Re: [lwip-users] [Issue] TCP fragmentation over PPP - fragments are lost in LwIP if data is queued for sending

[Sylvain Rochet]

Hi Simon,

On Thu, Nov 24, 2016 at 09:52:42PM +0100, sg wrote:
> 
> ⁣Well, on a system with PPP *and* standard ETH, you obviously can't 
> wait for the serial interface to transmit before serving ETH?

That's a known limitation which was discussed at length before. A slow 
interface is going to slow down the whole stack. However a large 
software fifo on uart tx might mitigate that.

Sylvain

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