* This file contains the Storage Engine <-> Linux BlockIO transport
* specific functions.
*
- * Copyright (c) 2003, 2004, 2005 PyX Technologies, Inc.
- * Copyright (c) 2005, 2006, 2007 SBE, Inc.
- * Copyright (c) 2007-2010 Rising Tide Systems
- * Copyright (c) 2008-2010 Linux-iSCSI.org
+ * (c) Copyright 2003-2012 RisingTide Systems LLC.
*
* Nicholas A. Bellinger <nab@kernel.org>
*
#define IBLOCK_MAX_BIO_PER_TASK 32 /* max # of bios to submit at a time */
#define IBLOCK_BIO_POOL_SIZE 128
-static struct se_subsystem_api iblock_template;
+static inline struct iblock_dev *IBLOCK_DEV(struct se_device *dev)
+{
+ return container_of(dev, struct iblock_dev, dev);
+}
+
-static void iblock_bio_done(struct bio *, int);
+static struct se_subsystem_api iblock_template;
/* iblock_attach_hba(): (Part of se_subsystem_api_t template)
*
{
}
-static void *iblock_allocate_virtdevice(struct se_hba *hba, const char *name)
+static struct se_device *iblock_alloc_device(struct se_hba *hba, const char *name)
{
struct iblock_dev *ib_dev = NULL;
pr_debug( "IBLOCK: Allocated ib_dev for %s\n", name);
- return ib_dev;
+ return &ib_dev->dev;
}
-static struct se_device *iblock_create_virtdevice(
- struct se_hba *hba,
- struct se_subsystem_dev *se_dev,
- void *p)
+static int iblock_configure_device(struct se_device *dev)
{
- struct iblock_dev *ib_dev = p;
- struct se_device *dev;
- struct se_dev_limits dev_limits;
- struct block_device *bd = NULL;
+ struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
struct request_queue *q;
- struct queue_limits *limits;
- u32 dev_flags = 0;
+ struct block_device *bd = NULL;
fmode_t mode;
- int ret = -EINVAL;
+ int ret = -ENOMEM;
- if (!ib_dev) {
- pr_err("Unable to locate struct iblock_dev parameter\n");
- return ERR_PTR(ret);
+ if (!(ib_dev->ibd_flags & IBDF_HAS_UDEV_PATH)) {
+ pr_err("Missing udev_path= parameters for IBLOCK\n");
+ return -EINVAL;
}
- memset(&dev_limits, 0, sizeof(struct se_dev_limits));
ib_dev->ibd_bio_set = bioset_create(IBLOCK_BIO_POOL_SIZE, 0);
if (!ib_dev->ibd_bio_set) {
- pr_err("IBLOCK: Unable to create bioset()\n");
- return ERR_PTR(-ENOMEM);
+ pr_err("IBLOCK: Unable to create bioset\n");
+ goto out;
}
- pr_debug("IBLOCK: Created bio_set()\n");
- /*
- * iblock_check_configfs_dev_params() ensures that ib_dev->ibd_udev_path
- * must already have been set in order for echo 1 > $HBA/$DEV/enable to run.
- */
+
pr_debug( "IBLOCK: Claiming struct block_device: %s\n",
ib_dev->ibd_udev_path);
bd = blkdev_get_by_path(ib_dev->ibd_udev_path, mode, ib_dev);
if (IS_ERR(bd)) {
ret = PTR_ERR(bd);
- goto failed;
+ goto out_free_bioset;
}
- /*
- * Setup the local scope queue_limits from struct request_queue->limits
- * to pass into transport_add_device_to_core_hba() as struct se_dev_limits.
- */
- q = bdev_get_queue(bd);
- limits = &dev_limits.limits;
- limits->logical_block_size = bdev_logical_block_size(bd);
- limits->max_hw_sectors = UINT_MAX;
- limits->max_sectors = UINT_MAX;
- dev_limits.hw_queue_depth = q->nr_requests;
- dev_limits.queue_depth = q->nr_requests;
-
ib_dev->ibd_bd = bd;
- dev = transport_add_device_to_core_hba(hba,
- &iblock_template, se_dev, dev_flags, ib_dev,
- &dev_limits, "IBLOCK", IBLOCK_VERSION);
- if (!dev)
- goto failed;
+ q = bdev_get_queue(bd);
+
+ dev->dev_attrib.hw_block_size = bdev_logical_block_size(bd);
+ dev->dev_attrib.hw_max_sectors = UINT_MAX;
+ dev->dev_attrib.hw_queue_depth = q->nr_requests;
/*
* Check if the underlying struct block_device request_queue supports
* in ATA and we need to set TPE=1
*/
if (blk_queue_discard(q)) {
- dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count =
+ dev->dev_attrib.max_unmap_lba_count =
q->limits.max_discard_sectors;
+
/*
* Currently hardcoded to 1 in Linux/SCSI code..
