ -4948,16 +4946,14 @@ static int __init scsi_debug_init(void)
for (k = 0; k < host_to_add; k++) {
if (sdebug_add_adapter()) {
- pr_err("%s: sdebug_add_adapter failed k=%d\n",
- __func__, k);
+ pr_err("sdebug_add_adapter failed k=%d\n", k);
break;
}
}
- if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) {
- pr_info("%s: built %d host(s)\n", __func__,
- scsi_debug_add_host);
- }
+ if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts)
+ pr_info("built %d host(s)\n", scsi_debug_add_host);
+
return 0;
bus_unreg:
@@ -4965,10 +4961,8 @@ bus_unreg:
dev_unreg:
root_device_unregister(pseudo_primary);
free_vm:
- if (map_storep)
- vfree(map_storep);
- if (dif_storep)
- vfree(dif_storep);
+ vfree(map_storep);
+ vfree(dif_storep);
vfree(fake_storep);
return ret;
@@ -4986,9 +4980,7 @@ static void __exit scsi_debug_exit(void)
bus_unregister(&pseudo_lld_bus);
root_device_unregister(pseudo_primary);
- if (dif_storep)
- vfree(dif_storep);
-
+ vfree(dif_storep);
vfree(fake_storep);
}
@@ -5012,8 +5004,7 @@ static int sdebug_add_adapter(void)
sdbg_host = kzalloc(sizeof(*sdbg_host),GFP_KERNEL);
if (NULL == sdbg_host) {
- printk(KERN_ERR "%s: out of memory at line %d\n",
- __func__, __LINE__);
+ pr_err("out of memory at line %d\n", __LINE__);
return -ENOMEM;
}
@@ -5023,8 +5014,7 @@ static int sdebug_add_adapter(void)
for (k = 0; k < devs_per_host; k++) {
sdbg_devinfo = sdebug_device_create(sdbg_host, GFP_KERNEL);
if (!sdbg_devinfo) {
- printk(KERN_ERR "%s: out of memory at line %d\n",
- __func__, __LINE__);
+ pr_err("out of memory at line %d\n", __LINE__);
error = -ENOMEM;
goto clean;
}
@@ -5178,7 +5168,7 @@ scsi_debug_queuecommand(struct scsi_cmnd *scp)
}
sdev_printk(KERN_INFO, sdp, "%s: cmd %s\n", my_name, b);
}
- has_wlun_rl = (sdp->lun == SAM2_WLUN_REPORT_LUNS);
+ has_wlun_rl = (sdp->lun == SCSI_W_LUN_REPORT_LUNS);
if ((sdp->lun >= scsi_debug_max_luns) && !has_wlun_rl)
return schedule_resp(scp, NULL, errsts_no_connect, 0);
@@ -5338,7 +5328,7 @@ static int sdebug_driver_probe(struct device * dev)
sdebug_driver_template.use_clustering = ENABLE_CLUSTERING;
hpnt = scsi_host_alloc(&sdebug_driver_template, sizeof(sdbg_host));
if (NULL == hpnt) {
- pr_err("%s: scsi_host_alloc failed\n", __func__);
+ pr_err("scsi_host_alloc failed\n");
error = -ENODEV;
return error;
}
@@ -5349,7 +5339,8 @@ static int sdebug_driver_probe(struct device * dev)
hpnt->max_id = scsi_debug_num_tgts + 1;
else
hpnt->max_id = scsi_debug_num_tgts;
- hpnt->max_lun = SAM2_WLUN_REPORT_LUNS; /* = scsi_debug_max_luns; */
+ /* = scsi_debug_max_luns; */
+ hpnt->max_lun = SCSI_W_LUN_REPORT_LUNS + 1;
host_prot = 0;
@@ -5381,7 +5372,7 @@ static int sdebug_driver_probe(struct device * dev)
scsi_host_set_prot(hpnt, host_prot);
- printk(KERN_INFO "scsi_debug: host protection%s%s%s%s%s%s%s\n",
+ pr_info("host protection%s%s%s%s%s%s%s\n",
(host_prot & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "",
(host_prot & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "",
(host_prot & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "",
@@ -5409,7 +5400,7 @@ static int sdebug_driver_probe(struct device * dev)
error = scsi_add_host(hpnt, &sdbg_host->dev);
if (error) {
- printk(KERN_ERR "%s: scsi_add_host failed\n", __func__);
+ pr_err("scsi_add_host failed\n");
error = -ENODEV;
scsi_host_put(hpnt);
} else
@@ -5426,8 +5417,7 @@ static int sdebug_driver_remove(struct device * dev)
sdbg_host = to_sdebug_host(dev);
if (!sdbg_host) {
- printk(KERN_ERR "%s: Unable to locate host info\n",
- __func__);
+ pr_err("Unable to locate host info\n");
return -ENODEV;
}
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