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authorDavid S. Miller <davem@davemloft.net>2008-06-14 17:15:39 -0700
committerDavid S. Miller <davem@davemloft.net>2008-06-14 17:15:39 -0700
commit942e7b102a4827fdb69a39c7f07c544542589ef9 (patch)
tree4c47174c91eb76aaa31abc141adbee1acc649987 /Documentation/networking
parent7d06b2e053d2d536348e3a0f6bb02982a41bea37 (diff)
parent87291c0269e77b029282676448fed3706a54211a (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/linville/wireless-next-2.6
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/mac80211_hwsim/README67
-rw-r--r--Documentation/networking/mac80211_hwsim/hostapd.conf11
-rw-r--r--Documentation/networking/mac80211_hwsim/wpa_supplicant.conf10
3 files changed, 88 insertions, 0 deletions
diff --git a/Documentation/networking/mac80211_hwsim/README b/Documentation/networking/mac80211_hwsim/README
new file mode 100644
index 00000000000..2ff8ccb8dc3
--- /dev/null
+++ b/Documentation/networking/mac80211_hwsim/README
@@ -0,0 +1,67 @@
+mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
+Copyright (c) 2008, Jouni Malinen <j@w1.fi>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License version 2 as
+published by the Free Software Foundation.
+
+
+Introduction
+
+mac80211_hwsim is a Linux kernel module that can be used to simulate
+arbitrary number of IEEE 802.11 radios for mac80211. It can be used to
+test most of the mac80211 functionality and user space tools (e.g.,
+hostapd and wpa_supplicant) in a way that matches very closely with
+the normal case of using real WLAN hardware. From the mac80211 view
+point, mac80211_hwsim is yet another hardware driver, i.e., no changes
+to mac80211 are needed to use this testing tool.
+
+The main goal for mac80211_hwsim is to make it easier for developers
+to test their code and work with new features to mac80211, hostapd,
+and wpa_supplicant. The simulated radios do not have the limitations
+of real hardware, so it is easy to generate an arbitrary test setup
+and always reproduce the same setup for future tests. In addition,
+since all radio operation is simulated, any channel can be used in
+tests regardless of regulatory rules.
+
+mac80211_hwsim kernel module has a parameter 'radios' that can be used
+to select how many radios are simulated (default 2). This allows
+configuration of both very simply setups (e.g., just a single access
+point and a station) or large scale tests (multiple access points with
+hundreds of stations).
+
+mac80211_hwsim works by tracking the current channel of each virtual
+radio and copying all transmitted frames to all other radios that are
+currently enabled and on the same channel as the transmitting
+radio. Software encryption in mac80211 is used so that the frames are
+actually encrypted over the virtual air interface to allow more
+complete testing of encryption.
+
+A global monitoring netdev, hwsim#, is created independent of
+mac80211. This interface can be used to monitor all transmitted frames
+regardless of channel.
+
+
+Simple example
+
+This example shows how to use mac80211_hwsim to simulate two radios:
+one to act as an access point and the other as a station that
+associates with the AP. hostapd and wpa_supplicant are used to take
+care of WPA2-PSK authentication. In addition, hostapd is also
+processing access point side of association.
+
+Please note that the current Linux kernel does not enable AP mode, so a
+simple patch is needed to enable AP mode selection:
+http://johannes.sipsolutions.net/patches/kernel/all/LATEST/006-allow-ap-vlan-modes.patch
+
+
+# Build mac80211_hwsim as part of kernel configuration
+
+# Load the module
+modprobe mac80211_hwsim
+
+# Run hostapd (AP) for wlan0
+hostapd hostapd.conf
+
+# Run wpa_supplicant (station) for wlan1
+wpa_supplicant -Dwext -iwlan1 -c wpa_supplicant.conf
diff --git a/Documentation/networking/mac80211_hwsim/hostapd.conf b/Documentation/networking/mac80211_hwsim/hostapd.conf
new file mode 100644
index 00000000000..08cde7e35f2
--- /dev/null
+++ b/Documentation/networking/mac80211_hwsim/hostapd.conf
@@ -0,0 +1,11 @@
+interface=wlan0
+driver=nl80211
+
+hw_mode=g
+channel=1
+ssid=mac80211 test
+
+wpa=2
+wpa_key_mgmt=WPA-PSK
+wpa_pairwise=CCMP
+wpa_passphrase=12345678
diff --git a/Documentation/networking/mac80211_hwsim/wpa_supplicant.conf b/Documentation/networking/mac80211_hwsim/wpa_supplicant.conf
new file mode 100644
index 00000000000..299128cff03
--- /dev/null
+++ b/Documentation/networking/mac80211_hwsim/wpa_supplicant.conf
@@ -0,0 +1,10 @@
+ctrl_interface=/var/run/wpa_supplicant
+
+network={
+ ssid="mac80211 test"
+ psk="12345678"
+ key_mgmt=WPA-PSK
+ proto=WPA2
+ pairwise=CCMP
+ group=CCMP
+}