60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/* Copyright (c) 2008-2009, 2012, The Linux Foundation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 and
|
|
* only version 2 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#ifndef DIAGCHAR_HDLC
|
|
#define DIAGCHAR_HDLC
|
|
|
|
enum diag_send_state_enum_type {
|
|
DIAG_STATE_START,
|
|
DIAG_STATE_BUSY,
|
|
DIAG_STATE_CRC1,
|
|
DIAG_STATE_CRC2,
|
|
DIAG_STATE_TERM,
|
|
DIAG_STATE_COMPLETE
|
|
};
|
|
|
|
struct diag_send_desc_type {
|
|
const void *pkt;
|
|
const void *last; /* Address of last byte to send. */
|
|
enum diag_send_state_enum_type state;
|
|
unsigned char terminate; /* True if this fragment
|
|
terminates the packet */
|
|
};
|
|
|
|
struct diag_hdlc_dest_type {
|
|
void *dest;
|
|
void *dest_last;
|
|
/* Below: internal use only */
|
|
uint16_t crc;
|
|
};
|
|
|
|
struct diag_hdlc_decode_type {
|
|
uint8_t *src_ptr;
|
|
unsigned int src_idx;
|
|
unsigned int src_size;
|
|
uint8_t *dest_ptr;
|
|
unsigned int dest_idx;
|
|
unsigned int dest_size;
|
|
int escaping;
|
|
|
|
};
|
|
|
|
void diag_hdlc_encode(struct diag_send_desc_type *src_desc,
|
|
struct diag_hdlc_dest_type *enc);
|
|
|
|
int diag_hdlc_decode(struct diag_hdlc_decode_type *hdlc);
|
|
|
|
#define ESC_CHAR 0x7D
|
|
#define ESC_MASK 0x20
|
|
|
|
#endif
|