[SCSI] iscsi: add iscsi host helpers

This finishes the host/session unbinding, by adding some helpers
to add and remove hosts and the session they manage.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

2 files changed, 13 insertions, 2 deletions

diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index 8a6271c20935..9a26d715a953 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -32,6 +32,7 @@
 #include <scsi/iscsi_if.h>
 
 struct scsi_transport_template;
+struct scsi_host_template;
 struct scsi_device;
 struct Scsi_Host;
 struct scsi_cmnd;
@@ -41,6 +42,7 @@ struct iscsi_cls_session;
 struct iscsi_cls_conn;
 struct iscsi_session;
 struct iscsi_nopin;
+struct device;
 
 /* #define DEBUG_SCSI */
 #ifdef DEBUG_SCSI
@@ -311,6 +313,8 @@ struct iscsi_host {
         char                    local_address[ISCSI_ADDRESS_BUF_LEN];
 };
 
+#define iscsi_host_priv(_shost) \
+        (shost_priv(_shost) + sizeof(struct iscsi_host))
 /*
  * scsi host template
  */
@@ -330,8 +334,11 @@ extern int iscsi_host_set_param(struct Scsi_Host *shost,
                                 int buflen);
 extern int iscsi_host_get_param(struct Scsi_Host *shost,
                                 enum iscsi_host_param param, char *buf);
-extern void iscsi_host_setup(struct Scsi_Host *shost, uint16_t qdepth);
-extern void iscsi_host_teardown(struct Scsi_Host *shost);
+extern int iscsi_host_add(struct Scsi_Host *shost, struct device *pdev);
+extern struct Scsi_Host *iscsi_host_alloc(struct scsi_host_template *sht,
+                                          int dd_data_size, uint16_t qdepth);
+extern void iscsi_host_remove(struct Scsi_Host *shost);
+extern void iscsi_host_free(struct Scsi_Host *shost);
 
 /*
  * session management
diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index 702eda2904d7..761f62da7cc8 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -207,6 +207,10 @@ struct iscsi_cls_host {
         char scan_workq_name[KOBJ_NAME_LEN];
 };
 
+extern void iscsi_host_for_each_session(struct Scsi_Host *shost,
+                                void (*fn)(struct iscsi_cls_session *));
+
+
 /*
  * session and connection functions that can be used by HW iSCSI LLDs
  */