[SCSI] add srp transport class

This adds srp transport class that works with ib_srp and ibmvscsi.

It creates only /sys/class/{srp_host,srp_remote_ports} and
srp_remote_ports has only "port_id" attribute.

viola:/sys/class/srp_remote_ports/port-0:1# ls
device  port_id  subsystem  uevent
viola:/sys/class/srp_remote_ports/port-0:1# cat port_id
4c:49:4e:55:58:20:56:49:4f:00:00:00:00:00:00:00

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/include/scsi/scsi_transport_srp.h b/include/scsi/scsi_transport_srp.h
new file mode 100644
index 000000000000..adbfca402a69
--- /dev/null
+++ b/include/scsi/scsi_transport_srp.h
@@ -0,0 +1,32 @@
+#ifndef SCSI_TRANSPORT_SRP_H
+#define SCSI_TRANSPORT_SRP_H
+
+#include <linux/transport_class.h>
+#include <linux/types.h>
+#include <linux/mutex.h>
+
+struct srp_rport_identifiers {
+	u8 port_id[16];
+};
+
+struct srp_rport {
+	struct device dev;
+
+	u8 port_id[16];
+};
+
+struct srp_function_template {
+	/* later */
+};
+
+extern struct scsi_transport_template *
+srp_attach_transport(struct srp_function_template *);
+extern void srp_release_transport(struct scsi_transport_template *);
+
+extern struct srp_rport *srp_rport_add(struct Scsi_Host *,
+				       struct srp_rport_identifiers *);
+extern void srp_rport_del(struct srp_rport *);
+
+extern void srp_remove_host(struct Scsi_Host *);
+
+#endif