On 02/25/2013 02:08 AM, Peter Krempa wrote: > On 02/22/13 19:20, Eric Blake wrote: >> On 02/21/2013 07:47 AM, Peter Krempa wrote: >>> This patch documents XML elements used for (basic) support of virtual >>> RNG devices. >>> >>> >>> For the slightly more advanced EGD backend: >>> <devices> >>> <rng model='virtio'> >>> <backend model='egd' type='udp'> >>> <!-- this is a definition of a character device --> >>> <source mode='bind' service='1234'/> >>> <source mode='connect' host='1.2.3.4' service='1234'/> >>> <!-- or other valid character device configuration --> >> >> Do we really want two <source> in a single <backend> in the example, or >> would it be easier to show multiple <rng> devices, one for each type of >> backend? > > That actually is valid for the character device backends. The UDP > backend has to use two separate sources for bi-directional > communication. The definition of that source type is declared as a type > in our RNG schema an I merely reused that. Oh, I didn't realize that. Do we want to ENFORCE that there are two <source> elements present then? Or can we always provide a sane default when the user provides only 0 or 1 source? Depending on that answer, it might be worth additional documentation on why two <source> elements are present, as well as mentioning that order is significant in how they are listed. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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