*/
- dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = 1;
- dev->se_sub_dev->se_dev_attrib.unmap_granularity =
+ dev->dev_attrib.max_unmap_block_desc_count = 1;
+ dev->dev_attrib.unmap_granularity =
q->limits.discard_granularity >> 9;
- dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment =
+ dev->dev_attrib.unmap_granularity_alignment =
q->limits.discard_alignment;
pr_debug("IBLOCK: BLOCK Discard support available,"
" disabled by default\n");
}
+ /*
+ * Enable write same emulation for IBLOCK and use 0xFFFF as
+ * the smaller WRITE_SAME(10) only has a two-byte block count.
+ */
+ dev->dev_attrib.max_write_same_len = 0xFFFF;
if (blk_queue_nonrot(q))
- dev->se_sub_dev->se_dev_attrib.is_nonrot = 1;
-
- return dev;
+ dev->dev_attrib.is_nonrot = 1;
+ return 0;
-failed:
- if (ib_dev->ibd_bio_set) {
- bioset_free(ib_dev->ibd_bio_set);
- ib_dev->ibd_bio_set = NULL;
- }
- ib_dev->ibd_bd = NULL;
- return ERR_PTR(ret);
+out_free_bioset:
+ bioset_free(ib_dev->ibd_bio_set);
+ ib_dev->ibd_bio_set = NULL;
+out:
+ return ret;
}
-static void iblock_free_device(void *p)
+static void iblock_free_device(struct se_device *dev)
{
- struct iblock_dev *ib_dev = p;
+ struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
if (ib_dev->ibd_bd != NULL)
blkdev_put(ib_dev->ibd_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL);
bdev_logical_block_size(bd)) - 1);
u32 block_size = bdev_logical_block_size(bd);
- if (block_size == dev->se_sub_dev->se_dev_attrib.block_size)
+ if (block_size == dev->dev_attrib.block_size)
return blocks_long;
switch (block_size) {
case 4096:
- switch (dev->se_sub_dev->se_dev_attrib.block_size) {
+ switch (dev->dev_attrib.block_size) {
case 2048:
blocks_long <<= 1;
break;
}
break;
case 2048:
- switch (dev->se_sub_dev->se_dev_attrib.block_size) {
+ switch (dev->dev_attrib.block_size) {
case 4096:
blocks_long >>= 1;
break;
}
break;
case 1024:
- switch (dev->se_sub_dev->se_dev_attrib.block_size) {
+ switch (dev->dev_attrib.block_size) {
case 4096:
blocks_long >>= 2;
break;
}
break;
case 512:
- switch (dev->se_sub_dev->se_dev_attrib.block_size) {
+ switch (dev->dev_attrib.block_size) {
case 4096:
blocks_long >>= 3;
break;
return blocks_long;
}
+static void iblock_complete_cmd(struct se_cmd *cmd)
+{
+ struct iblock_req *ibr = cmd->priv;
+ u8 status;
+
+ if (!atomic_dec_and_test(&ibr->pending))
+ return;
+
+ if (atomic_read(&ibr->ib_bio_err_cnt))
+ status = SAM_STAT_CHECK_CONDITION;
+ else
+ status = SAM_STAT_GOOD;
+
+ target_complete_cmd(cmd, status);
+ kfree(ibr);
+}
+
+static void iblock_bio_done(struct bio *bio, int err)
+{
+ struct se_cmd *cmd = bio->bi_private;
+ struct iblock_req *ibr = cmd->priv;
+
+ /*
+ * Set -EIO if !BIO_UPTODATE and the passed is still err=0
+ */
+ if (!test_bit(BIO_UPTODATE, &bio->bi_flags) && !err)
+ err = -EIO;
+
+ if (err != 0) {
+ pr_err("test_bit(BIO_UPTODATE) failed for bio: %p,"
+ " err: %d\n", bio, err);
+ /*
+ * Bump the ib_bio_err_cnt and release bio.
