include/net/hwbm.h

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