drivers/net/ethernet/chelsio/cxgb4/cudbg_zlib.h

   1 /*
   2  *  Copyright (C) 2018 Chelsio Communications.  All rights reserved.
   3  *
   4  *  This program is free software; you can redistribute it and/or modify it
   5  *  under the terms and conditions of the GNU General Public License,
   6  *  version 2, as published by the Free Software Foundation.
   7  *
   8  *  This program is distributed in the hope it will be useful, but WITHOUT
   9  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  *  more details.
  12  *
  13  *  The full GNU General Public License is included in this distribution in
  14  *  the file called "COPYING".
  15  *
  16  */
  17
  18 #ifndef __CUDBG_ZLIB_H__
  19 #define __CUDBG_ZLIB_H__
  20
  21 #include <linux/zlib.h>
  22
  23 #define CUDBG_ZLIB_COMPRESS_ID 17
  24 #define CUDBG_ZLIB_WIN_BITS 12
  25 #define CUDBG_ZLIB_MEM_LVL 4
  26
  27 struct cudbg_compress_hdr {
  28         u32 compress_id;
  29         u64 decompress_size;
  30         u64 compress_size;
  31         u64 rsvd[32];
  32 };
  33
  34 static inline int cudbg_get_workspace_size(void)
  35 {
  36         return zlib_deflate_workspacesize(CUDBG_ZLIB_WIN_BITS,
  37                                           CUDBG_ZLIB_MEM_LVL);
  38 }
  39
  40 int cudbg_compress_buff(struct cudbg_init *pdbg_init,
  41                         struct cudbg_buffer *pin_buff,
  42                         struct cudbg_buffer *pout_buff);
  43 #endif /* __CUDBG_ZLIB_H__ */