1 files changed, 36 insertions, 7 deletions

diff --git a/drivers/target/tcm_fc/tfc_io.c b/drivers/target/tcm_fc/tfc_io.c
index 071a505f98f..97b486c3dda 100644
--- a/drivers/target/tcm_fc/tfc_io.c
+++ b/drivers/target/tcm_fc/tfc_io.c
@@ -28,7 +28,6 @@
 
 #include <linux/module.h>
 #include <linux/moduleparam.h>
-#include <generated/utsrelease.h>
 #include <linux/utsname.h>
 #include <linux/init.h>
 #include <linux/slab.h>
@@ -83,6 +82,10 @@ int ft_queue_data_in(struct se_cmd *se_cmd)
 
 	if (cmd->aborted)
 		return 0;
+
+	if (se_cmd->scsi_status == SAM_STAT_TASK_SET_FULL)
+		goto queue_status;
+
 	ep = fc_seq_exch(cmd->seq);
 	lport = ep->lp;
 	cmd->seq = lport->tt.seq_start_next(cmd->seq);
@@ -104,6 +107,13 @@ int ft_queue_data_in(struct se_cmd *se_cmd)
 	use_sg = !(remaining % 4);
 
 	while (remaining) {
+		struct fc_seq *seq = cmd->seq;
+
+		if (!seq) {
+			pr_debug("%s: Command aborted, xid 0x%x\n",
+				 __func__, ep->xid);
+			break;
+		}
 		if (!mem_len) {
 			sg = sg_next(sg);
 			mem_len = min((size_t)sg->length, remaining);
@@ -170,19 +180,35 @@ int ft_queue_data_in(struct se_cmd *se_cmd)
 			f_ctl |= FC_FC_END_SEQ;
 		fc_fill_fc_hdr(fp, FC_RCTL_DD_SOL_DATA, ep->did, ep->sid,
 			       FC_TYPE_FCP, f_ctl, fh_off);
-		error = lport->tt.seq_send(lport, cmd->seq, fp);
+		error = lport->tt.seq_send(lport, seq, fp);
 		if (error) {
-			/* XXX For now, initiator will retry */
-			pr_err_ratelimited("%s: Failed to send frame %p, "
+			pr_info_ratelimited("%s: Failed to send frame %p, "
 						"xid <0x%x>, remaining %zu, "
 						"lso_max <0x%x>\n",
 						__func__, fp, ep->xid,
 						remaining, lport->lso_max);
+			/*
+			 * Go ahead and set TASK_SET_FULL status ignoring the
+			 * rest of the DataIN, and immediately attempt to
+			 * send the response via ft_queue_status() in order
+			 * to notify the initiator that it should reduce it's
+			 * per LUN queue_depth.
+			 */
+			se_cmd->scsi_status = SAM_STAT_TASK_SET_FULL;
+			break;
 		}
 	}
+queue_status:
 	return ft_queue_status(se_cmd);
 }
 
+static void ft_execute_work(struct work_struct *work)
+{
+	struct ft_cmd *cmd = container_of(work, struct ft_cmd, work);
+
+	target_execute_cmd(&cmd->se_cmd);
+}
+
 /*
  * Receive write data frame.
  */
@@ -307,8 +333,10 @@ void ft_recv_write_data(struct ft_cmd *cmd, struct fc_frame *fp)
 		cmd->write_data_len += tlen;
 	}
 last_frame:
-	if (cmd->write_data_len == se_cmd->data_length)
-		transport_generic_handle_data(se_cmd);
+	if (cmd->write_data_len == se_cmd->data_length) {
+		INIT_WORK(&cmd->work, ft_execute_work);
+		queue_work(cmd->sess->tport->tpg->workqueue, &cmd->work);
+	}
 drop:
 	fc_frame_free(fp);
 }
@@ -319,11 +347,12 @@ drop:
  */
 void ft_invl_hw_context(struct ft_cmd *cmd)
 {
-	struct fc_seq *seq = cmd->seq;
+	struct fc_seq *seq;
 	struct fc_exch *ep = NULL;
 	struct fc_lport *lport = NULL;
 
 	BUG_ON(!cmd);
+	seq = cmd->seq;
 
 	/* Cleanup the DDP context in HW if DDP was setup */
 	if (cmd->was_ddp_setup && seq) {