| /* |
| * net/core/ethtool.c - Ethtool ioctl handler |
| * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> |
| * |
| * This file is where we call all the ethtool_ops commands to get |
| * the information ethtool needs. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/capability.h> |
| #include <linux/errno.h> |
| #include <linux/ethtool.h> |
| #include <linux/netdevice.h> |
| #include <linux/net_tstamp.h> |
| #include <linux/phy.h> |
| #include <linux/bitops.h> |
| #include <linux/uaccess.h> |
| #include <linux/vmalloc.h> |
| #include <linux/sfp.h> |
| #include <linux/slab.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/sched/signal.h> |
| #include <linux/net.h> |
| #include <net/devlink.h> |
| #include <net/xdp_sock.h> |
| #include <net/flow_offload.h> |
| |
| /* |
| * Some useful ethtool_ops methods that're device independent. |
| * If we find that all drivers want to do the same thing here, |
| * we can turn these into dev_() function calls. |
| */ |
| |
| u32 ethtool_op_get_link(struct net_device *dev) |
| { |
| return netif_carrier_ok(dev) ? 1 : 0; |
| } |
| EXPORT_SYMBOL(ethtool_op_get_link); |
| |
| int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) |
| { |
| info->so_timestamping = |
| SOF_TIMESTAMPING_TX_SOFTWARE | |
| SOF_TIMESTAMPING_RX_SOFTWARE | |
| SOF_TIMESTAMPING_SOFTWARE; |
| info->phc_index = -1; |
| return 0; |
| } |
| EXPORT_SYMBOL(ethtool_op_get_ts_info); |
| |
| /* Handlers for each ethtool command */ |
| |
| #define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32) |
| |
| static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = { |
| [NETIF_F_SG_BIT] = "tx-scatter-gather", |
| [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4", |
| [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic", |
| [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6", |
| [NETIF_F_HIGHDMA_BIT] = "highdma", |
| [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist", |
| [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert", |
| |
| [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse", |
| [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter", |
| [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert", |
| [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse", |
| [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter", |
| [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged", |
| [NETIF_F_GSO_BIT] = "tx-generic-segmentation", |
| [NETIF_F_LLTX_BIT] = "tx-lockless", |
| [NETIF_F_NETNS_LOCAL_BIT] = "netns-local", |
| [NETIF_F_GRO_BIT] = "rx-gro", |
| [NETIF_F_GRO_HW_BIT] = "rx-gro-hw", |
| [NETIF_F_LRO_BIT] = "rx-lro", |
| |
| [NETIF_F_TSO_BIT] = "tx-tcp-segmentation", |
| [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust", |
| [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation", |
| [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation", |
| [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation", |
| [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation", |
| [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation", |
| [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation", |
| [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation", |
| [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation", |
| [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation", |
| [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation", |
| [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial", |
| [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation", |
| [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation", |
| [NETIF_F_GSO_UDP_L4_BIT] = "tx-udp-segmentation", |
| |
| [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc", |
| [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp", |
| [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu", |
| [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter", |
| [NETIF_F_RXHASH_BIT] = "rx-hashing", |
