skb_is_tcp_pure_ack 2029 net/core/sock.c 	if (skb_is_tcp_pure_ack(skb))
skb_is_tcp_pure_ack 1100 net/ipv4/tcp_output.c 	skb->destructor = skb_is_tcp_pure_ack(skb) ? __sock_wfree : tcp_wfree;