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246
Documentation/networking/README.ipw2100 Normal file
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===========================
Intel(R) PRO/Wireless 2100 Network Connection Driver for Linux
README.ipw2100
March 14, 2005
===========================
Index
---------------------------
0. Introduction
1. Release 1.1.0 Current Features
2. Command Line Parameters
3. Sysfs Helper Files
4. Radio Kill Switch
5. Dynamic Firmware
6. Power Management
7. Support
8. License
===========================
0. Introduction
------------ ----- ----- ---- --- -- -
This document provides a brief overview of the features supported by the
IPW2100 driver project. The main project website, where the latest
development version of the driver can be found, is:
http://ipw2100.sourceforge.net
There you can find the not only the latest releases, but also information about
potential fixes and patches, as well as links to the development mailing list
for the driver project.
===========================
1. Release 1.1.0 Current Supported Features
---------------------------
- Managed (BSS) and Ad-Hoc (IBSS)
- WEP (shared key and open)
- Wireless Tools support
- 802.1x (tested with XSupplicant 1.0.1)
Enabled (but not supported) features:
- Monitor/RFMon mode
- WPA/WPA2
The distinction between officially supported and enabled is a reflection
on the amount of validation and interoperability testing that has been
performed on a given feature.
===========================
2. Command Line Parameters
---------------------------
If the driver is built as a module, the following optional parameters are used
by entering them on the command line with the modprobe command using this
syntax:
modprobe ipw2100 [<option>=<VAL1><,VAL2>...]
For example, to disable the radio on driver loading, enter:
modprobe ipw2100 disable=1
The ipw2100 driver supports the following module parameters:
Name Value Example:
debug 0x0-0xffffffff debug=1024
mode 0,1,2 mode=1 /* AdHoc */
channel int channel=3 /* Only valid in AdHoc or Monitor */
associate boolean associate=0 /* Do NOT auto associate */
disable boolean disable=1 /* Do not power the HW */
===========================
3. Sysfs Helper Files
---------------------------
There are several ways to control the behavior of the driver. Many of the
general capabilities are exposed through the Wireless Tools (iwconfig). There
are a few capabilities that are exposed through entries in the Linux Sysfs.
----- Driver Level ------
For the driver level files, look in /sys/bus/pci/drivers/ipw2100/
debug_level
This controls the same global as the 'debug' module parameter. For
information on the various debugging levels available, run the 'dvals'
script found in the driver source directory.
NOTE: 'debug_level' is only enabled if CONFIG_IPW2100_DEBUG is turn
on.
----- Device Level ------
For the device level files look in
/sys/bus/pci/drivers/ipw2100/{PCI-ID}/
For example:
/sys/bus/pci/drivers/ipw2100/0000:02:01.0
For the device level files, see /sys/bus/pci/drivers/ipw2100:
rf_kill
read -
0 = RF kill not enabled (radio on)
1 = SW based RF kill active (radio off)
2 = HW based RF kill active (radio off)
3 = Both HW and SW RF kill active (radio off)
write -
0 = If SW based RF kill active, turn the radio back on
1 = If radio is on, activate SW based RF kill
NOTE: If you enable the SW based RF kill and then toggle the HW
based RF kill from ON -> OFF -> ON, the radio will NOT come back on
===========================
4. Radio Kill Switch
---------------------------
Most laptops provide the ability for the user to physically disable the radio.
Some vendors have implemented this as a physical switch that requires no
software to turn the radio off and on. On other laptops, however, the switch
is controlled through a button being pressed and a software driver then making
calls to turn the radio off and on. This is referred to as a "software based
RF kill switch"
See the Sysfs helper file 'rf_kill' for determining the state of the RF switch
on your system.
===========================
5. Dynamic Firmware
---------------------------
As the firmware is licensed under a restricted use license, it can not be
included within the kernel sources. To enable the IPW2100 you will need a
firmware image to load into the wireless NIC's processors.
You can obtain these images from <http://ipw2100.sf.net/firmware.php>.
See INSTALL for instructions on installing the firmware.
===========================
6. Power Management
---------------------------
The IPW2100 supports the configuration of the Power Save Protocol
through a private wireless extension interface. The IPW2100 supports
the following different modes:
off No power management. Radio is always on.
on Automatic power management
1-5 Different levels of power management. The higher the
number the greater the power savings, but with an impact to
packet latencies.
Power management works by powering down the radio after a certain
interval of time has passed where no packets are passed through the
radio. Once powered down, the radio remains in that state for a given
period of time. For higher power savings, the interval between last
packet processed to sleep is shorter and the sleep period is longer.
When the radio is asleep, the access point sending data to the station
must buffer packets at the AP until the station wakes up and requests
any buffered packets. If you have an AP that does not correctly support
the PSP protocol you may experience packet loss or very poor performance
while power management is enabled. If this is the case, you will need
to try and find a firmware update for your AP, or disable power
management (via `iwconfig eth1 power off`)
To configure the power level on the IPW2100 you use a combination of
iwconfig and iwpriv. iwconfig is used to turn power management on, off,
and set it to auto.
iwconfig eth1 power off Disables radio power down
iwconfig eth1 power on Enables radio power management to
last set level (defaults to AUTO)
iwpriv eth1 set_power 0 Sets power level to AUTO and enables
power management if not previously
enabled.
iwpriv eth1 set_power 1-5 Set the power level as specified,
enabling power management if not
previously enabled.
You can view the current power level setting via:
iwpriv eth1 get_power
It will return the current period or timeout that is configured as a string
in the form of xxxx/yyyy (z) where xxxx is the timeout interval (amount of
time after packet processing), yyyy is the period to sleep (amount of time to
wait before powering the radio and querying the access point for buffered
packets), and z is the 'power level'. If power management is turned off the
xxxx/yyyy will be replaced with 'off' -- the level reported will be the active
level if `iwconfig eth1 power on` is invoked.
===========================
7. Support
---------------------------
For general development information and support,
go to:
http://ipw2100.sf.net/
The ipw2100 1.1.0 driver and firmware can be downloaded from:
http://support.intel.com
For installation support on the ipw2100 1.1.0 driver on Linux kernels
2.6.8 or greater, email support is available from:
http://supportmail.intel.com
===========================
8. License
---------------------------
Copyright(c) 2003 - 2005 Intel Corporation. All rights reserved.
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.
This program 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 General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59
Temple Place - Suite 330, Boston, MA 02111-1307, USA.
The full GNU General Public License is included in this distribution in the
file called LICENSE.
License Contact Information:
James P. Ketrenos <ipw2100-admin@linux.intel.com>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

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Documentation/networking/README.ipw2200 Normal file
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@ -0,0 +1,300 @@
Intel(R) PRO/Wireless 2915ABG Driver for Linux in support of:
Intel(R) PRO/Wireless 2200BG Network Connection
Intel(R) PRO/Wireless 2915ABG Network Connection
Note: The Intel(R) PRO/Wireless 2915ABG Driver for Linux and Intel(R)
PRO/Wireless 2200BG Driver for Linux is a unified driver that works on
both hardware adapters listed above. In this document the Intel(R)
PRO/Wireless 2915ABG Driver for Linux will be used to reference the
unified driver.
Copyright (C) 2004-2005, Intel Corporation
README.ipw2200
Version: 1.0.0
Date : January 31, 2005
Index
-----------------------------------------------
1. Introduction
1.1. Overview of features
1.2. Module parameters
1.3. Wireless Extension Private Methods
1.4. Sysfs Helper Files
2. About the Version Numbers
3. Support
4. License
1. Introduction
-----------------------------------------------
The following sections attempt to provide a brief introduction to using
the Intel(R) PRO/Wireless 2915ABG Driver for Linux.
This document is not meant to be a comprehensive manual on
understanding or using wireless technologies, but should be sufficient
to get you moving without wires on Linux.
For information on building and installing the driver, see the INSTALL
file.
1.1. Overview of Features
-----------------------------------------------
The current release (1.0.0) supports the following features:
+ BSS mode (Infrastructure, Managed)
+ IBSS mode (Ad-Hoc)
+ WEP (OPEN and SHARED KEY mode)
+ 802.1x EAP via wpa_supplicant and xsupplicant
+ Wireless Extension support
+ Full B and G rate support (2200 and 2915)
+ Full A rate support (2915 only)
+ Transmit power control
+ S state support (ACPI suspend/resume)
+ long/short preamble support
1.2. Command Line Parameters
-----------------------------------------------
Like many modules used in the Linux kernel, the Intel(R) PRO/Wireless
2915ABG Driver for Linux allows certain configuration options to be
provided as module parameters. The most common way to specify a module
parameter is via the command line.
The general form is:
% modprobe ipw2200 parameter=value
Where the supported parameter are:
associate
Set to 0 to disable the auto scan-and-associate functionality of the
driver. If disabled, the driver will not attempt to scan
for and associate to a network until it has been configured with
one or more properties for the target network, for example configuring
the network SSID. Default is 1 (auto-associate)
Example: % modprobe ipw2200 associate=0
auto_create
Set to 0 to disable the auto creation of an Ad-Hoc network
matching the channel and network name parameters provided.
Default is 1.
channel
channel number for association. The normal method for setting
the channel would be to use the standard wireless tools
(i.e. `iwconfig eth1 channel 10`), but it is useful sometimes
to set this while debugging. Channel 0 means 'ANY'
debug
If using a debug build, this is used to control the amount of debug
info is logged. See the 'dval' and 'load' script for more info on
how to use this (the dval and load scripts are provided as part
of the ipw2200 development snapshot releases available from the
SourceForge project at http://ipw2200.sf.net)
mode
Can be used to set the default mode of the adapter.
0 = Managed, 1 = Ad-Hoc
1.3. Wireless Extension Private Methods
-----------------------------------------------
As an interface designed to handle generic hardware, there are certain
capabilities not exposed through the normal Wireless Tool interface. As
such, a provision is provided for a driver to declare custom, or
private, methods. The Intel(R) PRO/Wireless 2915ABG Driver for Linux
defines several of these to configure various settings.
The general form of using the private wireless methods is:
% iwpriv $IFNAME method parameters
Where $IFNAME is the interface name the device is registered with
(typically eth1, customized via one of the various network interface
name managers, such as ifrename)
The supported private methods are:
get_mode
Can be used to report out which IEEE mode the driver is
configured to support. Example:
% iwpriv eth1 get_mode
eth1 get_mode:802.11bg (6)
set_mode
Can be used to configure which IEEE mode the driver will
support.
Usage:
% iwpriv eth1 set_mode {mode}
Where {mode} is a number in the range 1-7:
1 802.11a (2915 only)
2 802.11b
3 802.11ab (2915 only)
4 802.11g
5 802.11ag (2915 only)
6 802.11bg
7 802.11abg (2915 only)
get_preamble
Can be used to report configuration of preamble length.
set_preamble
Can be used to set the configuration of preamble length:
Usage:
% iwpriv eth1 set_preamble {mode}
Where {mode} is one of:
1 Long preamble only
0 Auto (long or short based on connection)
1.4. Sysfs Helper Files:
-----------------------------------------------
The Linux kernel provides a pseudo file system that can be used to
access various components of the operating system. The Intel(R)
PRO/Wireless 2915ABG Driver for Linux exposes several configuration
parameters through this mechanism.
An entry in the sysfs can support reading and/or writing. You can
typically query the contents of a sysfs entry through the use of cat,
and can set the contents via echo. For example:
% cat /sys/bus/pci/drivers/ipw2200/debug_level
Will report the current debug level of the driver's logging subsystem
(only available if CONFIG_IPW_DEBUG was configured when the driver was
built).
You can set the debug level via:
% echo $VALUE > /sys/bus/pci/drivers/ipw2200/debug_level
Where $VALUE would be a number in the case of this sysfs entry. The
input to sysfs files does not have to be a number. For example, the
firmware loader used by hotplug utilizes sysfs entries for transferring
the firmware image from user space into the driver.
The Intel(R) PRO/Wireless 2915ABG Driver for Linux exposes sysfs entries
at two levels -- driver level, which apply to all instances of the
driver (in the event that there are more than one device installed) and
device level, which applies only to the single specific instance.
1.4.1 Driver Level Sysfs Helper Files
-----------------------------------------------
For the driver level files, look in /sys/bus/pci/drivers/ipw2200/
debug_level
This controls the same global as the 'debug' module parameter
1.4.2 Device Level Sysfs Helper Files
-----------------------------------------------
For the device level files, look in
/sys/bus/pci/drivers/ipw2200/{PCI-ID}/
For example:
/sys/bus/pci/drivers/ipw2200/0000:02:01.0
For the device level files, see /sys/bus/pci/[drivers/ipw2200:
rf_kill
read -
0 = RF kill not enabled (radio on)
1 = SW based RF kill active (radio off)
2 = HW based RF kill active (radio off)
3 = Both HW and SW RF kill active (radio off)
write -
0 = If SW based RF kill active, turn the radio back on
1 = If radio is on, activate SW based RF kill
NOTE: If you enable the SW based RF kill and then toggle the HW
based RF kill from ON -> OFF -> ON, the radio will NOT come back on
ucode
read-only access to the ucode version number
2. About the Version Numbers
-----------------------------------------------
Due to the nature of open source development projects, there are
frequently changes being incorporated that have not gone through
a complete validation process. These changes are incorporated into
development snapshot releases.
Releases are numbered with a three level scheme:
major.minor.development
Any version where the 'development' portion is 0 (for example
1.0.0, 1.1.0, etc.) indicates a stable version that will be made
available for kernel inclusion.
Any version where the 'development' portion is not a 0 (for
example 1.0.1, 1.1.5, etc.) indicates a development version that is
being made available for testing and cutting edge users. The stability
and functionality of the development releases are not know. We make
efforts to try and keep all snapshots reasonably stable, but due to the
frequency of their release, and the desire to get those releases
available as quickly as possible, unknown anomalies should be expected.
The major version number will be incremented when significant changes
are made to the driver. Currently, there are no major changes planned.
3. Support
-----------------------------------------------
For installation support of the 1.0.0 version, you can contact
http://supportmail.intel.com, or you can use the open source project
support.
For general information and support, go to:
http://ipw2200.sf.net/
4. License
-----------------------------------------------
Copyright(c) 2003 - 2005 Intel Corporation. All rights reserved.
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.
This program 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 General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59
Temple Place - Suite 330, Boston, MA 02111-1307, USA.
The full GNU General Public License is included in this distribution in the
file called LICENSE.
Contact Information:
James P. Ketrenos <ipw2100-admin@linux.intel.com>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

105
drivers/net/wireless/Kconfig
View File

@ -137,6 +137,111 @@ config PCMCIA_RAYCS
comment "Wireless 802.11b ISA/PCI cards support"
depends on NET_RADIO && (ISA || PCI || PPC_PMAC || PCMCIA)
config IPW2100
tristate "Intel PRO/Wireless 2100 Network Connection"
depends on NET_RADIO && PCI && IEEE80211
select FW_LOADER
---help---
A driver for the Intel PRO/Wireless 2100 Network
Connection 802.11b wireless network adapter.
See <file:Documentation/networking/README.ipw2100> for information on
the capabilities currently enabled in this driver and for tips
for debugging issues and problems.
In order to use this driver, you will need a firmware image for it.
You can obtain the firmware from
<http://ipw2100.sf.net/>. Once you have the firmware image, you
will need to place it in /etc/firmware.
You will also very likely need the Wireless Tools in order to
configure your card:
<http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html>.
If you want to compile the driver as a module ( = code which can be
inserted in and remvoed from the running kernel whenever you want),
say M here and read <file:Documentation/modules.txt>. The module
will be called ipw2100.ko.
config IPW2100_PROMISC
bool "Enable promiscuous mode"
depends on IPW2100
---help---
Enables promiscuous/monitor mode support for the ipw2100 driver.
With this feature compiled into the driver, you can switch to
promiscuous mode via the Wireless Tool's Monitor mode. While in this
mode, no packets can be sent.
config IPW_DEBUG
bool "Enable full debugging output in IPW2100 module."
depends on IPW2100
---help---
This option will enable debug tracing output for the IPW2100.
This will result in the kernel module being ~60k larger. You can
control which debug output is sent to the kernel log by setting the
value in
/sys/bus/pci/drivers/ipw2100/debug_level
This entry will only exist if this option is enabled.
If you are not trying to debug or develop the IPW2100 driver, you
most likely want to say N here.
config IPW2200
tristate "Intel PRO/Wireless 2200BG and 2915ABG Network Connection"
depends on NET_RADIO && PCI
select FW_LOADER
select IEEE80211
---help---
A driver for the Intel PRO/Wireless 2200BG and 2915ABG Network
Connection adapters.
See <file:Documentation/networking/README.ipw2200> for
information on the capabilities currently enabled in this
driver and for tips for debugging issues and problems.
In order to use this driver, you will need a firmware image for it.
You can obtain the firmware from
<http://ipw2200.sf.net/>. See the above referenced README.ipw2200
for information on where to install the firmare images.
You will also very likely need the Wireless Tools in order to
configure your card:
<http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html>.
If you want to compile the driver as a module ( = code which can be
inserted in and remvoed from the running kernel whenever you want),
say M here and read <file:Documentation/modules.txt>. The module
will be called ipw2200.ko.
config IPW_DEBUG
bool "Enable full debugging output in IPW2200 module."
depends on IPW2200
---help---
This option will enable debug tracing output for the IPW2200.
This will result in the kernel module being ~100k larger. You can
control which debug output is sent to the kernel log by setting the
value in
/sys/bus/pci/drivers/ipw2200/debug_level
This entry will only exist if this option is enabled.
To set a value, simply echo an 8-byte hex value to the same file:
% echo 0x00000FFO > /sys/bus/pci/drivers/ipw2200/debug_level
You can find the list of debug mask values in
drivers/net/wireless/ipw2200.h
If you are not trying to debug or develop the IPW2200 driver, you
most likely want to say N here.
config AIRO
tristate "Cisco/Aironet 34X/35X/4500/4800 ISA and PCI cards"
depends on NET_RADIO && ISA && (PCI || BROKEN)

4
drivers/net/wireless/Makefile
View File

@ -2,6 +2,10 @@
# Makefile for the Linux Wireless network device drivers.
#
obj-$(CONFIG_IPW2100) += ipw2100.o
obj-$(CONFIG_IPW2200) += ipw2200.o
obj-$(CONFIG_STRIP) += strip.o
obj-$(CONFIG_ARLAN) += arlan.o

