[SCSI] libfc, tcm_fc: add ddp_targ() to libfc function template to supprot FCoE DDP in target mode

The fcoe driver can implement ddp_targ() similarly to ddp_setup() when fcoe
stack works with existing target frame, e.g., tcm, where the ddp_targ() would
eventually point to the underlying hardware driver's implementation of
ndo_fcoe_ddp_targ() through net_device_ops. This new API sets up DDP context
for target appropriately by setting required bits for DDP context.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Kiran Patil <kiran.patil@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c
index b2a106729d49..b9cea59d43b4 100644
--- a/drivers/target/tcm_fc/tfc_cmd.c
+++ b/drivers/target/tcm_fc/tfc_cmd.c
@@ -266,8 +266,9 @@ int ft_write_pending(struct se_cmd *se_cmd)
                                 cmd->sg_cnt =
                                         T_TASK(se_cmd)->t_tasks_sg_chained_no;
                         }
-                        if (cmd->sg && lport->tt.ddp_setup(lport, ep->xid,
-                                                    cmd->sg, cmd->sg_cnt))
+                        if (cmd->sg && lport->tt.ddp_target(lport, ep->xid,
+                                                            cmd->sg,
+                                                            cmd->sg_cnt))
                                 cmd->was_ddp_setup = 1;
                 }
         }