19ce48e5aSMichal Kubecek // SPDX-License-Identifier: GPL-2.0-or-later 29ce48e5aSMichal Kubecek /* 39ce48e5aSMichal Kubecek * net/core/ethtool.c - Ethtool ioctl handler 49ce48e5aSMichal Kubecek * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> 59ce48e5aSMichal Kubecek * 69ce48e5aSMichal Kubecek * This file is where we call all the ethtool_ops commands to get 79ce48e5aSMichal Kubecek * the information ethtool needs. 89ce48e5aSMichal Kubecek */ 99ce48e5aSMichal Kubecek 10dd98d289SArnd Bergmann #include <linux/compat.h> 119ce48e5aSMichal Kubecek #include <linux/module.h> 129ce48e5aSMichal Kubecek #include <linux/types.h> 139ce48e5aSMichal Kubecek #include <linux/capability.h> 149ce48e5aSMichal Kubecek #include <linux/errno.h> 159ce48e5aSMichal Kubecek #include <linux/ethtool.h> 169ce48e5aSMichal Kubecek #include <linux/netdevice.h> 179ce48e5aSMichal Kubecek #include <linux/net_tstamp.h> 189ce48e5aSMichal Kubecek #include <linux/phy.h> 199ce48e5aSMichal Kubecek #include <linux/bitops.h> 209ce48e5aSMichal Kubecek #include <linux/uaccess.h> 219ce48e5aSMichal Kubecek #include <linux/vmalloc.h> 229ce48e5aSMichal Kubecek #include <linux/sfp.h> 239ce48e5aSMichal Kubecek #include <linux/slab.h> 249ce48e5aSMichal Kubecek #include <linux/rtnetlink.h> 259ce48e5aSMichal Kubecek #include <linux/sched/signal.h> 269ce48e5aSMichal Kubecek #include <linux/net.h> 27f32a2137SHeiner Kallweit #include <linux/pm_runtime.h> 289ce48e5aSMichal Kubecek #include <net/devlink.h> 29a71506a4SMagnus Karlsson #include <net/xdp_sock_drv.h> 309ce48e5aSMichal Kubecek #include <net/flow_offload.h> 3173286734SMichal Kubecek #include <linux/ethtool_netlink.h> 321c79031fSLeon Romanovsky #include <generated/utsrelease.h> 33d44e1310SMichal Kubecek #include "common.h" 34d44e1310SMichal Kubecek 359ce48e5aSMichal Kubecek /* 369ce48e5aSMichal Kubecek * Some useful ethtool_ops methods that're device independent. 379ce48e5aSMichal Kubecek * If we find that all drivers want to do the same thing here, 389ce48e5aSMichal Kubecek * we can turn these into dev_() function calls. 399ce48e5aSMichal Kubecek */ 409ce48e5aSMichal Kubecek 419ce48e5aSMichal Kubecek u32 ethtool_op_get_link(struct net_device *dev) 429ce48e5aSMichal Kubecek { 439ce48e5aSMichal Kubecek return netif_carrier_ok(dev) ? 1 : 0; 449ce48e5aSMichal Kubecek } 459ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_op_get_link); 469ce48e5aSMichal Kubecek 479ce48e5aSMichal Kubecek int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) 489ce48e5aSMichal Kubecek { 499ce48e5aSMichal Kubecek info->so_timestamping = 509ce48e5aSMichal Kubecek SOF_TIMESTAMPING_TX_SOFTWARE | 519ce48e5aSMichal Kubecek SOF_TIMESTAMPING_RX_SOFTWARE | 529ce48e5aSMichal Kubecek SOF_TIMESTAMPING_SOFTWARE; 539ce48e5aSMichal Kubecek info->phc_index = -1; 549ce48e5aSMichal Kubecek return 0; 559ce48e5aSMichal Kubecek } 569ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_op_get_ts_info); 579ce48e5aSMichal Kubecek 589ce48e5aSMichal Kubecek /* Handlers for each ethtool command */ 599ce48e5aSMichal Kubecek 609ce48e5aSMichal Kubecek static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 619ce48e5aSMichal Kubecek { 629ce48e5aSMichal Kubecek struct ethtool_gfeatures cmd = { 639ce48e5aSMichal Kubecek .cmd = ETHTOOL_GFEATURES, 649ce48e5aSMichal Kubecek .size = ETHTOOL_DEV_FEATURE_WORDS, 659ce48e5aSMichal Kubecek }; 669ce48e5aSMichal Kubecek struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 679ce48e5aSMichal Kubecek u32 __user *sizeaddr; 689ce48e5aSMichal Kubecek u32 copy_size; 699ce48e5aSMichal Kubecek int i; 709ce48e5aSMichal Kubecek 719ce48e5aSMichal Kubecek /* in case feature bits run out again */ 729ce48e5aSMichal Kubecek BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 739ce48e5aSMichal Kubecek 749ce48e5aSMichal Kubecek for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 759ce48e5aSMichal Kubecek features[i].available = (u32)(dev->hw_features >> (32 * i)); 769ce48e5aSMichal Kubecek features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 779ce48e5aSMichal Kubecek features[i].active = (u32)(dev->features >> (32 * i)); 789ce48e5aSMichal Kubecek features[i].never_changed = 799ce48e5aSMichal Kubecek (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 809ce48e5aSMichal Kubecek } 819ce48e5aSMichal Kubecek 829ce48e5aSMichal Kubecek sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 839ce48e5aSMichal Kubecek if (get_user(copy_size, sizeaddr)) 849ce48e5aSMichal Kubecek return -EFAULT; 859ce48e5aSMichal Kubecek 869ce48e5aSMichal Kubecek if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 879ce48e5aSMichal Kubecek copy_size = ETHTOOL_DEV_FEATURE_WORDS; 889ce48e5aSMichal Kubecek 899ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 909ce48e5aSMichal Kubecek return -EFAULT; 919ce48e5aSMichal Kubecek useraddr += sizeof(cmd); 92*ed717613SGustavo A. R. Silva if (copy_to_user(useraddr, features, 93*ed717613SGustavo A. R. Silva array_size(copy_size, sizeof(*features)))) 949ce48e5aSMichal Kubecek return -EFAULT; 959ce48e5aSMichal Kubecek 969ce48e5aSMichal Kubecek return 0; 979ce48e5aSMichal Kubecek } 989ce48e5aSMichal Kubecek 999ce48e5aSMichal Kubecek static int ethtool_set_features(struct net_device *dev, void __user *useraddr) 1009ce48e5aSMichal Kubecek { 1019ce48e5aSMichal Kubecek struct ethtool_sfeatures cmd; 1029ce48e5aSMichal Kubecek struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 1039ce48e5aSMichal Kubecek netdev_features_t wanted = 0, valid = 0; 1049ce48e5aSMichal Kubecek int i, ret = 0; 1059ce48e5aSMichal Kubecek 1069ce48e5aSMichal Kubecek if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 1079ce48e5aSMichal Kubecek return -EFAULT; 1089ce48e5aSMichal Kubecek useraddr += sizeof(cmd); 1099ce48e5aSMichal Kubecek 1109ce48e5aSMichal Kubecek if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) 1119ce48e5aSMichal Kubecek return -EINVAL; 1129ce48e5aSMichal Kubecek 1139ce48e5aSMichal Kubecek if (copy_from_user(features, useraddr, sizeof(features))) 1149ce48e5aSMichal Kubecek return -EFAULT; 1159ce48e5aSMichal Kubecek 1169ce48e5aSMichal Kubecek for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 1179ce48e5aSMichal Kubecek valid |= (netdev_features_t)features[i].valid << (32 * i); 1189ce48e5aSMichal Kubecek wanted |= (netdev_features_t)features[i].requested << (32 * i); 1199ce48e5aSMichal Kubecek } 1209ce48e5aSMichal Kubecek 1219ce48e5aSMichal Kubecek if (valid & ~NETIF_F_ETHTOOL_BITS) 1229ce48e5aSMichal Kubecek return -EINVAL; 1239ce48e5aSMichal Kubecek 1249ce48e5aSMichal Kubecek if (valid & ~dev->hw_features) { 1259ce48e5aSMichal Kubecek valid &= dev->hw_features; 1269ce48e5aSMichal Kubecek ret |= ETHTOOL_F_UNSUPPORTED; 1279ce48e5aSMichal Kubecek } 1289ce48e5aSMichal Kubecek 1299ce48e5aSMichal Kubecek dev->wanted_features &= ~valid; 1309ce48e5aSMichal Kubecek dev->wanted_features |= wanted & valid; 1319ce48e5aSMichal Kubecek __netdev_update_features(dev); 1329ce48e5aSMichal Kubecek 1339ce48e5aSMichal Kubecek if ((dev->wanted_features ^ dev->features) & valid) 1349ce48e5aSMichal Kubecek ret |= ETHTOOL_F_WISH; 1359ce48e5aSMichal Kubecek 1369ce48e5aSMichal Kubecek return ret; 1379ce48e5aSMichal Kubecek } 1389ce48e5aSMichal Kubecek 1399ce48e5aSMichal Kubecek static int __ethtool_get_sset_count(struct net_device *dev, int sset) 1409ce48e5aSMichal Kubecek { 14117809516SFlorian Fainelli const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 1429ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 1439ce48e5aSMichal Kubecek 1449ce48e5aSMichal Kubecek if (sset == ETH_SS_FEATURES) 1459ce48e5aSMichal Kubecek return ARRAY_SIZE(netdev_features_strings); 1469ce48e5aSMichal Kubecek 1479ce48e5aSMichal Kubecek if (sset == ETH_SS_RSS_HASH_FUNCS) 1489ce48e5aSMichal Kubecek return ARRAY_SIZE(rss_hash_func_strings); 1499ce48e5aSMichal Kubecek 1509ce48e5aSMichal Kubecek if (sset == ETH_SS_TUNABLES) 1519ce48e5aSMichal Kubecek return ARRAY_SIZE(tunable_strings); 1529ce48e5aSMichal Kubecek 1539ce48e5aSMichal Kubecek if (sset == ETH_SS_PHY_TUNABLES) 1549ce48e5aSMichal Kubecek return ARRAY_SIZE(phy_tunable_strings); 1559ce48e5aSMichal Kubecek 1569ce48e5aSMichal Kubecek if (sset == ETH_SS_PHY_STATS && dev->phydev && 15717809516SFlorian Fainelli !ops->get_ethtool_phy_stats && 15817809516SFlorian Fainelli phy_ops && phy_ops->get_sset_count) 15917809516SFlorian Fainelli return phy_ops->get_sset_count(dev->phydev); 1609ce48e5aSMichal Kubecek 161428c122fSMichal Kubecek if (sset == ETH_SS_LINK_MODES) 162428c122fSMichal Kubecek return __ETHTOOL_LINK_MODE_MASK_NBITS; 163428c122fSMichal Kubecek 1649ce48e5aSMichal Kubecek if (ops->get_sset_count && ops->get_strings) 1659ce48e5aSMichal Kubecek return ops->get_sset_count(dev, sset); 1669ce48e5aSMichal Kubecek else 1679ce48e5aSMichal Kubecek return -EOPNOTSUPP; 1689ce48e5aSMichal Kubecek } 1699ce48e5aSMichal Kubecek 1709ce48e5aSMichal Kubecek static void __ethtool_get_strings(struct net_device *dev, 1719ce48e5aSMichal Kubecek u32 stringset, u8 *data) 1729ce48e5aSMichal Kubecek { 17317809516SFlorian Fainelli const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 1749ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 1759ce48e5aSMichal Kubecek 1769ce48e5aSMichal Kubecek if (stringset == ETH_SS_FEATURES) 1779ce48e5aSMichal Kubecek memcpy(data, netdev_features_strings, 1789ce48e5aSMichal Kubecek sizeof(netdev_features_strings)); 1799ce48e5aSMichal Kubecek else if (stringset == ETH_SS_RSS_HASH_FUNCS) 1809ce48e5aSMichal Kubecek memcpy(data, rss_hash_func_strings, 1819ce48e5aSMichal Kubecek sizeof(rss_hash_func_strings)); 1829ce48e5aSMichal Kubecek else if (stringset == ETH_SS_TUNABLES) 1839ce48e5aSMichal Kubecek memcpy(data, tunable_strings, sizeof(tunable_strings)); 1849ce48e5aSMichal Kubecek else if (stringset == ETH_SS_PHY_TUNABLES) 1859ce48e5aSMichal Kubecek memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 1869ce48e5aSMichal Kubecek else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 18717809516SFlorian Fainelli !ops->get_ethtool_phy_stats && phy_ops && 18817809516SFlorian Fainelli phy_ops->get_strings) 18917809516SFlorian Fainelli phy_ops->get_strings(dev->phydev, data); 190428c122fSMichal Kubecek else if (stringset == ETH_SS_LINK_MODES) 191428c122fSMichal Kubecek memcpy(data, link_mode_names, 192428c122fSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 1939ce48e5aSMichal Kubecek else 1949ce48e5aSMichal Kubecek /* ops->get_strings is valid because checked earlier */ 1959ce48e5aSMichal Kubecek ops->get_strings(dev, stringset, data); 1969ce48e5aSMichal Kubecek } 1979ce48e5aSMichal Kubecek 1989ce48e5aSMichal Kubecek static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 1999ce48e5aSMichal Kubecek { 2009ce48e5aSMichal Kubecek /* feature masks of legacy discrete ethtool ops */ 2019ce48e5aSMichal Kubecek 2029ce48e5aSMichal Kubecek switch (eth_cmd) { 2039ce48e5aSMichal Kubecek case ETHTOOL_GTXCSUM: 2049ce48e5aSMichal Kubecek case ETHTOOL_STXCSUM: 2059d648fb5SVladyslav Tarasiuk return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | 206f70bb065SMichal Kubecek NETIF_F_SCTP_CRC; 2079ce48e5aSMichal Kubecek case ETHTOOL_GRXCSUM: 2089ce48e5aSMichal Kubecek case ETHTOOL_SRXCSUM: 2099ce48e5aSMichal Kubecek return NETIF_F_RXCSUM; 2109ce48e5aSMichal Kubecek case ETHTOOL_GSG: 2119ce48e5aSMichal Kubecek case ETHTOOL_SSG: 212f70bb065SMichal Kubecek return NETIF_F_SG | NETIF_F_FRAGLIST; 2139ce48e5aSMichal Kubecek case ETHTOOL_GTSO: 2149ce48e5aSMichal Kubecek case ETHTOOL_STSO: 2159ce48e5aSMichal Kubecek return NETIF_F_ALL_TSO; 2169ce48e5aSMichal Kubecek case ETHTOOL_GGSO: 2179ce48e5aSMichal Kubecek case ETHTOOL_SGSO: 2189ce48e5aSMichal Kubecek return NETIF_F_GSO; 2199ce48e5aSMichal Kubecek case ETHTOOL_GGRO: 2209ce48e5aSMichal Kubecek case ETHTOOL_SGRO: 2219ce48e5aSMichal Kubecek return NETIF_F_GRO; 2229ce48e5aSMichal Kubecek default: 2239ce48e5aSMichal Kubecek BUG(); 2249ce48e5aSMichal Kubecek } 2259ce48e5aSMichal Kubecek } 2269ce48e5aSMichal Kubecek 2279ce48e5aSMichal Kubecek static int ethtool_get_one_feature(struct net_device *dev, 2289ce48e5aSMichal Kubecek char __user *useraddr, u32 ethcmd) 2299ce48e5aSMichal Kubecek { 2309ce48e5aSMichal Kubecek netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 2319ce48e5aSMichal Kubecek struct ethtool_value edata = { 2329ce48e5aSMichal Kubecek .cmd = ethcmd, 2339ce48e5aSMichal Kubecek .data = !!(dev->features & mask), 2349ce48e5aSMichal Kubecek }; 2359ce48e5aSMichal Kubecek 2369ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &edata, sizeof(edata))) 2379ce48e5aSMichal Kubecek return -EFAULT; 2389ce48e5aSMichal Kubecek return 0; 2399ce48e5aSMichal Kubecek } 2409ce48e5aSMichal Kubecek 2419ce48e5aSMichal Kubecek static int ethtool_set_one_feature(struct net_device *dev, 2429ce48e5aSMichal Kubecek void __user *useraddr, u32 ethcmd) 2439ce48e5aSMichal Kubecek { 2449ce48e5aSMichal Kubecek struct ethtool_value edata; 2459ce48e5aSMichal Kubecek netdev_features_t mask; 2469ce48e5aSMichal Kubecek 2479ce48e5aSMichal Kubecek if (copy_from_user(&edata, useraddr, sizeof(edata))) 2489ce48e5aSMichal Kubecek return -EFAULT; 2499ce48e5aSMichal Kubecek 2509ce48e5aSMichal Kubecek mask = ethtool_get_feature_mask(ethcmd); 2519ce48e5aSMichal Kubecek mask &= dev->hw_features; 2529ce48e5aSMichal Kubecek if (!mask) 2539ce48e5aSMichal Kubecek return -EOPNOTSUPP; 2549ce48e5aSMichal Kubecek 2559ce48e5aSMichal Kubecek if (edata.data) 2569ce48e5aSMichal Kubecek dev->wanted_features |= mask; 2579ce48e5aSMichal Kubecek else 2589ce48e5aSMichal Kubecek dev->wanted_features &= ~mask; 2599ce48e5aSMichal Kubecek 2609ce48e5aSMichal Kubecek __netdev_update_features(dev); 2619ce48e5aSMichal Kubecek 2629ce48e5aSMichal Kubecek return 0; 2639ce48e5aSMichal Kubecek } 2649ce48e5aSMichal Kubecek 2659ce48e5aSMichal Kubecek #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 2669ce48e5aSMichal Kubecek ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 2679ce48e5aSMichal Kubecek #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 2689ce48e5aSMichal Kubecek NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 2699ce48e5aSMichal Kubecek NETIF_F_RXHASH) 2709ce48e5aSMichal Kubecek 2719ce48e5aSMichal Kubecek static u32 __ethtool_get_flags(struct net_device *dev) 2729ce48e5aSMichal Kubecek { 2739ce48e5aSMichal Kubecek u32 flags = 0; 2749ce48e5aSMichal Kubecek 2759ce48e5aSMichal Kubecek if (dev->features & NETIF_F_LRO) 2769ce48e5aSMichal Kubecek flags |= ETH_FLAG_LRO; 2779ce48e5aSMichal Kubecek if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 2789ce48e5aSMichal Kubecek flags |= ETH_FLAG_RXVLAN; 2799ce48e5aSMichal Kubecek if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 2809ce48e5aSMichal Kubecek flags |= ETH_FLAG_TXVLAN; 2819ce48e5aSMichal Kubecek if (dev->features & NETIF_F_NTUPLE) 2829ce48e5aSMichal Kubecek flags |= ETH_FLAG_NTUPLE; 2839ce48e5aSMichal Kubecek if (dev->features & NETIF_F_RXHASH) 2849ce48e5aSMichal Kubecek flags |= ETH_FLAG_RXHASH; 2859ce48e5aSMichal Kubecek 2869ce48e5aSMichal Kubecek return flags; 2879ce48e5aSMichal Kubecek } 2889ce48e5aSMichal Kubecek 2899ce48e5aSMichal Kubecek static int __ethtool_set_flags(struct net_device *dev, u32 data) 2909ce48e5aSMichal Kubecek { 2919ce48e5aSMichal Kubecek netdev_features_t features = 0, changed; 2929ce48e5aSMichal Kubecek 2939ce48e5aSMichal Kubecek if (data & ~ETH_ALL_FLAGS) 2949ce48e5aSMichal Kubecek return -EINVAL; 2959ce48e5aSMichal Kubecek 2969ce48e5aSMichal Kubecek if (data & ETH_FLAG_LRO) 2979ce48e5aSMichal Kubecek features |= NETIF_F_LRO; 2989ce48e5aSMichal Kubecek if (data & ETH_FLAG_RXVLAN) 2999ce48e5aSMichal Kubecek features |= NETIF_F_HW_VLAN_CTAG_RX; 3009ce48e5aSMichal Kubecek if (data & ETH_FLAG_TXVLAN) 3019ce48e5aSMichal Kubecek features |= NETIF_F_HW_VLAN_CTAG_TX; 3029ce48e5aSMichal Kubecek if (data & ETH_FLAG_NTUPLE) 3039ce48e5aSMichal Kubecek features |= NETIF_F_NTUPLE; 3049ce48e5aSMichal Kubecek if (data & ETH_FLAG_RXHASH) 3059ce48e5aSMichal Kubecek features |= NETIF_F_RXHASH; 3069ce48e5aSMichal Kubecek 3079ce48e5aSMichal Kubecek /* allow changing only bits set in hw_features */ 3089ce48e5aSMichal Kubecek changed = (features ^ dev->features) & ETH_ALL_FEATURES; 3099ce48e5aSMichal Kubecek if (changed & ~dev->hw_features) 3109ce48e5aSMichal Kubecek return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 3119ce48e5aSMichal Kubecek 3129ce48e5aSMichal Kubecek dev->wanted_features = 3139ce48e5aSMichal Kubecek (dev->wanted_features & ~changed) | (features & changed); 3149ce48e5aSMichal Kubecek 3159ce48e5aSMichal Kubecek __netdev_update_features(dev); 3169ce48e5aSMichal Kubecek 3179ce48e5aSMichal Kubecek return 0; 3189ce48e5aSMichal Kubecek } 3199ce48e5aSMichal Kubecek 3209ce48e5aSMichal Kubecek /* Given two link masks, AND them together and save the result in dst. */ 3219ce48e5aSMichal Kubecek void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 3229ce48e5aSMichal Kubecek struct ethtool_link_ksettings *src) 3239ce48e5aSMichal Kubecek { 3249ce48e5aSMichal Kubecek unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 3259ce48e5aSMichal Kubecek unsigned int idx = 0; 3269ce48e5aSMichal Kubecek 3279ce48e5aSMichal Kubecek for (; idx < size; idx++) { 3289ce48e5aSMichal Kubecek dst->link_modes.supported[idx] &= 3299ce48e5aSMichal Kubecek src->link_modes.supported[idx]; 3309ce48e5aSMichal Kubecek dst->link_modes.advertising[idx] &= 3319ce48e5aSMichal Kubecek src->link_modes.advertising[idx]; 3329ce48e5aSMichal Kubecek } 3339ce48e5aSMichal Kubecek } 3349ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_intersect_link_masks); 3359ce48e5aSMichal Kubecek 3369ce48e5aSMichal Kubecek void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 3379ce48e5aSMichal Kubecek u32 legacy_u32) 3389ce48e5aSMichal Kubecek { 3399ce48e5aSMichal Kubecek bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS); 3409ce48e5aSMichal Kubecek dst[0] = legacy_u32; 3419ce48e5aSMichal Kubecek } 3429ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 3439ce48e5aSMichal Kubecek 3449ce48e5aSMichal Kubecek /* return false if src had higher bits set. lower bits always updated. */ 3459ce48e5aSMichal Kubecek bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 3469ce48e5aSMichal Kubecek const unsigned long *src) 3479ce48e5aSMichal Kubecek { 3489ce48e5aSMichal Kubecek bool retval = true; 3499ce48e5aSMichal Kubecek 3509ce48e5aSMichal Kubecek /* TODO: following test will soon always be true */ 3519ce48e5aSMichal Kubecek if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) { 3529ce48e5aSMichal Kubecek __ETHTOOL_DECLARE_LINK_MODE_MASK(ext); 3539ce48e5aSMichal Kubecek 3549ce48e5aSMichal Kubecek bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS); 3559ce48e5aSMichal Kubecek bitmap_fill(ext, 32); 3569ce48e5aSMichal Kubecek bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS); 3579ce48e5aSMichal Kubecek if (bitmap_intersects(ext, src, 3589ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS)) { 3599ce48e5aSMichal Kubecek /* src mask goes beyond bit 31 */ 3609ce48e5aSMichal Kubecek retval = false; 3619ce48e5aSMichal Kubecek } 3629ce48e5aSMichal Kubecek } 3639ce48e5aSMichal Kubecek *legacy_u32 = src[0]; 3649ce48e5aSMichal Kubecek return retval; 3659ce48e5aSMichal Kubecek } 3669ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 3679ce48e5aSMichal Kubecek 3689ce48e5aSMichal Kubecek /* return false if ksettings link modes had higher bits 3699ce48e5aSMichal Kubecek * set. legacy_settings always updated (best effort) 3709ce48e5aSMichal Kubecek */ 3719ce48e5aSMichal Kubecek static bool 3729ce48e5aSMichal Kubecek convert_link_ksettings_to_legacy_settings( 3739ce48e5aSMichal Kubecek struct ethtool_cmd *legacy_settings, 3749ce48e5aSMichal Kubecek const struct ethtool_link_ksettings *link_ksettings) 3759ce48e5aSMichal Kubecek { 3769ce48e5aSMichal Kubecek bool retval = true; 3779ce48e5aSMichal Kubecek 3789ce48e5aSMichal Kubecek memset(legacy_settings, 0, sizeof(*legacy_settings)); 3799ce48e5aSMichal Kubecek /* this also clears the deprecated fields in legacy structure: 3809ce48e5aSMichal Kubecek * __u8 transceiver; 3819ce48e5aSMichal Kubecek * __u32 maxtxpkt; 3829ce48e5aSMichal Kubecek * __u32 maxrxpkt; 3839ce48e5aSMichal Kubecek */ 3849ce48e5aSMichal Kubecek 3859ce48e5aSMichal Kubecek retval &= ethtool_convert_link_mode_to_legacy_u32( 3869ce48e5aSMichal Kubecek &legacy_settings->supported, 3879ce48e5aSMichal Kubecek link_ksettings->link_modes.supported); 3889ce48e5aSMichal Kubecek retval &= ethtool_convert_link_mode_to_legacy_u32( 3899ce48e5aSMichal Kubecek &legacy_settings->advertising, 3909ce48e5aSMichal Kubecek link_ksettings->link_modes.advertising); 3919ce48e5aSMichal Kubecek retval &= ethtool_convert_link_mode_to_legacy_u32( 3929ce48e5aSMichal Kubecek &legacy_settings->lp_advertising, 3939ce48e5aSMichal Kubecek link_ksettings->link_modes.lp_advertising); 3949ce48e5aSMichal Kubecek ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 3959ce48e5aSMichal Kubecek legacy_settings->duplex 3969ce48e5aSMichal Kubecek = link_ksettings->base.duplex; 3979ce48e5aSMichal Kubecek legacy_settings->port 3989ce48e5aSMichal Kubecek = link_ksettings->base.port; 3999ce48e5aSMichal Kubecek legacy_settings->phy_address 4009ce48e5aSMichal Kubecek = link_ksettings->base.phy_address; 4019ce48e5aSMichal Kubecek legacy_settings->autoneg 4029ce48e5aSMichal Kubecek = link_ksettings->base.autoneg; 4039ce48e5aSMichal Kubecek legacy_settings->mdio_support 4049ce48e5aSMichal Kubecek = link_ksettings->base.mdio_support; 4059ce48e5aSMichal Kubecek legacy_settings->eth_tp_mdix 4069ce48e5aSMichal Kubecek = link_ksettings->base.eth_tp_mdix; 4079ce48e5aSMichal Kubecek legacy_settings->eth_tp_mdix_ctrl 4089ce48e5aSMichal Kubecek = link_ksettings->base.eth_tp_mdix_ctrl; 4099ce48e5aSMichal Kubecek legacy_settings->transceiver 4109ce48e5aSMichal Kubecek = link_ksettings->base.transceiver; 4119ce48e5aSMichal Kubecek return retval; 4129ce48e5aSMichal Kubecek } 4139ce48e5aSMichal Kubecek 4149ce48e5aSMichal Kubecek /* number of 32-bit words to store the user's link mode bitmaps */ 4159ce48e5aSMichal Kubecek #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 4169ce48e5aSMichal Kubecek DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 4179ce48e5aSMichal Kubecek 4189ce48e5aSMichal Kubecek /* layout of the struct passed from/to userland */ 4199ce48e5aSMichal Kubecek struct ethtool_link_usettings { 4209ce48e5aSMichal Kubecek struct ethtool_link_settings base; 4219ce48e5aSMichal Kubecek struct { 4229ce48e5aSMichal Kubecek __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 4239ce48e5aSMichal Kubecek __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 4249ce48e5aSMichal Kubecek __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 4259ce48e5aSMichal Kubecek } link_modes; 4269ce48e5aSMichal Kubecek }; 4279ce48e5aSMichal Kubecek 4289ce48e5aSMichal Kubecek /* Internal kernel helper to query a device ethtool_link_settings. */ 4299ce48e5aSMichal Kubecek int __ethtool_get_link_ksettings(struct net_device *dev, 4309ce48e5aSMichal Kubecek struct ethtool_link_ksettings *link_ksettings) 4319ce48e5aSMichal Kubecek { 4329ce48e5aSMichal Kubecek ASSERT_RTNL(); 4339ce48e5aSMichal Kubecek 4349ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_link_ksettings) 4359ce48e5aSMichal Kubecek return -EOPNOTSUPP; 4369ce48e5aSMichal Kubecek 4379ce48e5aSMichal Kubecek memset(link_ksettings, 0, sizeof(*link_ksettings)); 438a975d7d8SDanielle Ratson return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 4399ce48e5aSMichal Kubecek } 4409ce48e5aSMichal Kubecek EXPORT_SYMBOL(__ethtool_get_link_ksettings); 4419ce48e5aSMichal Kubecek 4429ce48e5aSMichal Kubecek /* convert ethtool_link_usettings in user space to a kernel internal 4439ce48e5aSMichal Kubecek * ethtool_link_ksettings. return 0 on success, errno on error. 