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iscsi: finish the task if the lun is NULL immediately in iscsi layer.

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This patch make the function spdk_scsi_task_process_null_lun() as public and
finish the task immediately once we get task in iscsi layer.

Change-Id: I4ada027d3a324dce8ef0d0f7706dbc14184ead96
Signed-off-by: Cunyin Chang <cunyin.chang@intel.com>
This commit is contained in:
Cunyin Chang 2017-02-26 20:41:06 +08:00 committed by Jim Harris
parent c932e122b7
commit b21fd06463
5 changed files with 18 additions and 11 deletions
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1
include/spdk/scsi.h
View File

@ -293,6 +293,7 @@ void spdk_scsi_task_build_sense_data(struct spdk_scsi_task *task, int sk, int as
int ascq);
void spdk_scsi_task_set_status(struct spdk_scsi_task *task, int sc, int sk, int asc,
int ascq);
void spdk_scsi_task_process_null_lun(struct spdk_scsi_task *task);
static inline struct spdk_scsi_task *
spdk_scsi_task_get_primary(struct spdk_scsi_task *task)

6
lib/iscsi/iscsi.c
View File

@ -2956,6 +2956,12 @@ spdk_iscsi_op_scsi(struct spdk_iscsi_conn *conn, struct spdk_iscsi_pdu *pdu)
task->scsi.initiator_port = conn->initiator_port;
task->scsi.parent = NULL;
if (task->scsi.lun == NULL) {
spdk_scsi_task_process_null_lun(&task->scsi);
process_task_completion(conn, task);
return 0;
}
/* no bi-directional support */
if (R_bit) {
return spdk_iscsi_op_scsi_read(conn, task);

11
lib/scsi/lun.c
View File

@ -179,13 +179,14 @@ spdk_scsi_lun_task_mgmt_execute(struct spdk_scsi_task *task)
return rc;
}
static void
complete_task_with_no_lun(struct spdk_scsi_task *task)
void
spdk_scsi_task_process_null_lun(struct spdk_scsi_task *task)
{
uint8_t buffer[36];
uint32_t allocation_len;
uint32_t data_len;
task->length = task->transfer_len;
if (task->cdb[0] == SPDK_SPC_INQUIRY) {
/*
* SPC-4 states that INQUIRY commands to an unsupported LUN
@ -213,17 +214,11 @@ complete_task_with_no_lun(struct spdk_scsi_task *task)
SPDK_SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
task->data_transferred = 0;
}
spdk_scsi_lun_complete_task(NULL, task);
}
int
spdk_scsi_lun_append_task(struct spdk_scsi_lun *lun, struct spdk_scsi_task *task)
{
if (lun == NULL) {
complete_task_with_no_lun(task);
return -1;
}
TAILQ_INSERT_TAIL(&lun->pending_tasks, task, scsi_link);
return 0;
}

5
test/lib/iscsi/common.c
View File

@ -59,6 +59,11 @@ spdk_get_pdu(void)
return pdu;
}
void
spdk_scsi_task_process_null_lun(struct spdk_scsi_task *task)
{
}
void
spdk_scsi_dev_queue_task(struct spdk_scsi_dev *dev,
struct spdk_scsi_task *task)

6
test/lib/scsi/lun/lun_ut.c
View File

@ -443,7 +443,7 @@ lun_append_task_null_lun_task_cdb_spc_inquiry(void)
task->cdb[4] = 0xFF;
task->lun = NULL;
spdk_scsi_lun_append_task(NULL, task);
spdk_scsi_task_process_null_lun(task);
CU_ASSERT_EQUAL(task->status, SPDK_SCSI_STATUS_GOOD);
@ -466,7 +466,7 @@ lun_append_task_null_lun_alloc_len_lt_4096(void)
task->cdb[4] = 0;
/* alloc_len is set to a minimal value of 4096
* Hence, rbuf of size 4096 is allocated*/
spdk_scsi_lun_append_task(NULL, task);
spdk_scsi_task_process_null_lun(task);
CU_ASSERT_EQUAL(task->status, SPDK_SCSI_STATUS_GOOD);
@ -485,7 +485,7 @@ lun_append_task_null_lun_not_supported(void)
task->cdb = cdb;
task->lun = NULL;
spdk_scsi_lun_append_task(NULL, task);
spdk_scsi_task_process_null_lun(task);
CU_ASSERT_EQUAL(task->status, SPDK_SCSI_STATUS_CHECK_CONDITION);
/* LUN not supported; task's data transferred should be 0 */