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Diffstat (limited to 'include/linux/siphash.h')
-rw-r--r--include/linux/siphash.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/siphash.h b/include/linux/siphash.h
index fa7a6b9cedbf..bf21591a9e5e 100644
--- a/include/linux/siphash.h
+++ b/include/linux/siphash.h
@@ -21,6 +21,11 @@ typedef struct {
u64 key[2];
} siphash_key_t;
+static inline bool siphash_key_is_zero(const siphash_key_t *key)
+{
+ return !(key->key[0] | key->key[1]);
+}
+
u64 __siphash_aligned(const void *data, size_t len, const siphash_key_t *key);
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
u64 __siphash_unaligned(const void *data, size_t len, const siphash_key_t *key);