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[lwip-users] Re: Writing an ethernet device driver from ethernetif.c

From: Durgaprasad Chivukula
Subject: [lwip-users] Re: Writing an ethernet device driver from ethernetif.c
Date: Thu, 21 Jul 2005 14:42:35 +0200

On 7/21/05, Durgaprasad Chivukula <address@hidden> wrote:
> Hi ,
>  I made a shared library of lwip stack , and  want to use this library
> to use it for an application .I also want to get the ethernet
> functionality included in this library.
> I am in the work of writing the ethernet device driver , and got few
> doubts when I saw the skeleton ethernetif.c ..
> 1. What changes do I need make in the ethernetif.c to fit for my ethernet card
> (my ethernet card is from 3Com  model 3c905B) . I am working under
> Redhat linux 9.0  , 2.4.20-8
> 2. I observed in the skeleton ethernetif.c , that there are some
> functions which are'nt declared anywhere else, are these functions
> device dependent ...??
> the functions like... send data from(q->payload, q->len) , singal that
> packet should be sent(), drop packet () ,   etc.....
 the similar functions I found in tapif.c , I came to know that is the
functionality that should be implemented , can I implement the same
functionality as tapif.c in ethernetif.c tooo..??? I mean to say the
copy & paste of the same implementation and What other changes do I
need to make..inorder to make it compatible to my ethernet card????

> 3.Asssuming  the device driver is ready , can I include this driver in
> my shared library , so that lwip can use ethernet actually , to get
> and put files for my application..?
> Please clarify me in this regard... any kind of suggestions would be
> helpful for me
> Help!!!!!
> Thanks
> Durga Prasad Chivukula

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