怎么在ZC702上的两个cpus上使用lwip

我试图在ZC702板的cpu0和cpu1上使用lwip。
我从xapp1079开始，运行，添加了一些处理器间通信并运行定时器。
到现在为止还挺好。
我使用microBlaze在以前的项目中使用过lwip。
在此期间，我开发了一个相当广泛的子程序库，以便于创建套接字，发送和接收消息，检测挂断等。该库使用RAW套接字。
我正在为ZC702项目使用相同的库。
两个CPU都通过lwip初始化，成功完成PHY自动协商。
首先初始化Cpu0然后初始化cpu1。
两个CPU上的链路速度报告为1000。
下一步，以及失败的部分，正在尝试在cpu0上创建TCP套接字连接（双向流量，我是客户端）。
我有一个指定在连接完成时调用的回调，但回调永远不会被执行。
Wireshark告诉我，没有任何东西在线上。
大约16分钟后，lwip重复发出此消息：包丢弃，没有空格。
Cpu1将打开一个UDP（仅输出）套接字到不同于cpu0的IP地址。
我不知道在这一点上去哪里。
我甚至想做什么？
microBlaze项目也做到了这一点，虽然它是1个cpu处理两个套接字。
感谢您的任何帮助或建议。
史蒂夫



以下为原文

I am trying to use lwip on both cpu0 and cpu1 of a ZC702 board.

I started with xapp1079, got that running, added some interprocessor communication and have timers running.
So far, so good.

I have used lwip on a previous project using a microBlaze.
During that time,  I developed a fairly extensive library of subroutines to facilitate creating sockets, sending and receiving messages, detecting hangups, etc.  The library uses RAW sockets.
I am using the same library for the ZC702 project.

Both CPUs get through lwip initialization, successfully completing PHY autonegotiation.
Cpu0 initializes first and then cpu1.
Link speed is reported to be 1000 on both CPUs.

The next step, and the part that is failing, is trying to create a TCP socket connection (bidirectional traffic, I'm the client) on cpu0.
I've got a callback specified to be called when the connection completes, but the callback never gets executed.
Wireshark tells me that nothing is getting on the wire.

After approximately 16 minutes, lwip gives this message repeatedly: pack dropped, no space.

Cpu1 will be opening a UDP (output only) socket to a different IP address than cpu0.


I'm not sure where to go at this point.
Is what I'm trying to do even possible?  The microBlaze project also did this, although it was 1 cpu handling both sockets.

Thanks for any help or suggestions.
Steve