62
drivers/net/wireless/atmel.c
View File

@ -68,7 +68,7 @@
#include <linux/device.h>
#include <linux/moduleparam.h>
#include <linux/firmware.h>
#include "ieee802_11.h"
#include <net/ieee80211.h>
#include "atmel.h"
#define DRIVER_MAJOR 0
@ -618,12 +618,12 @@ static int atmel_lock_mac(struct atmel_private *priv);
static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
static void atmel_command_irq(struct atmel_private *priv);
static int atmel_validate_channel(struct atmel_private *priv, int channel);
static void atmel_management_frame(struct atmel_private *priv, struct ieee802_11_hdr *header,
static void atmel_management_frame(struct atmel_private *priv, struct ieee80211_hdr *header,
u16 frame_len, u8 rssi);
static void atmel_management_timer(u_long a);
static void atmel_send_command(struct atmel_private *priv, int command, void *cmd, int cmd_size);
static int atmel_send_command_wait(struct atmel_private *priv, int command, void *cmd, int cmd_size);
static void atmel_transmit_management_frame(struct atmel_private *priv, struct ieee802_11_hdr *header,
static void atmel_transmit_management_frame(struct atmel_private *priv, struct ieee80211_hdr *header,
u8 *body, int body_len);
static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
@ -827,7 +827,7 @@ static void tx_update_descriptor(struct atmel_private *priv, int is_bcast, u16 l
static int start_tx (struct sk_buff *skb, struct net_device *dev)
{
struct atmel_private *priv = netdev_priv(dev);
struct ieee802_11_hdr header;
struct ieee80211_hdr header;
unsigned long flags;
u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
u8 SNAP_RFC1024[6] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
@ -863,17 +863,17 @@ static int start_tx (struct sk_buff *skb, struct net_device *dev)
return 1;
}
frame_ctl = IEEE802_11_FTYPE_DATA;
frame_ctl = IEEE80211_FTYPE_DATA;
header.duration_id = 0;
header.seq_ctl = 0;
if (priv->wep_is_on)
frame_ctl |= IEEE802_11_FCTL_WEP;
frame_ctl |= IEEE80211_FCTL_WEP;
if (priv->operating_mode == IW_MODE_ADHOC) {
memcpy(&header.addr1, skb->data, 6);
memcpy(&header.addr2, dev->dev_addr, 6);
memcpy(&header.addr3, priv->BSSID, 6);
} else {
frame_ctl |= IEEE802_11_FCTL_TODS;
frame_ctl |= IEEE80211_FCTL_TODS;
memcpy(&header.addr1, priv->CurrentBSSID, 6);
memcpy(&header.addr2, dev->dev_addr, 6);
memcpy(&header.addr3, skb->data, 6);
@ -902,7 +902,7 @@ static int start_tx (struct sk_buff *skb, struct net_device *dev)
}
static void atmel_transmit_management_frame(struct atmel_private *priv,
struct ieee802_11_hdr *header,
struct ieee80211_hdr *header,
u8 *body, int body_len)
{
u16 buff;
@ -917,7 +917,7 @@ static void atmel_transmit_management_frame(struct atmel_private *priv,
tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
}
static void fast_rx_path(struct atmel_private *priv, struct ieee802_11_hdr *header,
static void fast_rx_path(struct atmel_private *priv, struct ieee80211_hdr *header,
u16 msdu_size, u16 rx_packet_loc, u32 crc)
{
/* fast path: unfragmented packet copy directly into skbuf */
@ -955,7 +955,7 @@ static void fast_rx_path(struct atmel_private *priv, struct ieee802_11_hdr *head
}
memcpy(skbp, header->addr1, 6); /* destination address */
if (le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_FROMDS)
if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
memcpy(&skbp[6], header->addr3, 6);
else
memcpy(&skbp[6], header->addr2, 6); /* source address */
@ -990,14 +990,14 @@ static int probe_crc(struct atmel_private *priv, u16 packet_loc, u16 msdu_size)
return (crc ^ 0xffffffff) == netcrc;
}
static void frag_rx_path(struct atmel_private *priv, struct ieee802_11_hdr *header,
static void frag_rx_path(struct atmel_private *priv, struct ieee80211_hdr *header,
u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no, u8 frag_no, int more_frags)
{
u8 mac4[6];
u8 source[6];
struct sk_buff *skb;
if (le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_FROMDS)
if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
memcpy(source, header->addr3, 6);
else
memcpy(source, header->addr2, 6);
@ -1082,7 +1082,7 @@ static void frag_rx_path(struct atmel_private *priv, struct ieee802_11_hdr *head
static void rx_done_irq(struct atmel_private *priv)
{
int i;
struct ieee802_11_hdr header;
struct ieee80211_hdr header;
for (i = 0;
atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
@ -1117,7 +1117,7 @@ static void rx_done_irq(struct atmel_private *priv)
/* probe for CRC use here if needed once five packets have arrived with
the same crc status, we assume we know what's happening and stop probing */
if (priv->probe_crc) {
if (!priv->wep_is_on || !(frame_ctl & IEEE802_11_FCTL_WEP)) {
if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_WEP)) {
priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
} else {
priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
@ -1132,16 +1132,16 @@ static void rx_done_irq(struct atmel_private *priv)
}
/* don't CRC header when WEP in use */
if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE802_11_FCTL_WEP))) {
if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_WEP))) {
crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
}
msdu_size -= 24; /* header */
if ((frame_ctl & IEEE802_11_FCTL_FTYPE) == IEEE802_11_FTYPE_DATA) {
if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
int more_fragments = frame_ctl & IEEE802_11_FCTL_MOREFRAGS;
u8 packet_fragment_no = seq_control & IEEE802_11_SCTL_FRAG;
u16 packet_sequence_no = (seq_control & IEEE802_11_SCTL_SEQ) >> 4;
int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
if (!more_fragments && packet_fragment_no == 0 ) {
fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
@ -1151,7 +1151,7 @@ static void rx_done_irq(struct atmel_private *priv)
}
}
if ((frame_ctl & IEEE802_11_FCTL_FTYPE) == IEEE802_11_FTYPE_MGMT) {
if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
/* copy rest of packet into buffer */
atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
@ -2663,10 +2663,10 @@ static void handle_beacon_probe(struct atmel_private *priv, u16 capability, u8 c
static void send_authentication_request(struct atmel_private *priv, u8 *challenge, int challenge_len)
{
struct ieee802_11_hdr header;
struct ieee80211_hdr header;
struct auth_body auth;
header.frame_ctl = cpu_to_le16(IEEE802_11_FTYPE_MGMT | IEEE802_11_STYPE_AUTH);
header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
header.duration_id = cpu_to_le16(0x8000);
header.seq_ctl = 0;
memcpy(header.addr1, priv->CurrentBSSID, 6);
@ -2677,7 +2677,7 @@ static void send_authentication_request(struct atmel_private *priv, u8 *challeng
auth.alg = cpu_to_le16(C80211_MGMT_AAN_SHAREDKEY);
/* no WEP for authentication frames with TrSeqNo 1 */
if (priv->CurrentAuthentTransactionSeqNum != 1)
header.frame_ctl |= cpu_to_le16(IEEE802_11_FCTL_WEP);
header.frame_ctl |= cpu_to_le16(IEEE80211_FCTL_WEP);
} else {
auth.alg = cpu_to_le16(C80211_MGMT_AAN_OPENSYSTEM);
}
@ -2701,7 +2701,7 @@ static void send_association_request(struct atmel_private *priv, int is_reassoc)
{
u8 *ssid_el_p;
int bodysize;
struct ieee802_11_hdr header;
struct ieee80211_hdr header;
struct ass_req_format {
u16 capability;
u16 listen_interval;
@ -2714,8 +2714,8 @@ static void send_association_request(struct atmel_private *priv, int is_reassoc)
u8 rates[4];
} body;
header.frame_ctl = cpu_to_le16(IEEE802_11_FTYPE_MGMT |
(is_reassoc ? IEEE802_11_STYPE_REASSOC_REQ : IEEE802_11_STYPE_ASSOC_REQ));
header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
(is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
header.duration_id = cpu_to_le16(0x8000);
header.seq_ctl = 0;
@ -2751,9 +2751,9 @@ static void send_association_request(struct atmel_private *priv, int is_reassoc)
atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
}
static int is_frame_from_current_bss(struct atmel_private *priv, struct ieee802_11_hdr *header)
static int is_frame_from_current_bss(struct atmel_private *priv, struct ieee80211_hdr *header)
{
if (le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_FROMDS)
if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
else
return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
@ -2801,7 +2801,7 @@ static int retrieve_bss(struct atmel_private *priv)
}
static void store_bss_info(struct atmel_private *priv, struct ieee802_11_hdr *header,
static void store_bss_info(struct atmel_private *priv, struct ieee80211_hdr *header,
u16 capability, u16 beacon_period, u8 channel, u8 rssi,
u8 ssid_len, u8 *ssid, int is_beacon)
{
@ -3085,12 +3085,12 @@ static void atmel_smooth_qual(struct atmel_private *priv)
}
/* deals with incoming managment frames. */
static void atmel_management_frame(struct atmel_private *priv, struct ieee802_11_hdr *header,
static void atmel_management_frame(struct atmel_private *priv, struct ieee80211_hdr *header,
u16 frame_len, u8 rssi)
{
u16 subtype;
switch (subtype = le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_STYPE) {
switch (subtype = le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_STYPE) {
case C80211_SUBTYPE_MGMT_BEACON :
case C80211_SUBTYPE_MGMT_ProbeResponse:

78
drivers/net/wireless/ieee802_11.h
View File

@ -1,78 +0,0 @@
#ifndef _IEEE802_11_H
#define _IEEE802_11_H
#define IEEE802_11_DATA_LEN 2304
/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
6.2.1.1.2.
The figure in section 7.1.2 suggests a body size of up to 2312
bytes is allowed, which is a bit confusing, I suspect this
represents the 2304 bytes of real data, plus a possible 8 bytes of
WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
#define IEEE802_11_HLEN 30
#define IEEE802_11_FRAME_LEN (IEEE802_11_DATA_LEN + IEEE802_11_HLEN)
struct ieee802_11_hdr {
u16 frame_ctl;
u16 duration_id;
u8 addr1[ETH_ALEN];
u8 addr2[ETH_ALEN];
u8 addr3[ETH_ALEN];
u16 seq_ctl;
u8 addr4[ETH_ALEN];
} __attribute__ ((packed));
/* Frame control field constants */
#define IEEE802_11_FCTL_VERS 0x0002
#define IEEE802_11_FCTL_FTYPE 0x000c
#define IEEE802_11_FCTL_STYPE 0x00f0
#define IEEE802_11_FCTL_TODS 0x0100
#define IEEE802_11_FCTL_FROMDS 0x0200
#define IEEE802_11_FCTL_MOREFRAGS 0x0400
#define IEEE802_11_FCTL_RETRY 0x0800
#define IEEE802_11_FCTL_PM 0x1000
#define IEEE802_11_FCTL_MOREDATA 0x2000
#define IEEE802_11_FCTL_WEP 0x4000
#define IEEE802_11_FCTL_ORDER 0x8000
#define IEEE802_11_FTYPE_MGMT 0x0000
#define IEEE802_11_FTYPE_CTL 0x0004
#define IEEE802_11_FTYPE_DATA 0x0008
/* management */
#define IEEE802_11_STYPE_ASSOC_REQ 0x0000
#define IEEE802_11_STYPE_ASSOC_RESP 0x0010
#define IEEE802_11_STYPE_REASSOC_REQ 0x0020
#define IEEE802_11_STYPE_REASSOC_RESP 0x0030
#define IEEE802_11_STYPE_PROBE_REQ 0x0040
#define IEEE802_11_STYPE_PROBE_RESP 0x0050
#define IEEE802_11_STYPE_BEACON 0x0080
#define IEEE802_11_STYPE_ATIM 0x0090
#define IEEE802_11_STYPE_DISASSOC 0x00A0
#define IEEE802_11_STYPE_AUTH 0x00B0
#define IEEE802_11_STYPE_DEAUTH 0x00C0
/* control */
#define IEEE802_11_STYPE_PSPOLL 0x00A0
#define IEEE802_11_STYPE_RTS 0x00B0
#define IEEE802_11_STYPE_CTS 0x00C0
#define IEEE802_11_STYPE_ACK 0x00D0
#define IEEE802_11_STYPE_CFEND 0x00E0
#define IEEE802_11_STYPE_CFENDACK 0x00F0
/* data */
#define IEEE802_11_STYPE_DATA 0x0000
#define IEEE802_11_STYPE_DATA_CFACK 0x0010
#define IEEE802_11_STYPE_DATA_CFPOLL 0x0020
#define IEEE802_11_STYPE_DATA_CFACKPOLL 0x0030
#define IEEE802_11_STYPE_NULLFUNC 0x0040
#define IEEE802_11_STYPE_CFACK 0x0050
#define IEEE802_11_STYPE_CFPOLL 0x0060
#define IEEE802_11_STYPE_CFACKPOLL 0x0070
#define IEEE802_11_SCTL_FRAG 0x000F
#define IEEE802_11_SCTL_SEQ 0xFFF0
#endif /* _IEEE802_11_H */

8649
drivers/net/wireless/ipw2100.c Normal file
View File

File diff suppressed because it is too large Load Diff

1278
drivers/net/wireless/ipw2100.h Normal file
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File diff suppressed because it is too large Load Diff

7348
drivers/net/wireless/ipw2200.c Normal file
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File diff suppressed because it is too large Load Diff

1770
drivers/net/wireless/ipw2200.h Normal file
View File

File diff suppressed because it is too large Load Diff

11
drivers/net/wireless/orinoco.c
View File

@ -464,6 +464,8 @@
#include <linux/etherdevice.h>
#include <linux/wireless.h>
#include <net/ieee80211.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/system.h>
@ -471,7 +473,6 @@
#include "hermes.h"
#include "hermes_rid.h"
#include "orinoco.h"
#include "ieee802_11.h"
/********************************************************************/
/* Module information */
@ -509,7 +510,7 @@ MODULE_PARM_DESC(suppress_linkstatus, "Don't log link status changes");
/********************************************************************/
#define ORINOCO_MIN_MTU 256
#define ORINOCO_MAX_MTU (IEEE802_11_DATA_LEN - ENCAPS_OVERHEAD)
#define ORINOCO_MAX_MTU (IEEE80211_DATA_LEN - ENCAPS_OVERHEAD)
#define SYMBOL_MAX_VER_LEN (14)
#define USER_BAP 0
@ -760,7 +761,7 @@ static int orinoco_change_mtu(struct net_device *dev, int new_mtu)
if ( (new_mtu < ORINOCO_MIN_MTU) || (new_mtu > ORINOCO_MAX_MTU) )
return -EINVAL;
if ( (new_mtu + ENCAPS_OVERHEAD + IEEE802_11_HLEN) >
if ( (new_mtu + ENCAPS_OVERHEAD + IEEE80211_HLEN) >
(priv->nicbuf_size - ETH_HLEN) )
return -EINVAL;
@ -1104,7 +1105,7 @@ static void __orinoco_ev_rx(struct net_device *dev, hermes_t *hw)
stats->rx_dropped++;
goto drop;
}
if (length > IEEE802_11_DATA_LEN) {
if (length > IEEE80211_DATA_LEN) {
printk(KERN_WARNING "%s: Oversized frame received (%d bytes)\n",
dev->name, length);
stats->rx_length_errors++;
@ -2264,7 +2265,7 @@ static int orinoco_init(struct net_device *dev)
/* No need to lock, the hw_unavailable flag is already set in
* alloc_orinocodev() */
priv->nicbuf_size = IEEE802_11_FRAME_LEN + ETH_HLEN;
priv->nicbuf_size = IEEE80211_FRAME_LEN + ETH_HLEN;
/* Initialize the firmware */
err = hermes_init(hw);

4
drivers/net/wireless/wl3501.h
View File

@ -2,7 +2,7 @@
#define __WL3501_H__
#include <linux/spinlock.h>
#include "ieee802_11.h"
#include <net/ieee80211.h>
/* define for WLA 2.0 */
#define WL3501_BLKSZ 256
@ -548,7 +548,7 @@ struct wl3501_80211_tx_plcp_hdr {
struct wl3501_80211_tx_hdr {
struct wl3501_80211_tx_plcp_hdr pclp_hdr;
struct ieee802_11_hdr mac_hdr;
struct ieee80211_hdr mac_hdr;
} __attribute__ ((packed));
/*

283
include/linux/wireless.h
View File

@ -1,10 +1,10 @@
/*
* This file define a set of standard wireless extensions
*
* Version : 17 21.6.04
* Version : 18 12.3.05
*
* Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com>
* Copyright (c) 1997-2004 Jean Tourrilhes, All Rights Reserved.
* Copyright (c) 1997-2005 Jean Tourrilhes, All Rights Reserved.
*/
#ifndef _LINUX_WIRELESS_H
@ -82,7 +82,7 @@
* (there is some stuff that will be added in the future...)
* I just plan to increment with each new version.
*/
#define WIRELESS_EXT 17
#define WIRELESS_EXT 18
/*
* Changes :
@ -182,6 +182,21 @@
* - Document (struct iw_quality *)->updated, add new flags (INVALID)
* - Wireless Event capability in struct iw_range
* - Add support for relative TxPower (yick !)
*
* V17 to V18 (From Jouni Malinen <jkmaline@cc.hut.fi>)
* ----------
* - Add support for WPA/WPA2
* - Add extended encoding configuration (SIOCSIWENCODEEXT and
* SIOCGIWENCODEEXT)
* - Add SIOCSIWGENIE/SIOCGIWGENIE
* - Add SIOCSIWMLME
* - Add SIOCSIWPMKSA
* - Add struct iw_range bit field for supported encoding capabilities
* - Add optional scan request parameters for SIOCSIWSCAN
* - Add SIOCSIWAUTH/SIOCGIWAUTH for setting authentication and WPA
* related parameters (extensible up to 4096 parameter values)
* - Add wireless events: IWEVGENIE, IWEVMICHAELMICFAILURE,
* IWEVASSOCREQIE, IWEVASSOCRESPIE, IWEVPMKIDCAND
*/
/**************************** CONSTANTS ****************************/
@ -256,6 +271,30 @@
#define SIOCSIWPOWER 0x8B2C /* set Power Management settings */
#define SIOCGIWPOWER 0x8B2D /* get Power Management settings */
/* WPA : Generic IEEE 802.11 informatiom element (e.g., for WPA/RSN/WMM).
* This ioctl uses struct iw_point and data buffer that includes IE id and len
* fields. More than one IE may be included in the request. Setting the generic
* IE to empty buffer (len=0) removes the generic IE from the driver. Drivers
* are allowed to generate their own WPA/RSN IEs, but in these cases, drivers
* are required to report the used IE as a wireless event, e.g., when
* associating with an AP. */
#define SIOCSIWGENIE 0x8B30 /* set generic IE */
#define SIOCGIWGENIE 0x8B31 /* get generic IE */
/* WPA : IEEE 802.11 MLME requests */
#define SIOCSIWMLME 0x8B16 /* request MLME operation; uses
* struct iw_mlme */
/* WPA : Authentication mode parameters */
#define SIOCSIWAUTH 0x8B32 /* set authentication mode params */
#define SIOCGIWAUTH 0x8B33 /* get authentication mode params */
/* WPA : Extended version of encoding configuration */
#define SIOCSIWENCODEEXT 0x8B34 /* set encoding token & mode */
#define SIOCGIWENCODEEXT 0x8B35 /* get encoding token & mode */
/* WPA2 : PMKSA cache management */
#define SIOCSIWPMKSA 0x8B36 /* PMKSA cache operation */
/* -------------------- DEV PRIVATE IOCTL LIST -------------------- */
/* These 32 ioctl are wireless device private, for 16 commands.
@ -297,6 +336,34 @@
#define IWEVCUSTOM 0x8C02 /* Driver specific ascii string */
#define IWEVREGISTERED 0x8C03 /* Discovered a new node (AP mode) */
#define IWEVEXPIRED 0x8C04 /* Expired a node (AP mode) */
#define IWEVGENIE 0x8C05 /* Generic IE (WPA, RSN, WMM, ..)
* (scan results); This includes id and
* length fields. One IWEVGENIE may
* contain more than one IE. Scan
* results may contain one or more
* IWEVGENIE events. */
#define IWEVMICHAELMICFAILURE 0x8C06 /* Michael MIC failure
* (struct iw_michaelmicfailure)
*/
#define IWEVASSOCREQIE 0x8C07 /* IEs used in (Re)Association Request.
* The data includes id and length
* fields and may contain more than one
* IE. This event is required in
* Managed mode if the driver
* generates its own WPA/RSN IE. This
* should be sent just before
* IWEVREGISTERED event for the
* association. */
#define IWEVASSOCRESPIE 0x8C08 /* IEs used in (Re)Association
* Response. The data includes id and
* length fields and may contain more
* than one IE. This may be sent
* between IWEVASSOCREQIE and
* IWEVREGISTERED events for the
* association. */
#define IWEVPMKIDCAND 0x8C09 /* PMKID candidate for RSN
* pre-authentication
* (struct iw_pmkid_cand) */
#define IWEVFIRST 0x8C00
@ -432,12 +499,94 @@
#define IW_SCAN_THIS_MODE 0x0020 /* Scan only this Mode */
#define IW_SCAN_ALL_RATE 0x0040 /* Scan all Bit-Rates */
#define IW_SCAN_THIS_RATE 0x0080 /* Scan only this Bit-Rate */
/* struct iw_scan_req scan_type */
#define IW_SCAN_TYPE_ACTIVE 0
#define IW_SCAN_TYPE_PASSIVE 1
/* Maximum size of returned data */
#define IW_SCAN_MAX_DATA 4096 /* In bytes */
/* Max number of char in custom event - use multiple of them if needed */
#define IW_CUSTOM_MAX 256 /* In bytes */
/* Generic information element */
#define IW_GENERIC_IE_MAX 1024
/* MLME requests (SIOCSIWMLME / struct iw_mlme) */
#define IW_MLME_DEAUTH 0
#define IW_MLME_DISASSOC 1
/* SIOCSIWAUTH/SIOCGIWAUTH struct iw_param flags */
#define IW_AUTH_INDEX 0x0FFF
#define IW_AUTH_FLAGS 0xF000
/* SIOCSIWAUTH/SIOCGIWAUTH parameters (0 .. 4095)
* (IW_AUTH_INDEX mask in struct iw_param flags; this is the index of the
* parameter that is being set/get to; value will be read/written to
* struct iw_param value field) */
#define IW_AUTH_WPA_VERSION 0
#define IW_AUTH_CIPHER_PAIRWISE 1
#define IW_AUTH_CIPHER_GROUP 2
#define IW_AUTH_KEY_MGMT 3
#define IW_AUTH_TKIP_COUNTERMEASURES 4
#define IW_AUTH_DROP_UNENCRYPTED 5
#define IW_AUTH_80211_AUTH_ALG 6
#define IW_AUTH_WPA_ENABLED 7
#define IW_AUTH_RX_UNENCRYPTED_EAPOL 8
#define IW_AUTH_ROAMING_CONTROL 9
#define IW_AUTH_PRIVACY_INVOKED 10
/* IW_AUTH_WPA_VERSION values (bit field) */
#define IW_AUTH_WPA_VERSION_DISABLED 0x00000001
#define IW_AUTH_WPA_VERSION_WPA 0x00000002
#define IW_AUTH_WPA_VERSION_WPA2 0x00000004
/* IW_AUTH_PAIRWISE_CIPHER and IW_AUTH_GROUP_CIPHER values (bit field) */
#define IW_AUTH_CIPHER_NONE 0x00000001
#define IW_AUTH_CIPHER_WEP40 0x00000002
#define IW_AUTH_CIPHER_TKIP 0x00000004
#define IW_AUTH_CIPHER_CCMP 0x00000008
#define IW_AUTH_CIPHER_WEP104 0x00000010
/* IW_AUTH_KEY_MGMT values (bit field) */
#define IW_AUTH_KEY_MGMT_802_1X 1
#define IW_AUTH_KEY_MGMT_PSK 2
/* IW_AUTH_80211_AUTH_ALG values (bit field) */
#define IW_AUTH_ALG_OPEN_SYSTEM 0x00000001
#define IW_AUTH_ALG_SHARED_KEY 0x00000002
#define IW_AUTH_ALG_LEAP 0x00000004
/* IW_AUTH_ROAMING_CONTROL values */
#define IW_AUTH_ROAMING_ENABLE 0 /* driver/firmware based roaming */
#define IW_AUTH_ROAMING_DISABLE 1 /* user space program used for roaming
* control */
/* SIOCSIWENCODEEXT definitions */
#define IW_ENCODE_SEQ_MAX_SIZE 8
/* struct iw_encode_ext ->alg */
#define IW_ENCODE_ALG_NONE 0
#define IW_ENCODE_ALG_WEP 1
#define IW_ENCODE_ALG_TKIP 2
#define IW_ENCODE_ALG_CCMP 3
/* struct iw_encode_ext ->ext_flags */
#define IW_ENCODE_EXT_TX_SEQ_VALID 0x00000001
#define IW_ENCODE_EXT_RX_SEQ_VALID 0x00000002
#define IW_ENCODE_EXT_GROUP_KEY 0x00000004
#define IW_ENCODE_EXT_SET_TX_KEY 0x00000008
/* IWEVMICHAELMICFAILURE : struct iw_michaelmicfailure ->flags */
#define IW_MICFAILURE_KEY_ID 0x00000003 /* Key ID 0..3 */
#define IW_MICFAILURE_GROUP 0x00000004
#define IW_MICFAILURE_PAIRWISE 0x00000008
#define IW_MICFAILURE_STAKEY 0x00000010
#define IW_MICFAILURE_COUNT 0x00000060 /* 1 or 2 (0 = count not supported)
*/
/* Bit field values for enc_capa in struct iw_range */
#define IW_ENC_CAPA_WPA 0x00000001
#define IW_ENC_CAPA_WPA2 0x00000002
#define IW_ENC_CAPA_CIPHER_TKIP 0x00000004
#define IW_ENC_CAPA_CIPHER_CCMP 0x00000008
/* Event capability macros - in (struct iw_range *)->event_capa
* Because we have more than 32 possible events, we use an array of
* 32 bit bitmasks. Note : 32 bits = 0x20 = 2^5. */
@ -546,6 +695,132 @@ struct iw_thrspy
struct iw_quality high; /* High threshold */
};
/*
* Optional data for scan request
*
* Note: these optional parameters are controlling parameters for the
* scanning behavior, these do not apply to getting scan results
* (SIOCGIWSCAN). Drivers are expected to keep a local BSS table and
* provide a merged results with all BSSes even if the previous scan
* request limited scanning to a subset, e.g., by specifying an SSID.
* Especially, scan results are required to include an entry for the
* current BSS if the driver is in Managed mode and associated with an AP.
*/
struct iw_scan_req
{
__u8 scan_type; /* IW_SCAN_TYPE_{ACTIVE,PASSIVE} */
__u8 essid_len;
__u8 num_channels; /* num entries in channel_list;
* 0 = scan all allowed channels */
__u8 flags; /* reserved as padding; use zero, this may
* be used in the future for adding flags
* to request different scan behavior */
struct sockaddr bssid; /* ff:ff:ff:ff:ff:ff for broadcast BSSID or
* individual address of a specific BSS */
/*
* Use this ESSID if IW_SCAN_THIS_ESSID flag is used instead of using
* the current ESSID. This allows scan requests for specific ESSID
* without having to change the current ESSID and potentially breaking
* the current association.
*/
__u8 essid[IW_ESSID_MAX_SIZE];
/*
* Optional parameters for changing the default scanning behavior.
* These are based on the MLME-SCAN.request from IEEE Std 802.11.
* TU is 1.024 ms. If these are set to 0, driver is expected to use
* reasonable default values. min_channel_time defines the time that
* will be used to wait for the first reply on each channel. If no
* replies are received, next channel will be scanned after this. If
* replies are received, total time waited on the channel is defined by
* max_channel_time.
*/
__u32 min_channel_time; /* in TU */
__u32 max_channel_time; /* in TU */
struct iw_freq channel_list[IW_MAX_FREQUENCIES];
};
/* ------------------------- WPA SUPPORT ------------------------- */
/*
* Extended data structure for get/set encoding (this is used with
* SIOCSIWENCODEEXT/SIOCGIWENCODEEXT. struct iw_point and IW_ENCODE_*
* flags are used in the same way as with SIOCSIWENCODE/SIOCGIWENCODE and
* only the data contents changes (key data -> this structure, including
* key data).
*
* If the new key is the first group key, it will be set as the default
* TX key. Otherwise, default TX key index is only changed if
* IW_ENCODE_EXT_SET_TX_KEY flag is set.
*
* Key will be changed with SIOCSIWENCODEEXT in all cases except for
* special "change TX key index" operation which is indicated by setting
* key_len = 0 and ext_flags |= IW_ENCODE_EXT_SET_TX_KEY.
*
* tx_seq/rx_seq are only used when respective
* IW_ENCODE_EXT_{TX,RX}_SEQ_VALID flag is set in ext_flags. Normal
* TKIP/CCMP operation is to set RX seq with SIOCSIWENCODEEXT and start
* TX seq from zero whenever key is changed. SIOCGIWENCODEEXT is normally
* used only by an Authenticator (AP or an IBSS station) to get the
* current TX sequence number. Using TX_SEQ_VALID for SIOCSIWENCODEEXT and
* RX_SEQ_VALID for SIOCGIWENCODEEXT are optional, but can be useful for
* debugging/testing.
*/
struct iw_encode_ext
{
__u32 ext_flags; /* IW_ENCODE_EXT_* */
__u8 tx_seq[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
__u8 rx_seq[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
struct sockaddr addr; /* ff:ff:ff:ff:ff:ff for broadcast/multicast
* (group) keys or unicast address for
* individual keys */
__u16 alg; /* IW_ENCODE_ALG_* */
__u16 key_len;
__u8 key[0];
};
/* SIOCSIWMLME data */
struct iw_mlme
{
__u16 cmd; /* IW_MLME_* */
__u16 reason_code;
struct sockaddr addr;
};
/* SIOCSIWPMKSA data */
#define IW_PMKSA_ADD 1
#define IW_PMKSA_REMOVE 2
#define IW_PMKSA_FLUSH 3
#define IW_PMKID_LEN 16
struct iw_pmksa
{
__u32 cmd; /* IW_PMKSA_* */
struct sockaddr bssid;
__u8 pmkid[IW_PMKID_LEN];
};
/* IWEVMICHAELMICFAILURE data */
struct iw_michaelmicfailure
{
__u32 flags;
struct sockaddr src_addr;
__u8 tsc[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
};
/* IWEVPMKIDCAND data */
#define IW_PMKID_CAND_PREAUTH 0x00000001 /* RNS pre-authentication enabled */
struct iw_pmkid_cand
{
__u32 flags; /* IW_PMKID_CAND_* */
__u32 index; /* the smaller the index, the higher the
* priority */
struct sockaddr bssid;
};
/* ------------------------ WIRELESS STATS ------------------------ */
/*
* Wireless statistics (used for /proc/net/wireless)
@ -725,6 +1000,8 @@ struct iw_range
struct iw_freq freq[IW_MAX_FREQUENCIES]; /* list */
/* Note : this frequency list doesn't need to fit channel numbers,
* because each entry contain its channel index */
__u32 enc_capa; /* IW_ENC_CAPA_* bit field */
};
/*

