Messages in this thread | | | From | Roland Dreier <> | Subject | Re: [RFC][PATCH 1/1] cxgb3i: cxgb3 iSCSI initiator | Date | Wed, 30 Jul 2008 14:35:51 -0700 |
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> * From a networking standpoint, our main concern becomes how this > interacts with the networking stack. In particular, I'm concerned > based on reading the source that this driver uses "TCP port stealing" > rather than using a totally separate MAC address (and IP). > > Stealing a TCP port on an IP/interface already assigned is a common > solution in this space, but also a flawed one. Precisely because the > kernel and applications are unaware of this "special, magic TCP port" > you open the potential for application problems that are very > difficult for an admin to diagnose based on observed behavior.
That's true, but using a separate MAC and IP opens up a bunch of other operational problems. I don't think the right answer for iSCSI offload is clear yet.
- R.
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