SJA1105_SKB_CB
clone = SJA1105_SKB_CB(skb)->clone;
ts = SJA1105_SKB_CB(skb)->tstamp;
u64 ts = SJA1105_SKB_CB(skb)->tstamp;
if (SJA1105_SKB_CB(skb)->ts_id != ts_id)
struct sk_buff *clone = SJA1105_SKB_CB(skb)->clone;
SJA1105_SKB_CB(clone)->ts_id = ts_id;
SJA1105_SKB_CB(skb)->clone = clone;
struct sk_buff *clone = SJA1105_SKB_CB(skb)->clone;
u8 ts_id = SJA1105_SKB_CB(clone)->ts_id;
SJA1105_SKB_CB(skb)->tstamp = meta->tstamp;
u64 *tstamp = &SJA1105_SKB_CB(skb)->tstamp;