taglinefilesource code
send_head198include/net/sock.hstruct sk_buff    * volatile send_head;
send_head356net/ipv4/af_inet.cfor(skb = sk->send_head; skb != NULL; )
send_head374net/ipv4/af_inet.csk->send_head = NULL;
send_head449net/ipv4/ip_output.cif (sk->send_head == NULL)
send_head452net/ipv4/ip_output.csk->send_head = skb;
send_head398net/ipv4/tcp_input.cnewsk->send_head = NULL;
send_head541net/ipv4/tcp_input.cskb2 = sk->send_head;
send_head542net/ipv4/tcp_input.csk->send_head = NULL;
send_head573net/ipv4/tcp_input.cif (sk->send_head == NULL) 
send_head575net/ipv4/tcp_input.csk->send_head = skb;
send_head663net/ipv4/tcp_input.cif (sk->send_tail == NULL || sk->send_head == NULL) 
send_head665net/ipv4/tcp_input.csk->send_head = NULL;
send_head813net/ipv4/tcp_input.cstruct sk_buff * skb = sk->send_head;
send_head837net/ipv4/tcp_input.cif ((sk->send_head = skb->link3) == NULL)
send_head907net/ipv4/tcp_input.csk->send_head == NULL &&
send_head950net/ipv4/tcp_input.cif (sk->send_head || !skb_queue_empty(&sk->write_queue)) {
send_head970net/ipv4/tcp_input.c&& sk->send_head == NULL) 
send_head1086net/ipv4/tcp_input.cif (((!flag) || (flag&4)) && sk->send_head != NULL &&
send_head1088net/ipv4/tcp_input.c(sk->send_head->when + sk->rto < jiffies)))
send_head1090net/ipv4/tcp_input.cif(sk->send_head->when + sk->rto < jiffies)
send_head114net/ipv4/tcp_output.csk->send_head == NULL && sk->ack_backlog == 0)
send_head329net/ipv4/tcp_output.cskb = sk->send_head;
send_head810net/ipv4/tcp_output.cif (sk->send_head == NULL
send_head1703net/ipx/af_ipx.csk->send_head=NULL;