[Click] ToDevice Patch

[Roman Chertov]

Hello,
	This is a patch for ToDevice.  ToDevice element schedules run_task, and 
in the run_task it attempts to pull packets from upstream.  If the just 
pulled packet cannot be queued up on the device's descriptor list, the 
packet get dropped.  I think this is not a desirable behavior.  I 
changed it so that the packet gets saved and then on next run_task, 
another attempt is made to queue it onto the device instead of pulling 
another packet from upstream.  This way, packet drops would occur only 
at the queue element before ToDevice. (which I think is more correct 
than dropping either inside the Queue or ToDevice).

Roman Chertov
-------------- next part --------------
A non-text attachment was scrubbed...
Name: todevice.patch
Type: text/x-patch
Size: 2532 bytes
Desc: not available
Url : https://pdos.csail.mit.edu/pipermail/click/attachments/20070308/01e0876b/todevice.bin