OpenVPN
lzo.h
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1 /*
2  * OpenVPN -- An application to securely tunnel IP networks
3  * over a single UDP port, with support for SSL/TLS-based
4  * session authentication and key exchange,
5  * packet encryption, packet authentication, and
6  * packet compression.
7  *
8  * Copyright (C) 2002-2023 OpenVPN Inc <sales@openvpn.net>
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2
12  * as published by the Free Software Foundation.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License along
20  * with this program; if not, write to the Free Software Foundation, Inc.,
21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22  */
23 
24 #ifndef OPENVPN_LZO_H
25 #define OPENVPN_LZO_H
26 
27 
34 #if defined(ENABLE_LZO)
35 
40 #if defined(HAVE_LZO_CONF_H)
41 /* The lzo.h magic gets confused and still wants
42  * to include lzo/lzoconf.h even if our include paths
43  * are setup to include the paths without lzo/ include lzoconf.h to
44  * avoid it being include by lzoutil.h */
45 #include <lzodefs.h>
46 #include <lzoconf.h>
47 #endif
48 #if defined(HAVE_LZO_LZOUTIL_H)
49 #include <lzo/lzoutil.h>
50 #elif defined(HAVE_LZOUTIL_H)
51 #include <lzoutil.h>
52 #endif
53 #if defined(HAVE_LZO_LZO1X_H)
54 #include <lzo/lzo1x.h>
55 #elif defined(HAVE_LZO1X_H)
56 #include <lzo1x.h>
57 #endif
58 
59 #include "buffer.h"
60 #include "mtu.h"
61 #include "common.h"
62 #include "status.h"
63 
64 extern const struct compress_alg lzo_alg;
65 
66 /**************************************************************************//***********************/
68 #define LZO_COMPRESS lzo1x_1_15_compress
69 
75 #define LZO_WORKSPACE LZO1X_1_15_MEM_COMPRESS
76 
79 #define LZO_DECOMPRESS lzo1x_decompress_safe
80 /**************************************/
90 
91 
92 /**************************************************************************//************************/
94 #define AC_SAMP_SEC 2
95 #define AC_MIN_BYTES 1000
98 #define AC_SAVE_PCT 5
101 #define AC_OFF_SEC 60 /*******************************/
104 
108 struct lzo_adaptive_compress {
109  bool compress_state;
110  time_t next;
111  int n_total;
112  int n_comp;
113 };
114 
115 
126 struct lzo_compress_workspace
127 {
128  lzo_voidp wmem;
129  int wmem_size;
130  struct lzo_adaptive_compress ac;
131 };
132 
136 #endif /* ENABLE_LZO && USE_COMP */
137 #endif /* ifndef OPENVPN_LZO_H */
mtu.h
buffer.h
common.h
status.h