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 109ce48e5aSMichal Kubecek #include <linux/module.h> 119ce48e5aSMichal Kubecek #include <linux/types.h> 129ce48e5aSMichal Kubecek #include <linux/capability.h> 139ce48e5aSMichal Kubecek #include <linux/errno.h> 149ce48e5aSMichal Kubecek #include <linux/ethtool.h> 159ce48e5aSMichal Kubecek #include <linux/netdevice.h> 169ce48e5aSMichal Kubecek #include <linux/net_tstamp.h> 179ce48e5aSMichal Kubecek #include <linux/phy.h> 189ce48e5aSMichal Kubecek #include <linux/bitops.h> 199ce48e5aSMichal Kubecek #include <linux/uaccess.h> 20*6a7e25c7SLeon Romanovsky #include <linux/vermagic.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> 279ce48e5aSMichal Kubecek #include <net/devlink.h> 289ce48e5aSMichal Kubecek #include <net/xdp_sock.h> 299ce48e5aSMichal Kubecek #include <net/flow_offload.h> 3073286734SMichal Kubecek #include <linux/ethtool_netlink.h> 319ce48e5aSMichal Kubecek 32d44e1310SMichal Kubecek #include "common.h" 33d44e1310SMichal Kubecek 349ce48e5aSMichal Kubecek /* 359ce48e5aSMichal Kubecek * Some useful ethtool_ops methods that're device independent. 369ce48e5aSMichal Kubecek * If we find that all drivers want to do the same thing here, 379ce48e5aSMichal Kubecek * we can turn these into dev_() function calls. 389ce48e5aSMichal Kubecek */ 399ce48e5aSMichal Kubecek 409ce48e5aSMichal Kubecek u32 ethtool_op_get_link(struct net_device *dev) 419ce48e5aSMichal Kubecek { 429ce48e5aSMichal Kubecek return netif_carrier_ok(dev) ? 1 : 0; 439ce48e5aSMichal Kubecek } 449ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_op_get_link); 459ce48e5aSMichal Kubecek 469ce48e5aSMichal Kubecek int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) 479ce48e5aSMichal Kubecek { 489ce48e5aSMichal Kubecek info->so_timestamping = 499ce48e5aSMichal Kubecek SOF_TIMESTAMPING_TX_SOFTWARE | 509ce48e5aSMichal Kubecek SOF_TIMESTAMPING_RX_SOFTWARE | 519ce48e5aSMichal Kubecek SOF_TIMESTAMPING_SOFTWARE; 529ce48e5aSMichal Kubecek info->phc_index = -1; 539ce48e5aSMichal Kubecek return 0; 549ce48e5aSMichal Kubecek } 559ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_op_get_ts_info); 569ce48e5aSMichal Kubecek 579ce48e5aSMichal Kubecek /* Handlers for each ethtool command */ 589ce48e5aSMichal Kubecek 599ce48e5aSMichal Kubecek #define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32) 609ce48e5aSMichal Kubecek 619ce48e5aSMichal Kubecek static int ethtool_get_features(struct net_device *dev, void __user *useraddr) 629ce48e5aSMichal Kubecek { 639ce48e5aSMichal Kubecek struct ethtool_gfeatures cmd = { 649ce48e5aSMichal Kubecek .cmd = ETHTOOL_GFEATURES, 659ce48e5aSMichal Kubecek .size = ETHTOOL_DEV_FEATURE_WORDS, 669ce48e5aSMichal Kubecek }; 679ce48e5aSMichal Kubecek struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; 689ce48e5aSMichal Kubecek u32 __user *sizeaddr; 699ce48e5aSMichal Kubecek u32 copy_size; 709ce48e5aSMichal Kubecek int i; 719ce48e5aSMichal Kubecek 729ce48e5aSMichal Kubecek /* in case feature bits run out again */ 739ce48e5aSMichal Kubecek BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); 749ce48e5aSMichal Kubecek 759ce48e5aSMichal Kubecek for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { 769ce48e5aSMichal Kubecek features[i].available = (u32)(dev->hw_features >> (32 * i)); 779ce48e5aSMichal Kubecek features[i].requested = (u32)(dev->wanted_features >> (32 * i)); 789ce48e5aSMichal Kubecek features[i].active = (u32)(dev->features >> (32 * i)); 799ce48e5aSMichal Kubecek features[i].never_changed = 809ce48e5aSMichal Kubecek (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); 819ce48e5aSMichal Kubecek } 829ce48e5aSMichal Kubecek 839ce48e5aSMichal Kubecek sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); 849ce48e5aSMichal Kubecek if (get_user(copy_size, sizeaddr)) 859ce48e5aSMichal Kubecek return -EFAULT; 869ce48e5aSMichal Kubecek 879ce48e5aSMichal Kubecek if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) 889ce48e5aSMichal Kubecek copy_size = ETHTOOL_DEV_FEATURE_WORDS; 899ce48e5aSMichal Kubecek 909ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 919ce48e5aSMichal Kubecek return -EFAULT; 929ce48e5aSMichal Kubecek useraddr += sizeof(cmd); 939ce48e5aSMichal Kubecek if (copy_to_user(useraddr, features, 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 { 1419ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 1429ce48e5aSMichal Kubecek 1439ce48e5aSMichal Kubecek if (sset == ETH_SS_FEATURES) 1449ce48e5aSMichal Kubecek return ARRAY_SIZE(netdev_features_strings); 1459ce48e5aSMichal Kubecek 1469ce48e5aSMichal Kubecek if (sset == ETH_SS_RSS_HASH_FUNCS) 1479ce48e5aSMichal Kubecek return ARRAY_SIZE(rss_hash_func_strings); 1489ce48e5aSMichal Kubecek 1499ce48e5aSMichal Kubecek if (sset == ETH_SS_TUNABLES) 1509ce48e5aSMichal Kubecek return ARRAY_SIZE(tunable_strings); 1519ce48e5aSMichal Kubecek 1529ce48e5aSMichal Kubecek if (sset == ETH_SS_PHY_TUNABLES) 1539ce48e5aSMichal Kubecek return ARRAY_SIZE(phy_tunable_strings); 1549ce48e5aSMichal Kubecek 1559ce48e5aSMichal Kubecek if (sset == ETH_SS_PHY_STATS && dev->phydev && 1569ce48e5aSMichal Kubecek !ops->get_ethtool_phy_stats) 1579ce48e5aSMichal Kubecek return phy_ethtool_get_sset_count(dev->phydev); 1589ce48e5aSMichal Kubecek 159428c122fSMichal Kubecek if (sset == ETH_SS_LINK_MODES) 160428c122fSMichal Kubecek return __ETHTOOL_LINK_MODE_MASK_NBITS; 161428c122fSMichal Kubecek 1629ce48e5aSMichal Kubecek if (ops->get_sset_count && ops->get_strings) 1639ce48e5aSMichal Kubecek return ops->get_sset_count(dev, sset); 1649ce48e5aSMichal Kubecek else 1659ce48e5aSMichal Kubecek return -EOPNOTSUPP; 1669ce48e5aSMichal Kubecek } 1679ce48e5aSMichal Kubecek 1689ce48e5aSMichal Kubecek static void __ethtool_get_strings(struct net_device *dev, 1699ce48e5aSMichal Kubecek u32 stringset, u8 *data) 1709ce48e5aSMichal Kubecek { 1719ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 1729ce48e5aSMichal Kubecek 1739ce48e5aSMichal Kubecek if (stringset == ETH_SS_FEATURES) 1749ce48e5aSMichal Kubecek memcpy(data, netdev_features_strings, 1759ce48e5aSMichal Kubecek sizeof(netdev_features_strings)); 1769ce48e5aSMichal Kubecek else if (stringset == ETH_SS_RSS_HASH_FUNCS) 1779ce48e5aSMichal Kubecek memcpy(data, rss_hash_func_strings, 1789ce48e5aSMichal Kubecek sizeof(rss_hash_func_strings)); 1799ce48e5aSMichal Kubecek else if (stringset == ETH_SS_TUNABLES) 1809ce48e5aSMichal Kubecek memcpy(data, tunable_strings, sizeof(tunable_strings)); 1819ce48e5aSMichal Kubecek else if (stringset == ETH_SS_PHY_TUNABLES) 1829ce48e5aSMichal Kubecek memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); 1839ce48e5aSMichal Kubecek else if (stringset == ETH_SS_PHY_STATS && dev->phydev && 1849ce48e5aSMichal Kubecek !ops->get_ethtool_phy_stats) 1859ce48e5aSMichal Kubecek phy_ethtool_get_strings(dev->phydev, data); 186428c122fSMichal Kubecek else if (stringset == ETH_SS_LINK_MODES) 187428c122fSMichal Kubecek memcpy(data, link_mode_names, 188428c122fSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); 1899ce48e5aSMichal Kubecek else 1909ce48e5aSMichal Kubecek /* ops->get_strings is valid because checked earlier */ 1919ce48e5aSMichal Kubecek ops->get_strings(dev, stringset, data); 1929ce48e5aSMichal Kubecek } 1939ce48e5aSMichal Kubecek 1949ce48e5aSMichal Kubecek static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) 1959ce48e5aSMichal Kubecek { 1969ce48e5aSMichal Kubecek /* feature masks of legacy discrete ethtool ops */ 1979ce48e5aSMichal Kubecek 1989ce48e5aSMichal Kubecek switch (eth_cmd) { 1999ce48e5aSMichal Kubecek case ETHTOOL_GTXCSUM: 2009ce48e5aSMichal Kubecek case ETHTOOL_STXCSUM: 2019ce48e5aSMichal Kubecek return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC; 2029ce48e5aSMichal Kubecek case ETHTOOL_GRXCSUM: 2039ce48e5aSMichal Kubecek case ETHTOOL_SRXCSUM: 2049ce48e5aSMichal Kubecek return NETIF_F_RXCSUM; 2059ce48e5aSMichal Kubecek case ETHTOOL_GSG: 2069ce48e5aSMichal Kubecek case ETHTOOL_SSG: 2079ce48e5aSMichal Kubecek return NETIF_F_SG; 2089ce48e5aSMichal Kubecek case ETHTOOL_GTSO: 2099ce48e5aSMichal Kubecek case ETHTOOL_STSO: 2109ce48e5aSMichal Kubecek return NETIF_F_ALL_TSO; 2119ce48e5aSMichal Kubecek case ETHTOOL_GGSO: 2129ce48e5aSMichal Kubecek case ETHTOOL_SGSO: 2139ce48e5aSMichal Kubecek return NETIF_F_GSO; 2149ce48e5aSMichal Kubecek case ETHTOOL_GGRO: 2159ce48e5aSMichal Kubecek case ETHTOOL_SGRO: 2169ce48e5aSMichal Kubecek return NETIF_F_GRO; 2179ce48e5aSMichal Kubecek default: 2189ce48e5aSMichal Kubecek BUG(); 2199ce48e5aSMichal Kubecek } 2209ce48e5aSMichal Kubecek } 2219ce48e5aSMichal Kubecek 2229ce48e5aSMichal Kubecek static int ethtool_get_one_feature(struct net_device *dev, 2239ce48e5aSMichal Kubecek char __user *useraddr, u32 ethcmd) 2249ce48e5aSMichal Kubecek { 2259ce48e5aSMichal Kubecek netdev_features_t mask = ethtool_get_feature_mask(ethcmd); 2269ce48e5aSMichal Kubecek struct ethtool_value edata = { 2279ce48e5aSMichal Kubecek .cmd = ethcmd, 2289ce48e5aSMichal Kubecek .data = !!(dev->features & mask), 2299ce48e5aSMichal Kubecek }; 2309ce48e5aSMichal Kubecek 2319ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &edata, sizeof(edata))) 2329ce48e5aSMichal Kubecek return -EFAULT; 2339ce48e5aSMichal Kubecek return 0; 2349ce48e5aSMichal Kubecek } 2359ce48e5aSMichal Kubecek 2369ce48e5aSMichal Kubecek static int ethtool_set_one_feature(struct net_device *dev, 2379ce48e5aSMichal Kubecek void __user *useraddr, u32 ethcmd) 2389ce48e5aSMichal Kubecek { 2399ce48e5aSMichal Kubecek struct ethtool_value edata; 2409ce48e5aSMichal Kubecek netdev_features_t mask; 2419ce48e5aSMichal Kubecek 2429ce48e5aSMichal Kubecek if (copy_from_user(&edata, useraddr, sizeof(edata))) 2439ce48e5aSMichal Kubecek return -EFAULT; 2449ce48e5aSMichal Kubecek 2459ce48e5aSMichal Kubecek mask = ethtool_get_feature_mask(ethcmd); 2469ce48e5aSMichal Kubecek mask &= dev->hw_features; 2479ce48e5aSMichal Kubecek if (!mask) 2489ce48e5aSMichal Kubecek return -EOPNOTSUPP; 2499ce48e5aSMichal Kubecek 2509ce48e5aSMichal Kubecek if (edata.data) 2519ce48e5aSMichal Kubecek dev->wanted_features |= mask; 2529ce48e5aSMichal Kubecek else 2539ce48e5aSMichal Kubecek dev->wanted_features &= ~mask; 2549ce48e5aSMichal Kubecek 2559ce48e5aSMichal Kubecek __netdev_update_features(dev); 2569ce48e5aSMichal Kubecek 2579ce48e5aSMichal Kubecek return 0; 2589ce48e5aSMichal Kubecek } 2599ce48e5aSMichal Kubecek 2609ce48e5aSMichal Kubecek #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ 2619ce48e5aSMichal Kubecek ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) 2629ce48e5aSMichal Kubecek #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ 2639ce48e5aSMichal Kubecek NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ 2649ce48e5aSMichal Kubecek NETIF_F_RXHASH) 2659ce48e5aSMichal Kubecek 2669ce48e5aSMichal Kubecek static u32 __ethtool_get_flags(struct net_device *dev) 2679ce48e5aSMichal Kubecek { 2689ce48e5aSMichal Kubecek u32 flags = 0; 2699ce48e5aSMichal Kubecek 2709ce48e5aSMichal Kubecek if (dev->features & NETIF_F_LRO) 2719ce48e5aSMichal Kubecek flags |= ETH_FLAG_LRO; 2729ce48e5aSMichal Kubecek if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) 2739ce48e5aSMichal Kubecek flags |= ETH_FLAG_RXVLAN; 2749ce48e5aSMichal Kubecek if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) 2759ce48e5aSMichal Kubecek flags |= ETH_FLAG_TXVLAN; 2769ce48e5aSMichal Kubecek if (dev->features & NETIF_F_NTUPLE) 2779ce48e5aSMichal Kubecek flags |= ETH_FLAG_NTUPLE; 2789ce48e5aSMichal Kubecek if (dev->features & NETIF_F_RXHASH) 2799ce48e5aSMichal Kubecek flags |= ETH_FLAG_RXHASH; 2809ce48e5aSMichal Kubecek 2819ce48e5aSMichal Kubecek return flags; 2829ce48e5aSMichal Kubecek } 2839ce48e5aSMichal Kubecek 2849ce48e5aSMichal Kubecek static int __ethtool_set_flags(struct net_device *dev, u32 data) 2859ce48e5aSMichal Kubecek { 2869ce48e5aSMichal Kubecek netdev_features_t features = 0, changed; 2879ce48e5aSMichal Kubecek 2889ce48e5aSMichal Kubecek if (data & ~ETH_ALL_FLAGS) 2899ce48e5aSMichal Kubecek return -EINVAL; 2909ce48e5aSMichal Kubecek 2919ce48e5aSMichal Kubecek if (data & ETH_FLAG_LRO) 2929ce48e5aSMichal Kubecek features |= NETIF_F_LRO; 2939ce48e5aSMichal Kubecek if (data & ETH_FLAG_RXVLAN) 2949ce48e5aSMichal Kubecek features |= NETIF_F_HW_VLAN_CTAG_RX; 2959ce48e5aSMichal Kubecek if (data & ETH_FLAG_TXVLAN) 2969ce48e5aSMichal Kubecek features |= NETIF_F_HW_VLAN_CTAG_TX; 2979ce48e5aSMichal Kubecek if (data & ETH_FLAG_NTUPLE) 2989ce48e5aSMichal Kubecek features |= NETIF_F_NTUPLE; 2999ce48e5aSMichal Kubecek if (data & ETH_FLAG_RXHASH) 3009ce48e5aSMichal Kubecek features |= NETIF_F_RXHASH; 3019ce48e5aSMichal Kubecek 3029ce48e5aSMichal Kubecek /* allow changing only bits set in hw_features */ 3039ce48e5aSMichal Kubecek changed = (features ^ dev->features) & ETH_ALL_FEATURES; 3049ce48e5aSMichal Kubecek if (changed & ~dev->hw_features) 3059ce48e5aSMichal Kubecek return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; 3069ce48e5aSMichal Kubecek 3079ce48e5aSMichal Kubecek dev->wanted_features = 3089ce48e5aSMichal Kubecek (dev->wanted_features & ~changed) | (features & changed); 3099ce48e5aSMichal Kubecek 3109ce48e5aSMichal Kubecek __netdev_update_features(dev); 3119ce48e5aSMichal Kubecek 3129ce48e5aSMichal Kubecek return 0; 3139ce48e5aSMichal Kubecek } 3149ce48e5aSMichal Kubecek 3159ce48e5aSMichal Kubecek /* Given two link masks, AND them together and save the result in dst. */ 3169ce48e5aSMichal Kubecek void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, 3179ce48e5aSMichal Kubecek struct ethtool_link_ksettings *src) 3189ce48e5aSMichal Kubecek { 3199ce48e5aSMichal Kubecek unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); 3209ce48e5aSMichal Kubecek unsigned int idx = 0; 3219ce48e5aSMichal Kubecek 3229ce48e5aSMichal Kubecek for (; idx < size; idx++) { 3239ce48e5aSMichal Kubecek dst->link_modes.supported[idx] &= 3249ce48e5aSMichal Kubecek src->link_modes.supported[idx]; 3259ce48e5aSMichal Kubecek dst->link_modes.advertising[idx] &= 3269ce48e5aSMichal Kubecek src->link_modes.advertising[idx]; 3279ce48e5aSMichal Kubecek } 3289ce48e5aSMichal Kubecek } 3299ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_intersect_link_masks); 3309ce48e5aSMichal Kubecek 3319ce48e5aSMichal Kubecek void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, 3329ce48e5aSMichal Kubecek u32 legacy_u32) 3339ce48e5aSMichal Kubecek { 3349ce48e5aSMichal Kubecek bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS); 3359ce48e5aSMichal Kubecek dst[0] = legacy_u32; 3369ce48e5aSMichal Kubecek } 3379ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); 3389ce48e5aSMichal Kubecek 3399ce48e5aSMichal Kubecek /* return false if src had higher bits set. lower bits always updated. */ 3409ce48e5aSMichal Kubecek bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, 3419ce48e5aSMichal Kubecek const unsigned long *src) 3429ce48e5aSMichal Kubecek { 3439ce48e5aSMichal Kubecek bool retval = true; 3449ce48e5aSMichal Kubecek 3459ce48e5aSMichal Kubecek /* TODO: following test will soon always be true */ 3469ce48e5aSMichal Kubecek if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) { 3479ce48e5aSMichal Kubecek __ETHTOOL_DECLARE_LINK_MODE_MASK(ext); 3489ce48e5aSMichal Kubecek 3499ce48e5aSMichal Kubecek bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS); 3509ce48e5aSMichal Kubecek bitmap_fill(ext, 32); 3519ce48e5aSMichal Kubecek bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS); 3529ce48e5aSMichal Kubecek if (bitmap_intersects(ext, src, 3539ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS)) { 3549ce48e5aSMichal Kubecek /* src mask goes beyond bit 31 */ 3559ce48e5aSMichal Kubecek retval = false; 3569ce48e5aSMichal Kubecek } 3579ce48e5aSMichal Kubecek } 3589ce48e5aSMichal Kubecek *legacy_u32 = src[0]; 3599ce48e5aSMichal Kubecek return retval; 3609ce48e5aSMichal Kubecek } 3619ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); 3629ce48e5aSMichal Kubecek 3639ce48e5aSMichal Kubecek /* return false if ksettings link modes had higher bits 3649ce48e5aSMichal Kubecek * set. legacy_settings always updated (best effort) 3659ce48e5aSMichal Kubecek */ 3669ce48e5aSMichal Kubecek static bool 3679ce48e5aSMichal Kubecek convert_link_ksettings_to_legacy_settings( 3689ce48e5aSMichal Kubecek struct ethtool_cmd *legacy_settings, 3699ce48e5aSMichal Kubecek const struct ethtool_link_ksettings *link_ksettings) 3709ce48e5aSMichal Kubecek { 3719ce48e5aSMichal Kubecek bool retval = true; 3729ce48e5aSMichal Kubecek 3739ce48e5aSMichal Kubecek memset(legacy_settings, 0, sizeof(*legacy_settings)); 3749ce48e5aSMichal Kubecek /* this also clears the deprecated fields in legacy structure: 3759ce48e5aSMichal Kubecek * __u8 transceiver; 3769ce48e5aSMichal Kubecek * __u32 maxtxpkt; 3779ce48e5aSMichal Kubecek * __u32 maxrxpkt; 3789ce48e5aSMichal Kubecek */ 3799ce48e5aSMichal Kubecek 3809ce48e5aSMichal Kubecek retval &= ethtool_convert_link_mode_to_legacy_u32( 3819ce48e5aSMichal Kubecek &legacy_settings->supported, 3829ce48e5aSMichal Kubecek link_ksettings->link_modes.supported); 3839ce48e5aSMichal Kubecek retval &= ethtool_convert_link_mode_to_legacy_u32( 3849ce48e5aSMichal Kubecek &legacy_settings->advertising, 3859ce48e5aSMichal Kubecek link_ksettings->link_modes.advertising); 3869ce48e5aSMichal Kubecek retval &= ethtool_convert_link_mode_to_legacy_u32( 3879ce48e5aSMichal Kubecek &legacy_settings->lp_advertising, 3889ce48e5aSMichal Kubecek link_ksettings->link_modes.lp_advertising); 3899ce48e5aSMichal Kubecek ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); 3909ce48e5aSMichal Kubecek legacy_settings->duplex 3919ce48e5aSMichal Kubecek = link_ksettings->base.duplex; 3929ce48e5aSMichal Kubecek legacy_settings->port 3939ce48e5aSMichal Kubecek = link_ksettings->base.port; 3949ce48e5aSMichal Kubecek legacy_settings->phy_address 3959ce48e5aSMichal Kubecek = link_ksettings->base.phy_address; 3969ce48e5aSMichal Kubecek legacy_settings->autoneg 3979ce48e5aSMichal Kubecek = link_ksettings->base.autoneg; 3989ce48e5aSMichal Kubecek legacy_settings->mdio_support 3999ce48e5aSMichal Kubecek = link_ksettings->base.mdio_support; 4009ce48e5aSMichal Kubecek legacy_settings->eth_tp_mdix 4019ce48e5aSMichal Kubecek = link_ksettings->base.eth_tp_mdix; 4029ce48e5aSMichal Kubecek legacy_settings->eth_tp_mdix_ctrl 4039ce48e5aSMichal Kubecek = link_ksettings->base.eth_tp_mdix_ctrl; 4049ce48e5aSMichal Kubecek legacy_settings->transceiver 4059ce48e5aSMichal Kubecek = link_ksettings->base.transceiver; 4069ce48e5aSMichal Kubecek return retval; 4079ce48e5aSMichal Kubecek } 4089ce48e5aSMichal Kubecek 4099ce48e5aSMichal Kubecek /* number of 32-bit words to store the user's link mode bitmaps */ 4109ce48e5aSMichal Kubecek #define __ETHTOOL_LINK_MODE_MASK_NU32 \ 4119ce48e5aSMichal Kubecek DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) 4129ce48e5aSMichal Kubecek 4139ce48e5aSMichal Kubecek /* layout of the struct passed from/to userland */ 4149ce48e5aSMichal Kubecek struct ethtool_link_usettings { 4159ce48e5aSMichal Kubecek struct ethtool_link_settings base; 4169ce48e5aSMichal Kubecek struct { 4179ce48e5aSMichal Kubecek __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; 4189ce48e5aSMichal Kubecek __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 4199ce48e5aSMichal Kubecek __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; 4209ce48e5aSMichal Kubecek } link_modes; 4219ce48e5aSMichal Kubecek }; 4229ce48e5aSMichal Kubecek 4239ce48e5aSMichal Kubecek /* Internal kernel helper to query a device ethtool_link_settings. */ 4249ce48e5aSMichal Kubecek int __ethtool_get_link_ksettings(struct net_device *dev, 4259ce48e5aSMichal Kubecek struct ethtool_link_ksettings *link_ksettings) 4269ce48e5aSMichal Kubecek { 4279ce48e5aSMichal Kubecek ASSERT_RTNL(); 4289ce48e5aSMichal Kubecek 4299ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_link_ksettings) 4309ce48e5aSMichal Kubecek return -EOPNOTSUPP; 4319ce48e5aSMichal Kubecek 4329ce48e5aSMichal Kubecek memset(link_ksettings, 0, sizeof(*link_ksettings)); 4339ce48e5aSMichal Kubecek return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); 4349ce48e5aSMichal Kubecek } 4359ce48e5aSMichal Kubecek EXPORT_SYMBOL(__ethtool_get_link_ksettings); 4369ce48e5aSMichal Kubecek 4379ce48e5aSMichal Kubecek /* convert ethtool_link_usettings in user space to a kernel internal 4389ce48e5aSMichal Kubecek * ethtool_link_ksettings. return 0 on success, errno on error. 