[ofa-general] Re: [PATCH 0/3] ib/ipoib: Enable IPoIB-UD 4K MTU support

[Shirley Ma]

Hello Roland,

> So how about the following?  When using a UD MTU of 4096 with a page
> size of 4096, allocate an skb of size 44 for the GRH and ethertype,
> and then allocate a single page for the fragment list.  This means
> that the IP packet will start nicely 16-byte aligned for free, and all
> the bookkeeping is very simple.

This method would have condition check anywhere and the code will be
more complicated than this implementation.

Thanks
Shirley Ma
IBM Linux Technology Center
15300 SW Koll Parkway
Beaverton, OR 97006-6063
Phone(Fax): (503) 578-7638
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