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_head441net/ipv4/ip_output.cif (sk->send_head == NULL)
send_head444net/ipv4/ip_output.csk->send_head = skb;
send_head392net/ipv4/tcp_input.cnewsk->send_head = NULL;
send_head535net/ipv4/tcp_input.cskb2 = sk->send_head;
send_head536net/ipv4/tcp_input.csk->send_head = NULL;
send_head567net/ipv4/tcp_input.cif (sk->send_head == NULL) 
send_head569net/ipv4/tcp_input.csk->send_head = skb;
send_head658net/ipv4/tcp_input.cif (sk->send_tail == NULL || sk->send_head == NULL) 
send_head660net/ipv4/tcp_input.csk->send_head = NULL;
send_head773net/ipv4/tcp_input.cstruct sk_buff * skb = sk->send_head;
send_head797net/ipv4/tcp_input.cif ((sk->send_head = skb->link3) == NULL)
send_head867net/ipv4/tcp_input.csk->send_head == NULL &&
send_head910net/ipv4/tcp_input.cif (sk->send_head || !skb_queue_empty(&sk->write_queue)) {
send_head930net/ipv4/tcp_input.c&& sk->send_head == NULL) 
send_head1046net/ipv4/tcp_input.cif (((!flag) || (flag&4)) && sk->send_head != NULL &&
send_head1049net/ipv4/tcp_input.c(sk->send_head->when + sk->rto < jiffies))) 
send_head1051net/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;