1 /* 2 * Copyright (c) 2007 Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <linux/kernel.h> 34 #include <linux/ethtool.h> 35 #include <linux/netdevice.h> 36 37 #include "ipoib.h" 38 39 struct ipoib_stats { 40 char stat_string[ETH_GSTRING_LEN]; 41 int stat_offset; 42 }; 43 44 #define IPOIB_NETDEV_STAT(m) { \ 45 .stat_string = #m, \ 46 .stat_offset = offsetof(struct rtnl_link_stats64, m) } 47 48 static const struct ipoib_stats ipoib_gstrings_stats[] = { 49 IPOIB_NETDEV_STAT(rx_packets), 50 IPOIB_NETDEV_STAT(tx_packets), 51 IPOIB_NETDEV_STAT(rx_bytes), 52 IPOIB_NETDEV_STAT(tx_bytes), 53 IPOIB_NETDEV_STAT(tx_errors), 54 IPOIB_NETDEV_STAT(rx_dropped), 55 IPOIB_NETDEV_STAT(tx_dropped) 56 }; 57 58 #define IPOIB_GLOBAL_STATS_LEN ARRAY_SIZE(ipoib_gstrings_stats) 59 60 static void ipoib_get_drvinfo(struct net_device *netdev, 61 struct ethtool_drvinfo *drvinfo) 62 { 63 struct ipoib_dev_priv *priv = netdev_priv(netdev); 64 65 ib_get_device_fw_str(priv->ca, drvinfo->fw_version, 66 sizeof(drvinfo->fw_version)); 67 68 strlcpy(drvinfo->bus_info, dev_name(priv->ca->dev.parent), 69 sizeof(drvinfo->bus_info)); 70 71 strlcpy(drvinfo->version, ipoib_driver_version, 72 sizeof(drvinfo->version)); 73 74 strlcpy(drvinfo->driver, "ib_ipoib", sizeof(drvinfo->driver)); 75 } 76 77 static int ipoib_get_coalesce(struct net_device *dev, 78 struct ethtool_coalesce *coal) 79 { 80 struct ipoib_dev_priv *priv = netdev_priv(dev); 81 82 coal->rx_coalesce_usecs = priv->ethtool.coalesce_usecs; 83 coal->rx_max_coalesced_frames = priv->ethtool.max_coalesced_frames; 84 85 return 0; 86 } 87 88 static int ipoib_set_coalesce(struct net_device *dev, 89 struct ethtool_coalesce *coal) 90 { 91 struct ipoib_dev_priv *priv = netdev_priv(dev); 92 int ret; 93 94 /* 95 * These values are saved in the private data and returned 96 * when ipoib_get_coalesce() is called 97 */ 98 if (coal->rx_coalesce_usecs > 0xffff || 99 coal->rx_max_coalesced_frames > 0xffff) 100 return -EINVAL; 101 102 ret = ib_modify_cq(priv->recv_cq, coal->rx_max_coalesced_frames, 103 coal->rx_coalesce_usecs); 104 if (ret && ret != -ENOSYS) { 105 ipoib_warn(priv, "failed modifying CQ (%d)\n", ret); 106 return ret; 107 } 108 109 priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs; 110 priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames; 111 112 return 0; 113 } 114 static void ipoib_get_ethtool_stats(struct net_device *dev, 115 struct ethtool_stats __always_unused *stats, 116 u64 *data) 117 { 118 int i; 119 struct net_device_stats *net_stats = &dev->stats; 120 u8 *p = (u8 *)net_stats; 121 122 for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) 123 data[i] = *(u64 *)(p + ipoib_gstrings_stats[i].stat_offset); 124 125 } 126 static void ipoib_get_strings(struct net_device __always_unused *dev, 127 u32 stringset, u8 *data) 128 { 129 u8 *p = data; 130 int i; 131 132 switch (stringset) { 133 case ETH_SS_STATS: 134 for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) { 135 memcpy(p, ipoib_gstrings_stats[i].stat_string, 136 ETH_GSTRING_LEN); 137 p += ETH_GSTRING_LEN; 138 } 139 break; 140 case ETH_SS_TEST: 141 default: 142 break; 143 } 144 } 145 static int ipoib_get_sset_count(struct net_device __always_unused *dev, 146 int sset) 147 { 148 switch (sset) { 149 case ETH_SS_STATS: 150 return IPOIB_GLOBAL_STATS_LEN; 151 case ETH_SS_TEST: 152 default: 153 break; 154 } 155 return -EOPNOTSUPP; 156 } 157 158 static const struct ethtool_ops ipoib_ethtool_ops = { 159 .get_drvinfo = ipoib_get_drvinfo, 160 .get_coalesce = ipoib_get_coalesce, 161 .set_coalesce = ipoib_set_coalesce, 162 .get_strings = ipoib_get_strings, 163 .get_ethtool_stats = ipoib_get_ethtool_stats, 164 .get_sset_count = ipoib_get_sset_count, 165 }; 166 167 void ipoib_set_ethtool_ops(struct net_device *dev) 168 { 169 dev->ethtool_ops = &ipoib_ethtool_ops; 170 } 171