2 This file is part of GNUnet
3 (C) 2010, 2011 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;
46 * Header for messages which need fragmentation
51 struct GNUNET_MessageHeader header;
54 * checksum/error correction
56 uint32_t crc GNUNET_PACKED;
59 * To whom are we talking to (set to our identity
60 * if we are still waiting for the welcome message)
62 struct GNUNET_PeerIdentity target;
65 * Where the packet came from
67 struct GNUNET_PeerIdentity source;
69 // followed by payload
73 /* Wlan IEEE80211 header default */
74 //Informations (in German) http://www.umtslink.at/content/WLAN_macheader-196.html
75 static const uint8_t u8aIeeeHeader[] = { 0x08, 0x01, // Frame Control 0x08= 00001000 -> | b1,2 = 0 -> Version 0;
76 // b3,4 = 10 -> Data; b5-8 = 0 -> Normal Data
77 // 0x01 = 00000001 -> | b1 = 1 to DS; b2 = 0 not from DS;
78 0x00, 0x00, // Duration/ID
79 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // mac1 - in this case receiver
80 0x13, 0x22, 0x33, 0x44, 0x55, 0x66, // mac2 - in this case sender
81 0x13, 0x22, 0x33, 0x44, 0x55, 0x66, // mac3 - in this case bssid
82 0x10, 0x86, //Sequence Control
86 static const struct MacAddress mac_bssid = {
87 {0x13, 0x22, 0x33, 0x44, 0x55, 0x66}
91 static const struct MacAddress bc_all_mac = {
92 {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}
95 /* this is the template radiotap header we send packets out with */
97 static const uint8_t u8aRadiotapHeader[] = { 0x00, 0x00, // <-- radiotap version
98 0x19, 0x00, // <- radiotap header length
99 0x6f, 0x08, 0x00, 0x00, // <-- bitmap
100 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // <-- timestamp
101 0x00, // <-- flags (Offset +0x10)
102 0x6c, // <-- rate (0ffset +0x11)
103 0x71, 0x09, 0xc0, 0x00, // <-- channel
104 0xde, // <-- antsignal
105 0x00, // <-- antnoise
122 * Transmit power expressed as unitless distance from max power set at factory calibration.
123 * 0 is max power. Monotonically nondecreasing with lower power levels.
129 // bit field defines for ri_present
133 #define has_channel 4
136 * struct to represent infos gathered form the radiotap fields, see RadiotapHeader for more Infos
143 * IEEE80211_RADIOTAP_TSFT
148 * either IEEE80211_RADIOTAP_DBM_ANTSIGNAL
149 * or IEEE80211_RADIOTAP_DB_ANTSIGNAL
153 * either IEEE80211_RADIOTAP_DBM_ANTNOISE
154 * or IEEE80211_RADIOTAP_DB_ANTNOISE
158 * IEEE80211_RADIOTAP_CHANNEL
164 * IEEE80211_RADIOTAP_RATE * 50000
168 * IEEE80211_RADIOTAP_ANTENNA
176 struct RadiotapHeader
183 u_int8_t pad_version;
186 * radiotap header length
188 uint16_t length GNUNET_PACKED;
191 * bitmap, fields present
193 uint32_t bitmap GNUNET_PACKED;
198 uint64_t timestamp GNUNET_PACKED;
210 // FIXME: unaligned here, is this OK?
214 uint32_t channel GNUNET_PACKED;