1 /*
2  *   LASH
3  *
4  *   Copyright (C) 2002 Robert Ham <rah@bash.sh>
5  *
6  *   This program is free software; you can redistribute it and/or modify
7  *   it under the terms of the GNU General Public License as published by
8  *   the Free Software Foundation; either version 2 of the License, or
9  *   (at your option) any later version.
10  *
11  *   This program is distributed in the hope that it will be useful,
12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *   GNU General Public License for more details.
15  *
16  *   You should have received a copy of the GNU General Public License
17  *   along with this program; if not, write to the Free Software
18  *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19  */
20 
21 #ifndef __LASH_PROTOCOL_H__
22 #define __LASH_PROTOCOL_H__
23 
24 #include <stdint.h>
25 
26 typedef uint32_t lash_protocol_t;
27 
28 #define LASH_PROTOCOL_MAJOR 2
29 #define LASH_PROTOCOL_MINOR 0
30 
31 /*
32  * Protocol versions (release: protocol):
33  *
34  * 0.4: 2.0
35  * 0.3: 1.1
36  * 0.2: 1.0
37  * 0.1: 0.0 (implied by the 0ing of the lash_event_t.event_data)
38  */
39 
40 #define LASH_PROTOCOL_MAJOR_MASK 0xFFFF0000
41 #define LASH_PROTOCOL_MINOR_MASK 0x0000FFFF
42 
43 #define LASH_PROTOCOL(major, minor) \
44   ((lash_protocol_t)( ((major << 16) & LASH_PROTOCOL_MAJOR_MASK) | \
45                      (minor & LASH_PROTOCOL_MINOR_MASK)             ))
46 
47 #define LASH_PROTOCOL_VERSION (LASH_PROTOCOL (LASH_PROTOCOL_MAJOR, LASH_PROTOCOL_MINOR))
48 
49 #define LASH_PROTOCOL_GET_MAJOR(protocol)  ((lash_protocol_t) (((protocol & LASH_PROTOCOL_MAJOR_MASK) >> 16)))
50 #define LASH_PROTOCOL_GET_MINOR(protocol)  ((lash_protocol_t) (protocol & LASH_PROTOCOL_MINOR_MASK))
51 
52 #define LASH_PROTOCOL_IS_VALID(proto) \
53   ((LASH_PROTOCOL_GET_MAJOR (proto) == LASH_PROTOCOL_MAJOR) && \
54    (LASH_PROTOCOL_GET_MINOR (proto) <= LASH_PROTOCOL_MINOR))
55 
56 const char * lash_protocol_string (lash_protocol_t protocol);
57 
58 #endif /* __LASH_PROTOCOL_H__ */
59