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[SCSI] libiscsi: make can_queue configurable

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This patch allows us to set can_queue and cmds_per_lun from userspace
when we create the session/host. From there we can set it on a per
target basis. The patch fully converts iscsi_tcp, but only hooks
up ib_iser for cmd_per_lun since it currently has a lots of preallocations
based on can_queue.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Cc: Roland Dreier <rdreier@cisco.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Mike Christie 2007-05-30 12:57:19 -05:00 • committed by James Bottomley
parent 77a23c21aa
commit 1548271ece
9 changed files with 52 additions and 14 deletions
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7
include/scsi/libiscsi.h
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@ -48,9 +48,8 @@ struct iscsi_nopin;
#define debug_scsi(fmt...)
#endif
#define ISCSI_XMIT_CMDS_MAX 128 /* must be power of 2 */
#define ISCSI_MGMT_CMDS_MAX 32 /* must be power of 2 */
#define ISCSI_CONN_MAX 1
#define ISCSI_DEF_XMIT_CMDS_MAX 128 /* must be power of 2 */
#define ISCSI_MGMT_CMDS_MAX 16 /* must be power of 2 */
#define ISCSI_MGMT_ITT_OFFSET 0xa00
@ -268,7 +267,7 @@ extern int iscsi_host_get_param(struct Scsi_Host *shost,
*/
extern struct iscsi_cls_session *
iscsi_session_setup(struct iscsi_transport *, struct scsi_transport_template *,
int, int, uint32_t, uint32_t *);
uint16_t, uint16_t, int, int, uint32_t, uint32_t *);
extern void iscsi_session_teardown(struct iscsi_cls_session *);
extern struct iscsi_session *class_to_transport_session(struct iscsi_cls_session *);
extern void iscsi_session_recovery_timedout(struct iscsi_cls_session *);