sixlowpan_globals.c 2.9 KB

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  1. /****************************************************************************
  2. * net/sixlowpan/sixlowpan_globals.c
  3. *
  4. * Copyright (C) 2017 Gregory Nutt. All rights reserved.
  5. * Author: Gregory Nutt <gnutt@nuttx.org>
  6. *
  7. * Redistribution and use in source and binary forms, with or without
  8. * modification, are permitted provided that the following conditions
  9. * are met:
  10. *
  11. * 1. Redistributions of source code must retain the above copyright
  12. * notice, this list of conditions and the following disclaimer.
  13. * 2. Redistributions in binary form must reproduce the above copyright
  14. * notice, this list of conditions and the following disclaimer in
  15. * the documentation and/or other materials provided with the
  16. * distribution.
  17. * 3. Neither the name NuttX nor the names of its contributors may be
  18. * used to endorse or promote products derived from this software
  19. * without specific prior written permission.
  20. *
  21. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24. * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  25. * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26. * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27. * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  28. * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29. * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  31. * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32. * POSSIBILITY OF SUCH DAMAGE.
  33. *
  34. ****************************************************************************/
  35. /****************************************************************************
  36. * Included Files
  37. ****************************************************************************/
  38. #include <nuttx/config.h>
  39. #include "sixlowpan/sixlowpan_internal.h"
  40. #ifdef CONFIG_NET_6LOWPAN
  41. /****************************************************************************
  42. * Public Data
  43. ****************************************************************************/
  44. /* The following data values are used to hold intermediate settings while
  45. * processing IEEE802.15.4 frames. These globals are shared with incoming
  46. * and outgoing frame processing and possibly with mutliple IEEE802.15.4 MAC
  47. * devices. The network lock provides exclusive use of these globals
  48. * during that processing
  49. */
  50. /* g_uncomp_hdrlen is the length of the headers before compression (if HC2
  51. * is used this includes the UDP header in addition to the IP header).
  52. */
  53. uint8_t g_uncomp_hdrlen;
  54. /* g_frame_hdrlen is the total length of (the processed) 6lowpan headers
  55. * (fragment headers, IPV6 or HC1, HC2, and HC1 and HC2 non compressed
  56. * fields).
  57. */
  58. uint8_t g_frame_hdrlen;
  59. #endif /* CONFIG_NET_6LOWPAN */