diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 97e1fd1..54b93f8 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -3645,6 +3645,8 @@ struct sk_msg_md {
 	__u32 remote_port;	/* Stored in network byte order */
 	__u32 local_port;	/* stored in host byte order */
 	__u32 size;		/* Total size of sk_msg */
+
+	__bpf_md_ptr(struct bpf_sock *, sk); /* current socket */
 };
 
 struct sk_reuseport_md {