From abe1c3638ccf8b68536afb52b111f6ad46d1cf71 Mon Sep 17 00:00:00 2001
From: Nick Nunley <nicholasx.d.nunley@intel.com>
Date: Wed, 17 Feb 2010 01:03:19 +0000
Subject: [PATCH] igb: cap interrupts at 20K per queue when in itr mode 3

In order to maintain similar performance between MSI-X and
legacy/MSI interrupts, this patch reduces the number of interrupts
when receiving small packets to 20K when in interrupt throttle
rate mode 3.

Signed-off-by: Nicholas Nunley <nicholasx.d.nunley@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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