SKB_DATAREF_SHIFT 337 include/linux/skbuff.h #define SKB_DATAREF_MASK ((1 << SKB_DATAREF_SHIFT) - 1) SKB_DATAREF_SHIFT 1114 include/linux/skbuff.h dataref = (dataref & SKB_DATAREF_MASK) - (dataref >> SKB_DATAREF_SHIFT); SKB_DATAREF_SHIFT 1131 include/linux/skbuff.h atomic_add(1 << SKB_DATAREF_SHIFT, &skb_shinfo(skb)->dataref); SKB_DATAREF_SHIFT 1144 include/linux/skbuff.h atomic_set(&skb_shinfo(skb)->dataref, 1 + (1 << SKB_DATAREF_SHIFT));