| [NETIF_F_RXCSUM_BIT] = "rx-checksum", |
| [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy", |
| [NETIF_F_LOOPBACK_BIT] = "loopback", |
| [NETIF_F_RXFCS_BIT] = "rx-fcs", |
| [NETIF_F_RXALL_BIT] = "rx-all", |
| [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload", |
| [NETIF_F_HW_TC_BIT] = "hw-tc-offload", |
| [NETIF_F_HW_ESP_BIT] = "esp-hw-offload", |
| [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload", |
| [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload", |
| [NETIF_F_HW_TLS_RECORD_BIT] = "tls-hw-record", |
| [NETIF_F_HW_TLS_TX_BIT] = "tls-hw-tx-offload", |
| [NETIF_F_HW_TLS_RX_BIT] = "tls-hw-rx-offload", |
| }; |
| |
| static const char |
| rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = { |
| [ETH_RSS_HASH_TOP_BIT] = "toeplitz", |
| [ETH_RSS_HASH_XOR_BIT] = "xor", |
| [ETH_RSS_HASH_CRC32_BIT] = "crc32", |
| }; |
| |
| static const char |
| tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = { |
| [ETHTOOL_ID_UNSPEC] = "Unspec", |
| [ETHTOOL_RX_COPYBREAK] = "rx-copybreak", |
| [ETHTOOL_TX_COPYBREAK] = "tx-copybreak", |
| [ETHTOOL_PFC_PREVENTION_TOUT] = "pfc-prevention-tout", |
| }; |
| |
| static const char |
| phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = { |
| [ETHTOOL_ID_UNSPEC] = "Unspec", |
| [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift", |
| }; |
| |
| static int ethtool_get_features(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_gfeatures cmd = { |
| .cmd = ETHTOOL_GFEATURES, |
| .size = ETHTOOL_DEV_FEATURE_WORDS, |
| }; |
| struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; |
| u32 __user *sizeaddr; |
| u32 copy_size; |
| int i; |
| |
| /* in case feature bits run out again */ |
| BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); |
| |
| for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { |
| features[i].available = (u32)(dev->hw_features >> (32 * i)); |
| features[i].requested = (u32)(dev->wanted_features >> (32 * i)); |
| features[i].active = (u32)(dev->features >> (32 * i)); |
| features[i].never_changed = |
| (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); |
| } |
| |
| sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); |
| if (get_user(copy_size, sizeaddr)) |
| return -EFAULT; |
| |
| if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) |
| copy_size = ETHTOOL_DEV_FEATURE_WORDS; |
| |
| if (copy_to_user(useraddr, &cmd, sizeof(cmd))) |
| return -EFAULT; |
| useraddr += sizeof(cmd); |
| if (copy_to_user(useraddr, features, copy_size * sizeof(*features))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| static int ethtool_set_features(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_sfeatures cmd; |
| struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; |
| netdev_features_t wanted = 0, valid = 0; |
| int i, ret = 0; |
| |
| if (copy_from_user(&cmd, useraddr, sizeof(cmd))) |
| return -EFAULT; |
| useraddr += sizeof(cmd); |
| |
| if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) |
| return -EINVAL; |
| |
| if (copy_from_user(features, useraddr, sizeof(features))) |
| return -EFAULT; |
| |
| for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { |
| valid |= (netdev_features_t)features[i].valid << (32 * i); |
| wanted |= (netdev_features_t)features[i].requested << (32 * i); |
| } |
| |
| if (valid & ~NETIF_F_ETHTOOL_BITS) |
| return -EINVAL; |
| |
| if (valid & ~dev->hw_features) { |
| valid &= dev->hw_features; |
| ret |= ETHTOOL_F_UNSUPPORTED; |
| } |
| |
| dev->wanted_features &= ~valid; |
| dev->wanted_features |= wanted & valid; |
| __netdev_update_features(dev); |
| |
| if ((dev->wanted_features ^ dev->features) & valid) |
| ret |= ETHTOOL_F_WISH; |
| |
| return ret; |
| } |
| |
| static int __ethtool_get_sset_count(struct net_device *dev, int sset) |
| { |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| |
| if (sset == ETH_SS_FEATURES) |
| return ARRAY_SIZE(netdev_features_strings); |
| |
| if (sset == ETH_SS_RSS_HASH_FUNCS) |