4399ce48e5aSMichal Kubecek */ 4409ce48e5aSMichal Kubecek static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, 4419ce48e5aSMichal Kubecek const void __user *from) 4429ce48e5aSMichal Kubecek { 4439ce48e5aSMichal Kubecek struct ethtool_link_usettings link_usettings; 4449ce48e5aSMichal Kubecek 4459ce48e5aSMichal Kubecek if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) 4469ce48e5aSMichal Kubecek return -EFAULT; 4479ce48e5aSMichal Kubecek 4489ce48e5aSMichal Kubecek memcpy(&to->base, &link_usettings.base, sizeof(to->base)); 4499ce48e5aSMichal Kubecek bitmap_from_arr32(to->link_modes.supported, 4509ce48e5aSMichal Kubecek link_usettings.link_modes.supported, 4519ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS); 4529ce48e5aSMichal Kubecek bitmap_from_arr32(to->link_modes.advertising, 4539ce48e5aSMichal Kubecek link_usettings.link_modes.advertising, 4549ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS); 4559ce48e5aSMichal Kubecek bitmap_from_arr32(to->link_modes.lp_advertising, 4569ce48e5aSMichal Kubecek link_usettings.link_modes.lp_advertising, 4579ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS); 4589ce48e5aSMichal Kubecek 4599ce48e5aSMichal Kubecek return 0; 4609ce48e5aSMichal Kubecek } 4619ce48e5aSMichal Kubecek 4629ce48e5aSMichal Kubecek /* convert a kernel internal ethtool_link_ksettings to 4639ce48e5aSMichal Kubecek * ethtool_link_usettings in user space. return 0 on success, errno on 4649ce48e5aSMichal Kubecek * error. 4659ce48e5aSMichal Kubecek */ 4669ce48e5aSMichal Kubecek static int 4679ce48e5aSMichal Kubecek store_link_ksettings_for_user(void __user *to, 4689ce48e5aSMichal Kubecek const struct ethtool_link_ksettings *from) 4699ce48e5aSMichal Kubecek { 4709ce48e5aSMichal Kubecek struct ethtool_link_usettings link_usettings; 4719ce48e5aSMichal Kubecek 4729ce48e5aSMichal Kubecek memcpy(&link_usettings.base, &from->base, sizeof(link_usettings)); 4739ce48e5aSMichal Kubecek bitmap_to_arr32(link_usettings.link_modes.supported, 4749ce48e5aSMichal Kubecek from->link_modes.supported, 4759ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS); 4769ce48e5aSMichal Kubecek bitmap_to_arr32(link_usettings.link_modes.advertising, 4779ce48e5aSMichal Kubecek from->link_modes.advertising, 4789ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS); 4799ce48e5aSMichal Kubecek bitmap_to_arr32(link_usettings.link_modes.lp_advertising, 4809ce48e5aSMichal Kubecek from->link_modes.lp_advertising, 4819ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NBITS); 4829ce48e5aSMichal Kubecek 4839ce48e5aSMichal Kubecek if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) 4849ce48e5aSMichal Kubecek return -EFAULT; 4859ce48e5aSMichal Kubecek 4869ce48e5aSMichal Kubecek return 0; 4879ce48e5aSMichal Kubecek } 4889ce48e5aSMichal Kubecek 4899ce48e5aSMichal Kubecek /* Query device for its ethtool_link_settings. */ 4909ce48e5aSMichal Kubecek static int ethtool_get_link_ksettings(struct net_device *dev, 4919ce48e5aSMichal Kubecek void __user *useraddr) 4929ce48e5aSMichal Kubecek { 4939ce48e5aSMichal Kubecek int err = 0; 4949ce48e5aSMichal Kubecek struct ethtool_link_ksettings link_ksettings; 4959ce48e5aSMichal Kubecek 4969ce48e5aSMichal Kubecek ASSERT_RTNL(); 4979ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_link_ksettings) 4989ce48e5aSMichal Kubecek return -EOPNOTSUPP; 4999ce48e5aSMichal Kubecek 5009ce48e5aSMichal Kubecek /* handle bitmap nbits handshake */ 5019ce48e5aSMichal Kubecek if (copy_from_user(&link_ksettings.base, useraddr, 5029ce48e5aSMichal Kubecek sizeof(link_ksettings.base))) 5039ce48e5aSMichal Kubecek return -EFAULT; 5049ce48e5aSMichal Kubecek 5059ce48e5aSMichal Kubecek if (__ETHTOOL_LINK_MODE_MASK_NU32 5069ce48e5aSMichal Kubecek != link_ksettings.base.link_mode_masks_nwords) { 5079ce48e5aSMichal Kubecek /* wrong link mode nbits requested */ 5089ce48e5aSMichal Kubecek memset(&link_ksettings, 0, sizeof(link_ksettings)); 5099ce48e5aSMichal Kubecek link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 5109ce48e5aSMichal Kubecek /* send back number of words required as negative val */ 5119ce48e5aSMichal Kubecek compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, 5129ce48e5aSMichal Kubecek "need too many bits for link modes!"); 5139ce48e5aSMichal Kubecek link_ksettings.base.link_mode_masks_nwords 5149ce48e5aSMichal Kubecek = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); 5159ce48e5aSMichal Kubecek 5169ce48e5aSMichal Kubecek /* copy the base fields back to user, not the link 5179ce48e5aSMichal Kubecek * mode bitmaps 5189ce48e5aSMichal Kubecek */ 5199ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &link_ksettings.base, 5209ce48e5aSMichal Kubecek sizeof(link_ksettings.base))) 5219ce48e5aSMichal Kubecek return -EFAULT; 5229ce48e5aSMichal Kubecek 5239ce48e5aSMichal Kubecek return 0; 5249ce48e5aSMichal Kubecek } 5259ce48e5aSMichal Kubecek 5269ce48e5aSMichal Kubecek /* handshake successful: user/kernel agree on 5279ce48e5aSMichal Kubecek * link_mode_masks_nwords 5289ce48e5aSMichal Kubecek */ 5299ce48e5aSMichal Kubecek 5309ce48e5aSMichal Kubecek memset(&link_ksettings, 0, sizeof(link_ksettings)); 5319ce48e5aSMichal Kubecek err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 5329ce48e5aSMichal Kubecek if (err < 0) 5339ce48e5aSMichal Kubecek return err; 5349ce48e5aSMichal Kubecek 5359ce48e5aSMichal Kubecek /* make sure we tell the right values to user */ 5369ce48e5aSMichal Kubecek link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; 5379ce48e5aSMichal Kubecek link_ksettings.base.link_mode_masks_nwords 5389ce48e5aSMichal Kubecek = __ETHTOOL_LINK_MODE_MASK_NU32; 5399ce48e5aSMichal Kubecek 5409ce48e5aSMichal Kubecek return store_link_ksettings_for_user(useraddr, &link_ksettings); 5419ce48e5aSMichal Kubecek } 5429ce48e5aSMichal Kubecek 5439ce48e5aSMichal Kubecek /* Update device ethtool_link_settings. */ 5449ce48e5aSMichal Kubecek static int ethtool_set_link_ksettings(struct net_device *dev, 5459ce48e5aSMichal Kubecek void __user *useraddr) 5469ce48e5aSMichal Kubecek { 5479ce48e5aSMichal Kubecek int err; 5489ce48e5aSMichal Kubecek struct ethtool_link_ksettings link_ksettings; 5499ce48e5aSMichal Kubecek 5509ce48e5aSMichal Kubecek ASSERT_RTNL(); 5519ce48e5aSMichal Kubecek 5529ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_link_ksettings) 5539ce48e5aSMichal Kubecek return -EOPNOTSUPP; 5549ce48e5aSMichal Kubecek 5559ce48e5aSMichal Kubecek /* make sure nbits field has expected value */ 5569ce48e5aSMichal Kubecek if (copy_from_user(&link_ksettings.base, useraddr, 5579ce48e5aSMichal Kubecek sizeof(link_ksettings.base))) 5589ce48e5aSMichal Kubecek return -EFAULT; 5599ce48e5aSMichal Kubecek 5609ce48e5aSMichal Kubecek if (__ETHTOOL_LINK_MODE_MASK_NU32 5619ce48e5aSMichal Kubecek != link_ksettings.base.link_mode_masks_nwords) 5629ce48e5aSMichal Kubecek return -EINVAL; 5639ce48e5aSMichal Kubecek 5649ce48e5aSMichal Kubecek /* copy the whole structure, now that we know it has expected 5659ce48e5aSMichal Kubecek * format 5669ce48e5aSMichal Kubecek */ 5679ce48e5aSMichal Kubecek err = load_link_ksettings_from_user(&link_ksettings, useraddr); 5689ce48e5aSMichal Kubecek if (err) 5699ce48e5aSMichal Kubecek return err; 5709ce48e5aSMichal Kubecek 5719ce48e5aSMichal Kubecek /* re-check nwords field, just in case */ 5729ce48e5aSMichal Kubecek if (__ETHTOOL_LINK_MODE_MASK_NU32 5739ce48e5aSMichal Kubecek != link_ksettings.base.link_mode_masks_nwords) 5749ce48e5aSMichal Kubecek return -EINVAL; 5759ce48e5aSMichal Kubecek 57673286734SMichal Kubecek err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 5771b1b1847SMichal Kubecek if (err >= 0) { 57873286734SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 5791b1b1847SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 5801b1b1847SMichal Kubecek } 58173286734SMichal Kubecek return err; 5829ce48e5aSMichal Kubecek } 5839ce48e5aSMichal Kubecek 5849ce48e5aSMichal Kubecek /* Query device for its ethtool_cmd settings. 5859ce48e5aSMichal Kubecek * 5869ce48e5aSMichal Kubecek * Backward compatibility note: for compatibility with legacy ethtool, this is 5879ce48e5aSMichal Kubecek * now implemented via get_link_ksettings. When driver reports higher link mode 5889ce48e5aSMichal Kubecek * bits, a kernel warning is logged once (with name of 1st driver/device) to 5899ce48e5aSMichal Kubecek * recommend user to upgrade ethtool, but the command is successful (only the 5909ce48e5aSMichal Kubecek * lower link mode bits reported back to user). Deprecated fields from 5919ce48e5aSMichal Kubecek * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. 5929ce48e5aSMichal Kubecek */ 5939ce48e5aSMichal Kubecek static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) 5949ce48e5aSMichal Kubecek { 5959ce48e5aSMichal Kubecek struct ethtool_link_ksettings link_ksettings; 5969ce48e5aSMichal Kubecek struct ethtool_cmd cmd; 5979ce48e5aSMichal Kubecek int err; 5989ce48e5aSMichal Kubecek 5999ce48e5aSMichal Kubecek ASSERT_RTNL(); 6009ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_link_ksettings) 6019ce48e5aSMichal Kubecek return -EOPNOTSUPP; 6029ce48e5aSMichal Kubecek 6039ce48e5aSMichal Kubecek memset(&link_ksettings, 0, sizeof(link_ksettings)); 6049ce48e5aSMichal Kubecek err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); 6059ce48e5aSMichal Kubecek if (err < 0) 6069ce48e5aSMichal Kubecek return err; 6079ce48e5aSMichal Kubecek convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); 6089ce48e5aSMichal Kubecek 6099ce48e5aSMichal Kubecek /* send a sensible cmd tag back to user */ 6109ce48e5aSMichal Kubecek cmd.cmd = ETHTOOL_GSET; 6119ce48e5aSMichal Kubecek 6129ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &cmd, sizeof(cmd))) 6139ce48e5aSMichal Kubecek return -EFAULT; 6149ce48e5aSMichal Kubecek 6159ce48e5aSMichal Kubecek return 0; 6169ce48e5aSMichal Kubecek } 6179ce48e5aSMichal Kubecek 6189ce48e5aSMichal Kubecek /* Update device link settings with given ethtool_cmd. 6199ce48e5aSMichal Kubecek * 6209ce48e5aSMichal Kubecek * Backward compatibility note: for compatibility with legacy ethtool, this is 6219ce48e5aSMichal Kubecek * now always implemented via set_link_settings. When user's request updates 6229ce48e5aSMichal Kubecek * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel 6239ce48e5aSMichal Kubecek * warning is logged once (with name of 1st driver/device) to recommend user to 6249ce48e5aSMichal Kubecek * upgrade ethtool, and the request is rejected. 6259ce48e5aSMichal Kubecek */ 6269ce48e5aSMichal Kubecek static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) 6279ce48e5aSMichal Kubecek { 6289ce48e5aSMichal Kubecek struct ethtool_link_ksettings link_ksettings; 6299ce48e5aSMichal Kubecek struct ethtool_cmd cmd; 63073286734SMichal Kubecek int ret; 6319ce48e5aSMichal Kubecek 6329ce48e5aSMichal Kubecek ASSERT_RTNL(); 6339ce48e5aSMichal Kubecek 6349ce48e5aSMichal Kubecek if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 6359ce48e5aSMichal Kubecek return -EFAULT; 6369ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_link_ksettings) 6379ce48e5aSMichal Kubecek return -EOPNOTSUPP; 6389ce48e5aSMichal Kubecek 6399ce48e5aSMichal Kubecek if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) 6409ce48e5aSMichal Kubecek return -EINVAL; 6419ce48e5aSMichal Kubecek link_ksettings.base.link_mode_masks_nwords = 6429ce48e5aSMichal Kubecek __ETHTOOL_LINK_MODE_MASK_NU32; 64373286734SMichal Kubecek ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); 6441b1b1847SMichal Kubecek if (ret >= 0) { 64573286734SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); 6461b1b1847SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); 6471b1b1847SMichal Kubecek } 64873286734SMichal Kubecek return ret; 6499ce48e5aSMichal Kubecek } 6509ce48e5aSMichal Kubecek 6519ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev, 6529ce48e5aSMichal Kubecek void __user *useraddr) 6539ce48e5aSMichal Kubecek { 6549ce48e5aSMichal Kubecek struct ethtool_drvinfo info; 6559ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 6569ce48e5aSMichal Kubecek 6579ce48e5aSMichal Kubecek memset(&info, 0, sizeof(info)); 6589ce48e5aSMichal Kubecek info.cmd = ETHTOOL_GDRVINFO; 659*6a7e25c7SLeon Romanovsky strlcpy(info.version, UTS_RELEASE, sizeof(info.version)); 6609ce48e5aSMichal Kubecek if (ops->get_drvinfo) { 6619ce48e5aSMichal Kubecek ops->get_drvinfo(dev, &info); 6629ce48e5aSMichal Kubecek } else if (dev->dev.parent && dev->dev.parent->driver) { 6639ce48e5aSMichal Kubecek strlcpy(info.bus_info, dev_name(dev->dev.parent), 6649ce48e5aSMichal Kubecek sizeof(info.bus_info)); 6659ce48e5aSMichal Kubecek strlcpy(info.driver, dev->dev.parent->driver->name, 6669ce48e5aSMichal Kubecek sizeof(info.driver)); 6679ce48e5aSMichal Kubecek } else { 6689ce48e5aSMichal Kubecek return -EOPNOTSUPP; 6699ce48e5aSMichal Kubecek } 6709ce48e5aSMichal Kubecek 6719ce48e5aSMichal Kubecek /* 6729ce48e5aSMichal Kubecek * this method of obtaining string set info is deprecated; 6739ce48e5aSMichal Kubecek * Use ETHTOOL_GSSET_INFO instead. 6749ce48e5aSMichal Kubecek */ 6759ce48e5aSMichal Kubecek if (ops->get_sset_count) { 6769ce48e5aSMichal Kubecek int rc; 6779ce48e5aSMichal Kubecek 6789ce48e5aSMichal Kubecek rc = ops->get_sset_count(dev, ETH_SS_TEST); 6799ce48e5aSMichal Kubecek if (rc >= 0) 6809ce48e5aSMichal Kubecek info.testinfo_len = rc; 6819ce48e5aSMichal Kubecek rc = ops->get_sset_count(dev, ETH_SS_STATS); 6829ce48e5aSMichal Kubecek if (rc >= 0) 6839ce48e5aSMichal Kubecek info.n_stats = rc; 6849ce48e5aSMichal Kubecek rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); 6859ce48e5aSMichal Kubecek if (rc >= 0) 6869ce48e5aSMichal Kubecek info.n_priv_flags = rc; 6879ce48e5aSMichal Kubecek } 6889ce48e5aSMichal Kubecek if (ops->get_regs_len) { 6899ce48e5aSMichal Kubecek int ret = ops->get_regs_len(dev); 6909ce48e5aSMichal Kubecek 6919ce48e5aSMichal Kubecek if (ret > 0) 6929ce48e5aSMichal Kubecek info.regdump_len = ret; 6939ce48e5aSMichal Kubecek } 6949ce48e5aSMichal Kubecek 6959ce48e5aSMichal Kubecek if (ops->get_eeprom_len) 6969ce48e5aSMichal Kubecek info.eedump_len = ops->get_eeprom_len(dev); 6979ce48e5aSMichal Kubecek 6989ce48e5aSMichal Kubecek if (!info.fw_version[0]) 6999ce48e5aSMichal Kubecek devlink_compat_running_version(dev, info.fw_version, 7009ce48e5aSMichal Kubecek sizeof(info.fw_version)); 7019ce48e5aSMichal Kubecek 7029ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &info, sizeof(info))) 7039ce48e5aSMichal Kubecek return -EFAULT; 7049ce48e5aSMichal Kubecek return 0; 7059ce48e5aSMichal Kubecek } 7069ce48e5aSMichal Kubecek 7079ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, 7089ce48e5aSMichal Kubecek void __user *useraddr) 7099ce48e5aSMichal Kubecek { 7109ce48e5aSMichal Kubecek struct ethtool_sset_info info; 7119ce48e5aSMichal Kubecek u64 sset_mask; 7129ce48e5aSMichal Kubecek int i, idx = 0, n_bits = 0, ret, rc; 7139ce48e5aSMichal Kubecek u32 *info_buf = NULL; 7149ce48e5aSMichal Kubecek 7159ce48e5aSMichal Kubecek if (copy_from_user(&info, useraddr, sizeof(info))) 7169ce48e5aSMichal Kubecek return -EFAULT; 7179ce48e5aSMichal Kubecek 7189ce48e5aSMichal Kubecek /* store copy of mask, because we zero struct later on */ 7199ce48e5aSMichal Kubecek sset_mask = info.sset_mask; 7209ce48e5aSMichal Kubecek if (!sset_mask) 7219ce48e5aSMichal Kubecek return 0; 7229ce48e5aSMichal Kubecek 7239ce48e5aSMichal Kubecek /* calculate size of return buffer */ 7249ce48e5aSMichal Kubecek n_bits = hweight64(sset_mask); 7259ce48e5aSMichal Kubecek 7269ce48e5aSMichal Kubecek memset(&info, 0, sizeof(info)); 7279ce48e5aSMichal Kubecek info.cmd = ETHTOOL_GSSET_INFO; 7289ce48e5aSMichal Kubecek 7299ce48e5aSMichal Kubecek info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); 7309ce48e5aSMichal Kubecek if (!info_buf) 7319ce48e5aSMichal Kubecek return -ENOMEM; 7329ce48e5aSMichal Kubecek 7339ce48e5aSMichal Kubecek /* 7349ce48e5aSMichal Kubecek * fill return buffer based on input bitmask and successful 7359ce48e5aSMichal Kubecek * get_sset_count return 7369ce48e5aSMichal Kubecek */ 7379ce48e5aSMichal Kubecek for (i = 0; i < 64; i++) { 7389ce48e5aSMichal Kubecek if (!