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target: Move task tag into struct se_cmd + support 64-bit tags

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Simplify target core and target drivers by storing the task tag
a.k.a. command identifier inside struct se_cmd.

For several transports (e.g. SRP) tags are 64 bits wide.
Hence add support for 64-bit tags.

(Fix core_tmr_abort_task conversion spec warnings - nab)
(Fix up usb-gadget to use 16-bit tags - HCH + bart)

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Andy Grover <agrover@redhat.com>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: <qla2xxx-upstream@qlogic.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Bart Van Assche
2015-04-14 13:26:44 +02:00
committed by Nicholas Bellinger
parent 2650d71e24
commit 649ee05499
22 changed files with 76 additions and 182 deletions
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3
include/target/target_core_base.h
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@@ -420,7 +420,7 @@ struct se_tmr_req {
u8 response;
int call_transport;
/* Reference to ITT that Task Mgmt should be performed */
u32 ref_task_tag;
u64 ref_task_tag;
void *fabric_tmr_ptr;
struct se_cmd *task_cmd;
struct se_device *tmr_dev;
@@ -473,6 +473,7 @@ struct se_cmd {
u8 scsi_asc;
u8 scsi_ascq;
u16 scsi_sense_length;
u64 tag; /* SAM command identifier aka task tag */
/* Delay for ALUA Active/NonOptimized state access in milliseconds */
int alua_nonop_delay;
/* See include/linux/dma-mapping.h */

1
include/target/target_core_fabric.h
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@@ -53,7 +53,6 @@ struct target_core_fabric_ops {
int (*write_pending)(struct se_cmd *);
int (*write_pending_status)(struct se_cmd *);
void (*set_default_node_attributes)(struct se_node_acl *);
u32 (*get_task_tag)(struct se_cmd *);
int (*get_cmd_state)(struct se_cmd *);
int (*queue_data_in)(struct se_cmd *);
int (*queue_status)(struct se_cmd *);