+ */
+ atomic_inc(&ibr->ib_bio_err_cnt);
+ smp_mb__after_atomic_inc();
+ }
+
+ bio_put(bio);
+
+ iblock_complete_cmd(cmd);
+}
+
+static struct bio *
+iblock_get_bio(struct se_cmd *cmd, sector_t lba, u32 sg_num)
+{
+ struct iblock_dev *ib_dev = IBLOCK_DEV(cmd->se_dev);
+ struct bio *bio;
+
+ /*
+ * Only allocate as many vector entries as the bio code allows us to,
+ * we'll loop later on until we have handled the whole request.
+ */
+ if (sg_num > BIO_MAX_PAGES)
+ sg_num = BIO_MAX_PAGES;
+
+ bio = bio_alloc_bioset(GFP_NOIO, sg_num, ib_dev->ibd_bio_set);
+ if (!bio) {
+ pr_err("Unable to allocate memory for bio\n");
+ return NULL;
+ }
+
+ bio->bi_bdev = ib_dev->ibd_bd;
+ bio->bi_private = cmd;
+ bio->bi_end_io = &iblock_bio_done;
+ bio->bi_sector = lba;
+
+ return bio;
+}
+
+static void iblock_submit_bios(struct bio_list *list, int rw)
+{
+ struct blk_plug plug;
+ struct bio *bio;
+
+ blk_start_plug(&plug);
+ while ((bio = bio_list_pop(list)))
+ submit_bio(rw, bio);
+ blk_finish_plug(&plug);
+}
+
static void iblock_end_io_flush(struct bio *bio, int err)
{
struct se_cmd *cmd = bio->bi_private;
pr_err("IBLOCK: cache flush failed: %d\n", err);
if (cmd) {
- if (err) {
- cmd->scsi_sense_reason =
- TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+ if (err)
target_complete_cmd(cmd, SAM_STAT_CHECK_CONDITION);
- } else {
+ else
target_complete_cmd(cmd, SAM_STAT_GOOD);
- }
}
bio_put(bio);
* Implement SYCHRONIZE CACHE. Note that we can't handle lba ranges and must
* always flush the whole cache.
*/
-static int iblock_execute_sync_cache(struct se_cmd *cmd)
+static sense_reason_t
+iblock_execute_sync_cache(struct se_cmd *cmd)
{
- struct iblock_dev *ib_dev = cmd->se_dev->dev_ptr;
+ struct iblock_dev *ib_dev = IBLOCK_DEV(cmd->se_dev);
int immed = (cmd->t_task_cdb[1] & 0x2);
struct bio *bio;
return 0;
}
-static int iblock_execute_unmap(struct se_cmd *cmd)
+static sense_reason_t
+iblock_execute_unmap(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
- struct iblock_dev *ibd = dev->dev_ptr;
+ struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
unsigned char *buf, *ptr = NULL;
sector_t lba;
int size;
u32 range;
- int ret = 0;
- int dl, bd_dl;
+ sense_reason_t ret = 0;
+ int dl, bd_dl, err;
if (cmd->data_length < 8) {
pr_warn("UNMAP parameter list length %u too small\n",
cmd->data_length);
- cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
- return -EINVAL;
+ return TCM_INVALID_PARAMETER_LIST;
}
buf = transport_kmap_data_sg(cmd);
+ if (!buf)
+ return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
dl = get_unaligned_be16(&buf[0]);
bd_dl = get_unaligned_be16(&buf[2]);
else
size = bd_dl;
- if (size / 16 > dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) {
- cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
- ret = -EINVAL;
+ if (size / 16 > dev->dev_attrib.max_unmap_block_desc_count) {
+ ret = TCM_INVALID_PARAMETER_LIST;
goto err;
}
pr_debug("UNMAP: Using lba: %llu and range: %u\n",
(unsigned long long)lba, range);
- if (range > dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count) {
- cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
- ret = -EINVAL;
+ if (range > dev->dev_attrib.max_unmap_lba_count) {
+ ret = TCM_INVALID_PARAMETER_LIST;
goto err;
}
if (lba + range > dev->transport->get_blocks(dev) + 1) {