(sset_mask & (1ULL << i))) 7399ce48e5aSMichal Kubecek continue; 7409ce48e5aSMichal Kubecek 7419ce48e5aSMichal Kubecek rc = __ethtool_get_sset_count(dev, i); 7429ce48e5aSMichal Kubecek if (rc >= 0) { 7439ce48e5aSMichal Kubecek info.sset_mask |= (1ULL << i); 7449ce48e5aSMichal Kubecek info_buf[idx++] = rc; 7459ce48e5aSMichal Kubecek } 7469ce48e5aSMichal Kubecek } 7479ce48e5aSMichal Kubecek 7489ce48e5aSMichal Kubecek ret = -EFAULT; 7499ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &info, sizeof(info))) 7509ce48e5aSMichal Kubecek goto out; 7519ce48e5aSMichal Kubecek 7529ce48e5aSMichal Kubecek useraddr += offsetof(struct ethtool_sset_info, data); 7539ce48e5aSMichal Kubecek if (copy_to_user(useraddr, info_buf, idx * sizeof(u32))) 7549ce48e5aSMichal Kubecek goto out; 7559ce48e5aSMichal Kubecek 7569ce48e5aSMichal Kubecek ret = 0; 7579ce48e5aSMichal Kubecek 7589ce48e5aSMichal Kubecek out: 7599ce48e5aSMichal Kubecek kfree(info_buf); 7609ce48e5aSMichal Kubecek return ret; 7619ce48e5aSMichal Kubecek } 7629ce48e5aSMichal Kubecek 7639ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, 7649ce48e5aSMichal Kubecek u32 cmd, void __user *useraddr) 7659ce48e5aSMichal Kubecek { 7669ce48e5aSMichal Kubecek struct ethtool_rxnfc info; 7679ce48e5aSMichal Kubecek size_t info_size = sizeof(info); 7689ce48e5aSMichal Kubecek int rc; 7699ce48e5aSMichal Kubecek 7709ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_rxnfc) 7719ce48e5aSMichal Kubecek return -EOPNOTSUPP; 7729ce48e5aSMichal Kubecek 7739ce48e5aSMichal Kubecek /* struct ethtool_rxnfc was originally defined for 7749ce48e5aSMichal Kubecek * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 7759ce48e5aSMichal Kubecek * members. User-space might still be using that 7769ce48e5aSMichal Kubecek * definition. */ 7779ce48e5aSMichal Kubecek if (cmd == ETHTOOL_SRXFH) 7789ce48e5aSMichal Kubecek info_size = (offsetof(struct ethtool_rxnfc, data) + 7799ce48e5aSMichal Kubecek sizeof(info.data)); 7809ce48e5aSMichal Kubecek 7819ce48e5aSMichal Kubecek if (copy_from_user(&info, useraddr, info_size)) 7829ce48e5aSMichal Kubecek return -EFAULT; 7839ce48e5aSMichal Kubecek 7849ce48e5aSMichal Kubecek rc = dev->ethtool_ops->set_rxnfc(dev, &info); 7859ce48e5aSMichal Kubecek if (rc) 7869ce48e5aSMichal Kubecek return rc; 7879ce48e5aSMichal Kubecek 7889ce48e5aSMichal Kubecek if (cmd == ETHTOOL_SRXCLSRLINS && 7899ce48e5aSMichal Kubecek copy_to_user(useraddr, &info, info_size)) 7909ce48e5aSMichal Kubecek return -EFAULT; 7919ce48e5aSMichal Kubecek 7929ce48e5aSMichal Kubecek return 0; 7939ce48e5aSMichal Kubecek } 7949ce48e5aSMichal Kubecek 7959ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, 7969ce48e5aSMichal Kubecek u32 cmd, void __user *useraddr) 7979ce48e5aSMichal Kubecek { 7989ce48e5aSMichal Kubecek struct ethtool_rxnfc info; 7999ce48e5aSMichal Kubecek size_t info_size = sizeof(info); 8009ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 8019ce48e5aSMichal Kubecek int ret; 8029ce48e5aSMichal Kubecek void *rule_buf = NULL; 8039ce48e5aSMichal Kubecek 8049ce48e5aSMichal Kubecek if (!ops->get_rxnfc) 8059ce48e5aSMichal Kubecek return -EOPNOTSUPP; 8069ce48e5aSMichal Kubecek 8079ce48e5aSMichal Kubecek /* struct ethtool_rxnfc was originally defined for 8089ce48e5aSMichal Kubecek * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data 8099ce48e5aSMichal Kubecek * members. User-space might still be using that 8109ce48e5aSMichal Kubecek * definition. */ 8119ce48e5aSMichal Kubecek if (cmd == ETHTOOL_GRXFH) 8129ce48e5aSMichal Kubecek info_size = (offsetof(struct ethtool_rxnfc, data) + 8139ce48e5aSMichal Kubecek sizeof(info.data)); 8149ce48e5aSMichal Kubecek 8159ce48e5aSMichal Kubecek if (copy_from_user(&info, useraddr, info_size)) 8169ce48e5aSMichal Kubecek return -EFAULT; 8179ce48e5aSMichal Kubecek 8189ce48e5aSMichal Kubecek /* If FLOW_RSS was requested then user-space must be using the 8199ce48e5aSMichal Kubecek * new definition, as FLOW_RSS is newer. 8209ce48e5aSMichal Kubecek */ 8219ce48e5aSMichal Kubecek if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) { 8229ce48e5aSMichal Kubecek info_size = sizeof(info); 8239ce48e5aSMichal Kubecek if (copy_from_user(&info, useraddr, info_size)) 8249ce48e5aSMichal Kubecek return -EFAULT; 8259ce48e5aSMichal Kubecek /* Since malicious users may modify the original data, 8269ce48e5aSMichal Kubecek * we need to check whether FLOW_RSS is still requested. 8279ce48e5aSMichal Kubecek */ 8289ce48e5aSMichal Kubecek if (!(info.flow_type & FLOW_RSS)) 8299ce48e5aSMichal Kubecek return -EINVAL; 8309ce48e5aSMichal Kubecek } 8319ce48e5aSMichal Kubecek 8329ce48e5aSMichal Kubecek if (info.cmd != cmd) 8339ce48e5aSMichal Kubecek return -EINVAL; 8349ce48e5aSMichal Kubecek 8359ce48e5aSMichal Kubecek if (info.cmd == ETHTOOL_GRXCLSRLALL) { 8369ce48e5aSMichal Kubecek if (info.rule_cnt > 0) { 8379ce48e5aSMichal Kubecek if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) 8389ce48e5aSMichal Kubecek rule_buf = kcalloc(info.rule_cnt, sizeof(u32), 8399ce48e5aSMichal Kubecek GFP_USER); 8409ce48e5aSMichal Kubecek if (!rule_buf) 8419ce48e5aSMichal Kubecek return -ENOMEM; 8429ce48e5aSMichal Kubecek } 8439ce48e5aSMichal Kubecek } 8449ce48e5aSMichal Kubecek 8459ce48e5aSMichal Kubecek ret = ops->get_rxnfc(dev, &info, rule_buf); 8469ce48e5aSMichal Kubecek if (ret < 0) 8479ce48e5aSMichal Kubecek goto err_out; 8489ce48e5aSMichal Kubecek 8499ce48e5aSMichal Kubecek ret = -EFAULT; 8509ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &info, info_size)) 8519ce48e5aSMichal Kubecek goto err_out; 8529ce48e5aSMichal Kubecek 8539ce48e5aSMichal Kubecek if (rule_buf) { 8549ce48e5aSMichal Kubecek useraddr += offsetof(struct ethtool_rxnfc, rule_locs); 8559ce48e5aSMichal Kubecek if (copy_to_user(useraddr, rule_buf, 8569ce48e5aSMichal Kubecek info.rule_cnt * sizeof(u32))) 8579ce48e5aSMichal Kubecek goto err_out; 8589ce48e5aSMichal Kubecek } 8599ce48e5aSMichal Kubecek ret = 0; 8609ce48e5aSMichal Kubecek 8619ce48e5aSMichal Kubecek err_out: 8629ce48e5aSMichal Kubecek kfree(rule_buf); 8639ce48e5aSMichal Kubecek 8649ce48e5aSMichal Kubecek return ret; 8659ce48e5aSMichal Kubecek } 8669ce48e5aSMichal Kubecek 8679ce48e5aSMichal Kubecek static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, 8689ce48e5aSMichal Kubecek struct ethtool_rxnfc *rx_rings, 8699ce48e5aSMichal Kubecek u32 size) 8709ce48e5aSMichal Kubecek { 8719ce48e5aSMichal Kubecek int i; 8729ce48e5aSMichal Kubecek 8739ce48e5aSMichal Kubecek if (copy_from_user(indir, useraddr, size * sizeof(indir[0]))) 8749ce48e5aSMichal Kubecek return -EFAULT; 8759ce48e5aSMichal Kubecek 8769ce48e5aSMichal Kubecek /* Validate ring indices */ 8779ce48e5aSMichal Kubecek for (i = 0; i < size; i++) 8789ce48e5aSMichal Kubecek if (indir[i] >= rx_rings->data) 8799ce48e5aSMichal Kubecek return -EINVAL; 8809ce48e5aSMichal Kubecek 8819ce48e5aSMichal Kubecek return 0; 8829ce48e5aSMichal Kubecek } 8839ce48e5aSMichal Kubecek 8849ce48e5aSMichal Kubecek u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; 8859ce48e5aSMichal Kubecek 8869ce48e5aSMichal Kubecek void netdev_rss_key_fill(void *buffer, size_t len) 8879ce48e5aSMichal Kubecek { 8889ce48e5aSMichal Kubecek BUG_ON(len > sizeof(netdev_rss_key)); 8899ce48e5aSMichal Kubecek net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); 8909ce48e5aSMichal Kubecek memcpy(buffer, netdev_rss_key, len); 8919ce48e5aSMichal Kubecek } 8929ce48e5aSMichal Kubecek EXPORT_SYMBOL(netdev_rss_key_fill); 8939ce48e5aSMichal Kubecek 8949ce48e5aSMichal Kubecek static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max) 8959ce48e5aSMichal Kubecek { 8969ce48e5aSMichal Kubecek u32 dev_size, current_max = 0; 8979ce48e5aSMichal Kubecek u32 *indir; 8989ce48e5aSMichal Kubecek int ret; 8999ce48e5aSMichal Kubecek 9009ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_rxfh_indir_size || 9019ce48e5aSMichal Kubecek !dev->ethtool_ops->get_rxfh) 9029ce48e5aSMichal Kubecek return -EOPNOTSUPP; 9039ce48e5aSMichal Kubecek dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 9049ce48e5aSMichal Kubecek if (dev_size == 0) 9059ce48e5aSMichal Kubecek return -EOPNOTSUPP; 9069ce48e5aSMichal Kubecek 9079ce48e5aSMichal Kubecek indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 9089ce48e5aSMichal Kubecek if (!indir) 9099ce48e5aSMichal Kubecek return -ENOMEM; 9109ce48e5aSMichal Kubecek 9119ce48e5aSMichal Kubecek ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); 9129ce48e5aSMichal Kubecek if (ret) 9139ce48e5aSMichal Kubecek goto out; 9149ce48e5aSMichal Kubecek 9159ce48e5aSMichal Kubecek while (dev_size--) 9169ce48e5aSMichal Kubecek current_max = max(current_max, indir[dev_size]); 9179ce48e5aSMichal Kubecek 9189ce48e5aSMichal Kubecek *max = current_max; 9199ce48e5aSMichal Kubecek 9209ce48e5aSMichal Kubecek out: 9219ce48e5aSMichal Kubecek kfree(indir); 9229ce48e5aSMichal Kubecek return ret; 9239ce48e5aSMichal Kubecek } 9249ce48e5aSMichal Kubecek 9259ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, 9269ce48e5aSMichal Kubecek void __user *useraddr) 9279ce48e5aSMichal Kubecek { 9289ce48e5aSMichal Kubecek u32 user_size, dev_size; 9299ce48e5aSMichal Kubecek u32 *indir; 9309ce48e5aSMichal Kubecek int ret; 9319ce48e5aSMichal Kubecek 9329ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_rxfh_indir_size || 9339ce48e5aSMichal Kubecek !dev->ethtool_ops->get_rxfh) 9349ce48e5aSMichal Kubecek return -EOPNOTSUPP; 9359ce48e5aSMichal Kubecek dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); 9369ce48e5aSMichal Kubecek if (dev_size == 0) 9379ce48e5aSMichal Kubecek return -EOPNOTSUPP; 9389ce48e5aSMichal Kubecek 9399ce48e5aSMichal Kubecek if (copy_from_user(&user_size, 9409ce48e5aSMichal Kubecek useraddr + offsetof(struct ethtool_rxfh_indir, size), 9419ce48e5aSMichal Kubecek sizeof(user_size))) 9429ce48e5aSMichal Kubecek return -EFAULT; 9439ce48e5aSMichal Kubecek 9449ce48e5aSMichal Kubecek if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), 9459ce48e5aSMichal Kubecek &dev_size, sizeof(dev_size))) 9469ce48e5aSMichal Kubecek return -EFAULT; 9479ce48e5aSMichal Kubecek 9489ce48e5aSMichal Kubecek /* If the user buffer size is 0, this is just a query for the 9499ce48e5aSMichal Kubecek * device table size. Otherwise, if it's smaller than the 9509ce48e5aSMichal Kubecek * device table size it's an error. 9519ce48e5aSMichal Kubecek */ 9529ce48e5aSMichal Kubecek if (user_size < dev_size) 9539ce48e5aSMichal Kubecek return user_size == 0 ? 0 : -EINVAL; 9549ce48e5aSMichal Kubecek 9559ce48e5aSMichal Kubecek indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 9569ce48e5aSMichal Kubecek if (!indir) 9579ce48e5aSMichal Kubecek return -ENOMEM; 9589ce48e5aSMichal Kubecek 9599ce48e5aSMichal Kubecek ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); 9609ce48e5aSMichal Kubecek if (ret) 9619ce48e5aSMichal Kubecek goto out; 9629ce48e5aSMichal Kubecek 9639ce48e5aSMichal Kubecek if (copy_to_user(useraddr + 9649ce48e5aSMichal Kubecek offsetof(struct ethtool_rxfh_indir, ring_index[0]), 9659ce48e5aSMichal Kubecek indir, dev_size * sizeof(indir[0]))) 9669ce48e5aSMichal Kubecek ret = -EFAULT; 9679ce48e5aSMichal Kubecek 9689ce48e5aSMichal Kubecek out: 9699ce48e5aSMichal Kubecek kfree(indir); 9709ce48e5aSMichal Kubecek return ret; 9719ce48e5aSMichal Kubecek } 9729ce48e5aSMichal Kubecek 9739ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, 9749ce48e5aSMichal Kubecek void __user *useraddr) 9759ce48e5aSMichal Kubecek { 9769ce48e5aSMichal Kubecek struct ethtool_rxnfc rx_rings; 9779ce48e5aSMichal Kubecek u32 user_size, dev_size, i; 9789ce48e5aSMichal Kubecek u32 *indir; 9799ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 9809ce48e5aSMichal Kubecek int ret; 9819ce48e5aSMichal Kubecek u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); 9829ce48e5aSMichal Kubecek 9839ce48e5aSMichal Kubecek if (!ops->get_rxfh_indir_size || !ops->set_rxfh || 9849ce48e5aSMichal Kubecek !ops->get_rxnfc) 9859ce48e5aSMichal Kubecek return -EOPNOTSUPP; 9869ce48e5aSMichal Kubecek 9879ce48e5aSMichal Kubecek dev_size = ops->get_rxfh_indir_size(dev); 9889ce48e5aSMichal Kubecek if (dev_size == 0) 9899ce48e5aSMichal Kubecek return -EOPNOTSUPP; 9909ce48e5aSMichal Kubecek 9919ce48e5aSMichal Kubecek if (copy_from_user(&user_size, 9929ce48e5aSMichal Kubecek useraddr + offsetof(struct ethtool_rxfh_indir, size), 9939ce48e5aSMichal Kubecek sizeof(user_size))) 9949ce48e5aSMichal Kubecek return -EFAULT; 9959ce48e5aSMichal Kubecek 9969ce48e5aSMichal Kubecek if (user_size != 0 && user_size != dev_size) 9979ce48e5aSMichal Kubecek return -EINVAL; 9989ce48e5aSMichal Kubecek 9999ce48e5aSMichal Kubecek indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); 10009ce48e5aSMichal Kubecek if (!indir) 10019ce48e5aSMichal Kubecek return -ENOMEM; 10029ce48e5aSMichal Kubecek 10039ce48e5aSMichal Kubecek rx_rings.cmd = ETHTOOL_GRXRINGS; 10049ce48e5aSMichal Kubecek ret = ops->get_rxnfc(dev, &rx_rings, NULL); 10059ce48e5aSMichal Kubecek if (ret) 10069ce48e5aSMichal Kubecek goto out; 10079ce48e5aSMichal Kubecek 10089ce48e5aSMichal Kubecek if (user_size == 0) { 10099ce48e5aSMichal Kubecek for (i = 0; i < dev_size; i++) 10109ce48e5aSMichal Kubecek indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 10119ce48e5aSMichal Kubecek } else { 10129ce48e5aSMichal Kubecek ret = ethtool_copy_validate_indir(indir, 10139ce48e5aSMichal Kubecek useraddr + ringidx_offset, 10149ce48e5aSMichal Kubecek &rx_rings, 10159ce48e5aSMichal Kubecek dev_size); 10169ce48e5aSMichal Kubecek if (ret) 10179ce48e5aSMichal Kubecek goto out; 10189ce48e5aSMichal Kubecek } 10199ce48e5aSMichal Kubecek 10209ce48e5aSMichal Kubecek ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); 10219ce48e5aSMichal Kubecek if (ret) 10229ce48e5aSMichal Kubecek goto out; 10239ce48e5aSMichal Kubecek 10249ce48e5aSMichal Kubecek /* indicate whether rxfh was set to default */ 10259ce48e5aSMichal Kubecek if (user_size == 0) 10269ce48e5aSMichal Kubecek dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 10279ce48e5aSMichal Kubecek else 10289ce48e5aSMichal Kubecek dev->priv_flags |= IFF_RXFH_CONFIGURED; 10299ce48e5aSMichal Kubecek 10309ce48e5aSMichal Kubecek out: 10319ce48e5aSMichal Kubecek kfree(indir); 10329ce48e5aSMichal Kubecek return ret; 10339ce48e5aSMichal Kubecek } 10349ce48e5aSMichal Kubecek 10359ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, 10369ce48e5aSMichal Kubecek void __user *useraddr) 10379ce48e5aSMichal Kubecek { 10389ce48e5aSMichal Kubecek int ret; 10399ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 10409ce48e5aSMichal Kubecek u32 user_indir_size, user_key_size; 10419ce48e5aSMichal Kubecek u32 dev_indir_size = 0, dev_key_size = 0; 10429ce48e5aSMichal Kubecek struct ethtool_rxfh rxfh; 10439ce48e5aSMichal Kubecek u32 total_size; 10449ce48e5aSMichal Kubecek u32 indir_bytes; 10459ce48e5aSMichal Kubecek u32 *indir = NULL; 10469ce48e5aSMichal Kubecek u8 dev_hfunc = 0; 10479ce48e5aSMichal Kubecek u8 *hkey = NULL; 10489ce48e5aSMichal Kubecek u8 *rss_config; 10499ce48e5aSMichal Kubecek 10509ce48e5aSMichal Kubecek if (!ops->get_rxfh) 10519ce48e5aSMichal Kubecek return -EOPNOTSUPP; 10529ce48e5aSMichal Kubecek 10539ce48e5aSMichal Kubecek if (ops->get_rxfh_indir_size) 10549ce48e5aSMichal Kubecek dev_indir_size = ops->get_rxfh_indir_size(dev); 10559ce48e5aSMichal Kubecek if (ops->get_rxfh_key_size) 10569ce48e5aSMichal Kubecek dev_key_size = ops->get_rxfh_key_size(dev); 10579ce48e5aSMichal Kubecek 10589ce48e5aSMichal Kubecek if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 10599ce48e5aSMichal Kubecek return -EFAULT; 10609ce48e5aSMichal Kubecek user_indir_size = rxfh.indir_size; 10619ce48e5aSMichal Kubecek user_key_size = rxfh.key_size; 10629ce48e5aSMichal Kubecek 10639ce48e5aSMichal Kubecek /* Check that reserved fields are 0 for now */ 10649ce48e5aSMichal Kubecek if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 10659ce48e5aSMichal Kubecek return -EINVAL; 10669ce48e5aSMichal Kubecek /* Most drivers don't handle rss_context, check it's 0 as well */ 10679ce48e5aSMichal Kubecek if (rxfh.rss_context && !ops->get_rxfh_context) 10689ce48e5aSMichal Kubecek return -EOPNOTSUPP; 10699ce48e5aSMichal Kubecek 10709ce48e5aSMichal Kubecek rxfh.indir_size = dev_indir_size; 10719ce48e5aSMichal Kubecek rxfh.key_size = dev_key_size; 10729ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) 10739ce48e5aSMichal Kubecek return -EFAULT; 10749ce48e5aSMichal Kubecek 10759ce48e5aSMichal Kubecek if ((user_indir_size && (user_indir_size != dev_indir_size)) || 10769ce48e5aSMichal Kubecek (user_key_size && (user_key_size != dev_key_size))) 10779ce48e5aSMichal Kubecek return -EINVAL; 10789ce48e5aSMichal Kubecek 10799ce48e5aSMichal Kubecek indir_bytes = user_indir_size * sizeof(indir[0]); 10809ce48e5aSMichal Kubecek total_size = indir_bytes + user_key_size; 10819ce48e5aSMichal Kubecek rss_config = kzalloc(total_size, GFP_USER); 10829ce48e5aSMichal Kubecek if (!rss_config) 10839ce48e5aSMichal Kubecek return -ENOMEM; 10849ce48e5aSMichal Kubecek 10859ce48e5aSMichal Kubecek if (user_indir_size) 10869ce48e5aSMichal Kubecek indir = (u32 *)rss_config; 10879ce48e5aSMichal Kubecek 10889ce48e5aSMichal Kubecek if (user_key_size) 10899ce48e5aSMichal Kubecek hkey = rss_config + indir_bytes; 10909ce48e5aSMichal Kubecek 10919ce48e5aSMichal Kubecek if (rxfh.rss_context) 10929ce48e5aSMichal Kubecek ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey, 10939ce48e5aSMichal Kubecek &dev_hfunc, 10949ce48e5aSMichal Kubecek rxfh.rss_context); 10959ce48e5aSMichal Kubecek else 10969ce48e5aSMichal Kubecek ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); 10979ce48e5aSMichal Kubecek if (ret) 10989ce48e5aSMichal Kubecek goto out; 10999ce48e5aSMichal Kubecek 11009ce48e5aSMichal Kubecek if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), 11019ce48e5aSMichal Kubecek &dev_hfunc, sizeof(rxfh.hfunc))) { 11029ce48e5aSMichal Kubecek ret = -EFAULT; 11039ce48e5aSMichal Kubecek } else if (copy_to_user(useraddr + 11049ce48e5aSMichal Kubecek offsetof(struct ethtool_rxfh, rss_config[0]), 11059ce48e5aSMichal Kubecek rss_config, total_size)) { 11069ce48e5aSMichal Kubecek ret = -EFAULT; 11079ce48e5aSMichal Kubecek } 11089ce48e5aSMichal Kubecek out: 11099ce48e5aSMichal Kubecek kfree(rss_config); 11109ce48e5aSMichal Kubecek 11119ce48e5aSMichal Kubecek return ret; 11129ce48e5aSMichal Kubecek } 11139ce48e5aSMichal Kubecek 11149ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, 11159ce48e5aSMichal Kubecek void __user *useraddr) 11169ce48e5aSMichal Kubecek { 11179ce48e5aSMichal Kubecek int ret; 11189ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 11199ce48e5aSMichal Kubecek struct ethtool_rxnfc rx_rings; 11209ce48e5aSMichal Kubecek struct ethtool_rxfh rxfh; 11219ce48e5aSMichal Kubecek u32 dev_indir_size = 0, dev_key_size = 0, i; 11229ce48e5aSMichal Kubecek u32 *indir = NULL, indir_bytes = 0; 11239ce48e5aSMichal Kubecek u8 *hkey = NULL; 11249ce48e5aSMichal Kubecek u8 *rss_config; 11259ce48e5aSMichal Kubecek u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); 11269ce48e5aSMichal Kubecek bool delete = false; 11279ce48e5aSMichal Kubecek 11289ce48e5aSMichal Kubecek if (!ops->get_rxnfc || !ops->set_rxfh) 11299ce48e5aSMichal Kubecek return -EOPNOTSUPP; 11309ce48e5aSMichal Kubecek 11319ce48e5aSMichal Kubecek if (ops->get_rxfh_indir_size) 11329ce48e5aSMichal Kubecek dev_indir_size = ops->get_rxfh_indir_size(dev); 11339ce48e5aSMichal Kubecek if (ops->get_rxfh_key_size) 11349ce48e5aSMichal Kubecek dev_key_size = ops->get_rxfh_key_size(dev); 11359ce48e5aSMichal Kubecek 11369ce48e5aSMichal Kubecek if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) 11379ce48e5aSMichal Kubecek return -EFAULT; 11389ce48e5aSMichal Kubecek 11399ce48e5aSMichal Kubecek /* Check that reserved fields are 0 for now */ 11409ce48e5aSMichal Kubecek if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) 11419ce48e5aSMichal Kubecek return -EINVAL; 11429ce48e5aSMichal Kubecek /* Most drivers don't handle rss_context, check it's 0 as well */ 11439ce48e5aSMichal Kubecek if (rxfh.rss_context && !ops->set_rxfh_context) 11449ce48e5aSMichal Kubecek return -EOPNOTSUPP; 11459ce48e5aSMichal Kubecek 11469ce48e5aSMichal Kubecek /* If either indir, hash key or function is valid, proceed further. 