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authorBart Van Assche <bvanassche@acm.org>2019-01-25 21:34:47 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2019-02-05 05:28:48 +0300
commit94ebb47160085343ecaaeab90fa7ffbb86030613 (patch)
tree2c797cc30c77dc78d8a4b4a312b9821ffc5fb7cd /drivers/target
parent83f85b8ec305be9d65284de2921d8eeb6c7fcf12 (diff)
downloadlinux-94ebb47160085343ecaaeab90fa7ffbb86030613.tar.xz
scsi: target/core: Add target_send_busy()
Introduce a function that sends the SCSI status "BUSY" back to the initiator. The next patch will add a call to this function in the srpt target driver. Reviewed-by: Hannes Reinecke <hare@suse.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Mike Christie <mchristi@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_transport.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 6471ede00336..e3f7e21e6614 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -3246,6 +3246,22 @@ transport_send_check_condition_and_sense(struct se_cmd *cmd,
}
EXPORT_SYMBOL(transport_send_check_condition_and_sense);
+/**
+ * target_send_busy - Send SCSI BUSY status back to the initiator
+ * @cmd: SCSI command for which to send a BUSY reply.
+ *
+ * Note: Only call this function if target_submit_cmd*() failed.
+ */
+int target_send_busy(struct se_cmd *cmd)
+{
+ WARN_ON_ONCE(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB);
+
+ cmd->scsi_status = SAM_STAT_BUSY;
+ trace_target_cmd_complete(cmd);
+ return cmd->se_tfo->queue_status(cmd);
+}
+EXPORT_SYMBOL(target_send_busy);
+
static void target_tmr_work(struct work_struct *work)
{
struct se_cmd *cmd = container_of(work, struct se_cmd, work);