From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 7D0B658DD for ; Fri, 5 Jun 2015 07:22:33 +0200 (CEST) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP; 04 Jun 2015 22:22:32 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,556,1427785200"; d="scan'208";a="721159532" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by fmsmga001.fm.intel.com with ESMTP; 04 Jun 2015 22:22:32 -0700 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id t555MUWT032621; Fri, 5 Jun 2015 13:22:30 +0800 Received: from shecgisg004.sh.intel.com (localhost [127.0.0.1]) by shecgisg004.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id t555MRnn024372; Fri, 5 Jun 2015 13:22:29 +0800 Received: (from wenzhuol@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id t555MR2w024368; Fri, 5 Jun 2015 13:22:27 +0800 From: Wenzhuo Lu To: dev@dpdk.org Date: Fri, 5 Jun 2015 13:21:44 +0800 Message-Id: <1433481718-24253-13-git-send-email-wenzhuo.lu@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1433481718-24253-1-git-send-email-wenzhuo.lu@intel.com> References: <1433481718-24253-1-git-send-email-wenzhuo.lu@intel.com> Subject: [dpdk-dev] [PATCH 12/26] ixgbe/base: disable FEC(Forward Error Correction) to save power X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Jun 2015 05:22:34 -0000 The FEC feature can improve BER(Bit Error Rate) but uses more power to do so. It also cannot be used with EEE(Energy Efficient Ethernet). EEE is an important feature, and we have no known BER issues, so FEC is not needed. Signed-off-by: Wenzhuo Lu --- drivers/net/ixgbe/base/ixgbe_x550.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ixgbe/base/ixgbe_x550.c b/drivers/net/ixgbe/base/ixgbe_x550.c index 319aa0d..e6d0a9f 100644 --- a/drivers/net/ixgbe/base/ixgbe_x550.c +++ b/drivers/net/ixgbe/base/ixgbe_x550.c @@ -1383,8 +1383,8 @@ s32 ixgbe_setup_kr_x550em(struct ixgbe_hw *hw) return status; reg_val |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_ENABLE; - reg_val |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_FEC_REQ; - reg_val |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_CAP_FEC; + reg_val &= ~(IXGBE_KRM_LINK_CTRL_1_TETH_AN_FEC_REQ | + IXGBE_KRM_LINK_CTRL_1_TETH_AN_CAP_FEC); reg_val &= ~(IXGBE_KRM_LINK_CTRL_1_TETH_AN_CAP_KR | IXGBE_KRM_LINK_CTRL_1_TETH_AN_CAP_KX); -- 1.9.3