[lwip-users] ethernet driver overloaded?

[Alexander Schulz]

hi,

 

in a current project I am trying to send out a relatively large consecutive data stream

using tcp/ip.

 

I can see that data is handed over to the ethernet driver via the registered function

at “linkoutput”.

what I am missing is the evaluation of a return value indicating that the underlying ethernet

driver is still busy sending. I see that “linkoutput”’s retval goes up to “tcp_output_segment()”

but here, the retval of “ip_output()” is just discarded.

how is the overload at the ethernet driver prevented?

 

maybe relying on tcp’s recover mechanism could cover this up but I’d like to prefer

avoiding stream errors right in the first place.

maybe I just overlook something…

 

b.-regards.

 

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