| return ARRAY_SIZE(rss_hash_func_strings); |
| |
| if (sset == ETH_SS_TUNABLES) |
| return ARRAY_SIZE(tunable_strings); |
| |
| if (sset == ETH_SS_PHY_TUNABLES) |
| return ARRAY_SIZE(phy_tunable_strings); |
| |
| if (sset == ETH_SS_PHY_STATS && dev->phydev && |
| !ops->get_ethtool_phy_stats) |
| return phy_ethtool_get_sset_count(dev->phydev); |
| |
| if (ops->get_sset_count && ops->get_strings) |
| return ops->get_sset_count(dev, sset); |
| else |
| return -EOPNOTSUPP; |
| } |
| |
| static void __ethtool_get_strings(struct net_device *dev, |
| u32 stringset, u8 *data) |
| { |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| |
| if (stringset == ETH_SS_FEATURES) |
| memcpy(data, netdev_features_strings, |
| sizeof(netdev_features_strings)); |
| else if (stringset == ETH_SS_RSS_HASH_FUNCS) |
| memcpy(data, rss_hash_func_strings, |
| sizeof(rss_hash_func_strings)); |
| else if (stringset == ETH_SS_TUNABLES) |
| memcpy(data, tunable_strings, sizeof(tunable_strings)); |
| else if (stringset == ETH_SS_PHY_TUNABLES) |
| memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); |
| else if (stringset == ETH_SS_PHY_STATS && dev->phydev && |
| !ops->get_ethtool_phy_stats) |
| phy_ethtool_get_strings(dev->phydev, data); |
| else |
| /* ops->get_strings is valid because checked earlier */ |
| ops->get_strings(dev, stringset, data); |
| } |
| |
| static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) |
| { |
| /* feature masks of legacy discrete ethtool ops */ |
| |
| switch (eth_cmd) { |
| case ETHTOOL_GTXCSUM: |
| case ETHTOOL_STXCSUM: |
| return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC; |
| case ETHTOOL_GRXCSUM: |
| case ETHTOOL_SRXCSUM: |
| return NETIF_F_RXCSUM; |
| case ETHTOOL_GSG: |
| case ETHTOOL_SSG: |
| return NETIF_F_SG; |
| case ETHTOOL_GTSO: |
| case ETHTOOL_STSO: |
| return NETIF_F_ALL_TSO; |
| case ETHTOOL_GGSO: |
| case ETHTOOL_SGSO: |
| return NETIF_F_GSO; |
| case ETHTOOL_GGRO: |
| case ETHTOOL_SGRO: |
| return NETIF_F_GRO; |
| default: |
| BUG(); |
| } |
| } |
| |
| static int ethtool_get_one_feature(struct net_device *dev, |
| char __user *useraddr, u32 ethcmd) |
| { |
| netdev_features_t mask = ethtool_get_feature_mask(ethcmd); |
| struct ethtool_value edata = { |
| .cmd = ethcmd, |
| .data = !!(dev->features & mask), |
| }; |
| |
| if (copy_to_user(useraddr, &edata, sizeof(edata))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_one_feature(struct net_device *dev, |
| void __user *useraddr, u32 ethcmd) |
| { |
| struct ethtool_value edata; |
| netdev_features_t mask; |
| |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| |
| mask = ethtool_get_feature_mask(ethcmd); |
| mask &= dev->hw_features; |
| if (!mask) |
| return -EOPNOTSUPP; |
| |
| if (edata.data) |
| dev->wanted_features |= mask; |
| else |
| dev->wanted_features &= ~mask; |
| |
| __netdev_update_features(dev); |
| |
| return 0; |
| } |
| |
| #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ |
| ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) |
| #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ |
| NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ |
| NETIF_F_RXHASH) |
| |
| static u32 __ethtool_get_flags(struct net_device *dev) |
| { |
| u32 flags = 0; |
| |
| if (dev->features & NETIF_F_LRO) |
| flags |= ETH_FLAG_LRO; |
| if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) |
| flags |= ETH_FLAG_RXVLAN; |
| if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) |
| flags |= ETH_FLAG_TXVLAN; |
| if (dev->features & NETIF_F_NTUPLE) |
| flags |= ETH_FLAG_NTUPLE; |
| if (dev->features & NETIF_F_RXHASH) |
| flags |= ETH_FLAG_RXHASH; |
| |
| return flags; |
| } |
| |
| static int __ethtool_set_flags(struct net_device *dev, u32 data) |
| { |
| netdev_features_t features = 0, changed; |
| |
| if (data & ~ETH_ALL_FLAGS) |
| return -EINVAL; |
| |
| if (data & ETH_FLAG_LRO) |
| features |= NETIF_F_LRO; |
| if (data & ETH_FLAG_RXVLAN) |
| features |= NETIF_F_HW_VLAN_CTAG_RX; |
| if (data & ETH_FLAG_TXVLAN) |
