There's a chance that the receive buffers are being consumed at the same
rate as they are being replenished in ibmveth_replenish_task()... 
Meanwhile, the calls to schedule_replenishing() from ibmveth_poll() won't
schedule another replenishing cycle (because the not_replenishing flag is
zero), starving the buffers and making the adapter unable to receive
packets unless the module is reloaded...  Here's a small patch that will
fix it by scheduling another replenishing task after toggling the
not_replenishing flag.
Signed-Off-By: Santiago Leon <santil@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>