diff options
Diffstat (limited to 'net/core/secure_seq.c')
| -rw-r--r-- | net/core/secure_seq.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/net/core/secure_seq.c b/net/core/secure_seq.c index 3f1ec1586ae..897da56f3af 100644 --- a/net/core/secure_seq.c +++ b/net/core/secure_seq.c @@ -7,28 +7,20 @@ #include <linux/hrtimer.h> #include <linux/ktime.h> #include <linux/string.h> +#include <linux/net.h> #include <net/secure_seq.h> +#if IS_ENABLED(CONFIG_IPV6) || IS_ENABLED(CONFIG_INET) #define NET_SECRET_SIZE (MD5_MESSAGE_BYTES / 4) static u32 net_secret[NET_SECRET_SIZE] ____cacheline_aligned; -static void net_secret_init(void) +static __always_inline 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)); } +#endif #ifdef CONFIG_INET static u32 seq_scale(u32 seq) |