182c24c18SEli Cohen /* 282c24c18SEli Cohen * Copyright (c) 2007 Mellanox Technologies. All rights reserved. 382c24c18SEli Cohen * 482c24c18SEli Cohen * This software is available to you under a choice of one of two 582c24c18SEli Cohen * licenses. You may choose to be licensed under the terms of the GNU 682c24c18SEli Cohen * General Public License (GPL) Version 2, available from the file 782c24c18SEli Cohen * COPYING in the main directory of this source tree, or the 882c24c18SEli Cohen * OpenIB.org BSD license below: 982c24c18SEli Cohen * 1082c24c18SEli Cohen * Redistribution and use in source and binary forms, with or 1182c24c18SEli Cohen * without modification, are permitted provided that the following 1282c24c18SEli Cohen * conditions are met: 1382c24c18SEli Cohen * 1482c24c18SEli Cohen * - Redistributions of source code must retain the above 1582c24c18SEli Cohen * copyright notice, this list of conditions and the following 1682c24c18SEli Cohen * disclaimer. 1782c24c18SEli Cohen * 1882c24c18SEli Cohen * - Redistributions in binary form must reproduce the above 1982c24c18SEli Cohen * copyright notice, this list of conditions and the following 2082c24c18SEli Cohen * disclaimer in the documentation and/or other materials 2182c24c18SEli Cohen * provided with the distribution. 2282c24c18SEli Cohen * 2382c24c18SEli Cohen * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 2482c24c18SEli Cohen * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 2582c24c18SEli Cohen * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 2682c24c18SEli Cohen * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 2782c24c18SEli Cohen * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 2882c24c18SEli Cohen * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 2982c24c18SEli Cohen * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 3082c24c18SEli Cohen * SOFTWARE. 3182c24c18SEli Cohen */ 3282c24c18SEli Cohen 3382c24c18SEli Cohen #include <linux/kernel.h> 3482c24c18SEli Cohen #include <linux/ethtool.h> 3582c24c18SEli Cohen #include <linux/netdevice.h> 3682c24c18SEli Cohen 3782c24c18SEli Cohen #include "ipoib.h" 3882c24c18SEli Cohen 3982c24c18SEli Cohen static void ipoib_get_drvinfo(struct net_device *netdev, 4082c24c18SEli Cohen struct ethtool_drvinfo *drvinfo) 4182c24c18SEli Cohen { 4282c24c18SEli Cohen strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1); 4382c24c18SEli Cohen } 4482c24c18SEli Cohen 4570c9c0dbSOr Gerlitz static u32 ipoib_get_rx_csum(struct net_device *dev) 4670c9c0dbSOr Gerlitz { 4770c9c0dbSOr Gerlitz struct ipoib_dev_priv *priv = netdev_priv(dev); 4870c9c0dbSOr Gerlitz return test_bit(IPOIB_FLAG_CSUM, &priv->flags) && 4970c9c0dbSOr Gerlitz !test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); 5070c9c0dbSOr Gerlitz } 5170c9c0dbSOr Gerlitz 5228d52b3cSEli Cohen static int ipoib_get_coalesce(struct net_device *dev, 5328d52b3cSEli Cohen struct ethtool_coalesce *coal) 5428d52b3cSEli Cohen { 5528d52b3cSEli Cohen struct ipoib_dev_priv *priv = netdev_priv(dev); 5628d52b3cSEli Cohen 5728d52b3cSEli Cohen coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs; 5828d52b3cSEli Cohen coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames; 5928d52b3cSEli Cohen 6028d52b3cSEli Cohen return 0; 6128d52b3cSEli Cohen } 6228d52b3cSEli Cohen 6328d52b3cSEli Cohen static int ipoib_set_coalesce(struct net_device *dev, 6428d52b3cSEli Cohen struct ethtool_coalesce *coal) 6528d52b3cSEli Cohen { 6628d52b3cSEli Cohen struct ipoib_dev_priv *priv = netdev_priv(dev); 6728d52b3cSEli Cohen int ret; 6828d52b3cSEli Cohen 6928d52b3cSEli Cohen /* 70757bebb3SOr Gerlitz * These values are saved in the private data and returned 71757bebb3SOr Gerlitz * when ipoib_get_coalesce() is called 7228d52b3cSEli Cohen */ 7328d52b3cSEli Cohen if (coal->rx_coalesce_usecs > 0xffff || 7428d52b3cSEli Cohen