4449ce48e5aSMichal Kubecek */ 4459ce48e5aSMichal Kubecek static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 4469ce48e5aSMichal Kubecek const void __user *from) 4479ce48e5aSMichal Kubecek { 4489ce48e5aSMichal Kubecek struct ethtool_link_usettings link_usettings; 4499ce48e5aSMichal Kubecek 4509ce48e5aSMichal Kubecek if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 4519ce48e5aSMichal Kubecek return -EFAULT; 4529ce48e5aSMichal Kubecek 4539ce48e5aSMichal Kubecek memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 4549ce48e5aSMichal Kubecek bitmap_from_arr32(to->link_modes.supported, 4559ce48e5aSMichal Kubecek link_usettings.link_modes.supported, 4569ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS); 4579ce48e5aSMichal Kubecek bitmap_from_arr32(to->link_modes.advertising, 4589ce48e5aSMichal Kubecek link_usettings.link_modes.advertising, 4599ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS); 4609ce48e5aSMichal Kubecek bitmap_from_arr32(to->link_modes.lp_advertising, 4619ce48e5aSMichal Kubecek link_usettings.link_modes.lp_advertising, 4629ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS); 4639ce48e5aSMichal Kubecek 4649ce48e5aSMichal Kubecek return 0; 4659ce48e5aSMichal Kubecek } 4669ce48e5aSMichal Kubecek 46770ae1e12SCris Forno /* Check if the user is trying to change anything besides speed/duplex */ 46870ae1e12SCris Forno bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) 46970ae1e12SCris Forno { 47070ae1e12SCris Forno struct ethtool_link_settings base2 = {}; 47170ae1e12SCris Forno 47270ae1e12SCris Forno base2.speed = cmd->base.speed; 47370ae1e12SCris Forno base2.port = PORT_OTHER; 47470ae1e12SCris Forno base2.duplex = cmd->base.duplex; 47570ae1e12SCris Forno base2.cmd = cmd->base.cmd; 47670ae1e12SCris Forno base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; 47770ae1e12SCris Forno 47870ae1e12SCris Forno return !memcmp(&base2, &cmd->base, sizeof(base2)) && 47970ae1e12SCris Forno bitmap_empty(cmd->link_modes.supported, 48070ae1e12SCris Forno __ETHTOOL_LINK_MODE_MASK_NBITS) && 48170ae1e12SCris Forno bitmap_empty(cmd->link_modes.lp_advertising, 48270ae1e12SCris Forno __ETHTOOL_LINK_MODE_MASK_NBITS); 48370ae1e12SCris Forno } 48470ae1e12SCris Forno 4859ce48e5aSMichal Kubecek /* convert a kernel internal ethtool_link_ksettings to 4869ce48e5aSMichal Kubecek * ethtool_link_usettings in user space. return 0 on success, errno on 4879ce48e5aSMichal Kubecek * error. 4889ce48e5aSMichal Kubecek */ 4899ce48e5aSMichal Kubecek static int 4909ce48e5aSMichal Kubecek store_link_ksettings_for_user(void __user *to, 4919ce48e5aSMichal Kubecek const struct ethtool_link_ksettings *from) 4929ce48e5aSMichal Kubecek { 4939ce48e5aSMichal Kubecek struct ethtool_link_usettings link_usettings; 4949ce48e5aSMichal Kubecek 495c1d9e34eSGustavo A. R. Silva memcpy(&link_usettings, from, sizeof(link_usettings)); 4969ce48e5aSMichal Kubecek bitmap_to_arr32(link_usettings.link_modes.supported, 4979ce48e5aSMichal Kubecek from->link_modes.supported, 4989ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS); 4999ce48e5aSMichal Kubecek bitmap_to_arr32(link_usettings.link_modes.advertising, 5009ce48e5aSMichal Kubecek from->link_modes.advertising, 5019ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS); 5029ce48e5aSMichal Kubecek bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 5039ce48e5aSMichal Kubecek from->link_modes.lp_advertising, 5049ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS); 5059ce48e5aSMichal Kubecek 5069ce48e5aSMichal Kubecek if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 5079ce48e5aSMichal Kubecek return -EFAULT; 5089ce48e5aSMichal Kubecek 5099ce48e5aSMichal Kubecek return 0; 5109ce48e5aSMichal Kubecek } 5119ce48e5aSMichal Kubecek 5129ce48e5aSMichal Kubecek /* Query device for its ethtool_link_settings. */ 5139ce48e5aSMichal Kubecek static int ethtool_get_link_ksettings(struct net_device *dev, 5149ce48e5aSMichal Kubecek void __user *useraddr) 5159ce48e5aSMichal Kubecek { 5169ce48e5aSMichal Kubecek int err = 0; 5179ce48e5aSMichal Kubecek struct ethtool_link_ksettings link_ksettings; 5189ce48e5aSMichal Kubecek 5199ce48e5aSMichal Kubecek ASSERT_RTNL(); 5209ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_link_ksettings) 5219ce48e5aSMichal Kubecek return -EOPNOTSUPP; 5229ce48e5aSMichal Kubecek 5239ce48e5aSMichal Kubecek /* handle bitmap nbits handshake */ 5249ce48e5aSMichal Kubecek if (copy_from_user(&link_ksettings.base, useraddr, 5259ce48e5aSMichal Kubecek sizeof(link_ksettings.base))) 5269ce48e5aSMichal Kubecek return -EFAULT; 5279ce48e5aSMichal Kubecek 5289ce48e5aSMichal Kubecek if (__ETHTOOL_LINK_MODE_MASK_NU32 5299ce48e5aSMichal Kubecek != link_ksettings.base.link_mode_masks_nwords) { 5309ce48e5aSMichal Kubecek /* wrong link mode nbits requested */ 5319ce48e5aSMichal Kubecek memset(&link_ksettings, 0, sizeof(link_ksettings)); 5329ce48e5aSMichal Kubecek link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 5339ce48e5aSMichal Kubecek /* send back number of words required as negative val */ 5349ce48e5aSMichal Kubecek compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 5359ce48e5aSMichal Kubecek "need too many bits for link modes!"); 5369ce48e5aSMichal Kubecek link_ksettings.base.link_mode_masks_nwords 5379ce48e5aSMichal Kubecek = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 5389ce48e5aSMichal Kubecek 5399ce48e5aSMichal Kubecek /* copy the base fields back to user, not the link 5409ce48e5aSMichal Kubecek * mode bitmaps 5419ce48e5aSMichal Kubecek */ 5429ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &link_ksettings.base, 5439ce48e5aSMichal Kubecek sizeof(link_ksettings.base))) 5449ce48e5aSMichal Kubecek return -EFAULT; 5459ce48e5aSMichal Kubecek 5469ce48e5aSMichal Kubecek return 0; 5479ce48e5aSMichal Kubecek } 5489ce48e5aSMichal Kubecek 5499ce48e5aSMichal Kubecek /* handshake successful: user/kernel agree on 5509ce48e5aSMichal Kubecek * link_mode_masks_nwords 5519ce48e5aSMichal Kubecek */ 5529ce48e5aSMichal Kubecek 5539ce48e5aSMichal Kubecek memset(&link_ksettings, 0, sizeof(link_ksettings)); 5549ce48e5aSMichal Kubecek err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 5559ce48e5aSMichal Kubecek if (err < 0) 5569ce48e5aSMichal Kubecek return err; 5579ce48e5aSMichal Kubecek 5589ce48e5aSMichal Kubecek /* make sure we tell the right values to user */ 5599ce48e5aSMichal Kubecek link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 5609ce48e5aSMichal Kubecek link_ksettings.base.link_mode_masks_nwords 5619ce48e5aSMichal Kubecek = __ETHTOOL_LINK_MODE_MASK_NU32; 562bdbdac76SOleksij Rempel link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; 563bdbdac76SOleksij Rempel link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; 5649ce48e5aSMichal Kubecek 5659ce48e5aSMichal Kubecek return store_link_ksettings_for_user(useraddr, &link_ksettings); 5669ce48e5aSMichal Kubecek } 5679ce48e5aSMichal Kubecek 5689ce48e5aSMichal Kubecek /* Update device ethtool_link_settings. */ 5699ce48e5aSMichal Kubecek static int ethtool_set_link_ksettings(struct net_device *dev, 5709ce48e5aSMichal Kubecek void __user *useraddr) 5719ce48e5aSMichal Kubecek { 5729ce48e5aSMichal Kubecek int err; 5739ce48e5aSMichal Kubecek struct ethtool_link_ksettings link_ksettings; 5749ce48e5aSMichal Kubecek 5759ce48e5aSMichal Kubecek ASSERT_RTNL(); 5769ce48e5aSMichal Kubecek 5779ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_link_ksettings) 5789ce48e5aSMichal Kubecek return -EOPNOTSUPP; 5799ce48e5aSMichal Kubecek 5809ce48e5aSMichal Kubecek /* make sure nbits field has expected value */ 5819ce48e5aSMichal Kubecek if (copy_from_user(&link_ksettings.base, useraddr, 5829ce48e5aSMichal Kubecek sizeof(link_ksettings.base))) 5839ce48e5aSMichal Kubecek return -EFAULT; 5849ce48e5aSMichal Kubecek 5859ce48e5aSMichal Kubecek if (__ETHTOOL_LINK_MODE_MASK_NU32 5869ce48e5aSMichal Kubecek != link_ksettings.base.link_mode_masks_nwords) 5879ce48e5aSMichal Kubecek return -EINVAL; 5889ce48e5aSMichal Kubecek 5899ce48e5aSMichal Kubecek /* copy the whole structure, now that we know it has expected 5909ce48e5aSMichal Kubecek * format 5919ce48e5aSMichal Kubecek */ 5929ce48e5aSMichal Kubecek err = load_link_ksettings_from_user(&link_ksettings, useraddr); 5939ce48e5aSMichal Kubecek if (err) 5949ce48e5aSMichal Kubecek return err; 5959ce48e5aSMichal Kubecek 5969ce48e5aSMichal Kubecek /* re-check nwords field, just in case */ 5979ce48e5aSMichal Kubecek if (__ETHTOOL_LINK_MODE_MASK_NU32 5989ce48e5aSMichal Kubecek != link_ksettings.base.link_mode_masks_nwords) 5999ce48e5aSMichal Kubecek return -EINVAL; 6009ce48e5aSMichal Kubecek 601bdbdac76SOleksij Rempel if (link_ksettings.base.master_slave_cfg || 602bdbdac76SOleksij Rempel link_ksettings.base.master_slave_state) 603bdbdac76SOleksij Rempel return -EINVAL; 604bdbdac76SOleksij Rempel 60573286734SMichal Kubecek err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 6061b1b1847SMichal Kubecek if (err >= 0) { 60773286734SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 6081b1b1847SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 6091b1b1847SMichal Kubecek } 61073286734SMichal Kubecek return err; 6119ce48e5aSMichal Kubecek } 6129ce48e5aSMichal Kubecek 61370ae1e12SCris Forno int ethtool_virtdev_set_link_ksettings(struct net_device *dev, 61470ae1e12SCris Forno const struct ethtool_link_ksettings *cmd, 61570ae1e12SCris Forno u32 *dev_speed, u8 *dev_duplex) 61670ae1e12SCris Forno { 61770ae1e12SCris Forno u32 speed; 61870ae1e12SCris Forno u8 duplex; 61970ae1e12SCris Forno 62070ae1e12SCris Forno speed = cmd->base.speed; 62170ae1e12SCris Forno duplex = cmd->base.duplex; 62270ae1e12SCris Forno /* don't allow custom speed and duplex */ 62370ae1e12SCris Forno if (!ethtool_validate_speed(speed) || 62470ae1e12SCris Forno !ethtool_validate_duplex(duplex) || 62570ae1e12SCris Forno !ethtool_virtdev_validate_cmd(cmd)) 62670ae1e12SCris Forno return -EINVAL; 62770ae1e12SCris Forno *dev_speed = speed; 62870ae1e12SCris Forno *dev_duplex = duplex; 62970ae1e12SCris Forno 63070ae1e12SCris Forno return 0; 63170ae1e12SCris Forno } 63270ae1e12SCris Forno EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); 63370ae1e12SCris Forno 6349ce48e5aSMichal Kubecek /* Query device for its ethtool_cmd settings. 6359ce48e5aSMichal Kubecek * 6369ce48e5aSMichal Kubecek * Backward compatibility note: for compatibility with legacy ethtool, this is 6379ce48e5aSMichal Kubecek * now implemented via get_link_ksettings. When driver reports higher link mode 6389ce48e5aSMichal Kubecek * bits, a kernel warning is logged once (with name of 1st driver/device) to 6399ce48e5aSMichal Kubecek * recommend user to upgrade ethtool, but the command is successful (only the 6409ce48e5aSMichal Kubecek * lower link mode bits reported back to user). Deprecated fields from 6419ce48e5aSMichal Kubecek * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 6429ce48e5aSMichal Kubecek */ 6439ce48e5aSMichal Kubecek static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 6449ce48e5aSMichal Kubecek { 6459ce48e5aSMichal Kubecek struct ethtool_link_ksettings link_ksettings; 6469ce48e5aSMichal Kubecek struct ethtool_cmd cmd; 6479ce48e5aSMichal Kubecek int err; 6489ce48e5aSMichal Kubecek 6499ce48e5aSMichal Kubecek ASSERT_RTNL(); 6509ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_link_ksettings) 6519ce48e5aSMichal Kubecek return -EOPNOTSUPP; 6529ce48e5aSMichal Kubecek 6539ce48e5aSMichal Kubecek memset(&link_ksettings, 0, sizeof(link_ksettings)); 6549ce48e5aSMichal Kubecek err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 6559ce48e5aSMichal Kubecek if (err < 0) 6569ce48e5aSMichal Kubecek return err; 6579ce48e5aSMichal Kubecek convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 6589ce48e5aSMichal Kubecek 6599ce48e5aSMichal Kubecek /* send a sensible cmd tag back to user */ 6609ce48e5aSMichal Kubecek cmd.cmd = ETHTOOL_GSET; 6619ce48e5aSMichal Kubecek 6629ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 6639ce48e5aSMichal Kubecek return -EFAULT; 6649ce48e5aSMichal Kubecek 6659ce48e5aSMichal Kubecek return 0; 6669ce48e5aSMichal Kubecek } 6679ce48e5aSMichal Kubecek 6689ce48e5aSMichal Kubecek /* Update device link settings with given ethtool_cmd. 6699ce48e5aSMichal Kubecek * 6709ce48e5aSMichal Kubecek * Backward compatibility note: for compatibility with legacy ethtool, this is 6719ce48e5aSMichal Kubecek * now always implemented via set_link_settings. When user's request updates 6729ce48e5aSMichal Kubecek * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 6739ce48e5aSMichal Kubecek * warning is logged once (with name of 1st driver/device) to recommend user to 6749ce48e5aSMichal Kubecek * upgrade ethtool, and the request is rejected. 6759ce48e5aSMichal Kubecek */ 6769ce48e5aSMichal Kubecek static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 6779ce48e5aSMichal Kubecek { 6789ce48e5aSMichal Kubecek struct ethtool_link_ksettings link_ksettings; 6799ce48e5aSMichal Kubecek struct ethtool_cmd cmd; 68073286734SMichal Kubecek int ret; 6819ce48e5aSMichal Kubecek 6829ce48e5aSMichal Kubecek ASSERT_RTNL(); 6839ce48e5aSMichal Kubecek 6849ce48e5aSMichal Kubecek if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 6859ce48e5aSMichal Kubecek return -EFAULT; 6869ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_link_ksettings) 6879ce48e5aSMichal Kubecek return -EOPNOTSUPP; 6889ce48e5aSMichal Kubecek 6899ce48e5aSMichal Kubecek if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 6909ce48e5aSMichal Kubecek return -EINVAL; 6919ce48e5aSMichal Kubecek link_ksettings.base.link_mode_masks_nwords = 6929ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NU32; 69373286734SMichal Kubecek ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 6941b1b1847SMichal Kubecek if (ret >= 0) { 69573286734SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 6961b1b1847SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 6971b1b1847SMichal Kubecek } 69873286734SMichal Kubecek return ret; 6999ce48e5aSMichal Kubecek } 7009ce48e5aSMichal Kubecek 7019ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev, 7029ce48e5aSMichal Kubecek void __user *useraddr) 7039ce48e5aSMichal Kubecek { 7049ce48e5aSMichal Kubecek struct ethtool_drvinfo info; 7059ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 7069ce48e5aSMichal Kubecek 7079ce48e5aSMichal Kubecek memset(&info, 0, sizeof(info)); 7089ce48e5aSMichal Kubecek info.cmd = ETHTOOL_GDRVINFO; 7096a7e25c7SLeon Romanovsky strlcpy(info.version, UTS_RELEASE, sizeof(info.version)); 7109ce48e5aSMichal Kubecek if (ops->get_drvinfo) { 7119ce48e5aSMichal Kubecek ops->get_drvinfo(dev, &info); 7129ce48e5aSMichal Kubecek } else if (dev->dev.parent && dev->dev.parent->driver) { 7139ce48e5aSMichal Kubecek strlcpy(info.bus_info, dev_name(dev->dev.parent), 7149ce48e5aSMichal Kubecek sizeof(info.bus_info)); 7159ce48e5aSMichal Kubecek strlcpy(info.driver, dev->dev.parent->driver->name, 7169ce48e5aSMichal Kubecek sizeof(info.driver)); 7179ce48e5aSMichal Kubecek } else { 7189ce48e5aSMichal Kubecek return -EOPNOTSUPP; 7199ce48e5aSMichal Kubecek } 7209ce48e5aSMichal Kubecek 7219ce48e5aSMichal Kubecek /* 7229ce48e5aSMichal Kubecek * this method of obtaining string set info is deprecated; 7239ce48e5aSMichal Kubecek * Use ETHTOOL_GSSET_INFO instead. 7249ce48e5aSMichal Kubecek */ 7259ce48e5aSMichal Kubecek if (ops->get_sset_count) { 7269ce48e5aSMichal Kubecek int rc; 7279ce48e5aSMichal Kubecek 7289ce48e5aSMichal Kubecek rc = ops->get_sset_count(dev, ETH_SS_TEST); 7299ce48e5aSMichal Kubecek if (rc >= 0) 7309ce48e5aSMichal Kubecek info.testinfo_len = rc; 7319ce48e5aSMichal Kubecek rc = ops->get_sset_count(dev, ETH_SS_STATS); 7329ce48e5aSMichal Kubecek if (rc >= 0) 7339ce48e5aSMichal Kubecek info.n_stats = rc; 7349ce48e5aSMichal Kubecek rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 7359ce48e5aSMichal Kubecek if (rc >= 0) 7369ce48e5aSMichal Kubecek info.n_priv_flags = rc; 7379ce48e5aSMichal Kubecek } 7389ce48e5aSMichal Kubecek if (ops->get_regs_len) { 7399ce48e5aSMichal Kubecek int ret = ops->get_regs_len(dev); 7409ce48e5aSMichal Kubecek 7419ce48e5aSMichal Kubecek if (ret > 0) 7429ce48e5aSMichal Kubecek info.regdump_len = ret; 7439ce48e5aSMichal Kubecek } 7449ce48e5aSMichal Kubecek 7459ce48e5aSMichal Kubecek if (ops->get_eeprom_len) 7469ce48e5aSMichal Kubecek info.eedump_len = ops->get_eeprom_len(dev); 7479ce48e5aSMichal Kubecek 7489ce48e5aSMichal Kubecek if (!info.fw_version[0]) 7499ce48e5aSMichal Kubecek devlink_compat_running_version(dev, info.fw_version, 7509ce48e5aSMichal Kubecek sizeof(info.fw_version)); 7519ce48e5aSMichal Kubecek 7529ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &info, sizeof(info))) 7539ce48e5aSMichal Kubecek return -EFAULT; 7549ce48e5aSMichal Kubecek return 0; 7559ce48e5aSMichal Kubecek } 7569ce48e5aSMichal Kubecek 7579ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 7589ce48e5aSMichal Kubecek void __user *useraddr) 7599ce48e5aSMichal Kubecek { 7609ce48e5aSMichal Kubecek struct ethtool_sset_info info; 7619ce48e5aSMichal Kubecek u64 sset_mask; 7629ce48e5aSMichal Kubecek int i, idx = 0, n_bits = 0, ret, rc; 7639ce48e5aSMichal Kubecek u32 *info_buf = NULL; 7649ce48e5aSMichal Kubecek 7659ce48e5aSMichal Kubecek if (copy_from_user(&info, useraddr, sizeof(info))) 7669ce48e5aSMichal Kubecek return -EFAULT; 7679ce48e5aSMichal Kubecek 7689ce48e5aSMichal Kubecek /* store copy of mask, because we zero struct later on */ 7699ce48e5aSMichal Kubecek sset_mask = info.sset_mask; 7709ce48e5aSMichal Kubecek if (!sset_mask) 7719ce48e5aSMichal Kubecek return 0; 7729ce48e5aSMichal Kubecek 7739ce48e5aSMichal Kubecek /* calculate size of return buffer */ 7749ce48e5aSMichal Kubecek n_bits = hweight64(sset_mask); 7759ce48e5aSMichal Kubecek 7769ce48e5aSMichal Kubecek memset(&info, 0, sizeof(info)); 7779ce48e5aSMichal Kubecek info.cmd = ETHTOOL_GSSET_INFO; 7789ce48e5aSMichal Kubecek 7799ce48e5aSMichal Kubecek info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 7809ce48e5aSMichal Kubecek if (!info_buf) 7819ce48e5aSMichal Kubecek return -ENOMEM; 7829ce48e5aSMichal Kubecek 7839ce48e5aSMichal Kubecek /* 7849ce48e5aSMichal Kubecek * fill return buffer based on input bitmask and successful 7859ce48e5aSMichal Kubecek * get_sset_count return 7869ce48e5aSMichal Kubecek */ 7879ce48e5aSMichal Kubecek for (i = 0; i < 64; i++) { 7889ce48e5aSMichal Kubecek if (!