target: Allow target_submit_tmr interrupt context + pass ABORT_TASK tag

This patch allows target_submit_tmr() to pass gfp_t for se_cmd->se_tmr_req
allocation, and also set up se_cmd->se_tmr_req->ref_task_tag for passed
tag with TMR_ABORT_TASK.

Also update tcm_fc(fcoe) parameter usgae and add ref_task_tag FIXME
for TMR_ABORT_TASK usage,

Cc: Andy Grover <agrover@redhat.com>
Cc: Kiran Patil <kiran.patil@intel.com>
Cc: Arun Easi <arun.easi@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index ca1a40d..3533ad6 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1713,6 +1713,8 @@
  * @unpacked_lun: unpacked LUN to reference for struct se_lun
  * @fabric_context: fabric context for TMR req
  * @tm_type: Type of TM request
+ * @gfp: gfp type for caller
+ * @tag: referenced task tag for TMR_ABORT_TASK
  * @flags: submit cmd flags
  *
  * Callable from all contexts.
@@ -1720,7 +1722,8 @@
 
 int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
 		unsigned char *sense, u32 unpacked_lun,
-		void *fabric_tmr_ptr, unsigned char tm_type, int flags)
+		void *fabric_tmr_ptr, unsigned char tm_type,
+		gfp_t gfp, unsigned int tag, int flags)
 {
 	struct se_portal_group *se_tpg;
 	int ret;
@@ -1734,10 +1737,13 @@
 	 * FIXME: Currently expect caller to handle se_cmd->se_tmr_req
 	 * allocation failure.
 	 */
-	ret = core_tmr_alloc_req(se_cmd, fabric_tmr_ptr, tm_type, GFP_KERNEL);
+	ret = core_tmr_alloc_req(se_cmd, fabric_tmr_ptr, tm_type, gfp);
 	if (ret < 0)
 		return -ENOMEM;
 
+	if (tm_type == TMR_ABORT_TASK)
+		se_cmd->se_tmr_req->ref_task_tag = tag;
+
 	/* See target_submit_cmd for commentary */
 	target_get_sess_cmd(se_sess, se_cmd, (flags & TARGET_SCF_ACK_KREF));