NET_TX_RING_SIZE
struct sk_buff *tx_skbs[NET_TX_RING_SIZE];
unsigned short tx_link[NET_TX_RING_SIZE];
grant_ref_t grant_tx_ref[NET_TX_RING_SIZE];
struct page *grant_tx_page[NET_TX_RING_SIZE];
for (i = 0; i < NET_TX_RING_SIZE; i++) {
for (i = 0; i < NET_TX_RING_SIZE; i++) {
queue->tx_link[NET_TX_RING_SIZE - 1] = TX_LINK_NONE;
if (gnttab_alloc_grant_references(NET_TX_RING_SIZE,
(NET_TX_RING_SIZE - XEN_NETIF_NR_SLOTS_MIN - 1);