On Mon, Sep 15, 2014 at 7:58 PM, Jason Gunthorpe <jguntho...@obsidianresearch.com> wrote: > To do this, you need to transfer the offload state across the wire, so > on receive you inject the packet with the proper tag that the csum is > not computed but ready for offload. A node receiving a packet like > this would have to compute the csum before sending it onwards, so no, > if done properly it will not break gateways. > > All the core infrastructure is there, all the virtualization drivers > work like this - the guest side does not compute the csum, and the > hyperviser side receives the packet with that flag, and the csum > ultimately is offloaded to the physical NIC. Look at the xen net > driver for an example.
But is done on the xmitting hypervisor, isn't it? if this is the case, I don't see the similarity to the IPoIB CM case. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
