David Edmondson wrote: > * [EMAIL PROTECTED] [2008-01-14 03:52:22] > >> David Edmondson wrote: >> >>> * [EMAIL PROTECTED] [2008-01-10 13:33:54] >>> >>>> It might be nice if IP were a little more graceful in handling ref'd >>>> dblks, but that probably would be a lot more complicated. >>>> >>> I'd be very happy if IP stopped modifying inbound IP headers in-place >>> (it forced some awkwardness in the Xen drivers). >>> >> What type of change does IP do that causes Xen problems? >> > > It byte-swaps fields in the headers. Given that the preference of the > guest domain is to provide a read-only mapping to pages it loans to > the IO domain, any attempt to modify packets is problematic. >
And at a guess, we don't have a flag in the mblk/dblk that says the data is read-only (or something similar)? (At least I can't see any evidence of this in stream.h) Would doing something like that help (if we aren't already) or do you think it is likely to just move the problem? Darren _______________________________________________ networking-discuss mailing list [email protected]
