taglinefilesource code
link344include/linux/skbuff.hstruct sk_buff    * volatile link3;
link3295net/inet/af_inet.cskb2 = skb->link3;
link31734net/inet/ip.cif (skb->link3 != NULL)
link31737net/inet/ip.cskb->link3 = NULL;
link31746net/inet/ip.csk->send_tail->link3 = skb;
link31881net/inet/ip.cskb = skb->link3;
link3442net/inet/skbuff.cskb->link3 = NULL;
link3510net/inet/skbuff.cn->link3=NULL;
link32445net/inet/tcp.cskb2 = skb->link3;
link32448net/inet/tcp.cskb->link3 = list;
link32454net/inet/tcp.cfor (skb3 = list; ; skb3 = skb3->link3) 
link32456net/inet/tcp.cif (skb3->link3 == NULL ||
link32457net/inet/tcp.cbefore(skb->h.seq, skb3->link3->h.seq))
link32459net/inet/tcp.cskb->link3 = skb3->link3;
link32460net/inet/tcp.cskb3->link3 = skb;
link32461net/inet/tcp.cif (skb->link3 == NULL) 
link32558net/inet/tcp.cskb2 = skb->link3;
link32559net/inet/tcp.cskb->link3 = NULL;
link32585net/inet/tcp.csk->send_tail->link3 = skb;
link32588net/inet/tcp.cskb->link3 = NULL;
link32673net/inet/tcp.cif (sk->send_head->link3 &&
link32674net/inet/tcp.cafter(sk->send_head->h.seq, sk->send_head->link3->h.seq)) 
link32698net/inet/tcp.cif (sk->send_head->link3)
link32765net/inet/tcp.csk->send_head = oskb->link3;