[Accel-config] [PATCH 1/6] accel-config: Add driver_name attribute to wq context

Add a driver_name memember to wq context structure and API to set it. It
will be initialized with the value stored in sysfs. A NULL will be
stored if driver_name attribute is not present.

Signed-off-by: Ramesh Thomas <ramesh.thomas(a)intel.com>
---
 accfg/lib/libaccel-config.sym |  7 +++++++
 accfg/lib/libaccfg.c          | 24 ++++++++++++++++++++++++
 accfg/lib/private.h           |  1 +
 accfg/libaccel_config.h       |  3 +++
 4 files changed, 35 insertions(+)

diff --git a/accfg/lib/libaccel-config.sym b/accfg/lib/libaccel-config.sym
index 560883a..fde9251 100644
--- a/accfg/lib/libaccel-config.sym
+++ b/accfg/lib/libaccel-config.sym
@@ -179,3 +179,10 @@ global:
 	accfg_group_set_read_buffers_allowed;
 	accfg_group_set_use_read_buffer_limit;
 } LIBACCFG_11;
+
+LIBACCFG_13 {
+global:
+	accfg_wq_set_str_driver_name;
+	accfg_wq_get_driver_name;
+	accfg_wq_driver_name_validate;
+} LIBACCFG_12;
diff --git a/accfg/lib/libaccfg.c b/accfg/lib/libaccfg.c
index 86ee517..5bd4623 100644
--- a/accfg/lib/libaccfg.c
+++ b/accfg/lib/libaccfg.c
@@ -827,6 +827,7 @@ static void *add_wq(void *parent, int id, const char *wq_base,
 	wq->cdev_minor = accfg_get_param_long(ctx, dfd, "cdev_minor");
 	wq_type = accfg_get_param_str(ctx, dfd, "type");
 	wq->name = accfg_get_param_str(ctx, dfd, "name");
+	wq->driver_name = accfg_get_param_str(ctx, dfd, "driver_name");
 	wq->threshold =  accfg_get_param_long(ctx, dfd, "threshold");
 	wq->max_batch_size =  accfg_get_param_long(ctx, dfd, "max_batch_size");
 	wq->max_transfer_size =  accfg_get_param_long(ctx, dfd, "max_transfer_size");
@@ -2062,6 +2063,28 @@ ACCFG_EXPORT const char *accfg_wq_get_type_name(struct accfg_wq *wq)
 	return wq->name;
 }
 
+ACCFG_EXPORT const char *accfg_wq_get_driver_name(struct accfg_wq *wq)
+{
+	return wq->driver_name;
+}
+
+ACCFG_EXPORT int accfg_wq_driver_name_validate(struct accfg_wq *wq,
+		const char *drv_name)
+{
+	int rc = 0;
+	char *path = NULL;
+	struct accfg_device *device = accfg_wq_get_device(wq);
+
+	rc = get_driver_bind_path(device->bus_type_str, wq->driver_name, &path);
+	if (rc < 0)
+		return 0;
+
+	rc = access(path, F_OK);
+	free(path);
+
+	return !rc;
+}
+
 ACCFG_EXPORT uint64_t accfg_wq_get_size(struct accfg_wq *wq)
 {
 	return wq->size;
@@ -2454,6 +2477,7 @@ ACCFG_EXPORT int accfg_wq_set_str_##field( \
 
 accfg_wq_set_str_field(wq, val, mode)
 accfg_wq_set_str_field(wq, val, name)
+accfg_wq_set_str_field(wq, val, driver_name)
 
 static int wq_parse_type(struct accfg_wq *wq, char *wq_type);
 
diff --git a/accfg/lib/private.h b/accfg/lib/private.h
index b09297e..f88044c 100644
--- a/accfg/lib/private.h
+++ b/accfg/lib/private.h
@@ -121,6 +121,7 @@ struct accfg_wq {
 	unsigned int threshold;
 	char *mode;
 	char *name;
+	char *driver_name;
 	enum accfg_wq_type type;
 	char *state;
 	unsigned int max_batch_size;
diff --git a/accfg/libaccel_config.h b/accfg/libaccel_config.h
index 8bd6dda..1aad3f3 100644
--- a/accfg/libaccel_config.h
+++ b/accfg/libaccel_config.h
@@ -293,6 +293,8 @@ int accfg_wq_get_block_on_fault(struct accfg_wq *wq);
 enum accfg_wq_state accfg_wq_get_state(struct accfg_wq *wq);
 int accfg_wq_get_cdev_minor(struct accfg_wq *wq);
 const char *accfg_wq_get_type_name(struct accfg_wq *wq);
+const char *accfg_wq_get_driver_name(struct accfg_wq *wq);
+int accfg_wq_driver_name_validate(struct accfg_wq *wq, const char *drv_name);
 enum accfg_wq_type accfg_wq_get_type(struct accfg_wq *wq);
 unsigned int accfg_wq_get_max_batch_size(struct accfg_wq *wq);
 uint64_t accfg_wq_get_max_transfer_size(struct accfg_wq *wq);
@@ -313,6 +315,7 @@ int accfg_wq_set_str_mode(struct accfg_wq *wq, const char *val);
 int accfg_wq_set_mode(struct accfg_wq *wq, enum accfg_wq_mode mode);
 int accfg_wq_set_str_type(struct accfg_wq *wq, const char *val);
 int accfg_wq_set_str_name(struct accfg_wq *wq, const char *val);
+int accfg_wq_set_str_driver_name(struct accfg_wq *wq, const char *val);
 int accfg_wq_enable(struct accfg_wq *wq);
 int accfg_wq_disable(struct accfg_wq *wq, bool force);
 int accfg_wq_priority_boundary(struct accfg_wq *wq);
-- 
2.31.1