SKB_DATAREF_SHIFT 548 include/linux/skbuff.h #define SKB_DATAREF_MASK ((1 << SKB_DATAREF_SHIFT) - 1) SKB_DATAREF_SHIFT 1631 include/linux/skbuff.h dataref = (dataref & SKB_DATAREF_MASK) - (dataref >> SKB_DATAREF_SHIFT); SKB_DATAREF_SHIFT 1652 include/linux/skbuff.h atomic_set(&skb_shinfo(skb)->dataref, 1 + (1 << SKB_DATAREF_SHIFT)); SKB_DATAREF_SHIFT 600 net/core/skbuff.c atomic_sub_return(skb->nohdr ? (1 << SKB_DATAREF_SHIFT) + 1 : 1,