11479ce48e5aSMichal Kubecek * Must request at least one change: indir size, hash key or function. 11489ce48e5aSMichal Kubecek */ 11499ce48e5aSMichal Kubecek if ((rxfh.indir_size && 11509ce48e5aSMichal Kubecek rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && 11519ce48e5aSMichal Kubecek rxfh.indir_size != dev_indir_size) || 11529ce48e5aSMichal Kubecek (rxfh.key_size && (rxfh.key_size != dev_key_size)) || 11539ce48e5aSMichal Kubecek (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && 11549ce48e5aSMichal Kubecek rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) 11559ce48e5aSMichal Kubecek return -EINVAL; 11569ce48e5aSMichal Kubecek 11579ce48e5aSMichal Kubecek if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 11589ce48e5aSMichal Kubecek indir_bytes = dev_indir_size * sizeof(indir[0]); 11599ce48e5aSMichal Kubecek 11609ce48e5aSMichal Kubecek rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); 11619ce48e5aSMichal Kubecek if (!rss_config) 11629ce48e5aSMichal Kubecek return -ENOMEM; 11639ce48e5aSMichal Kubecek 11649ce48e5aSMichal Kubecek rx_rings.cmd = ETHTOOL_GRXRINGS; 11659ce48e5aSMichal Kubecek ret = ops->get_rxnfc(dev, &rx_rings, NULL); 11669ce48e5aSMichal Kubecek if (ret) 11679ce48e5aSMichal Kubecek goto out; 11689ce48e5aSMichal Kubecek 11699ce48e5aSMichal Kubecek /* rxfh.indir_size == 0 means reset the indir table to default (master 11709ce48e5aSMichal Kubecek * context) or delete the context (other RSS contexts). 11719ce48e5aSMichal Kubecek * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. 11729ce48e5aSMichal Kubecek */ 11739ce48e5aSMichal Kubecek if (rxfh.indir_size && 11749ce48e5aSMichal Kubecek rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { 11759ce48e5aSMichal Kubecek indir = (u32 *)rss_config; 11769ce48e5aSMichal Kubecek ret = ethtool_copy_validate_indir(indir, 11779ce48e5aSMichal Kubecek useraddr + rss_cfg_offset, 11789ce48e5aSMichal Kubecek &rx_rings, 11799ce48e5aSMichal Kubecek rxfh.indir_size); 11809ce48e5aSMichal Kubecek if (ret) 11819ce48e5aSMichal Kubecek goto out; 11829ce48e5aSMichal Kubecek } else if (rxfh.indir_size == 0) { 11839ce48e5aSMichal Kubecek if (rxfh.rss_context == 0) { 11849ce48e5aSMichal Kubecek indir = (u32 *)rss_config; 11859ce48e5aSMichal Kubecek for (i = 0; i < dev_indir_size; i++) 11869ce48e5aSMichal Kubecek indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); 11879ce48e5aSMichal Kubecek } else { 11889ce48e5aSMichal Kubecek delete = true; 11899ce48e5aSMichal Kubecek } 11909ce48e5aSMichal Kubecek } 11919ce48e5aSMichal Kubecek 11929ce48e5aSMichal Kubecek if (rxfh.key_size) { 11939ce48e5aSMichal Kubecek hkey = rss_config + indir_bytes; 11949ce48e5aSMichal Kubecek if (copy_from_user(hkey, 11959ce48e5aSMichal Kubecek useraddr + rss_cfg_offset + indir_bytes, 11969ce48e5aSMichal Kubecek rxfh.key_size)) { 11979ce48e5aSMichal Kubecek ret = -EFAULT; 11989ce48e5aSMichal Kubecek goto out; 11999ce48e5aSMichal Kubecek } 12009ce48e5aSMichal Kubecek } 12019ce48e5aSMichal Kubecek 12029ce48e5aSMichal Kubecek if (rxfh.rss_context) 12039ce48e5aSMichal Kubecek ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc, 12049ce48e5aSMichal Kubecek &rxfh.rss_context, delete); 12059ce48e5aSMichal Kubecek else 12069ce48e5aSMichal Kubecek ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); 12079ce48e5aSMichal Kubecek if (ret) 12089ce48e5aSMichal Kubecek goto out; 12099ce48e5aSMichal Kubecek 12109ce48e5aSMichal Kubecek if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), 12119ce48e5aSMichal Kubecek &rxfh.rss_context, sizeof(rxfh.rss_context))) 12129ce48e5aSMichal Kubecek ret = -EFAULT; 12139ce48e5aSMichal Kubecek 12149ce48e5aSMichal Kubecek if (!rxfh.rss_context) { 12159ce48e5aSMichal Kubecek /* indicate whether rxfh was set to default */ 12169ce48e5aSMichal Kubecek if (rxfh.indir_size == 0) 12179ce48e5aSMichal Kubecek dev->priv_flags &= ~IFF_RXFH_CONFIGURED; 12189ce48e5aSMichal Kubecek else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) 12199ce48e5aSMichal Kubecek dev->priv_flags |= IFF_RXFH_CONFIGURED; 12209ce48e5aSMichal Kubecek } 12219ce48e5aSMichal Kubecek 12229ce48e5aSMichal Kubecek out: 12239ce48e5aSMichal Kubecek kfree(rss_config); 12249ce48e5aSMichal Kubecek return ret; 12259ce48e5aSMichal Kubecek } 12269ce48e5aSMichal Kubecek 12279ce48e5aSMichal Kubecek static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) 12289ce48e5aSMichal Kubecek { 12299ce48e5aSMichal Kubecek struct ethtool_regs regs; 12309ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 12319ce48e5aSMichal Kubecek void *regbuf; 12329ce48e5aSMichal Kubecek int reglen, ret; 12339ce48e5aSMichal Kubecek 12349ce48e5aSMichal Kubecek if (!ops->get_regs || !ops->get_regs_len) 12359ce48e5aSMichal Kubecek return -EOPNOTSUPP; 12369ce48e5aSMichal Kubecek 12379ce48e5aSMichal Kubecek if (copy_from_user(®s, useraddr, sizeof(regs))) 12389ce48e5aSMichal Kubecek return -EFAULT; 12399ce48e5aSMichal Kubecek 12409ce48e5aSMichal Kubecek reglen = ops->get_regs_len(dev); 12419ce48e5aSMichal Kubecek if (reglen <= 0) 12429ce48e5aSMichal Kubecek return reglen; 12439ce48e5aSMichal Kubecek 12449ce48e5aSMichal Kubecek if (regs.len > reglen) 12459ce48e5aSMichal Kubecek regs.len = reglen; 12469ce48e5aSMichal Kubecek 12479ce48e5aSMichal Kubecek regbuf = vzalloc(reglen); 12489ce48e5aSMichal Kubecek if (!regbuf) 12499ce48e5aSMichal Kubecek return -ENOMEM; 12509ce48e5aSMichal Kubecek 12519ce48e5aSMichal Kubecek if (regs.len < reglen) 12529ce48e5aSMichal Kubecek reglen = regs.len; 12539ce48e5aSMichal Kubecek 12549ce48e5aSMichal Kubecek ops->get_regs(dev, ®s, regbuf); 12559ce48e5aSMichal Kubecek 12569ce48e5aSMichal Kubecek ret = -EFAULT; 12579ce48e5aSMichal Kubecek if (copy_to_user(useraddr, ®s, sizeof(regs))) 12589ce48e5aSMichal Kubecek goto out; 12599ce48e5aSMichal Kubecek useraddr += offsetof(struct ethtool_regs, data); 12609ce48e5aSMichal Kubecek if (copy_to_user(useraddr, regbuf, reglen)) 12619ce48e5aSMichal Kubecek goto out; 12629ce48e5aSMichal Kubecek ret = 0; 12639ce48e5aSMichal Kubecek 12649ce48e5aSMichal Kubecek out: 12659ce48e5aSMichal Kubecek vfree(regbuf); 12669ce48e5aSMichal Kubecek return ret; 12679ce48e5aSMichal Kubecek } 12689ce48e5aSMichal Kubecek 12699ce48e5aSMichal Kubecek static int ethtool_reset(struct net_device *dev, char __user *useraddr) 12709ce48e5aSMichal Kubecek { 12719ce48e5aSMichal Kubecek struct ethtool_value reset; 12729ce48e5aSMichal Kubecek int ret; 12739ce48e5aSMichal Kubecek 12749ce48e5aSMichal Kubecek if (!dev->ethtool_ops->reset) 12759ce48e5aSMichal Kubecek return -EOPNOTSUPP; 12769ce48e5aSMichal Kubecek 12779ce48e5aSMichal Kubecek if (copy_from_user(&reset, useraddr, sizeof(reset))) 12789ce48e5aSMichal Kubecek return -EFAULT; 12799ce48e5aSMichal Kubecek 12809ce48e5aSMichal Kubecek ret = dev->ethtool_ops->reset(dev, &reset.data); 12819ce48e5aSMichal Kubecek if (ret) 12829ce48e5aSMichal Kubecek return ret; 12839ce48e5aSMichal Kubecek 12849ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &reset, sizeof(reset))) 12859ce48e5aSMichal Kubecek return -EFAULT; 12869ce48e5aSMichal Kubecek return 0; 12879ce48e5aSMichal Kubecek } 12889ce48e5aSMichal Kubecek 12899ce48e5aSMichal Kubecek static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) 12909ce48e5aSMichal Kubecek { 12919ce48e5aSMichal Kubecek struct ethtool_wolinfo wol; 12929ce48e5aSMichal Kubecek 12939ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_wol) 12949ce48e5aSMichal Kubecek return -EOPNOTSUPP; 12959ce48e5aSMichal Kubecek 12969ce48e5aSMichal Kubecek memset(&wol, 0, sizeof(struct ethtool_wolinfo)); 12979ce48e5aSMichal Kubecek wol.cmd = ETHTOOL_GWOL; 12989ce48e5aSMichal Kubecek dev->ethtool_ops->get_wol(dev, &wol); 12999ce48e5aSMichal Kubecek 13009ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &wol, sizeof(wol))) 13019ce48e5aSMichal Kubecek return -EFAULT; 13029ce48e5aSMichal Kubecek return 0; 13039ce48e5aSMichal Kubecek } 13049ce48e5aSMichal Kubecek 13059ce48e5aSMichal Kubecek static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) 13069ce48e5aSMichal Kubecek { 13079ce48e5aSMichal Kubecek struct ethtool_wolinfo wol; 13089ce48e5aSMichal Kubecek int ret; 13099ce48e5aSMichal Kubecek 13109ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_wol) 13119ce48e5aSMichal Kubecek return -EOPNOTSUPP; 13129ce48e5aSMichal Kubecek 13139ce48e5aSMichal Kubecek if (copy_from_user(&wol, useraddr, sizeof(wol))) 13149ce48e5aSMichal Kubecek return -EFAULT; 13159ce48e5aSMichal Kubecek 13169ce48e5aSMichal Kubecek ret = dev->ethtool_ops->set_wol(dev, &wol); 13179ce48e5aSMichal Kubecek if (ret) 13189ce48e5aSMichal Kubecek return ret; 13199ce48e5aSMichal Kubecek 13209ce48e5aSMichal Kubecek dev->wol_enabled = !!wol.wolopts; 132167bffa79SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); 13229ce48e5aSMichal Kubecek 13239ce48e5aSMichal Kubecek return 0; 13249ce48e5aSMichal Kubecek } 13259ce48e5aSMichal Kubecek 13269ce48e5aSMichal Kubecek static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) 13279ce48e5aSMichal Kubecek { 13289ce48e5aSMichal Kubecek struct ethtool_eee edata; 13299ce48e5aSMichal Kubecek int rc; 13309ce48e5aSMichal Kubecek 13319ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_eee) 13329ce48e5aSMichal Kubecek return -EOPNOTSUPP; 13339ce48e5aSMichal Kubecek 13349ce48e5aSMichal Kubecek memset(&edata, 0, sizeof(struct ethtool_eee)); 13359ce48e5aSMichal Kubecek edata.cmd = ETHTOOL_GEEE; 13369ce48e5aSMichal Kubecek rc = dev->ethtool_ops->get_eee(dev, &edata); 13379ce48e5aSMichal Kubecek 13389ce48e5aSMichal Kubecek if (rc) 13399ce48e5aSMichal Kubecek return rc; 13409ce48e5aSMichal Kubecek 13419ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &edata, sizeof(edata))) 13429ce48e5aSMichal Kubecek return -EFAULT; 13439ce48e5aSMichal Kubecek 13449ce48e5aSMichal Kubecek return 0; 13459ce48e5aSMichal Kubecek } 13469ce48e5aSMichal Kubecek 13479ce48e5aSMichal Kubecek static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) 13489ce48e5aSMichal Kubecek { 13499ce48e5aSMichal Kubecek struct ethtool_eee edata; 13509ce48e5aSMichal Kubecek 13519ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_eee) 13529ce48e5aSMichal Kubecek return -EOPNOTSUPP; 13539ce48e5aSMichal Kubecek 13549ce48e5aSMichal Kubecek if (copy_from_user(&edata, useraddr, sizeof(edata))) 13559ce48e5aSMichal Kubecek return -EFAULT; 13569ce48e5aSMichal Kubecek 13579ce48e5aSMichal Kubecek return dev->ethtool_ops->set_eee(dev, &edata); 13589ce48e5aSMichal Kubecek } 13599ce48e5aSMichal Kubecek 13609ce48e5aSMichal Kubecek static int ethtool_nway_reset(struct net_device *dev) 13619ce48e5aSMichal Kubecek { 13629ce48e5aSMichal Kubecek if (!dev->ethtool_ops->nway_reset) 13639ce48e5aSMichal Kubecek return -EOPNOTSUPP; 13649ce48e5aSMichal Kubecek 13659ce48e5aSMichal Kubecek return dev->ethtool_ops->nway_reset(dev); 13669ce48e5aSMichal Kubecek } 13679ce48e5aSMichal Kubecek 13689ce48e5aSMichal Kubecek static int ethtool_get_link(struct net_device *dev, char __user *useraddr) 13699ce48e5aSMichal Kubecek { 13709ce48e5aSMichal Kubecek struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; 13713d2b847fSMichal Kubecek int link = __ethtool_get_link(dev); 13729ce48e5aSMichal Kubecek 13733d2b847fSMichal Kubecek if (link < 0) 13743d2b847fSMichal Kubecek return link; 13759ce48e5aSMichal Kubecek 13763d2b847fSMichal Kubecek edata.data = link; 13779ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &edata, sizeof(edata))) 13789ce48e5aSMichal Kubecek return -EFAULT; 13799ce48e5aSMichal Kubecek return 0; 13809ce48e5aSMichal Kubecek } 13819ce48e5aSMichal Kubecek 13829ce48e5aSMichal Kubecek static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, 13839ce48e5aSMichal Kubecek int (*getter)(struct net_device *, 13849ce48e5aSMichal Kubecek struct ethtool_eeprom *, u8 *), 13859ce48e5aSMichal Kubecek u32 total_len) 13869ce48e5aSMichal Kubecek { 13879ce48e5aSMichal Kubecek struct ethtool_eeprom eeprom; 13889ce48e5aSMichal Kubecek void __user *userbuf = useraddr + sizeof(eeprom); 13899ce48e5aSMichal Kubecek u32 bytes_remaining; 13909ce48e5aSMichal Kubecek u8 *data; 13919ce48e5aSMichal Kubecek int ret = 0; 13929ce48e5aSMichal Kubecek 13939ce48e5aSMichal Kubecek if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 13949ce48e5aSMichal Kubecek return -EFAULT; 13959ce48e5aSMichal Kubecek 13969ce48e5aSMichal Kubecek /* Check for wrap and zero */ 13979ce48e5aSMichal Kubecek if (eeprom.offset + eeprom.len <= eeprom.offset) 13989ce48e5aSMichal Kubecek return -EINVAL; 13999ce48e5aSMichal Kubecek 14009ce48e5aSMichal Kubecek /* Check for exceeding total eeprom len */ 14019ce48e5aSMichal Kubecek if (eeprom.offset + eeprom.len > total_len) 14029ce48e5aSMichal Kubecek return -EINVAL; 14039ce48e5aSMichal Kubecek 14049ce48e5aSMichal Kubecek data = kmalloc(PAGE_SIZE, GFP_USER); 14059ce48e5aSMichal Kubecek if (!data) 14069ce48e5aSMichal Kubecek return -ENOMEM; 14079ce48e5aSMichal Kubecek 14089ce48e5aSMichal Kubecek bytes_remaining = eeprom.len; 14099ce48e5aSMichal Kubecek while (bytes_remaining > 0) { 14109ce48e5aSMichal Kubecek eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 14119ce48e5aSMichal Kubecek 14129ce48e5aSMichal Kubecek ret = getter(dev, &eeprom, data); 14139ce48e5aSMichal Kubecek if (ret) 14149ce48e5aSMichal Kubecek break; 14159ce48e5aSMichal Kubecek if (copy_to_user(userbuf, data, eeprom.len)) { 14169ce48e5aSMichal Kubecek ret = -EFAULT; 14179ce48e5aSMichal Kubecek break; 14189ce48e5aSMichal Kubecek } 14199ce48e5aSMichal Kubecek userbuf += eeprom.len; 14209ce48e5aSMichal Kubecek eeprom.offset += eeprom.len; 14219ce48e5aSMichal Kubecek bytes_remaining -= eeprom.len; 14229ce48e5aSMichal Kubecek } 14239ce48e5aSMichal Kubecek 14249ce48e5aSMichal Kubecek eeprom.len = userbuf - (useraddr + sizeof(eeprom)); 14259ce48e5aSMichal Kubecek eeprom.offset -= eeprom.len; 14269ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) 14279ce48e5aSMichal Kubecek ret = -EFAULT; 14289ce48e5aSMichal Kubecek 14299ce48e5aSMichal Kubecek kfree(data); 14309ce48e5aSMichal Kubecek return ret; 14319ce48e5aSMichal Kubecek } 14329ce48e5aSMichal Kubecek 14339ce48e5aSMichal Kubecek static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) 14349ce48e5aSMichal Kubecek { 14359ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 14369ce48e5aSMichal Kubecek 14379ce48e5aSMichal Kubecek if (!ops->get_eeprom || !ops->get_eeprom_len || 14389ce48e5aSMichal Kubecek !ops->get_eeprom_len(dev)) 14399ce48e5aSMichal Kubecek return -EOPNOTSUPP; 14409ce48e5aSMichal Kubecek 14419ce48e5aSMichal Kubecek return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, 14429ce48e5aSMichal Kubecek ops->get_eeprom_len(dev)); 14439ce48e5aSMichal Kubecek } 14449ce48e5aSMichal Kubecek 14459ce48e5aSMichal Kubecek static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) 14469ce48e5aSMichal Kubecek { 14479ce48e5aSMichal Kubecek struct ethtool_eeprom eeprom; 14489ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 14499ce48e5aSMichal Kubecek void __user *userbuf = useraddr + sizeof(eeprom); 14509ce48e5aSMichal Kubecek u32 bytes_remaining; 14519ce48e5aSMichal Kubecek u8 *data; 14529ce48e5aSMichal Kubecek int ret = 0; 14539ce48e5aSMichal Kubecek 14549ce48e5aSMichal Kubecek if (!ops->set_eeprom || !ops->get_eeprom_len || 14559ce48e5aSMichal Kubecek !ops->get_eeprom_len(dev)) 14569ce48e5aSMichal Kubecek return -EOPNOTSUPP; 14579ce48e5aSMichal Kubecek 14589ce48e5aSMichal Kubecek if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) 14599ce48e5aSMichal Kubecek return -EFAULT; 14609ce48e5aSMichal Kubecek 14619ce48e5aSMichal Kubecek /* Check for wrap and zero */ 14629ce48e5aSMichal Kubecek if (eeprom.offset + eeprom.len <= eeprom.offset) 14639ce48e5aSMichal Kubecek return -EINVAL; 14649ce48e5aSMichal Kubecek 14659ce48e5aSMichal Kubecek /* Check for exceeding total eeprom len */ 14669ce48e5aSMichal Kubecek if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) 14679ce48e5aSMichal Kubecek return -EINVAL; 14689ce48e5aSMichal Kubecek 14699ce48e5aSMichal Kubecek data = kmalloc(PAGE_SIZE, GFP_USER); 14709ce48e5aSMichal Kubecek if (!data) 14719ce48e5aSMichal Kubecek return -ENOMEM; 14729ce48e5aSMichal Kubecek 14739ce48e5aSMichal Kubecek bytes_remaining = eeprom.len; 14749ce48e5aSMichal Kubecek while (bytes_remaining > 0) { 14759ce48e5aSMichal Kubecek eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); 14769ce48e5aSMichal Kubecek 14779ce48e5aSMichal Kubecek if (copy_from_user(data, userbuf, eeprom.len)) { 14789ce48e5aSMichal Kubecek ret = -EFAULT; 14799ce48e5aSMichal Kubecek break; 14809ce48e5aSMichal Kubecek } 14819ce48e5aSMichal Kubecek ret = ops->set_eeprom(dev, &eeprom, data); 14829ce48e5aSMichal Kubecek if (ret) 14839ce48e5aSMichal Kubecek break; 14849ce48e5aSMichal Kubecek userbuf += eeprom.len; 14859ce48e5aSMichal Kubecek eeprom.offset += eeprom.len; 14869ce48e5aSMichal Kubecek bytes_remaining -= eeprom.len; 14879ce48e5aSMichal Kubecek } 14889ce48e5aSMichal Kubecek 14899ce48e5aSMichal Kubecek kfree(data); 14909ce48e5aSMichal Kubecek return ret; 14919ce48e5aSMichal Kubecek } 14929ce48e5aSMichal Kubecek 14939ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, 14949ce48e5aSMichal Kubecek void __user *useraddr) 14959ce48e5aSMichal Kubecek { 14969ce48e5aSMichal Kubecek struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 14979ce48e5aSMichal Kubecek 14989ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_coalesce) 14999ce48e5aSMichal Kubecek return -EOPNOTSUPP; 15009ce48e5aSMichal Kubecek 15019ce48e5aSMichal Kubecek dev->ethtool_ops->get_coalesce(dev, &coalesce); 15029ce48e5aSMichal Kubecek 15039ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 15049ce48e5aSMichal Kubecek return -EFAULT; 15059ce48e5aSMichal Kubecek return 0; 15069ce48e5aSMichal Kubecek } 15079ce48e5aSMichal Kubecek 15089ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, 15099ce48e5aSMichal Kubecek void __user *useraddr) 15109ce48e5aSMichal Kubecek { 15119ce48e5aSMichal Kubecek struct ethtool_coalesce coalesce; 15129ce48e5aSMichal Kubecek 15139ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_coalesce) 15149ce48e5aSMichal Kubecek return -EOPNOTSUPP; 15159ce48e5aSMichal Kubecek 15169ce48e5aSMichal Kubecek if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) 15179ce48e5aSMichal Kubecek return -EFAULT; 15189ce48e5aSMichal Kubecek 15199ce48e5aSMichal Kubecek return dev->ethtool_ops->set_coalesce(dev, &coalesce); 15209ce48e5aSMichal Kubecek } 15219ce48e5aSMichal Kubecek 15229ce48e5aSMichal Kubecek static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) 15239ce48e5aSMichal Kubecek { 15249ce48e5aSMichal Kubecek struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; 15259ce48e5aSMichal Kubecek 15269ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_ringparam) 15279ce48e5aSMichal Kubecek return -EOPNOTSUPP; 15289ce48e5aSMichal Kubecek 15299ce48e5aSMichal Kubecek dev->ethtool_ops->get_ringparam(dev, &ringparam); 