Re: [PATCH 2/4] scsi: libsas: Add sas_execute_internal_abort_dev()

Hannes Reinecke
2022-04-20T12:22:45Z

On 3/3/22 13:18, John Garry wrote:
> Add support for a "device" variant of internal abort, which will abort all
> pending IOs for a specific device.
>
> Signed-off-by: John Garry <john.garry@huawei.com>
> ---
> drivers/scsi/libsas/sas_scsi_host.c | 8 ++++++++
> include/scsi/libsas.h | 8 ++++++++
> 2 files changed, 16 insertions(+)
>
> diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
> index 0d05826e6e8c..8d6c83d15148 100644
> --- a/drivers/scsi/libsas/sas_scsi_host.c
> +++ b/drivers/scsi/libsas/sas_scsi_host.c
> @@ -995,6 +995,14 @@ int sas_execute_internal_abort_single(struct domain_device *device, u16 tag,
> }
> EXPORT_SYMBOL_GPL(sas_execute_internal_abort_single);
>
> +int sas_execute_internal_abort_dev(struct domain_device *device,
> + unsigned int qid, void *data)
> +{
> + return sas_execute_internal_abort(device, SAS_INTERNAL_ABORT_DEV,
> + SCSI_NO_TAG, qid, data);
> +}
> +EXPORT_SYMBOL_GPL(sas_execute_internal_abort_dev);
> +
> int sas_execute_tmf(struct domain_device *device, void *parameter,
> int para_len, int force_phy_id,
> struct sas_tmf_task *tmf)
> diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
> index 2d30d57916e5..71f632b2d2bd 100644
> --- a/include/scsi/libsas.h
> +++ b/include/scsi/libsas.h
> @@ -560,6 +560,7 @@ struct sas_ata_task {
> /* LLDDs rely on these values */
> enum sas_internal_abort {
> SAS_INTERNAL_ABORT_SINGLE = 0,
> + SAS_INTERNAL_ABORT_DEV = 1,
> };
>
> struct sas_internal_abort_task {
> @@ -641,6 +642,11 @@ extern struct sas_task *sas_alloc_task(gfp_t flags);
> extern struct sas_task *sas_alloc_slow_task(gfp_t flags);
> extern void sas_free_task(struct sas_task *task);
>
> +static inline bool sas_is_internal_abort(struct sas_task *task)
> +{
> + return task->task_proto == SAS_PROTOCOL_INTERNAL_ABORT;
> +}
> +
> struct sas_domain_function_template {
> /* The class calls these to notify the LLDD of an event. */
> void (*lldd_port_formed)(struct asd_sas_phy *);
> @@ -697,6 +703,8 @@ extern int sas_bios_param(struct scsi_device *, struct block_device *,
> int sas_execute_internal_abort_single(struct domain_device *device,
> u16 tag, unsigned int qid,
> void *data);
> +int sas_execute_internal_abort_dev(struct domain_device *device,
> + unsigned int qid, void *data);
> extern struct scsi_transport_template *
> sas_domain_attach_transport(struct sas_domain_function_template *);
> extern struct device_attribute dev_attr_phy_event_threshold;

Same comment as in the previous patch: Please use the existing TMF_XXX
values.

Cheers,

Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@suse.de +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), GF: Felix Imendörffer