887
include/net/ieee80211.h Normal file
View File

@ -0,0 +1,887 @@
/*
* Merged with mainline ieee80211.h in Aug 2004. Original ieee802_11
* remains copyright by the original authors
*
* Portions of the merged code are based on Host AP (software wireless
* LAN access point) driver for Intersil Prism2/2.5/3.
*
* Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
* <jkmaline@cc.hut.fi>
* Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
*
* Adaption to a generic IEEE 802.11 stack by James Ketrenos
* <jketreno@linux.intel.com>
* Copyright (c) 2004, Intel Corporation
*
* 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. See README and COPYING for
* more details.
*/
#ifndef IEEE80211_H
#define IEEE80211_H
#include <linux/if_ether.h> /* ETH_ALEN */
#include <linux/kernel.h> /* ARRAY_SIZE */
#if WIRELESS_EXT < 17
#define IW_QUAL_QUAL_INVALID 0x10
#define IW_QUAL_LEVEL_INVALID 0x20
#define IW_QUAL_NOISE_INVALID 0x40
#define IW_QUAL_QUAL_UPDATED 0x1
#define IW_QUAL_LEVEL_UPDATED 0x2
#define IW_QUAL_NOISE_UPDATED 0x4
#endif
#define IEEE80211_DATA_LEN 2304
/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
6.2.1.1.2.
The figure in section 7.1.2 suggests a body size of up to 2312
bytes is allowed, which is a bit confusing, I suspect this
represents the 2304 bytes of real data, plus a possible 8 bytes of
WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
#define IEEE80211_HLEN 30
#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
struct ieee80211_hdr {
u16 frame_ctl;
u16 duration_id;
u8 addr1[ETH_ALEN];
u8 addr2[ETH_ALEN];
u8 addr3[ETH_ALEN];
u16 seq_ctl;
u8 addr4[ETH_ALEN];
} __attribute__ ((packed));
struct ieee80211_hdr_3addr {
u16 frame_ctl;
u16 duration_id;
u8 addr1[ETH_ALEN];
u8 addr2[ETH_ALEN];
u8 addr3[ETH_ALEN];
u16 seq_ctl;
} __attribute__ ((packed));
enum eap_type {
EAP_PACKET = 0,
EAPOL_START,
EAPOL_LOGOFF,
EAPOL_KEY,
EAPOL_ENCAP_ASF_ALERT
};
static const char *eap_types[] = {
[EAP_PACKET] = "EAP-Packet",
[EAPOL_START] = "EAPOL-Start",
[EAPOL_LOGOFF] = "EAPOL-Logoff",
[EAPOL_KEY] = "EAPOL-Key",
[EAPOL_ENCAP_ASF_ALERT] = "EAPOL-Encap-ASF-Alert"
};
static inline const char *eap_get_type(int type)
{
return (type >= ARRAY_SIZE(eap_types)) ? "Unknown" : eap_types[type];
}
struct eapol {
u8 snap[6];
u16 ethertype;
u8 version;
u8 type;
u16 length;
} __attribute__ ((packed));
#define IEEE80211_3ADDR_LEN 24
#define IEEE80211_4ADDR_LEN 30
#define IEEE80211_FCS_LEN 4
#define MIN_FRAG_THRESHOLD 256U
#define MAX_FRAG_THRESHOLD 2346U
/* Frame control field constants */
#define IEEE80211_FCTL_VERS 0x0002
#define IEEE80211_FCTL_FTYPE 0x000c
#define IEEE80211_FCTL_STYPE 0x00f0
#define IEEE80211_FCTL_TODS 0x0100
#define IEEE80211_FCTL_FROMDS 0x0200
#define IEEE80211_FCTL_MOREFRAGS 0x0400
#define IEEE80211_FCTL_RETRY 0x0800
#define IEEE80211_FCTL_PM 0x1000
#define IEEE80211_FCTL_MOREDATA 0x2000
#define IEEE80211_FCTL_WEP 0x4000
#define IEEE80211_FCTL_ORDER 0x8000
#define IEEE80211_FTYPE_MGMT 0x0000
#define IEEE80211_FTYPE_CTL 0x0004
#define IEEE80211_FTYPE_DATA 0x0008
/* management */
#define IEEE80211_STYPE_ASSOC_REQ 0x0000
#define IEEE80211_STYPE_ASSOC_RESP 0x0010
#define IEEE80211_STYPE_REASSOC_REQ 0x0020
#define IEEE80211_STYPE_REASSOC_RESP 0x0030
#define IEEE80211_STYPE_PROBE_REQ 0x0040
#define IEEE80211_STYPE_PROBE_RESP 0x0050
#define IEEE80211_STYPE_BEACON 0x0080
#define IEEE80211_STYPE_ATIM 0x0090
#define IEEE80211_STYPE_DISASSOC 0x00A0
#define IEEE80211_STYPE_AUTH 0x00B0
#define IEEE80211_STYPE_DEAUTH 0x00C0
/* control */
#define IEEE80211_STYPE_PSPOLL 0x00A0
#define IEEE80211_STYPE_RTS 0x00B0
#define IEEE80211_STYPE_CTS 0x00C0
#define IEEE80211_STYPE_ACK 0x00D0
#define IEEE80211_STYPE_CFEND 0x00E0
#define IEEE80211_STYPE_CFENDACK 0x00F0
/* data */
#define IEEE80211_STYPE_DATA 0x0000
#define IEEE80211_STYPE_DATA_CFACK 0x0010
#define IEEE80211_STYPE_DATA_CFPOLL 0x0020
#define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
#define IEEE80211_STYPE_NULLFUNC 0x0040
#define IEEE80211_STYPE_CFACK 0x0050
#define IEEE80211_STYPE_CFPOLL 0x0060
#define IEEE80211_STYPE_CFACKPOLL 0x0070
#define IEEE80211_SCTL_FRAG 0x000F
#define IEEE80211_SCTL_SEQ 0xFFF0
/* debug macros */
#ifdef CONFIG_IEEE80211_DEBUG
extern u32 ieee80211_debug_level;
#define IEEE80211_DEBUG(level, fmt, args...) \
do { if (ieee80211_debug_level & (level)) \
printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
#else
#define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
#endif /* CONFIG_IEEE80211_DEBUG */
/*
* To use the debug system;
*
* If you are defining a new debug classification, simply add it to the #define
* list here in the form of:
*
* #define IEEE80211_DL_xxxx VALUE
*
* shifting value to the left one bit from the previous entry. xxxx should be
* the name of the classification (for example, WEP)
*
* You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
* classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
* to send output to that classification.
*
* To add your debug level to the list of levels seen when you perform
*
* % cat /proc/net/ipw/debug_level
*
* you simply need to add your entry to the ipw_debug_levels array.
*
* If you do not see debug_level in /proc/net/ipw then you do not have
* CONFIG_IEEE80211_DEBUG defined in your kernel configuration
*
*/
#define IEEE80211_DL_INFO (1<<0)
#define IEEE80211_DL_WX (1<<1)
#define IEEE80211_DL_SCAN (1<<2)
#define IEEE80211_DL_STATE (1<<3)
#define IEEE80211_DL_MGMT (1<<4)
#define IEEE80211_DL_FRAG (1<<5)
#define IEEE80211_DL_EAP (1<<6)
#define IEEE80211_DL_DROP (1<<7)
#define IEEE80211_DL_TX (1<<8)
#define IEEE80211_DL_RX (1<<9)
#define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
#define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
#define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
#define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
#define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
#define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
#define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
#define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
#define IEEE80211_DEBUG_EAP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_EAP, f, ## a)
#define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
#define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
#define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
#include <linux/netdevice.h>
#include <linux/wireless.h>
#include <linux/if_arp.h> /* ARPHRD_ETHER */
#ifndef WIRELESS_SPY
#define WIRELESS_SPY // enable iwspy support
#endif
#include <net/iw_handler.h> // new driver API
#ifndef ETH_P_PAE
#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
#endif /* ETH_P_PAE */
#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
#ifndef ETH_P_80211_RAW
#define ETH_P_80211_RAW (ETH_P_ECONET + 1)
#endif
/* IEEE 802.11 defines */
#define P80211_OUI_LEN 3
struct ieee80211_snap_hdr {
u8 dsap; /* always 0xAA */
u8 ssap; /* always 0xAA */
u8 ctrl; /* always 0x03 */
u8 oui[P80211_OUI_LEN]; /* organizational universal id */
} __attribute__ ((packed));
#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
#define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
#define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
#define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
#define WLAN_GET_SEQ_SEQ(seq) ((seq) & IEEE80211_SCTL_SEQ)
/* Authentication algorithms */
#define WLAN_AUTH_OPEN 0
#define WLAN_AUTH_SHARED_KEY 1
#define WLAN_AUTH_CHALLENGE_LEN 128
#define WLAN_CAPABILITY_BSS (1<<0)
#define WLAN_CAPABILITY_IBSS (1<<1)
#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
#define WLAN_CAPABILITY_PRIVACY (1<<4)
#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
#define WLAN_CAPABILITY_PBCC (1<<6)
#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
/* Status codes */
#define WLAN_STATUS_SUCCESS 0
#define WLAN_STATUS_UNSPECIFIED_FAILURE 1
#define WLAN_STATUS_CAPS_UNSUPPORTED 10
#define WLAN_STATUS_REASSOC_NO_ASSOC 11
#define WLAN_STATUS_ASSOC_DENIED_UNSPEC 12
#define WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG 13
#define WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION 14
#define WLAN_STATUS_CHALLENGE_FAIL 15
#define WLAN_STATUS_AUTH_TIMEOUT 16
#define WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA 17
#define WLAN_STATUS_ASSOC_DENIED_RATES 18
/* 802.11b */
#define WLAN_STATUS_ASSOC_DENIED_NOSHORT 19
#define WLAN_STATUS_ASSOC_DENIED_NOPBCC 20
#define WLAN_STATUS_ASSOC_DENIED_NOAGILITY 21
/* Reason codes */
#define WLAN_REASON_UNSPECIFIED 1
#define WLAN_REASON_PREV_AUTH_NOT_VALID 2
#define WLAN_REASON_DEAUTH_LEAVING 3
#define WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY 4
#define WLAN_REASON_DISASSOC_AP_BUSY 5
#define WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA 6
#define WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA 7
#define WLAN_REASON_DISASSOC_STA_HAS_LEFT 8
#define WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH 9
/* Information Element IDs */
#define WLAN_EID_SSID 0
#define WLAN_EID_SUPP_RATES 1
#define WLAN_EID_FH_PARAMS 2
#define WLAN_EID_DS_PARAMS 3
#define WLAN_EID_CF_PARAMS 4
#define WLAN_EID_TIM 5
#define WLAN_EID_IBSS_PARAMS 6
#define WLAN_EID_CHALLENGE 16
#define WLAN_EID_RSN 48
#define WLAN_EID_GENERIC 221
#define IEEE80211_MGMT_HDR_LEN 24
#define IEEE80211_DATA_HDR3_LEN 24
#define IEEE80211_DATA_HDR4_LEN 30
#define IEEE80211_STATMASK_SIGNAL (1<<0)
#define IEEE80211_STATMASK_RSSI (1<<1)
#define IEEE80211_STATMASK_NOISE (1<<2)
#define IEEE80211_STATMASK_RATE (1<<3)
#define IEEE80211_STATMASK_WEMASK 0x7
#define IEEE80211_CCK_MODULATION (1<<0)
#define IEEE80211_OFDM_MODULATION (1<<1)
#define IEEE80211_24GHZ_BAND (1<<0)
#define IEEE80211_52GHZ_BAND (1<<1)
#define IEEE80211_CCK_RATE_1MB 0x02
#define IEEE80211_CCK_RATE_2MB 0x04
#define IEEE80211_CCK_RATE_5MB 0x0B
#define IEEE80211_CCK_RATE_11MB 0x16
#define IEEE80211_OFDM_RATE_6MB 0x0C
#define IEEE80211_OFDM_RATE_9MB 0x12
#define IEEE80211_OFDM_RATE_12MB 0x18
#define IEEE80211_OFDM_RATE_18MB 0x24
#define IEEE80211_OFDM_RATE_24MB 0x30
#define IEEE80211_OFDM_RATE_36MB 0x48
#define IEEE80211_OFDM_RATE_48MB 0x60
#define IEEE80211_OFDM_RATE_54MB 0x6C
#define IEEE80211_BASIC_RATE_MASK 0x80
#define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
#define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
#define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
#define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
#define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
#define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
#define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
#define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
#define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
#define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
#define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
#define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
#define IEEE80211_CCK_RATES_MASK 0x0000000F
#define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
IEEE80211_CCK_RATE_2MB_MASK)
#define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
IEEE80211_CCK_RATE_5MB_MASK | \
IEEE80211_CCK_RATE_11MB_MASK)
#define IEEE80211_OFDM_RATES_MASK 0x00000FF0
#define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
IEEE80211_OFDM_RATE_12MB_MASK | \
IEEE80211_OFDM_RATE_24MB_MASK)
#define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
IEEE80211_OFDM_RATE_9MB_MASK | \
IEEE80211_OFDM_RATE_18MB_MASK | \
IEEE80211_OFDM_RATE_36MB_MASK | \
IEEE80211_OFDM_RATE_48MB_MASK | \
IEEE80211_OFDM_RATE_54MB_MASK)
#define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
IEEE80211_CCK_DEFAULT_RATES_MASK)
#define IEEE80211_NUM_OFDM_RATES 8
#define IEEE80211_NUM_CCK_RATES 4
#define IEEE80211_OFDM_SHIFT_MASK_A 4
/* NOTE: This data is for statistical purposes; not all hardware provides this
* information for frames received. Not setting these will not cause
* any adverse affects. */
struct ieee80211_rx_stats {
u32 mac_time;
s8 rssi;
u8 signal;
u8 noise;
u16 rate; /* in 100 kbps */
u8 received_channel;
u8 control;
u8 mask;
u8 freq;
u16 len;
};
/* IEEE 802.11 requires that STA supports concurrent reception of at least
* three fragmented frames. This define can be increased to support more
* concurrent frames, but it should be noted that each entry can consume about
* 2 kB of RAM and increasing cache size will slow down frame reassembly. */
#define IEEE80211_FRAG_CACHE_LEN 4
struct ieee80211_frag_entry {
unsigned long first_frag_time;
unsigned int seq;
unsigned int last_frag;
struct sk_buff *skb;
u8 src_addr[ETH_ALEN];
u8 dst_addr[ETH_ALEN];
};
struct ieee80211_stats {
unsigned int tx_unicast_frames;
unsigned int tx_multicast_frames;
unsigned int tx_fragments;
unsigned int tx_unicast_octets;
unsigned int tx_multicast_octets;
unsigned int tx_deferred_transmissions;
unsigned int tx_single_retry_frames;
unsigned int tx_multiple_retry_frames;
unsigned int tx_retry_limit_exceeded;
unsigned int tx_discards;
unsigned int rx_unicast_frames;
unsigned int rx_multicast_frames;
unsigned int rx_fragments;
unsigned int rx_unicast_octets;
unsigned int rx_multicast_octets;
unsigned int rx_fcs_errors;
unsigned int rx_discards_no_buffer;
unsigned int tx_discards_wrong_sa;
unsigned int rx_discards_undecryptable;
unsigned int rx_message_in_msg_fragments;
unsigned int rx_message_in_bad_msg_fragments;
};
struct ieee80211_device;
#include "ieee80211_crypt.h"
#define SEC_KEY_1 (1<<0)
#define SEC_KEY_2 (1<<1)
#define SEC_KEY_3 (1<<2)
#define SEC_KEY_4 (1<<3)
#define SEC_ACTIVE_KEY (1<<4)
#define SEC_AUTH_MODE (1<<5)
#define SEC_UNICAST_GROUP (1<<6)
#define SEC_LEVEL (1<<7)
#define SEC_ENABLED (1<<8)
#define SEC_LEVEL_0 0 /* None */
#define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
#define SEC_LEVEL_2 2 /* Level 1 + TKIP */
#define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
#define SEC_LEVEL_3 4 /* Level 2 + CCMP */
#define WEP_KEYS 4
#define WEP_KEY_LEN 13
struct ieee80211_security {
u16 active_key:2,
enabled:1,
auth_mode:2,
auth_algo:4,
unicast_uses_group:1;
u8 key_sizes[WEP_KEYS];
u8 keys[WEP_KEYS][WEP_KEY_LEN];
u8 level;
u16 flags;
} __attribute__ ((packed));
/*
802.11 data frame from AP
,-------------------------------------------------------------------.
Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
|------|------|---------|---------|---------|------|---------|------|
Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
| | tion | (BSSID) | | | ence | data | |
`-------------------------------------------------------------------'
Total: 28-2340 bytes
*/
struct ieee80211_header_data {
u16 frame_ctl;
u16 duration_id;
u8 addr1[6];
u8 addr2[6];
u8 addr3[6];
u16 seq_ctrl;
};
#define BEACON_PROBE_SSID_ID_POSITION 12
/* Management Frame Information Element Types */
#define MFIE_TYPE_SSID 0
#define MFIE_TYPE_RATES 1
#define MFIE_TYPE_FH_SET 2
#define MFIE_TYPE_DS_SET 3
#define MFIE_TYPE_CF_SET 4
#define MFIE_TYPE_TIM 5
#define MFIE_TYPE_IBSS_SET 6
#define MFIE_TYPE_CHALLENGE 16
#define MFIE_TYPE_RSN 48
#define MFIE_TYPE_RATES_EX 50
#define MFIE_TYPE_GENERIC 221
struct ieee80211_info_element_hdr {
u8 id;
u8 len;
} __attribute__ ((packed));
struct ieee80211_info_element {
u8 id;
u8 len;
u8 data[0];
} __attribute__ ((packed));
/*
* These are the data types that can make up management packets
*
u16 auth_algorithm;
u16 auth_sequence;
u16 beacon_interval;
u16 capability;
u8 current_ap[ETH_ALEN];
u16 listen_interval;
struct {
u16 association_id:14, reserved:2;
} __attribute__ ((packed));
u32 time_stamp[2];
u16 reason;
u16 status;
*/
struct ieee80211_authentication {
struct ieee80211_header_data header;
u16 algorithm;
u16 transaction;
u16 status;
struct ieee80211_info_element info_element;
} __attribute__ ((packed));
struct ieee80211_probe_response {
struct ieee80211_header_data header;
u32 time_stamp[2];
u16 beacon_interval;
u16 capability;
struct ieee80211_info_element info_element;
} __attribute__ ((packed));
struct ieee80211_assoc_request_frame {
u16 capability;
u16 listen_interval;
u8 current_ap[ETH_ALEN];
struct ieee80211_info_element info_element;
} __attribute__ ((packed));
struct ieee80211_assoc_response_frame {
struct ieee80211_hdr_3addr header;
u16 capability;
u16 status;
u16 aid;
struct ieee80211_info_element info_element; /* supported rates */
} __attribute__ ((packed));
struct ieee80211_txb {
u8 nr_frags;
u8 encrypted;
u16 reserved;
u16 frag_size;
u16 payload_size;
struct sk_buff *fragments[0];
};
/* SWEEP TABLE ENTRIES NUMBER*/
#define MAX_SWEEP_TAB_ENTRIES 42
#define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
/* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
* only use 8, and then use extended rates for the remaining supported
* rates. Other APs, however, stick all of their supported rates on the
* main rates information element... */
#define MAX_RATES_LENGTH ((u8)12)
#define MAX_RATES_EX_LENGTH ((u8)16)
#define MAX_NETWORK_COUNT 128
#define CRC_LENGTH 4U
#define MAX_WPA_IE_LEN 64
#define NETWORK_EMPTY_ESSID (1<<0)
#define NETWORK_HAS_OFDM (1<<1)
#define NETWORK_HAS_CCK (1<<2)
struct ieee80211_network {
/* These entries are used to identify a unique network */
u8 bssid[ETH_ALEN];
u8 channel;
/* Ensure null-terminated for any debug msgs */
u8 ssid[IW_ESSID_MAX_SIZE + 1];
u8 ssid_len;
/* These are network statistics */
struct ieee80211_rx_stats stats;
u16 capability;
u8 rates[MAX_RATES_LENGTH];
u8 rates_len;
u8 rates_ex[MAX_RATES_EX_LENGTH];
u8 rates_ex_len;
unsigned long last_scanned;
u8 mode;
u8 flags;
u32 last_associate;
u32 time_stamp[2];
u16 beacon_interval;
u16 listen_interval;
u16 atim_window;
u8 wpa_ie[MAX_WPA_IE_LEN];
size_t wpa_ie_len;
u8 rsn_ie[MAX_WPA_IE_LEN];
size_t rsn_ie_len;
struct list_head list;
};
enum ieee80211_state {
IEEE80211_UNINITIALIZED = 0,
IEEE80211_INITIALIZED,
IEEE80211_ASSOCIATING,
IEEE80211_ASSOCIATED,
IEEE80211_AUTHENTICATING,
IEEE80211_AUTHENTICATED,
IEEE80211_SHUTDOWN
};
#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
#define DEFAULT_FTS 2346
#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
#define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
extern inline int is_multicast_ether_addr(const u8 *addr)
{
return ((addr[0] != 0xff) && (0x01 & addr[0]));
}
extern inline int is_broadcast_ether_addr(const u8 *addr)
{
return ((addr[0] == 0xff) && (addr[1] == 0xff) && (addr[2] == 0xff) && \
(addr[3] == 0xff) && (addr[4] == 0xff) && (addr[5] == 0xff));
}
#define CFG_IEEE80211_RESERVE_FCS (1<<0)
#define CFG_IEEE80211_COMPUTE_FCS (1<<1)
struct ieee80211_device {
struct net_device *dev;
/* Bookkeeping structures */
struct net_device_stats stats;
struct ieee80211_stats ieee_stats;
/* Probe / Beacon management */
struct list_head network_free_list;
struct list_head network_list;
struct ieee80211_network *networks;
int scans;
int scan_age;
int iw_mode; /* operating mode (IW_MODE_*) */
spinlock_t lock;
int tx_headroom; /* Set to size of any additional room needed at front
* of allocated Tx SKBs */
u32 config;
/* WEP and other encryption related settings at the device level */
int open_wep; /* Set to 1 to allow unencrypted frames */
int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
* WEP key changes */
/* If the host performs {en,de}cryption, then set to 1 */
int host_encrypt;
int host_decrypt;
int ieee802_1x; /* is IEEE 802.1X used */
/* WPA data */
int wpa_enabled;
int drop_unencrypted;
int tkip_countermeasures;
int privacy_invoked;
size_t wpa_ie_len;
u8 *wpa_ie;
struct list_head crypt_deinit_list;
struct ieee80211_crypt_data *crypt[WEP_KEYS];
int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
struct timer_list crypt_deinit_timer;
int bcrx_sta_key; /* use individual keys to override default keys even
* with RX of broad/multicast frames */
/* Fragmentation structures */
struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
unsigned int frag_next_idx;
u16 fts; /* Fragmentation Threshold */
/* Association info */
u8 bssid[ETH_ALEN];
enum ieee80211_state state;
int mode; /* A, B, G */
int modulation; /* CCK, OFDM */
int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
int abg_ture; /* ABG flag */
/* Callback functions */
void (*set_security)(struct net_device *dev,
struct ieee80211_security *sec);
int (*hard_start_xmit)(struct ieee80211_txb *txb,
struct net_device *dev);
int (*reset_port)(struct net_device *dev);
/* This must be the last item so that it points to the data
* allocated beyond this structure by alloc_ieee80211 */
u8 priv[0];
};
#define IEEE_A (1<<0)
#define IEEE_B (1<<1)
#define IEEE_G (1<<2)
#define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
extern inline void *ieee80211_priv(struct net_device *dev)
{
return ((struct ieee80211_device *)netdev_priv(dev))->priv;
}
extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
{
/* Single white space is for Linksys APs */
if (essid_len == 1 && essid[0] == ' ')
return 1;
/* Otherwise, if the entire essid is 0, we assume it is hidden */
while (essid_len) {
essid_len--;
if (essid[essid_len] != '\0')
return 0;
}
return 1;
}
extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee, int mode)
{
/*
* It is possible for both access points and our device to support
* combinations of modes, so as long as there is one valid combination
* of ap/device supported modes, then return success
*
*/
if ((mode & IEEE_A) &&
(ieee->modulation & IEEE80211_OFDM_MODULATION) &&
(ieee->freq_band & IEEE80211_52GHZ_BAND))
return 1;
if ((mode & IEEE_G) &&
(ieee->modulation & IEEE80211_OFDM_MODULATION) &&
(ieee->freq_band & IEEE80211_24GHZ_BAND))
return 1;
if ((mode & IEEE_B) &&
(ieee->modulation & IEEE80211_CCK_MODULATION) &&
(ieee->freq_band & IEEE80211_24GHZ_BAND))
return 1;
return 0;
}
extern inline int ieee80211_get_hdrlen(u16 fc)
{
int hdrlen = 24;
switch (WLAN_FC_GET_TYPE(fc)) {
case IEEE80211_FTYPE_DATA:
if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
hdrlen = 30; /* Addr4 */
break;
case IEEE80211_FTYPE_CTL:
switch (WLAN_FC_GET_STYPE(fc)) {
case IEEE80211_STYPE_CTS:
case IEEE80211_STYPE_ACK:
hdrlen = 10;
break;
default:
hdrlen = 16;
break;
}
break;
}
return hdrlen;
}
/* ieee80211.c */
extern void free_ieee80211(struct net_device *dev);
extern struct net_device *alloc_ieee80211(int sizeof_priv);
extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
/* ieee80211_tx.c */
extern int ieee80211_xmit(struct sk_buff *skb,
struct net_device *dev);
extern void ieee80211_txb_free(struct ieee80211_txb *);
/* ieee80211_rx.c */
extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
struct ieee80211_rx_stats *rx_stats);
extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
struct ieee80211_hdr *header,
struct ieee80211_rx_stats *stats);
/* iee80211_wx.c */
extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *key);
extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *key);
extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *key);
extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
{
ieee->scans++;
}
extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
{
return ieee->scans;
}
static inline const char *escape_essid(const char *essid, u8 essid_len) {
static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
const char *s = essid;
char *d = escaped;
if (ieee80211_is_empty_essid(essid, essid_len)) {
memcpy(escaped, "<hidden>", sizeof("<hidden>"));
return escaped;
}
essid_len = min(essid_len, (u8)IW_ESSID_MAX_SIZE);
while (essid_len--) {
if (*s == '\0') {
*d++ = '\\';
*d++ = '0';
s++;
} else {
*d++ = *s++;
}
}
*d = '\0';
return escaped;
}
#endif /* IEEE80211_H */

