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"
38 struct Wlan_Helper_Control_Message
40 struct GNUNET_MessageHeader hdr;
41 struct MacAddress mac;
45 * Header for messages which need fragmentation
47 struct FragmentationHeader
50 struct GNUNET_MessageHeader header;
53 * ID of message, to distinguish between the messages, picked randomly.
55 uint32_t message_id GNUNET_PACKED;
58 * Offset or number of this fragment, for fragmentation/segmentation (design choice, TBD)
60 uint16_t fragment_off_or_num GNUNET_PACKED;
63 * CRC of fragment (for error checking)
65 uint16_t message_crc GNUNET_PACKED;
67 // followed by payload
72 * Header for messages which need fragmentation
77 struct GNUNET_MessageHeader header;
80 * checksum/error correction
82 uint32_t crc GNUNET_PACKED;
85 * To whom are we talking to (set to our identity
86 * if we are still waiting for the welcome message)
88 struct GNUNET_PeerIdentity target;
91 * Where the packet came from
93 struct GNUNET_PeerIdentity source;
95 // followed by payload
99 /* Wlan IEEE80211 header default */
100 //Informations (in German) http://www.umtslink.at/content/WLAN_macheader-196.html
101 static const uint8_t u8aIeeeHeader[] =
102 { 0x08, 0x01, // Frame Control 0x08= 00001000 -> | b1,2 = 0 -> Version 0;
103 // b3,4 = 10 -> Data; b5-8 = 0 -> Normal Data
104 // 0x01 = 00000001 -> | b1 = 1 to DS; b2 = 0 not from DS;
105 0x00, 0x00, // Duration/ID
106 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // mac1 - in this case receiver
107 0x13, 0x22, 0x33, 0x44, 0x55, 0x66, // mac2 - in this case sender
108 0x13, 0x22, 0x33, 0x44, 0x55, 0x66, // mac3 - in this case bssid
109 0x10, 0x86, //Sequence Control
113 static const struct MacAddress mac_bssid =
115 { 0x13, 0x22, 0x33, 0x44, 0x55, 0x66 } };
118 static const struct MacAddress bc_all_mac =
120 { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF } };
122 /* this is the template radiotap header we send packets out with */
124 static const uint8_t u8aRadiotapHeader[] =
125 { 0x00, 0x00, // <-- radiotap version
126 0x19, 0x00, // <- radiotap header length
127 0x6f, 0x08, 0x00, 0x00, // <-- bitmap
128 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // <-- timestamp
129 0x00, // <-- flags (Offset +0x10)
130 0x6c, // <-- rate (0ffset +0x11)
131 0x71, 0x09, 0xc0, 0x00, // <-- channel
132 0xde, // <-- antsignal
133 0x00, // <-- antnoise
150 * Transmit power expressed as unitless distance from max power set at factory calibration.
151 * 0 is max power. Monotonically nondecreasing with lower power levels.
157 // bit field defines for ri_present
161 #define has_channel 4
164 * struct to represent infos gathered form the radiotap fields
182 struct RadiotapHeader
189 u_int8_t pad_version;
192 * radiotap header length
194 uint16_t length GNUNET_PACKED;
197 * bitmap, fields present
199 uint32_t bitmap GNUNET_PACKED;
204 uint64_t timestamp GNUNET_PACKED;
216 // FIXME: unaligned here, is this OK?
220 uint32_t channel GNUNET_PACKED;