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
26 #ifndef PLUGIN_TRANSPORT_WLAN
27 #define PLUGIN_TRANSPORT_WLAN
30 #include "gnunet_common.h"
33 * Number fo bytes in a mac address.
35 #define MAC_ADDR_SIZE 6
38 * Value for "Management" in the 'frame_control' field of the
39 * struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame.
41 #define IEEE80211_FC0_TYPE_MGT 0x00
44 * Value for "Control" in the 'frame_control' field of the
45 * struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame.
47 #define IEEE80211_FC0_TYPE_CTL 0x04
50 * Value for DATA in the 'frame_control' field of the
51 * struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame.
53 #define IEEE80211_FC0_TYPE_DATA 0x08
56 GNUNET_NETWORK_STRUCT_BEGIN
61 struct GNUNET_TRANSPORT_WLAN_MacAddress
63 uint8_t mac[MAC_ADDR_SIZE];
67 * Format of a WLAN Control Message.
69 struct GNUNET_TRANSPORT_WLAN_HelperControlMessage
72 * Message header. Type is
73 * GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL
75 struct GNUNET_MessageHeader hdr;
78 * MAC Address of the local WLAN interface.
80 struct GNUNET_TRANSPORT_WLAN_MacAddress mac;
85 * generic definitions for IEEE 802.11 frames
87 struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame
90 * 802.11 Frame Control field. A bitmask. The overall field is a
91 * 16-bit mask of the respecitve fields. The lowest two bits should
92 * be 0, then comes the "type" (2 bits, see IEEE80211_FC0_TYPE_*
93 * constants), followed by 4-bit subtype (all zeros for ad-hoc),
94 * followed by various flags (to DS, from DS, more frag, retry,
95 * power management, more data, WEP, strict), all of which we also
98 uint16_t frame_control GNUNET_PACKED;
101 * Microseconds to reserve link (duration), 0 by default
103 uint16_t duration GNUNET_PACKED;
106 * Address 1: destination address in ad-hoc mode or AP, BSSID if station,
108 struct GNUNET_TRANSPORT_WLAN_MacAddress addr1;
111 * Address 2: source address if in ad-hoc-mode or station, BSSID if AP
113 struct GNUNET_TRANSPORT_WLAN_MacAddress addr2;
116 * Address 3: BSSID in ad-hoc mode, Destination if station, source if AP
118 struct GNUNET_TRANSPORT_WLAN_MacAddress addr3;
121 * 802.11 sequence control field; contains fragment number an sequence
122 * number (we set this to all zeros).
124 uint16_t sequence_control GNUNET_PACKED;
127 * Link layer control (LLC). Set to a GNUnet-specific value.
138 * Message from the plugin to the WLAN helper: send the given message with the
139 * given connection parameters.
141 struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage
145 * Type is 'GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER'.
147 struct GNUNET_MessageHeader header;
155 * Antenna; the first antenna is 0.
160 * Transmit power expressed as unitless distance from max power set at factory calibration.
161 * 0 is max power. Monotonically nondecreasing with lower power levels.
163 uint16_t tx_power GNUNET_PACKED;
166 * IEEE Frame to transmit (the sender MAC address will be overwritten by the helper as it does not
167 * trust the plugin to set it correctly).
169 struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame frame;
171 /* actual payload follows */
176 * Message from the WLAN helper to the plugin: we have received the given message with the
177 * given performance characteristics.
180 * struct to represent infos gathered form the radiotap fields, see RadiotapHeader for more Infos
182 struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage
186 * Type is 'GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER'.
188 struct GNUNET_MessageHeader header;
191 * Information about which of the fields below are actually valid.
192 * 0 for none. FIXME: not properly initialized so far (always zero).
194 uint32_t ri_present GNUNET_PACKED;
197 * IEEE80211_RADIOTAP_TSFT, 0 if unknown.
199 uint64_t ri_mactime GNUNET_PACKED;
203 * either IEEE80211_RADIOTAP_DBM_ANTSIGNAL
204 * or IEEE80211_RADIOTAP_DB_ANTSIGNAL, 0 if unknown.
206 int32_t ri_power GNUNET_PACKED;
209 * either IEEE80211_RADIOTAP_DBM_ANTNOISE
210 * or IEEE80211_RADIOTAP_DB_ANTNOISE, 0 if unknown.
212 int32_t ri_noise GNUNET_PACKED;
215 * IEEE80211_RADIOTAP_CHANNEL, 0 if unknown.
217 uint32_t ri_channel GNUNET_PACKED;
220 * Frequency we use. 0 if unknown.
222 uint32_t ri_freq GNUNET_PACKED;
225 * IEEE80211_RADIOTAP_RATE * 50000, 0 if unknown.
227 uint32_t ri_rate GNUNET_PACKED;
230 * IEEE80211_RADIOTAP_ANTENNA, 0 if unknown.
232 uint32_t ri_antenna GNUNET_PACKED;
237 struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame frame;
239 /* followed by payload */
242 GNUNET_NETWORK_STRUCT_END
247 static const struct GNUNET_TRANSPORT_WLAN_MacAddress mac_bssid_gnunet = {
248 {0x13, 0x22, 0x33, 0x44, 0x55, 0x66}
255 static const struct GNUNET_TRANSPORT_WLAN_MacAddress bc_all_mac = {
256 {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}