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[SCSI] iscsi class: user device_for_each_child instead of duplicating session list

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Currently we duplicate the list of sessions, because we were using the
test for if a session was on the host list to indicate if the session
was bound or unbound. We can instead use the target_id and fix up
the class so that drivers like bnx2i do not have to manage the target id
space.

Signed-off-by: Mike Christie <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
This commit is contained in:
Mike Christie 2008-05-21 15:54:12 -05:00 • committed by James Bottomley
commit 7970634b81
6 changed files with 104 additions and 37 deletions
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2
include/scsi/libiscsi.h
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@ -331,7 +331,7 @@ extern void iscsi_host_free(struct Scsi_Host *shost);
*/
extern struct iscsi_cls_session *
iscsi_session_setup(struct iscsi_transport *, struct Scsi_Host *shost,
uint16_t, int, uint32_t);
uint16_t, int, uint32_t, unsigned int);
extern void iscsi_session_teardown(struct iscsi_cls_session *);
extern void iscsi_session_recovery_timedout(struct iscsi_cls_session *);
extern int iscsi_set_param(struct iscsi_cls_conn *cls_conn,

6
include/scsi/scsi_transport_iscsi.h
View file

@ -161,9 +161,10 @@ enum {
ISCSI_SESSION_FREE,
};
#define ISCSI_MAX_TARGET -1
struct iscsi_cls_session {
struct list_head sess_list; /* item in session_list */
struct list_head host_list;
struct iscsi_transport *transport;
spinlock_t lock;
struct work_struct block_work;
@ -175,7 +176,7 @@ struct iscsi_cls_session {
int recovery_tmo;
struct delayed_work recovery_work;
int target_id;
unsigned int target_id;
int state;
int sid; /* session id */
@ -193,7 +194,6 @@ struct iscsi_cls_session {
iscsi_dev_to_session(_stgt->dev.parent)
struct iscsi_cls_host {
struct list_head sessions;
atomic_t nr_scans;
struct mutex mutex;
struct workqueue_struct *scan_workq;