mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-12-22 13:02:44 +01:00
267 lines
7.4 KiB
Plaintext
267 lines
7.4 KiB
Plaintext
Wireless daemon for Linux
|
|
*************************
|
|
|
|
Copyright (C) 2013-2018 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
|
|
- readline (command line client)
|
|
|
|
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.
|
|
|
|
When using --enable-external-ell build option, it is not required that the
|
|
Embedded Linux library source code is available in the top level directory.
|
|
|
|
|
|
Configuration and options
|
|
=========================
|
|
|
|
The configuration system provides switches to disable certain build time
|
|
configuration options which are generally useful and enabled by default:
|
|
|
|
--disable-daemon
|
|
|
|
Disable installation of Wireless daemon
|
|
|
|
By default the Wireless daemon binary iwd is enabled and
|
|
placed into --libexecdir directory.
|
|
|
|
--disable-client
|
|
|
|
Disable installation of Wireless client utility
|
|
|
|
By default the Wireless client binary iwctl is enabled
|
|
and place into --bindir directory.
|
|
|
|
--disable-monitor
|
|
|
|
Disable installation of Wireless monitor utility
|
|
|
|
By default the Wireless monitor binary iwmon is enabled
|
|
and place into --bindir directory.
|
|
|
|
--disable-dbus-policy
|
|
|
|
Disable installation of D-Bus system policy configuration
|
|
|
|
By default the accompanying D-Bus policy file will be
|
|
installed in the D-Bus data directory. The location of
|
|
that directory will be automatically detected or can be
|
|
manually configured via the --with-dbus-datadir option.
|
|
|
|
The D-Bus policy is required for daemons to gain service
|
|
name ownership and clients to access them. When disabling
|
|
this option, manual installation of D-Bus polices is
|
|
required.
|
|
|
|
Note: This option affects all D-Bus policy configurations.
|
|
|
|
--disable-systemd-service
|
|
|
|
Disable installation of systemd service configuration
|
|
|
|
By default the accompanying systemd service unit with
|
|
D-Bus autostart configuration will be installed. The
|
|
locations will be automatically detected or can be
|
|
manually configured via --with-dbus-busdir option
|
|
and --with-systemd-unitdir option.
|
|
|
|
Using systemd is optional, but highly recommended. When
|
|
disabling this option, manual installation is required.
|
|
|
|
Note: This option affects all systemd unit setups.
|
|
|
|
When building for a system that wants to use wireless technology, disabling
|
|
any of the above options makes only limited sense. It may break the general
|
|
setup and usability for wireless connections.
|
|
|
|
The configuration system provides switches for optional build time features
|
|
that can be enabled if the functionality is required:
|
|
|
|
--enable-external-ell
|
|
|
|
Enable usage of external Embedded Linux library
|
|
|
|
This allows using an externally installed Embedded Linux
|
|
library instead of using the internal copy of ELL.
|
|
|
|
Since the public API of Embedded Linux library is not yet
|
|
stable, the usage of the internal ELL copy is preferred.
|
|
|
|
|
|
|
|
|
|
|
|
--enable-wired
|
|
|
|
Enable installation of Ethernet authentication daemon
|
|
|
|
This allows enabling the Ethernet daemon binary ead which
|
|
is then placed into --libexecdir directory.
|
|
|
|
With this option the support for 802.1x for wired Ethernet
|
|
connections can be enabled. It provides its own D-Bus
|
|
policy and systemd configuration.
|
|
|
|
--enable-hwsim
|
|
|
|
Enable installation of Wireless simulation utility
|
|
|
|
This allows enabling the Simulation daemon binary hwsim
|
|
which is then placed into --bindir directory.
|
|
|
|
With this utility and mac80211_hwim kernel module the
|
|
simulation of 802.11 networks can be tested. It provides
|
|
its own D-Bus policy configuration.
|
|
|
|
This utility is only useful for developers and should not
|
|
be considered for general installation. For this reason
|
|
no systemd configuration is provided.
|
|
|
|
--enable-tools
|
|
|
|
Enable compilation of various testing utilities
|
|
|
|
This enables building of all utilities that are however
|
|
not installed and only useful during development.
|
|
|
|
--enable-ofono
|
|
|
|
Enable support for oFono SIM authentication
|
|
|
|
Note: With --disable-daemon this option is ignored
|
|
|
|
--enable-sim-hardcoded
|
|
|
|
Enable support for hard coded SIM keys
|
|
|
|
Note: With --disable-daemon this option is ignored
|
|
|
|
--enable-docs
|
|
|
|
Enable generation of documentation and manual pages
|
|
|
|
Note: This option does not provide any value right now
|
|
|
|
|
|
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
|
|
|
|
Wiki:
|
|
https://iwd.wiki.kernel.org/
|