86
include/net/ieee80211_crypt.h Normal file
View File

@ -0,0 +1,86 @@
/*
* Original code based on Host AP (software wireless LAN access point) driver
* for Intersil Prism2/2.5/3.
*
* Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
* <jkmaline@cc.hut.fi>
* Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
*
* Adaption to a generic IEEE 802.11 stack by James Ketrenos
* <jketreno@linux.intel.com>
*
* Copyright (c) 2004, Intel Corporation
*
* 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. See README and COPYING for
* more details.
*/
/*
* This file defines the interface to the ieee80211 crypto module.
*/
#ifndef IEEE80211_CRYPT_H
#define IEEE80211_CRYPT_H
#include <linux/skbuff.h>
struct ieee80211_crypto_ops {
const char *name;
/* init new crypto context (e.g., allocate private data space,
* select IV, etc.); returns NULL on failure or pointer to allocated
* private data on success */
void * (*init)(int keyidx);
/* deinitialize crypto context and free allocated private data */
void (*deinit)(void *priv);
/* encrypt/decrypt return < 0 on error or >= 0 on success. The return
* value from decrypt_mpdu is passed as the keyidx value for
* decrypt_msdu. skb must have enough head and tail room for the
* encryption; if not, error will be returned; these functions are
* called for all MPDUs (i.e., fragments).
*/
int (*encrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);
int (*decrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);
/* These functions are called for full MSDUs, i.e. full frames.
* These can be NULL if full MSDU operations are not needed. */
int (*encrypt_msdu)(struct sk_buff *skb, int hdr_len, void *priv);
int (*decrypt_msdu)(struct sk_buff *skb, int keyidx, int hdr_len,
void *priv);
int (*set_key)(void *key, int len, u8 *seq, void *priv);
int (*get_key)(void *key, int len, u8 *seq, void *priv);
/* procfs handler for printing out key information and possible
* statistics */
char * (*print_stats)(char *p, void *priv);
/* maximum number of bytes added by encryption; encrypt buf is
* allocated with extra_prefix_len bytes, copy of in_buf, and
* extra_postfix_len; encrypt need not use all this space, but
* the result must start at the beginning of the buffer and correct
* length must be returned */
int extra_prefix_len, extra_postfix_len;
struct module *owner;
};
struct ieee80211_crypt_data {
struct list_head list; /* delayed deletion list */
struct ieee80211_crypto_ops *ops;
void *priv;
atomic_t refcnt;
};
int ieee80211_register_crypto_ops(struct ieee80211_crypto_ops *ops);
int ieee80211_unregister_crypto_ops(struct ieee80211_crypto_ops *ops);
struct ieee80211_crypto_ops * ieee80211_get_crypto_ops(const char *name);
void ieee80211_crypt_deinit_entries(struct ieee80211_device *, int);
void ieee80211_crypt_deinit_handler(unsigned long);
void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee,
struct ieee80211_crypt_data **crypt);
#endif

2
net/Kconfig
View File

@ -640,6 +640,8 @@ source "net/irda/Kconfig"
source "net/bluetooth/Kconfig"
source "net/ieee80211/Kconfig"
source "drivers/net/Kconfig"
endmenu

1
net/Makefile
View File

@ -42,6 +42,7 @@ obj-$(CONFIG_DECNET) += decnet/
obj-$(CONFIG_ECONET) += econet/
obj-$(CONFIG_VLAN_8021Q) += 8021q/
obj-$(CONFIG_IP_SCTP) += sctp/
obj-$(CONFIG_IEEE80211) += ieee80211/
ifeq ($(CONFIG_NET),y)
obj-$(CONFIG_SYSCTL) += sysctl_net.o

74
net/core/wireless.c
View File

@ -2,7 +2,7 @@
* This file implement the Wireless Extensions APIs.
*
* Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com>
* Copyright (c) 1997-2004 Jean Tourrilhes, All Rights Reserved.
* Copyright (c) 1997-2005 Jean Tourrilhes, All Rights Reserved.
*
* (As all part of the Linux kernel, this file is GPL)
*/
@ -187,6 +187,12 @@ static const struct iw_ioctl_description standard_ioctl[] = {
.header_type = IW_HEADER_TYPE_ADDR,
.flags = IW_DESCR_FLAG_DUMP,
},
[SIOCSIWMLME - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.min_tokens = sizeof(struct iw_mlme),
.max_tokens = sizeof(struct iw_mlme),
},
[SIOCGIWAPLIST - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = sizeof(struct sockaddr) +
@ -195,7 +201,10 @@ static const struct iw_ioctl_description standard_ioctl[] = {
.flags = IW_DESCR_FLAG_NOMAX,
},
[SIOCSIWSCAN - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_PARAM,
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.min_tokens = 0,
.max_tokens = sizeof(struct iw_scan_req),
},
[SIOCGIWSCAN - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
@ -273,6 +282,42 @@ static const struct iw_ioctl_description standard_ioctl[] = {
[SIOCGIWPOWER - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_PARAM,
},
[SIOCSIWGENIE - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.max_tokens = IW_GENERIC_IE_MAX,
},
[SIOCGIWGENIE - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.max_tokens = IW_GENERIC_IE_MAX,
},
[SIOCSIWAUTH - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_PARAM,
},
[SIOCGIWAUTH - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_PARAM,
},
[SIOCSIWENCODEEXT - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.min_tokens = sizeof(struct iw_encode_ext),
.max_tokens = sizeof(struct iw_encode_ext) +
IW_ENCODING_TOKEN_MAX,
},
[SIOCGIWENCODEEXT - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.min_tokens = sizeof(struct iw_encode_ext),
.max_tokens = sizeof(struct iw_encode_ext) +
IW_ENCODING_TOKEN_MAX,
},
[SIOCSIWPMKSA - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.min_tokens = sizeof(struct iw_pmksa),
.max_tokens = sizeof(struct iw_pmksa),
},
};
static const int standard_ioctl_num = (sizeof(standard_ioctl) /
sizeof(struct iw_ioctl_description));
@ -299,6 +344,31 @@ static const struct iw_ioctl_description standard_event[] = {
[IWEVEXPIRED - IWEVFIRST] = {
.header_type = IW_HEADER_TYPE_ADDR,
},
[IWEVGENIE - IWEVFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.max_tokens = IW_GENERIC_IE_MAX,
},
[IWEVMICHAELMICFAILURE - IWEVFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.max_tokens = sizeof(struct iw_michaelmicfailure),
},
[IWEVASSOCREQIE - IWEVFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.max_tokens = IW_GENERIC_IE_MAX,
},
[IWEVASSOCRESPIE - IWEVFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.max_tokens = IW_GENERIC_IE_MAX,
},
[IWEVPMKIDCAND - IWEVFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.max_tokens = sizeof(struct iw_pmkid_cand),
},
};
static const int standard_event_num = (sizeof(standard_event) /
sizeof(struct iw_ioctl_description));

67
net/ieee80211/Kconfig Normal file
View File

@ -0,0 +1,67 @@
config IEEE80211
tristate "Generic IEEE 802.11 Networking Stack"
select NET_RADIO
---help---
This option enables the hardware independent IEEE 802.11
networking stack.
config IEEE80211_DEBUG
bool "Enable full debugging output"
depends on IEEE80211
---help---
This option will enable debug tracing output for the
ieee80211 network stack.
This will result in the kernel module being ~70k larger. You
can control which debug output is sent to the kernel log by
setting the value in
/proc/net/ieee80211/debug_level
For example:
% echo 0x00000FFO > /proc/net/ieee80211/debug_level
For a list of values you can assign to debug_level, you
can look at the bit mask values in <net/ieee80211.h>
If you are not trying to debug or develop the ieee80211
subsystem, you most likely want to say N here.
config IEEE80211_CRYPT_WEP
tristate "IEEE 802.11 WEP encryption (802.1x)"
depends on IEEE80211
select CRYPTO
select CRYPTO_ARC4
select CRC32
---help---
Include software based cipher suites in support of IEEE
802.11's WEP. This is needed for WEP as well as 802.1x.
This can be compiled as a modules and it will be called
"ieee80211_crypt_wep".
config IEEE80211_CRYPT_CCMP
tristate "IEEE 802.11i CCMP support"
depends on IEEE80211
select CRYPTO_AES
---help---
Include software based cipher suites in support of IEEE 802.11i
(aka TGi, WPA, WPA2, WPA-PSK, etc.) for use with CCMP enabled
networks.
This can be compiled as a modules and it will be called
"ieee80211_crypt_ccmp".
config IEEE80211_CRYPT_TKIP
tristate "IEEE 802.11i TKIP encryption"
depends on IEEE80211
select CRYPTO_MICHAEL_MIC
---help---
Include software based cipher suites in support of IEEE 802.11i
(aka TGi, WPA, WPA2, WPA-PSK, etc.) for use with TKIP enabled
networks.
This can be compiled as a modules and it will be called
"ieee80211_crypt_tkip".

11
net/ieee80211/Makefile Normal file
View File

@ -0,0 +1,11 @@
obj-$(CONFIG_IEEE80211) += ieee80211.o
obj-$(CONFIG_IEEE80211) += ieee80211_crypt.o
obj-$(CONFIG_IEEE80211_CRYPT_WEP) += ieee80211_crypt_wep.o
obj-$(CONFIG_IEEE80211_CRYPT_CCMP) += ieee80211_crypt_ccmp.o
obj-$(CONFIG_IEEE80211_CRYPT_TKIP) += ieee80211_crypt_tkip.o
ieee80211-objs := \
ieee80211_module.o \
ieee80211_tx.o \
ieee80211_rx.o \
ieee80211_wx.o

