TG3_RX_JMB_RING_SIZE
val = TG3_RX_JMB_RING_SIZE(tp) <<
(sizeof(struct tg3_ext_rx_buffer_desc) * TG3_RX_JMB_RING_SIZE(tp))
tp->rx_jmb_ring_mask = TG3_RX_JMB_RING_SIZE(tp) - 1;
(sizeof(struct ring_info) * TG3_RX_JMB_RING_SIZE(tp))