On Wed, 2007-10-31 at 08:16 -0400, Jeff Garzik wrote:There is a large corporate demand for this, which is why I'm doing this. The typical usage scenarios are: - cluster/blades, where having local disks is a cost issue (maintenance of failures, heat, etc) - virtualisation, where dumping the storage on a networked storage unit makes for trivial migration and what not.. But please, people who want this (I'm sure some of you are reading) do speak up. I'm just the motivated corporate drone implementing the feature :-) se fixed One issue that comes to mind is how to ensure we'd still overflow the IP-reassembly buffers. Currently those are managed on the number of bytes present, not the number of fragments. One of the goals of my approach was to not rewrite the network subsystem to accomodate this feature (and I hope I succeeded). Note that being bounded only comes from dropping most packets before trying them to a socket. That is the crucial part of the RX path, to receive all packets from the NIC (regardless their size) but to not pass them on to the network stack - unless they belong to a 'special' socket that promises undelayed processing. Thanks for these ideas, I'll look into them.
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