TLAN_NUM_TX_LISTS
struct TLanList tx_ring[TLAN_NUM_TX_LISTS];
static unsigned char txb[TLAN_MAX_FRAME_SIZE * TLAN_NUM_TX_LISTS];
for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
entry = priv->dirty_rx % TLAN_NUM_TX_LISTS;
(priv->txList + (TLAN_NUM_TX_LISTS - 1))->forward =
CIRC_INC(priv->txTail, TLAN_NUM_TX_LISTS);
CIRC_INC(priv->txHead, TLAN_NUM_TX_LISTS);