- cmd->scsi_sense_reason = TCM_ADDRESS_OUT_OF_RANGE;
- ret = -EINVAL;
+ ret = TCM_ADDRESS_OUT_OF_RANGE;
goto err;
}
- ret = blkdev_issue_discard(ibd->ibd_bd, lba, range,
+ err = blkdev_issue_discard(ib_dev->ibd_bd, lba, range,
GFP_KERNEL, 0);
- if (ret < 0) {
+ if (err < 0) {
pr_err("blkdev_issue_discard() failed: %d\n",
- ret);
+ err);
+ ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
goto err;
}
return ret;
}
-static int iblock_execute_write_same(struct se_cmd *cmd)
+static sense_reason_t
+iblock_execute_write_same_unmap(struct se_cmd *cmd)
{
- struct iblock_dev *ibd = cmd->se_dev->dev_ptr;
- int ret;
-
- ret = blkdev_issue_discard(ibd->ibd_bd, cmd->t_task_lba,
- spc_get_write_same_sectors(cmd), GFP_KERNEL,
- 0);
- if (ret < 0) {
- pr_debug("blkdev_issue_discard() failed for WRITE_SAME\n");
- return ret;
+ struct iblock_dev *ib_dev = IBLOCK_DEV(cmd->se_dev);
+ int rc;
+
+ rc = blkdev_issue_discard(ib_dev->ibd_bd, cmd->t_task_lba,
+ spc_get_write_same_sectors(cmd), GFP_KERNEL, 0);
+ if (rc < 0) {
+ pr_warn("blkdev_issue_discard() failed: %d\n", rc);
+ return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
target_complete_cmd(cmd, GOOD);
return 0;
}
+static sense_reason_t
+iblock_execute_write_same(struct se_cmd *cmd)
+{
+ struct iblock_req *ibr;
+ struct scatterlist *sg;
+ struct bio *bio;
+ struct bio_list list;
+ sector_t block_lba = cmd->t_task_lba;
+ sector_t sectors = spc_get_write_same_sectors(cmd);
+
+ sg = &cmd->t_data_sg[0];
+
+ if (cmd->t_data_nents > 1 ||
+ sg->length != cmd->se_dev->dev_attrib.block_size) {
+ pr_err("WRITE_SAME: Illegal SGL t_data_nents: %u length: %u"
+ " block_size: %u\n", cmd->t_data_nents, sg->length,
+ cmd->se_dev->dev_attrib.block_size);
+ return TCM_INVALID_CDB_FIELD;
+ }
+
+ ibr = kzalloc(sizeof(struct iblock_req), GFP_KERNEL);
+ if (!ibr)
+ goto fail;
+ cmd->priv = ibr;
+
+ bio = iblock_get_bio(cmd, block_lba, 1);
+ if (!bio)
+ goto fail_free_ibr;
+
+ bio_list_init(&list);
+ bio_list_add(&list, bio);
+
+ atomic_set(&ibr->pending, 1);
+
+ while (sectors) {
+ while (bio_add_page(bio, sg_page(sg), sg->length, sg->offset)
+ != sg->length) {
+
+ bio = iblock_get_bio(cmd, block_lba, 1);
+ if (!bio)
+ goto fail_put_bios;
+
+ atomic_inc(&ibr->pending);
+ bio_list_add(&list, bio);
+ }
+
+ /* Always in 512 byte units for Linux/Block */
+ block_lba += sg->length >> IBLOCK_LBA_SHIFT;
+ sectors -= 1;
+ }
+
+ iblock_submit_bios(&list, WRITE);
+ return 0;
+
+fail_put_bios:
+ while ((bio = bio_list_pop(&list)))
+ bio_put(bio);
+fail_free_ibr:
+ kfree(ibr);
+fail:
+ return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+}
+
enum {
Opt_udev_path, Opt_readonly, Opt_force, Opt_err
};
{Opt_err, NULL}
};
-static ssize_t iblock_set_configfs_dev_params(struct se_hba *hba,
- struct se_subsystem_dev *se_dev,
- const char *page, ssize_t count)
+static ssize_t iblock_set_configfs_dev_params(struct se_device *dev,
+ const char *page, ssize_t count)
{
- struct iblock_dev *ib_dev = se_dev->se_dev_su_ptr;
+ struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
char *orig, *ptr, *arg_p, *opts;
substring_t args[MAX_OPT_ARGS];
int ret = 0, token;
return (!ret) ? count : ret;
}
-static ssize_t iblock_check_configfs_dev_params(
- struct se_hba *hba,
- struct se_subsystem_dev *se_dev)