| features |= NETIF_F_HW_VLAN_CTAG_TX; |
| if (data & ETH_FLAG_NTUPLE) |
| features |= NETIF_F_NTUPLE; |
| if (data & ETH_FLAG_RXHASH) |
| features |= NETIF_F_RXHASH; |
| |
| /* allow changing only bits set in hw_features */ |
| changed = (features ^ dev->features) & ETH_ALL_FEATURES; |
| if (changed & ~dev->hw_features) |
| return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; |
| |
| dev->wanted_features = |
| (dev->wanted_features & ~changed) | (features & changed); |
| |
| __netdev_update_features(dev); |
| |
| return 0; |
| } |
| |
| /* Given two link masks, AND them together and save the result in dst. */ |
| void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, |
| struct ethtool_link_ksettings *src) |
| { |
| unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); |
| unsigned int idx = 0; |
| |
| for (; idx < size; idx++) { |
| dst->link_modes.supported[idx] &= |
| src->link_modes.supported[idx]; |
| dst->link_modes.advertising[idx] &= |
| src->link_modes.advertising[idx]; |
| } |
| } |
| EXPORT_SYMBOL(ethtool_intersect_link_masks); |
| |
| void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, |
| u32 legacy_u32) |
| { |
| bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS); |
| dst[0] = legacy_u32; |
| } |
| EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); |
| |
| /* return false if src had higher bits set. lower bits always updated. */ |
| bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, |
| const unsigned long *src) |
| { |
| bool retval = true; |
| |
| /* TODO: following test will soon always be true */ |
| if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) { |
| __ETHTOOL_DECLARE_LINK_MODE_MASK(ext); |
| |
| bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS); |
| bitmap_fill(ext, 32); |
| bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS); |
| if (bitmap_intersects(ext, src, |
| __ETHTOOL_LINK_MODE_MASK_NBITS)) { |
| /* src mask goes beyond bit 31 */ |
| retval = false; |
| } |
| } |
| *legacy_u32 = src[0]; |
| return retval; |
| } |
| EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); |
| |
| /* return false if legacy contained non-0 deprecated fields |
| * maxtxpkt/maxrxpkt. rest of ksettings always updated |
| */ |
| static bool |
| convert_legacy_settings_to_link_ksettings( |
| struct ethtool_link_ksettings *link_ksettings, |
| const struct ethtool_cmd *legacy_settings) |
| { |
| bool retval = true; |
| |
| memset(link_ksettings, 0, sizeof(*link_ksettings)); |
| |
| /* This is used to tell users that driver is still using these |
| * deprecated legacy fields, and they should not use |
| * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS |
| */ |
| if (legacy_settings->maxtxpkt || |
| legacy_settings->maxrxpkt) |
| retval = false; |
| |
| ethtool_convert_legacy_u32_to_link_mode( |
| link_ksettings->link_modes.supported, |
| legacy_settings->supported); |
| ethtool_convert_legacy_u32_to_link_mode( |
| link_ksettings->link_modes.advertising, |
| legacy_settings->advertising); |
| ethtool_convert_legacy_u32_to_link_mode( |
| link_ksettings->link_modes.lp_advertising, |
| legacy_settings->lp_advertising); |
| link_ksettings->base.speed |
| = ethtool_cmd_speed(legacy_settings); |
| link_ksettings->base.duplex |
| = legacy_settings->duplex; |
| link_ksettings->base.port |
| = legacy_settings->port; |
| link_ksettings->base.phy_address |
| = legacy_settings->phy_address; |
| link_ksettings->base.autoneg |
| = legacy_settings->autoneg; |
| link_ksettings->base.mdio_support |
| = legacy_settings->mdio_support; |
| link_ksettings->base.eth_tp_mdix |
| = legacy_settings->eth_tp_mdix; |
| link_ksettings->base.eth_tp_mdix_ctrl |
| = legacy_settings->eth_tp_mdix_ctrl; |
| return retval; |
| } |
| |
| /* return false if ksettings link modes had higher bits |
| * set. legacy_settings always updated (best effort) |
| */ |
| static bool |
| convert_link_ksettings_to_legacy_settings( |
| struct ethtool_cmd *legacy_settings, |
