[ofa-general] Re: InfiniBand/RDMA merge plans for 2.6.24
Roland Dreier
rdreier at cisco.com
Fri Sep 14 09:09:13 PDT 2007
> The patch is just needed to pick up broadcast MTU size instead of hard
> coding 2K right now. SKB allocation shouldn't be different with Ethernet
> Jambo Frame and IPoIB-CM which 64K MTU. I don't understand why it's
> different. Could you please explain this?
It's exactly the same problem as ethernet jumbo frames. A web search
for '"order 1" failure e1000' might be interesting.
IPoIB CM handles this properly by gathering together single pages in
skbs' fragment lists.
- R.
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