| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | BlueCore Serial Protocol (BCSP) for Linux Bluetooth stack (BlueZ). |
| 3 | Copyright 2002 by Fabrizio Gennari <fabrizio.gennari@philips.com> |
| 4 | |
| 5 | Based on |
| 6 | hci_h4.c by Maxim Krasnyansky <maxk@qualcomm.com> |
| 7 | ABCSP by Carl Orsborn <cjo@csr.com> |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License version 2 as |
| 11 | published by the Free Software Foundation; |
| 12 | |
| 13 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 14 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 15 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| 16 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
| 17 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
| 18 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 19 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 20 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 21 | |
| 22 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
| 23 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
| 24 | SOFTWARE IS DISCLAIMED. |
| 25 | */ |
| 26 | |
| 27 | /* |
| 28 | * $Id: hci_bcsp.h,v 1.2 2002/09/26 05:05:14 maxk Exp $ |
| 29 | */ |
| 30 | |
| 31 | #ifndef __HCI_BCSP_H__ |
| 32 | #define __HCI_BCSP_H__ |
| 33 | |
| 34 | #define BCSP_TXWINSIZE 4 |
| 35 | |
| 36 | #define BCSP_ACK_PKT 0x05 |
| 37 | #define BCSP_LE_PKT 0x06 |
| 38 | |
| 39 | struct bcsp_struct { |
| 40 | struct sk_buff_head unack; /* Unack'ed packets queue */ |
| 41 | struct sk_buff_head rel; /* Reliable packets queue */ |
| 42 | struct sk_buff_head unrel; /* Unreliable packets queue */ |
| 43 | |
| 44 | unsigned long rx_count; |
| 45 | struct sk_buff *rx_skb; |
| 46 | u8 rxseq_txack; /* rxseq == txack. */ |
| 47 | u8 rxack; /* Last packet sent by us that the peer ack'ed */ |
| 48 | struct timer_list tbcsp; |
| 49 | |
| 50 | enum { |
| 51 | BCSP_W4_PKT_DELIMITER, |
| 52 | BCSP_W4_PKT_START, |
| 53 | BCSP_W4_BCSP_HDR, |
| 54 | BCSP_W4_DATA, |
| 55 | BCSP_W4_CRC |
| 56 | } rx_state; |
| 57 | |
| 58 | enum { |
| 59 | BCSP_ESCSTATE_NOESC, |
| 60 | BCSP_ESCSTATE_ESC |
| 61 | } rx_esc_state; |
| 62 | |
| 63 | u16 message_crc; |
| 64 | u8 txack_req; /* Do we need to send ack's to the peer? */ |
| 65 | |
| 66 | /* Reliable packet sequence number - used to assign seq to each rel pkt. */ |
| 67 | u8 msgq_txseq; |
| 68 | }; |
| 69 | |
| 70 | #endif /* __HCI_BCSP_H__ */ |