IXGBE_RX_HDR_SIZE
pull_len = eth_get_headlen(skb->dev, va, IXGBE_RX_HDR_SIZE);
skb = napi_alloc_skb(&rx_ring->q_vector->napi, IXGBE_RX_HDR_SIZE);
if (size > IXGBE_RX_HDR_SIZE) {
srrctl = IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT;