On Tue, Sep 16, 2014 at 09:47:43AM +0300, Or Gerlitz wrote:
>
> On the post you wrote "[...] resolve the issue by removing the physically
> contiguous memory requirement using Scatter/Gather feature that exists in
> Linux".
>
> I assume you refer to NETIF_F_SG, right? so your claim is that Linux will not
> effectively use the driver ability to serve SG skbs unless the driver also
> advertizes (say) NETIF_F_IP_CSUM?!
Or,
Correct me if i'm wrong here but i didn't saw any handling of fragmented skb in
driver.
The current implementation dma map only skb->data where in fragmented skb there
is a need to dma map all frags, right?
>
> I thought it's the other way around -- that is supporting checksum offloading
> is useless unless SG is supported. Can you provide pointer into the network
> stack code/documentation that supports your claim?
> Or.
>
>
>
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