xrp_ring_buffer.h 1.4 KB

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  1. /*
  2. * XRP ring buffer structure
  3. *
  4. * Copyright (c) 2018 Cadence Design Systems, Inc.
  5. *
  6. * Permission is hereby granted, free of charge, to any person obtaining
  7. * a copy of this software and associated documentation files (the
  8. * "Software"), to deal in the Software without restriction, including
  9. * without limitation the rights to use, copy, modify, merge, publish,
  10. * distribute, sublicense, and/or sell copies of the Software, and to
  11. * permit persons to whom the Software is furnished to do so, subject to
  12. * the following conditions:
  13. *
  14. * The above copyright notice and this permission notice shall be included
  15. * in all copies or substantial portions of the Software.
  16. *
  17. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18. * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  21. * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22. * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23. * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24. *
  25. * Alternatively you can use and distribute this file under the terms of
  26. * the GNU General Public License version 2 or later.
  27. */
  28. #ifndef XRP_RING_BUFFER_H
  29. #define XRP_RING_BUFFER_H
  30. struct xrp_ring_buffer {
  31. __u32 read;
  32. __u32 write;
  33. __u32 size;
  34. __u32 reserved[1];
  35. __u8 data[0];
  36. };
  37. #endif