Re: [ECOS] ecos with lwip and 2 interfaces

[Simon Kallweit <simon dot kallweit at intefo dot ch>]

Mandeep Sandhu wrote:
> Hi All,
>
> I've been running my application with Simon's recent port of lwIP
> (1.3.1) with ecos with the linux synthetic target.
>
> Things have been running fine with the app only using 1 net i/f, i.e
> et0. et0 maps to my linux tap device.
>
> synth_device ethernet {
>    eth0 ethertap tap0
> }
>
> Now I need to use a second interface. So 'et1' will map to the real
> eth0 on my PC. For this I modified my tdf file as such:
>
> synth_device ethernet {
>    eth0 ethertap tap0
>    eth1 real eth0
> }
>
> In the lwIP config, I've enabled "eth1".
>
> However, in the app a call to cyg_lwip_sequential_init() only
> initializes et0 and I don't see any init for et1. I've tried using
> both, a static as well as DHCP IP addr for it. But that does not help.
>
> Has anybody used to 2 interfaces with the recent port of lwIP? Is
> there anything else that I need to do, either in configuration or in
> my app?

I have not really tested with multiple interfaces myself. But it seems 
to me that you did not enable the second synth eth device 
(CYGVAR_DEVS_ETH_ECOSYNTH_ETH1) in your configuration. Please make sure 
that you have two synth eth devices configured and report back if it 
still does not work.

Simon

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