+typedef struct
+{
+ vnet_crypto_async_frame_t *f;
+
+ u8 enqueued;
+ u8 dequeued;
+ u8 deq_state;
+ u8 frame_inflight;
+
+ u8 op_type;
+ u8 aad_len;
+ u8 n_elts;
+ u8 reserved;
+} cryptodev_async_ring_elt;
+
+typedef struct
+{
+ cryptodev_async_ring_elt frames[VNET_CRYPTO_FRAME_POOL_SIZE];
+ uint16_t head;
+ uint16_t tail;
+ uint16_t enq; /*record the frame currently being enqueued */
+ uint16_t deq; /*record the frame currently being dequeued */
+} cryptodev_async_frame_sw_ring;
+