- void skb_complete_tx_timestamp(struct sk_buff * skb, struct skb_shared_hwtstamps * hwtstamps);
- clone of the the original outgoing packet
- hardware time stamps, may be NULL if not available
PHY drivers may accept clones of transmitted packets for timestamping via their phy_driver.txtstamp method. These drivers must call this function to return the skb back to the stack, with or without a timestamp.