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

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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>
This commit is contained in:
Mike Christie
2009-03-05 14:46:03 -06:00
committed by James Bottomley
parent 06d25af4ed
commit 32ae763e3f
7 changed files with 48 additions and 16 deletions
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7
include/scsi/libiscsi.h
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@@ -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, \