[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [lwip-users] porting lwip to propreitary os
From: |
Giovambattista Pulcini |
Subject: |
Re: [lwip-users] porting lwip to propreitary os |
Date: |
Tue, 20 May 2003 14:15:01 +0200 |
I have done the same for a Motorola MPC860T with no OS at all. I just built
it on the top of the OS abstraction layer provided in the LwIP. Basically I
had just to implement timers. Other minor changes were needed because of the
lack of multi-threading in my event-driven environment, so I had the need of
making all the calls non-blocking.
Anyway, the OS abstraction layer provided with LwIP allows you to port it
with ease on any "reasonable" hardware/OS.
As of 0.5.3 version there were some issue when an ACK in a TCP connection
eventually gets lost, if I remember well.
On a 40MHz 860 with a zero-copying Ethernet driver I was able to sustain a
few less than 6 MB/s on a 100 Mbps link.
In real-time environments usually there are some requirements about the
determinism of the transmission times; on an Ethernet chunk this determinism
is meaningfull only in a probabilistic context. Moreover there is no upper
limit for the time the packet will wait in the send queue of the Ethernet
controller.
Regards,
GP
> Dear all,
>
> I want to port lwip to real time propreitary os. My os runs over
> motorola's PowerPC 8260
> processor.
> Does it require major changes to
> be done in stack? In general ,what sort of changes are required to
> be done ??
> Is there any os dependent code ?? Does the stack run reliably under
> haeavy load
> conditions. Can i use it in REAL time environment??
>
> thanx in advance for any help..
>
> regards,
> rahul
>
>
>
>
>
> _______________________________________________
> lwip-users mailing list
> address@hidden
> http://mail.nongnu.org/mailman/listinfo/lwip-users