(sset_mask & (1ULL << i))) 7899ce48e5aSMichal Kubecek continue; 7909ce48e5aSMichal Kubecek 7919ce48e5aSMichal Kubecek rc = __ethtool_get_sset_count(dev, i); 7929ce48e5aSMichal Kubecek if (rc >= 0) { 7939ce48e5aSMichal Kubecek info.sset_mask |= (1ULL << i); 7949ce48e5aSMichal Kubecek info_buf[idx++] = rc; 7959ce48e5aSMichal Kubecek } 7969ce48e5aSMichal Kubecek } 7979ce48e5aSMichal Kubecek 7989ce48e5aSMichal Kubecek ret = -EFAULT; 7999ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &info, sizeof(info))) 8009ce48e5aSMichal Kubecek goto out; 8019ce48e5aSMichal Kubecek 8029ce48e5aSMichal Kubecek useraddr += offsetof(struct ethtool_sset_info, data); 803*ed717613SGustavo A. R. Silva if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) 8049ce48e5aSMichal Kubecek goto out; 8059ce48e5aSMichal Kubecek 8069ce48e5aSMichal Kubecek ret = 0; 8079ce48e5aSMichal Kubecek 8089ce48e5aSMichal Kubecek out: 8099ce48e5aSMichal Kubecek kfree(info_buf); 8109ce48e5aSMichal Kubecek return ret; 8119ce48e5aSMichal Kubecek } 8129ce48e5aSMichal Kubecek 813dd98d289SArnd Bergmann static noinline_for_stack int 814dd98d289SArnd Bergmann ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, 815dd98d289SArnd Bergmann const struct compat_ethtool_rxnfc __user *useraddr, 816dd98d289SArnd Bergmann size_t size) 817dd98d289SArnd Bergmann { 818dd98d289SArnd Bergmann struct compat_ethtool_rxnfc crxnfc = {}; 819dd98d289SArnd Bergmann 820dd98d289SArnd Bergmann /* We expect there to be holes between fs.m_ext and 821dd98d289SArnd Bergmann * fs.ring_cookie and at the end of fs, but nowhere else. 822dd98d289SArnd Bergmann * On non-x86, no conversion should be needed. 823dd98d289SArnd Bergmann */ 824dd98d289SArnd Bergmann BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && 825dd98d289SArnd Bergmann sizeof(struct compat_ethtool_rxnfc) != 826dd98d289SArnd Bergmann sizeof(struct ethtool_rxnfc)); 827dd98d289SArnd Bergmann BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + 828dd98d289SArnd Bergmann sizeof(useraddr->fs.m_ext) != 829dd98d289SArnd Bergmann offsetof(struct ethtool_rxnfc, fs.m_ext) + 830dd98d289SArnd Bergmann sizeof(rxnfc->fs.m_ext)); 831dd98d289SArnd Bergmann BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - 832dd98d289SArnd Bergmann offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != 833dd98d289SArnd Bergmann offsetof(struct ethtool_rxnfc, fs.location) - 834dd98d289SArnd Bergmann offsetof(struct ethtool_rxnfc, fs.ring_cookie)); 835dd98d289SArnd Bergmann 836dd98d289SArnd Bergmann if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) 837dd98d289SArnd Bergmann return -EFAULT; 838dd98d289SArnd Bergmann 839dd98d289SArnd Bergmann *rxnfc = (struct ethtool_rxnfc) { 840dd98d289SArnd Bergmann .cmd = crxnfc.cmd, 841dd98d289SArnd Bergmann .flow_type = crxnfc.flow_type, 842dd98d289SArnd Bergmann .data = crxnfc.data, 843dd98d289SArnd Bergmann .fs = { 844dd98d289SArnd Bergmann .flow_type = crxnfc.fs.flow_type, 845dd98d289SArnd Bergmann .h_u = crxnfc.fs.h_u, 846dd98d289SArnd Bergmann .h_ext = crxnfc.fs.h_ext, 847dd98d289SArnd Bergmann .m_u = crxnfc.fs.m_u, 848dd98d289SArnd Bergmann .m_ext = crxnfc.fs.m_ext, 849dd98d289SArnd Bergmann .ring_cookie = crxnfc.fs.ring_cookie, 850dd98d289SArnd Bergmann .location = crxnfc.fs.location, 851dd98d289SArnd Bergmann }, 852dd98d289SArnd Bergmann .rule_cnt = crxnfc.rule_cnt, 853dd98d289SArnd Bergmann }; 854dd98d289SArnd Bergmann 855dd98d289SArnd Bergmann return 0; 856dd98d289SArnd Bergmann } 857dd98d289SArnd Bergmann 858dd98d289SArnd Bergmann static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, 859dd98d289SArnd Bergmann const void __user *useraddr, 860dd98d289SArnd Bergmann size_t size) 861dd98d289SArnd Bergmann { 862dd98d289SArnd Bergmann if (compat_need_64bit_alignment_fixup()) 863dd98d289SArnd Bergmann return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); 864dd98d289SArnd Bergmann 865dd98d289SArnd Bergmann if (copy_from_user(rxnfc, useraddr, size)) 866dd98d289SArnd Bergmann return -EFAULT; 867dd98d289SArnd Bergmann 868dd98d289SArnd Bergmann return 0; 869dd98d289SArnd Bergmann } 870dd98d289SArnd Bergmann 871dd98d289SArnd Bergmann static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, 872dd98d289SArnd Bergmann const struct ethtool_rxnfc *rxnfc, 873dd98d289SArnd Bergmann size_t size, const u32 *rule_buf) 874dd98d289SArnd Bergmann { 875dd98d289SArnd Bergmann struct compat_ethtool_rxnfc crxnfc; 876dd98d289SArnd Bergmann 877dd98d289SArnd Bergmann memset(&crxnfc, 0, sizeof(crxnfc)); 878dd98d289SArnd Bergmann crxnfc = (struct compat_ethtool_rxnfc) { 879dd98d289SArnd Bergmann .cmd = rxnfc->cmd, 880dd98d289SArnd Bergmann .flow_type = rxnfc->flow_type, 881dd98d289SArnd Bergmann .data = rxnfc->data, 882dd98d289SArnd Bergmann .fs = { 883dd98d289SArnd Bergmann .flow_type = rxnfc->fs.flow_type, 884dd98d289SArnd Bergmann .h_u = rxnfc->fs.h_u, 885dd98d289SArnd Bergmann .h_ext = rxnfc->fs.h_ext, 886dd98d289SArnd Bergmann .m_u = rxnfc->fs.m_u, 887dd98d289SArnd Bergmann .m_ext = rxnfc->fs.m_ext, 888dd98d289SArnd Bergmann .ring_cookie = rxnfc->fs.ring_cookie, 889dd98d289SArnd Bergmann .location = rxnfc->fs.location, 890dd98d289SArnd Bergmann }, 891dd98d289SArnd Bergmann .rule_cnt = rxnfc->rule_cnt, 892dd98d289SArnd Bergmann }; 893dd98d289SArnd Bergmann 894dd98d289SArnd Bergmann if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) 895dd98d289SArnd Bergmann return -EFAULT; 896dd98d289SArnd Bergmann 897dd98d289SArnd Bergmann return 0; 898dd98d289SArnd Bergmann } 899dd98d289SArnd Bergmann 900dd98d289SArnd Bergmann static int ethtool_rxnfc_copy_to_user(void __user *useraddr, 901dd98d289SArnd Bergmann const struct ethtool_rxnfc *rxnfc, 902dd98d289SArnd Bergmann size_t size, const u32 *rule_buf) 903dd98d289SArnd Bergmann { 904dd98d289SArnd Bergmann int ret; 905dd98d289SArnd Bergmann 906dd98d289SArnd Bergmann if (compat_need_64bit_alignment_fixup()) { 907dd98d289SArnd Bergmann ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, 908dd98d289SArnd Bergmann rule_buf); 909dd98d289SArnd Bergmann useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); 910dd98d289SArnd Bergmann } else { 9119b29a161SSaeed Mahameed ret = copy_to_user(useraddr, rxnfc, size); 912dd98d289SArnd Bergmann useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 913dd98d289SArnd Bergmann } 914dd98d289SArnd Bergmann 915dd98d289SArnd Bergmann if (ret) 916dd98d289SArnd Bergmann return -EFAULT; 917dd98d289SArnd Bergmann 918dd98d289SArnd Bergmann if (rule_buf) { 919dd98d289SArnd Bergmann if (copy_to_user(useraddr, rule_buf, 920dd98d289SArnd Bergmann rxnfc->rule_cnt * sizeof(u32))) 921dd98d289SArnd Bergmann return -EFAULT; 922dd98d289SArnd Bergmann } 923dd98d289SArnd Bergmann 924dd98d289SArnd Bergmann return 0; 925dd98d289SArnd Bergmann } 926dd98d289SArnd Bergmann 9279ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 9289ce48e5aSMichal Kubecek u32 cmd, void __user *useraddr) 9299ce48e5aSMichal Kubecek { 9309ce48e5aSMichal Kubecek struct ethtool_rxnfc info; 9319ce48e5aSMichal Kubecek size_t info_size = sizeof(info); 9329ce48e5aSMichal Kubecek int rc; 9339ce48e5aSMichal Kubecek 9349ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_rxnfc) 9359ce48e5aSMichal Kubecek return -EOPNOTSUPP; 9369ce48e5aSMichal Kubecek 9379ce48e5aSMichal Kubecek /* struct ethtool_rxnfc was originally defined for 9389ce48e5aSMichal Kubecek * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 9399ce48e5aSMichal Kubecek * members. User-space might still be using that 9409ce48e5aSMichal Kubecek * definition. */ 9419ce48e5aSMichal Kubecek if (cmd == ETHTOOL_SRXFH) 9429ce48e5aSMichal Kubecek info_size = (offsetof(struct ethtool_rxnfc, data) + 9439ce48e5aSMichal Kubecek sizeof(info.data)); 9449ce48e5aSMichal Kubecek 945dd98d289SArnd Bergmann if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 9469ce48e5aSMichal Kubecek return -EFAULT; 9479ce48e5aSMichal Kubecek 9489ce48e5aSMichal Kubecek rc = dev->ethtool_ops->set_rxnfc(dev, &info); 9499ce48e5aSMichal Kubecek if (rc) 9509ce48e5aSMichal Kubecek return rc; 9519ce48e5aSMichal Kubecek 9529ce48e5aSMichal Kubecek if (cmd == ETHTOOL_SRXCLSRLINS && 953dd98d289SArnd Bergmann ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) 9549ce48e5aSMichal Kubecek return -EFAULT; 9559ce48e5aSMichal Kubecek 9569ce48e5aSMichal Kubecek return 0; 9579ce48e5aSMichal Kubecek } 9589ce48e5aSMichal Kubecek 9599ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 9609ce48e5aSMichal Kubecek u32 cmd, void __user *useraddr) 9619ce48e5aSMichal Kubecek { 9629ce48e5aSMichal Kubecek struct ethtool_rxnfc info; 9639ce48e5aSMichal Kubecek size_t info_size = sizeof(info); 9649ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 9659ce48e5aSMichal Kubecek int ret; 9669ce48e5aSMichal Kubecek void *rule_buf = NULL; 9679ce48e5aSMichal Kubecek 9689ce48e5aSMichal Kubecek if (!ops->get_rxnfc) 9699ce48e5aSMichal Kubecek return -EOPNOTSUPP; 9709ce48e5aSMichal Kubecek 9719ce48e5aSMichal Kubecek /* struct ethtool_rxnfc was originally defined for 9729ce48e5aSMichal Kubecek * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 9739ce48e5aSMichal Kubecek * members. User-space might still be using that 9749ce48e5aSMichal Kubecek * definition. */ 9759ce48e5aSMichal Kubecek if (cmd == ETHTOOL_GRXFH) 9769ce48e5aSMichal Kubecek info_size = (offsetof(struct ethtool_rxnfc, data) + 9779ce48e5aSMichal Kubecek sizeof(info.data)); 9789ce48e5aSMichal Kubecek 979dd98d289SArnd Bergmann if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 9809ce48e5aSMichal Kubecek return -EFAULT; 9819ce48e5aSMichal Kubecek 9829ce48e5aSMichal Kubecek /* If FLOW_RSS was requested then user-space must be using the 9839ce48e5aSMichal Kubecek * new definition, as FLOW_RSS is newer. 9849ce48e5aSMichal Kubecek */ 9859ce48e5aSMichal Kubecek if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) { 9869ce48e5aSMichal Kubecek info_size = sizeof(info); 987dd98d289SArnd Bergmann if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) 9889ce48e5aSMichal Kubecek return -EFAULT; 9899ce48e5aSMichal Kubecek /* Since malicious users may modify the original data, 9909ce48e5aSMichal Kubecek * we need to check whether FLOW_RSS is still requested. 9919ce48e5aSMichal Kubecek */ 9929ce48e5aSMichal Kubecek if (!(info.flow_type & FLOW_RSS)) 9939ce48e5aSMichal Kubecek return -EINVAL; 9949ce48e5aSMichal Kubecek } 9959ce48e5aSMichal Kubecek 9969ce48e5aSMichal Kubecek if (info.cmd != cmd) 9979ce48e5aSMichal Kubecek return -EINVAL; 9989ce48e5aSMichal Kubecek 9999ce48e5aSMichal Kubecek if (info.cmd == ETHTOOL_GRXCLSRLALL) { 10009ce48e5aSMichal Kubecek if (info.rule_cnt > 0) { 10019ce48e5aSMichal Kubecek if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 10029ce48e5aSMichal Kubecek rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 10039ce48e5aSMichal Kubecek GFP_USER); 10049ce48e5aSMichal Kubecek if (!rule_buf) 10059ce48e5aSMichal Kubecek return -ENOMEM; 10069ce48e5aSMichal Kubecek } 10079ce48e5aSMichal Kubecek } 10089ce48e5aSMichal Kubecek 10099ce48e5aSMichal Kubecek ret = ops->get_rxnfc(dev, &info, rule_buf); 10109ce48e5aSMichal Kubecek if (ret < 0) 10119ce48e5aSMichal Kubecek goto err_out; 10129ce48e5aSMichal Kubecek 1013dd98d289SArnd Bergmann ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); 10149ce48e5aSMichal Kubecek err_out: 10159ce48e5aSMichal Kubecek kfree(rule_buf); 10169ce48e5aSMichal Kubecek 10179ce48e5aSMichal Kubecek return ret; 10189ce48e5aSMichal Kubecek } 10199ce48e5aSMichal Kubecek 10209ce48e5aSMichal Kubecek static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 10219ce48e5aSMichal Kubecek struct ethtool_rxnfc *rx_rings, 10229ce48e5aSMichal Kubecek u32 size) 10239ce48e5aSMichal Kubecek { 10249ce48e5aSMichal Kubecek int i; 10259ce48e5aSMichal Kubecek 1026*ed717613SGustavo A. R. Silva if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) 10279ce48e5aSMichal Kubecek return -EFAULT; 10289ce48e5aSMichal Kubecek 10299ce48e5aSMichal Kubecek /* Validate ring indices */ 10309ce48e5aSMichal Kubecek for (i = 0; i < size; i++) 10319ce48e5aSMichal Kubecek if (indir[i] >= rx_rings->data) 10329ce48e5aSMichal Kubecek return -EINVAL; 10339ce48e5aSMichal Kubecek 10349ce48e5aSMichal Kubecek return 0; 10359ce48e5aSMichal Kubecek } 10369ce48e5aSMichal Kubecek 10379ce48e5aSMichal Kubecek u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 10389ce48e5aSMichal Kubecek 10399ce48e5aSMichal Kubecek void netdev_rss_key_fill(void *buffer, size_t len) 10409ce48e5aSMichal Kubecek { 10419ce48e5aSMichal Kubecek BUG_ON(len > sizeof(netdev_rss_key)); 10429ce48e5aSMichal Kubecek net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 10439ce48e5aSMichal Kubecek memcpy(buffer, netdev_rss_key, len); 10449ce48e5aSMichal Kubecek } 10459ce48e5aSMichal Kubecek EXPORT_SYMBOL(netdev_rss_key_fill); 10469ce48e5aSMichal Kubecek 10479ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 10489ce48e5aSMichal Kubecek void __user *useraddr) 10499ce48e5aSMichal Kubecek { 10509ce48e5aSMichal Kubecek u32 user_size, dev_size; 10519ce48e5aSMichal Kubecek u32 *indir; 10529ce48e5aSMichal Kubecek int ret; 10539ce48e5aSMichal Kubecek 10549ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_rxfh_indir_size || 10559ce48e5aSMichal Kubecek !dev->ethtool_ops->get_rxfh) 10569ce48e5aSMichal Kubecek return -EOPNOTSUPP; 10579ce48e5aSMichal Kubecek dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 10589ce48e5aSMichal Kubecek if (dev_size == 0) 10599ce48e5aSMichal Kubecek return -EOPNOTSUPP; 10609ce48e5aSMichal Kubecek 10619ce48e5aSMichal Kubecek if (copy_from_user(&user_size, 10629ce48e5aSMichal Kubecek useraddr + offsetof(struct ethtool_rxfh_indir, size), 10639ce48e5aSMichal Kubecek sizeof(user_size))) 10649ce48e5aSMichal Kubecek return -EFAULT; 10659ce48e5aSMichal Kubecek 10669ce48e5aSMichal Kubecek if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 10679ce48e5aSMichal Kubecek &dev_size, sizeof(dev_size))) 10689ce48e5aSMichal Kubecek return -EFAULT; 10699ce48e5aSMichal Kubecek 10709ce48e5aSMichal Kubecek /* If the user buffer size is 0, this is just a query for the 10719ce48e5aSMichal Kubecek * device table size. Otherwise, if it's smaller than the 10729ce48e5aSMichal Kubecek * device table size it's an error. 10739ce48e5aSMichal Kubecek */ 10749ce48e5aSMichal Kubecek if (user_size < dev_size) 10759ce48e5aSMichal Kubecek return user_size == 0 ? 0 : -EINVAL; 10769ce48e5aSMichal Kubecek 10779ce48e5aSMichal Kubecek indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 10789ce48e5aSMichal Kubecek if (!indir) 10799ce48e5aSMichal Kubecek return -ENOMEM; 10809ce48e5aSMichal Kubecek 10819ce48e5aSMichal Kubecek ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); 10829ce48e5aSMichal Kubecek if (ret) 10839ce48e5aSMichal Kubecek goto out; 10849ce48e5aSMichal Kubecek 10859ce48e5aSMichal Kubecek if (copy_to_user(useraddr + 10869ce48e5aSMichal Kubecek offsetof(struct ethtool_rxfh_indir, ring_index[0]), 10879ce48e5aSMichal Kubecek indir, dev_size * sizeof(indir[0]))) 10889ce48e5aSMichal Kubecek ret = -EFAULT; 10899ce48e5aSMichal Kubecek 10909ce48e5aSMichal Kubecek out: 10919ce48e5aSMichal Kubecek kfree(indir); 10929ce48e5aSMichal Kubecek return ret; 10939ce48e5aSMichal Kubecek } 10949ce48e5aSMichal Kubecek 10959ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 10969ce48e5aSMichal Kubecek void __user *useraddr) 10979ce48e5aSMichal Kubecek { 10989ce48e5aSMichal Kubecek struct ethtool_rxnfc rx_rings; 10999ce48e5aSMichal Kubecek u32 user_size, dev_size, i; 11009ce48e5aSMichal Kubecek u32 *indir; 11019ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 11029ce48e5aSMichal Kubecek int ret; 11039ce48e5aSMichal Kubecek u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 11049ce48e5aSMichal Kubecek 11059ce48e5aSMichal Kubecek if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 11069ce48e5aSMichal Kubecek !ops->get_rxnfc) 11079ce48e5aSMichal Kubecek return -EOPNOTSUPP; 11089ce48e5aSMichal Kubecek 11099ce48e5aSMichal Kubecek dev_size = ops->get_rxfh_indir_size(dev); 11109ce48e5aSMichal Kubecek if (dev_size == 0) 11119ce48e5aSMichal Kubecek return -EOPNOTSUPP; 11129ce48e5aSMichal Kubecek 11139ce48e5aSMichal Kubecek if (copy_from_user(&user_size, 11149ce48e5aSMichal Kubecek useraddr + offsetof(struct ethtool_rxfh_indir, size), 11159ce48e5aSMichal Kubecek sizeof(user_size))) 11169ce48e5aSMichal Kubecek return -EFAULT; 11179ce48e5aSMichal Kubecek 11189ce48e5aSMichal Kubecek if (user_size != 0 && user_size != dev_size) 11199ce48e5aSMichal Kubecek return -EINVAL; 11209ce48e5aSMichal Kubecek 11219ce48e5aSMichal Kubecek indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 11229ce48e5aSMichal Kubecek if (!indir) 11239ce48e5aSMichal Kubecek return -ENOMEM; 11249ce48e5aSMichal Kubecek 11259ce48e5aSMichal Kubecek rx_rings.cmd = ETHTOOL_GRXRINGS; 11269ce48e5aSMichal Kubecek ret = ops->get_rxnfc(dev, &rx_rings, NULL); 11279ce48e5aSMichal Kubecek if (ret) 11289ce48e5aSMichal Kubecek goto out; 11299ce48e5aSMichal Kubecek 11309ce48e5aSMichal Kubecek if (user_size == 0) { 11319ce48e5aSMichal Kubecek for (i = 0; i < dev_size; i++) 11329ce48e5aSMichal Kubecek indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 11339ce48e5aSMichal Kubecek } else { 11349ce48e5aSMichal Kubecek ret = ethtool_copy_validate_indir(indir, 11359ce48e5aSMichal Kubecek useraddr + ringidx_offset, 11369ce48e5aSMichal Kubecek &rx_rings, 11379ce48e5aSMichal Kubecek dev_size); 11389ce48e5aSMichal Kubecek if (ret) 11399ce48e5aSMichal Kubecek goto out; 11409ce48e5aSMichal Kubecek } 11419ce48e5aSMichal Kubecek 11429ce48e5aSMichal Kubecek ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); 11439ce48e5aSMichal Kubecek if (ret) 11449ce48e5aSMichal Kubecek goto out; 11459ce48e5aSMichal Kubecek 11469ce48e5aSMichal Kubecek /* indicate whether rxfh was set to default */ 11479ce48e5aSMichal Kubecek if (user_size == 0) 11489ce48e5aSMichal Kubecek dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 11499ce48e5aSMichal Kubecek else 11509ce48e5aSMichal Kubecek dev->priv_flags |= IFF_RXFH_CONFIGURED; 11519ce48e5aSMichal Kubecek 11529ce48e5aSMichal Kubecek out: 11539ce48e5aSMichal Kubecek kfree(indir); 11549ce48e5aSMichal Kubecek return ret; 11559ce48e5aSMichal Kubecek } 11569ce48e5aSMichal Kubecek 11579ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 11589ce48e5aSMichal Kubecek void __user *useraddr) 11599ce48e5aSMichal Kubecek { 11609ce48e5aSMichal Kubecek int ret; 11619ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 11629ce48e5aSMichal Kubecek u32 user_indir_size, user_key_size; 11639ce48e5aSMichal Kubecek u32 dev_indir_size = 0, dev_key_size = 0; 11649ce48e5aSMichal Kubecek struct ethtool_rxfh rxfh; 11659ce48e5aSMichal Kubecek u32 total_size; 11669ce48e5aSMichal Kubecek u32 indir_bytes; 11679ce48e5aSMichal Kubecek u32 *indir = NULL; 11689ce48e5aSMichal Kubecek u8 dev_hfunc = 0; 11699ce48e5aSMichal Kubecek u8 *hkey = NULL; 11709ce48e5aSMichal Kubecek u8 *rss_config; 11719ce48e5aSMichal Kubecek 11729ce48e5aSMichal Kubecek if (!ops->get_rxfh) 11739ce48e5aSMichal Kubecek return -EOPNOTSUPP; 11749ce48e5aSMichal Kubecek 11759ce48e5aSMichal Kubecek if (ops->get_rxfh_indir_size) 11769ce48e5aSMichal Kubecek dev_indir_size = ops->get_rxfh_indir_size(dev); 11779ce48e5aSMichal Kubecek if (ops->get_rxfh_key_size) 11789ce48e5aSMichal Kubecek dev_key_size = ops->get_rxfh_key_size(dev); 11799ce48e5aSMichal Kubecek 11809ce48e5aSMichal Kubecek if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 11819ce48e5aSMichal Kubecek return -EFAULT; 11829ce48e5aSMichal Kubecek user_indir_size = rxfh.indir_size; 11839ce48e5aSMichal Kubecek user_key_size = rxfh.key_size; 11849ce48e5aSMichal Kubecek 11859ce48e5aSMichal Kubecek /* Check that reserved fields are 0 for now */ 11869ce48e5aSMichal Kubecek if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 11879ce48e5aSMichal Kubecek return -EINVAL; 11889ce48e5aSMichal Kubecek /* Most drivers don't handle rss_context, check it's 0 as well */ 11899ce48e5aSMichal Kubecek if (rxfh.rss_context && !ops->get_rxfh_context) 11909ce48e5aSMichal Kubecek return -EOPNOTSUPP; 11919ce48e5aSMichal Kubecek 11929ce48e5aSMichal Kubecek rxfh.indir_size = dev_indir_size; 11939ce48e5aSMichal Kubecek rxfh.key_size = dev_key_size; 11949ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 11959ce48e5aSMichal Kubecek return -EFAULT; 11969ce48e5aSMichal Kubecek 11979ce48e5aSMichal Kubecek if ((user_indir_size && (user_indir_size != dev_indir_size)) || 11989ce48e5aSMichal Kubecek (user_key_size && (user_key_size != dev_key_size))) 11999ce48e5aSMichal Kubecek return -EINVAL; 12009ce48e5aSMichal Kubecek 12019ce48e5aSMichal Kubecek indir_bytes = user_indir_size * sizeof(indir[0]); 12029ce48e5aSMichal Kubecek total_size = indir_bytes + user_key_size; 12039ce48e5aSMichal Kubecek rss_config = kzalloc(total_size, GFP_USER); 12049ce48e5aSMichal