[SCSI] fc_transport: add target driver support

This adds minimum target driver support like the srp transport does:

- fc_remote_port_{rolechg,delete} calls
scsi_tgt_it_nexus_{create,destroy} for target drivers.

- add callbacks to notify target drivers of the nexus and tmf
operation results to fc_function_template.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/scsi/scsi_transport_fc_internal.h b/drivers/scsi/scsi_transport_fc_internal.h
new file mode 100644
index 000000000000..e7bfbe751c1f
--- /dev/null
+++ b/drivers/scsi/scsi_transport_fc_internal.h
@@ -0,0 +1,26 @@
+#include <scsi/scsi_tgt.h>
+
+#ifdef CONFIG_SCSI_FC_TGT_ATTRS
+static inline int fc_tgt_it_nexus_create(struct Scsi_Host *shost, u64 itn_id,
+					 char *initiator)
+{
+	return scsi_tgt_it_nexus_create(shost, itn_id, initiator);
+}
+
+static inline int fc_tgt_it_nexus_destroy(struct Scsi_Host *shost, u64 itn_id)
+{
+	return scsi_tgt_it_nexus_destroy(shost, itn_id);
+}
+#else
+static inline int fc_tgt_it_nexus_create(struct Scsi_Host *shost, u64 itn_id,
+					 char *initiator)
+{
+	return 0;
+}
+
+static inline int fc_tgt_it_nexus_destroy(struct Scsi_Host *shost, u64 itn_id)
+{
+	return 0;
+}
+
+#endif