From 6622402a72580afee68e961e37020894dedbecb6 Mon Sep 17 00:00:00 2001
From: Emil Tantilov <emil.s.tantilov@intel.com>
Date: Sat, 8 Nov 2014 01:39:51 +0000
Subject: [PATCH] ixgbevf: compare total_rx_packets and budget in
 ixgbevf_clean_rx_irq

total_rx_packets is the number of packets we had cleaned, and budget is
the total number of packets that we could clean per poll. Instead of
altering both of these values we can save ourselves one write to memory by
just comparing total_rx_packets to the budget and as long as we are less
than budget we continue cleaning.

Also change the do{}while logic to while{} in order to avoid processing
packets when budget is 0.

CC: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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