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scst_local: Support LUN numbers >= 16384

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Add support for 32-bit LUN numbers. As soon as the patches that add
64-bit LUN support are upstream this patch will also make 64-bit
LUN support available in scst_local.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@5588 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2014-06-11 21:00:16 +00:00
parent 3f2485ede0
commit a2feffdcfe
1 changed files with 19 additions and 15 deletions
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34
scst_local/scst_local.c
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@@ -831,7 +831,7 @@ static int scst_local_abort(struct scsi_cmnd *SCpnt)
static int scst_local_device_reset(struct scsi_cmnd *SCpnt)
{
struct scst_local_sess *sess;
__be16 lun;
struct scsi_lun lun;
int ret;
DECLARE_COMPLETION_ONSTACK(dev_reset_completion);
@@ -839,10 +839,11 @@ static int scst_local_device_reset(struct scsi_cmnd *SCpnt)
sess = to_scst_lcl_sess(scsi_get_device(SCpnt->device->host));
lun = cpu_to_be16(SCpnt->device->lun);
int_to_scsilun(SCpnt->device->lun, &lun);
ret = scst_rx_mgmt_fn_lun(sess->scst_sess, SCST_LUN_RESET,
&lun, sizeof(lun), false, &dev_reset_completion);
lun.scsi_lun, sizeof(lun), false,
&dev_reset_completion);
/* Now wait for the completion ... */
wait_for_completion_interruptible(&dev_reset_completion);
@@ -860,7 +861,7 @@ static int scst_local_device_reset(struct scsi_cmnd *SCpnt)
static int scst_local_target_reset(struct scsi_cmnd *SCpnt)
{
struct scst_local_sess *sess;
__be16 lun;
struct scsi_lun lun;
int ret;
DECLARE_COMPLETION_ONSTACK(dev_reset_completion);
@@ -868,10 +869,11 @@ static int scst_local_target_reset(struct scsi_cmnd *SCpnt)
sess = to_scst_lcl_sess(scsi_get_device(SCpnt->device->host));
lun = cpu_to_be16(SCpnt->device->lun);
int_to_scsilun(SCpnt->device->lun, &lun);
ret = scst_rx_mgmt_fn_lun(sess->scst_sess, SCST_TARGET_RESET,
&lun, sizeof(lun), false, &dev_reset_completion);
lun.scsi_lun, sizeof(lun), false,
&dev_reset_completion);
/* Now wait for the completion ... */
wait_for_completion_interruptible(&dev_reset_completion);
@@ -953,13 +955,14 @@ static int scst_local_queuecommand_lck(struct scsi_cmnd *SCpnt,
struct scst_local_sess *sess;
struct scatterlist *sgl = NULL;
int sgl_count = 0;
__be16 lun;
struct scsi_lun lun;
struct scst_cmd *scst_cmd = NULL;
scst_data_direction dir;
TRACE_ENTRY();
TRACE_DBG("lun %d, cmd: 0x%02X", SCpnt->device->lun, SCpnt->cmnd[0]);
TRACE_DBG("lun %lld, cmd: 0x%02X", (u64)SCpnt->device->lun,
SCpnt->cmnd[0]);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 37)
/*
@@ -1002,9 +1005,9 @@ static int scst_local_queuecommand_lck(struct scsi_cmnd *SCpnt,
* get into mem alloc deadlock when mounting file systems over
* our devices.
*/
lun = cpu_to_be16(SCpnt->device->lun);
scst_cmd = scst_rx_cmd(sess->scst_sess, (const uint8_t *)&lun,
sizeof(lun), SCpnt->cmnd, SCpnt->cmd_len, true);
int_to_scsilun(SCpnt->device->lun, &lun);
scst_cmd = scst_rx_cmd(sess->scst_sess, lun.scsi_lun, sizeof(lun),
SCpnt->cmnd, SCpnt->cmd_len, true);
if (!scst_cmd) {
PRINT_ERROR("%s", "scst_rx_cmd() failed");
return SCSI_MLQUEUE_HOST_BUSY;
@@ -1148,14 +1151,15 @@ static int scst_local_get_max_queue_depth(struct scsi_device *sdev)
{
int res;
struct scst_local_sess *sess;
__be16 lun;
struct scsi_lun lun;
TRACE_ENTRY();
sess = to_scst_lcl_sess(scsi_get_device(sdev->host));
lun = cpu_to_be16(sdev->lun);
int_to_scsilun(sdev->lun, &lun);
res = scst_get_max_lun_commands(sess->scst_sess,
scst_unpack_lun((const uint8_t *)&lun, sizeof(lun)));
scst_unpack_lun(lun.scsi_lun,
sizeof(lun)));
TRACE_EXIT_RES(res);
return res;
@@ -1619,7 +1623,7 @@ static int scst_local_driver_probe(struct device *dev)
sess->shost = hpnt;
hpnt->max_id = 0; /* Don't want more than one id */
hpnt->max_lun = 0xFFFF;
hpnt->max_lun = -1ll;
/*
* Because of a change in the size of this field at 2.6.26