+/* TX/RX descriptor defines */
+#define DEFAULT_TXD 256
+#define MAX_TXD 4096
+#define MIN_TXD 64
+
+/* hardware cannot reliably support more than 512 descriptors owned by
+ * hardware descrioptor cache otherwise an unreliable ring under heavy
+ * recieve load may result */
+/* #define DEFAULT_RXD 1024 */
+/* #define MAX_RXD 4096 */
+#define DEFAULT_RXD 512
+#define MAX_RXD 512
+#define MIN_RXD 64
+