include/net/hwbm.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _HWBM_H
   3 #define _HWBM_H
   4
   5 #include <linux/mutex.h>
   6
   7 struct hwbm_pool {
   8         /* Capacity of the pool */
   9         int size;
  10         /* Size of the buffers managed */
  11         int frag_size;
  12         /* Number of buffers currently used by this pool */
  13         int buf_num;
  14         /* constructor called during allocation */
  15         int (*construct)(struct hwbm_pool *bm_pool, void *buf);
  16         /* protect access to the buffer counter*/
  17         struct mutex buf_lock;
  18         /* private data */
  19         void *priv;
  20 };
  21 #ifdef CONFIG_HWBM
  22 void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf);
  23 int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp);
  24 int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num);
  25 #else
  26 static inline void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) {}
  27
  28 static inline int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp)
  29 { return 0; }
  30
  31 static inline int hwbm_pool_add(struct hwbm_pool *bm_pool,
  32                                 unsigned int buf_num)
  33 { return 0; }
  34 #endif /* CONFIG_HWBM */
  35 #endif /* _HWBM_H */