15309ce48e5aSMichal Kubecek 15319ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) 15329ce48e5aSMichal Kubecek return -EFAULT; 15339ce48e5aSMichal Kubecek return 0; 15349ce48e5aSMichal Kubecek } 15359ce48e5aSMichal Kubecek 15369ce48e5aSMichal Kubecek static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) 15379ce48e5aSMichal Kubecek { 15389ce48e5aSMichal Kubecek struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; 15399ce48e5aSMichal Kubecek 15409ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) 15419ce48e5aSMichal Kubecek return -EOPNOTSUPP; 15429ce48e5aSMichal Kubecek 15439ce48e5aSMichal Kubecek if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) 15449ce48e5aSMichal Kubecek return -EFAULT; 15459ce48e5aSMichal Kubecek 15469ce48e5aSMichal Kubecek dev->ethtool_ops->get_ringparam(dev, &max); 15479ce48e5aSMichal Kubecek 15489ce48e5aSMichal Kubecek /* ensure new ring parameters are within the maximums */ 15499ce48e5aSMichal Kubecek if (ringparam.rx_pending > max.rx_max_pending || 15509ce48e5aSMichal Kubecek ringparam.rx_mini_pending > max.rx_mini_max_pending || 15519ce48e5aSMichal Kubecek ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || 15529ce48e5aSMichal Kubecek ringparam.tx_pending > max.tx_max_pending) 15539ce48e5aSMichal Kubecek return -EINVAL; 15549ce48e5aSMichal Kubecek 15559ce48e5aSMichal Kubecek return dev->ethtool_ops->set_ringparam(dev, &ringparam); 15569ce48e5aSMichal Kubecek } 15579ce48e5aSMichal Kubecek 15589ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_get_channels(struct net_device *dev, 15599ce48e5aSMichal Kubecek void __user *useraddr) 15609ce48e5aSMichal Kubecek { 15619ce48e5aSMichal Kubecek struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; 15629ce48e5aSMichal Kubecek 15639ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_channels) 15649ce48e5aSMichal Kubecek return -EOPNOTSUPP; 15659ce48e5aSMichal Kubecek 15669ce48e5aSMichal Kubecek dev->ethtool_ops->get_channels(dev, &channels); 15679ce48e5aSMichal Kubecek 15689ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &channels, sizeof(channels))) 15699ce48e5aSMichal Kubecek return -EFAULT; 15709ce48e5aSMichal Kubecek return 0; 15719ce48e5aSMichal Kubecek } 15729ce48e5aSMichal Kubecek 15739ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_set_channels(struct net_device *dev, 15749ce48e5aSMichal Kubecek void __user *useraddr) 15759ce48e5aSMichal Kubecek { 15769ce48e5aSMichal Kubecek struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; 15779ce48e5aSMichal Kubecek u16 from_channel, to_channel; 15789ce48e5aSMichal Kubecek u32 max_rx_in_use = 0; 15799ce48e5aSMichal Kubecek unsigned int i; 15809ce48e5aSMichal Kubecek 15819ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) 15829ce48e5aSMichal Kubecek return -EOPNOTSUPP; 15839ce48e5aSMichal Kubecek 15849ce48e5aSMichal Kubecek if (copy_from_user(&channels, useraddr, sizeof(channels))) 15859ce48e5aSMichal Kubecek return -EFAULT; 15869ce48e5aSMichal Kubecek 15879ce48e5aSMichal Kubecek dev->ethtool_ops->get_channels(dev, &curr); 15889ce48e5aSMichal Kubecek 15899ce48e5aSMichal Kubecek /* ensure new counts are within the maximums */ 15909ce48e5aSMichal Kubecek if (channels.rx_count > curr.max_rx || 15919ce48e5aSMichal Kubecek channels.tx_count > curr.max_tx || 15929ce48e5aSMichal Kubecek channels.combined_count > curr.max_combined || 15939ce48e5aSMichal Kubecek channels.other_count > curr.max_other) 15949ce48e5aSMichal Kubecek return -EINVAL; 15959ce48e5aSMichal Kubecek 15969ce48e5aSMichal Kubecek /* ensure the new Rx count fits within the configured Rx flow 15979ce48e5aSMichal Kubecek * indirection table settings */ 15989ce48e5aSMichal Kubecek if (netif_is_rxfh_configured(dev) && 15999ce48e5aSMichal Kubecek !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) && 16009ce48e5aSMichal Kubecek (channels.combined_count + channels.rx_count) <= max_rx_in_use) 16019ce48e5aSMichal Kubecek return -EINVAL; 16029ce48e5aSMichal Kubecek 16039ce48e5aSMichal Kubecek /* Disabling channels, query zero-copy AF_XDP sockets */ 16049ce48e5aSMichal Kubecek from_channel = channels.combined_count + 16059ce48e5aSMichal Kubecek min(channels.rx_count, channels.tx_count); 16069ce48e5aSMichal Kubecek to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); 16079ce48e5aSMichal Kubecek for (i = from_channel; i < to_channel; i++) 16089ce48e5aSMichal Kubecek if (xdp_get_umem_from_qid(dev, i)) 16099ce48e5aSMichal Kubecek return -EINVAL; 16109ce48e5aSMichal Kubecek 16119ce48e5aSMichal Kubecek return dev->ethtool_ops->set_channels(dev, &channels); 16129ce48e5aSMichal Kubecek } 16139ce48e5aSMichal Kubecek 16149ce48e5aSMichal Kubecek static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) 16159ce48e5aSMichal Kubecek { 16169ce48e5aSMichal Kubecek struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; 16179ce48e5aSMichal Kubecek 16189ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_pauseparam) 16199ce48e5aSMichal Kubecek return -EOPNOTSUPP; 16209ce48e5aSMichal Kubecek 16219ce48e5aSMichal Kubecek dev->ethtool_ops->get_pauseparam(dev, &pauseparam); 16229ce48e5aSMichal Kubecek 16239ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) 16249ce48e5aSMichal Kubecek return -EFAULT; 16259ce48e5aSMichal Kubecek return 0; 16269ce48e5aSMichal Kubecek } 16279ce48e5aSMichal Kubecek 16289ce48e5aSMichal Kubecek static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) 16299ce48e5aSMichal Kubecek { 16309ce48e5aSMichal Kubecek struct ethtool_pauseparam pauseparam; 16319ce48e5aSMichal Kubecek 16329ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_pauseparam) 16339ce48e5aSMichal Kubecek return -EOPNOTSUPP; 16349ce48e5aSMichal Kubecek 16359ce48e5aSMichal Kubecek if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) 16369ce48e5aSMichal Kubecek return -EFAULT; 16379ce48e5aSMichal Kubecek 16389ce48e5aSMichal Kubecek return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); 16399ce48e5aSMichal Kubecek } 16409ce48e5aSMichal Kubecek 16419ce48e5aSMichal Kubecek static int ethtool_self_test(struct net_device *dev, char __user *useraddr) 16429ce48e5aSMichal Kubecek { 16439ce48e5aSMichal Kubecek struct ethtool_test test; 16449ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 16459ce48e5aSMichal Kubecek u64 *data; 16469ce48e5aSMichal Kubecek int ret, test_len; 16479ce48e5aSMichal Kubecek 16489ce48e5aSMichal Kubecek if (!ops->self_test || !ops->get_sset_count) 16499ce48e5aSMichal Kubecek return -EOPNOTSUPP; 16509ce48e5aSMichal Kubecek 16519ce48e5aSMichal Kubecek test_len = ops->get_sset_count(dev, ETH_SS_TEST); 16529ce48e5aSMichal Kubecek if (test_len < 0) 16539ce48e5aSMichal Kubecek return test_len; 16549ce48e5aSMichal Kubecek WARN_ON(test_len == 0); 16559ce48e5aSMichal Kubecek 16569ce48e5aSMichal Kubecek if (copy_from_user(&test, useraddr, sizeof(test))) 16579ce48e5aSMichal Kubecek return -EFAULT; 16589ce48e5aSMichal Kubecek 16599ce48e5aSMichal Kubecek test.len = test_len; 16609ce48e5aSMichal Kubecek data = kmalloc_array(test_len, sizeof(u64), GFP_USER); 16619ce48e5aSMichal Kubecek if (!data) 16629ce48e5aSMichal Kubecek return -ENOMEM; 16639ce48e5aSMichal Kubecek 16649ce48e5aSMichal Kubecek ops->self_test(dev, &test, data); 16659ce48e5aSMichal Kubecek 16669ce48e5aSMichal Kubecek ret = -EFAULT; 16679ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &test, sizeof(test))) 16689ce48e5aSMichal Kubecek goto out; 16699ce48e5aSMichal Kubecek useraddr += sizeof(test); 16709ce48e5aSMichal Kubecek if (copy_to_user(useraddr, data, test.len * sizeof(u64))) 16719ce48e5aSMichal Kubecek goto out; 16729ce48e5aSMichal Kubecek ret = 0; 16739ce48e5aSMichal Kubecek 16749ce48e5aSMichal Kubecek out: 16759ce48e5aSMichal Kubecek kfree(data); 16769ce48e5aSMichal Kubecek return ret; 16779ce48e5aSMichal Kubecek } 16789ce48e5aSMichal Kubecek 16799ce48e5aSMichal Kubecek static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) 16809ce48e5aSMichal Kubecek { 16819ce48e5aSMichal Kubecek struct ethtool_gstrings gstrings; 16829ce48e5aSMichal Kubecek u8 *data; 16839ce48e5aSMichal Kubecek int ret; 16849ce48e5aSMichal Kubecek 16859ce48e5aSMichal Kubecek if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) 16869ce48e5aSMichal Kubecek return -EFAULT; 16879ce48e5aSMichal Kubecek 16889ce48e5aSMichal Kubecek ret = __ethtool_get_sset_count(dev, gstrings.string_set); 16899ce48e5aSMichal Kubecek if (ret < 0) 16909ce48e5aSMichal Kubecek return ret; 16919ce48e5aSMichal Kubecek if (ret > S32_MAX / ETH_GSTRING_LEN) 16929ce48e5aSMichal Kubecek return -ENOMEM; 16939ce48e5aSMichal Kubecek WARN_ON_ONCE(!ret); 16949ce48e5aSMichal Kubecek 16959ce48e5aSMichal Kubecek gstrings.len = ret; 16969ce48e5aSMichal Kubecek 16979ce48e5aSMichal Kubecek if (gstrings.len) { 16989ce48e5aSMichal Kubecek data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); 16999ce48e5aSMichal Kubecek if (!data) 17009ce48e5aSMichal Kubecek return -ENOMEM; 17019ce48e5aSMichal Kubecek 17029ce48e5aSMichal Kubecek __ethtool_get_strings(dev, gstrings.string_set, data); 17039ce48e5aSMichal Kubecek } else { 17049ce48e5aSMichal Kubecek data = NULL; 17059ce48e5aSMichal Kubecek } 17069ce48e5aSMichal Kubecek 17079ce48e5aSMichal Kubecek ret = -EFAULT; 17089ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) 17099ce48e5aSMichal Kubecek goto out; 17109ce48e5aSMichal Kubecek useraddr += sizeof(gstrings); 17119ce48e5aSMichal Kubecek if (gstrings.len && 17129ce48e5aSMichal Kubecek copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) 17139ce48e5aSMichal Kubecek goto out; 17149ce48e5aSMichal Kubecek ret = 0; 17159ce48e5aSMichal Kubecek 17169ce48e5aSMichal Kubecek out: 17179ce48e5aSMichal Kubecek vfree(data); 17189ce48e5aSMichal Kubecek return ret; 17199ce48e5aSMichal Kubecek } 17209ce48e5aSMichal Kubecek 17219ce48e5aSMichal Kubecek static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) 17229ce48e5aSMichal Kubecek { 17239ce48e5aSMichal Kubecek struct ethtool_value id; 17249ce48e5aSMichal Kubecek static bool busy; 17259ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 17269ce48e5aSMichal Kubecek int rc; 17279ce48e5aSMichal Kubecek 17289ce48e5aSMichal Kubecek if (!ops->set_phys_id) 17299ce48e5aSMichal Kubecek return -EOPNOTSUPP; 17309ce48e5aSMichal Kubecek 17319ce48e5aSMichal Kubecek if (busy) 17329ce48e5aSMichal Kubecek return -EBUSY; 17339ce48e5aSMichal Kubecek 17349ce48e5aSMichal Kubecek if (copy_from_user(&id, useraddr, sizeof(id))) 17359ce48e5aSMichal Kubecek return -EFAULT; 17369ce48e5aSMichal Kubecek 17379ce48e5aSMichal Kubecek rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); 17389ce48e5aSMichal Kubecek if (rc < 0) 17399ce48e5aSMichal Kubecek return rc; 17409ce48e5aSMichal Kubecek 17419ce48e5aSMichal Kubecek /* Drop the RTNL lock while waiting, but prevent reentry or 17429ce48e5aSMichal Kubecek * removal of the device. 17439ce48e5aSMichal Kubecek */ 17449ce48e5aSMichal Kubecek busy = true; 17459ce48e5aSMichal Kubecek dev_hold(dev); 17469ce48e5aSMichal Kubecek rtnl_unlock(); 17479ce48e5aSMichal Kubecek 17489ce48e5aSMichal Kubecek if (rc == 0) { 17499ce48e5aSMichal Kubecek /* Driver will handle this itself */ 17509ce48e5aSMichal Kubecek schedule_timeout_interruptible( 17519ce48e5aSMichal Kubecek id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); 17529ce48e5aSMichal Kubecek } else { 17539ce48e5aSMichal Kubecek /* Driver expects to be called at twice the frequency in rc */ 17549ce48e5aSMichal Kubecek int n = rc * 2, i, interval = HZ / n; 17559ce48e5aSMichal Kubecek 17569ce48e5aSMichal Kubecek /* Count down seconds */ 17579ce48e5aSMichal Kubecek do { 17589ce48e5aSMichal Kubecek /* Count down iterations per second */ 17599ce48e5aSMichal Kubecek i = n; 17609ce48e5aSMichal Kubecek do { 17619ce48e5aSMichal Kubecek rtnl_lock(); 17629ce48e5aSMichal Kubecek rc = ops->set_phys_id(dev, 17639ce48e5aSMichal Kubecek (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); 17649ce48e5aSMichal Kubecek rtnl_unlock(); 17659ce48e5aSMichal Kubecek if (rc) 17669ce48e5aSMichal Kubecek break; 17679ce48e5aSMichal Kubecek schedule_timeout_interruptible(interval); 17689ce48e5aSMichal Kubecek } while (!signal_pending(current) && --i != 0); 17699ce48e5aSMichal Kubecek } while (!signal_pending(current) && 17709ce48e5aSMichal Kubecek (id.data == 0 || --id.data != 0)); 17719ce48e5aSMichal Kubecek } 17729ce48e5aSMichal Kubecek 17739ce48e5aSMichal Kubecek rtnl_lock(); 17749ce48e5aSMichal Kubecek dev_put(dev); 17759ce48e5aSMichal Kubecek busy = false; 17769ce48e5aSMichal Kubecek 17779ce48e5aSMichal Kubecek (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); 17789ce48e5aSMichal Kubecek return rc; 17799ce48e5aSMichal Kubecek } 17809ce48e5aSMichal Kubecek 17819ce48e5aSMichal Kubecek static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) 17829ce48e5aSMichal Kubecek { 17839ce48e5aSMichal Kubecek struct ethtool_stats stats; 17849ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 17859ce48e5aSMichal Kubecek u64 *data; 17869ce48e5aSMichal Kubecek int ret, n_stats; 17879ce48e5aSMichal Kubecek 17889ce48e5aSMichal Kubecek if (!ops->get_ethtool_stats || !ops->get_sset_count) 17899ce48e5aSMichal Kubecek return -EOPNOTSUPP; 17909ce48e5aSMichal Kubecek 17919ce48e5aSMichal Kubecek n_stats = ops->get_sset_count(dev, ETH_SS_STATS); 17929ce48e5aSMichal Kubecek if (n_stats < 0) 17939ce48e5aSMichal Kubecek return n_stats; 17949ce48e5aSMichal Kubecek if (n_stats > S32_MAX / sizeof(u64)) 17959ce48e5aSMichal Kubecek return -ENOMEM; 17969ce48e5aSMichal Kubecek WARN_ON_ONCE(!n_stats); 17979ce48e5aSMichal Kubecek if (copy_from_user(&stats, useraddr, sizeof(stats))) 17989ce48e5aSMichal Kubecek return -EFAULT; 17999ce48e5aSMichal Kubecek 18009ce48e5aSMichal Kubecek stats.n_stats = n_stats; 18019ce48e5aSMichal Kubecek 18029ce48e5aSMichal Kubecek if (n_stats) { 18039ce48e5aSMichal Kubecek data = vzalloc(array_size(n_stats, sizeof(u64))); 18049ce48e5aSMichal Kubecek if (!data) 18059ce48e5aSMichal Kubecek return -ENOMEM; 18069ce48e5aSMichal Kubecek ops->get_ethtool_stats(dev, &stats, data); 18079ce48e5aSMichal Kubecek } else { 18089ce48e5aSMichal Kubecek data = NULL; 18099ce48e5aSMichal Kubecek } 18109ce48e5aSMichal Kubecek 18119ce48e5aSMichal Kubecek ret = -EFAULT; 18129ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &stats, sizeof(stats))) 18139ce48e5aSMichal Kubecek goto out; 18149ce48e5aSMichal Kubecek useraddr += sizeof(stats); 18159ce48e5aSMichal Kubecek if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64))) 18169ce48e5aSMichal Kubecek goto out; 18179ce48e5aSMichal Kubecek ret = 0; 18189ce48e5aSMichal Kubecek 18199ce48e5aSMichal Kubecek out: 18209ce48e5aSMichal Kubecek vfree(data); 18219ce48e5aSMichal Kubecek return ret; 18229ce48e5aSMichal Kubecek } 18239ce48e5aSMichal Kubecek 18249ce48e5aSMichal Kubecek static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) 18259ce48e5aSMichal Kubecek { 18269ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 18279ce48e5aSMichal Kubecek struct phy_device *phydev = dev->phydev; 18289ce48e5aSMichal Kubecek struct ethtool_stats stats; 18299ce48e5aSMichal Kubecek u64 *data; 18309ce48e5aSMichal Kubecek int ret, n_stats; 18319ce48e5aSMichal Kubecek 18329ce48e5aSMichal Kubecek if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count)) 18339ce48e5aSMichal Kubecek return -EOPNOTSUPP; 18349ce48e5aSMichal Kubecek 18359ce48e5aSMichal Kubecek if (dev->phydev && !ops->get_ethtool_phy_stats) 18369ce48e5aSMichal Kubecek n_stats = phy_ethtool_get_sset_count(dev->phydev); 18379ce48e5aSMichal Kubecek else 18389ce48e5aSMichal Kubecek n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); 18399ce48e5aSMichal Kubecek if (n_stats < 0) 18409ce48e5aSMichal Kubecek return n_stats; 18419ce48e5aSMichal Kubecek if (n_stats > S32_MAX / sizeof(u64)) 18429ce48e5aSMichal Kubecek return -ENOMEM; 18439ce48e5aSMichal Kubecek WARN_ON_ONCE(!n_stats); 18449ce48e5aSMichal Kubecek 18459ce48e5aSMichal Kubecek if (copy_from_user(&stats, useraddr, sizeof(stats))) 18469ce48e5aSMichal Kubecek return -EFAULT; 18479ce48e5aSMichal Kubecek 18489ce48e5aSMichal Kubecek stats.n_stats = n_stats; 18499ce48e5aSMichal Kubecek 18509ce48e5aSMichal Kubecek if (n_stats) { 18519ce48e5aSMichal Kubecek data = vzalloc(array_size(n_stats, sizeof(u64))); 18529ce48e5aSMichal Kubecek if (!data) 18539ce48e5aSMichal Kubecek return -ENOMEM; 18549ce48e5aSMichal Kubecek 18559ce48e5aSMichal Kubecek if (dev->phydev && !ops->get_ethtool_phy_stats) { 18569ce48e5aSMichal Kubecek ret = phy_ethtool_get_stats(dev->phydev, &stats, data); 18579ce48e5aSMichal Kubecek if (ret < 0) 18589ce48e5aSMichal Kubecek goto out; 18599ce48e5aSMichal Kubecek } else { 18609ce48e5aSMichal Kubecek ops->get_ethtool_phy_stats(dev, &stats, data); 18619ce48e5aSMichal Kubecek } 18629ce48e5aSMichal Kubecek } else { 18639ce48e5aSMichal Kubecek data = NULL; 18649ce48e5aSMichal Kubecek } 18659ce48e5aSMichal Kubecek 18669ce48e5aSMichal Kubecek ret = -EFAULT; 18679ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &stats, sizeof(stats))) 18689ce48e5aSMichal Kubecek goto out; 18699ce48e5aSMichal Kubecek useraddr += sizeof(stats); 18709ce48e5aSMichal Kubecek if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64))) 18719ce48e5aSMichal Kubecek goto out; 18729ce48e5aSMichal Kubecek ret = 0; 18739ce48e5aSMichal Kubecek 18749ce48e5aSMichal Kubecek out: 18759ce48e5aSMichal Kubecek vfree(data); 18769ce48e5aSMichal Kubecek return ret; 18779ce48e5aSMichal Kubecek } 18789ce48e5aSMichal Kubecek 18799ce48e5aSMichal Kubecek static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) 18809ce48e5aSMichal Kubecek { 18819ce48e5aSMichal Kubecek struct ethtool_perm_addr epaddr; 18829ce48e5aSMichal Kubecek 18839ce48e5aSMichal Kubecek if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) 18849ce48e5aSMichal Kubecek return -EFAULT; 18859ce48e5aSMichal Kubecek 18869ce48e5aSMichal Kubecek if (epaddr.size < dev->addr_len) 18879ce48e5aSMichal Kubecek return -ETOOSMALL; 18889ce48e5aSMichal Kubecek epaddr.size = dev->addr_len; 18899ce48e5aSMichal Kubecek 18909ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) 18919ce48e5aSMichal Kubecek return -EFAULT; 18929ce48e5aSMichal Kubecek useraddr += sizeof(epaddr); 18939ce48e5aSMichal Kubecek if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) 18949ce48e5aSMichal Kubecek return -EFAULT; 18959ce48e5aSMichal Kubecek return 0; 18969ce48e5aSMichal Kubecek } 18979ce48e5aSMichal Kubecek 18989ce48e5aSMichal Kubecek static int ethtool_get_value(struct net_device *dev, char __user *useraddr, 18999ce48e5aSMichal Kubecek u32 cmd, u32 (*actor)(struct net_device *)) 19009ce48e5aSMichal Kubecek { 19019ce48e5aSMichal Kubecek struct ethtool_value edata = { .cmd = cmd }; 19029ce48e5aSMichal Kubecek 19039ce48e5aSMichal Kubecek if (!actor) 19049ce48e5aSMichal Kubecek return -EOPNOTSUPP; 19059ce48e5aSMichal Kubecek 19069ce48e5aSMichal Kubecek edata.data = actor(dev); 19079ce48e5aSMichal