+static ssize_t iblock_show_configfs_dev_params(struct se_device *dev, char *b)
{
- struct iblock_dev *ibd = se_dev->se_dev_su_ptr;
-
- if (!(ibd->ibd_flags & IBDF_HAS_UDEV_PATH)) {
- pr_err("Missing udev_path= parameters for IBLOCK\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-static ssize_t iblock_show_configfs_dev_params(
- struct se_hba *hba,
- struct se_subsystem_dev *se_dev,
- char *b)
-{
- struct iblock_dev *ibd = se_dev->se_dev_su_ptr;
- struct block_device *bd = ibd->ibd_bd;
+ struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
+ struct block_device *bd = ib_dev->ibd_bd;
char buf[BDEVNAME_SIZE];
ssize_t bl = 0;
if (bd)
bl += sprintf(b + bl, "iBlock device: %s",
bdevname(bd, buf));
- if (ibd->ibd_flags & IBDF_HAS_UDEV_PATH)
+ if (ib_dev->ibd_flags & IBDF_HAS_UDEV_PATH)
bl += sprintf(b + bl, " UDEV PATH: %s",
- ibd->ibd_udev_path);
- bl += sprintf(b + bl, " readonly: %d\n", ibd->ibd_readonly);
+ ib_dev->ibd_udev_path);
+ bl += sprintf(b + bl, " readonly: %d\n", ib_dev->ibd_readonly);
bl += sprintf(b + bl, " ");
if (bd) {
bl += sprintf(b + bl, "Major: %d Minor: %d %s\n",
MAJOR(bd->bd_dev), MINOR(bd->bd_dev), (!bd->bd_contains) ?
- "" : (bd->bd_holder == ibd) ?
+ "" : (bd->bd_holder == ib_dev) ?
"CLAIMED: IBLOCK" : "CLAIMED: OS");
} else {
bl += sprintf(b + bl, "Major: 0 Minor: 0\n");
return bl;
}
-static void iblock_complete_cmd(struct se_cmd *cmd)
-{
- struct iblock_req *ibr = cmd->priv;
- u8 status;
-
- if (!atomic_dec_and_test(&ibr->pending))
- return;
-
- if (atomic_read(&ibr->ib_bio_err_cnt))
- status = SAM_STAT_CHECK_CONDITION;
- else
- status = SAM_STAT_GOOD;
-
- target_complete_cmd(cmd, status);
- kfree(ibr);
-}
-
-static struct bio *
-iblock_get_bio(struct se_cmd *cmd, sector_t lba, u32 sg_num)
-{
- struct iblock_dev *ib_dev = cmd->se_dev->dev_ptr;
- struct bio *bio;
-
- /*
- * Only allocate as many vector entries as the bio code allows us to,
- * we'll loop later on until we have handled the whole request.
- */
- if (sg_num > BIO_MAX_PAGES)
- sg_num = BIO_MAX_PAGES;
-
- bio = bio_alloc_bioset(GFP_NOIO, sg_num, ib_dev->ibd_bio_set);
- if (!bio) {
- pr_err("Unable to allocate memory for bio\n");
- return NULL;
- }
-
- bio->bi_bdev = ib_dev->ibd_bd;
- bio->bi_private = cmd;
- bio->bi_end_io = &iblock_bio_done;
- bio->bi_sector = lba;
- return bio;
-}
-
-static void iblock_submit_bios(struct bio_list *list, int rw)
-{
- struct blk_plug plug;
- struct bio *bio;
-
- blk_start_plug(&plug);
- while ((bio = bio_list_pop(list)))
- submit_bio(rw, bio);
- blk_finish_plug(&plug);
-}
-
-static int iblock_execute_rw(struct se_cmd *cmd)
+static sense_reason_t
+iblock_execute_rw(struct se_cmd *cmd)
{
struct scatterlist *sgl = cmd->t_data_sg;
u32 sgl_nents = cmd->t_data_nents;
* Force data to disk if we pretend to not have a volatile
* write cache, or the initiator set the Force Unit Access bit.
*/
- if (dev->se_sub_dev->se_dev_attrib.emulate_write_cache == 0 ||
- (dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0 &&
+ if (dev->dev_attrib.emulate_write_cache == 0 ||
+ (dev->dev_attrib.emulate_fua_write > 0 &&
(cmd->se_cmd_flags & SCF_FUA)))
rw = WRITE_FUA;
else
* Convert the blocksize advertised to the initiator to the 512 byte
* units unconditionally used by the Linux block layer.
