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- /*
- This file is part of GNUnet
- Copyright (C) 2010, 2011 GNUnet e.V.
- GNUnet is free software: you can redistribute it and/or modify it
- under the terms of the GNU Affero General Public License as published
- by the Free Software Foundation, either version 3 of the License,
- or (at your option) any later version.
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Affero General Public License for more details.
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- SPDX-License-Identifier: AGPL3.0-or-later
- */
- /**
- * @file transport/plugin_transport_wlan.h
- * @brief header for transport plugin and the helper for wlan
- * @author David Brodski
- */
- #ifndef PLUGIN_TRANSPORT_WLAN
- #define PLUGIN_TRANSPORT_WLAN
- #include "gnunet_crypto_lib.h"
- #include "gnunet_common.h"
- /**
- * Number fo bytes in a mac address.
- */
- #ifdef MINGW
- #define MAC_ADDR_SIZE 8
- typedef uint8_t u_int8_t;
- #else
- #define MAC_ADDR_SIZE 6
- #endif
- /**
- * Value for "Management" in the 'frame_control' field of the
- * struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame.
- */
- #define IEEE80211_FC0_TYPE_MGT 0x00
- /**
- * Value for "Control" in the 'frame_control' field of the
- * struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame.
- */
- #define IEEE80211_FC0_TYPE_CTL 0x04
- /**
- * Value for DATA in the 'frame_control' field of the
- * struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame.
- */
- #define IEEE80211_FC0_TYPE_DATA 0x08
- GNUNET_NETWORK_STRUCT_BEGIN
- /**
- * A MAC Address.
- */
- struct GNUNET_TRANSPORT_WLAN_MacAddress
- {
- uint8_t mac[MAC_ADDR_SIZE];
- };
- /**
- * Format of a WLAN Control Message.
- */
- struct GNUNET_TRANSPORT_WLAN_HelperControlMessage
- {
- /**
- * Message header. Type is
- * GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL
- */
- struct GNUNET_MessageHeader hdr;
- /**
- * MAC Address of the local WLAN interface.
- */
- struct GNUNET_TRANSPORT_WLAN_MacAddress mac;
- };
- /**
- * generic definitions for IEEE 802.3 frames
- */
- struct GNUNET_TRANSPORT_WLAN_Ieee8023Frame
- {
- /**
- * Address 1: destination address in ad-hoc mode or AP, BSSID if station,
- */
- struct GNUNET_TRANSPORT_WLAN_MacAddress dst;
- /**
- * Address 2: source address if in ad-hoc-mode or station, BSSID if AP
- */
- struct GNUNET_TRANSPORT_WLAN_MacAddress src;
- /**
- * Packet type ID.
- */
- uint16_t type;
- };
- /**
- * generic definitions for IEEE 802.11 frames
- */
- struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame
- {
- /**
- * 802.11 Frame Control field. A bitmask. The overall field is a
- * 16-bit mask of the respecitve fields. The lowest two bits should
- * be 0, then comes the "type" (2 bits, see IEEE80211_FC0_TYPE_*
- * constants), followed by 4-bit subtype (all zeros for ad-hoc),
- * followed by various flags (to DS, from DS, more frag, retry,
- * power management, more data, WEP, strict), all of which we also
- * keep at zero.
- */
- uint16_t frame_control GNUNET_PACKED;
- /**
- * Microseconds to reserve link (duration), 0 by default
- */
- uint16_t duration GNUNET_PACKED;
- /**
- * Address 1: destination address in ad-hoc mode or AP, BSSID if station,
- */
- struct GNUNET_TRANSPORT_WLAN_MacAddress addr1;
- /**
- * Address 2: source address if in ad-hoc-mode or station, BSSID if AP
- */
- struct GNUNET_TRANSPORT_WLAN_MacAddress addr2;
- /**
- * Address 3: BSSID in ad-hoc mode, Destination if station, source if AP
- */
- struct GNUNET_TRANSPORT_WLAN_MacAddress addr3;
- /**
- * 802.11 sequence control field; contains fragment number an sequence
- * number (we set this to all zeros).
- */
- uint16_t sequence_control GNUNET_PACKED;
- /**
- * Link layer control (LLC). Set to a GNUnet-specific value.
- */
- u_int8_t llc[4];
- /* payload */
- } GNUNET_PACKED;
- /**
- * Message from the plugin to the WLAN helper: send the given message with the
- * given connection parameters.
- */
- struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage
- {
- /**
- * Type is 'GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER'.
- */
- struct GNUNET_MessageHeader header;
- /**
- * wlan send rate
- */
- uint8_t rate;
- /**
- * Antenna; the first antenna is 0.
- */
- uint8_t antenna;
- /**
- * Transmit power expressed as unitless distance from max power set at factory calibration.
- * 0 is max power. Monotonically nondecreasing with lower power levels.
- */
- uint16_t tx_power GNUNET_PACKED;
- /**
- * IEEE Frame to transmit (the sender MAC address will be overwritten by the helper as it does not
- * trust the plugin to set it correctly).
- */
- struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame frame;
- /* actual payload follows */
- };
- /**
- * Message from the WLAN helper to the plugin: we have received the given message with the
- * given performance characteristics.
- */
- /**
- * struct to represent infos gathered form the radiotap fields, see RadiotapHeader for more Infos
- */
- struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage
- {
- /**
- * Type is 'GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER'.
- */
- struct GNUNET_MessageHeader header;
- /**
- * Information about which of the fields below are actually valid.
- * 0 for none. FIXME: not properly initialized so far (always zero).
- */
- uint32_t ri_present GNUNET_PACKED;
- /**
- * IEEE80211_RADIOTAP_TSFT, 0 if unknown.
- */
- uint64_t ri_mactime GNUNET_PACKED;
- /**
- * from radiotap
- * either IEEE80211_RADIOTAP_DBM_ANTSIGNAL
- * or IEEE80211_RADIOTAP_DB_ANTSIGNAL, 0 if unknown.
- */
- int32_t ri_power GNUNET_PACKED;
- /**
- * either IEEE80211_RADIOTAP_DBM_ANTNOISE
- * or IEEE80211_RADIOTAP_DB_ANTNOISE, 0 if unknown.
- */
- int32_t ri_noise GNUNET_PACKED;
- /**
- * IEEE80211_RADIOTAP_CHANNEL, 0 if unknown.
- */
- uint32_t ri_channel GNUNET_PACKED;
- /**
- * Frequency we use. 0 if unknown.
- */
- uint32_t ri_freq GNUNET_PACKED;
- /**
- * IEEE80211_RADIOTAP_RATE * 50000, 0 if unknown.
- */
- uint32_t ri_rate GNUNET_PACKED;
- /**
- * IEEE80211_RADIOTAP_ANTENNA, 0 if unknown.
- */
- uint32_t ri_antenna GNUNET_PACKED;
- /**
- * IEEE Frame.
- */
- struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame frame;
- /* followed by payload */
- };
- GNUNET_NETWORK_STRUCT_END
- /**
- * GNUnet bssid
- */
- static const struct GNUNET_TRANSPORT_WLAN_MacAddress mac_bssid_gnunet = {
- {0x13, 0x22, 0x33, 0x44, 0x55, 0x66}
- };
- /**
- * Broadcast MAC
- */
- static const struct GNUNET_TRANSPORT_WLAN_MacAddress bc_all_mac = {
- {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}
- };
- #endif
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