[SCSI] iscsi lib: have lib create work queue for transmitting IO

We were using the shost work queue which ended up being
a little akward since all iscsi hosts need a thread for
scanning, but only drivers hooked into libiscsi need
a workqueue for transmitting. So this patch moves the
xmit workqueue to the lib.

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

1 files changed, 6 insertions, 1 deletions

diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index 898de4a73727..b0b8a6992497 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -318,6 +318,9 @@ struct iscsi_host {
         spinlock_t              lock;
         int                     num_sessions;
         int                     state;
+
+        struct workqueue_struct *workq;
+        char                    workq_name[20];
 };
 
 /*
@@ -343,7 +346,8 @@ extern int iscsi_host_get_param(struct Scsi_Host *shost,
                                 enum iscsi_host_param param, char *buf);
 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);
+                                          int dd_data_size, uint16_t qdepth,
+                                          bool xmit_can_sleep);
 extern void iscsi_host_remove(struct Scsi_Host *shost);
 extern void iscsi_host_free(struct Scsi_Host *shost);
 
@@ -379,6 +383,7 @@ extern void iscsi_session_failure(struct iscsi_cls_session *cls_session,
 extern int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
                                 enum iscsi_param param, char *buf);
 extern void iscsi_suspend_tx(struct iscsi_conn *conn);
+extern void iscsi_conn_queue_work(struct iscsi_conn *conn);
 
 #define iscsi_conn_printk(prefix, _c, fmt, a...) \
         iscsi_cls_conn_printk(prefix, ((struct iscsi_conn *)_c)->cls_conn, \