*/
- if (dev->se_sub_dev->se_dev_attrib.block_size == 4096)
+ if (dev->dev_attrib.block_size == 4096)
block_lba = (cmd->t_task_lba << 3);
- else if (dev->se_sub_dev->se_dev_attrib.block_size == 2048)
+ else if (dev->dev_attrib.block_size == 2048)
block_lba = (cmd->t_task_lba << 2);
- else if (dev->se_sub_dev->se_dev_attrib.block_size == 1024)
+ else if (dev->dev_attrib.block_size == 1024)
block_lba = (cmd->t_task_lba << 1);
- else if (dev->se_sub_dev->se_dev_attrib.block_size == 512)
+ else if (dev->dev_attrib.block_size == 512)
block_lba = cmd->t_task_lba;
else {
pr_err("Unsupported SCSI -> BLOCK LBA conversion:"
- " %u\n", dev->se_sub_dev->se_dev_attrib.block_size);
- cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
- return -ENOSYS;
+ " %u\n", dev->dev_attrib.block_size);
+ return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
ibr = kzalloc(sizeof(struct iblock_req), GFP_KERNEL);
bio_put(bio);
fail_free_ibr:
kfree(ibr);
- cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
fail:
- return -ENOMEM;
-}
-
-static u32 iblock_get_device_rev(struct se_device *dev)
-{
- return SCSI_SPC_2; /* Returns SPC-3 in Initiator Data */
-}
-
-static u32 iblock_get_device_type(struct se_device *dev)
-{
- return TYPE_DISK;
+ return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
static sector_t iblock_get_blocks(struct se_device *dev)
{
- struct iblock_dev *ibd = dev->dev_ptr;
- struct block_device *bd = ibd->ibd_bd;
+ struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
+ struct block_device *bd = ib_dev->ibd_bd;
struct request_queue *q = bdev_get_queue(bd);
return iblock_emulate_read_cap_with_block_size(dev, bd, q);
}
-static void iblock_bio_done(struct bio *bio, int err)
-{
- struct se_cmd *cmd = bio->bi_private;
- struct iblock_req *ibr = cmd->priv;
-
- /*
- * Set -EIO if !BIO_UPTODATE and the passed is still err=0
- */
- if (!test_bit(BIO_UPTODATE, &bio->bi_flags) && !err)
- err = -EIO;
-
- if (err != 0) {
- pr_err("test_bit(BIO_UPTODATE) failed for bio: %p,"
- " err: %d\n", bio, err);
- /*
- * Bump the ib_bio_err_cnt and release bio.
- */
- atomic_inc(&ibr->ib_bio_err_cnt);
- smp_mb__after_atomic_inc();
- }
-
- bio_put(bio);
-
- iblock_complete_cmd(cmd);
-}
-
-static struct spc_ops iblock_spc_ops = {
+static struct sbc_ops iblock_sbc_ops = {
.execute_rw = iblock_execute_rw,
.execute_sync_cache = iblock_execute_sync_cache,
.execute_write_same = iblock_execute_write_same,
+ .execute_write_same_unmap = iblock_execute_write_same_unmap,
.execute_unmap = iblock_execute_unmap,
};
-static int iblock_parse_cdb(struct se_cmd *cmd)
+static sense_reason_t
+iblock_parse_cdb(struct se_cmd *cmd)
{
- return sbc_parse_cdb(cmd, &iblock_spc_ops);
+ return sbc_parse_cdb(cmd, &iblock_sbc_ops);
}
static struct se_subsystem_api iblock_template = {
.name = "iblock",
+ .inquiry_prod = "IBLOCK",
+ .inquiry_rev = IBLOCK_VERSION,
.owner = THIS_MODULE,
.transport_type = TRANSPORT_PLUGIN_VHBA_PDEV,
.attach_hba = iblock_attach_hba,
.detach_hba = iblock_detach_hba,
- .allocate_virtdevice = iblock_allocate_virtdevice,
- .create_virtdevice = iblock_create_virtdevice,
+ .alloc_device = iblock_alloc_device,
+ .configure_device = iblock_configure_device,
.free_device = iblock_free_device,
.parse_cdb = iblock_parse_cdb,
- .check_configfs_dev_params = iblock_check_configfs_dev_params,
.set_configfs_dev_params = iblock_set_configfs_dev_params,
.show_configfs_dev_params = iblock_show_configfs_dev_params,
- .get_device_rev = iblock_get_device_rev,
- .get_device_type = iblock_get_device_type,
+ .get_device_type = sbc_get_device_type,
.get_blocks = iblock_get_blocks,
};
projects / firefly-linux-kernel-4.4.55.git / blobdiff