Kubecek if (!rss_config) 12059ce48e5aSMichal Kubecek return -ENOMEM; 12069ce48e5aSMichal Kubecek 12079ce48e5aSMichal Kubecek if (user_indir_size) 12089ce48e5aSMichal Kubecek indir = (u32 *)rss_config; 12099ce48e5aSMichal Kubecek 12109ce48e5aSMichal Kubecek if (user_key_size) 12119ce48e5aSMichal Kubecek hkey = rss_config + indir_bytes; 12129ce48e5aSMichal Kubecek 12139ce48e5aSMichal Kubecek if (rxfh.rss_context) 12149ce48e5aSMichal Kubecek ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey, 12159ce48e5aSMichal Kubecek &dev_hfunc, 12169ce48e5aSMichal Kubecek rxfh.rss_context); 12179ce48e5aSMichal Kubecek else 12189ce48e5aSMichal Kubecek ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); 12199ce48e5aSMichal Kubecek if (ret) 12209ce48e5aSMichal Kubecek goto out; 12219ce48e5aSMichal Kubecek 12229ce48e5aSMichal Kubecek if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 12239ce48e5aSMichal Kubecek &dev_hfunc, sizeof(rxfh.hfunc))) { 12249ce48e5aSMichal Kubecek ret = -EFAULT; 12259ce48e5aSMichal Kubecek } else if (copy_to_user(useraddr + 12269ce48e5aSMichal Kubecek offsetof(struct ethtool_rxfh, rss_config[0]), 12279ce48e5aSMichal Kubecek rss_config, total_size)) { 12289ce48e5aSMichal Kubecek ret = -EFAULT; 12299ce48e5aSMichal Kubecek } 12309ce48e5aSMichal Kubecek out: 12319ce48e5aSMichal Kubecek kfree(rss_config); 12329ce48e5aSMichal Kubecek 12339ce48e5aSMichal Kubecek return ret; 12349ce48e5aSMichal Kubecek } 12359ce48e5aSMichal Kubecek 12369ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 12379ce48e5aSMichal Kubecek void __user *useraddr) 12389ce48e5aSMichal Kubecek { 12399ce48e5aSMichal Kubecek int ret; 12409ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 12419ce48e5aSMichal Kubecek struct ethtool_rxnfc rx_rings; 12429ce48e5aSMichal Kubecek struct ethtool_rxfh rxfh; 12439ce48e5aSMichal Kubecek u32 dev_indir_size = 0, dev_key_size = 0, i; 12449ce48e5aSMichal Kubecek u32 *indir = NULL, indir_bytes = 0; 12459ce48e5aSMichal Kubecek u8 *hkey = NULL; 12469ce48e5aSMichal Kubecek u8 *rss_config; 12479ce48e5aSMichal Kubecek u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 12489ce48e5aSMichal Kubecek bool delete = false; 12499ce48e5aSMichal Kubecek 12509ce48e5aSMichal Kubecek if (!ops->get_rxnfc || !ops->set_rxfh) 12519ce48e5aSMichal Kubecek return -EOPNOTSUPP; 12529ce48e5aSMichal Kubecek 12539ce48e5aSMichal Kubecek if (ops->get_rxfh_indir_size) 12549ce48e5aSMichal Kubecek dev_indir_size = ops->get_rxfh_indir_size(dev); 12559ce48e5aSMichal Kubecek if (ops->get_rxfh_key_size) 12569ce48e5aSMichal Kubecek dev_key_size = ops->get_rxfh_key_size(dev); 12579ce48e5aSMichal Kubecek 12589ce48e5aSMichal Kubecek if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 12599ce48e5aSMichal Kubecek return -EFAULT; 12609ce48e5aSMichal Kubecek 12619ce48e5aSMichal Kubecek /* Check that reserved fields are 0 for now */ 12629ce48e5aSMichal Kubecek if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 12639ce48e5aSMichal Kubecek return -EINVAL; 12649ce48e5aSMichal Kubecek /* Most drivers don't handle rss_context, check it's 0 as well */ 12659ce48e5aSMichal Kubecek if (rxfh.rss_context && !ops->set_rxfh_context) 12669ce48e5aSMichal Kubecek return -EOPNOTSUPP; 12679ce48e5aSMichal Kubecek 12689ce48e5aSMichal Kubecek /* If either indir, hash key or function is valid, proceed further. 12699ce48e5aSMichal Kubecek * Must request at least one change: indir size, hash key or function. 12709ce48e5aSMichal Kubecek */ 12719ce48e5aSMichal Kubecek if ((rxfh.indir_size && 12729ce48e5aSMichal Kubecek rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 12739ce48e5aSMichal Kubecek rxfh.indir_size != dev_indir_size) || 12749ce48e5aSMichal Kubecek (rxfh.key_size && (rxfh.key_size != dev_key_size)) || 12759ce48e5aSMichal Kubecek (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 12769ce48e5aSMichal Kubecek rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) 12779ce48e5aSMichal Kubecek return -EINVAL; 12789ce48e5aSMichal Kubecek 12799ce48e5aSMichal Kubecek if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 12809ce48e5aSMichal Kubecek indir_bytes = dev_indir_size * sizeof(indir[0]); 12819ce48e5aSMichal Kubecek 12829ce48e5aSMichal Kubecek rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); 12839ce48e5aSMichal Kubecek if (!rss_config) 12849ce48e5aSMichal Kubecek return -ENOMEM; 12859ce48e5aSMichal Kubecek 12869ce48e5aSMichal Kubecek rx_rings.cmd = ETHTOOL_GRXRINGS; 12879ce48e5aSMichal Kubecek ret = ops->get_rxnfc(dev, &rx_rings, NULL); 12889ce48e5aSMichal Kubecek if (ret) 12899ce48e5aSMichal Kubecek goto out; 12909ce48e5aSMichal Kubecek 12919ce48e5aSMichal Kubecek /* rxfh.indir_size == 0 means reset the indir table to default (master 12929ce48e5aSMichal Kubecek * context) or delete the context (other RSS contexts). 12939ce48e5aSMichal Kubecek * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 12949ce48e5aSMichal Kubecek */ 12959ce48e5aSMichal Kubecek if (rxfh.indir_size && 12969ce48e5aSMichal Kubecek rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 12979ce48e5aSMichal Kubecek indir = (u32 *)rss_config; 12989ce48e5aSMichal Kubecek ret = ethtool_copy_validate_indir(indir, 12999ce48e5aSMichal Kubecek useraddr + rss_cfg_offset, 13009ce48e5aSMichal Kubecek &rx_rings, 13019ce48e5aSMichal Kubecek rxfh.indir_size); 13029ce48e5aSMichal Kubecek if (ret) 13039ce48e5aSMichal Kubecek goto out; 13049ce48e5aSMichal Kubecek } else if (rxfh.indir_size == 0) { 13059ce48e5aSMichal Kubecek if (rxfh.rss_context == 0) { 13069ce48e5aSMichal Kubecek indir = (u32 *)rss_config; 13079ce48e5aSMichal Kubecek for (i = 0; i < dev_indir_size; i++) 13089ce48e5aSMichal Kubecek indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 13099ce48e5aSMichal Kubecek } else { 13109ce48e5aSMichal Kubecek delete = true; 13119ce48e5aSMichal Kubecek } 13129ce48e5aSMichal Kubecek } 13139ce48e5aSMichal Kubecek 13149ce48e5aSMichal Kubecek if (rxfh.key_size) { 13159ce48e5aSMichal Kubecek hkey = rss_config + indir_bytes; 13169ce48e5aSMichal Kubecek if (copy_from_user(hkey, 13179ce48e5aSMichal Kubecek useraddr + rss_cfg_offset + indir_bytes, 13189ce48e5aSMichal Kubecek rxfh.key_size)) { 13199ce48e5aSMichal Kubecek ret = -EFAULT; 13209ce48e5aSMichal Kubecek goto out; 13219ce48e5aSMichal Kubecek } 13229ce48e5aSMichal Kubecek } 13239ce48e5aSMichal Kubecek 13249ce48e5aSMichal Kubecek if (rxfh.rss_context) 13259ce48e5aSMichal Kubecek ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc, 13269ce48e5aSMichal Kubecek &rxfh.rss_context, delete); 13279ce48e5aSMichal Kubecek else 13289ce48e5aSMichal Kubecek ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); 13299ce48e5aSMichal Kubecek if (ret) 13309ce48e5aSMichal Kubecek goto out; 13319ce48e5aSMichal Kubecek 13329ce48e5aSMichal Kubecek if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 13339ce48e5aSMichal Kubecek &rxfh.rss_context, sizeof(rxfh.rss_context))) 13349ce48e5aSMichal Kubecek ret = -EFAULT; 13359ce48e5aSMichal Kubecek 13369ce48e5aSMichal Kubecek if (!rxfh.rss_context) { 13379ce48e5aSMichal Kubecek /* indicate whether rxfh was set to default */ 13389ce48e5aSMichal Kubecek if (rxfh.indir_size == 0) 13399ce48e5aSMichal Kubecek dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 13409ce48e5aSMichal Kubecek else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 13419ce48e5aSMichal Kubecek dev->priv_flags |= IFF_RXFH_CONFIGURED; 13429ce48e5aSMichal Kubecek } 13439ce48e5aSMichal Kubecek 13449ce48e5aSMichal Kubecek out: 13459ce48e5aSMichal Kubecek kfree(rss_config); 13469ce48e5aSMichal Kubecek return ret; 13479ce48e5aSMichal Kubecek } 13489ce48e5aSMichal Kubecek 13499ce48e5aSMichal Kubecek static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 13509ce48e5aSMichal Kubecek { 13519ce48e5aSMichal Kubecek struct ethtool_regs regs; 13529ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 13539ce48e5aSMichal Kubecek void *regbuf; 13549ce48e5aSMichal Kubecek int reglen, ret; 13559ce48e5aSMichal Kubecek 13569ce48e5aSMichal Kubecek if (!ops->get_regs || !ops->get_regs_len) 13579ce48e5aSMichal Kubecek return -EOPNOTSUPP; 13589ce48e5aSMichal Kubecek 13599ce48e5aSMichal Kubecek if (copy_from_user(®s, useraddr, sizeof(regs))) 13609ce48e5aSMichal Kubecek return -EFAULT; 13619ce48e5aSMichal Kubecek 13629ce48e5aSMichal Kubecek reglen = ops->get_regs_len(dev); 13639ce48e5aSMichal Kubecek if (reglen <= 0) 13649ce48e5aSMichal Kubecek return reglen; 13659ce48e5aSMichal Kubecek 13669ce48e5aSMichal Kubecek if (regs.len > reglen) 13679ce48e5aSMichal Kubecek regs.len = reglen; 13689ce48e5aSMichal Kubecek 13699ce48e5aSMichal Kubecek regbuf = vzalloc(reglen); 13709ce48e5aSMichal Kubecek if (!regbuf) 13719ce48e5aSMichal Kubecek return -ENOMEM; 13729ce48e5aSMichal Kubecek 13739ce48e5aSMichal Kubecek if (regs.len < reglen) 13749ce48e5aSMichal Kubecek reglen = regs.len; 13759ce48e5aSMichal Kubecek 13769ce48e5aSMichal Kubecek ops->get_regs(dev, ®s, regbuf); 13779ce48e5aSMichal Kubecek 13789ce48e5aSMichal Kubecek ret = -EFAULT; 13799ce48e5aSMichal Kubecek if (copy_to_user(useraddr, ®s, sizeof(regs))) 13809ce48e5aSMichal Kubecek goto out; 13819ce48e5aSMichal Kubecek useraddr += offsetof(struct ethtool_regs, data); 13829ce48e5aSMichal Kubecek if (copy_to_user(useraddr, regbuf, reglen)) 13839ce48e5aSMichal Kubecek goto out; 13849ce48e5aSMichal Kubecek ret = 0; 13859ce48e5aSMichal Kubecek 13869ce48e5aSMichal Kubecek out: 13879ce48e5aSMichal Kubecek vfree(regbuf); 13889ce48e5aSMichal Kubecek return ret; 13899ce48e5aSMichal Kubecek } 13909ce48e5aSMichal Kubecek 13919ce48e5aSMichal Kubecek static int ethtool_reset(struct net_device *dev, char __user *useraddr) 13929ce48e5aSMichal Kubecek { 13939ce48e5aSMichal Kubecek struct ethtool_value reset; 13949ce48e5aSMichal Kubecek int ret; 13959ce48e5aSMichal Kubecek 13969ce48e5aSMichal Kubecek if (!dev->ethtool_ops->reset) 13979ce48e5aSMichal Kubecek return -EOPNOTSUPP; 13989ce48e5aSMichal Kubecek 13999ce48e5aSMichal Kubecek if (copy_from_user(&reset, useraddr, sizeof(reset))) 14009ce48e5aSMichal Kubecek return -EFAULT; 14019ce48e5aSMichal Kubecek 14029ce48e5aSMichal Kubecek ret = dev->ethtool_ops->reset(dev, &reset.data); 14039ce48e5aSMichal Kubecek if (ret) 14049ce48e5aSMichal Kubecek return ret; 14059ce48e5aSMichal Kubecek 14069ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &reset, sizeof(reset))) 14079ce48e5aSMichal Kubecek return -EFAULT; 14089ce48e5aSMichal Kubecek return 0; 14099ce48e5aSMichal Kubecek } 14109ce48e5aSMichal Kubecek 14119ce48e5aSMichal Kubecek static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 14129ce48e5aSMichal Kubecek { 14139ce48e5aSMichal Kubecek struct ethtool_wolinfo wol; 14149ce48e5aSMichal Kubecek 14159ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_wol) 14169ce48e5aSMichal Kubecek return -EOPNOTSUPP; 14179ce48e5aSMichal Kubecek 14189ce48e5aSMichal Kubecek memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 14199ce48e5aSMichal Kubecek wol.cmd = ETHTOOL_GWOL; 14209ce48e5aSMichal Kubecek dev->ethtool_ops->get_wol(dev, &wol); 14219ce48e5aSMichal Kubecek 14229ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &wol, sizeof(wol))) 14239ce48e5aSMichal Kubecek return -EFAULT; 14249ce48e5aSMichal Kubecek return 0; 14259ce48e5aSMichal Kubecek } 14269ce48e5aSMichal Kubecek 14279ce48e5aSMichal Kubecek static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 14289ce48e5aSMichal Kubecek { 14299ce48e5aSMichal Kubecek struct ethtool_wolinfo wol; 14309ce48e5aSMichal Kubecek int ret; 14319ce48e5aSMichal Kubecek 14329ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_wol) 14339ce48e5aSMichal Kubecek return -EOPNOTSUPP; 14349ce48e5aSMichal Kubecek 14359ce48e5aSMichal Kubecek if (copy_from_user(&wol, useraddr, sizeof(wol))) 14369ce48e5aSMichal Kubecek return -EFAULT; 14379ce48e5aSMichal Kubecek 14389ce48e5aSMichal Kubecek ret = dev->ethtool_ops->set_wol(dev, &wol); 14399ce48e5aSMichal Kubecek if (ret) 14409ce48e5aSMichal Kubecek return ret; 14419ce48e5aSMichal Kubecek 14429ce48e5aSMichal Kubecek dev->wol_enabled = !!wol.wolopts; 144367bffa79SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 14449ce48e5aSMichal Kubecek 14459ce48e5aSMichal Kubecek return 0; 14469ce48e5aSMichal Kubecek } 14479ce48e5aSMichal Kubecek 14489ce48e5aSMichal Kubecek static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 14499ce48e5aSMichal Kubecek { 14509ce48e5aSMichal Kubecek struct ethtool_eee edata; 14519ce48e5aSMichal Kubecek int rc; 14529ce48e5aSMichal Kubecek 14539ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_eee) 14549ce48e5aSMichal Kubecek return -EOPNOTSUPP; 14559ce48e5aSMichal Kubecek 14569ce48e5aSMichal Kubecek memset(&edata, 0, sizeof(struct ethtool_eee)); 14579ce48e5aSMichal Kubecek edata.cmd = ETHTOOL_GEEE; 14589ce48e5aSMichal Kubecek rc = dev->ethtool_ops->get_eee(dev, &edata); 14599ce48e5aSMichal Kubecek 14609ce48e5aSMichal Kubecek if (rc) 14619ce48e5aSMichal Kubecek return rc; 14629ce48e5aSMichal Kubecek 14639ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &edata, sizeof(edata))) 14649ce48e5aSMichal Kubecek return -EFAULT; 14659ce48e5aSMichal Kubecek 14669ce48e5aSMichal Kubecek return 0; 14679ce48e5aSMichal Kubecek } 14689ce48e5aSMichal Kubecek 14699ce48e5aSMichal Kubecek static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 14709ce48e5aSMichal Kubecek { 14719ce48e5aSMichal Kubecek struct ethtool_eee edata; 14726c5bc8feSMichal Kubecek int ret; 14739ce48e5aSMichal Kubecek 14749ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_eee) 14759ce48e5aSMichal Kubecek return -EOPNOTSUPP; 14769ce48e5aSMichal Kubecek 14779ce48e5aSMichal Kubecek if (copy_from_user(&edata, useraddr, sizeof(edata))) 14789ce48e5aSMichal Kubecek return -EFAULT; 14799ce48e5aSMichal Kubecek 14806c5bc8feSMichal Kubecek ret = dev->ethtool_ops->set_eee(dev, &edata); 14816c5bc8feSMichal Kubecek if (!ret) 14826c5bc8feSMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); 14836c5bc8feSMichal Kubecek return ret; 14849ce48e5aSMichal Kubecek } 14859ce48e5aSMichal Kubecek 14869ce48e5aSMichal Kubecek static int ethtool_nway_reset(struct net_device *dev) 14879ce48e5aSMichal Kubecek { 14889ce48e5aSMichal Kubecek if (!dev->ethtool_ops->nway_reset) 14899ce48e5aSMichal Kubecek return -EOPNOTSUPP; 14909ce48e5aSMichal Kubecek 14919ce48e5aSMichal Kubecek return dev->ethtool_ops->nway_reset(dev); 14929ce48e5aSMichal Kubecek } 14939ce48e5aSMichal Kubecek 14949ce48e5aSMichal Kubecek static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 14959ce48e5aSMichal Kubecek { 14969ce48e5aSMichal Kubecek struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 14973d2b847fSMichal Kubecek int link = __ethtool_get_link(dev); 14989ce48e5aSMichal Kubecek 14993d2b847fSMichal Kubecek if (link < 0) 15003d2b847fSMichal Kubecek return link; 15019ce48e5aSMichal Kubecek 15023d2b847fSMichal Kubecek edata.data = link; 15039ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &edata, sizeof(edata))) 15049ce48e5aSMichal Kubecek return -EFAULT; 15059ce48e5aSMichal Kubecek return 0; 15069ce48e5aSMichal Kubecek } 15079ce48e5aSMichal Kubecek 15089ce48e5aSMichal Kubecek static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 15099ce48e5aSMichal Kubecek int (*getter)(struct net_device *, 15109ce48e5aSMichal Kubecek struct ethtool_eeprom *, u8 *), 15119ce48e5aSMichal Kubecek u32 total_len) 15129ce48e5aSMichal Kubecek { 15139ce48e5aSMichal Kubecek struct ethtool_eeprom eeprom; 15149ce48e5aSMichal Kubecek void __user *userbuf = useraddr + sizeof(eeprom); 15159ce48e5aSMichal Kubecek u32 bytes_remaining; 15169ce48e5aSMichal Kubecek u8 *data; 15179ce48e5aSMichal Kubecek int ret = 0; 15189ce48e5aSMichal Kubecek 15199ce48e5aSMichal Kubecek if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 15209ce48e5aSMichal Kubecek return -EFAULT; 15219ce48e5aSMichal Kubecek 15229ce48e5aSMichal Kubecek /* Check for wrap and zero */ 15239ce48e5aSMichal Kubecek if (eeprom.offset + eeprom.len <= eeprom.offset) 15249ce48e5aSMichal Kubecek return -EINVAL; 15259ce48e5aSMichal Kubecek 15269ce48e5aSMichal Kubecek /* Check for exceeding total eeprom len */ 15279ce48e5aSMichal Kubecek if (eeprom.offset + eeprom.len > total_len) 15289ce48e5aSMichal Kubecek return -EINVAL; 15299ce48e5aSMichal Kubecek 153080ec82e3SAustin Kim data = kzalloc(PAGE_SIZE, GFP_USER); 15319ce48e5aSMichal Kubecek if (!data) 15329ce48e5aSMichal Kubecek return -ENOMEM; 15339ce48e5aSMichal Kubecek 15349ce48e5aSMichal Kubecek bytes_remaining = eeprom.len; 15359ce48e5aSMichal Kubecek while (bytes_remaining > 0) { 15369ce48e5aSMichal Kubecek eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 15379ce48e5aSMichal Kubecek 15389ce48e5aSMichal Kubecek ret = getter(dev, &eeprom, data); 15399ce48e5aSMichal Kubecek if (ret) 15409ce48e5aSMichal Kubecek break; 1541b9bbc4c1SHeiner Kallweit if (!eeprom.len) { 1542b9bbc4c1SHeiner Kallweit ret = -EIO; 1543b9bbc4c1SHeiner Kallweit break; 1544b9bbc4c1SHeiner Kallweit } 15459ce48e5aSMichal Kubecek if (copy_to_user(userbuf, data, eeprom.len)) { 15469ce48e5aSMichal Kubecek ret = -EFAULT; 15479ce48e5aSMichal Kubecek break; 15489ce48e5aSMichal Kubecek } 15499ce48e5aSMichal Kubecek userbuf += eeprom.len; 15509ce48e5aSMichal Kubecek eeprom.offset += eeprom.len; 15519ce48e5aSMichal Kubecek bytes_remaining -= eeprom.len; 15529ce48e5aSMichal Kubecek } 15539ce48e5aSMichal Kubecek 15549ce48e5aSMichal Kubecek eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 15559ce48e5aSMichal Kubecek eeprom.offset -= eeprom.len; 15569ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 15579ce48e5aSMichal Kubecek ret = -EFAULT; 15589ce48e5aSMichal Kubecek 15599ce48e5aSMichal Kubecek kfree(data); 15609ce48e5aSMichal Kubecek return ret; 15619ce48e5aSMichal Kubecek } 15629ce48e5aSMichal Kubecek 15639ce48e5aSMichal Kubecek static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 15649ce48e5aSMichal Kubecek { 15659ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 15669ce48e5aSMichal Kubecek 15679ce48e5aSMichal Kubecek if (!ops->get_eeprom || !ops->get_eeprom_len || 15689ce48e5aSMichal Kubecek !ops->get_eeprom_len(dev)) 15699ce48e5aSMichal Kubecek return -EOPNOTSUPP; 15709ce48e5aSMichal Kubecek 15719ce48e5aSMichal Kubecek return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 15729ce48e5aSMichal Kubecek ops->get_eeprom_len(dev)); 15739ce48e5aSMichal Kubecek } 15749ce48e5aSMichal Kubecek 15759ce48e5aSMichal Kubecek static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 15769ce48e5aSMichal Kubecek { 15779ce48e5aSMichal Kubecek struct ethtool_eeprom eeprom; 15789ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 15799ce48e5aSMichal Kubecek void __user *userbuf = useraddr + sizeof(eeprom); 15809ce48e5aSMichal Kubecek u32 bytes_remaining; 15819ce48e5aSMichal Kubecek u8 *data; 15829ce48e5aSMichal Kubecek int ret = 0; 15839ce48e5aSMichal Kubecek 15849ce48e5aSMichal Kubecek if (!ops->set_eeprom || !ops->get_eeprom_len || 15859ce48e5aSMichal Kubecek !ops->get_eeprom_len(dev)) 15869ce48e5aSMichal Kubecek return -EOPNOTSUPP; 15879ce48e5aSMichal Kubecek 15889ce48e5aSMichal Kubecek if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 15899ce48e5aSMichal Kubecek return -EFAULT; 15909ce48e5aSMichal Kubecek 15919ce48e5aSMichal Kubecek /* Check for wrap and zero */ 15929ce48e5aSMichal Kubecek if (eeprom.offset + eeprom.len <= eeprom.offset) 15939ce48e5aSMichal Kubecek return -EINVAL; 15949ce48e5aSMichal Kubecek 15959ce48e5aSMichal Kubecek /* Check for exceeding total eeprom len */ 15969ce48e5aSMichal Kubecek if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 15979ce48e5aSMichal Kubecek return -EINVAL; 15989ce48e5aSMichal Kubecek 159980ec82e3SAustin Kim data = kzalloc(PAGE_SIZE, GFP_USER); 16009ce48e5aSMichal Kubecek if (!data) 16019ce48e5aSMichal Kubecek return -ENOMEM; 16029ce48e5aSMichal Kubecek 16039ce48e5aSMichal Kubecek bytes_remaining = eeprom.len; 16049ce48e5aSMichal Kubecek while (bytes_remaining > 0) { 16059ce48e5aSMichal Kubecek eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 16069ce48e5aSMichal Kubecek 16079ce48e5aSMichal Kubecek if (copy_from_user(data, userbuf, eeprom.len)) { 16089ce48e5aSMichal Kubecek ret = -EFAULT; 16099ce48e5aSMichal Kubecek break; 16109ce48e5aSMichal Kubecek } 16119ce48e5aSMichal Kubecek ret = ops->set_eeprom(dev, &eeprom, data); 16129ce48e5aSMichal Kubecek if (ret) 16139ce48e5aSMichal Kubecek break; 16149ce48e5aSMichal Kubecek userbuf += eeprom.len; 16159ce48e5aSMichal Kubecek eeprom.offset += eeprom.len; 16169ce48e5aSMichal Kubecek bytes_remaining -= eeprom.len; 16179ce48e5aSMichal Kubecek } 16189ce48e5aSMichal Kubecek 16199ce48e5aSMichal Kubecek kfree(data); 16209ce48e5aSMichal Kubecek return ret; 16219ce48e5aSMichal Kubecek } 16229ce48e5aSMichal Kubecek 16239ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 16249ce48e5aSMichal Kubecek void __user *useraddr) 16259ce48e5aSMichal Kubecek { 16269ce48e5aSMichal Kubecek struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 1627f3ccfda1SYufeng Mo struct kernel_ethtool_coalesce