Dan Williams
0f9d4d2a1a
Rename and document the encapsulate/decapsulate functions, CRC-check the incoming packet, and make callers aware of the difference in how big the decapsulated packet is versus how many bytes they should discard from the buffer (since the decapsulated packet is at least 3 bytes shorter than the incoming packet due to the CRC + framing).
55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/*
|
|
* Copyright (C) 2010 Red Hat, Inc.
|
|
*
|
|
* This program is free software: you can redistribute it and/or
|
|
* modify it under the terms of version 2 of the GNU General Public
|
|
* License 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef UTILS_H
|
|
#define UTILS_H
|
|
|
|
#include <glib.h>
|
|
|
|
#define DIAG_CONTROL_CHAR 0x7E
|
|
#define DIAG_TRAILER_LEN 3
|
|
|
|
guint16 crc16 (const char *buffer, gsize len);
|
|
|
|
gsize dm_escape (const char *inbuf,
|
|
gsize inbuf_len,
|
|
char *outbuf,
|
|
gsize outbuf_len);
|
|
|
|
gsize dm_unescape (const char *inbuf,
|
|
gsize inbuf_len,
|
|
char *outbuf,
|
|
gsize outbuf_len,
|
|
gboolean *escaping);
|
|
|
|
gsize dm_encapsulate_buffer (char *inbuf,
|
|
gsize cmd_len,
|
|
gsize inbuf_len,
|
|
char *outbuf,
|
|
gsize outbuf_len);
|
|
|
|
gboolean dm_decapsulate_buffer (const char *inbuf,
|
|
gsize inbuf_len,
|
|
char *outbuf,
|
|
gsize outbuf_len,
|
|
gsize *out_decap_len,
|
|
gsize *out_used,
|
|
gboolean *out_need_more);
|
|
|
|
#endif /* UTILS_H */
|
|
|