This adds a helper to find a se_device by dev_index. It will
be used in the next patches so tcmu's netlink interface can
execute commands on specific devices.
Signed-off-by: Mike Christie <mchristi@xxxxxxxxxx>
---
drivers/target/target_core_device.c | 11 +++++++++++
include/target/target_core_backend.h | 2 ++
2 files changed, 13 insertions(+)
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index d4090f7..9f2a527 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -880,6 +880,17 @@ sector_t target_to_linux_sector(struct se_device *dev, sector_t lb)
}
EXPORT_SYMBOL(target_to_linux_sector);
+struct se_device *target_find_device(int id)
+{
+ struct se_device *dev;
+
+ mutex_lock(&g_device_mutex);
+ dev = idr_find(&devices_idr, id);
+ mutex_unlock(&g_device_mutex);
+ return dev;
+}
+EXPORT_SYMBOL(target_find_device);
+
void target_init_device_idr(void)
{
idr_init(&devices_idr);
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
index b760711..3f015ab 100644
--- a/include/target/target_core_backend.h
+++ b/include/target/target_core_backend.h
@@ -105,6 +105,8 @@ sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *,
sense_reason_t passthrough_parse_cdb(struct se_cmd *cmd,
sense_reason_t (*exec_cmd)(struct se_cmd *cmd));
+struct se_device *target_find_device(int id);
+
bool target_sense_desc_format(struct se_device *dev);
sector_t target_to_linux_sector(struct se_device *dev, sector_t lb);
bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib,
--
1.8.3.1
--
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