1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/hw_random.h b/include/linux/hw_random.h
index b4b0eef5fddf..914bb08cd738 100644
--- a/include/linux/hw_random.h
+++ b/include/linux/hw_random.h
@@ -29,6 +29,8 @@
  * @read:               New API. drivers can fill up to max bytes of data
  *                      into the buffer. The buffer is aligned for any type.
  * @priv:               Private data, for use by the RNG driver.
+ * @quality:            Estimation of true entropy in RNG's bitstream
+ *                      (per mill).
  */
 struct hwrng {
         const char *name;
@@ -38,6 +40,7 @@ struct hwrng {
         int (*data_read)(struct hwrng *rng, u32 *data);
         int (*read)(struct hwrng *rng, void *data, size_t max, bool wait);
         unsigned long priv;
+        unsigned short quality;
 
         /* internal. */
         struct list_head list;
@@ -47,5 +50,7 @@ struct hwrng {
 extern int hwrng_register(struct hwrng *rng);
 /** Unregister a Hardware Random Number Generator driver. */
 extern void hwrng_unregister(struct hwrng *rng);
+/** Feed random bits into the pool. */
+extern void add_hwgenerator_randomness(const char *buffer, size_t count, size_t entropy);
 
 #endif /* LINUX_HWRANDOM_H_ */