kernel_coalesce = {}; 162831610711SHeiner Kallweit int ret; 16299ce48e5aSMichal Kubecek 16309ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_coalesce) 16319ce48e5aSMichal Kubecek return -EOPNOTSUPP; 16329ce48e5aSMichal Kubecek 1633f3ccfda1SYufeng Mo ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1634f3ccfda1SYufeng Mo NULL); 163531610711SHeiner Kallweit if (ret) 163631610711SHeiner Kallweit return ret; 16379ce48e5aSMichal Kubecek 16389ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 16399ce48e5aSMichal Kubecek return -EFAULT; 16409ce48e5aSMichal Kubecek return 0; 16419ce48e5aSMichal Kubecek } 16429ce48e5aSMichal Kubecek 164395cddcb5SJakub Kicinski static bool 164495cddcb5SJakub Kicinski ethtool_set_coalesce_supported(struct net_device *dev, 164595cddcb5SJakub Kicinski struct ethtool_coalesce *coalesce) 164695cddcb5SJakub Kicinski { 164795cddcb5SJakub Kicinski u32 supported_params = dev->ethtool_ops->supported_coalesce_params; 164895cddcb5SJakub Kicinski u32 nonzero_params = 0; 164995cddcb5SJakub Kicinski 165095cddcb5SJakub Kicinski if (coalesce->rx_coalesce_usecs) 165195cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_RX_USECS; 165295cddcb5SJakub Kicinski if (coalesce->rx_max_coalesced_frames) 165395cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; 165495cddcb5SJakub Kicinski if (coalesce->rx_coalesce_usecs_irq) 165595cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; 165695cddcb5SJakub Kicinski if (coalesce->rx_max_coalesced_frames_irq) 165795cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; 165895cddcb5SJakub Kicinski if (coalesce->tx_coalesce_usecs) 165995cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_TX_USECS; 166095cddcb5SJakub Kicinski if (coalesce->tx_max_coalesced_frames) 166195cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; 166295cddcb5SJakub Kicinski if (coalesce->tx_coalesce_usecs_irq) 166395cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; 166495cddcb5SJakub Kicinski if (coalesce->tx_max_coalesced_frames_irq) 166595cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; 166695cddcb5SJakub Kicinski if (coalesce->stats_block_coalesce_usecs) 166795cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; 166895cddcb5SJakub Kicinski if (coalesce->use_adaptive_rx_coalesce) 166995cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; 167095cddcb5SJakub Kicinski if (coalesce->use_adaptive_tx_coalesce) 167195cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; 167295cddcb5SJakub Kicinski if (coalesce->pkt_rate_low) 167395cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; 167495cddcb5SJakub Kicinski if (coalesce->rx_coalesce_usecs_low) 167595cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; 167695cddcb5SJakub Kicinski if (coalesce->rx_max_coalesced_frames_low) 167795cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; 167895cddcb5SJakub Kicinski if (coalesce->tx_coalesce_usecs_low) 167995cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; 168095cddcb5SJakub Kicinski if (coalesce->tx_max_coalesced_frames_low) 168195cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; 168295cddcb5SJakub Kicinski if (coalesce->pkt_rate_high) 168395cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; 168495cddcb5SJakub Kicinski if (coalesce->rx_coalesce_usecs_high) 168595cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; 168695cddcb5SJakub Kicinski if (coalesce->rx_max_coalesced_frames_high) 168795cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; 168895cddcb5SJakub Kicinski if (coalesce->tx_coalesce_usecs_high) 168995cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; 169095cddcb5SJakub Kicinski if (coalesce->tx_max_coalesced_frames_high) 169195cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; 169295cddcb5SJakub Kicinski if (coalesce->rate_sample_interval) 169395cddcb5SJakub Kicinski nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; 169495cddcb5SJakub Kicinski 169595cddcb5SJakub Kicinski return (supported_params & nonzero_params) == nonzero_params; 169695cddcb5SJakub Kicinski } 169795cddcb5SJakub Kicinski 16989ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 16999ce48e5aSMichal Kubecek void __user *useraddr) 17009ce48e5aSMichal Kubecek { 1701f3ccfda1SYufeng Mo struct kernel_ethtool_coalesce kernel_coalesce = {}; 17029ce48e5aSMichal Kubecek struct ethtool_coalesce coalesce; 17030cf3eac8SMichal Kubecek int ret; 17049ce48e5aSMichal Kubecek 1705f3ccfda1SYufeng Mo if (!dev->ethtool_ops->set_coalesce && !dev->ethtool_ops->get_coalesce) 17069ce48e5aSMichal Kubecek return -EOPNOTSUPP; 17079ce48e5aSMichal Kubecek 1708f3ccfda1SYufeng Mo ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, 1709f3ccfda1SYufeng Mo NULL); 1710f3ccfda1SYufeng Mo if (ret) 1711f3ccfda1SYufeng Mo return ret; 1712f3ccfda1SYufeng Mo 17139ce48e5aSMichal Kubecek if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 17149ce48e5aSMichal Kubecek return -EFAULT; 17159ce48e5aSMichal Kubecek 171695cddcb5SJakub Kicinski if (!ethtool_set_coalesce_supported(dev, &coalesce)) 171795cddcb5SJakub Kicinski return -EOPNOTSUPP; 171895cddcb5SJakub Kicinski 1719f3ccfda1SYufeng Mo ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, 1720f3ccfda1SYufeng Mo NULL); 17210cf3eac8SMichal Kubecek if (!ret) 17220cf3eac8SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); 17230cf3eac8SMichal Kubecek return ret; 17249ce48e5aSMichal Kubecek } 17259ce48e5aSMichal Kubecek 17269ce48e5aSMichal Kubecek static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 17279ce48e5aSMichal Kubecek { 17289ce48e5aSMichal Kubecek struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 17299ce48e5aSMichal Kubecek 17309ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_ringparam) 17319ce48e5aSMichal Kubecek return -EOPNOTSUPP; 17329ce48e5aSMichal Kubecek 17339ce48e5aSMichal Kubecek dev->ethtool_ops->get_ringparam(dev, &ringparam); 17349ce48e5aSMichal Kubecek 17359ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 17369ce48e5aSMichal Kubecek return -EFAULT; 17379ce48e5aSMichal Kubecek return 0; 17389ce48e5aSMichal Kubecek } 17399ce48e5aSMichal Kubecek 17409ce48e5aSMichal Kubecek static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 17419ce48e5aSMichal Kubecek { 17429ce48e5aSMichal Kubecek struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; 1743bc9d1c99SMichal Kubecek int ret; 17449ce48e5aSMichal Kubecek 17459ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 17469ce48e5aSMichal Kubecek return -EOPNOTSUPP; 17479ce48e5aSMichal Kubecek 17489ce48e5aSMichal Kubecek if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 17499ce48e5aSMichal Kubecek return -EFAULT; 17509ce48e5aSMichal Kubecek 17519ce48e5aSMichal Kubecek dev->ethtool_ops->get_ringparam(dev, &max); 17529ce48e5aSMichal Kubecek 17539ce48e5aSMichal Kubecek /* ensure new ring parameters are within the maximums */ 17549ce48e5aSMichal Kubecek if (ringparam.rx_pending > max.rx_max_pending || 17559ce48e5aSMichal Kubecek ringparam.rx_mini_pending > max.rx_mini_max_pending || 17569ce48e5aSMichal Kubecek ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 17579ce48e5aSMichal Kubecek ringparam.tx_pending > max.tx_max_pending) 17589ce48e5aSMichal Kubecek return -EINVAL; 17599ce48e5aSMichal Kubecek 1760bc9d1c99SMichal Kubecek ret = dev->ethtool_ops->set_ringparam(dev, &ringparam); 1761bc9d1c99SMichal Kubecek if (!ret) 1762bc9d1c99SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); 1763bc9d1c99SMichal Kubecek return ret; 17649ce48e5aSMichal Kubecek } 17659ce48e5aSMichal Kubecek 17669ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 17679ce48e5aSMichal Kubecek void __user *useraddr) 17689ce48e5aSMichal Kubecek { 17699ce48e5aSMichal Kubecek struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 17709ce48e5aSMichal Kubecek 17719ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_channels) 17729ce48e5aSMichal Kubecek return -EOPNOTSUPP; 17739ce48e5aSMichal Kubecek 17749ce48e5aSMichal Kubecek dev->ethtool_ops->get_channels(dev, &channels); 17759ce48e5aSMichal Kubecek 17769ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &channels, sizeof(channels))) 17779ce48e5aSMichal Kubecek return -EFAULT; 17789ce48e5aSMichal Kubecek return 0; 17799ce48e5aSMichal Kubecek } 17809ce48e5aSMichal Kubecek 17819ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 17829ce48e5aSMichal Kubecek void __user *useraddr) 17839ce48e5aSMichal Kubecek { 17849ce48e5aSMichal Kubecek struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 17859ce48e5aSMichal Kubecek u16 from_channel, to_channel; 17869ce48e5aSMichal Kubecek u32 max_rx_in_use = 0; 17879ce48e5aSMichal Kubecek unsigned int i; 1788546379b9SMichal Kubecek int ret; 17899ce48e5aSMichal Kubecek 17909ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 17919ce48e5aSMichal Kubecek return -EOPNOTSUPP; 17929ce48e5aSMichal Kubecek 17939ce48e5aSMichal Kubecek if (copy_from_user(&channels, useraddr, sizeof(channels))) 17949ce48e5aSMichal Kubecek return -EFAULT; 17959ce48e5aSMichal Kubecek 17969ce48e5aSMichal Kubecek dev->ethtool_ops->get_channels(dev, &curr); 17979ce48e5aSMichal Kubecek 179875c36dbbSJakub Kicinski if (channels.rx_count == curr.rx_count && 179975c36dbbSJakub Kicinski channels.tx_count == curr.tx_count && 180075c36dbbSJakub Kicinski channels.combined_count == curr.combined_count && 180175c36dbbSJakub Kicinski channels.other_count == curr.other_count) 180275c36dbbSJakub Kicinski return 0; 180375c36dbbSJakub Kicinski 18049ce48e5aSMichal Kubecek /* ensure new counts are within the maximums */ 18059ce48e5aSMichal Kubecek if (channels.rx_count > curr.max_rx || 18069ce48e5aSMichal Kubecek channels.tx_count > curr.max_tx || 18079ce48e5aSMichal Kubecek channels.combined_count > curr.max_combined || 18089ce48e5aSMichal Kubecek channels.other_count > curr.max_other) 18099ce48e5aSMichal Kubecek return -EINVAL; 18109ce48e5aSMichal Kubecek 18117be92514SJakub Kicinski /* ensure there is at least one RX and one TX channel */ 18127be92514SJakub Kicinski if (!channels.combined_count && 18137be92514SJakub Kicinski (!channels.rx_count || !channels.tx_count)) 18147be92514SJakub Kicinski return -EINVAL; 18157be92514SJakub Kicinski 18169ce48e5aSMichal Kubecek /* ensure the new Rx count fits within the configured Rx flow 18179ce48e5aSMichal Kubecek * indirection table settings */ 18189ce48e5aSMichal Kubecek if (netif_is_rxfh_configured(dev) && 18199ce48e5aSMichal Kubecek !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) && 18209ce48e5aSMichal Kubecek (channels.combined_count + channels.rx_count) <= max_rx_in_use) 18219ce48e5aSMichal Kubecek return -EINVAL; 18229ce48e5aSMichal Kubecek 18239ce48e5aSMichal Kubecek /* Disabling channels, query zero-copy AF_XDP sockets */ 18249ce48e5aSMichal Kubecek from_channel = channels.combined_count + 18259ce48e5aSMichal Kubecek min(channels.rx_count, channels.tx_count); 18269ce48e5aSMichal Kubecek to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 18279ce48e5aSMichal Kubecek for (i = from_channel; i < to_channel; i++) 1828c4655761SMagnus Karlsson if (xsk_get_pool_from_qid(dev, i)) 18299ce48e5aSMichal Kubecek return -EINVAL; 18309ce48e5aSMichal Kubecek 1831546379b9SMichal Kubecek ret = dev->ethtool_ops->set_channels(dev, &channels); 1832546379b9SMichal Kubecek if (!ret) 1833546379b9SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); 1834546379b9SMichal Kubecek return ret; 18359ce48e5aSMichal Kubecek } 18369ce48e5aSMichal Kubecek 18379ce48e5aSMichal Kubecek static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 18389ce48e5aSMichal Kubecek { 18399ce48e5aSMichal Kubecek struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 18409ce48e5aSMichal Kubecek 18419ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_pauseparam) 18429ce48e5aSMichal Kubecek return -EOPNOTSUPP; 18439ce48e5aSMichal Kubecek 18449ce48e5aSMichal Kubecek dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 18459ce48e5aSMichal Kubecek 18469ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 18479ce48e5aSMichal Kubecek return -EFAULT; 18489ce48e5aSMichal Kubecek return 0; 18499ce48e5aSMichal Kubecek } 18509ce48e5aSMichal Kubecek 18519ce48e5aSMichal Kubecek static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 18529ce48e5aSMichal Kubecek { 18539ce48e5aSMichal Kubecek struct ethtool_pauseparam pauseparam; 1854bf37faa3SMichal Kubecek int ret; 18559ce48e5aSMichal Kubecek 18569ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_pauseparam) 18579ce48e5aSMichal Kubecek return -EOPNOTSUPP; 18589ce48e5aSMichal Kubecek 18599ce48e5aSMichal Kubecek if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 18609ce48e5aSMichal Kubecek return -EFAULT; 18619ce48e5aSMichal Kubecek 1862bf37faa3SMichal Kubecek ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 1863bf37faa3SMichal Kubecek if (!ret) 1864bf37faa3SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); 1865bf37faa3SMichal Kubecek return ret; 18669ce48e5aSMichal Kubecek } 18679ce48e5aSMichal Kubecek 18689ce48e5aSMichal Kubecek static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 18699ce48e5aSMichal Kubecek { 18709ce48e5aSMichal Kubecek struct ethtool_test test; 18719ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 18729ce48e5aSMichal Kubecek u64 *data; 18739ce48e5aSMichal Kubecek int ret, test_len; 18749ce48e5aSMichal Kubecek 18759ce48e5aSMichal Kubecek if (!ops->self_test || !ops->get_sset_count) 18769ce48e5aSMichal Kubecek return -EOPNOTSUPP; 18779ce48e5aSMichal Kubecek 18789ce48e5aSMichal Kubecek test_len = ops->get_sset_count(dev, ETH_SS_TEST); 18799ce48e5aSMichal Kubecek if (test_len < 0) 18809ce48e5aSMichal Kubecek return test_len; 18819ce48e5aSMichal Kubecek WARN_ON(test_len == 0); 18829ce48e5aSMichal Kubecek 18839ce48e5aSMichal Kubecek if (copy_from_user(&test, useraddr, sizeof(test))) 18849ce48e5aSMichal Kubecek return -EFAULT; 18859ce48e5aSMichal Kubecek 18869ce48e5aSMichal Kubecek test.len = test_len; 188780ec82e3SAustin Kim data = kcalloc(test_len, sizeof(u64), GFP_USER); 18889ce48e5aSMichal Kubecek if (!data) 18899ce48e5aSMichal Kubecek return -ENOMEM; 18909ce48e5aSMichal Kubecek 189177e9b2abSAndrew Lunn netif_testing_on(dev); 18929ce48e5aSMichal Kubecek ops->self_test(dev, &test, data); 189377e9b2abSAndrew Lunn netif_testing_off(dev); 18949ce48e5aSMichal Kubecek 18959ce48e5aSMichal Kubecek ret = -EFAULT; 18969ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &test, sizeof(test))) 18979ce48e5aSMichal Kubecek goto out; 18989ce48e5aSMichal Kubecek useraddr += sizeof(test); 1899*ed717613SGustavo A. R. Silva if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) 19009ce48e5aSMichal Kubecek goto out; 19019ce48e5aSMichal Kubecek ret = 0; 19029ce48e5aSMichal Kubecek 19039ce48e5aSMichal Kubecek out: 19049ce48e5aSMichal Kubecek kfree(data); 19059ce48e5aSMichal Kubecek return ret; 19069ce48e5aSMichal Kubecek } 19079ce48e5aSMichal Kubecek 19089ce48e5aSMichal Kubecek static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 19099ce48e5aSMichal Kubecek { 19109ce48e5aSMichal Kubecek struct ethtool_gstrings gstrings; 19119ce48e5aSMichal Kubecek u8 *data; 19129ce48e5aSMichal Kubecek int ret; 19139ce48e5aSMichal Kubecek 19149ce48e5aSMichal Kubecek if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 19159ce48e5aSMichal Kubecek return -EFAULT; 19169ce48e5aSMichal Kubecek 19179ce48e5aSMichal Kubecek ret = __ethtool_get_sset_count(dev, gstrings.string_set); 19189ce48e5aSMichal Kubecek if (ret < 0) 19199ce48e5aSMichal Kubecek return ret; 19209ce48e5aSMichal Kubecek if (ret > S32_MAX / ETH_GSTRING_LEN) 19219ce48e5aSMichal Kubecek return -ENOMEM; 19229ce48e5aSMichal Kubecek WARN_ON_ONCE(!ret); 19239ce48e5aSMichal Kubecek 19249ce48e5aSMichal Kubecek gstrings.len = ret; 19259ce48e5aSMichal Kubecek 19269ce48e5aSMichal Kubecek if (gstrings.len) { 19279ce48e5aSMichal Kubecek data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 19289ce48e5aSMichal Kubecek if (!data) 19299ce48e5aSMichal Kubecek return -ENOMEM; 19309ce48e5aSMichal Kubecek 19319ce48e5aSMichal Kubecek __ethtool_get_strings(dev, gstrings.string_set, data); 19329ce48e5aSMichal Kubecek } else { 19339ce48e5aSMichal Kubecek data = NULL; 19349ce48e5aSMichal Kubecek } 19359ce48e5aSMichal Kubecek 19369ce48e5aSMichal Kubecek ret = -EFAULT; 19379ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 19389ce48e5aSMichal Kubecek goto out; 19399ce48e5aSMichal Kubecek useraddr += sizeof(gstrings); 19409ce48e5aSMichal Kubecek if (gstrings.len && 1941*ed717613SGustavo A. R. Silva copy_to_user(useraddr, data, 1942*ed717613SGustavo A. R. Silva array_size(gstrings.len, ETH_GSTRING_LEN))) 19439ce48e5aSMichal Kubecek goto out; 19449ce48e5aSMichal Kubecek ret = 0; 19459ce48e5aSMichal Kubecek 19469ce48e5aSMichal Kubecek out: 19479ce48e5aSMichal Kubecek vfree(data); 19489ce48e5aSMichal Kubecek return ret; 19499ce48e5aSMichal Kubecek } 19509ce48e5aSMichal Kubecek 19517888fe53SAlexander Duyck __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) 19527888fe53SAlexander Duyck { 19537888fe53SAlexander Duyck va_list args; 19547888fe53SAlexander Duyck 19557888fe53SAlexander Duyck va_start(args, fmt); 19567888fe53SAlexander Duyck vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); 19577888fe53SAlexander Duyck va_end(args); 19587888fe53SAlexander Duyck 19597888fe53SAlexander Duyck *data += ETH_GSTRING_LEN; 19607888fe53SAlexander Duyck } 19617888fe53SAlexander Duyck EXPORT_SYMBOL(ethtool_sprintf); 19627888fe53SAlexander Duyck 19639ce48e5aSMichal Kubecek static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 19649ce48e5aSMichal Kubecek { 19659ce48e5aSMichal Kubecek struct ethtool_value id; 19669ce48e5aSMichal Kubecek static bool busy; 19679ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 19689ce48e5aSMichal Kubecek int rc; 19699ce48e5aSMichal Kubecek 19709ce48e5aSMichal Kubecek if (!ops->set_phys_id) 19719ce48e5aSMichal Kubecek return -EOPNOTSUPP; 19729ce48e5aSMichal Kubecek 19739ce48e5aSMichal Kubecek if (busy) 19749ce48e5aSMichal Kubecek return -EBUSY; 19759ce48e5aSMichal Kubecek 19769ce48e5aSMichal Kubecek if (copy_from_user(&id, useraddr, sizeof(id))) 19779ce48e5aSMichal Kubecek return -EFAULT; 19789ce48e5aSMichal Kubecek 19799ce48e5aSMichal Kubecek rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 19809ce48e5aSMichal Kubecek if (rc < 0) 19819ce48e5aSMichal Kubecek return rc; 19829ce48e5aSMichal Kubecek 19839ce48e5aSMichal Kubecek /* Drop the RTNL lock while waiting, but prevent reentry or 19849ce48e5aSMichal Kubecek * removal of the device. 