259
net/ieee80211/ieee80211_crypt.c Normal file
View File

@ -0,0 +1,259 @@
/*
* Host AP crypto routines
*
* Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
* Portions Copyright (C) 2004, Intel Corporation <jketreno@linux.intel.com>
*
* 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. See README and COPYING for
* more details.
*
*/
#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <asm/string.h>
#include <asm/errno.h>
#include <net/ieee80211.h>
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("HostAP crypto");
MODULE_LICENSE("GPL");
struct ieee80211_crypto_alg {
struct list_head list;
struct ieee80211_crypto_ops *ops;
};
struct ieee80211_crypto {
struct list_head algs;
spinlock_t lock;
};
static struct ieee80211_crypto *hcrypt;
void ieee80211_crypt_deinit_entries(struct ieee80211_device *ieee,
int force)
{
struct list_head *ptr, *n;
struct ieee80211_crypt_data *entry;
for (ptr = ieee->crypt_deinit_list.next, n = ptr->next;
ptr != &ieee->crypt_deinit_list; ptr = n, n = ptr->next) {
entry = list_entry(ptr, struct ieee80211_crypt_data, list);
if (atomic_read(&entry->refcnt) != 0 && !force)
continue;
list_del(ptr);
if (entry->ops) {
entry->ops->deinit(entry->priv);
module_put(entry->ops->owner);
}
kfree(entry);
}
}
void ieee80211_crypt_deinit_handler(unsigned long data)
{
struct ieee80211_device *ieee = (struct ieee80211_device *)data;
unsigned long flags;
spin_lock_irqsave(&ieee->lock, flags);
ieee80211_crypt_deinit_entries(ieee, 0);
if (!list_empty(&ieee->crypt_deinit_list)) {
printk(KERN_DEBUG "%s: entries remaining in delayed crypt "
"deletion list\n", ieee->dev->name);
ieee->crypt_deinit_timer.expires = jiffies + HZ;
add_timer(&ieee->crypt_deinit_timer);
}
spin_unlock_irqrestore(&ieee->lock, flags);
}
void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee,
struct ieee80211_crypt_data **crypt)
{
struct ieee80211_crypt_data *tmp;
unsigned long flags;
if (*crypt == NULL)
return;
tmp = *crypt;
*crypt = NULL;
/* must not run ops->deinit() while there may be pending encrypt or
* decrypt operations. Use a list of delayed deinits to avoid needing
* locking. */
spin_lock_irqsave(&ieee->lock, flags);
list_add(&tmp->list, &ieee->crypt_deinit_list);
if (!timer_pending(&ieee->crypt_deinit_timer)) {
ieee->crypt_deinit_timer.expires = jiffies + HZ;
add_timer(&ieee->crypt_deinit_timer);
}
spin_unlock_irqrestore(&ieee->lock, flags);
}
int ieee80211_register_crypto_ops(struct ieee80211_crypto_ops *ops)
{
unsigned long flags;
struct ieee80211_crypto_alg *alg;
if (hcrypt == NULL)
return -1;
alg = kmalloc(sizeof(*alg), GFP_KERNEL);
if (alg == NULL)
return -ENOMEM;
memset(alg, 0, sizeof(*alg));
alg->ops = ops;
spin_lock_irqsave(&hcrypt->lock, flags);
list_add(&alg->list, &hcrypt->algs);
spin_unlock_irqrestore(&hcrypt->lock, flags);
printk(KERN_DEBUG "ieee80211_crypt: registered algorithm '%s'\n",
ops->name);
return 0;
}
int ieee80211_unregister_crypto_ops(struct ieee80211_crypto_ops *ops)
{
unsigned long flags;
struct list_head *ptr;
struct ieee80211_crypto_alg *del_alg = NULL;
if (hcrypt == NULL)
return -1;
spin_lock_irqsave(&hcrypt->lock, flags);
for (ptr = hcrypt->algs.next; ptr != &hcrypt->algs; ptr = ptr->next) {
struct ieee80211_crypto_alg *alg =
(struct ieee80211_crypto_alg *) ptr;
if (alg->ops == ops) {
list_del(&alg->list);
del_alg = alg;
break;
}
}
spin_unlock_irqrestore(&hcrypt->lock, flags);
if (del_alg) {
printk(KERN_DEBUG "ieee80211_crypt: unregistered algorithm "
"'%s'\n", ops->name);
kfree(del_alg);
}
return del_alg ? 0 : -1;
}
struct ieee80211_crypto_ops * ieee80211_get_crypto_ops(const char *name)
{
unsigned long flags;
struct list_head *ptr;
struct ieee80211_crypto_alg *found_alg = NULL;
if (hcrypt == NULL)
return NULL;
spin_lock_irqsave(&hcrypt->lock, flags);
for (ptr = hcrypt->algs.next; ptr != &hcrypt->algs; ptr = ptr->next) {
struct ieee80211_crypto_alg *alg =
(struct ieee80211_crypto_alg *) ptr;
if (strcmp(alg->ops->name, name) == 0) {
found_alg = alg;
break;
}
}
spin_unlock_irqrestore(&hcrypt->lock, flags);
if (found_alg)
return found_alg->ops;
else
return NULL;
}
static void * ieee80211_crypt_null_init(int keyidx) { return (void *) 1; }
static void ieee80211_crypt_null_deinit(void *priv) {}
static struct ieee80211_crypto_ops ieee80211_crypt_null = {
.name = "NULL",
.init = ieee80211_crypt_null_init,
.deinit = ieee80211_crypt_null_deinit,
.encrypt_mpdu = NULL,
.decrypt_mpdu = NULL,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = NULL,
.get_key = NULL,
.extra_prefix_len = 0,
.extra_postfix_len = 0,
.owner = THIS_MODULE,
};
static int __init ieee80211_crypto_init(void)
{
int ret = -ENOMEM;
hcrypt = kmalloc(sizeof(*hcrypt), GFP_KERNEL);
if (!hcrypt)
goto out;
memset(hcrypt, 0, sizeof(*hcrypt));
INIT_LIST_HEAD(&hcrypt->algs);
spin_lock_init(&hcrypt->lock);
ret = ieee80211_register_crypto_ops(&ieee80211_crypt_null);
if (ret < 0) {
kfree(hcrypt);
hcrypt = NULL;
}
out:
return ret;
}
static void __exit ieee80211_crypto_deinit(void)
{
struct list_head *ptr, *n;
if (hcrypt == NULL)
return;
for (ptr = hcrypt->algs.next, n = ptr->next; ptr != &hcrypt->algs;
ptr = n, n = ptr->next) {
struct ieee80211_crypto_alg *alg =
(struct ieee80211_crypto_alg *) ptr;
list_del(ptr);
printk(KERN_DEBUG "ieee80211_crypt: unregistered algorithm "
"'%s' (deinit)\n", alg->ops->name);
kfree(alg);
}
kfree(hcrypt);
}
EXPORT_SYMBOL(ieee80211_crypt_deinit_entries);
EXPORT_SYMBOL(ieee80211_crypt_deinit_handler);
EXPORT_SYMBOL(ieee80211_crypt_delayed_deinit);
EXPORT_SYMBOL(ieee80211_register_crypto_ops);
EXPORT_SYMBOL(ieee80211_unregister_crypto_ops);
EXPORT_SYMBOL(ieee80211_get_crypto_ops);
module_init(ieee80211_crypto_init);
module_exit(ieee80211_crypto_deinit);

470
net/ieee80211/ieee80211_crypt_ccmp.c Normal file
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/*
* Host AP crypt: host-based CCMP encryption implementation for Host AP driver
*
* Copyright (c) 2003-2004, Jouni Malinen <jkmaline@cc.hut.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. See README and COPYING for
* more details.
*/
#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/if_ether.h>
#include <linux/if_arp.h>
#include <asm/string.h>
#include <linux/wireless.h>
#include <net/ieee80211.h>
#include <linux/crypto.h>
#include <asm/scatterlist.h>
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("Host AP crypt: CCMP");
MODULE_LICENSE("GPL");
#define AES_BLOCK_LEN 16
#define CCMP_HDR_LEN 8
#define CCMP_MIC_LEN 8
#define CCMP_TK_LEN 16
#define CCMP_PN_LEN 6
struct ieee80211_ccmp_data {
u8 key[CCMP_TK_LEN];
int key_set;
u8 tx_pn[CCMP_PN_LEN];
u8 rx_pn[CCMP_PN_LEN];
u32 dot11RSNAStatsCCMPFormatErrors;
u32 dot11RSNAStatsCCMPReplays;
u32 dot11RSNAStatsCCMPDecryptErrors;
int key_idx;
struct crypto_tfm *tfm;
/* scratch buffers for virt_to_page() (crypto API) */
u8 tx_b0[AES_BLOCK_LEN], tx_b[AES_BLOCK_LEN],
tx_e[AES_BLOCK_LEN], tx_s0[AES_BLOCK_LEN];
u8 rx_b0[AES_BLOCK_LEN], rx_b[AES_BLOCK_LEN], rx_a[AES_BLOCK_LEN];
};
void ieee80211_ccmp_aes_encrypt(struct crypto_tfm *tfm,
const u8 pt[16], u8 ct[16])
{
struct scatterlist src, dst;
src.page = virt_to_page(pt);
src.offset = offset_in_page(pt);
src.length = AES_BLOCK_LEN;
dst.page = virt_to_page(ct);
dst.offset = offset_in_page(ct);
dst.length = AES_BLOCK_LEN;
crypto_cipher_encrypt(tfm, &dst, &src, AES_BLOCK_LEN);
}
static void * ieee80211_ccmp_init(int key_idx)
{
struct ieee80211_ccmp_data *priv;
priv = kmalloc(sizeof(*priv), GFP_ATOMIC);
if (priv == NULL)
goto fail;
memset(priv, 0, sizeof(*priv));
priv->key_idx = key_idx;
priv->tfm = crypto_alloc_tfm("aes", 0);
if (priv->tfm == NULL) {
printk(KERN_DEBUG "ieee80211_crypt_ccmp: could not allocate "
"crypto API aes\n");
goto fail;
}
return priv;
fail:
if (priv) {
if (priv->tfm)
crypto_free_tfm(priv->tfm);
kfree(priv);
}
return NULL;
}
static void ieee80211_ccmp_deinit(void *priv)
{
struct ieee80211_ccmp_data *_priv = priv;
if (_priv && _priv->tfm)
crypto_free_tfm(_priv->tfm);
kfree(priv);
}
static inline void xor_block(u8 *b, u8 *a, size_t len)
{
int i;
for (i = 0; i < len; i++)
b[i] ^= a[i];
}
static void ccmp_init_blocks(struct crypto_tfm *tfm,
struct ieee80211_hdr *hdr,
u8 *pn, size_t dlen, u8 *b0, u8 *auth,
u8 *s0)
{
u8 *pos, qc = 0;
size_t aad_len;
u16 fc;
int a4_included, qc_included;
u8 aad[2 * AES_BLOCK_LEN];
fc = le16_to_cpu(hdr->frame_ctl);
a4_included = ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS));
qc_included = ((WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA) &&
(WLAN_FC_GET_STYPE(fc) & 0x08));
aad_len = 22;
if (a4_included)
aad_len += 6;
if (qc_included) {
pos = (u8 *) &hdr->addr4;
if (a4_included)
pos += 6;
qc = *pos & 0x0f;
aad_len += 2;
}
/* CCM Initial Block:
* Flag (Include authentication header, M=3 (8-octet MIC),
* L=1 (2-octet Dlen))
* Nonce: 0x00 | A2 | PN
* Dlen */
b0[0] = 0x59;
b0[1] = qc;
memcpy(b0 + 2, hdr->addr2, ETH_ALEN);
memcpy(b0 + 8, pn, CCMP_PN_LEN);
b0[14] = (dlen >> 8) & 0xff;
b0[15] = dlen & 0xff;
/* AAD:
* FC with bits 4..6 and 11..13 masked to zero; 14 is always one
* A1 | A2 | A3
* SC with bits 4..15 (seq#) masked to zero
* A4 (if present)
* QC (if present)
*/
pos = (u8 *) hdr;
aad[0] = 0; /* aad_len >> 8 */
aad[1] = aad_len & 0xff;
aad[2] = pos[0] & 0x8f;
aad[3] = pos[1] & 0xc7;
memcpy(aad + 4, hdr->addr1, 3 * ETH_ALEN);
pos = (u8 *) &hdr->seq_ctl;
aad[22] = pos[0] & 0x0f;
aad[23] = 0; /* all bits masked */
memset(aad + 24, 0, 8);
if (a4_included)
memcpy(aad + 24, hdr->addr4, ETH_ALEN);
if (qc_included) {
aad[a4_included ? 30 : 24] = qc;
/* rest of QC masked */
}
/* Start with the first block and AAD */
ieee80211_ccmp_aes_encrypt(tfm, b0, auth);
xor_block(auth, aad, AES_BLOCK_LEN);
ieee80211_ccmp_aes_encrypt(tfm, auth, auth);
xor_block(auth, &aad[AES_BLOCK_LEN], AES_BLOCK_LEN);
ieee80211_ccmp_aes_encrypt(tfm, auth, auth);
b0[0] &= 0x07;
b0[14] = b0[15] = 0;
ieee80211_ccmp_aes_encrypt(tfm, b0, s0);
}
static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct ieee80211_ccmp_data *key = priv;
int data_len, i, blocks, last, len;
u8 *pos, *mic;
struct ieee80211_hdr *hdr;
u8 *b0 = key->tx_b0;
u8 *b = key->tx_b;
u8 *e = key->tx_e;
u8 *s0 = key->tx_s0;
if (skb_headroom(skb) < CCMP_HDR_LEN ||
skb_tailroom(skb) < CCMP_MIC_LEN ||
skb->len < hdr_len)
return -1;
data_len = skb->len - hdr_len;
pos = skb_push(skb, CCMP_HDR_LEN);
memmove(pos, pos + CCMP_HDR_LEN, hdr_len);
pos += hdr_len;
mic = skb_put(skb, CCMP_MIC_LEN);
i = CCMP_PN_LEN - 1;
while (i >= 0) {
key->tx_pn[i]++;
if (key->tx_pn[i] != 0)
break;
i--;
}
*pos++ = key->tx_pn[5];
*pos++ = key->tx_pn[4];
*pos++ = 0;
*pos++ = (key->key_idx << 6) | (1 << 5) /* Ext IV included */;
*pos++ = key->tx_pn[3];
*pos++ = key->tx_pn[2];
*pos++ = key->tx_pn[1];
*pos++ = key->tx_pn[0];
hdr = (struct ieee80211_hdr *) skb->data;
ccmp_init_blocks(key->tfm, hdr, key->tx_pn, data_len, b0, b, s0);
blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
last = data_len % AES_BLOCK_LEN;
for (i = 1; i <= blocks; i++) {
len = (i == blocks && last) ? last : AES_BLOCK_LEN;
/* Authentication */
xor_block(b, pos, len);
ieee80211_ccmp_aes_encrypt(key->tfm, b, b);
/* Encryption, with counter */
b0[14] = (i >> 8) & 0xff;
b0[15] = i & 0xff;
ieee80211_ccmp_aes_encrypt(key->tfm, b0, e);
xor_block(pos, e, len);
pos += len;
}
for (i = 0; i < CCMP_MIC_LEN; i++)
mic[i] = b[i] ^ s0[i];
return 0;
}
static int ieee80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct ieee80211_ccmp_data *key = priv;
u8 keyidx, *pos;
struct ieee80211_hdr *hdr;
u8 *b0 = key->rx_b0;
u8 *b = key->rx_b;
u8 *a = key->rx_a;
u8 pn[6];
int i, blocks, last, len;
size_t data_len = skb->len - hdr_len - CCMP_HDR_LEN - CCMP_MIC_LEN;
u8 *mic = skb->data + skb->len - CCMP_MIC_LEN;
if (skb->len < hdr_len + CCMP_HDR_LEN + CCMP_MIC_LEN) {
key->dot11RSNAStatsCCMPFormatErrors++;
return -1;
}
hdr = (struct ieee80211_hdr *) skb->data;
pos = skb->data + hdr_len;
keyidx = pos[3];
if (!(keyidx & (1 << 5))) {
if (net_ratelimit()) {
printk(KERN_DEBUG "CCMP: received packet without ExtIV"
" flag from " MAC_FMT "\n", MAC_ARG(hdr->addr2));
}
key->dot11RSNAStatsCCMPFormatErrors++;
return -2;
}
keyidx >>= 6;
if (key->key_idx != keyidx) {
printk(KERN_DEBUG "CCMP: RX tkey->key_idx=%d frame "
"keyidx=%d priv=%p\n", key->key_idx, keyidx, priv);
return -6;
}
if (!key->key_set) {
if (net_ratelimit()) {
printk(KERN_DEBUG "CCMP: received packet from " MAC_FMT
" with keyid=%d that does not have a configured"
" key\n", MAC_ARG(hdr->addr2), keyidx);
}
return -3;
}
pn[0] = pos[7];
pn[1] = pos[6];
pn[2] = pos[5];
pn[3] = pos[4];
pn[4] = pos[1];
pn[5] = pos[0];
pos += 8;
if (memcmp(pn, key->rx_pn, CCMP_PN_LEN) <= 0) {
if (net_ratelimit()) {
printk(KERN_DEBUG "CCMP: replay detected: STA=" MAC_FMT
" previous PN %02x%02x%02x%02x%02x%02x "
"received PN %02x%02x%02x%02x%02x%02x\n",
MAC_ARG(hdr->addr2), MAC_ARG(key->rx_pn),
MAC_ARG(pn));
}
key->dot11RSNAStatsCCMPReplays++;
return -4;
}
ccmp_init_blocks(key->tfm, hdr, pn, data_len, b0, a, b);
xor_block(mic, b, CCMP_MIC_LEN);
blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
last = data_len % AES_BLOCK_LEN;
for (i = 1; i <= blocks; i++) {
len = (i == blocks && last) ? last : AES_BLOCK_LEN;
/* Decrypt, with counter */
b0[14] = (i >> 8) & 0xff;
b0[15] = i & 0xff;
ieee80211_ccmp_aes_encrypt(key->tfm, b0, b);
xor_block(pos, b, len);
/* Authentication */
xor_block(a, pos, len);
ieee80211_ccmp_aes_encrypt(key->tfm, a, a);
pos += len;
}
if (memcmp(mic, a, CCMP_MIC_LEN) != 0) {
if (net_ratelimit()) {
printk(KERN_DEBUG "CCMP: decrypt failed: STA="
MAC_FMT "\n", MAC_ARG(hdr->addr2));
}
key->dot11RSNAStatsCCMPDecryptErrors++;
return -5;
}
memcpy(key->rx_pn, pn, CCMP_PN_LEN);
/* Remove hdr and MIC */
memmove(skb->data + CCMP_HDR_LEN, skb->data, hdr_len);
skb_pull(skb, CCMP_HDR_LEN);
skb_trim(skb, skb->len - CCMP_MIC_LEN);
return keyidx;
}
static int ieee80211_ccmp_set_key(void *key, int len, u8 *seq, void *priv)
{
struct ieee80211_ccmp_data *data = priv;
int keyidx;
struct crypto_tfm *tfm = data->tfm;
keyidx = data->key_idx;
memset(data, 0, sizeof(*data));
data->key_idx = keyidx;
data->tfm = tfm;
if (len == CCMP_TK_LEN) {
memcpy(data->key, key, CCMP_TK_LEN);
data->key_set = 1;
if (seq) {
data->rx_pn[0] = seq[5];
data->rx_pn[1] = seq[4];
data->rx_pn[2] = seq[3];
data->rx_pn[3] = seq[2];
data->rx_pn[4] = seq[1];
data->rx_pn[5] = seq[0];
}
crypto_cipher_setkey(data->tfm, data->key, CCMP_TK_LEN);
} else if (len == 0)
data->key_set = 0;
else
return -1;
return 0;
}
static int ieee80211_ccmp_get_key(void *key, int len, u8 *seq, void *priv)
{
struct ieee80211_ccmp_data *data = priv;
if (len < CCMP_TK_LEN)
return -1;
if (!data->key_set)
return 0;
memcpy(key, data->key, CCMP_TK_LEN);
if (seq) {
seq[0] = data->tx_pn[5];
seq[1] = data->tx_pn[4];
seq[2] = data->tx_pn[3];
seq[3] = data->tx_pn[2];
seq[4] = data->tx_pn[1];
seq[5] = data->tx_pn[0];
}
return CCMP_TK_LEN;
}
static char * ieee80211_ccmp_print_stats(char *p, void *priv)
{
struct ieee80211_ccmp_data *ccmp = priv;
p += sprintf(p, "key[%d] alg=CCMP key_set=%d "
"tx_pn=%02x%02x%02x%02x%02x%02x "
"rx_pn=%02x%02x%02x%02x%02x%02x "
"format_errors=%d replays=%d decrypt_errors=%d\n",
ccmp->key_idx, ccmp->key_set,
MAC_ARG(ccmp->tx_pn), MAC_ARG(ccmp->rx_pn),
ccmp->dot11RSNAStatsCCMPFormatErrors,
ccmp->dot11RSNAStatsCCMPReplays,
ccmp->dot11RSNAStatsCCMPDecryptErrors);
return p;
}
static struct ieee80211_crypto_ops ieee80211_crypt_ccmp = {
.name = "CCMP",
.init = ieee80211_ccmp_init,
.deinit = ieee80211_ccmp_deinit,
.encrypt_mpdu = ieee80211_ccmp_encrypt,
.decrypt_mpdu = ieee80211_ccmp_decrypt,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = ieee80211_ccmp_set_key,
.get_key = ieee80211_ccmp_get_key,
.print_stats = ieee80211_ccmp_print_stats,
.extra_prefix_len = CCMP_HDR_LEN,
.extra_postfix_len = CCMP_MIC_LEN,
.owner = THIS_MODULE,
};
static int __init ieee80211_crypto_ccmp_init(void)
{
return ieee80211_register_crypto_ops(&ieee80211_crypt_ccmp);
}
static void __exit ieee80211_crypto_ccmp_exit(void)
{
ieee80211_unregister_crypto_ops(&ieee80211_crypt_ccmp);
}
module_init(ieee80211_crypto_ccmp_init);
module_exit(ieee80211_crypto_ccmp_exit);

708
net/ieee80211/ieee80211_crypt_tkip.c Normal file
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/*
* Host AP crypt: host-based TKIP encryption implementation for Host AP driver
*
* Copyright (c) 2003-2004, Jouni Malinen <jkmaline@cc.hut.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. See README and COPYING for
* more details.
*/
#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/if_ether.h>
#include <linux/if_arp.h>
#include <asm/string.h>
#include <net/ieee80211.h>
#include <linux/crypto.h>
#include <asm/scatterlist.h>
#include <linux/crc32.h>
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("Host AP crypt: TKIP");
MODULE_LICENSE("GPL");
struct ieee80211_tkip_data {
#define TKIP_KEY_LEN 32
u8 key[TKIP_KEY_LEN];
int key_set;
u32 tx_iv32;
u16 tx_iv16;
u16 tx_ttak[5];
int tx_phase1_done;
u32 rx_iv32;
u16 rx_iv16;
u16 rx_ttak[5];
int rx_phase1_done;
u32 rx_iv32_new;
u16 rx_iv16_new;
u32 dot11RSNAStatsTKIPReplays;
u32 dot11RSNAStatsTKIPICVErrors;
u32 dot11RSNAStatsTKIPLocalMICFailures;
int key_idx;
struct crypto_tfm *tfm_arc4;
struct crypto_tfm *tfm_michael;
/* scratch buffers for virt_to_page() (crypto API) */
u8 rx_hdr[16], tx_hdr[16];
};
static void * ieee80211_tkip_init(int key_idx)
{
struct ieee80211_tkip_data *priv;
priv = kmalloc(sizeof(*priv), GFP_ATOMIC);
if (priv == NULL)
goto fail;
memset(priv, 0, sizeof(*priv));
priv->key_idx = key_idx;
priv->tfm_arc4 = crypto_alloc_tfm("arc4", 0);
if (priv->tfm_arc4 == NULL) {
printk(KERN_DEBUG "ieee80211_crypt_tkip: could not allocate "
"crypto API arc4\n");
goto fail;
}
priv->tfm_michael = crypto_alloc_tfm("michael_mic", 0);
if (priv->tfm_michael == NULL) {
printk(KERN_DEBUG "ieee80211_crypt_tkip: could not allocate "
"crypto API michael_mic\n");
goto fail;
}
return priv;
fail:
if (priv) {
if (priv->tfm_michael)
crypto_free_tfm(priv->tfm_michael);
if (priv->tfm_arc4)
crypto_free_tfm(priv->tfm_arc4);
kfree(priv);
}
return NULL;
}
static void ieee80211_tkip_deinit(void *priv)
{
struct ieee80211_tkip_data *_priv = priv;
if (_priv && _priv->tfm_michael)
crypto_free_tfm(_priv->tfm_michael);
if (_priv && _priv->tfm_arc4)
crypto_free_tfm(_priv->tfm_arc4);
kfree(priv);
}
static inline u16 RotR1(u16 val)
{
return (val >> 1) | (val << 15);
}
static inline u8 Lo8(u16 val)
{
return val & 0xff;
}
static inline u8 Hi8(u16 val)
{
return val >> 8;
}
static inline u16 Lo16(u32 val)
{
return val & 0xffff;
}
static inline u16 Hi16(u32 val)
{
return val >> 16;
}
static inline u16 Mk16(u8 hi, u8 lo)
{
return lo | (((u16) hi) << 8);
}
static inline u16 Mk16_le(u16 *v)
{
return le16_to_cpu(*v);
}
static const u16 Sbox[256] =
{
0xC6A5, 0xF884, 0xEE99, 0xF68D, 0xFF0D, 0xD6BD, 0xDEB1, 0x9154,
0x6050, 0x0203, 0xCEA9, 0x567D, 0xE719, 0xB562, 0x4DE6, 0xEC9A,
0x8F45, 0x1F9D, 0x8940, 0xFA87, 0xEF15, 0xB2EB, 0x8EC9, 0xFB0B,
0x41EC, 0xB367, 0x5FFD, 0x45EA, 0x23BF, 0x53F7, 0xE496, 0x9B5B,
0x75C2, 0xE11C, 0x3DAE, 0x4C6A, 0x6C5A, 0x7E41, 0xF502, 0x834F,
0x685C, 0x51F4, 0xD134, 0xF908, 0xE293, 0xAB73, 0x6253, 0x2A3F,
0x080C, 0x9552, 0x4665, 0x9D5E, 0x3028, 0x37A1, 0x0A0F, 0x2FB5,
0x0E09, 0x2436, 0x1B9B, 0xDF3D, 0xCD26, 0x4E69, 0x7FCD, 0xEA9F,
0x121B, 0x1D9E, 0x5874, 0x342E, 0x362D, 0xDCB2, 0xB4EE, 0x5BFB,
0xA4F6, 0x764D, 0xB761, 0x7DCE, 0x527B, 0xDD3E, 0x5E71, 0x1397,
0xA6F5, 0xB968, 0x0000, 0xC12C, 0x4060, 0xE31F, 0x79C8, 0xB6ED,
0xD4BE, 0x8D46, 0x67D9, 0x724B, 0x94DE, 0x98D4, 0xB0E8, 0x854A,
0xBB6B, 0xC52A, 0x4FE5, 0xED16, 0x86C5, 0x9AD7, 0x6655, 0x1194,
0x8ACF, 0xE910, 0x0406, 0xFE81, 0xA0F0, 0x7844, 0x25BA, 0x4BE3,
0xA2F3, 0x5DFE, 0x80C0, 0x058A, 0x3FAD, 0x21BC, 0x7048, 0xF104,
0x63DF, 0x77C1, 0xAF75, 0x4263, 0x2030, 0xE51A, 0xFD0E, 0xBF6D,
0x814C, 0x1814, 0x2635, 0xC32F, 0xBEE1, 0x35A2, 0x88CC, 0x2E39,
0x9357, 0x55F2, 0xFC82, 0x7A47, 0xC8AC, 0xBAE7, 0x322B, 0xE695,
0xC0A0, 0x1998, 0x9ED1, 0xA37F, 0x4466, 0x547E, 0x3BAB, 0x0B83,
0x8CCA, 0xC729, 0x6BD3, 0x283C, 0xA779, 0xBCE2, 0x161D, 0xAD76,
0xDB3B, 0x6456, 0x744E, 0x141E, 0x92DB, 0x0C0A, 0x486C, 0xB8E4,
0x9F5D, 0xBD6E, 0x43EF, 0xC4A6, 0x39A8, 0x31A4, 0xD337, 0xF28B,
0xD532, 0x8B43, 0x6E59, 0xDAB7, 0x018C, 0xB164, 0x9CD2, 0x49E0,
0xD8B4, 0xACFA, 0xF307, 0xCF25, 0xCAAF, 0xF48E, 0x47E9, 0x1018,
0x6FD5, 0xF088, 0x4A6F, 0x5C72, 0x3824, 0x57F1, 0x73C7, 0x9751,
0xCB23, 0xA17C, 0xE89C, 0x3E21, 0x96DD, 0x61DC, 0x0D86, 0x0F85,
0xE090, 0x7C42, 0x71C4, 0xCCAA, 0x90D8, 0x0605, 0xF701, 0x1C12,
0xC2A3, 0x6A5F, 0xAEF9, 0x69D0, 0x1791, 0x9958, 0x3A27, 0x27B9,
0xD938, 0xEB13, 0x2BB3, 0x2233, 0xD2BB, 0xA970, 0x0789, 0x33A7,
0x2DB6, 0x3C22, 0x1592, 0xC920, 0x8749, 0xAAFF, 0x5078, 0xA57A,
0x038F, 0x59F8, 0x0980, 0x1A17, 0x65DA, 0xD731, 0x84C6, 0xD0B8,
0x82C3, 0x29B0, 0x5A77, 0x1E11, 0x7BCB, 0xA8FC, 0x6DD6, 0x2C3A,
};
static inline u16 _S_(u16 v)
{
u16 t = Sbox[Hi8(v)];
return Sbox[Lo8(v)] ^ ((t << 8) | (t >> 8));
}
#define PHASE1_LOOP_COUNT 8
static void tkip_mixing_phase1(u16 *TTAK, const u8 *TK, const u8 *TA, u32 IV32)
{
int i, j;
/* Initialize the 80-bit TTAK from TSC (IV32) and TA[0..5] */
TTAK[0] = Lo16(IV32);
TTAK[1] = Hi16(IV32);
TTAK[2] = Mk16(TA[1], TA[0]);
TTAK[3] = Mk16(TA[3], TA[2]);
TTAK[4] = Mk16(TA[5], TA[4]);
for (i = 0; i < PHASE1_LOOP_COUNT; i++) {
j = 2 * (i & 1);
TTAK[0] += _S_(TTAK[4] ^ Mk16(TK[1 + j], TK[0 + j]));
TTAK[1] += _S_(TTAK[0] ^ Mk16(TK[5 + j], TK[4 + j]));
TTAK[2] += _S_(TTAK[1] ^ Mk16(TK[9 + j], TK[8 + j]));
TTAK[3] += _S_(TTAK[2] ^ Mk16(TK[13 + j], TK[12 + j]));
TTAK[4] += _S_(TTAK[3] ^ Mk16(TK[1 + j], TK[0 + j])) + i;
}
}
static void tkip_mixing_phase2(u8 *WEPSeed, const u8 *TK, const u16 *TTAK,
u16 IV16)
{
/* Make temporary area overlap WEP seed so that the final copy can be
* avoided on little endian hosts. */
u16 *PPK = (u16 *) &WEPSeed[4];
/* Step 1 - make copy of TTAK and bring in TSC */
PPK[0] = TTAK[0];
PPK[1] = TTAK[1];
PPK[2] = TTAK[2];
PPK[3] = TTAK[3];
PPK[4] = TTAK[4];
PPK[5] = TTAK[4] + IV16;
/* Step 2 - 96-bit bijective mixing using S-box */
PPK[0] += _S_(PPK[5] ^ Mk16_le((u16 *) &TK[0]));
PPK[1] += _S_(PPK[0] ^ Mk16_le((u16 *) &TK[2]));
PPK[2] += _S_(PPK[1] ^ Mk16_le((u16 *) &TK[4]));
PPK[3] += _S_(PPK[2] ^ Mk16_le((u16 *) &TK[6]));
PPK[4] += _S_(PPK[3] ^ Mk16_le((u16 *) &TK[8]));
PPK[5] += _S_(PPK[4] ^ Mk16_le((u16 *) &TK[10]));
PPK[0] += RotR1(PPK[5] ^ Mk16_le((u16 *) &TK[12]));
PPK[1] += RotR1(PPK[0] ^ Mk16_le((u16 *) &TK[14]));
PPK[2] += RotR1(PPK[1]);
PPK[3] += RotR1(PPK[2]);
PPK[4] += RotR1(PPK[3]);
PPK[5] += RotR1(PPK[4]);
/* Step 3 - bring in last of TK bits, assign 24-bit WEP IV value
* WEPSeed[0..2] is transmitted as WEP IV */
WEPSeed[0] = Hi8(IV16);
WEPSeed[1] = (Hi8(IV16) | 0x20) & 0x7F;
WEPSeed[2] = Lo8(IV16);
WEPSeed[3] = Lo8((PPK[5] ^ Mk16_le((u16 *) &TK[0])) >> 1);
#ifdef __BIG_ENDIAN
{
int i;
for (i = 0; i < 6; i++)
PPK[i] = (PPK[i] << 8) | (PPK[i] >> 8);
}
#endif
}
static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct ieee80211_tkip_data *tkey = priv;
int len;
u8 rc4key[16], *pos, *icv;
struct ieee80211_hdr *hdr;
u32 crc;
struct scatterlist sg;
if (skb_headroom(skb) < 8 || skb_tailroom(skb) < 4 ||
skb->len < hdr_len)
return -1;
hdr = (struct ieee80211_hdr *) skb->data;
if (!tkey->tx_phase1_done) {
tkip_mixing_phase1(tkey->tx_ttak, tkey->key, hdr->addr2,
tkey->tx_iv32);
tkey->tx_phase1_done = 1;
}
tkip_mixing_phase2(rc4key, tkey->key, tkey->tx_ttak, tkey->tx_iv16);
len = skb->len - hdr_len;
pos = skb_push(skb, 8);
memmove(pos, pos + 8, hdr_len);
pos += hdr_len;
icv = skb_put(skb, 4);
*pos++ = rc4key[0];
*pos++ = rc4key[1];
*pos++ = rc4key[2];
*pos++ = (tkey->key_idx << 6) | (1 << 5) /* Ext IV included */;
*pos++ = tkey->tx_iv32 & 0xff;
*pos++ = (tkey->tx_iv32 >> 8) & 0xff;
*pos++ = (tkey->tx_iv32 >> 16) & 0xff;
*pos++ = (tkey->tx_iv32 >> 24) & 0xff;
crc = ~crc32_le(~0, pos, len);
icv[0] = crc;
icv[1] = crc >> 8;
icv[2] = crc >> 16;
icv[3] = crc >> 24;
crypto_cipher_setkey(tkey->tfm_arc4, rc4key, 16);
sg.page = virt_to_page(pos);
sg.offset = offset_in_page(pos);
sg.length = len + 4;
crypto_cipher_encrypt(tkey->tfm_arc4, &sg, &sg, len + 4);
tkey->tx_iv16++;
if (tkey->tx_iv16 == 0) {
tkey->tx_phase1_done = 0;
tkey->tx_iv32++;
}
return 0;
}
static int ieee80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct ieee80211_tkip_data *tkey = priv;
u8 rc4key[16];
u8 keyidx, *pos;
u32 iv32;
u16 iv16;
struct ieee80211_hdr *hdr;
u8 icv[4];
u32 crc;
struct scatterlist sg;
int plen;
if (skb->len < hdr_len + 8 + 4)
return -1;
hdr = (struct ieee80211_hdr *) skb->data;
pos = skb->data + hdr_len;
keyidx = pos[3];
if (!(keyidx & (1 << 5))) {
if (net_ratelimit()) {
printk(KERN_DEBUG "TKIP: received packet without ExtIV"
" flag from " MAC_FMT "\n", MAC_ARG(hdr->addr2));
}
return -2;
}
keyidx >>= 6;
if (tkey->key_idx != keyidx) {
printk(KERN_DEBUG "TKIP: RX tkey->key_idx=%d frame "
"keyidx=%d priv=%p\n", tkey->key_idx, keyidx, priv);
return -6;
}
if (!tkey->key_set) {
if (net_ratelimit()) {
printk(KERN_DEBUG "TKIP: received packet from " MAC_FMT
" with keyid=%d that does not have a configured"
" key\n", MAC_ARG(hdr->addr2), keyidx);
}
return -3;
}
iv16 = (pos[0] << 8) | pos[2];
iv32 = pos[4] | (pos[5] << 8) | (pos[6] << 16) | (pos[7] << 24);
pos += 8;
if (iv32 < tkey->rx_iv32 ||
(iv32 == tkey->rx_iv32 && iv16 <= tkey->rx_iv16)) {
if (net_ratelimit()) {
printk(KERN_DEBUG "TKIP: replay detected: STA=" MAC_FMT
" previous TSC %08x%04x received TSC "
"%08x%04x\n", MAC_ARG(hdr->addr2),
tkey->rx_iv32, tkey->rx_iv16, iv32, iv16);
}
tkey->dot11RSNAStatsTKIPReplays++;
return -4;
}
if (iv32 != tkey->rx_iv32 || !tkey->rx_phase1_done) {
tkip_mixing_phase1(tkey->rx_ttak, tkey->key, hdr->addr2, iv32);
tkey->rx_phase1_done = 1;
}
tkip_mixing_phase2(rc4key, tkey->key, tkey->rx_ttak, iv16);
plen = skb->len - hdr_len - 12;
crypto_cipher_setkey(tkey->tfm_arc4, rc4key, 16);
sg.page = virt_to_page(pos);
sg.offset = offset_in_page(pos);
sg.length = plen + 4;
crypto_cipher_decrypt(tkey->tfm_arc4, &sg, &sg, plen + 4);
crc = ~crc32_le(~0, pos, plen);
icv[0] = crc;
icv[1] = crc >> 8;
icv[2] = crc >> 16;
icv[3] = crc >> 24;
if (memcmp(icv, pos + plen, 4) != 0) {
if (iv32 != tkey->rx_iv32) {
/* Previously cached Phase1 result was already lost, so
* it needs to be recalculated for the next packet. */
tkey->rx_phase1_done = 0;
}
if (net_ratelimit()) {
printk(KERN_DEBUG "TKIP: ICV error detected: STA="
MAC_FMT "\n", MAC_ARG(hdr->addr2));
}
tkey->dot11RSNAStatsTKIPICVErrors++;
return -5;
}
/* Update real counters only after Michael MIC verification has
* completed */
tkey->rx_iv32_new = iv32;
tkey->rx_iv16_new = iv16;
/* Remove IV and ICV */
memmove(skb->data + 8, skb->data, hdr_len);
skb_pull(skb, 8);
skb_trim(skb, skb->len - 4);
return keyidx;
}
static int michael_mic(struct ieee80211_tkip_data *tkey, u8 *key, u8 *hdr,
u8 *data, size_t data_len, u8 *mic)
{
struct scatterlist sg[2];
if (tkey->tfm_michael == NULL) {
printk(KERN_WARNING "michael_mic: tfm_michael == NULL\n");
return -1;
}
sg[0].page = virt_to_page(hdr);
sg[0].offset = offset_in_page(hdr);
sg[0].length = 16;
sg[1].page = virt_to_page(data);
sg[1].offset = offset_in_page(data);
sg[1].length = data_len;
crypto_digest_init(tkey->tfm_michael);
crypto_digest_setkey(tkey->tfm_michael, key, 8);
crypto_digest_update(tkey->tfm_michael, sg, 2);
crypto_digest_final(tkey->tfm_michael, mic);
return 0;
}
static void michael_mic_hdr(struct sk_buff *skb, u8 *hdr)
{
struct ieee80211_hdr *hdr11;
hdr11 = (struct ieee80211_hdr *) skb->data;
switch (le16_to_cpu(hdr11->frame_ctl) &
(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
case IEEE80211_FCTL_TODS:
memcpy(hdr, hdr11->addr3, ETH_ALEN); /* DA */
memcpy(hdr + ETH_ALEN, hdr11->addr2, ETH_ALEN); /* SA */
break;
case IEEE80211_FCTL_FROMDS:
memcpy(hdr, hdr11->addr1, ETH_ALEN); /* DA */
memcpy(hdr + ETH_ALEN, hdr11->addr3, ETH_ALEN); /* SA */
break;
case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
memcpy(hdr, hdr11->addr3, ETH_ALEN); /* DA */
memcpy(hdr + ETH_ALEN, hdr11->addr4, ETH_ALEN); /* SA */
break;
case 0:
memcpy(hdr, hdr11->addr1, ETH_ALEN); /* DA */
memcpy(hdr + ETH_ALEN, hdr11->addr2, ETH_ALEN); /* SA */
break;
}
hdr[12] = 0; /* priority */
hdr[13] = hdr[14] = hdr[15] = 0; /* reserved */
}
static int ieee80211_michael_mic_add(struct sk_buff *skb, int hdr_len, void *priv)
{
struct ieee80211_tkip_data *tkey = priv;
u8 *pos;
if (skb_tailroom(skb) < 8 || skb->len < hdr_len) {
printk(KERN_DEBUG "Invalid packet for Michael MIC add "
"(tailroom=%d hdr_len=%d skb->len=%d)\n",
skb_tailroom(skb), hdr_len, skb->len);
return -1;
}
michael_mic_hdr(skb, tkey->tx_hdr);
pos = skb_put(skb, 8);
if (michael_mic(tkey, &tkey->key[16], tkey->tx_hdr,
skb->data + hdr_len, skb->len - 8 - hdr_len, pos))
return -1;
return 0;
}
#if WIRELESS_EXT >= 18
static void ieee80211_michael_mic_failure(struct net_device *dev,
struct ieee80211_hdr *hdr,
int keyidx)
{
union iwreq_data wrqu;
struct iw_michaelmicfailure ev;
/* TODO: needed parameters: count, keyid, key type, TSC */
memset(&ev, 0, sizeof(ev));
ev.flags = keyidx & IW_MICFAILURE_KEY_ID;
if (hdr->addr1[0] & 0x01)
ev.flags |= IW_MICFAILURE_GROUP;
else
ev.flags |= IW_MICFAILURE_PAIRWISE;
ev.src_addr.sa_family = ARPHRD_ETHER;
memcpy(ev.src_addr.sa_data, hdr->addr2, ETH_ALEN);
memset(&wrqu, 0, sizeof(wrqu));
wrqu.data.length = sizeof(ev);
wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu, (char *) &ev);
}
#elif WIRELESS_EXT >= 15
static void ieee80211_michael_mic_failure(struct net_device *dev,
struct ieee80211_hdr *hdr,
int keyidx)
{
union iwreq_data wrqu;
char buf[128];
/* TODO: needed parameters: count, keyid, key type, TSC */
sprintf(buf, "MLME-MICHAELMICFAILURE.indication(keyid=%d %scast addr="
MAC_FMT ")", keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
MAC_ARG(hdr->addr2));
memset(&wrqu, 0, sizeof(wrqu));
wrqu.data.length = strlen(buf);
wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
}
#else /* WIRELESS_EXT >= 15 */
static inline void ieee80211_michael_mic_failure(struct net_device *dev,
struct ieee80211_hdr *hdr,
int keyidx)
{
}
#endif /* WIRELESS_EXT >= 15 */
static int ieee80211_michael_mic_verify(struct sk_buff *skb, int keyidx,
int hdr_len, void *priv)
{
struct ieee80211_tkip_data *tkey = priv;
u8 mic[8];
if (!tkey->key_set)
return -1;
michael_mic_hdr(skb, tkey->rx_hdr);
if (michael_mic(tkey, &tkey->key[24], tkey->rx_hdr,
skb->data + hdr_len, skb->len - 8 - hdr_len, mic))
return -1;
if (memcmp(mic, skb->data + skb->len - 8, 8) != 0) {
struct ieee80211_hdr *hdr;
hdr = (struct ieee80211_hdr *) skb->data;
printk(KERN_DEBUG "%s: Michael MIC verification failed for "
"MSDU from " MAC_FMT " keyidx=%d\n",
skb->dev ? skb->dev->name : "N/A", MAC_ARG(hdr->addr2),
keyidx);
if (skb->dev)
ieee80211_michael_mic_failure(skb->dev, hdr, keyidx);
tkey->dot11RSNAStatsTKIPLocalMICFailures++;
return -1;
}
/* Update TSC counters for RX now that the packet verification has
* completed. */
tkey->rx_iv32 = tkey->rx_iv32_new;
tkey->rx_iv16 = tkey->rx_iv16_new;
skb_trim(skb, skb->len - 8);
return 0;
}
static int ieee80211_tkip_set_key(void *key, int len, u8 *seq, void *priv)
{
struct ieee80211_tkip_data *tkey = priv;
int keyidx;
struct crypto_tfm *tfm = tkey->tfm_michael;
struct crypto_tfm *tfm2 = tkey->tfm_arc4;
keyidx = tkey->key_idx;
memset(tkey, 0, sizeof(*tkey));
tkey->key_idx = keyidx;
tkey->tfm_michael = tfm;
tkey->tfm_arc4 = tfm2;
if (len == TKIP_KEY_LEN) {
memcpy(tkey->key, key, TKIP_KEY_LEN);
tkey->key_set = 1;
tkey->tx_iv16 = 1; /* TSC is initialized to 1 */
if (seq) {
tkey->rx_iv32 = (seq[5] << 24) | (seq[4] << 16) |
(seq[3] << 8) | seq[2];
tkey->rx_iv16 = (seq[1] << 8) | seq[0];
}
} else if (len == 0)
tkey->key_set = 0;
else
return -1;
return 0;
}
static int ieee80211_tkip_get_key(void *key, int len, u8 *seq, void *priv)
{
struct ieee80211_tkip_data *tkey = priv;
if (len < TKIP_KEY_LEN)
return -1;
if (!tkey->key_set)
return 0;
memcpy(key, tkey->key, TKIP_KEY_LEN);
if (seq) {
/* Return the sequence number of the last transmitted frame. */
u16 iv16 = tkey->tx_iv16;
u32 iv32 = tkey->tx_iv32;
if (iv16 == 0)
iv32--;
iv16--;
seq[0] = tkey->tx_iv16;
seq[1] = tkey->tx_iv16 >> 8;
seq[2] = tkey->tx_iv32;
seq[3] = tkey->tx_iv32 >> 8;
seq[4] = tkey->tx_iv32 >> 16;
seq[5] = tkey->tx_iv32 >> 24;
}
return TKIP_KEY_LEN;
}
static char * ieee80211_tkip_print_stats(char *p, void *priv)
{
struct ieee80211_tkip_data *tkip = priv;
p += sprintf(p, "key[%d] alg=TKIP key_set=%d "
"tx_pn=%02x%02x%02x%02x%02x%02x "
"rx_pn=%02x%02x%02x%02x%02x%02x "
"replays=%d icv_errors=%d local_mic_failures=%d\n",
tkip->key_idx, tkip->key_set,
(tkip->tx_iv32 >> 24) & 0xff,
(tkip->tx_iv32 >> 16) & 0xff,
(tkip->tx_iv32 >> 8) & 0xff,
tkip->tx_iv32 & 0xff,
(tkip->tx_iv16 >> 8) & 0xff,
tkip->tx_iv16 & 0xff,
(tkip->rx_iv32 >> 24) & 0xff,
(tkip->rx_iv32 >> 16) & 0xff,
(tkip->rx_iv32 >> 8) & 0xff,
tkip->rx_iv32 & 0xff,
(tkip->rx_iv16 >> 8) & 0xff,
tkip->rx_iv16 & 0xff,
tkip->dot11RSNAStatsTKIPReplays,
tkip->dot11RSNAStatsTKIPICVErrors,
tkip->dot11RSNAStatsTKIPLocalMICFailures);
return p;
}
static struct ieee80211_crypto_ops ieee80211_crypt_tkip = {
.name = "TKIP",
.init = ieee80211_tkip_init,
.deinit = ieee80211_tkip_deinit,
.encrypt_mpdu = ieee80211_tkip_encrypt,
.decrypt_mpdu = ieee80211_tkip_decrypt,
.encrypt_msdu = ieee80211_michael_mic_add,
.decrypt_msdu = ieee80211_michael_mic_verify,
.set_key = ieee80211_tkip_set_key,
.get_key = ieee80211_tkip_get_key,
.print_stats = ieee80211_tkip_print_stats,
.extra_prefix_len = 4 + 4, /* IV + ExtIV */
.extra_postfix_len = 8 + 4, /* MIC + ICV */
.owner = THIS_MODULE,
};
static int __init ieee80211_crypto_tkip_init(void)
{
return ieee80211_register_crypto_ops(&ieee80211_crypt_tkip);
}
static void __exit ieee80211_crypto_tkip_exit(void)
{
ieee80211_unregister_crypto_ops(&ieee80211_crypt_tkip);
}
module_init(ieee80211_crypto_tkip_init);
module_exit(ieee80211_crypto_tkip_exit);

