[PATCH v2 2/4] scsi: libsas: Add sas_execute_internal_abort_dev()

[John Garry <john.garry@huawei.com>]

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>
Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.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 bb6baa52264d..13142ec97f1d 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -994,6 +994,14 @@ 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;
-- 
2.26.2