diff options
| author | Christian Lamparter <chunkeey@googlemail.com> | 2011-08-15 20:09:54 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-08-24 20:41:42 +0200 |
| commit | 00044f17afd36bf6397b9a2a12f242a057449e9a (patch) | |
| tree | 5b216a3fa13357b352bebd28272e0698380a2b54 /drivers/net/wireless/ath/carl9170/carl9170.h | |
| parent | carl9170: improve site survey (diff) | |
| download | linux-00044f17afd36bf6397b9a2a12f242a057449e9a.tar.xz linux-00044f17afd36bf6397b9a2a12f242a057449e9a.zip | |
carl9170: export HW random number generator
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>
Diffstat (limited to 'drivers/net/wireless/ath/carl9170/carl9170.h')
| -rw-r--r-- | drivers/net/wireless/ath/carl9170/carl9170.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/carl9170/carl9170.h b/drivers/net/wireless/ath/carl9170/carl9170.h index 74350d63f686..6cfbb419e2f6 100644 --- a/drivers/net/wireless/ath/carl9170/carl9170.h +++ b/drivers/net/wireless/ath/carl9170/carl9170.h @@ -43,6 +43,7 @@ #include <linux/firmware.h> #include <linux/completion.h> #include <linux/spinlock.h> +#include <linux/hw_random.h> #include <net/cfg80211.h> #include <net/mac80211.h> #include <linux/usb.h> @@ -449,6 +450,17 @@ struct ar9170 { unsigned int off_override; bool state; } ps; + +#ifdef CONFIG_CARL9170_HWRNG +# define CARL9170_HWRNG_CACHE_SIZE CARL9170_MAX_CMD_PAYLOAD_LEN + struct { + struct hwrng rng; + bool initialized; + char name[30 + 1]; + u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)]; + unsigned int cache_idx; + } rng; +#endif /* CONFIG_CARL9170_HWRNG */ }; enum carl9170_ps_off_override_reasons { |