taglinefilesource code
skb_trim140include/linux/skbuff.hextern void       skb_trim(struct sk_buff *skb, int len);
skb_trim1370net/appletalk/ddp.cskb_trim(skb,min(skb->len,ddp->deh_len));
skb_trim1430net/appletalk/ddp.cskb_trim(skb,min(origlen, rt->dev->hard_header_len + 
skb_trim1631net/ax25/af_ax25.cskb_trim(skb, len);  /* Set the length of the data */
skb_trim1391net/ipv4/ip.cskb_trim(skb,ntohs(iph->tot_len));
skb_trim120net/ipv4/raw.cskb_trim(skb,ntohs(skb->ip_hdr->tot_len));
skb_trim4002net/ipv4/tcp.cskb_trim(skb,len-(th->doff*4));
skb_trim5238net/ipv4/tcp.cskb_trim(skb,skb->len-win_size);
skb_trim702net/ipv4/udp.cskb_trim(skb,len);