The blkfront code sends xend a "driver status up" message in
wait_for_blkif. Xend uses this as a stimulus to notify the blkfront
code about available block devices.
On Tue, 2005-05-03 at 11:23 +0200, H?ard Bjerke wrote:> I have some trouble understanding the interface between the blkfront and
blkback drivers. When a dom1 is created, after xlblk_init() is called, the
wait_for_blkif() routine waits for a connection of some kind until it times out
with a "xen_blk: Timeout connecting to device!". Is this a connection
from Xend, Xen or dom0 it''s waiting for? How is this connection timed
to occur exactly when wait_for_blkif() is looping?
>
> Hvard
>
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