[ECOS] lwip eth doubt........

[ECOS] lwip eth doubt........

[rpai]

  hello...

         we are in way of creating a firewall application... we are doing
with lwip stack..   .as there is no routing support we are way to
make it..
     we are unable to find , how the 2 eths are to be initalized as done
in bsd ..

     can u tell me is there any flag to b removed to get 2 eths initalized
.. this came into mind when we were looking this function in init.c
file in net/lwip/src directory...

 the code is as........
*************************
static void
init_hw_drivers(void)
{

  cyg_netdevtab_entry_t *t;

  for (t = &__NETDEVTAB__[0]; t != &__NETDEVTAB_END__; t++) {
        diag_printf("H/W device name:%s\n",t->name);
  if (t->init(t)) {
      t->status = CYG_NETDEVTAB_STATUS_AVAIL;
    } else {
      // What to do if device init fails?
      t->status = 0;            // Device not [currently] available
    }
  }

}

*************8
this loop is executing only once.....
can u tlell me the logic behind and wht to do to get it move 2 times to
detect eth1 also...

   if this is also over the routing part my project will b over....

  some doucmentation also will b usefule to us

plze....... do help..

    Regards
        Pai





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[ECOS] Re: lwip eth doubt........

[Jani Monoses]

> 
>  the code is as........
> *************************
> static void
> init_hw_drivers(void)
> {
> 
>   cyg_netdevtab_entry_t *t;
> 
>   for (t = &__NETDEVTAB__[0]; t != &__NETDEVTAB_END__; t++) {
>         diag_printf("H/W device name:%s\n",t->name);
>   if (t->init(t)) {
>       t->status = CYG_NETDEVTAB_STATUS_AVAIL;
>     } else {
>       // What to do if device init fails?
>       t->status = 0;            // Device not [currently] available
>     }
>   }
> 

Do you have two NETDEVTAB_ENTRY-s in you platforms devs/eth sources?
Another point is that lwip has IP_ADDRs configurable in the CDL but it assumes there's one 
interface only
You'll have to modify the lwip_set_addr() function to cope with multiple interfaces.
When it works send a patch :)

There no documentation other than the code, but make sure you read io/eth/current/src/lwip 
as well to understand how initialization takes place

Jani


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