3 files changed, 101 insertions, 5 deletions

diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 80b2e93c2936..b49e725be039 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -42,9 +42,11 @@ enum scsi_device_state {
                                  * originate in the mid-layer) */
         SDEV_OFFLINE,           /* Device offlined (by error handling or
                                  * user request */
-        SDEV_BLOCK,             /* Device blocked by scsi lld.  No scsi 
-                                 * commands from user or midlayer should be issued
-                                 * to the scsi lld. */
+        SDEV_BLOCK,             /* Device blocked by scsi lld.  No
+                                 * scsi commands from user or midlayer
+                                 * should be issued to the scsi
+                                 * lld. */
+        SDEV_CREATED_BLOCK,     /* same as above but for created devices */
 };
 
 enum scsi_device_event {
@@ -384,10 +386,23 @@ static inline unsigned int sdev_id(struct scsi_device *sdev)
 #define scmd_id(scmd) sdev_id((scmd)->device)
 #define scmd_channel(scmd) sdev_channel((scmd)->device)
 
+/*
+ * checks for positions of the SCSI state machine
+ */
 static inline int scsi_device_online(struct scsi_device *sdev)
 {
         return sdev->sdev_state != SDEV_OFFLINE;
 }
+static inline int scsi_device_blocked(struct scsi_device *sdev)
+{
+        return sdev->sdev_state == SDEV_BLOCK ||
+                sdev->sdev_state == SDEV_CREATED_BLOCK;
+}
+static inline int scsi_device_created(struct scsi_device *sdev)
+{
+        return sdev->sdev_state == SDEV_CREATED ||
+                sdev->sdev_state == SDEV_CREATED_BLOCK;
+}
 
 /* accessor functions for the SCSI parameters */
 static inline int scsi_device_sync(struct scsi_device *sdev)
diff --git a/include/scsi/scsi_netlink.h b/include/scsi/scsi_netlink.h
index 8c1470cc8209..536752c40d41 100644
--- a/include/scsi/scsi_netlink.h
+++ b/include/scsi/scsi_netlink.h
@@ -22,6 +22,9 @@
 #ifndef SCSI_NETLINK_H
 #define SCSI_NETLINK_H
 
+#include <linux/netlink.h>
+
+
 /*
  * This file intended to be included by both kernel and user space
  */
@@ -55,7 +58,41 @@ struct scsi_nl_hdr {
 #define SCSI_NL_TRANSPORT_FC                    1
 #define SCSI_NL_MAX_TRANSPORTS                  2
 
-/* scsi_nl_hdr->msgtype values are defined in each transport */
+/* Transport-based scsi_nl_hdr->msgtype values are defined in each transport */
+
+/*
+ * GENERIC SCSI scsi_nl_hdr->msgtype Values
+ */
+        /* kernel -> user */
+#define SCSI_NL_SHOST_VENDOR                    0x0001
+        /* user -> kernel */
+/* SCSI_NL_SHOST_VENDOR msgtype is kernel->user and user->kernel */
+
+
+/*
+ * Message Structures :
+ */
+
+/* macro to round up message lengths to 8byte boundary */
+#define SCSI_NL_MSGALIGN(len)           (((len) + 7) & ~7)
+
+
+/*
+ * SCSI HOST Vendor Unique messages :
+ *   SCSI_NL_SHOST_VENDOR
+ *
+ * Note: The Vendor Unique message payload will begin directly after
+ *       this structure, with the length of the payload per vmsg_datalen.
+ *
+ * Note: When specifying vendor_id, be sure to read the Vendor Type and ID
+ *   formatting requirements specified below
+ */
+struct scsi_nl_host_vendor_msg {
+        struct scsi_nl_hdr snlh;                /* must be 1st element ! */
+        uint64_t vendor_id;
+        uint16_t host_no;
+        uint16_t vmsg_datalen;
+} __attribute__((aligned(sizeof(uint64_t))));
 
 
 /*
@@ -83,5 +120,28 @@ struct scsi_nl_hdr {
         }
 
 
+#ifdef __KERNEL__
+
+#include <scsi/scsi_host.h>
+
+/* Exported Kernel Interfaces */
+int scsi_nl_add_transport(u8 tport,
+         int (*msg_handler)(struct sk_buff *),
+        void (*event_handler)(struct notifier_block *, unsigned long, void *));
+void scsi_nl_remove_transport(u8 tport);
+
+int scsi_nl_add_driver(u64 vendor_id, struct scsi_host_template *hostt,
+        int (*nlmsg_handler)(struct Scsi_Host *shost, void *payload,
+                                 u32 len, u32 pid),
+        void (*nlevt_handler)(struct notifier_block *nb,
+                                 unsigned long event, void *notify_ptr));
+void scsi_nl_remove_driver(u64 vendor_id);
+
+void scsi_nl_send_transport_msg(u32 pid, struct scsi_nl_hdr *hdr);
+int scsi_nl_send_vendor_msg(u32 pid, unsigned short host_no, u64 vendor_id,
+                         char *data_buf, u32 data_len);
+
+#endif /* __KERNEL__ */
+
 #endif /* SCSI_NETLINK_H */
 
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index 878373c32ef7..21018a4df452 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -167,6 +167,26 @@ enum fc_tgtid_binding_type  {
 struct device_attribute dev_attr_vport_##_name =        \
         __ATTR(_name,_mode,_show,_store)
 
+/*
+ * fc_vport_identifiers: This set of data contains all elements
+ * to uniquely identify and instantiate a FC virtual port.
+ *
+ * Notes:
+ *   symbolic_name: The driver is to append the symbolic_name string data
+ *      to the symbolic_node_name data that it generates by default.
+ *      the resulting combination should then be registered with the switch.
+ *      It is expected that things like Xen may stuff a VM title into
+ *      this field.
+ */
+#define FC_VPORT_SYMBOLIC_NAMELEN               64
+struct fc_vport_identifiers {
+        u64 node_name;
+        u64 port_name;
+        u32 roles;
+        bool disable;
+        enum fc_port_type vport_type;   /* only FC_PORTTYPE_NPIV allowed */
+        char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN];
+};
 
 /*
  * FC Virtual Port Attributes
@@ -197,7 +217,6 @@ struct device_attribute dev_attr_vport_##_name = 	\
  * managed by the transport w/o driver interaction.
  */
 
-#define FC_VPORT_SYMBOLIC_NAMELEN               64
 struct fc_vport {
         /* Fixed Attributes */
 
@@ -732,6 +751,8 @@ void fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number,
          *   be sure to read the Vendor Type and ID formatting requirements
          *   specified in scsi_netlink.h
          */
+struct fc_vport *fc_vport_create(struct Scsi_Host *shost, int channel,
+                struct fc_vport_identifiers *);
 int fc_vport_terminate(struct fc_vport *vport);
 
 #endif /* SCSI_TRANSPORT_FC_H */