| const struct ethtool_link_ksettings *link_ksettings) |
| { |
| bool retval = true; |
| |
| memset(legacy_settings, 0, sizeof(*legacy_settings)); |
| /* this also clears the deprecated fields in legacy structure: |
| * __u8 transceiver; |
| * __u32 maxtxpkt; |
| * __u32 maxrxpkt; |
| */ |
| |
| retval &= ethtool_convert_link_mode_to_legacy_u32( |
| &legacy_settings->supported, |
| link_ksettings->link_modes.supported); |
| retval &= ethtool_convert_link_mode_to_legacy_u32( |
| &legacy_settings->advertising, |
| link_ksettings->link_modes.advertising); |
| retval &= ethtool_convert_link_mode_to_legacy_u32( |
| &legacy_settings->lp_advertising, |
| link_ksettings->link_modes.lp_advertising); |
| ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); |
| legacy_settings->duplex |
| = link_ksettings->base.duplex; |
| legacy_settings->port |
| = link_ksettings->base.port; |
| legacy_settings->phy_address |
| = link_ksettings->base.phy_address; |
| legacy_settings->autoneg |
| = link_ksettings->base.autoneg; |
| legacy_settings->mdio_support |
| = link_ksettings->base.mdio_support; |
| legacy_settings->eth_tp_mdix |
| = link_ksettings->base.eth_tp_mdix; |
| legacy_settings->eth_tp_mdix_ctrl |
| = link_ksettings->base.eth_tp_mdix_ctrl; |
| legacy_settings->transceiver |
| = link_ksettings->base.transceiver; |
| return retval; |
| } |
| |
| /* number of 32-bit words to store the user's link mode bitmaps */ |
| #define __ETHTOOL_LINK_MODE_MASK_NU32 \ |
| DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) |
| |
| /* layout of the struct passed from/to userland */ |
| struct ethtool_link_usettings { |
| struct ethtool_link_settings base; |
| struct { |
| __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; |
| __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; |
| __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; |
| } link_modes; |
| }; |
| |
| /* Internal kernel helper to query a device ethtool_link_settings. */ |
| int __ethtool_get_link_ksettings(struct net_device *dev, |
| struct ethtool_link_ksettings *link_ksettings) |
| { |
| ASSERT_RTNL(); |
| |
| if (!dev->ethtool_ops->get_link_ksettings) |
| return -EOPNOTSUPP; |
| |
| memset(link_ksettings, 0, sizeof(*link_ksettings)); |
| return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); |
| } |
| EXPORT_SYMBOL(__ethtool_get_link_ksettings); |
| |
| /* convert ethtool_link_usettings in user space to a kernel internal |
| * ethtool_link_ksettings. return 0 on success, errno on error. |
| */ |
| static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, |
| const void __user *from) |
| { |
| struct ethtool_link_usettings link_usettings; |
| |
| if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) |
| return -EFAULT; |
| |
| memcpy(&to->base, &link_usettings.base, sizeof(to->base)); |
| bitmap_from_arr32(to->link_modes.supported, |
| link_usettings.link_modes.supported, |
| __ETHTOOL_LINK_MODE_MASK_NBITS); |
| bitmap_from_arr32(to->link_modes.advertising, |
| link_usettings.link_modes.advertising, |
| __ETHTOOL_LINK_MODE_MASK_NBITS); |
| bitmap_from_arr32(to->link_modes.lp_advertising, |
| link_usettings.link_modes.lp_advertising, |
| __ETHTOOL_LINK_MODE_MASK_NBITS); |
| |
| return 0; |
| } |
| |
| /* convert a kernel internal ethtool_link_ksettings to |
| * ethtool_link_usettings in user space. return 0 on success, errno on |
| * error. |
| */ |
| static int |
| store_link_ksettings_for_user(void __user *to, |
| const struct ethtool_link_ksettings *from) |
| { |
| struct ethtool_link_usettings link_usettings; |
| |
| memcpy(&link_usettings.base, &from->base, sizeof(link_usettings)); |
| bitmap_to_arr32(link_usettings.link_modes.supported, |
| from->link_modes.supported, |
| __ETHTOOL_LINK_MODE_MASK_NBITS); |
| bitmap_to_arr32(link_usettings.link_modes.advertising, |
| from->link_modes.advertising, |
| __ETHTOOL_LINK_MODE_MASK_NBITS); |
| bitmap_to_arr32(link_usettings.link_modes.lp_advertising, |
| from->link_modes.lp_advertising, |
