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>

2 files changed, 10 insertions, 3 deletions

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index ca1a40dc4888..3533ad644286 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1713,6 +1713,8 @@ static void target_complete_tmr_failure(struct work_struct *work)
  * @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 @@ static void target_complete_tmr_failure(struct work_struct *work)
 
 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 @@ int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
          * 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));
 
diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c
index be3319af5d8b..17ffc82274a4 100644
--- a/drivers/target/tcm_fc/tfc_cmd.c
+++ b/drivers/target/tcm_fc/tfc_cmd.c
@@ -385,9 +385,10 @@ static void ft_send_tm(struct ft_cmd *cmd)
                 return;
         }
 
+        /* FIXME: Add referenced task tag for ABORT_TASK */
         rc = target_submit_tmr(&cmd->se_cmd, cmd->sess->se_sess,
                 &cmd->ft_sense_buffer[0], scsilun_to_int(&fcp->fc_lun),
-                cmd, tm_func, 0);
+                cmd, tm_func, GFP_KERNEL, 0, 0);
         if (rc < 0)
                 ft_send_resp_code_and_free(cmd, FCP_TMF_FAILED);
 }