From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next 2/6] e1000e: Enable DMA Burst Mode on 82574 by default. Date: Fri, 27 Apr 2012 02:36:49 -0700 Message-ID: <1335519413-1892-3-git-send-email-jeffrey.t.kirsher@intel.com> References: <1335519413-1892-1-git-send-email-jeffrey.t.kirsher@intel.com> Cc: Matthew Vick , netdev@vger.kernel.org, gospo@redhat.com, sassmann@redhat.com, Jeff Kirsher To: davem@davemloft.net Return-path: Received: from mga11.intel.com ([192.55.52.93]:58719 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759925Ab2D0Jg4 (ORCPT ); Fri, 27 Apr 2012 05:36:56 -0400 In-Reply-To: <1335519413-1892-1-git-send-email-jeffrey.t.kirsher@intel.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Matthew Vick Performance testing has shown that enabling DMA burst on 82574 improves performance on small packets, so enable it by default. Signed-off-by: Matthew Vick Tested-by: Jeff Pieper Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/82571.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c index 609c18c..d0ea316 100644 --- a/drivers/net/ethernet/intel/e1000e/82571.c +++ b/drivers/net/ethernet/intel/e1000e/82571.c @@ -2062,7 +2062,8 @@ const struct e1000_info e1000_82574_info = { | FLAG_HAS_CTRLEXT_ON_LOAD, .flags2 = FLAG2_CHECK_PHY_HANG | FLAG2_DISABLE_ASPM_L0S - | FLAG2_NO_DISABLE_RX, + | FLAG2_NO_DISABLE_RX + | FLAG2_DMA_BURST, .pba = 32, .max_hw_frame_size = DEFAULT_JUMBO, .get_variants = e1000_get_variants_82571, -- 1.7.7.6