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All AR9170 hardware have a 16-Bit random number generator. The documentation claims the values are suitable for "security keys". The "throughput" is around 320Kibit/s. It's slow, but it does work without introducing any special offload firmware commands. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
56 lines
1.5 KiB
Plaintext
56 lines
1.5 KiB
Plaintext
config CARL9170
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tristate "Linux Community AR9170 802.11n USB support"
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depends on USB && MAC80211 && EXPERIMENTAL
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select FW_LOADER
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select CRC32
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help
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This is another driver for the Atheros "otus" 802.11n USB devices.
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This driver provides more features than the original,
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but it needs a special firmware (carl9170-1.fw) to do that.
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The firmware can be downloaded from our wiki here:
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<http://wireless.kernel.org/en/users/Drivers/carl9170>
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If you choose to build a module, it'll be called carl9170.
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config CARL9170_LEDS
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bool "SoftLED Support"
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depends on CARL9170
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select MAC80211_LEDS
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select LEDS_CLASS
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select NEW_LEDS
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default y
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help
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This option is necessary, if you want your device' LEDs to blink
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Say Y, unless you need the LEDs for firmware debugging.
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config CARL9170_DEBUGFS
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bool "DebugFS Support"
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depends on CARL9170 && DEBUG_FS && MAC80211_DEBUGFS
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default n
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help
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Export several driver and device internals to user space.
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Say N.
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config CARL9170_WPC
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bool
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depends on CARL9170 && (INPUT = y || INPUT = CARL9170)
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default y
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config CARL9170_HWRNG
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bool "Random number generator"
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depends on CARL9170 && (HW_RANDOM = y || HW_RANDOM = CARL9170)
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default n
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help
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Provides a hardware random number generator to the kernel.
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SECURITY WARNING: It's relatively easy to eavesdrop all
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generated random numbers from the transport stream with
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usbmon [software] or special usb sniffer hardware.
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Say N, unless your setup[i.e.: embedded system] has no
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other rng source and you can afford to take the risk.
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