182c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen/* 282c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * Copyright (c) 2007 Mellanox Technologies. All rights reserved. 382c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * 482c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * This software is available to you under a choice of one of two 582c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * licenses. You may choose to be licensed under the terms of the GNU 682c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * General Public License (GPL) Version 2, available from the file 782c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * COPYING in the main directory of this source tree, or the 882c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * OpenIB.org BSD license below: 982c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * 1082c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * Redistribution and use in source and binary forms, with or 1182c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * without modification, are permitted provided that the following 1282c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * conditions are met: 1382c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * 1482c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * - Redistributions of source code must retain the above 1582c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * copyright notice, this list of conditions and the following 1682c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * disclaimer. 1782c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * 1882c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * - Redistributions in binary form must reproduce the above 1982c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * copyright notice, this list of conditions and the following 2082c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * disclaimer in the documentation and/or other materials 2182c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * provided with the distribution. 2282c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * 2382c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 2482c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 2582c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 2682c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 2782c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 2882c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 2982c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 3082c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen * SOFTWARE. 3182c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen */ 3282c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen 3382c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen#include <linux/kernel.h> 3482c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen#include <linux/ethtool.h> 3582c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen#include <linux/netdevice.h> 3682c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen 3782c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen#include "ipoib.h" 3882c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen 3982c24c18afc5e1c2a955bdc2762b19721283365cEli Cohenstatic void ipoib_get_drvinfo(struct net_device *netdev, 4082c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen struct ethtool_drvinfo *drvinfo) 4182c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen{ 4282c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1); 4382c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen} 4482c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen 4528d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohenstatic int ipoib_get_coalesce(struct net_device *dev, 4628d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen struct ethtool_coalesce *coal) 4728d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen{ 4828d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen struct ipoib_dev_priv *priv = netdev_priv(dev); 4928d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen 5028d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs; 5128d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames; 5228d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen 5328d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen return 0; 5428d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen} 5528d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen 5628d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohenstatic int ipoib_set_coalesce(struct net_device *dev, 5728d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen struct ethtool_coalesce *coal) 5828d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen{ 5928d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen struct ipoib_dev_priv *priv = netdev_priv(dev); 6028d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen int ret; 6128d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen 6228d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen /* 63757bebb3f989f10acc6f105e89305b0d19aa7c55Or Gerlitz * These values are saved in the private data and returned 64757bebb3f989f10acc6f105e89305b0d19aa7c55Or Gerlitz * when ipoib_get_coalesce() is called 6528d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen */ 6628d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen if (coal->rx_coalesce_usecs > 0xffff || 6728d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen coal->rx_max_coalesced_frames > 0xffff) 6828d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen return -EINVAL; 6928d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen 70f56bcd8013566d4ad4759ae5fc85a6660e4655c7Eli Cohen ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames, 7128d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen coal->rx_coalesce_usecs); 7228d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen if (ret && ret != -ENOSYS) { 7328d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen ipoib_warn(priv, "failed modifying CQ (%d)\n", ret); 7428d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen return ret; 7528d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen } 7628d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen 7728d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs; 7828d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames; 7928d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen 8028d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen return 0; 8128d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen} 8228d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen 8382c24c18afc5e1c2a955bdc2762b19721283365cEli Cohenstatic const struct ethtool_ops ipoib_ethtool_ops = { 8482c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen .get_drvinfo = ipoib_get_drvinfo, 8528d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen .get_coalesce = ipoib_get_coalesce, 8628d52b3cd8d48ef0ff77d4a8a7a21fc2816bb0a5Eli Cohen .set_coalesce = ipoib_set_coalesce, 8782c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen}; 8882c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen 8982c24c18afc5e1c2a955bdc2762b19721283365cEli Cohenvoid ipoib_set_ethtool_ops(struct net_device *dev) 9082c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen{ 9182c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops); 9282c24c18afc5e1c2a955bdc2762b19721283365cEli Cohen} 93