| __ETHTOOL_LINK_MODE_MASK_NBITS); |
| |
| if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| /* Query device for its ethtool_link_settings. */ |
| static int ethtool_get_link_ksettings(struct net_device *dev, |
| void __user *useraddr) |
| { |
| int err = 0; |
| struct ethtool_link_ksettings link_ksettings; |
| |
| ASSERT_RTNL(); |
| if (!dev->ethtool_ops->get_link_ksettings) |
| return -EOPNOTSUPP; |
| |
| /* handle bitmap nbits handshake */ |
| if (copy_from_user(&link_ksettings.base, useraddr, |
| sizeof(link_ksettings.base))) |
| return -EFAULT; |
| |
| if (__ETHTOOL_LINK_MODE_MASK_NU32 |
| != link_ksettings.base.link_mode_masks_nwords) { |
| /* wrong link mode nbits requested */ |
| memset(&link_ksettings, 0, sizeof(link_ksettings)); |
| link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; |
| /* send back number of words required as negative val */ |
| compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, |
| "need too many bits for link modes!"); |
| link_ksettings.base.link_mode_masks_nwords |
| = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); |
| |
| /* copy the base fields back to user, not the link |
| * mode bitmaps |
| */ |
| if (copy_to_user(useraddr, &link_ksettings.base, |
| sizeof(link_ksettings.base))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| /* handshake successful: user/kernel agree on |
| * link_mode_masks_nwords |
| */ |
| |
| memset(&link_ksettings, 0, sizeof(link_ksettings)); |
| err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); |
| if (err < 0) |
| return err; |
| |
| /* make sure we tell the right values to user */ |
| link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; |
| link_ksettings.base.link_mode_masks_nwords |
| = __ETHTOOL_LINK_MODE_MASK_NU32; |
| |
| return store_link_ksettings_for_user(useraddr, &link_ksettings); |
| } |
| |
| /* Update device ethtool_link_settings. */ |
| static int ethtool_set_link_ksettings(struct net_device *dev, |
| void __user *useraddr) |
| { |
| int err; |
| struct ethtool_link_ksettings link_ksettings; |
| |
| ASSERT_RTNL(); |
| |
| if (!dev->ethtool_ops->set_link_ksettings) |
| return -EOPNOTSUPP; |
| |
| /* make sure nbits field has expected value */ |
| if (copy_from_user(&link_ksettings.base, useraddr, |
| sizeof(link_ksettings.base))) |
| return -EFAULT; |
| |
| if (__ETHTOOL_LINK_MODE_MASK_NU32 |
| != link_ksettings.base.link_mode_masks_nwords) |
| return -EINVAL; |
| |
| /* copy the whole structure, now that we know it has expected |
| * format |
| */ |
| err = load_link_ksettings_from_user(&link_ksettings, useraddr); |
| if (err) |
| return err; |
| |
| /* re-check nwords field, just in case */ |
| if (__ETHTOOL_LINK_MODE_MASK_NU32 |
| != link_ksettings.base.link_mode_masks_nwords) |
| return -EINVAL; |
| |
| return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); |
| } |
| |
| /* Query device for its ethtool_cmd settings. |
| * |
| * Backward compatibility note: for compatibility with legacy ethtool, this is |
| * now implemented via get_link_ksettings. When driver reports higher link mode |
| * bits, a kernel warning is logged once (with name of 1st driver/device) to |
| * recommend user to upgrade ethtool, but the command is successful (only the |
| * lower link mode bits reported back to user). Deprecated fields from |
| * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. |
| */ |
| static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_link_ksettings link_ksettings; |
| struct ethtool_cmd cmd; |
| int err; |
| |
| ASSERT_RTNL(); |
| if (!dev->ethtool_ops->get_link_ksettings) |
| return -EOPNOTSUPP; |
| |
| memset(&link_ksettings, 0, sizeof(link_ksettings)); |
| err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); |
| if (err < 0) |
| return err; |
| convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); |
| |
| /* send a sensible cmd tag back to user */ |
| cmd.cmd = ETHTOOL_GSET; |
| |
