diff --git a/src/include/liburing.h b/src/include/liburing.h
index 49b4edf..a15bc33 100644
--- a/src/include/liburing.h
+++ b/src/include/liburing.h
@@ -132,6 +132,16 @@ struct io_uring {
 	unsigned pad2;
 };
 
+struct io_uring_zcrx_rq {
+ 	__u32 *khead;
+ 	__u32 *ktail;
+ 	__u32 rq_tail;
+ 	unsigned ring_entries;
+ 
+ 	struct io_uring_zcrx_rqe *rqes;
+ 	void *ring_ptr;
+ };
+
 /*
  * Library interface
  */
@@ -265,6 +275,8 @@ int io_uring_register_file_alloc_range(struct io_uring *ring,
 
 int io_uring_register_napi(struct io_uring *ring, struct io_uring_napi *napi);
 int io_uring_unregister_napi(struct io_uring *ring, struct io_uring_napi *napi);
+int io_uring_register_ifq(struct io_uring *ring,
+ 			  struct io_uring_zcrx_ifq_reg *reg);
 
 int io_uring_register_clock(struct io_uring *ring,
 			    struct io_uring_clock_register *arg);
diff --git a/src/register.c b/src/register.c
index 0fff208..20a624c 100644
--- a/src/register.c
+++ b/src/register.c
@@ -422,6 +422,12 @@ int io_uring_clone_buffers(struct io_uring *dst, struct io_uring *src)
 	return io_uring_clone_buffers_offset(dst, src, 0, 0, 0, 0);
 }
 
+int io_uring_register_ifq(struct io_uring *ring,
+ 			  struct io_uring_zcrx_ifq_reg *reg)
+ {
+ 	return do_register(ring, IORING_REGISTER_ZCRX_IFQ, reg, 1);
+ }
+
 int io_uring_resize_rings(struct io_uring *ring, struct io_uring_params *p)
 {
 	unsigned sq_head, sq_tail;