taglinefilesource code
link344include/linux/skbuff.hstruct sk_buff    * volatile link3;
link3304net/inet/af_inet.cskb2 = skb->link3;
link31739net/inet/ip.cif (skb->link3 != NULL)
link31742net/inet/ip.cskb->link3 = NULL;
link31751net/inet/ip.csk->send_tail->link3 = skb;
link31884net/inet/ip.cskb = skb->link3;
link3436net/inet/skbuff.cskb->link3 = NULL;
link3504net/inet/skbuff.cn->link3=NULL;
link32500net/inet/tcp.cskb2 = skb->link3;
link32503net/inet/tcp.cskb->link3 = list;
link32509net/inet/tcp.cfor (skb3 = list; ; skb3 = skb3->link3) 
link32511net/inet/tcp.cif (skb3->link3 == NULL ||
link32512net/inet/tcp.cbefore(skb->h.seq, skb3->link3->h.seq))
link32514net/inet/tcp.cskb->link3 = skb3->link3;
link32515net/inet/tcp.cskb3->link3 = skb;
link32516net/inet/tcp.cif (skb->link3 == NULL) 
link32610net/inet/tcp.cskb2 = skb->link3;
link32611net/inet/tcp.cskb->link3 = NULL;
link32637net/inet/tcp.csk->send_tail->link3 = skb;
link32640net/inet/tcp.cskb->link3 = NULL;
link32725net/inet/tcp.cif (sk->send_head->link3 &&
link32726net/inet/tcp.cafter(sk->send_head->h.seq, sk->send_head->link3->h.seq)) 
link32750net/inet/tcp.cif (sk->send_head->link3)
link32817net/inet/tcp.csk->send_head = oskb->link3;