[lkml]   [2003]   [Jan]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Linux iSCSI Initiator, OpenSource (fwd) (Re: Gauntlet Set NOW!)
On Tue, Jan 07, 2003 at 01:39:38PM +1300, Andrew McGregor wrote:
> Ethernet and TCP were both designed to be cheap to evaluate, not the
> absolute last word in integrity. There is a move underway to provide an
> optional stronger TCP digest for IPv6, and if used with that then there is
> no need for the iSCSI digest. Otherwise, well, play dice with the data.
> Loaded in your favour, but still dice.

Ethernet's checksum is a standard crc32, with all the usual good
properties and, at least on FE and lower, 1500bytes max of payload.
So it's quite reasonable. TCP's checksum, though, is crap.

I'm not entirely sure how crc32 would behave on jumbo frames.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:32    [from the cache]
©2003-2014 Jasper Spaans. hosted at Digital Ocean