From: Roland Dreier <rdreier@xxxxxxxxx> Date: Wed, 13 Aug 2008 16:03:15 -0700 > OK, I admit you could make something work -- add hooks for the low-level > driver to ask the iSCSI initiator where PDU boundaries are so it can > resync when something is evicted from the flow cache, have the initiator > format its tags in a special way to encode placement data, etc, etc. > The scheme does bring to mind Alan's earlier comment about pigs and > propulsion, though. There would need to be _NO_ hooks into the iSCSI initiator at all. The card would land the block I/O data onto the necessary page boundaries and the iSCSI code would just be able to thus use the pages directly and as-is. It would look perfectly like normal TCP receive traffic. No hooks, no special cases, nothing like that. > In any case, as I said in the part of my email that you snipped, the > real issue is not designing hypothetical hardware, but deciding how to > support the Chelsio, Broadcom, etc hardware that exists today. The same like we support TOE hardware that exists today. That is, we don't. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