19859ce48e5aSMichal Kubecek */ 19869ce48e5aSMichal Kubecek busy = true; 19879ce48e5aSMichal Kubecek dev_hold(dev); 19889ce48e5aSMichal Kubecek rtnl_unlock(); 19899ce48e5aSMichal Kubecek 19909ce48e5aSMichal Kubecek if (rc == 0) { 19919ce48e5aSMichal Kubecek /* Driver will handle this itself */ 19929ce48e5aSMichal Kubecek schedule_timeout_interruptible( 19939ce48e5aSMichal Kubecek id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 19949ce48e5aSMichal Kubecek } else { 19959ce48e5aSMichal Kubecek /* Driver expects to be called at twice the frequency in rc */ 19962adc6edcSEdward Cree int n = rc * 2, interval = HZ / n; 19972adc6edcSEdward Cree u64 count = n * id.data, i = 0; 19989ce48e5aSMichal Kubecek 19999ce48e5aSMichal Kubecek do { 20009ce48e5aSMichal Kubecek rtnl_lock(); 20019ce48e5aSMichal Kubecek rc = ops->set_phys_id(dev, 20022adc6edcSEdward Cree (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 20039ce48e5aSMichal Kubecek rtnl_unlock(); 20049ce48e5aSMichal Kubecek if (rc) 20059ce48e5aSMichal Kubecek break; 20069ce48e5aSMichal Kubecek schedule_timeout_interruptible(interval); 20072adc6edcSEdward Cree } while (!signal_pending(current) && (!id.data || i < count)); 20089ce48e5aSMichal Kubecek } 20099ce48e5aSMichal Kubecek 20109ce48e5aSMichal Kubecek rtnl_lock(); 20119ce48e5aSMichal Kubecek dev_put(dev); 20129ce48e5aSMichal Kubecek busy = false; 20139ce48e5aSMichal Kubecek 20149ce48e5aSMichal Kubecek (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 20159ce48e5aSMichal Kubecek return rc; 20169ce48e5aSMichal Kubecek } 20179ce48e5aSMichal Kubecek 20189ce48e5aSMichal Kubecek static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 20199ce48e5aSMichal Kubecek { 20209ce48e5aSMichal Kubecek struct ethtool_stats stats; 20219ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 20229ce48e5aSMichal Kubecek u64 *data; 20239ce48e5aSMichal Kubecek int ret, n_stats; 20249ce48e5aSMichal Kubecek 20259ce48e5aSMichal Kubecek if (!ops->get_ethtool_stats || !ops->get_sset_count) 20269ce48e5aSMichal Kubecek return -EOPNOTSUPP; 20279ce48e5aSMichal Kubecek 20289ce48e5aSMichal Kubecek n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 20299ce48e5aSMichal Kubecek if (n_stats < 0) 20309ce48e5aSMichal Kubecek return n_stats; 20319ce48e5aSMichal Kubecek if (n_stats > S32_MAX / sizeof(u64)) 20329ce48e5aSMichal Kubecek return -ENOMEM; 20339ce48e5aSMichal Kubecek WARN_ON_ONCE(!n_stats); 20349ce48e5aSMichal Kubecek if (copy_from_user(&stats, useraddr, sizeof(stats))) 20359ce48e5aSMichal Kubecek return -EFAULT; 20369ce48e5aSMichal Kubecek 20379ce48e5aSMichal Kubecek stats.n_stats = n_stats; 20389ce48e5aSMichal Kubecek 20399ce48e5aSMichal Kubecek if (n_stats) { 20409ce48e5aSMichal Kubecek data = vzalloc(array_size(n_stats, sizeof(u64))); 20419ce48e5aSMichal Kubecek if (!data) 20429ce48e5aSMichal Kubecek return -ENOMEM; 20439ce48e5aSMichal Kubecek ops->get_ethtool_stats(dev, &stats, data); 20449ce48e5aSMichal Kubecek } else { 20459ce48e5aSMichal Kubecek data = NULL; 20469ce48e5aSMichal Kubecek } 20479ce48e5aSMichal Kubecek 20489ce48e5aSMichal Kubecek ret = -EFAULT; 20499ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &stats, sizeof(stats))) 20509ce48e5aSMichal Kubecek goto out; 20519ce48e5aSMichal Kubecek useraddr += sizeof(stats); 20523dd14996SGustavo A. R. Silva if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 20539ce48e5aSMichal Kubecek goto out; 20549ce48e5aSMichal Kubecek ret = 0; 20559ce48e5aSMichal Kubecek 20569ce48e5aSMichal Kubecek out: 20579ce48e5aSMichal Kubecek vfree(data); 20589ce48e5aSMichal Kubecek return ret; 20599ce48e5aSMichal Kubecek } 20609ce48e5aSMichal Kubecek 20619ce48e5aSMichal Kubecek static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 20629ce48e5aSMichal Kubecek { 206317809516SFlorian Fainelli const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; 20649ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 20659ce48e5aSMichal Kubecek struct phy_device *phydev = dev->phydev; 20669ce48e5aSMichal Kubecek struct ethtool_stats stats; 20679ce48e5aSMichal Kubecek u64 *data; 20689ce48e5aSMichal Kubecek int ret, n_stats; 20699ce48e5aSMichal Kubecek 20709ce48e5aSMichal Kubecek if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count)) 20719ce48e5aSMichal Kubecek return -EOPNOTSUPP; 20729ce48e5aSMichal Kubecek 207317809516SFlorian Fainelli if (dev->phydev && !ops->get_ethtool_phy_stats && 207417809516SFlorian Fainelli phy_ops && phy_ops->get_sset_count) 207517809516SFlorian Fainelli n_stats = phy_ops->get_sset_count(dev->phydev); 20769ce48e5aSMichal Kubecek else 20779ce48e5aSMichal Kubecek n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 20789ce48e5aSMichal Kubecek if (n_stats < 0) 20799ce48e5aSMichal Kubecek return n_stats; 20809ce48e5aSMichal Kubecek if (n_stats > S32_MAX / sizeof(u64)) 20819ce48e5aSMichal Kubecek return -ENOMEM; 20829ce48e5aSMichal Kubecek WARN_ON_ONCE(!n_stats); 20839ce48e5aSMichal Kubecek 20849ce48e5aSMichal Kubecek if (copy_from_user(&stats, useraddr, sizeof(stats))) 20859ce48e5aSMichal Kubecek return -EFAULT; 20869ce48e5aSMichal Kubecek 20879ce48e5aSMichal Kubecek stats.n_stats = n_stats; 20889ce48e5aSMichal Kubecek 20899ce48e5aSMichal Kubecek if (n_stats) { 20909ce48e5aSMichal Kubecek data = vzalloc(array_size(n_stats, sizeof(u64))); 20919ce48e5aSMichal Kubecek if (!data) 20929ce48e5aSMichal Kubecek return -ENOMEM; 20939ce48e5aSMichal Kubecek 209417809516SFlorian Fainelli if (dev->phydev && !ops->get_ethtool_phy_stats && 209517809516SFlorian Fainelli phy_ops && phy_ops->get_stats) { 209617809516SFlorian Fainelli ret = phy_ops->get_stats(dev->phydev, &stats, data); 20979ce48e5aSMichal Kubecek if (ret < 0) 20989ce48e5aSMichal Kubecek goto out; 20999ce48e5aSMichal Kubecek } else { 21009ce48e5aSMichal Kubecek ops->get_ethtool_phy_stats(dev, &stats, data); 21019ce48e5aSMichal Kubecek } 21029ce48e5aSMichal Kubecek } else { 21039ce48e5aSMichal Kubecek data = NULL; 21049ce48e5aSMichal Kubecek } 21059ce48e5aSMichal Kubecek 21069ce48e5aSMichal Kubecek ret = -EFAULT; 21079ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &stats, sizeof(stats))) 21089ce48e5aSMichal Kubecek goto out; 21099ce48e5aSMichal Kubecek useraddr += sizeof(stats); 21103dd14996SGustavo A. R. Silva if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) 21119ce48e5aSMichal Kubecek goto out; 21129ce48e5aSMichal Kubecek ret = 0; 21139ce48e5aSMichal Kubecek 21149ce48e5aSMichal Kubecek out: 21159ce48e5aSMichal Kubecek vfree(data); 21169ce48e5aSMichal Kubecek return ret; 21179ce48e5aSMichal Kubecek } 21189ce48e5aSMichal Kubecek 21199ce48e5aSMichal Kubecek static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 21209ce48e5aSMichal Kubecek { 21219ce48e5aSMichal Kubecek struct ethtool_perm_addr epaddr; 21229ce48e5aSMichal Kubecek 21239ce48e5aSMichal Kubecek if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 21249ce48e5aSMichal Kubecek return -EFAULT; 21259ce48e5aSMichal Kubecek 21269ce48e5aSMichal Kubecek if (epaddr.size < dev->addr_len) 21279ce48e5aSMichal Kubecek return -ETOOSMALL; 21289ce48e5aSMichal Kubecek epaddr.size = dev->addr_len; 21299ce48e5aSMichal Kubecek 21309ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 21319ce48e5aSMichal Kubecek return -EFAULT; 21329ce48e5aSMichal Kubecek useraddr += sizeof(epaddr); 21339ce48e5aSMichal Kubecek if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 21349ce48e5aSMichal Kubecek return -EFAULT; 21359ce48e5aSMichal Kubecek return 0; 21369ce48e5aSMichal Kubecek } 21379ce48e5aSMichal Kubecek 21389ce48e5aSMichal Kubecek static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 21399ce48e5aSMichal Kubecek u32 cmd, u32 (*actor)(struct net_device *)) 21409ce48e5aSMichal Kubecek { 21419ce48e5aSMichal Kubecek struct ethtool_value edata = { .cmd = cmd }; 21429ce48e5aSMichal Kubecek 21439ce48e5aSMichal Kubecek if (!actor) 21449ce48e5aSMichal Kubecek return -EOPNOTSUPP; 21459ce48e5aSMichal Kubecek 21469ce48e5aSMichal Kubecek edata.data = actor(dev); 21479ce48e5aSMichal Kubecek 21489ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &edata, sizeof(edata))) 21499ce48e5aSMichal Kubecek return -EFAULT; 21509ce48e5aSMichal Kubecek return 0; 21519ce48e5aSMichal Kubecek } 21529ce48e5aSMichal Kubecek 21539ce48e5aSMichal Kubecek static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 21549ce48e5aSMichal Kubecek void (*actor)(struct net_device *, u32)) 21559ce48e5aSMichal Kubecek { 21569ce48e5aSMichal Kubecek struct ethtool_value edata; 21579ce48e5aSMichal Kubecek 21589ce48e5aSMichal Kubecek if (!actor) 21599ce48e5aSMichal Kubecek return -EOPNOTSUPP; 21609ce48e5aSMichal Kubecek 21619ce48e5aSMichal Kubecek if (copy_from_user(&edata, useraddr, sizeof(edata))) 21629ce48e5aSMichal Kubecek return -EFAULT; 21639ce48e5aSMichal Kubecek 21649ce48e5aSMichal Kubecek actor(dev, edata.data); 21659ce48e5aSMichal Kubecek return 0; 21669ce48e5aSMichal Kubecek } 21679ce48e5aSMichal Kubecek 21689ce48e5aSMichal Kubecek static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 21699ce48e5aSMichal Kubecek int (*actor)(struct net_device *, u32)) 21709ce48e5aSMichal Kubecek { 21719ce48e5aSMichal Kubecek struct ethtool_value edata; 21729ce48e5aSMichal Kubecek 21739ce48e5aSMichal Kubecek if (!actor) 21749ce48e5aSMichal Kubecek return -EOPNOTSUPP; 21759ce48e5aSMichal Kubecek 21769ce48e5aSMichal Kubecek if (copy_from_user(&edata, useraddr, sizeof(edata))) 21779ce48e5aSMichal Kubecek return -EFAULT; 21789ce48e5aSMichal Kubecek 21799ce48e5aSMichal Kubecek return actor(dev, edata.data); 21809ce48e5aSMichal Kubecek } 21819ce48e5aSMichal Kubecek 21829ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_flash_device(struct net_device *dev, 21839ce48e5aSMichal Kubecek char __user *useraddr) 21849ce48e5aSMichal Kubecek { 21859ce48e5aSMichal Kubecek struct ethtool_flash efl; 21869ce48e5aSMichal Kubecek 21879ce48e5aSMichal Kubecek if (copy_from_user(&efl, useraddr, sizeof(efl))) 21889ce48e5aSMichal Kubecek return -EFAULT; 21899ce48e5aSMichal Kubecek efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 21909ce48e5aSMichal Kubecek 21919ce48e5aSMichal Kubecek if (!dev->ethtool_ops->flash_device) 21929ce48e5aSMichal Kubecek return devlink_compat_flash_update(dev, efl.data); 21939ce48e5aSMichal Kubecek 21949ce48e5aSMichal Kubecek return dev->ethtool_ops->flash_device(dev, &efl); 21959ce48e5aSMichal Kubecek } 21969ce48e5aSMichal Kubecek 21979ce48e5aSMichal Kubecek static int ethtool_set_dump(struct net_device *dev, 21989ce48e5aSMichal Kubecek void __user *useraddr) 21999ce48e5aSMichal Kubecek { 22009ce48e5aSMichal Kubecek struct ethtool_dump dump; 22019ce48e5aSMichal Kubecek 22029ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_dump) 22039ce48e5aSMichal Kubecek return -EOPNOTSUPP; 22049ce48e5aSMichal Kubecek 22059ce48e5aSMichal Kubecek if (copy_from_user(&dump, useraddr, sizeof(dump))) 22069ce48e5aSMichal Kubecek return -EFAULT; 22079ce48e5aSMichal Kubecek 22089ce48e5aSMichal Kubecek return dev->ethtool_ops->set_dump(dev, &dump); 22099ce48e5aSMichal Kubecek } 22109ce48e5aSMichal Kubecek 22119ce48e5aSMichal Kubecek static int ethtool_get_dump_flag(struct net_device *dev, 22129ce48e5aSMichal Kubecek void __user *useraddr) 22139ce48e5aSMichal Kubecek { 22149ce48e5aSMichal Kubecek int ret; 22159ce48e5aSMichal Kubecek struct ethtool_dump dump; 22169ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 22179ce48e5aSMichal Kubecek 22189ce48e5aSMichal Kubecek if (!ops->get_dump_flag) 22199ce48e5aSMichal Kubecek return -EOPNOTSUPP; 22209ce48e5aSMichal Kubecek 22219ce48e5aSMichal Kubecek if (copy_from_user(&dump, useraddr, sizeof(dump))) 22229ce48e5aSMichal Kubecek return -EFAULT; 22239ce48e5aSMichal Kubecek 22249ce48e5aSMichal Kubecek ret = ops->get_dump_flag(dev, &dump); 22259ce48e5aSMichal Kubecek if (ret) 22269ce48e5aSMichal Kubecek return ret; 22279ce48e5aSMichal Kubecek 22289ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &dump, sizeof(dump))) 22299ce48e5aSMichal Kubecek return -EFAULT; 22309ce48e5aSMichal Kubecek return 0; 22319ce48e5aSMichal Kubecek } 22329ce48e5aSMichal Kubecek 22339ce48e5aSMichal Kubecek static int ethtool_get_dump_data(struct net_device *dev, 22349ce48e5aSMichal Kubecek void __user *useraddr) 22359ce48e5aSMichal Kubecek { 22369ce48e5aSMichal Kubecek int ret; 22379ce48e5aSMichal Kubecek __u32 len; 22389ce48e5aSMichal Kubecek struct ethtool_dump dump, tmp; 22399ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 22409ce48e5aSMichal Kubecek void *data = NULL; 22419ce48e5aSMichal Kubecek 22429ce48e5aSMichal Kubecek if (!ops->get_dump_data || !ops->get_dump_flag) 22439ce48e5aSMichal Kubecek return -EOPNOTSUPP; 22449ce48e5aSMichal Kubecek 22459ce48e5aSMichal Kubecek if (copy_from_user(&dump, useraddr, sizeof(dump))) 22469ce48e5aSMichal Kubecek return -EFAULT; 22479ce48e5aSMichal Kubecek 22489ce48e5aSMichal Kubecek memset(&tmp, 0, sizeof(tmp)); 22499ce48e5aSMichal Kubecek tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 22509ce48e5aSMichal Kubecek ret = ops->get_dump_flag(dev, &tmp); 22519ce48e5aSMichal Kubecek if (ret) 22529ce48e5aSMichal Kubecek return ret; 22539ce48e5aSMichal Kubecek 22549ce48e5aSMichal Kubecek len = min(tmp.len, dump.len); 22559ce48e5aSMichal Kubecek if (!len) 22569ce48e5aSMichal Kubecek return -EFAULT; 22579ce48e5aSMichal Kubecek 22589ce48e5aSMichal Kubecek /* Don't ever let the driver think there's more space available 22599ce48e5aSMichal Kubecek * than it requested with .get_dump_flag(). 22609ce48e5aSMichal Kubecek */ 22619ce48e5aSMichal Kubecek dump.len = len; 22629ce48e5aSMichal Kubecek 22639ce48e5aSMichal Kubecek /* Always allocate enough space to hold the whole thing so that the 22649ce48e5aSMichal Kubecek * driver does not need to check the length and bother with partial 22659ce48e5aSMichal Kubecek * dumping. 22669ce48e5aSMichal Kubecek */ 22679ce48e5aSMichal Kubecek data = vzalloc(tmp.len); 22689ce48e5aSMichal Kubecek if (!data) 22699ce48e5aSMichal Kubecek return -ENOMEM; 22709ce48e5aSMichal Kubecek ret = ops->get_dump_data(dev, &dump, data); 22719ce48e5aSMichal Kubecek if (ret) 22729ce48e5aSMichal Kubecek goto out; 22739ce48e5aSMichal Kubecek 22749ce48e5aSMichal Kubecek /* There are two sane possibilities: 22759ce48e5aSMichal Kubecek * 1. The driver's .get_dump_data() does not touch dump.len. 22769ce48e5aSMichal Kubecek * 2. Or it may set dump.len to how much it really writes, which 22779ce48e5aSMichal Kubecek * should be tmp.len (or len if it can do a partial dump). 22789ce48e5aSMichal Kubecek * In any case respond to userspace with the actual length of data 22799ce48e5aSMichal Kubecek * it's receiving. 22809ce48e5aSMichal Kubecek */ 22819ce48e5aSMichal Kubecek WARN_ON(dump.len != len && dump.len != tmp.len); 22829ce48e5aSMichal Kubecek dump.len = len; 22839ce48e5aSMichal Kubecek 22849ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &dump, sizeof(dump))) { 22859ce48e5aSMichal Kubecek ret = -EFAULT; 22869ce48e5aSMichal Kubecek goto out; 22879ce48e5aSMichal Kubecek } 22889ce48e5aSMichal Kubecek useraddr += offsetof(struct ethtool_dump, data); 22899ce48e5aSMichal Kubecek if (copy_to_user(useraddr, data, len)) 22909ce48e5aSMichal Kubecek ret = -EFAULT; 22919ce48e5aSMichal Kubecek out: 22929ce48e5aSMichal Kubecek vfree(data); 22939ce48e5aSMichal Kubecek return ret; 22949ce48e5aSMichal Kubecek } 22959ce48e5aSMichal Kubecek 22969ce48e5aSMichal Kubecek static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 22979ce48e5aSMichal Kubecek { 22989ce48e5aSMichal Kubecek struct ethtool_ts_info info; 22995b071c59SMichal Kubecek int err; 23009ce48e5aSMichal Kubecek 23015b071c59SMichal Kubecek err = __ethtool_get_ts_info(dev, &info); 23029ce48e5aSMichal Kubecek if (err) 23039ce48e5aSMichal Kubecek return err; 23049ce48e5aSMichal Kubecek 23059ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &info, sizeof(info))) 23065b071c59SMichal Kubecek return -EFAULT; 23079ce48e5aSMichal Kubecek 23085b071c59SMichal Kubecek return 0; 23099ce48e5aSMichal Kubecek } 23109ce48e5aSMichal Kubecek 231195dfc7efSAndrew Lunn int ethtool_get_module_info_call(struct net_device *dev, 23129ce48e5aSMichal Kubecek struct ethtool_modinfo *modinfo) 23139ce48e5aSMichal Kubecek { 23149ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 23159ce48e5aSMichal Kubecek struct phy_device *phydev = dev->phydev; 23169ce48e5aSMichal Kubecek 23179ce48e5aSMichal Kubecek if (dev->sfp_bus) 23189ce48e5aSMichal Kubecek return sfp_get_module_info(dev->sfp_bus, modinfo); 23199ce48e5aSMichal Kubecek 23209ce48e5aSMichal Kubecek if (phydev && phydev->drv && phydev->drv->module_info) 23219ce48e5aSMichal Kubecek return phydev->drv->module_info(phydev, modinfo); 23229ce48e5aSMichal Kubecek 23239ce48e5aSMichal Kubecek if (ops->get_module_info) 23249ce48e5aSMichal Kubecek return ops->get_module_info(dev, modinfo); 23259ce48e5aSMichal Kubecek 23269ce48e5aSMichal Kubecek return -EOPNOTSUPP; 23279ce48e5aSMichal Kubecek } 23289ce48e5aSMichal Kubecek 23299ce48e5aSMichal Kubecek static int ethtool_get_module_info(struct net_device *dev, 23309ce48e5aSMichal Kubecek void __user *useraddr) 23319ce48e5aSMichal Kubecek { 23329ce48e5aSMichal Kubecek int ret; 23339ce48e5aSMichal Kubecek struct ethtool_modinfo modinfo; 23349ce48e5aSMichal Kubecek 23359ce48e5aSMichal Kubecek if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 23369ce48e5aSMichal Kubecek return -EFAULT; 23379ce48e5aSMichal Kubecek 233895dfc7efSAndrew Lunn ret = ethtool_get_module_info_call(dev, &modinfo); 23399ce48e5aSMichal Kubecek if (ret) 23409ce48e5aSMichal Kubecek return ret; 23419ce48e5aSMichal Kubecek 23429ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 23439ce48e5aSMichal Kubecek return -EFAULT; 23449ce48e5aSMichal Kubecek 23459ce48e5aSMichal Kubecek return 0; 23469ce48e5aSMichal Kubecek } 23479ce48e5aSMichal Kubecek 234895dfc7efSAndrew Lunn int ethtool_get_module_eeprom_call(struct net_device *dev, 23499ce48e5aSMichal Kubecek struct ethtool_eeprom *ee, u8 *data) 23509ce48e5aSMichal Kubecek { 23519ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 23529ce48e5aSMichal Kubecek struct phy_device *phydev = dev->phydev; 23539ce48e5aSMichal Kubecek 23549ce48e5aSMichal Kubecek if (dev->sfp_bus) 23559ce48e5aSMichal Kubecek return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 23569ce48e5aSMichal Kubecek 23579ce48e5aSMichal Kubecek if (phydev && phydev->drv && phydev->drv->module_eeprom) 23589ce48e5aSMichal Kubecek return phydev->drv->module_eeprom(phydev, ee, data); 23599ce48e5aSMichal Kubecek 23609ce48e5aSMichal Kubecek if (ops->get_module_eeprom) 23619ce48e5aSMichal Kubecek return ops->get_module_eeprom(dev, ee, data); 23629ce48e5aSMichal Kubecek 23639ce48e5aSMichal Kubecek return -EOPNOTSUPP; 23649ce48e5aSMichal Kubecek } 23659ce48e5aSMichal Kubecek 23669ce48e5aSMichal Kubecek static int ethtool_get_module_eeprom(struct net_device *dev, 23679ce48e5aSMichal Kubecek void __user *useraddr) 23689ce48e5aSMichal Kubecek { 23699ce48e5aSMichal Kubecek int ret; 23709ce48e5aSMichal Kubecek struct ethtool_modinfo modinfo; 23719ce48e5aSMichal Kubecek 237295dfc7efSAndrew Lunn ret = ethtool_get_module_info_call(dev, &modinfo); 23739ce48e5aSMichal Kubecek if (ret) 23749ce48e5aSMichal Kubecek return ret; 23759ce48e5aSMichal Kubecek 23769ce48e5aSMichal Kubecek return ethtool_get_any_eeprom(dev, useraddr, 237795dfc7efSAndrew Lunn ethtool_get_module_eeprom_call, 23789ce48e5aSMichal Kubecek modinfo.eeprom_len); 23799ce48e5aSMichal Kubecek } 23809ce48e5aSMichal Kubecek 23819ce48e5aSMichal Kubecek static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 23829ce48e5aSMichal Kubecek { 23839ce48e5aSMichal Kubecek switch (tuna->id) { 23849ce48e5aSMichal Kubecek case ETHTOOL_RX_COPYBREAK: 23859ce48e5aSMichal Kubecek case ETHTOOL_TX_COPYBREAK: 23869ce48e5aSMichal Kubecek if (tuna->len != sizeof(u32) || 23879ce48e5aSMichal Kubecek tuna->type_id != ETHTOOL_TUNABLE_U32) 23889ce48e5aSMichal Kubecek return -EINVAL; 23899ce48e5aSMichal Kubecek break; 23909ce48e5aSMichal Kubecek case ETHTOOL_PFC_PREVENTION_TOUT: 23919ce48e5aSMichal Kubecek if (tuna->len != sizeof(u16) || 23929ce48e5aSMichal Kubecek tuna->type_id != ETHTOOL_TUNABLE_U16) 23939ce48e5aSMichal Kubecek return -EINVAL; 23949ce48e5aSMichal Kubecek break; 23959ce48e5aSMichal Kubecek default: 23969ce48e5aSMichal Kubecek return -EINVAL; 23979ce48e5aSMichal Kubecek } 23989ce48e5aSMichal Kubecek 23999ce48e5aSMichal Kubecek return 0; 24009ce48e5aSMichal Kubecek } 24019ce48e5aSMichal Kubecek 24029ce48e5aSMichal Kubecek static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 24039ce48e5aSMichal Kubecek { 24049ce48e5aSMichal Kubecek int ret; 24059ce48e5aSMichal Kubecek struct ethtool_tunable tuna; 24069ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 24079ce48e5aSMichal Kubecek void *data; 24089ce48e5aSMichal Kubecek 24099ce48e5aSMichal Kubecek if (!ops->get_tunable) 24109ce48e5aSMichal Kubecek return -EOPNOTSUPP; 24119ce48e5aSMichal Kubecek if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 24129ce48e5aSMichal Kubecek return -EFAULT; 24139ce48e5aSMichal Kubecek ret = ethtool_tunable_valid(&tuna); 24149ce48e5aSMichal Kubecek if (ret) 24159ce48e5aSMichal Kubecek return ret; 241680ec82e3SAustin Kim data = kzalloc(tuna.len, GFP_USER); 24179ce48e5aSMichal Kubecek if (!data) 24189ce48e5aSMichal Kubecek return -ENOMEM; 24199ce48e5aSMichal Kubecek ret = ops->get_tunable(dev, &tuna, data); 24209ce48e5aSMichal Kubecek if (ret) 24219ce48e5aSMichal Kubecek goto out; 24229ce48e5aSMichal Kubecek useraddr += sizeof(tuna); 24239ce48e5aSMichal Kubecek ret = -EFAULT; 24249ce48e5aSMichal Kubecek if (copy_to_user(useraddr, data, tuna.len)) 24259ce48e5aSMichal Kubecek goto out; 24269ce48e5aSMichal Kubecek ret = 0; 24279ce48e5aSMichal Kubecek 24289ce48e5aSMichal Kubecek out: 24299ce48e5aSMichal Kubecek kfree(data); 24309ce48e5aSMichal Kubecek return ret; 24319ce48e5aSMichal Kubecek } 24329ce48e5aSMichal Kubecek 24339ce48e5aSMichal Kubecek static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 24349ce48e5aSMichal Kubecek { 24359ce48e5aSMichal Kubecek int ret; 24369ce48e5aSMichal Kubecek struct ethtool_tunable tuna; 24379ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 24389ce48e5aSMichal Kubecek void *data; 24399ce48e5aSMichal Kubecek 24409ce48e5aSMichal Kubecek if (!ops->set_tunable) 24419ce48e5aSMichal Kubecek return -EOPNOTSUPP; 24429ce48e5aSMichal Kubecek if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 24439ce48e5aSMichal Kubecek return -EFAULT; 24449ce48e5aSMichal Kubecek ret = ethtool_tunable_valid(&tuna); 24459ce48e5aSMichal Kubecek if (ret) 24469ce48e5aSMichal Kubecek return ret; 24479ce48e5aSMichal Kubecek useraddr += sizeof(tuna); 24489ce48e5aSMichal Kubecek data = memdup_user(useraddr, tuna.len); 24499ce48e5aSMichal Kubecek if (IS_ERR(data)) 24509ce48e5aSMichal Kubecek return PTR_ERR(data); 24519ce48e5aSMichal Kubecek ret = ops->set_tunable(dev, &tuna, data); 24529ce48e5aSMichal Kubecek 24539ce48e5aSMichal Kubecek kfree(data); 24549ce48e5aSMichal Kubecek return ret; 24559ce48e5aSMichal Kubecek } 24569ce48e5aSMichal Kubecek 24579ce48e5aSMichal Kubecek static noinline_for_stack int 24589ce48e5aSMichal Kubecek ethtool_get_per_queue_coalesce(struct net_device *dev, 24599ce48e5aSMichal Kubecek void __user *useraddr, 24609ce48e5aSMichal Kubecek struct ethtool_per_queue_op *per_queue_opt) 24619ce48e5aSMichal Kubecek { 24629ce48e5aSMichal Kubecek u32 bit; 24639ce48e5aSMichal Kubecek int ret; 24649ce48e5aSMichal Kubecek DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 