taglinefilesource code
skb_headroom144include/linux/skbuff.hextern int      skb_headroom(struct sk_buff *skb);
skb_headroom2169net/ax25/af_ax25.cif (skb_headroom(skb) < AX25_BPQ_HEADER_LEN) 
skb_headroom70net/ax25/ax25_out.cfrontlen = skb_headroom(skb);  /* Address space + CTRL */
skb_headroom227net/ax25/ax25_out.cif (skb_headroom(skb) < size_ax25_addr(ax25->digipeat)) {
skb_headroom253net/ipv4/ip_forward.cif(skb_headroom(skb)-encap<dev2->hard_header_len)
skb_headroom257net/ipv4/ip_forward.cif(skb_headroom(skb)<dev2->hard_header_len)
skb_headroom62net/netrom/nr_out.cfrontlen = skb_headroom(skb);