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hci_bcsp.h

hci_bcsp.h 2.2 KB
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  1. /* 
    2. 

  2.    BlueCore Serial Protocol (BCSP) for Linux Bluetooth stack (BlueZ).
    3. 

  3.    Copyright 2002 by Fabrizio Gennari <fabrizio.gennari@philips.com>
    4. 

  4. 

  5.    Based on
    6. 

  6.        hci_h4.c  by Maxim Krasnyansky <maxk@qualcomm.com>
    7. 

  7.        ABCSP     by Carl Orsborn <cjo@csr.com>
    8. 

  8. 

  9.    This program is free software; you can redistribute it and/or modify
    10. 

  10.    it under the terms of the GNU General Public License version 2 as
    11. 

  11.    published by the Free Software Foundation;
    12. 

  12. 

  13.    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
    14. 

  14.    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15. 

  15.    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
    16. 

  16.    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
    17. 

  17.    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 
    18. 

  18.    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 
    19. 

  19.    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 
    20. 

  20.    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
    21. 

  21. 

  22.    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 
    23. 

  23.    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 
    24. 

  24.    SOFTWARE IS DISCLAIMED.
    25. 

  25. */
    26. 

  26. 

  27. /* 
    28. 

  28.  * $Id: hci_bcsp.h,v 1.2 2002/09/26 05:05:14 maxk Exp $
    29. 

  29.  */
    30. 

  30. 

  31. #ifndef __HCI_BCSP_H__
    32. 

  32. #define __HCI_BCSP_H__
    33. 

  33. 

  34. #define BCSP_TXWINSIZE  4
    35. 

  35. 

  36. #define BCSP_ACK_PKT    0x05
    37. 

  37. #define BCSP_LE_PKT     0x06
    38. 

  38. 

  39. struct bcsp_struct {
    40. 

  40. 	struct sk_buff_head unack;	/* Unack'ed packets queue */
    41. 

  41. 	struct sk_buff_head rel;	/* Reliable packets queue */
    42. 

  42. 	struct sk_buff_head unrel;	/* Unreliable packets queue */
    43. 

  43. 

  44. 	unsigned long rx_count;
    45. 

  45. 	struct  sk_buff *rx_skb;
    46. 

  46. 	u8      rxseq_txack;		/* rxseq == txack. */
    47. 

  47. 	u8      rxack;			/* Last packet sent by us that the peer ack'ed */
    48. 

  48. 	struct  timer_list tbcsp;
    49. 

  49. 	
    50. 

  50. 	enum {
    51. 

  51. 		BCSP_W4_PKT_DELIMITER,
    52. 

  52. 		BCSP_W4_PKT_START,
    53. 

  53. 		BCSP_W4_BCSP_HDR,
    54. 

  54. 		BCSP_W4_DATA,
    55. 

  55. 		BCSP_W4_CRC
    56. 

  56. 	} rx_state;
    57. 

  57. 

  58. 	enum {
    59. 

  59. 		BCSP_ESCSTATE_NOESC,
    60. 

  60. 		BCSP_ESCSTATE_ESC
    61. 

  61. 	} rx_esc_state;
    62. 

  62. 

  63. 	u16     message_crc;
    64. 

  64. 	u8      txack_req;		/* Do we need to send ack's to the peer? */
    65. 

  65. 

  66. 	/* Reliable packet sequence number - used to assign seq to each rel pkt. */
    67. 

  67. 	u8      msgq_txseq;
    68. 

  68. };
    69. 

  69. 

  70. #endif	/* __HCI_BCSP_H__ */
    71.