[ECOS] How to run lwip on 2 network interfaces?

[Bahadir Balban]

Hi there,

I've got eCos ARM E7T template + LWIP + network drivers (IO_ETH_DRIVERS) + 
KS32C5000 ethernet driver compiled into libtarget.a

1st Question: How to register a network interface as the networkif for TCP/IP.

2nd: Question:
I would like to run LWIP both on the serial port with SLIP and on the ethernet 
interface. I know that LWIP can be SLIP enabled but perhaps this wouldn't be 
enough as the serial device is not registered as the network device in eCos.

On my linux host, I can easily add my /dev/ttyS0 serial device as a network 
interface and as well enable SLIP by typing:

% slattach -p slip -s 38400 /dev/ttyS0 &

% ifconfig sl0 192.68.1.221 pointopoint 192.68.1.222 netmask 255.255.255.0

and the routing table configured just as I wanted - sl0 and eth0 work together 
safely:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.68.1.0      *               255.255.255.0   U     0      0        0 sl0
155.245.112.0   *               255.255.240.0   U     0      0        0 eth0
127.0.0.0       *               255.0.0.0       U     0      0        0 lo
default         safw0.essex.ac. 0.0.0.0         UG    0      0  

I don't know the way to achieve the same thing on my ARM target with eCos, 
Could you help me with this please? I have seen posts about 2 ethernet ports 
being enabled simultaneously. How is this achieved? Do I need to write a 
program with kernel calls?

Thank you very much,
Bahadir


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