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-rw-r--r--include/net/hwbm.h35
1 files changed, 35 insertions, 0 deletions
diff --git a/include/net/hwbm.h b/include/net/hwbm.h
new file mode 100644
index 000000000..aa495dece
--- /dev/null
+++ b/include/net/hwbm.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _HWBM_H
+#define _HWBM_H
+
+#include <linux/mutex.h>
+
+struct hwbm_pool {
+ /* Capacity of the pool */
+ int size;
+ /* Size of the buffers managed */
+ int frag_size;
+ /* Number of buffers currently used by this pool */
+ int buf_num;
+ /* constructor called during alocation */
+ int (*construct)(struct hwbm_pool *bm_pool, void *buf);
+ /* protect acces to the buffer counter*/
+ struct mutex buf_lock;
+ /* private data */
+ void *priv;
+};
+#ifdef CONFIG_HWBM
+void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf);
+int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp);
+int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num);
+#else
+static inline void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) {}
+
+static inline int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp)
+{ return 0; }
+
+static inline int hwbm_pool_add(struct hwbm_pool *bm_pool,
+ unsigned int buf_num)
+{ return 0; }
+#endif /* CONFIG_HWBM */
+#endif /* _HWBM_H */