diff --git a/libc/kernel/uapi/rdma/efa-abi.h b/libc/kernel/uapi/rdma/efa-abi.h
index 1445c9c..39fd55b 100644
--- a/libc/kernel/uapi/rdma/efa-abi.h
+++ b/libc/kernel/uapi/rdma/efa-abi.h
@@ -78,11 +78,16 @@
   __u16 efa_address_handle;
   __u8 reserved_30[2];
 };
+enum {
+  EFA_QUERY_DEVICE_CAPS_RDMA_READ = 1 << 0,
+};
 struct efa_ibv_ex_query_device_resp {
   __u32 comp_mask;
   __u32 max_sq_wr;
   __u32 max_rq_wr;
   __u16 max_sq_sge;
   __u16 max_rq_sge;
+  __u32 max_rdma_size;
+  __u32 device_caps;
 };
 #endif