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3 Copyright (C) 2010, 2011 GNUnet e.V.
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
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11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
18 SPDX-License-Identifier: AGPL3.0-or-later
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
29 #include "gnunet_crypto_lib.h"
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;
84 * generic definitions for IEEE 802.3 frames
86 struct GNUNET_TRANSPORT_WLAN_Ieee8023Frame
89 * Address 1: destination address in ad-hoc mode or AP, BSSID if station,
91 struct GNUNET_TRANSPORT_WLAN_MacAddress dst;
94 * Address 2: source address if in ad-hoc-mode or station, BSSID if AP
96 struct GNUNET_TRANSPORT_WLAN_MacAddress src;
106 * generic definitions for IEEE 802.11 frames
108 struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame
111 * 802.11 Frame Control field. A bitmask. The overall field is a
112 * 16-bit mask of the respecitve fields. The lowest two bits should
113 * be 0, then comes the "type" (2 bits, see IEEE80211_FC0_TYPE_*
114 * constants), followed by 4-bit subtype (all zeros for ad-hoc),
115 * followed by various flags (to DS, from DS, more frag, retry,
116 * power management, more data, WEP, strict), all of which we also
119 uint16_t frame_control GNUNET_PACKED;
122 * Microseconds to reserve link (duration), 0 by default
124 uint16_t duration GNUNET_PACKED;
127 * Address 1: destination address in ad-hoc mode or AP, BSSID if station,
129 struct GNUNET_TRANSPORT_WLAN_MacAddress addr1;
132 * Address 2: source address if in ad-hoc-mode or station, BSSID if AP
134 struct GNUNET_TRANSPORT_WLAN_MacAddress addr2;
137 * Address 3: BSSID in ad-hoc mode, Destination if station, source if AP
139 struct GNUNET_TRANSPORT_WLAN_MacAddress addr3;
142 * 802.11 sequence control field; contains fragment number an sequence
143 * number (we set this to all zeros).
145 uint16_t sequence_control GNUNET_PACKED;
148 * Link layer control (LLC). Set to a GNUnet-specific value.
157 * Message from the plugin to the WLAN helper: send the given message with the
158 * given connection parameters.
160 struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage
163 * Type is 'GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER'.
165 struct GNUNET_MessageHeader header;
173 * Antenna; the first antenna is 0.
178 * Transmit power expressed as unitless distance from max power set at factory calibration.
179 * 0 is max power. Monotonically nondecreasing with lower power levels.
181 uint16_t tx_power GNUNET_PACKED;
184 * IEEE Frame to transmit (the sender MAC address will be overwritten by the helper as it does not
185 * trust the plugin to set it correctly).
187 struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame frame;
189 /* actual payload follows */
194 * Message from the WLAN helper to the plugin: we have received the given message with the
195 * given performance characteristics.
198 * struct to represent infos gathered form the radiotap fields, see RadiotapHeader for more Infos
200 struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage
203 * Type is 'GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER'.
205 struct GNUNET_MessageHeader header;
208 * Information about which of the fields below are actually valid.
209 * 0 for none. FIXME: not properly initialized so far (always zero).
211 uint32_t ri_present GNUNET_PACKED;
214 * IEEE80211_RADIOTAP_TSFT, 0 if unknown.
216 uint64_t ri_mactime GNUNET_PACKED;
220 * either IEEE80211_RADIOTAP_DBM_ANTSIGNAL
221 * or IEEE80211_RADIOTAP_DB_ANTSIGNAL, 0 if unknown.
223 int32_t ri_power GNUNET_PACKED;
226 * either IEEE80211_RADIOTAP_DBM_ANTNOISE
227 * or IEEE80211_RADIOTAP_DB_ANTNOISE, 0 if unknown.
229 int32_t ri_noise GNUNET_PACKED;
232 * IEEE80211_RADIOTAP_CHANNEL, 0 if unknown.
234 uint32_t ri_channel GNUNET_PACKED;
237 * Frequency we use. 0 if unknown.
239 uint32_t ri_freq GNUNET_PACKED;
242 * IEEE80211_RADIOTAP_RATE * 50000, 0 if unknown.
244 uint32_t ri_rate GNUNET_PACKED;
247 * IEEE80211_RADIOTAP_ANTENNA, 0 if unknown.
249 uint32_t ri_antenna GNUNET_PACKED;
254 struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame frame;
256 /* followed by payload */
259 GNUNET_NETWORK_STRUCT_END
264 static const struct GNUNET_TRANSPORT_WLAN_MacAddress mac_bssid_gnunet = {
265 { 0x13, 0x22, 0x33, 0x44, 0x55, 0x66 }
272 static const struct GNUNET_TRANSPORT_WLAN_MacAddress bc_all_mac = {
273 { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }