[Accel-config] [PATCH v1 3/6] accel-config: Add API to check for mdev support availability

From: Ramesh Thomas <ramesh.thomas(a)intel.com>

Add a function to check for mdev support availability to allow
mdev command implementations to bail out if support is not available.

Signed-off-by: Ramesh Thomas <ramesh.thomas(a)intel.com>
---
 accfg/lib/libaccel-config.sym | 1 +
 accfg/lib/libaccfg.c          | 6 ++++++
 accfg/libaccel_config.h       | 1 +
 3 files changed, 8 insertions(+)

diff --git a/accfg/lib/libaccel-config.sym b/accfg/lib/libaccel-config.sym
index 00f97d5..4de2a49 100644
--- a/accfg/lib/libaccel-config.sym
+++ b/accfg/lib/libaccel-config.sym
@@ -139,4 +139,5 @@ global:
 	accfg_mdev_basenames;
 	accfg_create_mdev;
 	accfg_remove_mdev;
+	accfg_device_get_mdev_enabled;
 } LIBACCFG_6;
diff --git a/accfg/lib/libaccfg.c b/accfg/lib/libaccfg.c
index 69f0f71..a596c90 100644
--- a/accfg/lib/libaccfg.c
+++ b/accfg/lib/libaccfg.c
@@ -1229,6 +1229,12 @@ ACCFG_EXPORT bool accfg_device_get_pasid_enabled(
 	return device->pasid_enabled;
 }
 
+ACCFG_EXPORT bool accfg_device_get_mdev_enabled(
+		struct accfg_device *device)
+{
+	return device->mdev_path != NULL;
+}
+
 ACCFG_EXPORT int accfg_device_get_errors(struct accfg_device *device,
 		struct accfg_error *error)
 {
diff --git a/accfg/libaccel_config.h b/accfg/libaccel_config.h
index 7fa3c2b..239d393 100644
--- a/accfg/libaccel_config.h
+++ b/accfg/libaccel_config.h
@@ -172,6 +172,7 @@ unsigned long accfg_device_get_op_cap(struct accfg_device *device);
 unsigned long accfg_device_get_gen_cap(struct accfg_device *device);
 unsigned int accfg_device_get_configurable(struct accfg_device *device);
 bool accfg_device_get_pasid_enabled(struct accfg_device  *device);
+bool accfg_device_get_mdev_enabled(struct accfg_device *device);
 int accfg_device_get_errors(struct accfg_device *device, struct accfg_error *error);
 enum accfg_device_state accfg_device_get_state(struct accfg_device *device);
 unsigned int accfg_device_get_max_tokens(struct accfg_device *device);
-- 
2.26.2