taglinefilesource code
data_skb92include/linux/skbuff.hstruct sk_buff    *data_skb;    /* Link to the actual data skb      */
data_skb547net/core/skbuff.cskb->data_skb = NULL;  /* and we're our own data skb */
data_skb593net/core/skbuff.cif (skb->data_skb) {
data_skb595net/core/skbuff.ckfree_skbmem(skb->data_skb);
data_skb619net/core/skbuff.cif (skb->data_skb)
data_skb620net/core/skbuff.cskb = skb->data_skb;
data_skb627net/core/skbuff.cn->data_skb = skb;