coal->rx_max_coalesced_frames > 0xffff) 7528d52b3cSEli Cohen return -EINVAL; 7628d52b3cSEli Cohen 77f56bcd80SEli Cohen ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames, 7828d52b3cSEli Cohen coal->rx_coalesce_usecs); 7928d52b3cSEli Cohen if (ret && ret != -ENOSYS) { 8028d52b3cSEli Cohen ipoib_warn(priv, "failed modifying CQ (%d)\n", ret); 8128d52b3cSEli Cohen return ret; 8228d52b3cSEli Cohen } 8328d52b3cSEli Cohen 8428d52b3cSEli Cohen priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs; 8528d52b3cSEli Cohen priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames; 8628d52b3cSEli Cohen 8728d52b3cSEli Cohen return 0; 8828d52b3cSEli Cohen } 8928d52b3cSEli Cohen 90af40da89SVladimir Sokolovsky static const char ipoib_stats_keys[][ETH_GSTRING_LEN] = { 91af40da89SVladimir Sokolovsky "LRO aggregated", "LRO flushed", 92af40da89SVladimir Sokolovsky "LRO avg aggr", "LRO no desc" 93af40da89SVladimir Sokolovsky }; 94af40da89SVladimir Sokolovsky 95af40da89SVladimir Sokolovsky static void ipoib_get_strings(struct net_device *netdev, u32 stringset, u8 *data) 96af40da89SVladimir Sokolovsky { 97af40da89SVladimir Sokolovsky switch (stringset) { 98af40da89SVladimir Sokolovsky case ETH_SS_STATS: 99af40da89SVladimir Sokolovsky memcpy(data, *ipoib_stats_keys, sizeof(ipoib_stats_keys)); 100af40da89SVladimir Sokolovsky break; 101af40da89SVladimir Sokolovsky } 102af40da89SVladimir Sokolovsky } 103af40da89SVladimir Sokolovsky 104af40da89SVladimir Sokolovsky static int ipoib_get_sset_count(struct net_device *dev, int sset) 105af40da89SVladimir Sokolovsky { 106af40da89SVladimir Sokolovsky switch (sset) { 107af40da89SVladimir Sokolovsky case ETH_SS_STATS: 108af40da89SVladimir Sokolovsky return ARRAY_SIZE(ipoib_stats_keys); 109af40da89SVladimir Sokolovsky default: 110af40da89SVladimir Sokolovsky return -EOPNOTSUPP; 111af40da89SVladimir Sokolovsky } 112af40da89SVladimir Sokolovsky } 113af40da89SVladimir Sokolovsky 114af40da89SVladimir Sokolovsky static void ipoib_get_ethtool_stats(struct net_device *dev, 115af40da89SVladimir Sokolovsky struct ethtool_stats *stats, uint64_t *data) 116af40da89SVladimir Sokolovsky { 117af40da89SVladimir Sokolovsky struct ipoib_dev_priv *priv = netdev_priv(dev); 118af40da89SVladimir Sokolovsky int index = 0; 119af40da89SVladimir Sokolovsky 120af40da89SVladimir Sokolovsky /* Get LRO statistics */ 121af40da89SVladimir Sokolovsky data[index++] = priv->lro.lro_mgr.stats.aggregated; 122af40da89SVladimir Sokolovsky data[index++] = priv->lro.lro_mgr.stats.flushed; 123af40da89SVladimir Sokolovsky if (priv->lro.lro_mgr.stats.flushed) 124af40da89SVladimir Sokolovsky data[index++] = priv->lro.lro_mgr.stats.aggregated / 125af40da89SVladimir Sokolovsky priv->lro.lro_mgr.stats.flushed; 126af40da89SVladimir Sokolovsky else 127af40da89SVladimir Sokolovsky data[index++] = 0; 128af40da89SVladimir Sokolovsky data[index++] = priv->lro.lro_mgr.stats.no_desc; 129af40da89SVladimir Sokolovsky } 130af40da89SVladimir Sokolovsky 13182c24c18SEli Cohen static const struct ethtool_ops ipoib_ethtool_ops = { 13282c24c18SEli Cohen .get_drvinfo = ipoib_get_drvinfo, 13370c9c0dbSOr Gerlitz .get_rx_csum = ipoib_get_rx_csum, 13428d52b3cSEli Cohen .get_coalesce = ipoib_get_coalesce, 13528d52b3cSEli Cohen .set_coalesce = ipoib_set_coalesce, 136af40da89SVladimir Sokolovsky .get_flags = ethtool_op_get_flags, 137af40da89SVladimir Sokolovsky .set_flags = ethtool_op_set_flags, 138af40da89SVladimir Sokolovsky .get_strings = ipoib_get_strings, 139af40da89SVladimir Sokolovsky .get_sset_count = ipoib_get_sset_count, 140af40da89SVladimir Sokolovsky .get_ethtool_stats = ipoib_get_ethtool_stats, 14182c24c18SEli Cohen }; 14282c24c18SEli Cohen 14382c24c18SEli Cohen void ipoib_set_ethtool_ops(struct net_device *dev) 14482c24c18SEli Cohen { 14582c24c18SEli Cohen SET_ETHTOOL_OPS(dev, &ipoib_ethtool_ops); 14682c24c18SEli Cohen } 147