2 This file is part of GNUnet
3 (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file transport/plugin_transport_wlan.h
23 * @brief header for transport plugin and the helper for wlan
24 * @author David Brodski
27 #ifndef PLUGIN_TRANSPORT_WLAN
28 #define PLUGIN_TRANSPORT_WLAN
31 #include "gnunet_common.h"
40 struct Wlan_Helper_Control_Message
42 struct GNUNET_MessageHeader hdr;
43 struct MacAddress mac;
47 * Header for messages which need fragmentation
49 struct FragmentationHeader
52 struct GNUNET_MessageHeader header;
55 * ID of message, to distinguish between the messages, picked randomly.
57 uint32_t message_id GNUNET_PACKED;
60 * Offset or number of this fragment, for fragmentation/segmentation (design choice, TBD)
62 uint16_t fragment_off_or_num GNUNET_PACKED;
65 * CRC of fragment (for error checking)
67 uint16_t message_crc GNUNET_PACKED;
69 // followed by payload
74 * Header for messages which need fragmentation
79 struct GNUNET_MessageHeader header;
82 * checksum/error correction
84 uint32_t crc GNUNET_PACKED;
87 * To whom are we talking to (set to our identity
88 * if we are still waiting for the welcome message)
90 struct GNUNET_PeerIdentity target;
92 // followed by payload
96 /* Wlan IEEE80211 header default */
97 //Informations (in German) http://www.umtslink.at/content/WLAN_macheader-196.html
98 static const uint8_t u8aIeeeHeader[] =
100 0x08, 0x01, // Frame Control 0x08= 00001000 -> | b1,2 = 0 -> Version 0;
101 // b3,4 = 10 -> Data; b5-8 = 0 -> Normal Data
102 // 0x01 = 00000001 -> | b1 = 1 to DS; b2 = 0 not from DS;
103 0x00, 0x00, // Duration/ID
104 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // mac1 - in this case receiver
105 0x13, 0x22, 0x33, 0x44, 0x55, 0x66, // mac2 - in this case sender
106 0x13, 0x22, 0x33, 0x44, 0x55, 0x66, // mac3 - in this case bssid
107 0x10, 0x86, //Sequence Control
111 static const struct MacAddress mac_bssid =
112 { { 0x13, 0x22, 0x33, 0x44, 0x55, 0x66 } } ;
115 static const struct MacAddress bc_all_mac =
116 { { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF } };
119 /* this is the template radiotap header we send packets out with */
121 static const uint8_t u8aRadiotapHeader[] =
123 0x00, 0x00, // <-- radiotap version
124 0x19, 0x00, // <- radiotap header length
125 0x6f, 0x08, 0x00, 0x00, // <-- bitmap
126 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // <-- timestamp
127 0x00, // <-- flags (Offset +0x10)
128 0x6c, // <-- rate (0ffset +0x11)
129 0x71, 0x09, 0xc0, 0x00, // <-- channel
130 0xde, // <-- antsignal
131 0x00, // <-- antnoise
148 * Transmit power expressed as unitless distance from max power set at factory calibration.
149 * 0 is max power. Monotonically nondecreasing with lower power levels.
155 // bit field defines for ri_present
159 #define has_channel 4
162 * struct to represent infos gathered form the radiotap fields
179 struct RadiotapHeader
186 u_int8_t pad_version;
189 * radiotap header length
191 uint16_t length GNUNET_PACKED;
194 * bitmap, fields present
196 uint32_t bitmap GNUNET_PACKED;
201 uint64_t timestamp GNUNET_PACKED;
213 // FIXME: unaligned here, is this OK?
217 uint32_t channel GNUNET_PACKED;