From patchwork Sat Feb 16 08:33:31 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kirsher, Jeffrey T" X-Patchwork-Id: 220940 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id DAB012C008D for ; Sat, 16 Feb 2013 19:33:59 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752596Ab3BPIdx (ORCPT ); Sat, 16 Feb 2013 03:33:53 -0500 Received: from mga09.intel.com ([134.134.136.24]:14939 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752489Ab3BPIds (ORCPT ); Sat, 16 Feb 2013 03:33:48 -0500 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga102.jf.intel.com with ESMTP; 16 Feb 2013 00:32:26 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.84,678,1355126400"; d="scan'208";a="263487778" Received: from unknown (HELO jtkirshe-mobl.amr.corp.intel.com) ([10.255.12.150]) by orsmga001.jf.intel.com with ESMTP; 16 Feb 2013 00:33:44 -0800 From: Jeff Kirsher To: davem@davemloft.net Cc: Alexander Duyck , netdev@vger.kernel.org, gospo@redhat.com, sassmann@redhat.com, Ben Hutchings , Jeff Kirsher Subject: [net-next 10/15] ixgbe: Add support for set_channels ethtool operation Date: Sat, 16 Feb 2013 00:33:31 -0800 Message-Id: <1361003616-3422-11-git-send-email-jeffrey.t.kirsher@intel.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1361003616-3422-1-git-send-email-jeffrey.t.kirsher@intel.com> References: <1361003616-3422-1-git-send-email-jeffrey.t.kirsher@intel.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Alexander Duyck This change adds support for the ethtool set_channels operation. Since the ixgbe driver has to support DCB as well as the other modes the assumption I made here is that the number of channels in DCB modes refers to the number of queues per traffic class, not the number of queues total. CC: Ben Hutchings Signed-off-by: Alexander Duyck Tested-by: Phil Schmitt Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 38 ++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c index cba27c6..7349a8b 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c @@ -2802,6 +2802,43 @@ static void ixgbe_get_channels(struct net_device *dev, ch->combined_count = adapter->ring_feature[RING_F_FDIR].indices; } +static int ixgbe_set_channels(struct net_device *dev, + struct ethtool_channels *ch) +{ + struct ixgbe_adapter *adapter = netdev_priv(dev); + unsigned int count = ch->combined_count; + + /* verify they are not requesting separate vectors */ + if (!count || ch->rx_count || ch->tx_count) + return -EINVAL; + + /* verify other_count has not changed */ + if (ch->other_count != NON_Q_VECTORS) + return -EINVAL; + + /* verify the number of channels does not exceed hardware limits */ + if (count > ixgbe_max_channels(adapter)) + return -EINVAL; + + /* update feature limits from largest to smallest supported values */ + adapter->ring_feature[RING_F_FDIR].limit = count; + + /* cap RSS limit at 16 */ + if (count > IXGBE_MAX_RSS_INDICES) + count = IXGBE_MAX_RSS_INDICES; + adapter->ring_feature[RING_F_RSS].limit = count; + +#ifdef IXGBE_FCOE + /* cap FCoE limit at 8 */ + if (count > IXGBE_FCRETA_SIZE) + count = IXGBE_FCRETA_SIZE; + adapter->ring_feature[RING_F_FCOE].limit = count; + +#endif + /* use setup TC to update any traffic class queue mapping */ + return ixgbe_setup_tc(dev, netdev_get_num_tc(dev)); +} + static const struct ethtool_ops ixgbe_ethtool_ops = { .get_settings = ixgbe_get_settings, .set_settings = ixgbe_set_settings, @@ -2831,6 +2868,7 @@ static const struct ethtool_ops ixgbe_ethtool_ops = { .get_rxnfc = ixgbe_get_rxnfc, .set_rxnfc = ixgbe_set_rxnfc, .get_channels = ixgbe_get_channels, + .set_channels = ixgbe_set_channels, .get_ts_info = ixgbe_get_ts_info, };