On Fri, Oct 16, 2015 at 5:24 AM, sai pavan <[email protected]> wrote: > Hi Jason, > > On Fri, Oct 16, 2015 at 1:07 PM, Jason Wang <[email protected]> wrote: >> >> >> On 10/16/2015 01:15 PM, sai pavan wrote: >>> +Peter >>> >>> Hi Jason, >>> >>> On Thu, Oct 15, 2015 at 2:44 PM, Jason Wang <[email protected]> wrote: >>>> >>>> On 10/15/2015 02:36 PM, sai pavan wrote: >>>>> Hi, >>>>> >>>>> I am debugging an issue, where through one of the nics I am not able >>>>> to connect to dtcp. >>>>> So to dig in deep, i was going thought net.c files, and ended-up >>>>> understanding little. >>>>> >>>>> So can i know how does a netdev connects to nic. >>>>> >>>>> nd_table[] has some pointers for netdev devices. Where are this >>>>> actually instantiated ? I am missing that part of the code. >>>>> >>>>> How do the netdevs and nic's have 1-1 connections. >>>> You may want to have a look at set_netdev(). >>> Thanks this helped to see more regarding netdev. >>> >>> one more question, there are 4 Ethernet Controllers in the soc im working on >>> https://github.com/qemu/qemu/blob/master/hw/arm/xlnx-zynqmp.c#L223 >>> >>> Each having configure nic and netdev internally. But only one can >>> automatically connect to dhcp. Each one is assigned default mac >>> address, Do each of the mac needs to be pre-registered with internal >>> dhcp.? >> >> I think this is because if you don't specify any net clients on cli, >> qemu will use default network configuration that has a hub with two >> ports, first ports is connected to a nic and second port were connected >> to userspace network >> (http://wiki.qemu.org/Documentation/Networking#User_Networking_.28SLIRP.29) >> which implements dhcp. You can see the network topology through "info >> networks" commands. >> >> E.g if you want to let all nics to be connected to the user networking, >> you may want to use: >> >> -net nic -net nic -net nic -net nic -net user >>
Is there a long form of this CLI that does not rely on positional arguments? Regards, Peter >> in your cli. > Cool, This worked. Thanks !! > > Another question, is a way we can connect a particular device to hub, > not connecting all ? > > Thanks, > Sai Pavan >> >>> >>> Regards, >>> Sai Pavan >>> >>>>> And if my SOC has more than 1 sysbus type ethernet chips. How can i >>>>> connect each one of them from command line ? >>>> You can do this by using hubport as nic's peer e.g: >>>> >>>> -netdev hubport,id=port0,hubid=hubid -device e1000,netdev=port0 >>>> >>>>> Regards, >>>>> Sai Pavan >>
