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net: switch net_secret key generation to net_get_random_once 

Cc: Eric Dumazet <edumazet@google.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hannes Frederic Sowa 2013-10-19 21:48:59 +02:00 committed by David S. Miller
parent 222e83d2e0
commit e34c9a6997
1 changed files with 2 additions and 12 deletions
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14
net/core/secure_seq.c
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@ -7,6 +7,7 @@
#include <linux/hrtimer.h>
#include <linux/ktime.h>
#include <linux/string.h>
#include <linux/net.h>
#include <net/secure_seq.h>
@ -16,18 +17,7 @@ static u32 net_secret[NET_SECRET_SIZE] ____cacheline_aligned;
static void net_secret_init(void)
{
u32 tmp;
int i;
if (likely(net_secret[0]))
return;
for (i = NET_SECRET_SIZE; i > 0;) {
do {
get_random_bytes(&tmp, sizeof(tmp));
} while (!tmp);
cmpxchg(&net_secret[--i], 0, tmp);
}
net_get_random_once(net_secret, sizeof(net_secret));
}
#ifdef CONFIG_INET