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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 <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Andy Grover <[email protected]>
Cc: Sagi Grimberg <[email protected]>
Cc: <[email protected]>
Cc: Felipe Balbi <[email protected]>
Cc: Michael S. Tsirkin <[email protected]>
Cc: Juergen Gross <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
This commit is contained in:
Bart Van Assche 2015-04-14 13:26:44 +02:00 • committed by Nicholas Bellinger
commit 649ee05499
22 changed files with 76 additions and 182 deletions
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10
drivers/xen/xen-scsiback.c
View file

@ -400,6 +400,7 @@ static void scsiback_cmd_exec(struct vscsibk_pend *pending_req)
memset(se_cmd, 0, sizeof(*se_cmd));
scsiback_get(pending_req->info);
se_cmd->tag = pending_req->rqid;
rc = target_submit_cmd_map_sgls(se_cmd, sess, pending_req->cmnd,
pending_req->sense_buffer, pending_req->v2p->lun,
pending_req->data_len, 0,
@ -1394,14 +1395,6 @@ static void scsiback_set_default_node_attrs(struct se_node_acl *nacl)
{
}
static u32 scsiback_get_task_tag(struct se_cmd *se_cmd)
{
struct vscsibk_pend *pending_req = container_of(se_cmd,
struct vscsibk_pend, se_cmd);
return pending_req->rqid;
}
static int scsiback_get_cmd_state(struct se_cmd *se_cmd)
{
return 0;
@ -1833,7 +1826,6 @@ static const struct target_core_fabric_ops scsiback_ops = {
.write_pending = scsiback_write_pending,
.write_pending_status = scsiback_write_pending_status,
.set_default_node_attributes = scsiback_set_default_node_attrs,
.get_task_tag = scsiback_get_task_tag,
.get_cmd_state = scsiback_get_cmd_state,
.queue_data_in = scsiback_queue_data_in,
.queue_status = scsiback_queue_status,