272
net/ieee80211/ieee80211_crypt_wep.c Normal file
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@ -0,0 +1,272 @@
/*
* Host AP crypt: host-based WEP encryption implementation for Host AP driver
*
* Copyright (c) 2002-2004, Jouni Malinen <jkmaline@cc.hut.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. See README and COPYING for
* more details.
*/
#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/skbuff.h>
#include <asm/string.h>
#include <net/ieee80211.h>
#include <linux/crypto.h>
#include <asm/scatterlist.h>
#include <linux/crc32.h>
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("Host AP crypt: WEP");
MODULE_LICENSE("GPL");
struct prism2_wep_data {
u32 iv;
#define WEP_KEY_LEN 13
u8 key[WEP_KEY_LEN + 1];
u8 key_len;
u8 key_idx;
struct crypto_tfm *tfm;
};
static void * prism2_wep_init(int keyidx)
{
struct prism2_wep_data *priv;
priv = kmalloc(sizeof(*priv), GFP_ATOMIC);
if (priv == NULL)
goto fail;
memset(priv, 0, sizeof(*priv));
priv->key_idx = keyidx;
priv->tfm = crypto_alloc_tfm("arc4", 0);
if (priv->tfm == NULL) {
printk(KERN_DEBUG "ieee80211_crypt_wep: could not allocate "
"crypto API arc4\n");
goto fail;
}
/* start WEP IV from a random value */
get_random_bytes(&priv->iv, 4);
return priv;
fail:
if (priv) {
if (priv->tfm)
crypto_free_tfm(priv->tfm);
kfree(priv);
}
return NULL;
}
static void prism2_wep_deinit(void *priv)
{
struct prism2_wep_data *_priv = priv;
if (_priv && _priv->tfm)
crypto_free_tfm(_priv->tfm);
kfree(priv);
}
/* Perform WEP encryption on given skb that has at least 4 bytes of headroom
* for IV and 4 bytes of tailroom for ICV. Both IV and ICV will be transmitted,
* so the payload length increases with 8 bytes.
*
* WEP frame payload: IV + TX key idx, RC4(data), ICV = RC4(CRC32(data))
*/
static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct prism2_wep_data *wep = priv;
u32 crc, klen, len;
u8 key[WEP_KEY_LEN + 3];
u8 *pos, *icv;
struct scatterlist sg;
if (skb_headroom(skb) < 4 || skb_tailroom(skb) < 4 ||
skb->len < hdr_len)
return -1;
len = skb->len - hdr_len;
pos = skb_push(skb, 4);
memmove(pos, pos + 4, hdr_len);
pos += hdr_len;
klen = 3 + wep->key_len;
wep->iv++;
/* Fluhrer, Mantin, and Shamir have reported weaknesses in the key
* scheduling algorithm of RC4. At least IVs (KeyByte + 3, 0xff, N)
* can be used to speedup attacks, so avoid using them. */
if ((wep->iv & 0xff00) == 0xff00) {
u8 B = (wep->iv >> 16) & 0xff;
if (B >= 3 && B < klen)
wep->iv += 0x0100;
}
/* Prepend 24-bit IV to RC4 key and TX frame */
*pos++ = key[0] = (wep->iv >> 16) & 0xff;
*pos++ = key[1] = (wep->iv >> 8) & 0xff;
*pos++ = key[2] = wep->iv & 0xff;
*pos++ = wep->key_idx << 6;
/* Copy rest of the WEP key (the secret part) */
memcpy(key + 3, wep->key, wep->key_len);
/* Append little-endian CRC32 and encrypt it to produce ICV */
crc = ~crc32_le(~0, pos, len);
icv = skb_put(skb, 4);
icv[0] = crc;
icv[1] = crc >> 8;
icv[2] = crc >> 16;
icv[3] = crc >> 24;
crypto_cipher_setkey(wep->tfm, key, klen);
sg.page = virt_to_page(pos);
sg.offset = offset_in_page(pos);
sg.length = len + 4;
crypto_cipher_encrypt(wep->tfm, &sg, &sg, len + 4);
return 0;
}
/* Perform WEP decryption on given buffer. Buffer includes whole WEP part of
* the frame: IV (4 bytes), encrypted payload (including SNAP header),
* ICV (4 bytes). len includes both IV and ICV.
*
* Returns 0 if frame was decrypted successfully and ICV was correct and -1 on
* failure. If frame is OK, IV and ICV will be removed.
*/
static int prism2_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct prism2_wep_data *wep = priv;
u32 crc, klen, plen;
u8 key[WEP_KEY_LEN + 3];
u8 keyidx, *pos, icv[4];
struct scatterlist sg;
if (skb->len < hdr_len + 8)
return -1;
pos = skb->data + hdr_len;
key[0] = *pos++;
key[1] = *pos++;
key[2] = *pos++;
keyidx = *pos++ >> 6;
if (keyidx != wep->key_idx)
return -1;
klen = 3 + wep->key_len;
/* Copy rest of the WEP key (the secret part) */
memcpy(key + 3, wep->key, wep->key_len);
/* Apply RC4 to data and compute CRC32 over decrypted data */
plen = skb->len - hdr_len - 8;
crypto_cipher_setkey(wep->tfm, key, klen);
sg.page = virt_to_page(pos);
sg.offset = offset_in_page(pos);
sg.length = plen + 4;
crypto_cipher_decrypt(wep->tfm, &sg, &sg, plen + 4);
crc = ~crc32_le(~0, pos, plen);
icv[0] = crc;
icv[1] = crc >> 8;
icv[2] = crc >> 16;
icv[3] = crc >> 24;
if (memcmp(icv, pos + plen, 4) != 0) {
/* ICV mismatch - drop frame */
return -2;
}
/* Remove IV and ICV */
memmove(skb->data + 4, skb->data, hdr_len);
skb_pull(skb, 4);
skb_trim(skb, skb->len - 4);
return 0;
}
static int prism2_wep_set_key(void *key, int len, u8 *seq, void *priv)
{
struct prism2_wep_data *wep = priv;
if (len < 0 || len > WEP_KEY_LEN)
return -1;
memcpy(wep->key, key, len);
wep->key_len = len;
return 0;
}
static int prism2_wep_get_key(void *key, int len, u8 *seq, void *priv)
{
struct prism2_wep_data *wep = priv;
if (len < wep->key_len)
return -1;
memcpy(key, wep->key, wep->key_len);
return wep->key_len;
}
static char * prism2_wep_print_stats(char *p, void *priv)
{
struct prism2_wep_data *wep = priv;
p += sprintf(p, "key[%d] alg=WEP len=%d\n",
wep->key_idx, wep->key_len);
return p;
}
static struct ieee80211_crypto_ops ieee80211_crypt_wep = {
.name = "WEP",
.init = prism2_wep_init,
.deinit = prism2_wep_deinit,
.encrypt_mpdu = prism2_wep_encrypt,
.decrypt_mpdu = prism2_wep_decrypt,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = prism2_wep_set_key,
.get_key = prism2_wep_get_key,
.print_stats = prism2_wep_print_stats,
.extra_prefix_len = 4, /* IV */
.extra_postfix_len = 4, /* ICV */
.owner = THIS_MODULE,
};
static int __init ieee80211_crypto_wep_init(void)
{
return ieee80211_register_crypto_ops(&ieee80211_crypt_wep);
}
static void __exit ieee80211_crypto_wep_exit(void)
{
ieee80211_unregister_crypto_ops(&ieee80211_crypt_wep);
}
module_init(ieee80211_crypto_wep_init);
module_exit(ieee80211_crypto_wep_exit);

268
net/ieee80211/ieee80211_module.c Normal file
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/*******************************************************************************
Copyright(c) 2004 Intel Corporation. All rights reserved.
Portions of this file are based on the WEP enablement code provided by the
Host AP project hostap-drivers v0.1.3
Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
<jkmaline@cc.hut.fi>
Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
This program is free software; you can redistribute it and/or modify it
under the terms of version 2 of the GNU General Public License as
published by the Free Software Foundation.
This program 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 General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59
Temple Place - Suite 330, Boston, MA 02111-1307, USA.
The full GNU General Public License is included in this distribution in the
file called LICENSE.
Contact Information:
James P. Ketrenos <ipw2100-admin@linux.intel.com>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*******************************************************************************/
#include <linux/compiler.h>
#include <linux/config.h>
#include <linux/errno.h>
#include <linux/if_arp.h>
#include <linux/in6.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/pci.h>
#include <linux/proc_fs.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <linux/tcp.h>
#include <linux/types.h>
#include <linux/version.h>
#include <linux/wireless.h>
#include <linux/etherdevice.h>
#include <asm/uaccess.h>
#include <net/arp.h>
#include <net/ieee80211.h>
MODULE_DESCRIPTION("802.11 data/management/control stack");
MODULE_AUTHOR("Copyright (C) 2004 Intel Corporation <jketreno@linux.intel.com>");
MODULE_LICENSE("GPL");
#define DRV_NAME "ieee80211"
static inline int ieee80211_networks_allocate(struct ieee80211_device *ieee)
{
if (ieee->networks)
return 0;
ieee->networks = kmalloc(
MAX_NETWORK_COUNT * sizeof(struct ieee80211_network),
GFP_KERNEL);
if (!ieee->networks) {
printk(KERN_WARNING "%s: Out of memory allocating beacons\n",
ieee->dev->name);
return -ENOMEM;
}
memset(ieee->networks, 0,
MAX_NETWORK_COUNT * sizeof(struct ieee80211_network));
return 0;
}
static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
{
if (!ieee->networks)
return;
kfree(ieee->networks);
ieee->networks = NULL;
}
static inline void ieee80211_networks_initialize(struct ieee80211_device *ieee)
{
int i;
INIT_LIST_HEAD(&ieee->network_free_list);
INIT_LIST_HEAD(&ieee->network_list);
for (i = 0; i < MAX_NETWORK_COUNT; i++)
list_add_tail(&ieee->networks[i].list, &ieee->network_free_list);
}
struct net_device *alloc_ieee80211(int sizeof_priv)
{
struct ieee80211_device *ieee;
struct net_device *dev;
int err;
IEEE80211_DEBUG_INFO("Initializing...\n");
dev = alloc_etherdev(sizeof(struct ieee80211_device) + sizeof_priv);
if (!dev) {
IEEE80211_ERROR("Unable to network device.\n");
goto failed;
}
ieee = netdev_priv(dev);
dev->hard_start_xmit = ieee80211_xmit;
ieee->dev = dev;
err = ieee80211_networks_allocate(ieee);
if (err) {
IEEE80211_ERROR("Unable to allocate beacon storage: %d\n",
err);
goto failed;
}
ieee80211_networks_initialize(ieee);
/* Default fragmentation threshold is maximum payload size */
ieee->fts = DEFAULT_FTS;
ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
ieee->open_wep = 1;
/* Default to enabling full open WEP with host based encrypt/decrypt */
ieee->host_encrypt = 1;
ieee->host_decrypt = 1;
ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
INIT_LIST_HEAD(&ieee->crypt_deinit_list);
init_timer(&ieee->crypt_deinit_timer);
ieee->crypt_deinit_timer.data = (unsigned long)ieee;
ieee->crypt_deinit_timer.function = ieee80211_crypt_deinit_handler;
spin_lock_init(&ieee->lock);
ieee->wpa_enabled = 0;
ieee->tkip_countermeasures = 0;
ieee->drop_unencrypted = 0;
ieee->privacy_invoked = 0;
ieee->ieee802_1x = 1;
return dev;
failed:
if (dev)
free_netdev(dev);
return NULL;
}
void free_ieee80211(struct net_device *dev)
{
struct ieee80211_device *ieee = netdev_priv(dev);
int i;
del_timer_sync(&ieee->crypt_deinit_timer);
ieee80211_crypt_deinit_entries(ieee, 1);
for (i = 0; i < WEP_KEYS; i++) {
struct ieee80211_crypt_data *crypt = ieee->crypt[i];
if (crypt) {
if (crypt->ops) {
crypt->ops->deinit(crypt->priv);
module_put(crypt->ops->owner);
}
kfree(crypt);
ieee->crypt[i] = NULL;
}
}
ieee80211_networks_free(ieee);
free_netdev(dev);
}
#ifdef CONFIG_IEEE80211_DEBUG
static int debug = 0;
u32 ieee80211_debug_level = 0;
struct proc_dir_entry *ieee80211_proc = NULL;
static int show_debug_level(char *page, char **start, off_t offset,
int count, int *eof, void *data)
{
return snprintf(page, count, "0x%08X\n", ieee80211_debug_level);
}
static int store_debug_level(struct file *file, const char *buffer,
unsigned long count, void *data)
{
char buf[] = "0x00000000";
unsigned long len = min(sizeof(buf) - 1, (u32)count);
char *p = (char *)buf;
unsigned long val;
if (copy_from_user(buf, buffer, len))
return count;
buf[len] = 0;
if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
p++;
if (p[0] == 'x' || p[0] == 'X')
p++;
val = simple_strtoul(p, &p, 16);
} else
val = simple_strtoul(p, &p, 10);
if (p == buf)
printk(KERN_INFO DRV_NAME
": %s is not in hex or decimal form.\n", buf);
else
ieee80211_debug_level = val;
return strnlen(buf, count);
}
static int __init ieee80211_init(void)
{
struct proc_dir_entry *e;
ieee80211_debug_level = debug;
ieee80211_proc = create_proc_entry(DRV_NAME, S_IFDIR, proc_net);
if (ieee80211_proc == NULL) {
IEEE80211_ERROR("Unable to create " DRV_NAME
" proc directory\n");
return -EIO;
}
e = create_proc_entry("debug_level", S_IFREG | S_IRUGO | S_IWUSR,
ieee80211_proc);
if (!e) {
remove_proc_entry(DRV_NAME, proc_net);
ieee80211_proc = NULL;
return -EIO;
}
e->read_proc = show_debug_level;
e->write_proc = store_debug_level;
e->data = NULL;
return 0;
}
static void __exit ieee80211_exit(void)
{
if (ieee80211_proc) {
remove_proc_entry("debug_level", ieee80211_proc);
remove_proc_entry(DRV_NAME, proc_net);
ieee80211_proc = NULL;
}
}
#include <linux/moduleparam.h>
module_param(debug, int, 0444);
MODULE_PARM_DESC(debug, "debug output mask");
module_exit(ieee80211_exit);
module_init(ieee80211_init);
#endif
EXPORT_SYMBOL(alloc_ieee80211);
EXPORT_SYMBOL(free_ieee80211);

