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 IPOIB_NETDEV_STAT(multicast), 57 }; 58 59 #define IPOIB_GLOBAL_STATS_LEN ARRAY_SIZE(ipoib_gstrings_stats) 60 61 static void ipoib_get_drvinfo(struct net_device *netdev, 62 struct ethtool_drvinfo *drvinfo) 63 { 64 struct ipoib_dev_priv *priv = ipoib_priv(netdev); 65 66 ib_get_device_fw_str(priv->ca, 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 = ipoib_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 = ipoib_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 = rdma_set_cq_moderation(priv->recv_cq, 103 coal->rx_max_coalesced_frames, 104 coal->rx_coalesce_usecs); 105 if (ret && ret != -EOPNOTSUPP) { 106 ipoib_warn(priv, "failed modifying CQ (%d)\n", ret); 107 return ret; 108 } 109 110 priv->ethtool.coalesce_usecs = coal->rx_coalesce_usecs; 111 priv->ethtool.max_coalesced_frames = coal->rx_max_coalesced_frames; 112 113 return 0; 114 } 115 static void ipoib_get_ethtool_stats(struct net_device *dev, 116 struct ethtool_stats __always_unused *stats, 117 u64 *data) 118 { 119 int i; 120 struct net_device_stats *net_stats = &dev->stats; 121 u8 *p = (u8 *)net_stats; 122 123 for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) 124 data[i] = *(u64 *)(p + ipoib_gstrings_stats[i].stat_offset); 125 126 } 127 static void ipoib_get_strings(struct net_device __always_unused *dev, 128 u32 stringset, u8 *data) 129 { 130 u8 *p = data; 131 int i; 132 133 switch (stringset) { 134 case ETH_SS_STATS: 135 for (i = 0; i < IPOIB_GLOBAL_STATS_LEN; i++) { 136 memcpy(p, ipoib_gstrings_stats[i].stat_string, 137 ETH_GSTRING_LEN); 138 p += ETH_GSTRING_LEN; 139 } 140 break; 141 case ETH_SS_TEST: 142 default: 143 break; 144 } 145 } 146 static int ipoib_get_sset_count(struct net_device __always_unused *dev, 147 int sset) 148 { 149 switch (sset) { 150 case ETH_SS_STATS: 151 return IPOIB_GLOBAL_STATS_LEN; 152 case ETH_SS_TEST: 153 default: 154 break; 155 } 156 return -EOPNOTSUPP; 157 } 158 159 /* Return lane speed in unit of 1e6 bit/sec */ 160 static inline int ib_speed_enum_to_int(int speed) 161 { 162 switch (speed) { 163 case IB_SPEED_SDR: 164 return SPEED_2500; 165 case IB_SPEED_DDR: 166 return SPEED_5000; 167 case IB_SPEED_QDR: 168 case IB_SPEED_FDR10: 169 return SPEED_10000; 170 case IB_SPEED_FDR: 171 return SPEED_14000; 172 case IB_SPEED_EDR: 173 return SPEED_25000; 174 } 175 176 return SPEED_UNKNOWN; 177 } 178 179 static int ipoib_get_link_ksettings(struct net_device *netdev, 180 struct ethtool_link_ksettings *cmd) 181 { 182 struct ipoib_dev_priv *priv = ipoib_priv(netdev); 183 struct ib_port_attr attr; 184 int ret, speed, width; 185 186 if (!netif_carrier_ok(netdev)) { 187 cmd->base.speed = SPEED_UNKNOWN; 188 cmd->base.duplex = DUPLEX_UNKNOWN; 189 return 0; 190 } 191 192 ret = ib_query_port(priv->ca, priv->port, &attr); 193 if (ret < 0) 194 return -EINVAL; 195 196 speed = ib_speed_enum_to_int(attr.active_speed); 197 width = ib_width_enum_to_int(attr.active_width); 198 199 if (speed < 0 || width < 0) 200 return -EINVAL; 201 202 /* Except the following are set, the other members of 203 * the struct ethtool_link_settings are initialized to 204 * zero in the function __ethtool_get_link_ksettings. 205 */ 206 cmd->base.speed = speed * width; 207 cmd->base.duplex = DUPLEX_FULL; 208 209 cmd->base.phy_address = 0xFF; 210 211 cmd->base.autoneg = AUTONEG_ENABLE; 212 cmd->base.port = PORT_OTHER; 213 214 return 0; 215 } 216 217 static const struct ethtool_ops ipoib_ethtool_ops = { 218 .get_link_ksettings = ipoib_get_link_ksettings, 219 .get_drvinfo = ipoib_get_drvinfo, 220 .get_coalesce = ipoib_get_coalesce, 221 .set_coalesce = ipoib_set_coalesce, 222 .get_strings = ipoib_get_strings, 223 .get_ethtool_stats = ipoib_get_ethtool_stats, 224 .get_sset_count = ipoib_get_sset_count, 225 }; 226 227 void ipoib_set_ethtool_ops(struct net_device *dev) 228 { 229 dev->ethtool_ops = &ipoib_ethtool_ops; 230 } 231