| if (copy_to_user(useraddr, &cmd, sizeof(cmd))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| /* Update device link settings with given ethtool_cmd. |
| * |
| * Backward compatibility note: for compatibility with legacy ethtool, this is |
| * now always implemented via set_link_settings. When user's request updates |
| * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel |
| * warning is logged once (with name of 1st driver/device) to recommend user to |
| * upgrade ethtool, and the request is rejected. |
| */ |
| static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_link_ksettings link_ksettings; |
| struct ethtool_cmd cmd; |
| |
| ASSERT_RTNL(); |
| |
| if (copy_from_user(&cmd, useraddr, sizeof(cmd))) |
| return -EFAULT; |
| if (!dev->ethtool_ops->set_link_ksettings) |
| return -EOPNOTSUPP; |
| |
| if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) |
| return -EINVAL; |
| link_ksettings.base.link_mode_masks_nwords = |
| __ETHTOOL_LINK_MODE_MASK_NU32; |
| return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); |
| } |
| |
| static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev, |
| void __user *useraddr) |
| { |
| struct ethtool_drvinfo info; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| |
| memset(&info, 0, sizeof(info)); |
| info.cmd = ETHTOOL_GDRVINFO; |
| if (ops->get_drvinfo) { |
| ops->get_drvinfo(dev, &info); |
| } else if (dev->dev.parent && dev->dev.parent->driver) { |
| strlcpy(info.bus_info, dev_name(dev->dev.parent), |
| sizeof(info.bus_info)); |
| strlcpy(info.driver, dev->dev.parent->driver->name, |
| sizeof(info.driver)); |
| } else { |
| return -EOPNOTSUPP; |
| } |
| |
| /* |
| * this method of obtaining string set info is deprecated; |
| * Use ETHTOOL_GSSET_INFO instead. |
| */ |
| if (ops->get_sset_count) { |
| int rc; |
| |
| rc = ops->get_sset_count(dev, ETH_SS_TEST); |
| if (rc >= 0) |
| info.testinfo_len = rc; |
| rc = ops->get_sset_count(dev, ETH_SS_STATS); |
| if (rc >= 0) |
| info.n_stats = rc; |
| rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); |
| if (rc >= 0) |
| info.n_priv_flags = rc; |
| } |
| if (ops->get_regs_len) { |
| int ret = ops->get_regs_len(dev); |
| |
| if (ret > 0) |
| info.regdump_len = ret; |
| } |
| |
| if (ops->get_eeprom_len) |
| info.eedump_len = ops->get_eeprom_len(dev); |
| |
| if (!info.fw_version[0]) |
| devlink_compat_running_version(dev, info.fw_version, |
| sizeof(info.fw_version)); |
| |
| if (copy_to_user(useraddr, &info, sizeof(info))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, |
| void __user *useraddr) |
| { |
| struct ethtool_sset_info info; |
| u64 sset_mask; |
| int i, idx = 0, n_bits = 0, ret, rc; |
| u32 *info_buf = NULL; |
| |
| if (copy_from_user(&info, useraddr, sizeof(info))) |
| return -EFAULT; |
| |
| /* store copy of mask, because we zero struct later on */ |
| sset_mask = info.sset_mask; |
| if (!sset_mask) |
| return 0; |
| |
| /* calculate size of return buffer */ |
| n_bits = hweight64(sset_mask); |
| |
| memset(&info, 0, sizeof(info)); |
| info.cmd = ETHTOOL_GSSET_INFO; |
| |
| info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); |
| if (!info_buf) |
| return -ENOMEM; |
| |
| /* |
| * fill return buffer based on input bitmask and successful |
| * get_sset_count return |
| */ |
| for (i = 0; i < 64; i++) { |
| if (!(sset_mask & (1ULL << i))) |
| continue; |
| |
| rc = __ethtool_get_sset_count(dev, i); |
| if (rc >= 0) { |
| info.sset_mask |= (1ULL << i); |
| info_buf[idx++] = rc; |
| } |
| } |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, &info, sizeof(info))) |
| goto out; |
| |
| useraddr += offsetof(struct ethtool_sset_info, data); |
| if (copy_to_user(useraddr, info_buf, idx * sizeof(u32))) |
| goto out; |
| |
| ret = 0; |
| |
| out: |
| kfree(info_buf); |
| return ret; |
| } |
| |
| static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, |
| u32 cmd, void __user *useraddr) |
| { |
| struct ethtool_rxnfc info; |
| size_t info_size = sizeof(info); |
| int rc; |
| |
| if (!dev->ethtool_ops->set_rxnfc) |
