In normal operation, the remote client responds with an ack packet that moves the half-open connection to fully open.
在正常操作中，远程客户机用一个ACK数据包进行响应，这会使半开的连接转换为全开的。
2
The operation of this function is dependent upon the underlying hardware, but commonly the packet described by the sk_buff is moved to a hardware ring or queue.
这个函数的操作取决于底层硬件，但是通常sk _ buff所描述的报文都会被移动到硬件环或队列中。
3
Cellular Digital packet data (CDPD) network is one of the mobile packet data technologies, with rather lower cost of network laying, operation and lower service fees and worthy of popularization.