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Re: [lwip-users] recv ok.. send is super slow
From: |
Kieran Mansley |
Subject: |
Re: [lwip-users] recv ok.. send is super slow |
Date: |
Tue, 13 May 2008 15:49:04 +0100 |
On Tue, 2008-05-13 at 10:24 -0400, Rishi Khan wrote:
> > Most likely Linux is doing segmentation offload to your NIC. i.e.
> > passing a larger than MTU socket buffer to the NIC, which then
> > fragments
> > it into MTU sized chunks. This is a pretty standard feature in modern
> > NICs to reduce the overheads on the network stack.
>
> I guess I could do the same?
If you're writing a driver to work with the Linux TCP/IP stack, yes. If
you're writing a driver to work with lwIP, not without some changes.
lwIP doesn't currently support segmentation offload.
Kieran