Kubecek 19089ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &edata, sizeof(edata))) 19099ce48e5aSMichal Kubecek return -EFAULT; 19109ce48e5aSMichal Kubecek return 0; 19119ce48e5aSMichal Kubecek } 19129ce48e5aSMichal Kubecek 19139ce48e5aSMichal Kubecek static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, 19149ce48e5aSMichal Kubecek void (*actor)(struct net_device *, u32)) 19159ce48e5aSMichal Kubecek { 19169ce48e5aSMichal Kubecek struct ethtool_value edata; 19179ce48e5aSMichal Kubecek 19189ce48e5aSMichal Kubecek if (!actor) 19199ce48e5aSMichal Kubecek return -EOPNOTSUPP; 19209ce48e5aSMichal Kubecek 19219ce48e5aSMichal Kubecek if (copy_from_user(&edata, useraddr, sizeof(edata))) 19229ce48e5aSMichal Kubecek return -EFAULT; 19239ce48e5aSMichal Kubecek 19249ce48e5aSMichal Kubecek actor(dev, edata.data); 19259ce48e5aSMichal Kubecek return 0; 19269ce48e5aSMichal Kubecek } 19279ce48e5aSMichal Kubecek 19289ce48e5aSMichal Kubecek static int ethtool_set_value(struct net_device *dev, char __user *useraddr, 19299ce48e5aSMichal Kubecek int (*actor)(struct net_device *, u32)) 19309ce48e5aSMichal Kubecek { 19319ce48e5aSMichal Kubecek struct ethtool_value edata; 19329ce48e5aSMichal Kubecek 19339ce48e5aSMichal Kubecek if (!actor) 19349ce48e5aSMichal Kubecek return -EOPNOTSUPP; 19359ce48e5aSMichal Kubecek 19369ce48e5aSMichal Kubecek if (copy_from_user(&edata, useraddr, sizeof(edata))) 19379ce48e5aSMichal Kubecek return -EFAULT; 19389ce48e5aSMichal Kubecek 19399ce48e5aSMichal Kubecek return actor(dev, edata.data); 19409ce48e5aSMichal Kubecek } 19419ce48e5aSMichal Kubecek 19429ce48e5aSMichal Kubecek static noinline_for_stack int ethtool_flash_device(struct net_device *dev, 19439ce48e5aSMichal Kubecek char __user *useraddr) 19449ce48e5aSMichal Kubecek { 19459ce48e5aSMichal Kubecek struct ethtool_flash efl; 19469ce48e5aSMichal Kubecek 19479ce48e5aSMichal Kubecek if (copy_from_user(&efl, useraddr, sizeof(efl))) 19489ce48e5aSMichal Kubecek return -EFAULT; 19499ce48e5aSMichal Kubecek efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; 19509ce48e5aSMichal Kubecek 19519ce48e5aSMichal Kubecek if (!dev->ethtool_ops->flash_device) 19529ce48e5aSMichal Kubecek return devlink_compat_flash_update(dev, efl.data); 19539ce48e5aSMichal Kubecek 19549ce48e5aSMichal Kubecek return dev->ethtool_ops->flash_device(dev, &efl); 19559ce48e5aSMichal Kubecek } 19569ce48e5aSMichal Kubecek 19579ce48e5aSMichal Kubecek static int ethtool_set_dump(struct net_device *dev, 19589ce48e5aSMichal Kubecek void __user *useraddr) 19599ce48e5aSMichal Kubecek { 19609ce48e5aSMichal Kubecek struct ethtool_dump dump; 19619ce48e5aSMichal Kubecek 19629ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_dump) 19639ce48e5aSMichal Kubecek return -EOPNOTSUPP; 19649ce48e5aSMichal Kubecek 19659ce48e5aSMichal Kubecek if (copy_from_user(&dump, useraddr, sizeof(dump))) 19669ce48e5aSMichal Kubecek return -EFAULT; 19679ce48e5aSMichal Kubecek 19689ce48e5aSMichal Kubecek return dev->ethtool_ops->set_dump(dev, &dump); 19699ce48e5aSMichal Kubecek } 19709ce48e5aSMichal Kubecek 19719ce48e5aSMichal Kubecek static int ethtool_get_dump_flag(struct net_device *dev, 19729ce48e5aSMichal Kubecek void __user *useraddr) 19739ce48e5aSMichal Kubecek { 19749ce48e5aSMichal Kubecek int ret; 19759ce48e5aSMichal Kubecek struct ethtool_dump dump; 19769ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 19779ce48e5aSMichal Kubecek 19789ce48e5aSMichal Kubecek if (!ops->get_dump_flag) 19799ce48e5aSMichal Kubecek return -EOPNOTSUPP; 19809ce48e5aSMichal Kubecek 19819ce48e5aSMichal Kubecek if (copy_from_user(&dump, useraddr, sizeof(dump))) 19829ce48e5aSMichal Kubecek return -EFAULT; 19839ce48e5aSMichal Kubecek 19849ce48e5aSMichal Kubecek ret = ops->get_dump_flag(dev, &dump); 19859ce48e5aSMichal Kubecek if (ret) 19869ce48e5aSMichal Kubecek return ret; 19879ce48e5aSMichal Kubecek 19889ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &dump, sizeof(dump))) 19899ce48e5aSMichal Kubecek return -EFAULT; 19909ce48e5aSMichal Kubecek return 0; 19919ce48e5aSMichal Kubecek } 19929ce48e5aSMichal Kubecek 19939ce48e5aSMichal Kubecek static int ethtool_get_dump_data(struct net_device *dev, 19949ce48e5aSMichal Kubecek void __user *useraddr) 19959ce48e5aSMichal Kubecek { 19969ce48e5aSMichal Kubecek int ret; 19979ce48e5aSMichal Kubecek __u32 len; 19989ce48e5aSMichal Kubecek struct ethtool_dump dump, tmp; 19999ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 20009ce48e5aSMichal Kubecek void *data = NULL; 20019ce48e5aSMichal Kubecek 20029ce48e5aSMichal Kubecek if (!ops->get_dump_data || !ops->get_dump_flag) 20039ce48e5aSMichal Kubecek return -EOPNOTSUPP; 20049ce48e5aSMichal Kubecek 20059ce48e5aSMichal Kubecek if (copy_from_user(&dump, useraddr, sizeof(dump))) 20069ce48e5aSMichal Kubecek return -EFAULT; 20079ce48e5aSMichal Kubecek 20089ce48e5aSMichal Kubecek memset(&tmp, 0, sizeof(tmp)); 20099ce48e5aSMichal Kubecek tmp.cmd = ETHTOOL_GET_DUMP_FLAG; 20109ce48e5aSMichal Kubecek ret = ops->get_dump_flag(dev, &tmp); 20119ce48e5aSMichal Kubecek if (ret) 20129ce48e5aSMichal Kubecek return ret; 20139ce48e5aSMichal Kubecek 20149ce48e5aSMichal Kubecek len = min(tmp.len, dump.len); 20159ce48e5aSMichal Kubecek if (!len) 20169ce48e5aSMichal Kubecek return -EFAULT; 20179ce48e5aSMichal Kubecek 20189ce48e5aSMichal Kubecek /* Don't ever let the driver think there's more space available 20199ce48e5aSMichal Kubecek * than it requested with .get_dump_flag(). 20209ce48e5aSMichal Kubecek */ 20219ce48e5aSMichal Kubecek dump.len = len; 20229ce48e5aSMichal Kubecek 20239ce48e5aSMichal Kubecek /* Always allocate enough space to hold the whole thing so that the 20249ce48e5aSMichal Kubecek * driver does not need to check the length and bother with partial 20259ce48e5aSMichal Kubecek * dumping. 20269ce48e5aSMichal Kubecek */ 20279ce48e5aSMichal Kubecek data = vzalloc(tmp.len); 20289ce48e5aSMichal Kubecek if (!data) 20299ce48e5aSMichal Kubecek return -ENOMEM; 20309ce48e5aSMichal Kubecek ret = ops->get_dump_data(dev, &dump, data); 20319ce48e5aSMichal Kubecek if (ret) 20329ce48e5aSMichal Kubecek goto out; 20339ce48e5aSMichal Kubecek 20349ce48e5aSMichal Kubecek /* There are two sane possibilities: 20359ce48e5aSMichal Kubecek * 1. The driver's .get_dump_data() does not touch dump.len. 20369ce48e5aSMichal Kubecek * 2. Or it may set dump.len to how much it really writes, which 20379ce48e5aSMichal Kubecek * should be tmp.len (or len if it can do a partial dump). 20389ce48e5aSMichal Kubecek * In any case respond to userspace with the actual length of data 20399ce48e5aSMichal Kubecek * it's receiving. 20409ce48e5aSMichal Kubecek */ 20419ce48e5aSMichal Kubecek WARN_ON(dump.len != len && dump.len != tmp.len); 20429ce48e5aSMichal Kubecek dump.len = len; 20439ce48e5aSMichal Kubecek 20449ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &dump, sizeof(dump))) { 20459ce48e5aSMichal Kubecek ret = -EFAULT; 20469ce48e5aSMichal Kubecek goto out; 20479ce48e5aSMichal Kubecek } 20489ce48e5aSMichal Kubecek useraddr += offsetof(struct ethtool_dump, data); 20499ce48e5aSMichal Kubecek if (copy_to_user(useraddr, data, len)) 20509ce48e5aSMichal Kubecek ret = -EFAULT; 20519ce48e5aSMichal Kubecek out: 20529ce48e5aSMichal Kubecek vfree(data); 20539ce48e5aSMichal Kubecek return ret; 20549ce48e5aSMichal Kubecek } 20559ce48e5aSMichal Kubecek 20569ce48e5aSMichal Kubecek static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) 20579ce48e5aSMichal Kubecek { 20589ce48e5aSMichal Kubecek int err = 0; 20599ce48e5aSMichal Kubecek struct ethtool_ts_info info; 20609ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 20619ce48e5aSMichal Kubecek struct phy_device *phydev = dev->phydev; 20629ce48e5aSMichal Kubecek 20639ce48e5aSMichal Kubecek memset(&info, 0, sizeof(info)); 20649ce48e5aSMichal Kubecek info.cmd = ETHTOOL_GET_TS_INFO; 20659ce48e5aSMichal Kubecek 20667774ee23SRichard Cochran if (phy_has_tsinfo(phydev)) { 20677774ee23SRichard Cochran err = phy_ts_info(phydev, &info); 20689ce48e5aSMichal Kubecek } else if (ops->get_ts_info) { 20699ce48e5aSMichal Kubecek err = ops->get_ts_info(dev, &info); 20709ce48e5aSMichal Kubecek } else { 20719ce48e5aSMichal Kubecek info.so_timestamping = 20729ce48e5aSMichal Kubecek SOF_TIMESTAMPING_RX_SOFTWARE | 20739ce48e5aSMichal Kubecek SOF_TIMESTAMPING_SOFTWARE; 20749ce48e5aSMichal Kubecek info.phc_index = -1; 20759ce48e5aSMichal Kubecek } 20769ce48e5aSMichal Kubecek 20779ce48e5aSMichal Kubecek if (err) 20789ce48e5aSMichal Kubecek return err; 20799ce48e5aSMichal Kubecek 20809ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &info, sizeof(info))) 20819ce48e5aSMichal Kubecek err = -EFAULT; 20829ce48e5aSMichal Kubecek 20839ce48e5aSMichal Kubecek return err; 20849ce48e5aSMichal Kubecek } 20859ce48e5aSMichal Kubecek 20869ce48e5aSMichal Kubecek static int __ethtool_get_module_info(struct net_device *dev, 20879ce48e5aSMichal Kubecek struct ethtool_modinfo *modinfo) 20889ce48e5aSMichal Kubecek { 20899ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 20909ce48e5aSMichal Kubecek struct phy_device *phydev = dev->phydev; 20919ce48e5aSMichal Kubecek 20929ce48e5aSMichal Kubecek if (dev->sfp_bus) 20939ce48e5aSMichal Kubecek return sfp_get_module_info(dev->sfp_bus, modinfo); 20949ce48e5aSMichal Kubecek 20959ce48e5aSMichal Kubecek if (phydev && phydev->drv && phydev->drv->module_info) 20969ce48e5aSMichal Kubecek return phydev->drv->module_info(phydev, modinfo); 20979ce48e5aSMichal Kubecek 20989ce48e5aSMichal Kubecek if (ops->get_module_info) 20999ce48e5aSMichal Kubecek return ops->get_module_info(dev, modinfo); 21009ce48e5aSMichal Kubecek 21019ce48e5aSMichal Kubecek return -EOPNOTSUPP; 21029ce48e5aSMichal Kubecek } 21039ce48e5aSMichal Kubecek 21049ce48e5aSMichal Kubecek static int ethtool_get_module_info(struct net_device *dev, 21059ce48e5aSMichal Kubecek void __user *useraddr) 21069ce48e5aSMichal Kubecek { 21079ce48e5aSMichal Kubecek int ret; 21089ce48e5aSMichal Kubecek struct ethtool_modinfo modinfo; 21099ce48e5aSMichal Kubecek 21109ce48e5aSMichal Kubecek if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) 21119ce48e5aSMichal Kubecek return -EFAULT; 21129ce48e5aSMichal Kubecek 21139ce48e5aSMichal Kubecek ret = __ethtool_get_module_info(dev, &modinfo); 21149ce48e5aSMichal Kubecek if (ret) 21159ce48e5aSMichal Kubecek return ret; 21169ce48e5aSMichal Kubecek 21179ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) 21189ce48e5aSMichal Kubecek return -EFAULT; 21199ce48e5aSMichal Kubecek 21209ce48e5aSMichal Kubecek return 0; 21219ce48e5aSMichal Kubecek } 21229ce48e5aSMichal Kubecek 21239ce48e5aSMichal Kubecek static int __ethtool_get_module_eeprom(struct net_device *dev, 21249ce48e5aSMichal Kubecek struct ethtool_eeprom *ee, u8 *data) 21259ce48e5aSMichal Kubecek { 21269ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 21279ce48e5aSMichal Kubecek struct phy_device *phydev = dev->phydev; 21289ce48e5aSMichal Kubecek 21299ce48e5aSMichal Kubecek if (dev->sfp_bus) 21309ce48e5aSMichal Kubecek return sfp_get_module_eeprom(dev->sfp_bus, ee, data); 21319ce48e5aSMichal Kubecek 21329ce48e5aSMichal Kubecek if (phydev && phydev->drv && phydev->drv->module_eeprom) 21339ce48e5aSMichal Kubecek return phydev->drv->module_eeprom(phydev, ee, data); 21349ce48e5aSMichal Kubecek 21359ce48e5aSMichal Kubecek if (ops->get_module_eeprom) 21369ce48e5aSMichal Kubecek return ops->get_module_eeprom(dev, ee, data); 21379ce48e5aSMichal Kubecek 21389ce48e5aSMichal Kubecek return -EOPNOTSUPP; 21399ce48e5aSMichal Kubecek } 21409ce48e5aSMichal Kubecek 21419ce48e5aSMichal Kubecek static int ethtool_get_module_eeprom(struct net_device *dev, 21429ce48e5aSMichal Kubecek void __user *useraddr) 21439ce48e5aSMichal Kubecek { 21449ce48e5aSMichal Kubecek int ret; 21459ce48e5aSMichal Kubecek struct ethtool_modinfo modinfo; 21469ce48e5aSMichal Kubecek 21479ce48e5aSMichal Kubecek ret = __ethtool_get_module_info(dev, &modinfo); 21489ce48e5aSMichal Kubecek if (ret) 21499ce48e5aSMichal Kubecek return ret; 21509ce48e5aSMichal Kubecek 21519ce48e5aSMichal Kubecek return ethtool_get_any_eeprom(dev, useraddr, 21529ce48e5aSMichal Kubecek __ethtool_get_module_eeprom, 21539ce48e5aSMichal Kubecek modinfo.eeprom_len); 21549ce48e5aSMichal Kubecek } 21559ce48e5aSMichal Kubecek 21569ce48e5aSMichal Kubecek static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) 21579ce48e5aSMichal Kubecek { 21589ce48e5aSMichal Kubecek switch (tuna->id) { 21599ce48e5aSMichal Kubecek case ETHTOOL_RX_COPYBREAK: 21609ce48e5aSMichal Kubecek case ETHTOOL_TX_COPYBREAK: 21619ce48e5aSMichal Kubecek if (tuna->len != sizeof(u32) || 21629ce48e5aSMichal Kubecek tuna->type_id != ETHTOOL_TUNABLE_U32) 21639ce48e5aSMichal Kubecek return -EINVAL; 21649ce48e5aSMichal Kubecek break; 21659ce48e5aSMichal Kubecek case ETHTOOL_PFC_PREVENTION_TOUT: 21669ce48e5aSMichal Kubecek if (tuna->len != sizeof(u16) || 21679ce48e5aSMichal Kubecek tuna->type_id != ETHTOOL_TUNABLE_U16) 21689ce48e5aSMichal Kubecek return -EINVAL; 21699ce48e5aSMichal Kubecek break; 21709ce48e5aSMichal Kubecek default: 21719ce48e5aSMichal Kubecek return -EINVAL; 21729ce48e5aSMichal Kubecek } 21739ce48e5aSMichal Kubecek 21749ce48e5aSMichal Kubecek return 0; 21759ce48e5aSMichal Kubecek } 21769ce48e5aSMichal Kubecek 21779ce48e5aSMichal Kubecek static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) 21789ce48e5aSMichal Kubecek { 21799ce48e5aSMichal Kubecek int ret; 21809ce48e5aSMichal Kubecek struct ethtool_tunable tuna; 21819ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 21829ce48e5aSMichal Kubecek void *data; 21839ce48e5aSMichal Kubecek 21849ce48e5aSMichal Kubecek if (!ops->get_tunable) 21859ce48e5aSMichal Kubecek return -EOPNOTSUPP; 21869ce48e5aSMichal Kubecek if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 21879ce48e5aSMichal Kubecek return -EFAULT; 21889ce48e5aSMichal Kubecek ret = ethtool_tunable_valid(&tuna); 21899ce48e5aSMichal Kubecek if (ret) 21909ce48e5aSMichal Kubecek return ret; 21919ce48e5aSMichal Kubecek data = kmalloc(tuna.len, GFP_USER); 21929ce48e5aSMichal Kubecek if (!data) 21939ce48e5aSMichal Kubecek return -ENOMEM; 21949ce48e5aSMichal Kubecek ret = ops->get_tunable(dev, &tuna, data); 21959ce48e5aSMichal Kubecek if (ret) 21969ce48e5aSMichal Kubecek goto out; 21979ce48e5aSMichal Kubecek useraddr += sizeof(tuna); 21989ce48e5aSMichal Kubecek ret = -EFAULT; 21999ce48e5aSMichal Kubecek if (copy_to_user(useraddr, data, tuna.len)) 22009ce48e5aSMichal Kubecek goto out; 22019ce48e5aSMichal Kubecek ret = 0; 22029ce48e5aSMichal Kubecek 22039ce48e5aSMichal Kubecek out: 22049ce48e5aSMichal Kubecek kfree(data); 22059ce48e5aSMichal Kubecek return ret; 22069ce48e5aSMichal Kubecek } 22079ce48e5aSMichal Kubecek 22089ce48e5aSMichal Kubecek static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) 22099ce48e5aSMichal Kubecek { 22109ce48e5aSMichal Kubecek int ret; 22119ce48e5aSMichal Kubecek struct ethtool_tunable tuna; 22129ce48e5aSMichal Kubecek const struct ethtool_ops *ops = dev->ethtool_ops; 22139ce48e5aSMichal Kubecek void *data; 22149ce48e5aSMichal Kubecek 22159ce48e5aSMichal Kubecek if (!ops->set_tunable) 22169ce48e5aSMichal Kubecek return -EOPNOTSUPP; 22179ce48e5aSMichal Kubecek if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 22189ce48e5aSMichal Kubecek return -EFAULT; 22199ce48e5aSMichal Kubecek ret = ethtool_tunable_valid(&tuna); 22209ce48e5aSMichal Kubecek if (ret) 22219ce48e5aSMichal Kubecek return ret; 22229ce48e5aSMichal Kubecek useraddr += sizeof(tuna); 22239ce48e5aSMichal Kubecek data = memdup_user(useraddr, tuna.len); 22249ce48e5aSMichal Kubecek if (IS_ERR(data)) 22259ce48e5aSMichal Kubecek return PTR_ERR(data); 22269ce48e5aSMichal Kubecek ret = ops->set_tunable(dev, &tuna, data); 22279ce48e5aSMichal Kubecek 22289ce48e5aSMichal Kubecek kfree(data); 22299ce48e5aSMichal Kubecek return ret; 22309ce48e5aSMichal Kubecek } 22319ce48e5aSMichal Kubecek 22329ce48e5aSMichal Kubecek static noinline_for_stack int 22339ce48e5aSMichal Kubecek ethtool_get_per_queue_coalesce(struct net_device *dev, 22349ce48e5aSMichal Kubecek void __user *useraddr, 22359ce48e5aSMichal Kubecek struct ethtool_per_queue_op *per_queue_opt) 22369ce48e5aSMichal Kubecek { 22379ce48e5aSMichal Kubecek u32 bit; 22389ce48e5aSMichal Kubecek int ret; 22399ce48e5aSMichal Kubecek DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 22409ce48e5aSMichal Kubecek 22419ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_per_queue_coalesce) 22429ce48e5aSMichal Kubecek return -EOPNOTSUPP; 22439ce48e5aSMichal Kubecek 22449ce48e5aSMichal Kubecek useraddr += sizeof(*per_queue_opt); 22459ce48e5aSMichal Kubecek 22469ce48e5aSMichal Kubecek bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, 22479ce48e5aSMichal Kubecek MAX_NUM_QUEUE); 22489ce48e5aSMichal Kubecek 22499ce48e5aSMichal Kubecek for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 22509ce48e5aSMichal Kubecek struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; 22519ce48e5aSMichal Kubecek 22529ce48e5aSMichal Kubecek ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); 22539ce48e5aSMichal Kubecek if (ret != 0) 22549ce48e5aSMichal Kubecek return ret; 22559ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) 22569ce48e5aSMichal Kubecek return -EFAULT; 22579ce48e5aSMichal Kubecek useraddr += sizeof(coalesce); 22589ce48e5aSMichal Kubecek } 22599ce48e5aSMichal Kubecek 22609ce48e5aSMichal Kubecek return 0; 22619ce48e5aSMichal Kubecek } 22629ce48e5aSMichal Kubecek 22639ce48e5aSMichal Kubecek static noinline_for_stack int 22649ce48e5aSMichal Kubecek ethtool_set_per_queue_coalesce(struct net_device *dev, 22659ce48e5aSMichal Kubecek void __user *useraddr, 22669ce48e5aSMichal Kubecek struct ethtool_per_queue_op *per_queue_opt) 22679ce48e5aSMichal Kubecek { 22689ce48e5aSMichal Kubecek u32 bit; 22699ce48e5aSMichal Kubecek int i, ret = 0; 22709ce48e5aSMichal Kubecek int n_queue; 22719ce48e5aSMichal Kubecek struct ethtool_coalesce *backup = NULL, *tmp = NULL; 22729ce48e5aSMichal Kubecek DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); 22739ce48e5aSMichal Kubecek 22749ce48e5aSMichal Kubecek if ((!dev->ethtool_ops->set_per_queue_coalesce) || 22759ce48e5aSMichal Kubecek (!dev->ethtool_ops->get_per_queue_coalesce)) 22769ce48e5aSMichal Kubecek return -EOPNOTSUPP; 22779ce48e5aSMichal Kubecek 22789ce48e5aSMichal Kubecek useraddr += sizeof(*per_queue_opt); 22799ce48e5aSMichal Kubecek 22809ce48e5aSMichal Kubecek bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); 22819ce48e5aSMichal Kubecek n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); 22829ce48e5aSMichal Kubecek tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); 22839ce48e5aSMichal Kubecek if (!backup) 22849ce48e5aSMichal Kubecek return -ENOMEM; 22859ce48e5aSMichal Kubecek 22869ce48e5aSMichal Kubecek for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { 22879ce48e5aSMichal Kubecek struct ethtool_coalesce coalesce; 22889ce48e5aSMichal