taglinefilesource code
sock_wspace363include/net/sock.hextern unsigned long    sock_wspace(struct sock *sk);
sock_wspace221net/core/datagram.cif (sk->prot && sock_wspace(sk) >= MIN_WRITE_SPACE)
sock_wspace1269net/ipv4/tcp.cif (sock_wspace(sk) < sk->mtu+128+sk->prot->max_header)
sock_wspace1322net/ipv4/tcp.camount = sock_wspace(sk);
sock_wspace454net/ipv4/udp.camount = sock_wspace(sk);