taglinefilesource code
HEADER_SIZE1890net/inet/tcp.cnewsk->mtu = 576 - HEADER_SIZE;
HEADER_SIZE1892net/inet/tcp.cnewsk->mtu = min(newsk->mtu, dev->mtu - HEADER_SIZE);
HEADER_SIZE2926net/inet/tcp.csk->mtu = 576 - HEADER_SIZE;
HEADER_SIZE2928net/inet/tcp.csk->mtu = min(sk->mtu, dev->mtu - HEADER_SIZE);