mbim_tx_hdr
struct mbim_tx_hdr *mbim_hdr;
if (skb_cow_head(skb, sizeof(struct mbim_tx_hdr))) {
mbim_hdr = skb_push(skb, sizeof(struct mbim_tx_hdr));
ndp16->dpe16[0].wDatagramIndex = cpu_to_le16(sizeof(struct mbim_tx_hdr));
ndev->needed_headroom = sizeof(struct mbim_tx_hdr);