24659ce48e5aSMichal Kubecek 24669ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_per_queue_coalesce) 24679ce48e5aSMichal Kubecek return -EOPNOTSUPP; 24689ce48e5aSMichal Kubecek 24699ce48e5aSMichal Kubecek useraddr += sizeof(*per_queue_opt); 24709ce48e5aSMichal Kubecek 24719ce48e5aSMichal Kubecek bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 24729ce48e5aSMichal Kubecek MAX_NUM_QUEUE); 24739ce48e5aSMichal Kubecek 24749ce48e5aSMichal Kubecek for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 24759ce48e5aSMichal Kubecek struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 24769ce48e5aSMichal Kubecek 24779ce48e5aSMichal Kubecek ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 24789ce48e5aSMichal Kubecek if (ret != 0) 24799ce48e5aSMichal Kubecek return ret; 24809ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 24819ce48e5aSMichal Kubecek return -EFAULT; 24829ce48e5aSMichal Kubecek useraddr += sizeof(coalesce); 24839ce48e5aSMichal Kubecek } 24849ce48e5aSMichal Kubecek 24859ce48e5aSMichal Kubecek return 0; 24869ce48e5aSMichal Kubecek } 24879ce48e5aSMichal Kubecek 24889ce48e5aSMichal Kubecek static noinline_for_stack int 24899ce48e5aSMichal Kubecek ethtool_set_per_queue_coalesce(struct net_device *dev, 24909ce48e5aSMichal Kubecek void __user *useraddr, 24919ce48e5aSMichal Kubecek struct ethtool_per_queue_op *per_queue_opt) 24929ce48e5aSMichal Kubecek { 24939ce48e5aSMichal Kubecek u32 bit; 24949ce48e5aSMichal Kubecek int i, ret = 0; 24959ce48e5aSMichal Kubecek int n_queue; 24969ce48e5aSMichal Kubecek struct ethtool_coalesce *backup = NULL, *tmp = NULL; 24979ce48e5aSMichal Kubecek DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 24989ce48e5aSMichal Kubecek 24999ce48e5aSMichal Kubecek if ((!dev->ethtool_ops->set_per_queue_coalesce) || 25009ce48e5aSMichal Kubecek (!dev->ethtool_ops->get_per_queue_coalesce)) 25019ce48e5aSMichal Kubecek return -EOPNOTSUPP; 25029ce48e5aSMichal Kubecek 25039ce48e5aSMichal Kubecek useraddr += sizeof(*per_queue_opt); 25049ce48e5aSMichal Kubecek 25059ce48e5aSMichal Kubecek bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 25069ce48e5aSMichal Kubecek n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 25079ce48e5aSMichal Kubecek tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 25089ce48e5aSMichal Kubecek if (!backup) 25099ce48e5aSMichal Kubecek return -ENOMEM; 25109ce48e5aSMichal Kubecek 25119ce48e5aSMichal Kubecek for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 25129ce48e5aSMichal Kubecek struct ethtool_coalesce coalesce; 25139ce48e5aSMichal Kubecek 25149ce48e5aSMichal Kubecek ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 25159ce48e5aSMichal Kubecek if (ret != 0) 25169ce48e5aSMichal Kubecek goto roll_back; 25179ce48e5aSMichal Kubecek 25189ce48e5aSMichal Kubecek tmp++; 25199ce48e5aSMichal Kubecek 25209ce48e5aSMichal Kubecek if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 25219ce48e5aSMichal Kubecek ret = -EFAULT; 25229ce48e5aSMichal Kubecek goto roll_back; 25239ce48e5aSMichal Kubecek } 25249ce48e5aSMichal Kubecek 252595cddcb5SJakub Kicinski if (!ethtool_set_coalesce_supported(dev, &coalesce)) { 252695cddcb5SJakub Kicinski ret = -EOPNOTSUPP; 252795cddcb5SJakub Kicinski goto roll_back; 252895cddcb5SJakub Kicinski } 252995cddcb5SJakub Kicinski 25309ce48e5aSMichal Kubecek ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 25319ce48e5aSMichal Kubecek if (ret != 0) 25329ce48e5aSMichal Kubecek goto roll_back; 25339ce48e5aSMichal Kubecek 25349ce48e5aSMichal Kubecek useraddr += sizeof(coalesce); 25359ce48e5aSMichal Kubecek } 25369ce48e5aSMichal Kubecek 25379ce48e5aSMichal Kubecek roll_back: 25389ce48e5aSMichal Kubecek if (ret != 0) { 25399ce48e5aSMichal Kubecek tmp = backup; 25409ce48e5aSMichal Kubecek for_each_set_bit(i, queue_mask, bit) { 25419ce48e5aSMichal Kubecek dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 25429ce48e5aSMichal Kubecek tmp++; 25439ce48e5aSMichal Kubecek } 25449ce48e5aSMichal Kubecek } 25459ce48e5aSMichal Kubecek kfree(backup); 25469ce48e5aSMichal Kubecek 25479ce48e5aSMichal Kubecek return ret; 25489ce48e5aSMichal Kubecek } 25499ce48e5aSMichal Kubecek 25509ce48e5aSMichal Kubecek static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 25519ce48e5aSMichal Kubecek void __user *useraddr, u32 sub_cmd) 25529ce48e5aSMichal Kubecek { 25539ce48e5aSMichal Kubecek struct ethtool_per_queue_op per_queue_opt; 25549ce48e5aSMichal Kubecek 25559ce48e5aSMichal Kubecek if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 25569ce48e5aSMichal Kubecek return -EFAULT; 25579ce48e5aSMichal Kubecek 25589ce48e5aSMichal Kubecek if (per_queue_opt.sub_command != sub_cmd) 25599ce48e5aSMichal Kubecek return -EINVAL; 25609ce48e5aSMichal Kubecek 25619ce48e5aSMichal Kubecek switch (per_queue_opt.sub_command) { 25629ce48e5aSMichal Kubecek case ETHTOOL_GCOALESCE: 25639ce48e5aSMichal Kubecek return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 25649ce48e5aSMichal Kubecek case ETHTOOL_SCOALESCE: 25659ce48e5aSMichal Kubecek return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 25669ce48e5aSMichal Kubecek default: 25679ce48e5aSMichal Kubecek return -EOPNOTSUPP; 25689d253c02STom Rix } 25699ce48e5aSMichal Kubecek } 25709ce48e5aSMichal Kubecek 25719ce48e5aSMichal Kubecek static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 25729ce48e5aSMichal Kubecek { 25739ce48e5aSMichal Kubecek switch (tuna->id) { 25749ce48e5aSMichal Kubecek case ETHTOOL_PHY_DOWNSHIFT: 25759ce48e5aSMichal Kubecek case ETHTOOL_PHY_FAST_LINK_DOWN: 25769ce48e5aSMichal Kubecek if (tuna->len != sizeof(u8) || 25779ce48e5aSMichal Kubecek tuna->type_id != ETHTOOL_TUNABLE_U8) 25789ce48e5aSMichal Kubecek return -EINVAL; 25799ce48e5aSMichal Kubecek break; 25809ce48e5aSMichal Kubecek case ETHTOOL_PHY_EDPD: 25819ce48e5aSMichal Kubecek if (tuna->len != sizeof(u16) || 25829ce48e5aSMichal Kubecek tuna->type_id != ETHTOOL_TUNABLE_U16) 25839ce48e5aSMichal Kubecek return -EINVAL; 25849ce48e5aSMichal Kubecek break; 25859ce48e5aSMichal Kubecek default: 25869ce48e5aSMichal Kubecek return -EINVAL; 25879ce48e5aSMichal Kubecek } 25889ce48e5aSMichal Kubecek 25899ce48e5aSMichal Kubecek return 0; 25909ce48e5aSMichal Kubecek } 25919ce48e5aSMichal Kubecek 25929ce48e5aSMichal Kubecek static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 25939ce48e5aSMichal Kubecek { 25949ce48e5aSMichal Kubecek struct phy_device *phydev = dev->phydev; 2595c6db31ffSIgor Russkikh struct ethtool_tunable tuna; 2596c6db31ffSIgor Russkikh bool phy_drv_tunable; 25979ce48e5aSMichal Kubecek void *data; 2598c6db31ffSIgor Russkikh int ret; 25999ce48e5aSMichal Kubecek 2600c6db31ffSIgor Russkikh phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2601c6db31ffSIgor Russkikh if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) 26029ce48e5aSMichal Kubecek return -EOPNOTSUPP; 26039ce48e5aSMichal Kubecek if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 26049ce48e5aSMichal Kubecek return -EFAULT; 26059ce48e5aSMichal Kubecek ret = ethtool_phy_tunable_valid(&tuna); 26069ce48e5aSMichal Kubecek if (ret) 26079ce48e5aSMichal Kubecek return ret; 260880ec82e3SAustin Kim data = kzalloc(tuna.len, GFP_USER); 26099ce48e5aSMichal Kubecek if (!data) 26109ce48e5aSMichal Kubecek return -ENOMEM; 2611c6db31ffSIgor Russkikh if (phy_drv_tunable) { 26129ce48e5aSMichal Kubecek mutex_lock(&phydev->lock); 26139ce48e5aSMichal Kubecek ret = phydev->drv->get_tunable(phydev, &tuna, data); 26149ce48e5aSMichal Kubecek mutex_unlock(&phydev->lock); 2615c6db31ffSIgor Russkikh } else { 2616c6db31ffSIgor Russkikh ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); 2617c6db31ffSIgor Russkikh } 26189ce48e5aSMichal Kubecek if (ret) 26199ce48e5aSMichal Kubecek goto out; 26209ce48e5aSMichal Kubecek useraddr += sizeof(tuna); 26219ce48e5aSMichal Kubecek ret = -EFAULT; 26229ce48e5aSMichal Kubecek if (copy_to_user(useraddr, data, tuna.len)) 26239ce48e5aSMichal Kubecek goto out; 26249ce48e5aSMichal Kubecek ret = 0; 26259ce48e5aSMichal Kubecek 26269ce48e5aSMichal Kubecek out: 26279ce48e5aSMichal Kubecek kfree(data); 26289ce48e5aSMichal Kubecek return ret; 26299ce48e5aSMichal Kubecek } 26309ce48e5aSMichal Kubecek 26319ce48e5aSMichal Kubecek static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 26329ce48e5aSMichal Kubecek { 26339ce48e5aSMichal Kubecek struct phy_device *phydev = dev->phydev; 2634c6db31ffSIgor Russkikh struct ethtool_tunable tuna; 2635c6db31ffSIgor Russkikh bool phy_drv_tunable; 26369ce48e5aSMichal Kubecek void *data; 2637c6db31ffSIgor Russkikh int ret; 26389ce48e5aSMichal Kubecek 2639c6db31ffSIgor Russkikh phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; 2640c6db31ffSIgor Russkikh if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) 26419ce48e5aSMichal Kubecek return -EOPNOTSUPP; 26429ce48e5aSMichal Kubecek if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 26439ce48e5aSMichal Kubecek return -EFAULT; 26449ce48e5aSMichal Kubecek ret = ethtool_phy_tunable_valid(&tuna); 26459ce48e5aSMichal Kubecek if (ret) 26469ce48e5aSMichal Kubecek return ret; 26479ce48e5aSMichal Kubecek useraddr += sizeof(tuna); 26489ce48e5aSMichal Kubecek data = memdup_user(useraddr, tuna.len); 26499ce48e5aSMichal Kubecek if (IS_ERR(data)) 26509ce48e5aSMichal Kubecek return PTR_ERR(data); 2651c6db31ffSIgor Russkikh if (phy_drv_tunable) { 26529ce48e5aSMichal Kubecek mutex_lock(&phydev->lock); 26539ce48e5aSMichal Kubecek ret = phydev->drv->set_tunable(phydev, &tuna, data); 26549ce48e5aSMichal Kubecek mutex_unlock(&phydev->lock); 2655c6db31ffSIgor Russkikh } else { 2656c6db31ffSIgor Russkikh ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); 2657c6db31ffSIgor Russkikh } 26589ce48e5aSMichal Kubecek 26599ce48e5aSMichal Kubecek kfree(data); 26609ce48e5aSMichal Kubecek return ret; 26619ce48e5aSMichal Kubecek } 26629ce48e5aSMichal Kubecek 26639ce48e5aSMichal Kubecek static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 26649ce48e5aSMichal Kubecek { 26659ce48e5aSMichal Kubecek struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 26669ce48e5aSMichal Kubecek int rc; 26679ce48e5aSMichal Kubecek 26689ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_fecparam) 26699ce48e5aSMichal Kubecek return -EOPNOTSUPP; 26709ce48e5aSMichal Kubecek 26719ce48e5aSMichal Kubecek rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 26729ce48e5aSMichal Kubecek if (rc) 26739ce48e5aSMichal Kubecek return rc; 26749ce48e5aSMichal Kubecek 2675240e1144SJakub Kicinski if (WARN_ON_ONCE(fecparam.reserved)) 2676240e1144SJakub Kicinski fecparam.reserved = 0; 2677240e1144SJakub Kicinski 26789ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 26799ce48e5aSMichal Kubecek return -EFAULT; 26809ce48e5aSMichal Kubecek return 0; 26819ce48e5aSMichal Kubecek } 26829ce48e5aSMichal Kubecek 26839ce48e5aSMichal Kubecek static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 26849ce48e5aSMichal Kubecek { 26859ce48e5aSMichal Kubecek struct ethtool_fecparam fecparam; 26869ce48e5aSMichal Kubecek 26879ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_fecparam) 26889ce48e5aSMichal Kubecek return -EOPNOTSUPP; 26899ce48e5aSMichal Kubecek 26909ce48e5aSMichal Kubecek if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 26919ce48e5aSMichal Kubecek return -EFAULT; 26929ce48e5aSMichal Kubecek 2693cf2cc0bfSJakub Kicinski if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) 269442ce127dSJakub Kicinski return -EINVAL; 269542ce127dSJakub Kicinski 2696d3b37fc8SJakub Kicinski fecparam.active_fec = 0; 2697240e1144SJakub Kicinski fecparam.reserved = 0; 2698240e1144SJakub Kicinski 26999ce48e5aSMichal Kubecek return dev->ethtool_ops->set_fecparam(dev, &fecparam); 27009ce48e5aSMichal Kubecek } 27019ce48e5aSMichal Kubecek 27029ce48e5aSMichal Kubecek /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 27039ce48e5aSMichal Kubecek 2704a554bf96SArnd Bergmann int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) 27059ce48e5aSMichal Kubecek { 27069ce48e5aSMichal Kubecek struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); 27079ce48e5aSMichal Kubecek u32 ethcmd, sub_cmd; 27089ce48e5aSMichal Kubecek int rc; 27099ce48e5aSMichal Kubecek netdev_features_t old_features; 27109ce48e5aSMichal Kubecek 2711f32a2137SHeiner Kallweit if (!dev) 27129ce48e5aSMichal Kubecek return -ENODEV; 27139ce48e5aSMichal Kubecek 27149ce48e5aSMichal Kubecek if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 27159ce48e5aSMichal Kubecek return -EFAULT; 27169ce48e5aSMichal Kubecek 27179ce48e5aSMichal Kubecek if (ethcmd == ETHTOOL_PERQUEUE) { 27189ce48e5aSMichal Kubecek if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 27199ce48e5aSMichal Kubecek return -EFAULT; 27209ce48e5aSMichal Kubecek } else { 27219ce48e5aSMichal Kubecek sub_cmd = ethcmd; 27229ce48e5aSMichal Kubecek } 27239ce48e5aSMichal Kubecek /* Allow some commands to be done by anyone */ 27249ce48e5aSMichal Kubecek switch (sub_cmd) { 27259ce48e5aSMichal Kubecek case ETHTOOL_GSET: 27269ce48e5aSMichal Kubecek case ETHTOOL_GDRVINFO: 27279ce48e5aSMichal Kubecek case ETHTOOL_GMSGLVL: 27289ce48e5aSMichal Kubecek case ETHTOOL_GLINK: 27299ce48e5aSMichal Kubecek case ETHTOOL_GCOALESCE: 27309ce48e5aSMichal Kubecek case ETHTOOL_GRINGPARAM: 27319ce48e5aSMichal Kubecek case ETHTOOL_GPAUSEPARAM: 27329ce48e5aSMichal Kubecek case ETHTOOL_GRXCSUM: 27339ce48e5aSMichal Kubecek case ETHTOOL_GTXCSUM: 27349ce48e5aSMichal Kubecek case ETHTOOL_GSG: 27359ce48e5aSMichal Kubecek case ETHTOOL_GSSET_INFO: 27369ce48e5aSMichal Kubecek case ETHTOOL_GSTRINGS: 27379ce48e5aSMichal Kubecek case ETHTOOL_GSTATS: 27389ce48e5aSMichal Kubecek case ETHTOOL_GPHYSTATS: 27399ce48e5aSMichal Kubecek case ETHTOOL_GTSO: 27409ce48e5aSMichal Kubecek case ETHTOOL_GPERMADDR: 27419ce48e5aSMichal Kubecek case ETHTOOL_GUFO: 27429ce48e5aSMichal Kubecek case ETHTOOL_GGSO: 27439ce48e5aSMichal Kubecek case ETHTOOL_GGRO: 27449ce48e5aSMichal Kubecek case ETHTOOL_GFLAGS: 27459ce48e5aSMichal Kubecek case ETHTOOL_GPFLAGS: 27469ce48e5aSMichal Kubecek case ETHTOOL_GRXFH: 27479ce48e5aSMichal Kubecek case ETHTOOL_GRXRINGS: 27489ce48e5aSMichal Kubecek case ETHTOOL_GRXCLSRLCNT: 27499ce48e5aSMichal Kubecek case ETHTOOL_GRXCLSRULE: 27509ce48e5aSMichal Kubecek case ETHTOOL_GRXCLSRLALL: 27519ce48e5aSMichal Kubecek case ETHTOOL_GRXFHINDIR: 27529ce48e5aSMichal Kubecek case ETHTOOL_GRSSH: 27539ce48e5aSMichal Kubecek case ETHTOOL_GFEATURES: 27549ce48e5aSMichal Kubecek case ETHTOOL_GCHANNELS: 27559ce48e5aSMichal Kubecek case ETHTOOL_GET_TS_INFO: 27569ce48e5aSMichal Kubecek case ETHTOOL_GEEE: 27579ce48e5aSMichal Kubecek case ETHTOOL_GTUNABLE: 27589ce48e5aSMichal Kubecek case ETHTOOL_PHY_GTUNABLE: 27599ce48e5aSMichal Kubecek case ETHTOOL_GLINKSETTINGS: 27609ce48e5aSMichal Kubecek case ETHTOOL_GFECPARAM: 27619ce48e5aSMichal Kubecek break; 27629ce48e5aSMichal Kubecek default: 27639ce48e5aSMichal Kubecek if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 27649ce48e5aSMichal Kubecek return -EPERM; 27659ce48e5aSMichal Kubecek } 27669ce48e5aSMichal Kubecek 2767f32a2137SHeiner Kallweit if (dev->dev.parent) 2768f32a2137SHeiner Kallweit pm_runtime_get_sync(dev->dev.parent); 2769f32a2137SHeiner Kallweit 2770f32a2137SHeiner Kallweit if (!netif_device_present(dev)) { 2771f32a2137SHeiner Kallweit rc = -ENODEV; 2772f32a2137SHeiner Kallweit goto out; 2773f32a2137SHeiner Kallweit } 2774f32a2137SHeiner Kallweit 27759ce48e5aSMichal Kubecek if (dev->ethtool_ops->begin) { 27769ce48e5aSMichal Kubecek rc = dev->ethtool_ops->begin(dev); 27779ce48e5aSMichal Kubecek if (rc < 0) 2778f32a2137SHeiner Kallweit goto out; 27799ce48e5aSMichal Kubecek } 27809ce48e5aSMichal Kubecek old_features = dev->features; 27819ce48e5aSMichal Kubecek 27829ce48e5aSMichal Kubecek switch (ethcmd) { 27839ce48e5aSMichal Kubecek case ETHTOOL_GSET: 27849ce48e5aSMichal Kubecek rc = ethtool_get_settings(dev, useraddr); 27859ce48e5aSMichal Kubecek break; 27869ce48e5aSMichal Kubecek case ETHTOOL_SSET: 27879ce48e5aSMichal Kubecek rc = ethtool_set_settings(dev, useraddr); 27889ce48e5aSMichal Kubecek break; 27899ce48e5aSMichal Kubecek case ETHTOOL_GDRVINFO: 27909ce48e5aSMichal Kubecek rc = ethtool_get_drvinfo(dev, useraddr); 27919ce48e5aSMichal Kubecek break; 27929ce48e5aSMichal Kubecek case ETHTOOL_GREGS: 27939ce48e5aSMichal Kubecek rc = ethtool_get_regs(dev, useraddr); 27949ce48e5aSMichal Kubecek break; 27959ce48e5aSMichal Kubecek case ETHTOOL_GWOL: 27969ce48e5aSMichal Kubecek rc = ethtool_get_wol(dev, useraddr); 27979ce48e5aSMichal Kubecek break; 27989ce48e5aSMichal Kubecek case ETHTOOL_SWOL: 27999ce48e5aSMichal Kubecek rc = ethtool_set_wol(dev, useraddr); 28009ce48e5aSMichal Kubecek break; 28019ce48e5aSMichal Kubecek case ETHTOOL_GMSGLVL: 28029ce48e5aSMichal Kubecek rc = ethtool_get_value(dev, useraddr, ethcmd, 28039ce48e5aSMichal Kubecek dev->ethtool_ops->get_msglevel); 28049ce48e5aSMichal Kubecek break; 28059ce48e5aSMichal Kubecek case ETHTOOL_SMSGLVL: 28069ce48e5aSMichal Kubecek rc = ethtool_set_value_void(dev, useraddr, 28079ce48e5aSMichal Kubecek dev->ethtool_ops->set_msglevel); 28080bda7af3SMichal Kubecek if (!rc) 28090bda7af3SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 28109ce48e5aSMichal Kubecek break; 28119ce48e5aSMichal Kubecek case ETHTOOL_GEEE: 28129ce48e5aSMichal Kubecek rc = ethtool_get_eee(dev, useraddr); 28139ce48e5aSMichal Kubecek break; 28149ce48e5aSMichal Kubecek case ETHTOOL_SEEE: 28159ce48e5aSMichal Kubecek rc = ethtool_set_eee(dev, useraddr); 28169ce48e5aSMichal Kubecek break; 28179ce48e5aSMichal Kubecek case ETHTOOL_NWAY_RST: 28189ce48e5aSMichal Kubecek rc = ethtool_nway_reset(dev); 28199ce48e5aSMichal Kubecek break; 28209ce48e5aSMichal Kubecek case ETHTOOL_GLINK: 28219ce48e5aSMichal Kubecek rc = ethtool_get_link(dev, useraddr); 28229ce48e5aSMichal Kubecek break; 28239ce48e5aSMichal Kubecek case ETHTOOL_GEEPROM: 28249ce48e5aSMichal Kubecek rc = ethtool_get_eeprom(dev, useraddr); 28259ce48e5aSMichal Kubecek break; 28269ce48e5aSMichal Kubecek case ETHTOOL_SEEPROM: 28279ce48e5aSMichal Kubecek rc = ethtool_set_eeprom(dev, useraddr); 28289ce48e5aSMichal Kubecek break; 28299ce48e5aSMichal Kubecek case ETHTOOL_GCOALESCE: 28309ce48e5aSMichal Kubecek rc = ethtool_get_coalesce(dev, useraddr); 28319ce48e5aSMichal Kubecek break; 28329ce48e5aSMichal Kubecek case ETHTOOL_SCOALESCE: 28339ce48e5aSMichal Kubecek rc = ethtool_set_coalesce(dev, useraddr); 28349ce48e5aSMichal Kubecek break; 28359ce48e5aSMichal Kubecek case ETHTOOL_GRINGPARAM: 28369ce48e5aSMichal Kubecek rc = ethtool_get_ringparam(dev, useraddr); 28379ce48e5aSMichal Kubecek break; 28389ce48e5aSMichal Kubecek case ETHTOOL_SRINGPARAM: 28399ce48e5aSMichal Kubecek rc = ethtool_set_ringparam(dev, useraddr); 28409ce48e5aSMichal Kubecek break; 28419ce48e5aSMichal Kubecek case ETHTOOL_GPAUSEPARAM: 28429ce48e5aSMichal Kubecek rc = ethtool_get_pauseparam(dev, useraddr); 28439ce48e5aSMichal Kubecek break; 28449ce48e5aSMichal Kubecek case ETHTOOL_SPAUSEPARAM: 28459ce48e5aSMichal Kubecek rc = ethtool_set_pauseparam(dev, useraddr); 28469ce48e5aSMichal Kubecek break; 28479ce48e5aSMichal Kubecek case ETHTOOL_TEST: 28489ce48e5aSMichal Kubecek rc = ethtool_self_test(dev, useraddr); 28499ce48e5aSMichal Kubecek break; 28509ce48e5aSMichal Kubecek case ETHTOOL_GSTRINGS: 28519ce48e5aSMichal Kubecek rc = ethtool_get_strings(dev, useraddr); 28529ce48e5aSMichal Kubecek break; 28539ce48e5aSMichal Kubecek case ETHTOOL_PHYS_ID: 28549ce48e5aSMichal Kubecek rc = ethtool_phys_id(dev, useraddr); 28559ce48e5aSMichal Kubecek break; 28569ce48e5aSMichal Kubecek case ETHTOOL_GSTATS: 28579ce48e5aSMichal Kubecek rc = ethtool_get_stats(dev, useraddr); 28589ce48e5aSMichal Kubecek break; 28599ce48e5aSMichal Kubecek case ETHTOOL_GPERMADDR: 28609ce48e5aSMichal Kubecek rc = ethtool_get_perm_addr(dev, useraddr); 28619ce48e5aSMichal Kubecek break; 28629ce48e5aSMichal Kubecek case ETHTOOL_GFLAGS: 28639ce48e5aSMichal Kubecek rc = ethtool_get_value(dev, useraddr, ethcmd, 28649ce48e5aSMichal Kubecek __ethtool_get_flags); 28659ce48e5aSMichal Kubecek break; 28669ce48e5aSMichal Kubecek case ETHTOOL_SFLAGS: 28679ce48e5aSMichal Kubecek rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 28689ce48e5aSMichal Kubecek break; 28699ce48e5aSMichal Kubecek case ETHTOOL_GPFLAGS: 28709ce48e5aSMichal Kubecek rc = ethtool_get_value(dev, useraddr, ethcmd, 28719ce48e5aSMichal Kubecek dev->ethtool_ops->get_priv_flags); 2872111dcba3SMichal Kubecek if (!rc) 2873111dcba3SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); 28749ce48e5aSMichal Kubecek break; 28759ce48e5aSMichal Kubecek case ETHTOOL_SPFLAGS: 28769ce48e5aSMichal Kubecek rc = ethtool_set_value(dev, useraddr, 28779ce48e5aSMichal Kubecek dev->ethtool_ops->set_priv_flags); 28789ce48e5aSMichal Kubecek break; 28799ce48e5aSMichal Kubecek case ETHTOOL_GRXFH: 28809ce48e5aSMichal Kubecek case ETHTOOL_GRXRINGS: 28819ce48e5aSMichal Kubecek case ETHTOOL_GRXCLSRLCNT: 28829ce48e5aSMichal Kubecek case ETHTOOL_GRXCLSRULE: 28839ce48e5aSMichal Kubecek case ETHTOOL_GRXCLSRLALL: 28849ce48e5aSMichal Kubecek rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 28859ce48e5aSMichal Kubecek break; 28869ce48e5aSMichal Kubecek case ETHTOOL_SRXFH: 28879ce48e5aSMichal Kubecek case ETHTOOL_SRXCLSRLDEL: 28889ce48e5aSMichal Kubecek case ETHTOOL_SRXCLSRLINS: 28899ce48e5aSMichal Kubecek rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 28909ce48e5aSMichal Kubecek break; 28919ce48e5aSMichal Kubecek case ETHTOOL_FLASHDEV: 28929ce48e5aSMichal Kubecek rc = ethtool_flash_device(dev, useraddr); 28939ce48e5aSMichal Kubecek break; 28949ce48e5aSMichal Kubecek case ETHTOOL_RESET: 28959ce48e5aSMichal Kubecek rc = ethtool_reset(dev, useraddr); 28969ce48e5aSMichal Kubecek break; 28979ce48e5aSMichal Kubecek case ETHTOOL_GSSET_INFO: 28989ce48e5aSMichal Kubecek rc = ethtool_get_sset_info(dev, useraddr); 28999ce48e5aSMichal Kubecek break; 29009ce48e5aSMichal Kubecek case ETHTOOL_GRXFHINDIR: 29019ce48e5aSMichal Kubecek rc = ethtool_get_rxfh_indir(dev, useraddr); 29029ce48e5aSMichal Kubecek break; 29039ce48e5aSMichal Kubecek case ETHTOOL_SRXFHINDIR: 29049ce48e5aSMichal Kubecek rc = ethtool_set_rxfh_indir(dev, useraddr); 29059ce48e5aSMichal Kubecek break; 29069ce48e5aSMichal Kubecek case ETHTOOL_GRSSH: 29079ce48e5aSMichal Kubecek rc = ethtool_get_rxfh(dev, useraddr); 29089ce48e5aSMichal Kubecek break; 29099ce48e5aSMichal Kubecek case ETHTOOL_SRSSH: 29109ce48e5aSMichal Kubecek rc = ethtool_set_rxfh(dev, useraddr); 29119ce48e5aSMichal Kubecek break; 29129ce48e5aSMichal Kubecek case ETHTOOL_GFEATURES: 29139ce48e5aSMichal Kubecek rc = ethtool_get_features(dev, useraddr); 29149ce48e5aSMichal Kubecek break; 29159ce48e5aSMichal Kubecek case ETHTOOL_SFEATURES: 29169ce48e5aSMichal Kubecek rc = ethtool_set_features(dev, useraddr); 29179ce48e5aSMichal Kubecek break; 29189ce48e5aSMichal Kubecek case ETHTOOL_GTXCSUM: 29199ce48e5aSMichal Kubecek case ETHTOOL_GRXCSUM: 29209ce48e5aSMichal Kubecek case ETHTOOL_GSG: 29219ce48e5aSMichal Kubecek case ETHTOOL_GTSO: 29229ce48e5aSMichal Kubecek case ETHTOOL_GGSO: 29239ce48e5aSMichal Kubecek case ETHTOOL_GGRO: 29249ce48e5aSMichal Kubecek rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 29259ce48e5aSMichal Kubecek break; 29269ce48e5aSMichal Kubecek case ETHTOOL_STXCSUM: 29279ce48e5aSMichal Kubecek case ETHTOOL_SRXCSUM: 29289ce48e5aSMichal Kubecek case ETHTOOL_SSG: 29299ce48e5aSMichal Kubecek case ETHTOOL_STSO: 29309ce48e5aSMichal Kubecek case ETHTOOL_SGSO: 29319ce48e5aSMichal Kubecek case ETHTOOL_SGRO: 29329ce48e5aSMichal Kubecek rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 29339ce48e5aSMichal Kubecek break; 29349ce48e5aSMichal Kubecek case ETHTOOL_GCHANNELS: 29359ce48e5aSMichal Kubecek rc = ethtool_get_channels(dev, useraddr); 29369ce48e5aSMichal Kubecek break; 29379ce48e5aSMichal Kubecek case ETHTOOL_SCHANNELS: 29389ce48e5aSMichal Kubecek rc = ethtool_set_channels(dev, useraddr); 29399ce48e5aSMichal Kubecek break; 29409ce48e5aSMichal Kubecek case ETHTOOL_SET_DUMP: 29419ce48e5aSMichal Kubecek rc = ethtool_set_dump(dev, useraddr); 29429ce48e5aSMichal Kubecek break; 29439ce48e5aSMichal Kubecek case ETHTOOL_GET_DUMP_FLAG: 29449ce48e5aSMichal Kubecek rc = ethtool_get_dump_flag(dev, useraddr); 29459ce48e5aSMichal Kubecek break; 29469ce48e5aSMichal Kubecek case ETHTOOL_GET_DUMP_DATA: 29479ce48e5aSMichal Kubecek rc = ethtool_get_dump_data(dev, useraddr); 29489ce48e5aSMichal Kubecek break; 29499ce48e5aSMichal Kubecek case ETHTOOL_GET_TS_INFO: 29509ce48e5aSMichal Kubecek rc = ethtool_get_ts_info(dev, useraddr); 29519ce48e5aSMichal Kubecek break; 29529ce48e5aSMichal Kubecek case ETHTOOL_GMODULEINFO: 29539ce48e5aSMichal Kubecek rc = ethtool_get_module_info(dev, useraddr); 29549ce48e5aSMichal Kubecek break; 29559ce48e5aSMichal Kubecek case ETHTOOL_GMODULEEEPROM: 29569ce48e5aSMichal Kubecek rc = ethtool_get_module_eeprom(dev, useraddr); 29579ce48e5aSMichal Kubecek break; 29589ce48e5aSMichal Kubecek case ETHTOOL_GTUNABLE: 29599ce48e5aSMichal Kubecek rc = ethtool_get_tunable(dev, useraddr); 29609ce48e5aSMichal Kubecek break; 29619ce48e5aSMichal Kubecek case ETHTOOL_STUNABLE: 29629ce48e5aSMichal Kubecek rc = ethtool_set_tunable(dev, useraddr); 29639ce48e5aSMichal Kubecek break; 29649ce48e5aSMichal Kubecek case ETHTOOL_GPHYSTATS: 29659ce48e5aSMichal Kubecek rc = ethtool_get_phy_stats(dev, useraddr); 29669ce48e5aSMichal Kubecek break; 29679ce48e5aSMichal Kubecek case ETHTOOL_PERQUEUE: 29689ce48e5aSMichal Kubecek rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 29699ce48e5aSMichal Kubecek break; 29709ce48e5aSMichal Kubecek case ETHTOOL_GLINKSETTINGS: 29719ce48e5aSMichal Kubecek rc = ethtool_get_link_ksettings(dev, useraddr); 29729ce48e5aSMichal Kubecek break; 29739ce48e5aSMichal Kubecek case ETHTOOL_SLINKSETTINGS: 29749ce48e5aSMichal Kubecek rc = ethtool_set_link_ksettings(dev, useraddr); 29759ce48e5aSMichal Kubecek break; 29769ce48e5aSMichal Kubecek case ETHTOOL_PHY_GTUNABLE: 29779ce48e5aSMichal Kubecek rc = get_phy_tunable(dev, useraddr); 29789ce48e5aSMichal Kubecek break; 29799ce48e5aSMichal Kubecek case ETHTOOL_PHY_STUNABLE: 29809ce48e5aSMichal Kubecek rc = set_phy_tunable(dev, useraddr); 29819ce48e5aSMichal Kubecek break; 29829ce48e5aSMichal Kubecek case ETHTOOL_GFECPARAM: 29839ce48e5aSMichal Kubecek rc = ethtool_get_fecparam(dev, useraddr); 29849ce48e5aSMichal Kubecek break; 29859ce48e5aSMichal Kubecek case ETHTOOL_SFECPARAM: 29869ce48e5aSMichal Kubecek rc = ethtool_set_fecparam(dev, useraddr); 29879ce48e5aSMichal Kubecek break; 29889ce48e5aSMichal Kubecek default: 29899ce48e5aSMichal Kubecek rc = -EOPNOTSUPP; 29909ce48e5aSMichal Kubecek } 29919ce48e5aSMichal Kubecek 29929ce48e5aSMichal Kubecek if (dev->ethtool_ops->complete) 29939ce48e5aSMichal Kubecek dev->ethtool_ops->complete(dev); 29949ce48e5aSMichal Kubecek 29959ce48e5aSMichal Kubecek if (old_features != dev->features) 29969ce48e5aSMichal Kubecek netdev_features_change(dev); 2997f32a2137SHeiner Kallweit out: 2998f32a2137SHeiner Kallweit if (dev->dev.parent) 2999f32a2137SHeiner Kallweit pm_runtime_put(dev->dev.parent); 30009ce48e5aSMichal Kubecek 30019ce48e5aSMichal Kubecek return rc; 30029ce48e5aSMichal Kubecek } 30039ce48e5aSMichal Kubecek 30049ce48e5aSMichal Kubecek struct ethtool_rx_flow_key { 30059ce48e5aSMichal Kubecek struct flow_dissector_key_basic basic; 30069ce48e5aSMichal Kubecek union { 30079ce48e5aSMichal Kubecek struct flow_dissector_key_ipv4_addrs ipv4; 30089ce48e5aSMichal Kubecek struct flow_dissector_key_ipv6_addrs ipv6; 30099ce48e5aSMichal Kubecek }; 30109ce48e5aSMichal Kubecek struct flow_dissector_key_ports tp; 30119ce48e5aSMichal Kubecek struct flow_dissector_key_ip ip; 30129ce48e5aSMichal Kubecek struct flow_dissector_key_vlan vlan; 30139ce48e5aSMichal Kubecek struct flow_dissector_key_eth_addrs eth_addrs; 30149ce48e5aSMichal Kubecek } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 30159ce48e5aSMichal Kubecek 30169ce48e5aSMichal Kubecek struct ethtool_rx_flow_match { 30179ce48e5aSMichal Kubecek struct flow_dissector dissector; 30189ce48e5aSMichal Kubecek struct ethtool_rx_flow_key key; 30199ce48e5aSMichal Kubecek struct ethtool_rx_flow_key mask; 30209ce48e5aSMichal Kubecek }; 30219ce48e5aSMichal Kubecek 30229ce48e5aSMichal Kubecek struct ethtool_rx_flow_rule * 30239ce48e5aSMichal Kubecek ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 30249ce48e5aSMichal Kubecek { 30259ce48e5aSMichal Kubecek const struct ethtool_rx_flow_spec *fs = input->fs; 30269ce48e5aSMichal Kubecek static struct in6_addr zero_addr = {}; 30279ce48e5aSMichal Kubecek struct ethtool_rx_flow_match *match; 30289ce48e5aSMichal Kubecek struct ethtool_rx_flow_rule *flow; 30299ce48e5aSMichal Kubecek struct flow_action_entry *act; 30309ce48e5aSMichal Kubecek 30319ce48e5aSMichal Kubecek flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 30329ce48e5aSMichal Kubecek sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 30339ce48e5aSMichal Kubecek if (!flow) 30349ce48e5aSMichal Kubecek return ERR_PTR(-ENOMEM); 30359ce48e5aSMichal Kubecek 30369ce48e5aSMichal Kubecek /* ethtool_rx supports only one single action per rule. */ 30379ce48e5aSMichal Kubecek flow->rule = flow_rule_alloc(1); 30389ce48e5aSMichal Kubecek if (!flow->rule) { 30399ce48e5aSMichal Kubecek kfree(flow); 30409ce48e5aSMichal Kubecek return ERR_PTR(-ENOMEM); 30419ce48e5aSMichal Kubecek } 30429ce48e5aSMichal Kubecek 30439ce48e5aSMichal Kubecek match = (struct ethtool_rx_flow_match *)flow->priv; 30449ce48e5aSMichal Kubecek flow->rule->match.dissector = &match->dissector; 30459ce48e5aSMichal Kubecek flow->rule->match.mask = &match->mask; 30469ce48e5aSMichal Kubecek flow->rule->match.key = &match->key; 30479ce48e5aSMichal Kubecek 30489ce48e5aSMichal Kubecek match->mask.basic.n_proto = htons(0xffff); 30499ce48e5aSMichal Kubecek 30509ce48e5aSMichal Kubecek switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 30519ce48e5aSMichal Kubecek case ETHER_FLOW: { 30529ce48e5aSMichal Kubecek const struct ethhdr *ether_spec, *ether_m_spec; 30539ce48e5aSMichal Kubecek 30549ce48e5aSMichal Kubecek ether_spec = &fs->h_u.ether_spec; 30559ce48e5aSMichal Kubecek ether_m_spec = &fs->m_u.ether_spec; 30569ce48e5aSMichal Kubecek 30579ce48e5aSMichal Kubecek if (!is_zero_ether_addr(ether_m_spec->h_source)) { 30589ce48e5aSMichal Kubecek ether_addr_copy(match->key.eth_addrs.src, 30599ce48e5aSMichal Kubecek ether_spec->h_source); 30609ce48e5aSMichal Kubecek ether_addr_copy(match->mask.eth_addrs.src, 30619ce48e5aSMichal Kubecek ether_m_spec->h_source); 30629ce48e5aSMichal Kubecek } 30639ce48e5aSMichal Kubecek if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 30649ce48e5aSMichal Kubecek ether_addr_copy(match->key.eth_addrs.dst, 30659ce48e5aSMichal Kubecek ether_spec->h_dest); 30669ce48e5aSMichal Kubecek ether_addr_copy(match->mask.eth_addrs.dst, 30679ce48e5aSMichal Kubecek ether_m_spec->h_dest); 30689ce48e5aSMichal Kubecek } 30699ce48e5aSMichal Kubecek if (ether_m_spec->h_proto) { 30709ce48e5aSMichal Kubecek match->key.basic.n_proto = ether_spec->h_proto; 30719ce48e5aSMichal Kubecek match->mask.basic.n_proto = ether_m_spec->h_proto; 30729ce48e5aSMichal Kubecek } 30739ce48e5aSMichal Kubecek } 30749ce48e5aSMichal Kubecek break; 30759ce48e5aSMichal Kubecek case TCP_V4_FLOW: 30769ce48e5aSMichal Kubecek case UDP_V4_FLOW: { 30779ce48e5aSMichal Kubecek const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 30789ce48e5aSMichal Kubecek 30799ce48e5aSMichal Kubecek match->key.basic.n_proto = htons(ETH_P_IP); 30809ce48e5aSMichal Kubecek 30819ce48e5aSMichal Kubecek v4_spec = &fs->h_u.tcp_ip4_spec; 30829ce48e5aSMichal Kubecek v4_m_spec = &fs->m_u.tcp_ip4_spec; 30839ce48e5aSMichal Kubecek 30849ce48e5aSMichal Kubecek if (v4_m_spec->ip4src) { 30859ce48e5aSMichal Kubecek match->key.ipv4.src = v4_spec->ip4src; 30869ce48e5aSMichal Kubecek match->mask.ipv4.src = v4_m_spec->ip4src; 30879ce48e5aSMichal Kubecek } 30889ce48e5aSMichal Kubecek if (v4_m_spec->ip4dst) { 30899ce48e5aSMichal Kubecek match->key.ipv4.dst = v4_spec->ip4dst; 30909ce48e5aSMichal Kubecek match->mask.ipv4.dst = v4_m_spec->ip4dst; 30919ce48e5aSMichal Kubecek } 30929ce48e5aSMichal Kubecek if (v4_m_spec->ip4src || 30939ce48e5aSMichal Kubecek v4_m_spec->ip4dst) { 30949ce48e5aSMichal Kubecek match->dissector.used_keys |= 30959ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 30969ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 30979ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, ipv4); 30989ce48e5aSMichal Kubecek } 30999ce48e5aSMichal Kubecek if (v4_m_spec->psrc) { 31009ce48e5aSMichal Kubecek match->key.tp.src = v4_spec->psrc; 31019ce48e5aSMichal Kubecek match->mask.tp.src = v4_m_spec->psrc; 31029ce48e5aSMichal Kubecek } 31039ce48e5aSMichal Kubecek if (v4_m_spec->pdst) { 31049ce48e5aSMichal Kubecek match->key.tp.dst = v4_spec->pdst; 31059ce48e5aSMichal Kubecek match->mask.tp.dst = v4_m_spec->pdst; 31069ce48e5aSMichal Kubecek } 31079ce48e5aSMichal Kubecek if (v4_m_spec->psrc || 31089ce48e5aSMichal Kubecek v4_m_spec->pdst) { 31099ce48e5aSMichal Kubecek match->dissector.used_keys |= 31109ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_PORTS); 31119ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 31129ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, tp); 31139ce48e5aSMichal Kubecek } 31149ce48e5aSMichal Kubecek if (v4_m_spec->tos) { 31159ce48e5aSMichal Kubecek match->key.ip.tos = v4_spec->tos; 31169ce48e5aSMichal Kubecek match->mask.ip.tos = v4_m_spec->tos; 31179ce48e5aSMichal Kubecek match->dissector.used_keys |= 31189ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_IP); 31199ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 31209ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, ip); 31219ce48e5aSMichal Kubecek } 31229ce48e5aSMichal Kubecek } 31239ce48e5aSMichal Kubecek break; 31249ce48e5aSMichal Kubecek case TCP_V6_FLOW: 31259ce48e5aSMichal Kubecek case UDP_V6_FLOW: { 31269ce48e5aSMichal Kubecek const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 31279ce48e5aSMichal Kubecek 31289ce48e5aSMichal Kubecek match->key.basic.n_proto = htons(ETH_P_IPV6); 31299ce48e5aSMichal Kubecek 31309ce48e5aSMichal Kubecek v6_spec = &fs->h_u.tcp_ip6_spec; 31319ce48e5aSMichal Kubecek v6_m_spec = &fs->m_u.tcp_ip6_spec; 31329ce48e5aSMichal Kubecek if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) { 31339ce48e5aSMichal Kubecek memcpy(&match->key.ipv6.src, v6_spec->ip6src, 31349ce48e5aSMichal Kubecek sizeof(match->key.ipv6.src)); 31359ce48e5aSMichal Kubecek memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 31369ce48e5aSMichal Kubecek sizeof(match->mask.ipv6.src)); 31379ce48e5aSMichal Kubecek } 31389ce48e5aSMichal Kubecek if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) { 31399ce48e5aSMichal Kubecek memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 31409ce48e5aSMichal Kubecek sizeof(match->key.ipv6.dst)); 31419ce48e5aSMichal Kubecek memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 31429ce48e5aSMichal Kubecek sizeof(match->mask.ipv6.dst)); 31439ce48e5aSMichal Kubecek } 31449ce48e5aSMichal Kubecek if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) || 314521a739c6SGaurav Singh memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) { 31469ce48e5aSMichal Kubecek match->dissector.used_keys |= 31479ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 31489ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 31499ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, ipv6); 31509ce48e5aSMichal Kubecek } 31519ce48e5aSMichal Kubecek if (v6_m_spec->psrc) { 31529ce48e5aSMichal Kubecek match->key.tp.src = v6_spec->psrc; 31539ce48e5aSMichal Kubecek match->mask.tp.src = v6_m_spec->psrc; 31549ce48e5aSMichal Kubecek } 31559ce48e5aSMichal Kubecek if (v6_m_spec->pdst) { 31569ce48e5aSMichal Kubecek match->key.tp.dst = v6_spec->pdst; 31579ce48e5aSMichal Kubecek match->mask.tp.dst = v6_m_spec->pdst; 31589ce48e5aSMichal Kubecek } 31599ce48e5aSMichal Kubecek if (v6_m_spec->psrc || 31609ce48e5aSMichal Kubecek v6_m_spec->pdst) { 31619ce48e5aSMichal Kubecek match->dissector.used_keys |= 31629ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_PORTS); 31639ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 31649ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, tp); 31659ce48e5aSMichal Kubecek } 31669ce48e5aSMichal Kubecek if (v6_m_spec->tclass) { 31679ce48e5aSMichal Kubecek match->key.ip.tos = v6_spec->tclass; 31689ce48e5aSMichal Kubecek match->mask.ip.tos = v6_m_spec->tclass; 31699ce48e5aSMichal Kubecek match->dissector.used_keys |= 31709ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_IP); 31719ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 31729ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, ip); 31739ce48e5aSMichal Kubecek } 31749ce48e5aSMichal Kubecek } 31759ce48e5aSMichal Kubecek break; 31769ce48e5aSMichal Kubecek default: 31779ce48e5aSMichal Kubecek ethtool_rx_flow_rule_destroy(flow); 31789ce48e5aSMichal Kubecek return ERR_PTR(-EINVAL); 31799ce48e5aSMichal Kubecek } 31809ce48e5aSMichal Kubecek 31819ce48e5aSMichal Kubecek switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 31829ce48e5aSMichal Kubecek case TCP_V4_FLOW: 31839ce48e5aSMichal Kubecek case TCP_V6_FLOW: 31849ce48e5aSMichal Kubecek match->key.basic.ip_proto = IPPROTO_TCP; 3185d0a84e1fSVishal Kulkarni match->mask.basic.ip_proto = 0xff; 31869ce48e5aSMichal Kubecek break; 31879ce48e5aSMichal Kubecek case UDP_V4_FLOW: 31889ce48e5aSMichal Kubecek case UDP_V6_FLOW: 31899ce48e5aSMichal Kubecek match->key.basic.ip_proto = IPPROTO_UDP; 3190d0a84e1fSVishal Kulkarni match->mask.basic.ip_proto = 0xff; 31919ce48e5aSMichal Kubecek break; 31929ce48e5aSMichal Kubecek } 31939ce48e5aSMichal Kubecek 31949ce48e5aSMichal Kubecek match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC); 31959ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 31969ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, basic); 31979ce48e5aSMichal Kubecek 31989ce48e5aSMichal Kubecek if (fs->flow_type & FLOW_EXT) { 31999ce48e5aSMichal Kubecek const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 32009ce48e5aSMichal Kubecek const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 32019ce48e5aSMichal Kubecek 32029ce48e5aSMichal Kubecek if (ext_m_spec->vlan_etype) { 32039ce48e5aSMichal Kubecek match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 32049ce48e5aSMichal Kubecek match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 32059ce48e5aSMichal Kubecek } 32069ce48e5aSMichal Kubecek 32079ce48e5aSMichal Kubecek if (ext_m_spec->vlan_tci) { 32089ce48e5aSMichal Kubecek match->key.vlan.vlan_id = 32099ce48e5aSMichal Kubecek ntohs(ext_h_spec->vlan_tci) & 0x0fff; 32109ce48e5aSMichal Kubecek match->mask.vlan.vlan_id = 32119ce48e5aSMichal Kubecek ntohs(ext_m_spec->vlan_tci) & 0x0fff; 32129ce48e5aSMichal Kubecek 32139ce48e5aSMichal Kubecek match->key.vlan.vlan_dei = 32149ce48e5aSMichal Kubecek !!(ext_h_spec->vlan_tci & htons(0x1000)); 32159ce48e5aSMichal Kubecek match->mask.vlan.vlan_dei = 32169ce48e5aSMichal Kubecek !!(ext_m_spec->vlan_tci & htons(0x1000)); 32179ce48e5aSMichal Kubecek 32189ce48e5aSMichal Kubecek match->key.vlan.vlan_priority = 32199ce48e5aSMichal Kubecek (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 32209ce48e5aSMichal Kubecek match->mask.vlan.vlan_priority = 32219ce48e5aSMichal Kubecek (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 32229ce48e5aSMichal Kubecek } 32239ce48e5aSMichal Kubecek 32249ce48e5aSMichal Kubecek if (ext_m_spec->vlan_etype || 32259ce48e5aSMichal Kubecek ext_m_spec->vlan_tci) { 32269ce48e5aSMichal Kubecek match->dissector.used_keys |= 32279ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_VLAN); 32289ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 32299ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, vlan); 32309ce48e5aSMichal Kubecek } 32319ce48e5aSMichal Kubecek } 32329ce48e5aSMichal Kubecek if (fs->flow_type & FLOW_MAC_EXT) { 32339ce48e5aSMichal Kubecek const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 32349ce48e5aSMichal Kubecek const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 32359ce48e5aSMichal Kubecek 32369ce48e5aSMichal Kubecek memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 32379ce48e5aSMichal Kubecek ETH_ALEN); 32389ce48e5aSMichal Kubecek memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 32399ce48e5aSMichal Kubecek ETH_ALEN); 32409ce48e5aSMichal Kubecek 32419ce48e5aSMichal Kubecek match->dissector.used_keys |= 32429ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS); 32439ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 32449ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, eth_addrs); 32459ce48e5aSMichal Kubecek } 32469ce48e5aSMichal Kubecek 32479ce48e5aSMichal Kubecek act = &flow->rule->action.entries[0]; 32489ce48e5aSMichal Kubecek switch (fs->ring_cookie) { 32499ce48e5aSMichal Kubecek case RX_CLS_FLOW_DISC: 32509ce48e5aSMichal Kubecek act->id = FLOW_ACTION_DROP; 32519ce48e5aSMichal Kubecek break; 32529ce48e5aSMichal Kubecek case RX_CLS_FLOW_WAKE: 32539ce48e5aSMichal Kubecek act->id = FLOW_ACTION_WAKE; 32549ce48e5aSMichal Kubecek break; 32559ce48e5aSMichal Kubecek default: 32569ce48e5aSMichal Kubecek act->id = FLOW_ACTION_QUEUE; 32579ce48e5aSMichal Kubecek if (fs->flow_type & FLOW_RSS) 32589ce48e5aSMichal Kubecek act->queue.ctx = input->rss_ctx; 32599ce48e5aSMichal Kubecek 32609ce48e5aSMichal Kubecek act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 32619ce48e5aSMichal Kubecek act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 32629ce48e5aSMichal Kubecek break; 32639ce48e5aSMichal Kubecek } 32649ce48e5aSMichal Kubecek 32659ce48e5aSMichal Kubecek return flow; 32669ce48e5aSMichal Kubecek } 32679ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 32689ce48e5aSMichal Kubecek 32699ce48e5aSMichal Kubecek void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 32709ce48e5aSMichal Kubecek { 32719ce48e5aSMichal Kubecek kfree(flow->rule); 32729ce48e5aSMichal Kubecek kfree(flow); 32739ce48e5aSMichal Kubecek } 32749ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3275