Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753026AbYJ2Fkv (ORCPT ); Wed, 29 Oct 2008 01:40:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752136AbYJ2Fkk (ORCPT ); Wed, 29 Oct 2008 01:40:40 -0400 Received: from stargate.chelsio.com ([12.22.49.110]:2554 "EHLO stargate.chelsio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751870AbYJ2Fkk (ORCPT ); Wed, 29 Oct 2008 01:40:40 -0400 From: Divy Le Ray Subject: [PATCH 1/1 2.6.29] cxgb3 - enable lro control through ethtool To: jeff@garzik.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, swise@opengridcomputing.com Date: Tue, 28 Oct 2008 22:40:32 -0700 Message-ID: <20081029054032.20973.32213.stgit@speedy5> User-Agent: StGIT/0.13 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4056 Lines: 134 From: Divy Le Ray Implement ethtool's get_flags and set_flags methods. It enables ethtool to control the LRO settings. Signed-off-by: Divy Le Ray --- drivers/net/cxgb3/cxgb3_main.c | 69 +++++++++++++++++++++++++++++++++------- 1 files changed, 57 insertions(+), 12 deletions(-) diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c index 1ace41a..e1746ee 100644 --- a/drivers/net/cxgb3/cxgb3_main.c +++ b/drivers/net/cxgb3/cxgb3_main.c @@ -494,6 +494,36 @@ static void enable_all_napi(struct adapter *adap) } /** + * set_qset_lro - Turn a queue set's LRO capability on and off + * @dev: the device the qset is attached to + * @qset_idx: the queue set index + * @val: the LRO switch + * + * Sets LRO on or off for a particular queue set. + * the device's features flag is updated to reflect the LRO + * capability when all queues belonging to the device are + * in the same state. + */ +static void set_qset_lro(struct net_device *dev, int qset_idx, int val) +{ + struct port_info *pi = netdev_priv(dev); + struct adapter *adapter = pi->adapter; + int i, lro_on = 1; + + adapter->params.sge.qset[qset_idx].lro = !!val; + adapter->sge.qs[qset_idx].lro_enabled = !!val; + + /* let ethtool report LRO on only if all queues are LRO enabled */ + for (i = pi->first_qset; i < pi->first_qset + pi->nqsets; ++i) + lro_on &= adapter->params.sge.qset[i].lro; + + if (lro_on) + dev->features |= NETIF_F_LRO; + else + dev->features &= ~NETIF_F_LRO; +} + +/** * setup_sge_qsets - configure SGE Tx/Rx/response queues * @adap: the adapter * @@ -516,8 +546,7 @@ static int setup_sge_qsets(struct adapter *adap) pi->qs = &adap->sge.qs[pi->first_qset]; for (j = pi->first_qset; j < pi->first_qset + pi->nqsets; ++j, ++qset_idx) { - if (!pi->rx_csum_offload) - adap->params.sge.qset[qset_idx].lro = 0; + set_qset_lro(dev, qset_idx, pi->rx_csum_offload); err = t3_sge_alloc_qset(adap, qset_idx, 1, (adap->flags & USING_MSIX) ? qset_idx + 1 : irq_idx, @@ -1632,13 +1661,10 @@ static int set_rx_csum(struct net_device *dev, u32 data) p->rx_csum_offload = data; if (!data) { - struct adapter *adap = p->adapter; int i; - for (i = p->first_qset; i < p->first_qset + p->nqsets; i++) { - adap->params.sge.qset[i].lro = 0; - adap->sge.qs[i].lro_enabled = 0; - } + for (i = p->first_qset; i < p->first_qset + p->nqsets; i++) + set_qset_lro(dev, i, 0); } return 0; } @@ -1793,6 +1819,25 @@ static void get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) memset(&wol->sopass, 0, sizeof(wol->sopass)); } +static int cxgb3_set_flags(struct net_device *dev, u32 data) +{ + struct port_info *pi = netdev_priv(dev); + int i; + + if (data & ETH_FLAG_LRO) { + if (!pi->rx_csum_offload) + return -EINVAL; + + for (i = pi->first_qset; i < pi->first_qset + pi->nqsets; i++) + set_qset_lro(dev, i, 1); + + } else + for (i = pi->first_qset; i < pi->first_qset + pi->nqsets; i++) + set_qset_lro(dev, i, 0); + + return 0; +} + static const struct ethtool_ops cxgb_ethtool_ops = { .get_settings = get_settings, .set_settings = set_settings, @@ -1822,6 +1867,8 @@ static const struct ethtool_ops cxgb_ethtool_ops = { .get_regs = get_regs, .get_wol = get_wol, .set_tso = ethtool_op_set_tso, + .get_flags = ethtool_op_get_flags, + .set_flags = cxgb3_set_flags, }; static int in_range(int val, int lo, int hi) @@ -1938,11 +1985,9 @@ static int cxgb_extension_ioctl(struct net_device *dev, void __user *useraddr) } } } - if (t.lro >= 0) { - struct sge_qset *qs = &adapter->sge.qs[t.qset_idx]; - q->lro = t.lro; - qs->lro_enabled = t.lro; - } + if (t.lro >= 0) + set_qset_lro(dev, t.qset_idx, t.lro); + break; } case CHELSIO_GET_QSET_PARAMS:{ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/