Kubecek 22899ce48e5aSMichal Kubecek ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); 22909ce48e5aSMichal Kubecek if (ret != 0) 22919ce48e5aSMichal Kubecek goto roll_back; 22929ce48e5aSMichal Kubecek 22939ce48e5aSMichal Kubecek tmp++; 22949ce48e5aSMichal Kubecek 22959ce48e5aSMichal Kubecek if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { 22969ce48e5aSMichal Kubecek ret = -EFAULT; 22979ce48e5aSMichal Kubecek goto roll_back; 22989ce48e5aSMichal Kubecek } 22999ce48e5aSMichal Kubecek 23009ce48e5aSMichal Kubecek ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); 23019ce48e5aSMichal Kubecek if (ret != 0) 23029ce48e5aSMichal Kubecek goto roll_back; 23039ce48e5aSMichal Kubecek 23049ce48e5aSMichal Kubecek useraddr += sizeof(coalesce); 23059ce48e5aSMichal Kubecek } 23069ce48e5aSMichal Kubecek 23079ce48e5aSMichal Kubecek roll_back: 23089ce48e5aSMichal Kubecek if (ret != 0) { 23099ce48e5aSMichal Kubecek tmp = backup; 23109ce48e5aSMichal Kubecek for_each_set_bit(i, queue_mask, bit) { 23119ce48e5aSMichal Kubecek dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); 23129ce48e5aSMichal Kubecek tmp++; 23139ce48e5aSMichal Kubecek } 23149ce48e5aSMichal Kubecek } 23159ce48e5aSMichal Kubecek kfree(backup); 23169ce48e5aSMichal Kubecek 23179ce48e5aSMichal Kubecek return ret; 23189ce48e5aSMichal Kubecek } 23199ce48e5aSMichal Kubecek 23209ce48e5aSMichal Kubecek static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, 23219ce48e5aSMichal Kubecek void __user *useraddr, u32 sub_cmd) 23229ce48e5aSMichal Kubecek { 23239ce48e5aSMichal Kubecek struct ethtool_per_queue_op per_queue_opt; 23249ce48e5aSMichal Kubecek 23259ce48e5aSMichal Kubecek if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) 23269ce48e5aSMichal Kubecek return -EFAULT; 23279ce48e5aSMichal Kubecek 23289ce48e5aSMichal Kubecek if (per_queue_opt.sub_command != sub_cmd) 23299ce48e5aSMichal Kubecek return -EINVAL; 23309ce48e5aSMichal Kubecek 23319ce48e5aSMichal Kubecek switch (per_queue_opt.sub_command) { 23329ce48e5aSMichal Kubecek case ETHTOOL_GCOALESCE: 23339ce48e5aSMichal Kubecek return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); 23349ce48e5aSMichal Kubecek case ETHTOOL_SCOALESCE: 23359ce48e5aSMichal Kubecek return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); 23369ce48e5aSMichal Kubecek default: 23379ce48e5aSMichal Kubecek return -EOPNOTSUPP; 23389ce48e5aSMichal Kubecek }; 23399ce48e5aSMichal Kubecek } 23409ce48e5aSMichal Kubecek 23419ce48e5aSMichal Kubecek static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) 23429ce48e5aSMichal Kubecek { 23439ce48e5aSMichal Kubecek switch (tuna->id) { 23449ce48e5aSMichal Kubecek case ETHTOOL_PHY_DOWNSHIFT: 23459ce48e5aSMichal Kubecek case ETHTOOL_PHY_FAST_LINK_DOWN: 23469ce48e5aSMichal Kubecek if (tuna->len != sizeof(u8) || 23479ce48e5aSMichal Kubecek tuna->type_id != ETHTOOL_TUNABLE_U8) 23489ce48e5aSMichal Kubecek return -EINVAL; 23499ce48e5aSMichal Kubecek break; 23509ce48e5aSMichal Kubecek case ETHTOOL_PHY_EDPD: 23519ce48e5aSMichal Kubecek if (tuna->len != sizeof(u16) || 23529ce48e5aSMichal Kubecek tuna->type_id != ETHTOOL_TUNABLE_U16) 23539ce48e5aSMichal Kubecek return -EINVAL; 23549ce48e5aSMichal Kubecek break; 23559ce48e5aSMichal Kubecek default: 23569ce48e5aSMichal Kubecek return -EINVAL; 23579ce48e5aSMichal Kubecek } 23589ce48e5aSMichal Kubecek 23599ce48e5aSMichal Kubecek return 0; 23609ce48e5aSMichal Kubecek } 23619ce48e5aSMichal Kubecek 23629ce48e5aSMichal Kubecek static int get_phy_tunable(struct net_device *dev, void __user *useraddr) 23639ce48e5aSMichal Kubecek { 23649ce48e5aSMichal Kubecek int ret; 23659ce48e5aSMichal Kubecek struct ethtool_tunable tuna; 23669ce48e5aSMichal Kubecek struct phy_device *phydev = dev->phydev; 23679ce48e5aSMichal Kubecek void *data; 23689ce48e5aSMichal Kubecek 23699ce48e5aSMichal Kubecek if (!(phydev && phydev->drv && phydev->drv->get_tunable)) 23709ce48e5aSMichal Kubecek return -EOPNOTSUPP; 23719ce48e5aSMichal Kubecek 23729ce48e5aSMichal Kubecek if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 23739ce48e5aSMichal Kubecek return -EFAULT; 23749ce48e5aSMichal Kubecek ret = ethtool_phy_tunable_valid(&tuna); 23759ce48e5aSMichal Kubecek if (ret) 23769ce48e5aSMichal Kubecek return ret; 23779ce48e5aSMichal Kubecek data = kmalloc(tuna.len, GFP_USER); 23789ce48e5aSMichal Kubecek if (!data) 23799ce48e5aSMichal Kubecek return -ENOMEM; 23809ce48e5aSMichal Kubecek mutex_lock(&phydev->lock); 23819ce48e5aSMichal Kubecek ret = phydev->drv->get_tunable(phydev, &tuna, data); 23829ce48e5aSMichal Kubecek mutex_unlock(&phydev->lock); 23839ce48e5aSMichal Kubecek if (ret) 23849ce48e5aSMichal Kubecek goto out; 23859ce48e5aSMichal Kubecek useraddr += sizeof(tuna); 23869ce48e5aSMichal Kubecek ret = -EFAULT; 23879ce48e5aSMichal Kubecek if (copy_to_user(useraddr, data, tuna.len)) 23889ce48e5aSMichal Kubecek goto out; 23899ce48e5aSMichal Kubecek ret = 0; 23909ce48e5aSMichal Kubecek 23919ce48e5aSMichal Kubecek out: 23929ce48e5aSMichal Kubecek kfree(data); 23939ce48e5aSMichal Kubecek return ret; 23949ce48e5aSMichal Kubecek } 23959ce48e5aSMichal Kubecek 23969ce48e5aSMichal Kubecek static int set_phy_tunable(struct net_device *dev, void __user *useraddr) 23979ce48e5aSMichal Kubecek { 23989ce48e5aSMichal Kubecek int ret; 23999ce48e5aSMichal Kubecek struct ethtool_tunable tuna; 24009ce48e5aSMichal Kubecek struct phy_device *phydev = dev->phydev; 24019ce48e5aSMichal Kubecek void *data; 24029ce48e5aSMichal Kubecek 24039ce48e5aSMichal Kubecek if (!(phydev && phydev->drv && phydev->drv->set_tunable)) 24049ce48e5aSMichal Kubecek return -EOPNOTSUPP; 24059ce48e5aSMichal Kubecek if (copy_from_user(&tuna, useraddr, sizeof(tuna))) 24069ce48e5aSMichal Kubecek return -EFAULT; 24079ce48e5aSMichal Kubecek ret = ethtool_phy_tunable_valid(&tuna); 24089ce48e5aSMichal Kubecek if (ret) 24099ce48e5aSMichal Kubecek return ret; 24109ce48e5aSMichal Kubecek useraddr += sizeof(tuna); 24119ce48e5aSMichal Kubecek data = memdup_user(useraddr, tuna.len); 24129ce48e5aSMichal Kubecek if (IS_ERR(data)) 24139ce48e5aSMichal Kubecek return PTR_ERR(data); 24149ce48e5aSMichal Kubecek mutex_lock(&phydev->lock); 24159ce48e5aSMichal Kubecek ret = phydev->drv->set_tunable(phydev, &tuna, data); 24169ce48e5aSMichal Kubecek mutex_unlock(&phydev->lock); 24179ce48e5aSMichal Kubecek 24189ce48e5aSMichal Kubecek kfree(data); 24199ce48e5aSMichal Kubecek return ret; 24209ce48e5aSMichal Kubecek } 24219ce48e5aSMichal Kubecek 24229ce48e5aSMichal Kubecek static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) 24239ce48e5aSMichal Kubecek { 24249ce48e5aSMichal Kubecek struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; 24259ce48e5aSMichal Kubecek int rc; 24269ce48e5aSMichal Kubecek 24279ce48e5aSMichal Kubecek if (!dev->ethtool_ops->get_fecparam) 24289ce48e5aSMichal Kubecek return -EOPNOTSUPP; 24299ce48e5aSMichal Kubecek 24309ce48e5aSMichal Kubecek rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); 24319ce48e5aSMichal Kubecek if (rc) 24329ce48e5aSMichal Kubecek return rc; 24339ce48e5aSMichal Kubecek 24349ce48e5aSMichal Kubecek if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) 24359ce48e5aSMichal Kubecek return -EFAULT; 24369ce48e5aSMichal Kubecek return 0; 24379ce48e5aSMichal Kubecek } 24389ce48e5aSMichal Kubecek 24399ce48e5aSMichal Kubecek static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) 24409ce48e5aSMichal Kubecek { 24419ce48e5aSMichal Kubecek struct ethtool_fecparam fecparam; 24429ce48e5aSMichal Kubecek 24439ce48e5aSMichal Kubecek if (!dev->ethtool_ops->set_fecparam) 24449ce48e5aSMichal Kubecek return -EOPNOTSUPP; 24459ce48e5aSMichal Kubecek 24469ce48e5aSMichal Kubecek if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) 24479ce48e5aSMichal Kubecek return -EFAULT; 24489ce48e5aSMichal Kubecek 24499ce48e5aSMichal Kubecek return dev->ethtool_ops->set_fecparam(dev, &fecparam); 24509ce48e5aSMichal Kubecek } 24519ce48e5aSMichal Kubecek 24529ce48e5aSMichal Kubecek /* The main entry point in this file. Called from net/core/dev_ioctl.c */ 24539ce48e5aSMichal Kubecek 24549ce48e5aSMichal Kubecek int dev_ethtool(struct net *net, struct ifreq *ifr) 24559ce48e5aSMichal Kubecek { 24569ce48e5aSMichal Kubecek struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); 24579ce48e5aSMichal Kubecek void __user *useraddr = ifr->ifr_data; 24589ce48e5aSMichal Kubecek u32 ethcmd, sub_cmd; 24599ce48e5aSMichal Kubecek int rc; 24609ce48e5aSMichal Kubecek netdev_features_t old_features; 24619ce48e5aSMichal Kubecek 24629ce48e5aSMichal Kubecek if (!dev || !netif_device_present(dev)) 24639ce48e5aSMichal Kubecek return -ENODEV; 24649ce48e5aSMichal Kubecek 24659ce48e5aSMichal Kubecek if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) 24669ce48e5aSMichal Kubecek return -EFAULT; 24679ce48e5aSMichal Kubecek 24689ce48e5aSMichal Kubecek if (ethcmd == ETHTOOL_PERQUEUE) { 24699ce48e5aSMichal Kubecek if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) 24709ce48e5aSMichal Kubecek return -EFAULT; 24719ce48e5aSMichal Kubecek } else { 24729ce48e5aSMichal Kubecek sub_cmd = ethcmd; 24739ce48e5aSMichal Kubecek } 24749ce48e5aSMichal Kubecek /* Allow some commands to be done by anyone */ 24759ce48e5aSMichal Kubecek switch (sub_cmd) { 24769ce48e5aSMichal Kubecek case ETHTOOL_GSET: 24779ce48e5aSMichal Kubecek case ETHTOOL_GDRVINFO: 24789ce48e5aSMichal Kubecek case ETHTOOL_GMSGLVL: 24799ce48e5aSMichal Kubecek case ETHTOOL_GLINK: 24809ce48e5aSMichal Kubecek case ETHTOOL_GCOALESCE: 24819ce48e5aSMichal Kubecek case ETHTOOL_GRINGPARAM: 24829ce48e5aSMichal Kubecek case ETHTOOL_GPAUSEPARAM: 24839ce48e5aSMichal Kubecek case ETHTOOL_GRXCSUM: 24849ce48e5aSMichal Kubecek case ETHTOOL_GTXCSUM: 24859ce48e5aSMichal Kubecek case ETHTOOL_GSG: 24869ce48e5aSMichal Kubecek case ETHTOOL_GSSET_INFO: 24879ce48e5aSMichal Kubecek case ETHTOOL_GSTRINGS: 24889ce48e5aSMichal Kubecek case ETHTOOL_GSTATS: 24899ce48e5aSMichal Kubecek case ETHTOOL_GPHYSTATS: 24909ce48e5aSMichal Kubecek case ETHTOOL_GTSO: 24919ce48e5aSMichal Kubecek case ETHTOOL_GPERMADDR: 24929ce48e5aSMichal Kubecek case ETHTOOL_GUFO: 24939ce48e5aSMichal Kubecek case ETHTOOL_GGSO: 24949ce48e5aSMichal Kubecek case ETHTOOL_GGRO: 24959ce48e5aSMichal Kubecek case ETHTOOL_GFLAGS: 24969ce48e5aSMichal Kubecek case ETHTOOL_GPFLAGS: 24979ce48e5aSMichal Kubecek case ETHTOOL_GRXFH: 24989ce48e5aSMichal Kubecek case ETHTOOL_GRXRINGS: 24999ce48e5aSMichal Kubecek case ETHTOOL_GRXCLSRLCNT: 25009ce48e5aSMichal Kubecek case ETHTOOL_GRXCLSRULE: 25019ce48e5aSMichal Kubecek case ETHTOOL_GRXCLSRLALL: 25029ce48e5aSMichal Kubecek case ETHTOOL_GRXFHINDIR: 25039ce48e5aSMichal Kubecek case ETHTOOL_GRSSH: 25049ce48e5aSMichal Kubecek case ETHTOOL_GFEATURES: 25059ce48e5aSMichal Kubecek case ETHTOOL_GCHANNELS: 25069ce48e5aSMichal Kubecek case ETHTOOL_GET_TS_INFO: 25079ce48e5aSMichal Kubecek case ETHTOOL_GEEE: 25089ce48e5aSMichal Kubecek case ETHTOOL_GTUNABLE: 25099ce48e5aSMichal Kubecek case ETHTOOL_PHY_GTUNABLE: 25109ce48e5aSMichal Kubecek case ETHTOOL_GLINKSETTINGS: 25119ce48e5aSMichal Kubecek case ETHTOOL_GFECPARAM: 25129ce48e5aSMichal Kubecek break; 25139ce48e5aSMichal Kubecek default: 25149ce48e5aSMichal Kubecek if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) 25159ce48e5aSMichal Kubecek return -EPERM; 25169ce48e5aSMichal Kubecek } 25179ce48e5aSMichal Kubecek 25189ce48e5aSMichal Kubecek if (dev->ethtool_ops->begin) { 25199ce48e5aSMichal Kubecek rc = dev->ethtool_ops->begin(dev); 25209ce48e5aSMichal Kubecek if (rc < 0) 25219ce48e5aSMichal Kubecek return rc; 25229ce48e5aSMichal Kubecek } 25239ce48e5aSMichal Kubecek old_features = dev->features; 25249ce48e5aSMichal Kubecek 25259ce48e5aSMichal Kubecek switch (ethcmd) { 25269ce48e5aSMichal Kubecek case ETHTOOL_GSET: 25279ce48e5aSMichal Kubecek rc = ethtool_get_settings(dev, useraddr); 25289ce48e5aSMichal Kubecek break; 25299ce48e5aSMichal Kubecek case ETHTOOL_SSET: 25309ce48e5aSMichal Kubecek rc = ethtool_set_settings(dev, useraddr); 25319ce48e5aSMichal Kubecek break; 25329ce48e5aSMichal Kubecek case ETHTOOL_GDRVINFO: 25339ce48e5aSMichal Kubecek rc = ethtool_get_drvinfo(dev, useraddr); 25349ce48e5aSMichal Kubecek break; 25359ce48e5aSMichal Kubecek case ETHTOOL_GREGS: 25369ce48e5aSMichal Kubecek rc = ethtool_get_regs(dev, useraddr); 25379ce48e5aSMichal Kubecek break; 25389ce48e5aSMichal Kubecek case ETHTOOL_GWOL: 25399ce48e5aSMichal Kubecek rc = ethtool_get_wol(dev, useraddr); 25409ce48e5aSMichal Kubecek break; 25419ce48e5aSMichal Kubecek case ETHTOOL_SWOL: 25429ce48e5aSMichal Kubecek rc = ethtool_set_wol(dev, useraddr); 25439ce48e5aSMichal Kubecek break; 25449ce48e5aSMichal Kubecek case ETHTOOL_GMSGLVL: 25459ce48e5aSMichal Kubecek rc = ethtool_get_value(dev, useraddr, ethcmd, 25469ce48e5aSMichal Kubecek dev->ethtool_ops->get_msglevel); 25479ce48e5aSMichal Kubecek break; 25489ce48e5aSMichal Kubecek case ETHTOOL_SMSGLVL: 25499ce48e5aSMichal Kubecek rc = ethtool_set_value_void(dev, useraddr, 25509ce48e5aSMichal Kubecek dev->ethtool_ops->set_msglevel); 25510bda7af3SMichal Kubecek if (!rc) 25520bda7af3SMichal Kubecek ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); 25539ce48e5aSMichal Kubecek break; 25549ce48e5aSMichal Kubecek case ETHTOOL_GEEE: 25559ce48e5aSMichal Kubecek rc = ethtool_get_eee(dev, useraddr); 25569ce48e5aSMichal Kubecek break; 25579ce48e5aSMichal Kubecek case ETHTOOL_SEEE: 25589ce48e5aSMichal Kubecek rc = ethtool_set_eee(dev, useraddr); 25599ce48e5aSMichal Kubecek break; 25609ce48e5aSMichal Kubecek case ETHTOOL_NWAY_RST: 25619ce48e5aSMichal Kubecek rc = ethtool_nway_reset(dev); 25629ce48e5aSMichal Kubecek break; 25639ce48e5aSMichal Kubecek case ETHTOOL_GLINK: 25649ce48e5aSMichal Kubecek rc = ethtool_get_link(dev, useraddr); 25659ce48e5aSMichal Kubecek break; 25669ce48e5aSMichal Kubecek case ETHTOOL_GEEPROM: 25679ce48e5aSMichal Kubecek rc = ethtool_get_eeprom(dev, useraddr); 25689ce48e5aSMichal Kubecek break; 25699ce48e5aSMichal Kubecek case ETHTOOL_SEEPROM: 25709ce48e5aSMichal Kubecek rc = ethtool_set_eeprom(dev, useraddr); 25719ce48e5aSMichal Kubecek break; 25729ce48e5aSMichal Kubecek case ETHTOOL_GCOALESCE: 25739ce48e5aSMichal Kubecek rc = ethtool_get_coalesce(dev, useraddr); 25749ce48e5aSMichal Kubecek break; 25759ce48e5aSMichal Kubecek case ETHTOOL_SCOALESCE: 25769ce48e5aSMichal Kubecek rc = ethtool_set_coalesce(dev, useraddr); 25779ce48e5aSMichal Kubecek break; 25789ce48e5aSMichal Kubecek case ETHTOOL_GRINGPARAM: 25799ce48e5aSMichal Kubecek rc = ethtool_get_ringparam(dev, useraddr); 25809ce48e5aSMichal Kubecek break; 25819ce48e5aSMichal Kubecek case ETHTOOL_SRINGPARAM: 25829ce48e5aSMichal Kubecek rc = ethtool_set_ringparam(dev, useraddr); 25839ce48e5aSMichal Kubecek break; 25849ce48e5aSMichal Kubecek case ETHTOOL_GPAUSEPARAM: 25859ce48e5aSMichal Kubecek rc = ethtool_get_pauseparam(dev, useraddr); 25869ce48e5aSMichal Kubecek break; 25879ce48e5aSMichal Kubecek case ETHTOOL_SPAUSEPARAM: 25889ce48e5aSMichal Kubecek rc = ethtool_set_pauseparam(dev, useraddr); 25899ce48e5aSMichal Kubecek break; 25909ce48e5aSMichal Kubecek case ETHTOOL_TEST: 25919ce48e5aSMichal Kubecek rc = ethtool_self_test(dev, useraddr); 25929ce48e5aSMichal Kubecek break; 25939ce48e5aSMichal Kubecek case ETHTOOL_GSTRINGS: 25949ce48e5aSMichal Kubecek rc = ethtool_get_strings(dev, useraddr); 25959ce48e5aSMichal Kubecek break; 25969ce48e5aSMichal Kubecek case ETHTOOL_PHYS_ID: 25979ce48e5aSMichal Kubecek rc = ethtool_phys_id(dev, useraddr); 25989ce48e5aSMichal Kubecek break; 25999ce48e5aSMichal Kubecek case ETHTOOL_GSTATS: 26009ce48e5aSMichal Kubecek rc = ethtool_get_stats(dev, useraddr); 26019ce48e5aSMichal Kubecek break; 26029ce48e5aSMichal Kubecek case ETHTOOL_GPERMADDR: 26039ce48e5aSMichal Kubecek rc = ethtool_get_perm_addr(dev, useraddr); 26049ce48e5aSMichal Kubecek break; 26059ce48e5aSMichal Kubecek case ETHTOOL_GFLAGS: 26069ce48e5aSMichal Kubecek rc = ethtool_get_value(dev, useraddr, ethcmd, 26079ce48e5aSMichal Kubecek __ethtool_get_flags); 26089ce48e5aSMichal Kubecek break; 26099ce48e5aSMichal Kubecek case ETHTOOL_SFLAGS: 26109ce48e5aSMichal Kubecek rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); 26119ce48e5aSMichal Kubecek break; 26129ce48e5aSMichal Kubecek case ETHTOOL_GPFLAGS: 26139ce48e5aSMichal Kubecek rc = ethtool_get_value(dev, useraddr, ethcmd, 26149ce48e5aSMichal Kubecek dev->ethtool_ops->get_priv_flags); 26159ce48e5aSMichal Kubecek break; 26169ce48e5aSMichal Kubecek case ETHTOOL_SPFLAGS: 26179ce48e5aSMichal Kubecek rc = ethtool_set_value(dev, useraddr, 26189ce48e5aSMichal Kubecek dev->ethtool_ops->set_priv_flags); 26199ce48e5aSMichal Kubecek break; 26209ce48e5aSMichal Kubecek case ETHTOOL_GRXFH: 26219ce48e5aSMichal Kubecek case ETHTOOL_GRXRINGS: 26229ce48e5aSMichal Kubecek case ETHTOOL_GRXCLSRLCNT: 26239ce48e5aSMichal Kubecek case ETHTOOL_GRXCLSRULE: 26249ce48e5aSMichal Kubecek case ETHTOOL_GRXCLSRLALL: 26259ce48e5aSMichal Kubecek rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); 26269ce48e5aSMichal Kubecek break; 26279ce48e5aSMichal Kubecek case ETHTOOL_SRXFH: 26289ce48e5aSMichal Kubecek case ETHTOOL_SRXCLSRLDEL: 26299ce48e5aSMichal Kubecek case ETHTOOL_SRXCLSRLINS: 26309ce48e5aSMichal Kubecek rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); 26319ce48e5aSMichal Kubecek break; 26329ce48e5aSMichal Kubecek case ETHTOOL_FLASHDEV: 26339ce48e5aSMichal Kubecek rc = ethtool_flash_device(dev, useraddr); 26349ce48e5aSMichal Kubecek break; 26359ce48e5aSMichal Kubecek case ETHTOOL_RESET: 26369ce48e5aSMichal Kubecek rc = ethtool_reset(dev, useraddr); 26379ce48e5aSMichal Kubecek break; 26389ce48e5aSMichal Kubecek case ETHTOOL_GSSET_INFO: 26399ce48e5aSMichal Kubecek rc = ethtool_get_sset_info(dev, useraddr); 26409ce48e5aSMichal Kubecek break; 26419ce48e5aSMichal Kubecek case ETHTOOL_GRXFHINDIR: 26429ce48e5aSMichal Kubecek rc = ethtool_get_rxfh_indir(dev, useraddr); 26439ce48e5aSMichal Kubecek break; 26449ce48e5aSMichal Kubecek case ETHTOOL_SRXFHINDIR: 26459ce48e5aSMichal Kubecek rc = ethtool_set_rxfh_indir(dev, useraddr); 26469ce48e5aSMichal Kubecek break; 26479ce48e5aSMichal Kubecek case ETHTOOL_GRSSH: 26489ce48e5aSMichal Kubecek rc = ethtool_get_rxfh(dev, useraddr); 26499ce48e5aSMichal Kubecek break; 26509ce48e5aSMichal Kubecek case ETHTOOL_SRSSH: 26519ce48e5aSMichal Kubecek rc = ethtool_set_rxfh(dev, useraddr); 26529ce48e5aSMichal Kubecek break; 26539ce48e5aSMichal Kubecek case ETHTOOL_GFEATURES: 26549ce48e5aSMichal Kubecek rc = ethtool_get_features(dev, useraddr); 26559ce48e5aSMichal Kubecek break; 26569ce48e5aSMichal Kubecek case ETHTOOL_SFEATURES: 26579ce48e5aSMichal Kubecek rc = ethtool_set_features(dev, useraddr); 26589ce48e5aSMichal Kubecek break; 26599ce48e5aSMichal Kubecek case ETHTOOL_GTXCSUM: 26609ce48e5aSMichal Kubecek case ETHTOOL_GRXCSUM: 26619ce48e5aSMichal Kubecek case ETHTOOL_GSG: 26629ce48e5aSMichal Kubecek case ETHTOOL_GTSO: 26639ce48e5aSMichal Kubecek case ETHTOOL_GGSO: 26649ce48e5aSMichal Kubecek case