1206
net/ieee80211/ieee80211_rx.c Normal file
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448
net/ieee80211/ieee80211_tx.c Normal file
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@ -0,0 +1,448 @@
/******************************************************************************
Copyright(c) 2003 - 2004 Intel Corporation. All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the terms of version 2 of the GNU General Public License as
published by the Free Software Foundation.
This program 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 General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59
Temple Place - Suite 330, Boston, MA 02111-1307, USA.
The full GNU General Public License is included in this distribution in the
file called LICENSE.
Contact Information:
James P. Ketrenos <ipw2100-admin@linux.intel.com>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
******************************************************************************/
#include <linux/compiler.h>
#include <linux/config.h>
#include <linux/errno.h>
#include <linux/if_arp.h>
#include <linux/in6.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/pci.h>
#include <linux/proc_fs.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <linux/tcp.h>
#include <linux/types.h>
#include <linux/version.h>
#include <linux/wireless.h>
#include <linux/etherdevice.h>
#include <asm/uaccess.h>
#include <net/ieee80211.h>
/*
802.11 Data Frame
,-------------------------------------------------------------------.
Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
|------|------|---------|---------|---------|------|---------|------|
Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | Frame | fcs |
| | tion | (BSSID) | | | ence | data | |
`--------------------------------------------------| |------'
Total: 28 non-data bytes `----.----'
|
.- 'Frame data' expands to <---------------------------'
|
V
,---------------------------------------------------.
Bytes | 1 | 1 | 1 | 3 | 2 | 0-2304 |
|------|------|---------|----------|------|---------|
Desc. | SNAP | SNAP | Control |Eth Tunnel| Type | IP |
| DSAP | SSAP | | | | Packet |
| 0xAA | 0xAA |0x03 (UI)|0x00-00-F8| | |
`-----------------------------------------| |
Total: 8 non-data bytes `----.----'
|
.- 'IP Packet' expands, if WEP enabled, to <--'
|
V
,-----------------------.
Bytes | 4 | 0-2296 | 4 |
|-----|-----------|-----|
Desc. | IV | Encrypted | ICV |
| | IP Packet | |
`-----------------------'
Total: 8 non-data bytes
802.3 Ethernet Data Frame
,-----------------------------------------.
Bytes | 6 | 6 | 2 | Variable | 4 |
|-------|-------|------|-----------|------|
Desc. | Dest. | Source| Type | IP Packet | fcs |
| MAC | MAC | | | |
`-----------------------------------------'
Total: 18 non-data bytes
In the event that fragmentation is required, the incoming payload is split into
N parts of size ieee->fts. The first fragment contains the SNAP header and the
remaining packets are just data.
If encryption is enabled, each fragment payload size is reduced by enough space
to add the prefix and postfix (IV and ICV totalling 8 bytes in the case of WEP)
So if you have 1500 bytes of payload with ieee->fts set to 500 without
encryption it will take 3 frames. With WEP it will take 4 frames as the
payload of each frame is reduced to 492 bytes.
* SKB visualization
*
* ,- skb->data
* |
* | ETHERNET HEADER ,-<-- PAYLOAD
* | | 14 bytes from skb->data
* | 2 bytes for Type --> ,T. | (sizeof ethhdr)
* | | | |
* |,-Dest.--. ,--Src.---. | | |
* | 6 bytes| | 6 bytes | | | |
* v | | | | | |
* 0 | v 1 | v | v 2
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
* ^ | ^ | ^ |
* | | | | | |
* | | | | `T' <---- 2 bytes for Type
* | | | |
* | | '---SNAP--' <-------- 6 bytes for SNAP
* | |
* `-IV--' <-------------------- 4 bytes for IV (WEP)
*
* SNAP HEADER
*
*/
static u8 P802_1H_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0xf8 };
static u8 RFC1042_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0x00 };
static inline int ieee80211_put_snap(u8 *data, u16 h_proto)
{
struct ieee80211_snap_hdr *snap;
u8 *oui;
snap = (struct ieee80211_snap_hdr *)data;
snap->dsap = 0xaa;
snap->ssap = 0xaa;
snap->ctrl = 0x03;
if (h_proto == 0x8137 || h_proto == 0x80f3)
oui = P802_1H_OUI;
else
oui = RFC1042_OUI;
snap->oui[0] = oui[0];
snap->oui[1] = oui[1];
snap->oui[2] = oui[2];
*(u16 *)(data + SNAP_SIZE) = htons(h_proto);
return SNAP_SIZE + sizeof(u16);
}
static inline int ieee80211_encrypt_fragment(
struct ieee80211_device *ieee,
struct sk_buff *frag,
int hdr_len)
{
struct ieee80211_crypt_data* crypt = ieee->crypt[ieee->tx_keyidx];
int res;
#ifdef CONFIG_IEEE80211_CRYPT_TKIP
struct ieee80211_hdr *header;
if (ieee->tkip_countermeasures &&
crypt && crypt->ops && strcmp(crypt->ops->name, "TKIP") == 0) {
header = (struct ieee80211_hdr *) frag->data;
if (net_ratelimit()) {
printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
"TX packet to " MAC_FMT "\n",
ieee->dev->name, MAC_ARG(header->addr1));
}
return -1;
}
#endif
/* To encrypt, frame format is:
* IV (4 bytes), clear payload (including SNAP), ICV (4 bytes) */
// PR: FIXME: Copied from hostap. Check fragmentation/MSDU/MPDU encryption.
/* Host-based IEEE 802.11 fragmentation for TX is not yet supported, so
* call both MSDU and MPDU encryption functions from here. */
atomic_inc(&crypt->refcnt);
res = 0;
if (crypt->ops->encrypt_msdu)
res = crypt->ops->encrypt_msdu(frag, hdr_len, crypt->priv);
if (res == 0 && crypt->ops->encrypt_mpdu)
res = crypt->ops->encrypt_mpdu(frag, hdr_len, crypt->priv);
atomic_dec(&crypt->refcnt);
if (res < 0) {
printk(KERN_INFO "%s: Encryption failed: len=%d.\n",
ieee->dev->name, frag->len);
ieee->ieee_stats.tx_discards++;
return -1;
}
return 0;
}
void ieee80211_txb_free(struct ieee80211_txb *txb) {
int i;
if (unlikely(!txb))
return;
for (i = 0; i < txb->nr_frags; i++)
if (txb->fragments[i])
dev_kfree_skb_any(txb->fragments[i]);
kfree(txb);
}
struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int txb_size,
int gfp_mask)
{
struct ieee80211_txb *txb;
int i;
txb = kmalloc(
sizeof(struct ieee80211_txb) + (sizeof(u8*) * nr_frags),
gfp_mask);
if (!txb)
return NULL;
memset(txb, 0, sizeof(struct ieee80211_txb));
txb->nr_frags = nr_frags;
txb->frag_size = txb_size;
for (i = 0; i < nr_frags; i++) {
txb->fragments[i] = dev_alloc_skb(txb_size);
if (unlikely(!txb->fragments[i])) {
i--;
break;
}
}
if (unlikely(i != nr_frags)) {
while (i >= 0)
dev_kfree_skb_any(txb->fragments[i--]);
kfree(txb);
return NULL;
}
return txb;
}
/* SKBs are added to the ieee->tx_queue. */
int ieee80211_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct ieee80211_device *ieee = netdev_priv(dev);
struct ieee80211_txb *txb = NULL;
struct ieee80211_hdr *frag_hdr;
int i, bytes_per_frag, nr_frags, bytes_last_frag, frag_size;
unsigned long flags;
struct net_device_stats *stats = &ieee->stats;
int ether_type, encrypt;
int bytes, fc, hdr_len;
struct sk_buff *skb_frag;
struct ieee80211_hdr header = { /* Ensure zero initialized */
.duration_id = 0,
.seq_ctl = 0
};
u8 dest[ETH_ALEN], src[ETH_ALEN];
struct ieee80211_crypt_data* crypt;
spin_lock_irqsave(&ieee->lock, flags);
/* If there is no driver handler to take the TXB, dont' bother
* creating it... */
if (!ieee->hard_start_xmit) {
printk(KERN_WARNING "%s: No xmit handler.\n",
ieee->dev->name);
goto success;
}
if (unlikely(skb->len < SNAP_SIZE + sizeof(u16))) {
printk(KERN_WARNING "%s: skb too small (%d).\n",
ieee->dev->name, skb->len);
goto success;
}
ether_type = ntohs(((struct ethhdr *)skb->data)->h_proto);
crypt = ieee->crypt[ieee->tx_keyidx];
encrypt = !(ether_type == ETH_P_PAE && ieee->ieee802_1x) &&
ieee->host_encrypt && crypt && crypt->ops;
if (!encrypt && ieee->ieee802_1x &&
ieee->drop_unencrypted && ether_type != ETH_P_PAE) {
stats->tx_dropped++;
goto success;
}
#ifdef CONFIG_IEEE80211_DEBUG
if (crypt && !encrypt && ether_type == ETH_P_PAE) {
struct eapol *eap = (struct eapol *)(skb->data +
sizeof(struct ethhdr) - SNAP_SIZE - sizeof(u16));
IEEE80211_DEBUG_EAP("TX: IEEE 802.11 EAPOL frame: %s\n",
eap_get_type(eap->type));
}
#endif
/* Save source and destination addresses */
memcpy(&dest, skb->data, ETH_ALEN);
memcpy(&src, skb->data+ETH_ALEN, ETH_ALEN);
/* Advance the SKB to the start of the payload */
skb_pull(skb, sizeof(struct ethhdr));
/* Determine total amount of storage required for TXB packets */
bytes = skb->len + SNAP_SIZE + sizeof(u16);
if (encrypt)
fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA |
IEEE80211_FCTL_WEP;
else
fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA;
if (ieee->iw_mode == IW_MODE_INFRA) {
fc |= IEEE80211_FCTL_TODS;
/* To DS: Addr1 = BSSID, Addr2 = SA,
Addr3 = DA */
memcpy(&header.addr1, ieee->bssid, ETH_ALEN);
memcpy(&header.addr2, &src, ETH_ALEN);
memcpy(&header.addr3, &dest, ETH_ALEN);
} else if (ieee->iw_mode == IW_MODE_ADHOC) {
/* not From/To DS: Addr1 = DA, Addr2 = SA,
Addr3 = BSSID */
memcpy(&header.addr1, dest, ETH_ALEN);
memcpy(&header.addr2, src, ETH_ALEN);
memcpy(&header.addr3, ieee->bssid, ETH_ALEN);
}
header.frame_ctl = cpu_to_le16(fc);
hdr_len = IEEE80211_3ADDR_LEN;
/* Determine fragmentation size based on destination (multicast
* and broadcast are not fragmented) */
if (is_multicast_ether_addr(dest) ||
is_broadcast_ether_addr(dest))
frag_size = MAX_FRAG_THRESHOLD;
else
frag_size = ieee->fts;
/* Determine amount of payload per fragment. Regardless of if
* this stack is providing the full 802.11 header, one will
* eventually be affixed to this fragment -- so we must account for
* it when determining the amount of payload space. */
bytes_per_frag = frag_size - IEEE80211_3ADDR_LEN;
if (ieee->config &
(CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS))
bytes_per_frag -= IEEE80211_FCS_LEN;
/* Each fragment may need to have room for encryptiong pre/postfix */
if (encrypt)
bytes_per_frag -= crypt->ops->extra_prefix_len +
crypt->ops->extra_postfix_len;
/* Number of fragments is the total bytes_per_frag /
* payload_per_fragment */
nr_frags = bytes / bytes_per_frag;
bytes_last_frag = bytes % bytes_per_frag;
if (bytes_last_frag)
nr_frags++;
else
bytes_last_frag = bytes_per_frag;
/* When we allocate the TXB we allocate enough space for the reserve
* and full fragment bytes (bytes_per_frag doesn't include prefix,
* postfix, header, FCS, etc.) */
txb = ieee80211_alloc_txb(nr_frags, frag_size, GFP_ATOMIC);
if (unlikely(!txb)) {
printk(KERN_WARNING "%s: Could not allocate TXB\n",
ieee->dev->name);
goto failed;
}
txb->encrypted = encrypt;
txb->payload_size = bytes;
for (i = 0; i < nr_frags; i++) {
skb_frag = txb->fragments[i];
if (encrypt)
skb_reserve(skb_frag, crypt->ops->extra_prefix_len);
frag_hdr = (struct ieee80211_hdr *)skb_put(skb_frag, hdr_len);
memcpy(frag_hdr, &header, hdr_len);
/* If this is not the last fragment, then add the MOREFRAGS
* bit to the frame control */
if (i != nr_frags - 1) {
frag_hdr->frame_ctl = cpu_to_le16(
fc | IEEE80211_FCTL_MOREFRAGS);
bytes = bytes_per_frag;
} else {
/* The last fragment takes the remaining length */
bytes = bytes_last_frag;
}
/* Put a SNAP header on the first fragment */
if (i == 0) {
ieee80211_put_snap(
skb_put(skb_frag, SNAP_SIZE + sizeof(u16)),
ether_type);
bytes -= SNAP_SIZE + sizeof(u16);
}
memcpy(skb_put(skb_frag, bytes), skb->data, bytes);
/* Advance the SKB... */
skb_pull(skb, bytes);
/* Encryption routine will move the header forward in order
* to insert the IV between the header and the payload */
if (encrypt)
ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len);
if (ieee->config &
(CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS))
skb_put(skb_frag, 4);
}
success:
spin_unlock_irqrestore(&ieee->lock, flags);
dev_kfree_skb_any(skb);
if (txb) {
if ((*ieee->hard_start_xmit)(txb, dev) == 0) {
stats->tx_packets++;
stats->tx_bytes += txb->payload_size;
return 0;
}
ieee80211_txb_free(txb);
}
return 0;
failed:
spin_unlock_irqrestore(&ieee->lock, flags);
netif_stop_queue(dev);
stats->tx_errors++;
return 1;
}
EXPORT_SYMBOL(ieee80211_txb_free);

471
net/ieee80211/ieee80211_wx.c Normal file
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@ -0,0 +1,471 @@
/******************************************************************************
Copyright(c) 2004 Intel Corporation. All rights reserved.
Portions of this file are based on the WEP enablement code provided by the
Host AP project hostap-drivers v0.1.3
Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
<jkmaline@cc.hut.fi>
Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
This program is free software; you can redistribute it and/or modify it
under the terms of version 2 of the GNU General Public License as
published by the Free Software Foundation.
This program 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 General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59
Temple Place - Suite 330, Boston, MA 02111-1307, USA.
The full GNU General Public License is included in this distribution in the
file called LICENSE.
Contact Information:
James P. Ketrenos <ipw2100-admin@linux.intel.com>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
******************************************************************************/
#include <linux/wireless.h>
#include <linux/version.h>
#include <linux/kmod.h>
#include <linux/module.h>
#include <net/ieee80211.h>
static const char *ieee80211_modes[] = {
"?", "a", "b", "ab", "g", "ag", "bg", "abg"
};
#define MAX_CUSTOM_LEN 64
static inline char *ipw2100_translate_scan(struct ieee80211_device *ieee,
char *start, char *stop,
struct ieee80211_network *network)
{
char custom[MAX_CUSTOM_LEN];
char *p;
struct iw_event iwe;
int i, j;
u8 max_rate, rate;
/* First entry *MUST* be the AP MAC address */
iwe.cmd = SIOCGIWAP;
iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
memcpy(iwe.u.ap_addr.sa_data, network->bssid, ETH_ALEN);
start = iwe_stream_add_event(start, stop, &iwe, IW_EV_ADDR_LEN);
/* Remaining entries will be displayed in the order we provide them */
/* Add the ESSID */
iwe.cmd = SIOCGIWESSID;
iwe.u.data.flags = 1;
if (network->flags & NETWORK_EMPTY_ESSID) {
iwe.u.data.length = sizeof("<hidden>");
start = iwe_stream_add_point(start, stop, &iwe, "<hidden>");
} else {
iwe.u.data.length = min(network->ssid_len, (u8)32);
start = iwe_stream_add_point(start, stop, &iwe, network->ssid);
}
/* Add the protocol name */
iwe.cmd = SIOCGIWNAME;
snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s", ieee80211_modes[network->mode]);
start = iwe_stream_add_event(start, stop, &iwe, IW_EV_CHAR_LEN);
/* Add mode */
iwe.cmd = SIOCGIWMODE;
if (network->capability &
(WLAN_CAPABILITY_BSS | WLAN_CAPABILITY_IBSS)) {
if (network->capability & WLAN_CAPABILITY_BSS)
iwe.u.mode = IW_MODE_MASTER;
else
iwe.u.mode = IW_MODE_ADHOC;
start = iwe_stream_add_event(start, stop, &iwe,
IW_EV_UINT_LEN);
}
/* Add frequency/channel */
iwe.cmd = SIOCGIWFREQ;
/* iwe.u.freq.m = ieee80211_frequency(network->channel, network->mode);
iwe.u.freq.e = 3; */
iwe.u.freq.m = network->channel;
iwe.u.freq.e = 0;
iwe.u.freq.i = 0;
start = iwe_stream_add_event(start, stop, &iwe, IW_EV_FREQ_LEN);
/* Add encryption capability */
iwe.cmd = SIOCGIWENCODE;
if (network->capability & WLAN_CAPABILITY_PRIVACY)
iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
else
iwe.u.data.flags = IW_ENCODE_DISABLED;
iwe.u.data.length = 0;
start = iwe_stream_add_point(start, stop, &iwe, network->ssid);
/* Add basic and extended rates */
max_rate = 0;
p = custom;
p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Rates (Mb/s): ");
for (i = 0, j = 0; i < network->rates_len; ) {
if (j < network->rates_ex_len &&
((network->rates_ex[j] & 0x7F) <
(network->rates[i] & 0x7F)))
rate = network->rates_ex[j++] & 0x7F;
else
rate = network->rates[i++] & 0x7F;
if (rate > max_rate)
max_rate = rate;
p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
"%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
}
for (; j < network->rates_ex_len; j++) {
rate = network->rates_ex[j] & 0x7F;
p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
"%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
if (rate > max_rate)
max_rate = rate;
}
iwe.cmd = SIOCGIWRATE;
iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
iwe.u.bitrate.value = max_rate * 500000;
start = iwe_stream_add_event(start, stop, &iwe,
IW_EV_PARAM_LEN);
iwe.cmd = IWEVCUSTOM;
iwe.u.data.length = p - custom;
if (iwe.u.data.length)
start = iwe_stream_add_point(start, stop, &iwe, custom);
/* Add quality statistics */
/* TODO: Fix these values... */
iwe.cmd = IWEVQUAL;
iwe.u.qual.qual = network->stats.signal;
iwe.u.qual.level = network->stats.rssi;
iwe.u.qual.noise = network->stats.noise;
iwe.u.qual.updated = network->stats.mask & IEEE80211_STATMASK_WEMASK;
if (!(network->stats.mask & IEEE80211_STATMASK_RSSI))
iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
if (!(network->stats.mask & IEEE80211_STATMASK_NOISE))
iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
if (!(network->stats.mask & IEEE80211_STATMASK_SIGNAL))
iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID;
start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN);
iwe.cmd = IWEVCUSTOM;
p = custom;
iwe.u.data.length = p - custom;
if (iwe.u.data.length)
start = iwe_stream_add_point(start, stop, &iwe, custom);
if (ieee->wpa_enabled && network->wpa_ie_len){
char buf[MAX_WPA_IE_LEN * 2 + 30];
u8 *p = buf;
p += sprintf(p, "wpa_ie=");
for (i = 0; i < network->wpa_ie_len; i++) {
p += sprintf(p, "%02x", network->wpa_ie[i]);
}
memset(&iwe, 0, sizeof(iwe));
iwe.cmd = IWEVCUSTOM;
iwe.u.data.length = strlen(buf);
start = iwe_stream_add_point(start, stop, &iwe, buf);
}
if (ieee->wpa_enabled && network->rsn_ie_len){
char buf[MAX_WPA_IE_LEN * 2 + 30];
u8 *p = buf;
p += sprintf(p, "rsn_ie=");
for (i = 0; i < network->rsn_ie_len; i++) {
p += sprintf(p, "%02x", network->rsn_ie[i]);
}
memset(&iwe, 0, sizeof(iwe));
iwe.cmd = IWEVCUSTOM;
iwe.u.data.length = strlen(buf);
start = iwe_stream_add_point(start, stop, &iwe, buf);
}
/* Add EXTRA: Age to display seconds since last beacon/probe response
* for given network. */
iwe.cmd = IWEVCUSTOM;
p = custom;
p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
" Last beacon: %lums ago", (jiffies - network->last_scanned) / (HZ / 100));
iwe.u.data.length = p - custom;
if (iwe.u.data.length)
start = iwe_stream_add_point(start, stop, &iwe, custom);
return start;
}
int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct ieee80211_network *network;
unsigned long flags;
char *ev = extra;
char *stop = ev + IW_SCAN_MAX_DATA;
int i = 0;
IEEE80211_DEBUG_WX("Getting scan\n");
spin_lock_irqsave(&ieee->lock, flags);
list_for_each_entry(network, &ieee->network_list, list) {
i++;
if (ieee->scan_age == 0 ||
time_after(network->last_scanned + ieee->scan_age, jiffies))
ev = ipw2100_translate_scan(ieee, ev, stop, network);
else
IEEE80211_DEBUG_SCAN(
"Not showing network '%s ("
MAC_FMT ")' due to age (%lums).\n",
escape_essid(network->ssid,
network->ssid_len),
MAC_ARG(network->bssid),
(jiffies - network->last_scanned) / (HZ / 100));
}
spin_unlock_irqrestore(&ieee->lock, flags);
wrqu->data.length = ev - extra;
wrqu->data.flags = 0;
IEEE80211_DEBUG_WX("exit: %d networks returned.\n", i);
return 0;
}
int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *keybuf)
{
struct iw_point *erq = &(wrqu->encoding);
struct net_device *dev = ieee->dev;
struct ieee80211_security sec = {
.flags = 0
};
int i, key, key_provided, len;
struct ieee80211_crypt_data **crypt;
IEEE80211_DEBUG_WX("SET_ENCODE\n");
key = erq->flags & IW_ENCODE_INDEX;
if (key) {
if (key > WEP_KEYS)
return -EINVAL;
key--;
key_provided = 1;
} else {
key_provided = 0;
key = ieee->tx_keyidx;
}
IEEE80211_DEBUG_WX("Key: %d [%s]\n", key, key_provided ?
"provided" : "default");
crypt = &ieee->crypt[key];
if (erq->flags & IW_ENCODE_DISABLED) {
if (key_provided && *crypt) {
IEEE80211_DEBUG_WX("Disabling encryption on key %d.\n",
key);
ieee80211_crypt_delayed_deinit(ieee, crypt);
} else
IEEE80211_DEBUG_WX("Disabling encryption.\n");
/* Check all the keys to see if any are still configured,
* and if no key index was provided, de-init them all */
for (i = 0; i < WEP_KEYS; i++) {
if (ieee->crypt[i] != NULL) {
if (key_provided)
break;
ieee80211_crypt_delayed_deinit(
ieee, &ieee->crypt[i]);
}
}
if (i == WEP_KEYS) {
sec.enabled = 0;
sec.level = SEC_LEVEL_0;
sec.flags |= SEC_ENABLED | SEC_LEVEL;
}
goto done;
}
sec.enabled = 1;
sec.flags |= SEC_ENABLED;
if (*crypt != NULL && (*crypt)->ops != NULL &&
strcmp((*crypt)->ops->name, "WEP") != 0) {
/* changing to use WEP; deinit previously used algorithm
* on this key */
ieee80211_crypt_delayed_deinit(ieee, crypt);
}
if (*crypt == NULL) {
struct ieee80211_crypt_data *new_crypt;
/* take WEP into use */
new_crypt = kmalloc(sizeof(struct ieee80211_crypt_data),
GFP_KERNEL);
if (new_crypt == NULL)
return -ENOMEM;
memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
new_crypt->ops = ieee80211_get_crypto_ops("WEP");
if (!new_crypt->ops) {
request_module("ieee80211_crypt_wep");
new_crypt->ops = ieee80211_get_crypto_ops("WEP");
}
if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
new_crypt->priv = new_crypt->ops->init(key);
if (!new_crypt->ops || !new_crypt->priv) {
kfree(new_crypt);
new_crypt = NULL;
printk(KERN_WARNING "%s: could not initialize WEP: "
"load module ieee80211_crypt_wep\n",
dev->name);
return -EOPNOTSUPP;
}
*crypt = new_crypt;
}
/* If a new key was provided, set it up */
if (erq->length > 0) {
len = erq->length <= 5 ? 5 : 13;
memcpy(sec.keys[key], keybuf, erq->length);
if (len > erq->length)
memset(sec.keys[key] + erq->length, 0,
len - erq->length);
IEEE80211_DEBUG_WX("Setting key %d to '%s' (%d:%d bytes)\n",
key, escape_essid(sec.keys[key], len),
erq->length, len);
sec.key_sizes[key] = len;
(*crypt)->ops->set_key(sec.keys[key], len, NULL,
(*crypt)->priv);
sec.flags |= (1 << key);
/* This ensures a key will be activated if no key is
* explicitely set */
if (key == sec.active_key)
sec.flags |= SEC_ACTIVE_KEY;
} else {
len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
NULL, (*crypt)->priv);
if (len == 0) {
/* Set a default key of all 0 */
IEEE80211_DEBUG_WX("Setting key %d to all zero.\n",
key);
memset(sec.keys[key], 0, 13);
(*crypt)->ops->set_key(sec.keys[key], 13, NULL,
(*crypt)->priv);
sec.key_sizes[key] = 13;
sec.flags |= (1 << key);
}
/* No key data - just set the default TX key index */
if (key_provided) {
IEEE80211_DEBUG_WX(
"Setting key %d to default Tx key.\n", key);
ieee->tx_keyidx = key;
sec.active_key = key;
sec.flags |= SEC_ACTIVE_KEY;
}
}
done:
ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY;
sec.flags |= SEC_AUTH_MODE;
IEEE80211_DEBUG_WX("Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ?
"OPEN" : "SHARED KEY");
/* For now we just support WEP, so only set that security level...
* TODO: When WPA is added this is one place that needs to change */
sec.flags |= SEC_LEVEL;
sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */
if (ieee->set_security)
ieee->set_security(dev, &sec);
/* Do not reset port if card is in Managed mode since resetting will
* generate new IEEE 802.11 authentication which may end up in looping
* with IEEE 802.1X. If your hardware requires a reset after WEP
* configuration (for example... Prism2), implement the reset_port in
* the callbacks structures used to initialize the 802.11 stack. */
if (ieee->reset_on_keychange &&
ieee->iw_mode != IW_MODE_INFRA &&
ieee->reset_port && ieee->reset_port(dev)) {
printk(KERN_DEBUG "%s: reset_port failed\n", dev->name);
return -EINVAL;
}
return 0;
}
int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *keybuf)
{
struct iw_point *erq = &(wrqu->encoding);
int len, key;
struct ieee80211_crypt_data *crypt;
IEEE80211_DEBUG_WX("GET_ENCODE\n");
key = erq->flags & IW_ENCODE_INDEX;
if (key) {
if (key > WEP_KEYS)
return -EINVAL;
key--;
} else
key = ieee->tx_keyidx;
crypt = ieee->crypt[key];
erq->flags = key + 1;
if (crypt == NULL || crypt->ops == NULL) {
erq->length = 0;
erq->flags |= IW_ENCODE_DISABLED;
return 0;
}
if (strcmp(crypt->ops->name, "WEP") != 0) {
/* only WEP is supported with wireless extensions, so just
* report that encryption is used */
erq->length = 0;
erq->flags |= IW_ENCODE_ENABLED;
return 0;
}
len = crypt->ops->get_key(keybuf, WEP_KEY_LEN, NULL, crypt->priv);
erq->length = (len >= 0 ? len : 0);
erq->flags |= IW_ENCODE_ENABLED;
if (ieee->open_wep)
erq->flags |= IW_ENCODE_OPEN;
else
erq->flags |= IW_ENCODE_RESTRICTED;
return 0;
}
EXPORT_SYMBOL(ieee80211_wx_get_scan);
EXPORT_SYMBOL(ieee80211_wx_set_encode);
EXPORT_SYMBOL(ieee80211_wx_get_encode);