Re: Networking in Qemu with Xilinx-zcu102 machine

[Thomas Huth]

On 08/06/2021 19.09, asif siddiqui wrote:
> Hello All,
>
> I am working on the networking between my host OS linux and guest OS 
> QNX(Running on top of qemu). I have an interface xzynq0 in my guest OS with 
> a static/dynamic IP address.
>
> I am executing the qemu command as follows -
>
> qemu-system-aarch64 -M xlnx-zcu102 -m 8G -serial mon:stdio -display none 
> -device loader,file=QNX_IFS.bin,cpu-num=0 -netdev 
> bridge,br=virbr0,id=net0,helper=/usr/lib/qemu/qemu-bridge-helper -nographic 
>   -global xlnx,zynqmp-boot.cpu-num=0 -global xlnx,zynqmp-boot.use-pmufw=true

Looking at your command line, it seems like you don't connect the "net0" 
netdev to anything on the guest side. -netdev only configures the host side 
network interface, but not the network adapter in the guest. See also:

 https://www.qemu.org/2018/05/31/nic-parameter/

Thus you might want to try "-nic" instead of "-netdev", but as far as I can 
see, the xlnx-zcu102 does not have any NIC on board by default? Maybe you 
could attach a virtio-net device with "-device", but I'm not sure whether 
that machine supports such devices...

 Thomas