ETHTOOL_GGRO: 26659ce48e5aSMichal Kubecek rc = ethtool_get_one_feature(dev, useraddr, ethcmd); 26669ce48e5aSMichal Kubecek break; 26679ce48e5aSMichal Kubecek case ETHTOOL_STXCSUM: 26689ce48e5aSMichal Kubecek case ETHTOOL_SRXCSUM: 26699ce48e5aSMichal Kubecek case ETHTOOL_SSG: 26709ce48e5aSMichal Kubecek case ETHTOOL_STSO: 26719ce48e5aSMichal Kubecek case ETHTOOL_SGSO: 26729ce48e5aSMichal Kubecek case ETHTOOL_SGRO: 26739ce48e5aSMichal Kubecek rc = ethtool_set_one_feature(dev, useraddr, ethcmd); 26749ce48e5aSMichal Kubecek break; 26759ce48e5aSMichal Kubecek case ETHTOOL_GCHANNELS: 26769ce48e5aSMichal Kubecek rc = ethtool_get_channels(dev, useraddr); 26779ce48e5aSMichal Kubecek break; 26789ce48e5aSMichal Kubecek case ETHTOOL_SCHANNELS: 26799ce48e5aSMichal Kubecek rc = ethtool_set_channels(dev, useraddr); 26809ce48e5aSMichal Kubecek break; 26819ce48e5aSMichal Kubecek case ETHTOOL_SET_DUMP: 26829ce48e5aSMichal Kubecek rc = ethtool_set_dump(dev, useraddr); 26839ce48e5aSMichal Kubecek break; 26849ce48e5aSMichal Kubecek case ETHTOOL_GET_DUMP_FLAG: 26859ce48e5aSMichal Kubecek rc = ethtool_get_dump_flag(dev, useraddr); 26869ce48e5aSMichal Kubecek break; 26879ce48e5aSMichal Kubecek case ETHTOOL_GET_DUMP_DATA: 26889ce48e5aSMichal Kubecek rc = ethtool_get_dump_data(dev, useraddr); 26899ce48e5aSMichal Kubecek break; 26909ce48e5aSMichal Kubecek case ETHTOOL_GET_TS_INFO: 26919ce48e5aSMichal Kubecek rc = ethtool_get_ts_info(dev, useraddr); 26929ce48e5aSMichal Kubecek break; 26939ce48e5aSMichal Kubecek case ETHTOOL_GMODULEINFO: 26949ce48e5aSMichal Kubecek rc = ethtool_get_module_info(dev, useraddr); 26959ce48e5aSMichal Kubecek break; 26969ce48e5aSMichal Kubecek case ETHTOOL_GMODULEEEPROM: 26979ce48e5aSMichal Kubecek rc = ethtool_get_module_eeprom(dev, useraddr); 26989ce48e5aSMichal Kubecek break; 26999ce48e5aSMichal Kubecek case ETHTOOL_GTUNABLE: 27009ce48e5aSMichal Kubecek rc = ethtool_get_tunable(dev, useraddr); 27019ce48e5aSMichal Kubecek break; 27029ce48e5aSMichal Kubecek case ETHTOOL_STUNABLE: 27039ce48e5aSMichal Kubecek rc = ethtool_set_tunable(dev, useraddr); 27049ce48e5aSMichal Kubecek break; 27059ce48e5aSMichal Kubecek case ETHTOOL_GPHYSTATS: 27069ce48e5aSMichal Kubecek rc = ethtool_get_phy_stats(dev, useraddr); 27079ce48e5aSMichal Kubecek break; 27089ce48e5aSMichal Kubecek case ETHTOOL_PERQUEUE: 27099ce48e5aSMichal Kubecek rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); 27109ce48e5aSMichal Kubecek break; 27119ce48e5aSMichal Kubecek case ETHTOOL_GLINKSETTINGS: 27129ce48e5aSMichal Kubecek rc = ethtool_get_link_ksettings(dev, useraddr); 27139ce48e5aSMichal Kubecek break; 27149ce48e5aSMichal Kubecek case ETHTOOL_SLINKSETTINGS: 27159ce48e5aSMichal Kubecek rc = ethtool_set_link_ksettings(dev, useraddr); 27169ce48e5aSMichal Kubecek break; 27179ce48e5aSMichal Kubecek case ETHTOOL_PHY_GTUNABLE: 27189ce48e5aSMichal Kubecek rc = get_phy_tunable(dev, useraddr); 27199ce48e5aSMichal Kubecek break; 27209ce48e5aSMichal Kubecek case ETHTOOL_PHY_STUNABLE: 27219ce48e5aSMichal Kubecek rc = set_phy_tunable(dev, useraddr); 27229ce48e5aSMichal Kubecek break; 27239ce48e5aSMichal Kubecek case ETHTOOL_GFECPARAM: 27249ce48e5aSMichal Kubecek rc = ethtool_get_fecparam(dev, useraddr); 27259ce48e5aSMichal Kubecek break; 27269ce48e5aSMichal Kubecek case ETHTOOL_SFECPARAM: 27279ce48e5aSMichal Kubecek rc = ethtool_set_fecparam(dev, useraddr); 27289ce48e5aSMichal Kubecek break; 27299ce48e5aSMichal Kubecek default: 27309ce48e5aSMichal Kubecek rc = -EOPNOTSUPP; 27319ce48e5aSMichal Kubecek } 27329ce48e5aSMichal Kubecek 27339ce48e5aSMichal Kubecek if (dev->ethtool_ops->complete) 27349ce48e5aSMichal Kubecek dev->ethtool_ops->complete(dev); 27359ce48e5aSMichal Kubecek 27369ce48e5aSMichal Kubecek if (old_features != dev->features) 27379ce48e5aSMichal Kubecek netdev_features_change(dev); 27389ce48e5aSMichal Kubecek 27399ce48e5aSMichal Kubecek return rc; 27409ce48e5aSMichal Kubecek } 27419ce48e5aSMichal Kubecek 27429ce48e5aSMichal Kubecek struct ethtool_rx_flow_key { 27439ce48e5aSMichal Kubecek struct flow_dissector_key_basic basic; 27449ce48e5aSMichal Kubecek union { 27459ce48e5aSMichal Kubecek struct flow_dissector_key_ipv4_addrs ipv4; 27469ce48e5aSMichal Kubecek struct flow_dissector_key_ipv6_addrs ipv6; 27479ce48e5aSMichal Kubecek }; 27489ce48e5aSMichal Kubecek struct flow_dissector_key_ports tp; 27499ce48e5aSMichal Kubecek struct flow_dissector_key_ip ip; 27509ce48e5aSMichal Kubecek struct flow_dissector_key_vlan vlan; 27519ce48e5aSMichal Kubecek struct flow_dissector_key_eth_addrs eth_addrs; 27529ce48e5aSMichal Kubecek } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ 27539ce48e5aSMichal Kubecek 27549ce48e5aSMichal Kubecek struct ethtool_rx_flow_match { 27559ce48e5aSMichal Kubecek struct flow_dissector dissector; 27569ce48e5aSMichal Kubecek struct ethtool_rx_flow_key key; 27579ce48e5aSMichal Kubecek struct ethtool_rx_flow_key mask; 27589ce48e5aSMichal Kubecek }; 27599ce48e5aSMichal Kubecek 27609ce48e5aSMichal Kubecek struct ethtool_rx_flow_rule * 27619ce48e5aSMichal Kubecek ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) 27629ce48e5aSMichal Kubecek { 27639ce48e5aSMichal Kubecek const struct ethtool_rx_flow_spec *fs = input->fs; 27649ce48e5aSMichal Kubecek static struct in6_addr zero_addr = {}; 27659ce48e5aSMichal Kubecek struct ethtool_rx_flow_match *match; 27669ce48e5aSMichal Kubecek struct ethtool_rx_flow_rule *flow; 27679ce48e5aSMichal Kubecek struct flow_action_entry *act; 27689ce48e5aSMichal Kubecek 27699ce48e5aSMichal Kubecek flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + 27709ce48e5aSMichal Kubecek sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); 27719ce48e5aSMichal Kubecek if (!flow) 27729ce48e5aSMichal Kubecek return ERR_PTR(-ENOMEM); 27739ce48e5aSMichal Kubecek 27749ce48e5aSMichal Kubecek /* ethtool_rx supports only one single action per rule. */ 27759ce48e5aSMichal Kubecek flow->rule = flow_rule_alloc(1); 27769ce48e5aSMichal Kubecek if (!flow->rule) { 27779ce48e5aSMichal Kubecek kfree(flow); 27789ce48e5aSMichal Kubecek return ERR_PTR(-ENOMEM); 27799ce48e5aSMichal Kubecek } 27809ce48e5aSMichal Kubecek 27819ce48e5aSMichal Kubecek match = (struct ethtool_rx_flow_match *)flow->priv; 27829ce48e5aSMichal Kubecek flow->rule->match.dissector = &match->dissector; 27839ce48e5aSMichal Kubecek flow->rule->match.mask = &match->mask; 27849ce48e5aSMichal Kubecek flow->rule->match.key = &match->key; 27859ce48e5aSMichal Kubecek 27869ce48e5aSMichal Kubecek match->mask.basic.n_proto = htons(0xffff); 27879ce48e5aSMichal Kubecek 27889ce48e5aSMichal Kubecek switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 27899ce48e5aSMichal Kubecek case ETHER_FLOW: { 27909ce48e5aSMichal Kubecek const struct ethhdr *ether_spec, *ether_m_spec; 27919ce48e5aSMichal Kubecek 27929ce48e5aSMichal Kubecek ether_spec = &fs->h_u.ether_spec; 27939ce48e5aSMichal Kubecek ether_m_spec = &fs->m_u.ether_spec; 27949ce48e5aSMichal Kubecek 27959ce48e5aSMichal Kubecek if (!is_zero_ether_addr(ether_m_spec->h_source)) { 27969ce48e5aSMichal Kubecek ether_addr_copy(match->key.eth_addrs.src, 27979ce48e5aSMichal Kubecek ether_spec->h_source); 27989ce48e5aSMichal Kubecek ether_addr_copy(match->mask.eth_addrs.src, 27999ce48e5aSMichal Kubecek ether_m_spec->h_source); 28009ce48e5aSMichal Kubecek } 28019ce48e5aSMichal Kubecek if (!is_zero_ether_addr(ether_m_spec->h_dest)) { 28029ce48e5aSMichal Kubecek ether_addr_copy(match->key.eth_addrs.dst, 28039ce48e5aSMichal Kubecek ether_spec->h_dest); 28049ce48e5aSMichal Kubecek ether_addr_copy(match->mask.eth_addrs.dst, 28059ce48e5aSMichal Kubecek ether_m_spec->h_dest); 28069ce48e5aSMichal Kubecek } 28079ce48e5aSMichal Kubecek if (ether_m_spec->h_proto) { 28089ce48e5aSMichal Kubecek match->key.basic.n_proto = ether_spec->h_proto; 28099ce48e5aSMichal Kubecek match->mask.basic.n_proto = ether_m_spec->h_proto; 28109ce48e5aSMichal Kubecek } 28119ce48e5aSMichal Kubecek } 28129ce48e5aSMichal Kubecek break; 28139ce48e5aSMichal Kubecek case TCP_V4_FLOW: 28149ce48e5aSMichal Kubecek case UDP_V4_FLOW: { 28159ce48e5aSMichal Kubecek const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; 28169ce48e5aSMichal Kubecek 28179ce48e5aSMichal Kubecek match->key.basic.n_proto = htons(ETH_P_IP); 28189ce48e5aSMichal Kubecek 28199ce48e5aSMichal Kubecek v4_spec = &fs->h_u.tcp_ip4_spec; 28209ce48e5aSMichal Kubecek v4_m_spec = &fs->m_u.tcp_ip4_spec; 28219ce48e5aSMichal Kubecek 28229ce48e5aSMichal Kubecek if (v4_m_spec->ip4src) { 28239ce48e5aSMichal Kubecek match->key.ipv4.src = v4_spec->ip4src; 28249ce48e5aSMichal Kubecek match->mask.ipv4.src = v4_m_spec->ip4src; 28259ce48e5aSMichal Kubecek } 28269ce48e5aSMichal Kubecek if (v4_m_spec->ip4dst) { 28279ce48e5aSMichal Kubecek match->key.ipv4.dst = v4_spec->ip4dst; 28289ce48e5aSMichal Kubecek match->mask.ipv4.dst = v4_m_spec->ip4dst; 28299ce48e5aSMichal Kubecek } 28309ce48e5aSMichal Kubecek if (v4_m_spec->ip4src || 28319ce48e5aSMichal Kubecek v4_m_spec->ip4dst) { 28329ce48e5aSMichal Kubecek match->dissector.used_keys |= 28339ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS); 28349ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = 28359ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, ipv4); 28369ce48e5aSMichal Kubecek } 28379ce48e5aSMichal Kubecek if (v4_m_spec->psrc) { 28389ce48e5aSMichal Kubecek match->key.tp.src = v4_spec->psrc; 28399ce48e5aSMichal Kubecek match->mask.tp.src = v4_m_spec->psrc; 28409ce48e5aSMichal Kubecek } 28419ce48e5aSMichal Kubecek if (v4_m_spec->pdst) { 28429ce48e5aSMichal Kubecek match->key.tp.dst = v4_spec->pdst; 28439ce48e5aSMichal Kubecek match->mask.tp.dst = v4_m_spec->pdst; 28449ce48e5aSMichal Kubecek } 28459ce48e5aSMichal Kubecek if (v4_m_spec->psrc || 28469ce48e5aSMichal Kubecek v4_m_spec->pdst) { 28479ce48e5aSMichal Kubecek match->dissector.used_keys |= 28489ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_PORTS); 28499ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 28509ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, tp); 28519ce48e5aSMichal Kubecek } 28529ce48e5aSMichal Kubecek if (v4_m_spec->tos) { 28539ce48e5aSMichal Kubecek match->key.ip.tos = v4_spec->tos; 28549ce48e5aSMichal Kubecek match->mask.ip.tos = v4_m_spec->tos; 28559ce48e5aSMichal Kubecek match->dissector.used_keys |= 28569ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_IP); 28579ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 28589ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, ip); 28599ce48e5aSMichal Kubecek } 28609ce48e5aSMichal Kubecek } 28619ce48e5aSMichal Kubecek break; 28629ce48e5aSMichal Kubecek case TCP_V6_FLOW: 28639ce48e5aSMichal Kubecek case UDP_V6_FLOW: { 28649ce48e5aSMichal Kubecek const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; 28659ce48e5aSMichal Kubecek 28669ce48e5aSMichal Kubecek match->key.basic.n_proto = htons(ETH_P_IPV6); 28679ce48e5aSMichal Kubecek 28689ce48e5aSMichal Kubecek v6_spec = &fs->h_u.tcp_ip6_spec; 28699ce48e5aSMichal Kubecek v6_m_spec = &fs->m_u.tcp_ip6_spec; 28709ce48e5aSMichal Kubecek if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) { 28719ce48e5aSMichal Kubecek memcpy(&match->key.ipv6.src, v6_spec->ip6src, 28729ce48e5aSMichal Kubecek sizeof(match->key.ipv6.src)); 28739ce48e5aSMichal Kubecek memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, 28749ce48e5aSMichal Kubecek sizeof(match->mask.ipv6.src)); 28759ce48e5aSMichal Kubecek } 28769ce48e5aSMichal Kubecek if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) { 28779ce48e5aSMichal Kubecek memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, 28789ce48e5aSMichal Kubecek sizeof(match->key.ipv6.dst)); 28799ce48e5aSMichal Kubecek memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, 28809ce48e5aSMichal Kubecek sizeof(match->mask.ipv6.dst)); 28819ce48e5aSMichal Kubecek } 28829ce48e5aSMichal Kubecek if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) || 28839ce48e5aSMichal Kubecek memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) { 28849ce48e5aSMichal Kubecek match->dissector.used_keys |= 28859ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS); 28869ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = 28879ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, ipv6); 28889ce48e5aSMichal Kubecek } 28899ce48e5aSMichal Kubecek if (v6_m_spec->psrc) { 28909ce48e5aSMichal Kubecek match->key.tp.src = v6_spec->psrc; 28919ce48e5aSMichal Kubecek match->mask.tp.src = v6_m_spec->psrc; 28929ce48e5aSMichal Kubecek } 28939ce48e5aSMichal Kubecek if (v6_m_spec->pdst) { 28949ce48e5aSMichal Kubecek match->key.tp.dst = v6_spec->pdst; 28959ce48e5aSMichal Kubecek match->mask.tp.dst = v6_m_spec->pdst; 28969ce48e5aSMichal Kubecek } 28979ce48e5aSMichal Kubecek if (v6_m_spec->psrc || 28989ce48e5aSMichal Kubecek v6_m_spec->pdst) { 28999ce48e5aSMichal Kubecek match->dissector.used_keys |= 29009ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_PORTS); 29019ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = 29029ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, tp); 29039ce48e5aSMichal Kubecek } 29049ce48e5aSMichal Kubecek if (v6_m_spec->tclass) { 29059ce48e5aSMichal Kubecek match->key.ip.tos = v6_spec->tclass; 29069ce48e5aSMichal Kubecek match->mask.ip.tos = v6_m_spec->tclass; 29079ce48e5aSMichal Kubecek match->dissector.used_keys |= 29089ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_IP); 29099ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = 29109ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, ip); 29119ce48e5aSMichal Kubecek } 29129ce48e5aSMichal Kubecek } 29139ce48e5aSMichal Kubecek break; 29149ce48e5aSMichal Kubecek default: 29159ce48e5aSMichal Kubecek ethtool_rx_flow_rule_destroy(flow); 29169ce48e5aSMichal Kubecek return ERR_PTR(-EINVAL); 29179ce48e5aSMichal Kubecek } 29189ce48e5aSMichal Kubecek 29199ce48e5aSMichal Kubecek switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { 29209ce48e5aSMichal Kubecek case TCP_V4_FLOW: 29219ce48e5aSMichal Kubecek case TCP_V6_FLOW: 29229ce48e5aSMichal Kubecek match->key.basic.ip_proto = IPPROTO_TCP; 29239ce48e5aSMichal Kubecek break; 29249ce48e5aSMichal Kubecek case UDP_V4_FLOW: 29259ce48e5aSMichal Kubecek case UDP_V6_FLOW: 29269ce48e5aSMichal Kubecek match->key.basic.ip_proto = IPPROTO_UDP; 29279ce48e5aSMichal Kubecek break; 29289ce48e5aSMichal Kubecek } 29299ce48e5aSMichal Kubecek match->mask.basic.ip_proto = 0xff; 29309ce48e5aSMichal Kubecek 29319ce48e5aSMichal Kubecek match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC); 29329ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = 29339ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, basic); 29349ce48e5aSMichal Kubecek 29359ce48e5aSMichal Kubecek if (fs->flow_type & FLOW_EXT) { 29369ce48e5aSMichal Kubecek const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 29379ce48e5aSMichal Kubecek const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 29389ce48e5aSMichal Kubecek 29399ce48e5aSMichal Kubecek if (ext_m_spec->vlan_etype) { 29409ce48e5aSMichal Kubecek match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; 29419ce48e5aSMichal Kubecek match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; 29429ce48e5aSMichal Kubecek } 29439ce48e5aSMichal Kubecek 29449ce48e5aSMichal Kubecek if (ext_m_spec->vlan_tci) { 29459ce48e5aSMichal Kubecek match->key.vlan.vlan_id = 29469ce48e5aSMichal Kubecek ntohs(ext_h_spec->vlan_tci) & 0x0fff; 29479ce48e5aSMichal Kubecek match->mask.vlan.vlan_id = 29489ce48e5aSMichal Kubecek ntohs(ext_m_spec->vlan_tci) & 0x0fff; 29499ce48e5aSMichal Kubecek 29509ce48e5aSMichal Kubecek match->key.vlan.vlan_dei = 29519ce48e5aSMichal Kubecek !!(ext_h_spec->vlan_tci & htons(0x1000)); 29529ce48e5aSMichal Kubecek match->mask.vlan.vlan_dei = 29539ce48e5aSMichal Kubecek !!(ext_m_spec->vlan_tci & htons(0x1000)); 29549ce48e5aSMichal Kubecek 29559ce48e5aSMichal Kubecek match->key.vlan.vlan_priority = 29569ce48e5aSMichal Kubecek (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; 29579ce48e5aSMichal Kubecek match->mask.vlan.vlan_priority = 29589ce48e5aSMichal Kubecek (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; 29599ce48e5aSMichal Kubecek } 29609ce48e5aSMichal Kubecek 29619ce48e5aSMichal Kubecek if (ext_m_spec->vlan_etype || 29629ce48e5aSMichal Kubecek ext_m_spec->vlan_tci) { 29639ce48e5aSMichal Kubecek match->dissector.used_keys |= 29649ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_VLAN); 29659ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = 29669ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, vlan); 29679ce48e5aSMichal Kubecek } 29689ce48e5aSMichal Kubecek } 29699ce48e5aSMichal Kubecek if (fs->flow_type & FLOW_MAC_EXT) { 29709ce48e5aSMichal Kubecek const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; 29719ce48e5aSMichal Kubecek const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; 29729ce48e5aSMichal Kubecek 29739ce48e5aSMichal Kubecek memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, 29749ce48e5aSMichal Kubecek ETH_ALEN); 29759ce48e5aSMichal Kubecek memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, 29769ce48e5aSMichal Kubecek ETH_ALEN); 29779ce48e5aSMichal Kubecek 29789ce48e5aSMichal Kubecek match->dissector.used_keys |= 29799ce48e5aSMichal Kubecek BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS); 29809ce48e5aSMichal Kubecek match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = 29819ce48e5aSMichal Kubecek offsetof(struct ethtool_rx_flow_key, eth_addrs); 29829ce48e5aSMichal Kubecek } 29839ce48e5aSMichal Kubecek 29849ce48e5aSMichal Kubecek act = &flow->rule->action.entries[0]; 29859ce48e5aSMichal Kubecek switch (fs->ring_cookie) { 29869ce48e5aSMichal Kubecek case RX_CLS_FLOW_DISC: 29879ce48e5aSMichal Kubecek act->id = FLOW_ACTION_DROP; 29889ce48e5aSMichal Kubecek break; 29899ce48e5aSMichal Kubecek case RX_CLS_FLOW_WAKE: 29909ce48e5aSMichal Kubecek act->id = FLOW_ACTION_WAKE; 29919ce48e5aSMichal Kubecek break; 29929ce48e5aSMichal Kubecek default: 29939ce48e5aSMichal Kubecek act->id = FLOW_ACTION_QUEUE; 29949ce48e5aSMichal Kubecek if (fs->flow_type & FLOW_RSS) 29959ce48e5aSMichal Kubecek act->queue.ctx = input->rss_ctx; 29969ce48e5aSMichal Kubecek 29979ce48e5aSMichal Kubecek act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); 29989ce48e5aSMichal Kubecek act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); 29999ce48e5aSMichal Kubecek break; 30009ce48e5aSMichal Kubecek } 30019ce48e5aSMichal Kubecek 30029ce48e5aSMichal Kubecek return flow; 30039ce48e5aSMichal Kubecek } 30049ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_rx_flow_rule_create); 30059ce48e5aSMichal Kubecek 30069ce48e5aSMichal Kubecek void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) 30079ce48e5aSMichal Kubecek { 30089ce48e5aSMichal Kubecek kfree(flow->rule); 30099ce48e5aSMichal Kubecek kfree(flow); 30109ce48e5aSMichal Kubecek } 30119ce48e5aSMichal Kubecek EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); 3012