From: Simon Kallweit <simon.kallweit@intefo.ch>
To: Mandeep Sandhu <mandeepsandhu.chd@gmail.com>
Cc: ecos-discuss <ecos-discuss@ecos.sourceware.org>
Subject: Re: [ECOS] ecos with lwip and 2 interfaces
Date: Wed, 23 Sep 2009 12:48:00 -0000 [thread overview]
Message-ID: <4ABA192E.3020109@intefo.ch> (raw)
In-Reply-To: <b18c5f790909230412k7f922ab9l18dfc80de94f71fe@mail.gmail.com>
Mandeep Sandhu wrote:
> You're right Simon. Enabling the second interface there made things
> work (to some extent).
>
> However, I'm facing a new problem now.
>
> Previously I was using only a single interface (the Linux tap0
> device). I have implemented a DHCP server which was working fine until
> I enabled the SECOND INTERFACE.
>
> Now, my socket writes on the first interface (the tap0 interface) have
> started failing! That is, without changing _any_ code! :( The return
> value of sendto is coming as '-1' and the error string is set to 'No
> error'. Actually this problem starts even if I don't enable support
> for eth1 in the lwIP config. Just enabling the second interface under
> "Common ethernet support -> Synthetic target ethernet driver" causes
> this problem to surface.
>
> Any clues as to what could be going wrong?
Well, this could be a problem because the default netif was set
incorrectly. Only one netif can be the default netif. Currently the last
initialized ethernet device would be set as default (incorrectly). I
have changed that in the new version, also added 'Default netif' for
loopif and slipif devices and also expanded configurability of ethernet
netifs to 4 devices (previously 2). Now, only the selected netif should
be the default netif. Please test with the new version and see if that
helps:
http://download.westlicht.ch/lwip-20090923.tar.gz
Simon
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next prev parent reply other threads:[~2009-09-23 12:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-21 14:05 Mandeep Sandhu
2009-09-22 7:28 ` Simon Kallweit
2009-09-23 11:12 ` Mandeep Sandhu
2009-09-23 12:48 ` Simon Kallweit [this message]
2009-09-23 13:04 ` Mandeep Sandhu
2009-09-23 13:10 ` Simon Kallweit
2009-09-23 13:21 ` Mandeep Sandhu
2009-09-23 13:29 ` Simon Kallweit
2009-09-23 13:50 ` Mandeep Sandhu
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