+/**
+ * Get new thread specific flow workspace.
+ *
+ * If current workspace inuse, create new one and set as current.
+ *
+ * @return pointer to thread specific flow workspace data, NULL on error.
+ */
+static struct mlx5_flow_workspace*
+mlx5_flow_push_thread_workspace(void)
+{
+ struct mlx5_flow_workspace *curr;
+ struct mlx5_flow_workspace *data;
+
+ if (pthread_once(&key_workspace_init, flow_alloc_workspace)) {
+ DRV_LOG(ERR, "Failed to init flow workspace data thread key.");
+ return NULL;
+ }
+ curr = pthread_getspecific(key_workspace);
+ if (!curr) {
+ data = flow_alloc_thread_workspace();
+ if (!data)
+ return NULL;
+ } else if (!curr->inuse) {
+ data = curr;
+ } else if (curr->next) {
+ data = curr->next;
+ } else {
+ data = flow_alloc_thread_workspace();
+ if (!data)
+ return NULL;
+ curr->next = data;
+ data->prev = curr;
+ }
+ data->inuse = 1;
+ data->flow_idx = 0;
+ /* Set as current workspace */
+ if (pthread_setspecific(key_workspace, data))
+ DRV_LOG(ERR, "Failed to set flow workspace to thread.");
+ return data;
+}
+
+/**
+ * Close current thread specific flow workspace.
+ *
+ * If previous workspace available, set it as current.
+ *
+ * @return pointer to thread specific flow workspace data, NULL on error.
+ */
+static void
+mlx5_flow_pop_thread_workspace(void)
+{
+ struct mlx5_flow_workspace *data = mlx5_flow_get_thread_workspace();
+
+ if (!data)
+ return;
+ if (!data->inuse) {
+ DRV_LOG(ERR, "Failed to close unused flow workspace.");
+ return;
+ }
+ data->inuse = 0;
+ if (!data->prev)
+ return;
+ if (pthread_setspecific(key_workspace, data->prev))
+ DRV_LOG(ERR, "Failed to set flow workspace to thread.");
+}
+