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-rw-r--r--include/scsi/scsi_transport_fc.h31
1 files changed, 29 insertions, 2 deletions
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index 4496b32972e..319ff7a60df 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -28,6 +28,7 @@
#define SCSI_TRANSPORT_FC_H
#include <linux/config.h>
+#include <scsi/scsi.h>
struct scsi_transport_template;
@@ -429,6 +430,34 @@ struct fc_function_template {
};
+/**
+ * fc_remote_port_chkready - called to validate the remote port state
+ * prior to initiating io to the port.
+ *
+ * Returns a scsi result code that can be returned by the LLDD.
+ *
+ * @rport: remote port to be checked
+ **/
+static inline int
+fc_remote_port_chkready(struct fc_rport *rport)
+{
+ int result;
+
+ switch (rport->port_state) {
+ case FC_PORTSTATE_ONLINE:
+ result = 0;
+ break;
+ case FC_PORTSTATE_BLOCKED:
+ result = DID_BUS_BUSY << 16;
+ break;
+ default:
+ result = DID_NO_CONNECT << 16;
+ break;
+ }
+ return result;
+}
+
+
struct scsi_transport_template *fc_attach_transport(
struct fc_function_template *);
void fc_release_transport(struct scsi_transport_template *);
@@ -437,8 +466,6 @@ struct fc_rport *fc_remote_port_add(struct Scsi_Host *shost,
int channel, struct fc_rport_identifiers *ids);
void fc_remote_port_delete(struct fc_rport *rport);
void fc_remote_port_rolechg(struct fc_rport *rport, u32 roles);
-int fc_remote_port_block(struct fc_rport *rport);
-void fc_remote_port_unblock(struct fc_rport *rport);
int scsi_is_fc_rport(const struct device *);
static inline u64 wwn_to_u64(u8 *wwn)