-void icmp4_error_set_vnet_buffer (vlib_buffer_t * b, u8 type, u8 code,
- u32 data);
+
+static_always_inline void
+icmp4_error_set_vnet_buffer (vlib_buffer_t * b, u8 type, u8 code, u32 data)
+{
+ vnet_buffer (b)->ip.icmp.type = type;
+ vnet_buffer (b)->ip.icmp.code = code;
+ vnet_buffer (b)->ip.icmp.data = data;
+}