The iNet Wireless Daemon (iwd) project aims to provide a comprehensive Wi-Fi connectivity solution for Linux based devices. The core goal of the project is to optimize resource utilization: storage, runtime memory and link-time costs.
https://iwd.wiki.kernel.org/
a68e958f29
If the device mode it toggled from 'ap' back to 'station' without actually starting the access point ap_free attempts to zero out the psk, which causes a crash because it had never been allocated (Start() never was called). Since ap->psk is actually never used this was removed. Also added a memset to zero out the pmk on cleanup. This is the crash observed: ++++++++ backtrace ++++++++ 0 0x7f6ffe978a80 in /lib64/libc.so.6 1 0x7f6ffe9d6766 in /lib64/libc.so.6 2 0x42dd51 in memset() at /usr/include/bits/string3.h:90 3 0x42ddd9 in ap_free() at src/ap.c:144 4 0x445ec6 in interface_instance_free() at ell/dbus-service.c:513 5 0x448650 in _dbus_object_tree_remove_interface() at ell/dbus-service.c:1595 6 0x40d980 in device_set_mode_sta() at src/device.c:2113 7 0x447d4c in properties_set() at ell/dbus-service.c:1861 8 0x448a33 in _dbus_object_tree_dispatch() at ell/dbus-service.c:1691 9 0x442587 in message_read_handler() at ell/dbus.c:285 10 0x43cac9 in io_callback() at ell/io.c:123 11 0x43bf5e in l_main_iterate() at ell/main.c:376 12 0x43c01c in l_main_run() at ell/main.c:419 13 0x40379d in main() at src/main.c:460 14 0x7f6ffe96288a in /lib64/libc.so.6 +++++++++++++++++++++++++++ |
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| autotests | ||
| client | ||
| doc | ||
| linux | ||
| monitor | ||
| plugins | ||
| src | ||
| test | ||
| tools | ||
| unit | ||
| .gitignore | ||
| AUTHORS | ||
| COPYING | ||
| ChangeLog | ||
| HACKING | ||
| INSTALL | ||
| Makefile.am | ||
| README | ||
| TODO | ||
| acinclude.m4 | ||
| bootstrap | ||
| bootstrap-configure | ||
| configure.ac | ||
README
Wireless daemon for Linux ************************* Copyright (C) 2013-2014 Intel Corporation. All rights reserved. Compilation and installation ============================ In order to compile the source code you need following software packages: - GCC compiler - GNU C library - Embedded Linux library To configure run: ./configure --prefix=/usr Configure automatically searches for all required components and packages. To compile and install run: make && make install Embedded Linux library ====================== In order to compile the daemon and control utility the development version of Embedded Linux library is required to be present. The development repositories can be found here: git://git.kernel.org/pub/scm/libs/ell/ell.git https://kernel.googlesource.com/pub/scm/libs/ell/ell.git The build systems requires that the Embedded Linux library source code is available on the same top level directory as the Wireless daemon source code: . |--- ell | |--- ell | `--- unit `--- iwd |--- src `--- client It is not required to build or install Embedded Linux library. The build will happen when building the Wireless daemon and it will then be linked internally. Netlink monitoring ================== The included iwmon utility can be used to monitor the 802.11 subsystem generic netlink commands and events. It uses the nlmon kernel driver from Linux 3.10 and later. On startup network monitor interface named named 'nlmon' is created unless another interface name is given on the command line. If the monitor interface was created by the iwmon utility, it will be removed on program exit. Manually the monitor interface can be created using the following commands: ip link add name nlmon type nlmon ip link set dev nlmon allmulticast on ip link set dev nlmon up It is possible to create netlink traces in PCAP format using tcpdump and then read them via iwmon utility: tcpdump -i nlmon -w trace-file.pcap The resulting PCAP files will use Linux cooked packet format containing packets with ARPHRD_NETLINK type. They can be read using iwmon: iwmon -r trace-file.pcap At this time iwmon is not able to write PCAP files by itself. This might change in future versions. When also the authentication protocol traffic on port 0x888e (ETH_P_PAE) is needed, then a second capture is required: tcpdump -i any 'ether proto 0x888e' -w trace-pae.pcap It is possible to combine these two PCAP files using the mergecap utility and create a combined trace file: mergecap -F pcap -w trace.pcap trace-file.pcap trace-pae.pcap This will create a trace.pcap file that includes the complete picture of nl80211 netlink traffic and authentication messages. All packets are merged in chronological order based on timestamps. Unfortunately it is not possible to instruct tcpdump filtering to do this in a single capture. Post-processing of the PCAP files is required at the moment. Simulating devices ================== The Linux driver mac80211_hwsim provides the functionality to simulate Wireless devices using fake virtual air. Just load the module. modprobe mac80211_hwsim radios=0 Providing the radios=0 is important since otherwise it starts out with two new Wireless radios by default. With the provided hwsim utility it is now possible to add and remove virtual radio devices. hwsim --create --keep hwsim --destroy=<radio-id> The radio id assigned to each virtual device is its internal id used by the Wireless device. Information =========== Mailing list: https://lists.01.org/mailman/listinfo/iwd IRC: irc://irc.freenode.net/#iwd