SKB_DATAREF_MASK  537 include/linux/skbuff.h 	       (atomic_read(&skb_shinfo(skb)->dataref) & SKB_DATAREF_MASK) != 1;
SKB_DATAREF_MASK  555 include/linux/skbuff.h 	dataref = (dataref & SKB_DATAREF_MASK) - (dataref >> SKB_DATAREF_SHIFT);