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qla2x00t-32gbit: target: Add on_abort_cmd callback

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This enables the initiator to abort commands that are stuck pending in
the HW without waiting for a timeout.

Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
This commit is contained in:
Tony Battersby
2025-10-14 12:26:06 +03:00
committed by Gleb Chesnokov
parent f4b52771b6
commit 64918c69a2
1 changed files with 42 additions and 0 deletions
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42
qla2x00t-32gbit/qla2x00-target/scst_qla2xxx.c
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@@ -83,6 +83,7 @@ static int sqa_xmit_response(struct scst_cmd *scst_cmd);
static int sqa_rdy_to_xfer(struct scst_cmd *scst_cmd);
static void sqa_on_free_cmd(struct scst_cmd *scst_cmd);
static void sqa_task_mgmt_fn_done(struct scst_mgmt_cmd *mcmd);
static void sqa_on_abort_cmd(struct scst_cmd *scst_cmd);
static int sqa_get_initiator_port_transport_id(struct scst_tgt *tgt,
struct scst_session *scst_sess,
uint8_t **transport_id);
@@ -1273,6 +1274,7 @@ static struct scst_tgt_template sqa_scst_template = {
.on_free_cmd = sqa_on_free_cmd,
.task_mgmt_fn_done = sqa_task_mgmt_fn_done,
.on_abort_cmd = sqa_on_abort_cmd,
.close_session = sqa_close_session,
.get_initiator_port_transport_id = sqa_get_initiator_port_transport_id,
@@ -2034,6 +2036,46 @@ out_unlock:
TRACE_EXIT();
}
struct sqa_abort_work {
struct scst_cmd *scst_cmd;
struct work_struct abort_work;
};
static void sqa_on_abort_cmd_work(struct work_struct *work)
{
struct sqa_abort_work *abort_work =
container_of(work, struct sqa_abort_work, abort_work);
struct scst_cmd *scst_cmd = abort_work->scst_cmd;
struct qla_tgt_cmd *cmd = scst_cmd_get_tgt_priv(scst_cmd);
TRACE_ENTRY();
kfree(abort_work);
qlt_abort_cmd(cmd);
scst_cmd_put(scst_cmd);
TRACE_EXIT();
}
static void sqa_on_abort_cmd(struct scst_cmd *scst_cmd)
{
struct sqa_abort_work *abort_work;
/*
* The caller holds sess->sess_list_lock, but qlt_abort_cmd() needs to
* acquire qpair->qp_lock_ptr (ha->hardware_lock); these locks are
* acquired in the reverse order elsewhere. Use a workqueue to avoid
* acquiring the locks in the wrong order here.
*/
abort_work = kmalloc(sizeof(*abort_work), GFP_ATOMIC);
if (!abort_work)
return;
scst_cmd_get(scst_cmd);
abort_work->scst_cmd = scst_cmd;
INIT_WORK(&abort_work->abort_work, sqa_on_abort_cmd_work);
schedule_work(&abort_work->abort_work);
}
/*
* The following structure defines the callbacks which will be executed
* from functions in the qla_target.c file back to this interface