| return -EOPNOTSUPP; |
| |
| /* struct ethtool_rxnfc was originally defined for |
| * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data |
| * members. User-space might still be using that |
| * definition. */ |
| if (cmd == ETHTOOL_SRXFH) |
| info_size = (offsetof(struct ethtool_rxnfc, data) + |
| sizeof(info.data)); |
| |
| if (copy_from_user(&info, useraddr, info_size)) |
| return -EFAULT; |
| |
| rc = dev->ethtool_ops->set_rxnfc(dev, &info); |
| if (rc) |
| return rc; |
| |
| if (cmd == ETHTOOL_SRXCLSRLINS && |
| copy_to_user(useraddr, &info, info_size)) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, |
| u32 cmd, void __user *useraddr) |
| { |
| struct ethtool_rxnfc info; |
| size_t info_size = sizeof(info); |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| int ret; |
| void *rule_buf = NULL; |
| |
| if (!ops->get_rxnfc) |
| return -EOPNOTSUPP; |
| |
| /* struct ethtool_rxnfc was originally defined for |
| * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data |
| * members. User-space might still be using that |
| * definition. */ |
| if (cmd == ETHTOOL_GRXFH) |
| info_size = (offsetof(struct ethtool_rxnfc, data) + |
| sizeof(info.data)); |
| |
| if (copy_from_user(&info, useraddr, info_size)) |
| return -EFAULT; |
| |
| /* If FLOW_RSS was requested then user-space must be using the |
| * new definition, as FLOW_RSS is newer. |
| */ |
| if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) { |
| info_size = sizeof(info); |
| if (copy_from_user(&info, useraddr, info_size)) |
| return -EFAULT; |
| /* Since malicious users may modify the original data, |
| * we need to check whether FLOW_RSS is still requested. |
| */ |
| if (!(info.flow_type & FLOW_RSS)) |
| return -EINVAL; |
| } |
| |
| if (info.cmd != cmd) |
| return -EINVAL; |
| |
| if (info.cmd == ETHTOOL_GRXCLSRLALL) { |
| if (info.rule_cnt > 0) { |
| if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) |
| rule_buf = kcalloc(info.rule_cnt, sizeof(u32), |
| GFP_USER); |
| if (!rule_buf) |
| return -ENOMEM; |
| } |
| } |
| |
| ret = ops->get_rxnfc(dev, &info, rule_buf); |
| if (ret < 0) |
| goto err_out; |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, &info, info_size)) |
| goto err_out; |
| |
| if (rule_buf) { |
| useraddr += offsetof(struct ethtool_rxnfc, rule_locs); |
| if (copy_to_user(useraddr, rule_buf, |
| info.rule_cnt * sizeof(u32))) |
| goto err_out; |
| } |
| ret = 0; |
| |
| err_out: |
| kfree(rule_buf); |
| |
| return ret; |
| } |
| |
| static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, |
| struct ethtool_rxnfc *rx_rings, |
| u32 size) |
| { |
| int i; |
| |
| if (copy_from_user(indir, useraddr, size * sizeof(indir[0]))) |
| return -EFAULT; |
| |
| /* Validate ring indices */ |
| for (i = 0; i < size; i++) |
| if (indir[i] >= rx_rings->data) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
| |
| void netdev_rss_key_fill(void *buffer, size_t len) |
| { |
| BUG_ON(len > sizeof(netdev_rss_key)); |
| net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); |
| memcpy(buffer, netdev_rss_key, len); |
| } |
| EXPORT_SYMBOL(netdev_rss_key_fill); |
| |
| static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max) |
| { |
| u32 dev_size, current_max = 0; |
| u32 *indir; |
| int ret; |
| |
| if (!dev->ethtool_ops->get_rxfh_indir_size || |
| !dev->ethtool_ops->get_rxfh) |
| return -EOPNOTSUPP; |
| dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); |
| if (dev_size == 0) |
| return -EOPNOTSUPP; |
| |
| indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); |
| if (!indir) |
| return -ENOMEM; |
| |
| ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); |
| if (ret) |
| goto out; |
| |
| while (dev_size--) |
| current_max = max(current_max, indir[dev_size]); |
| |
| *max = current_max; |
| |
| out: |
| kfree(indir); |
| return ret; |
| } |
| |
| static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, |
| void __user *useraddr) |
| { |
| u32 user_size, dev_size; |
| u32 *indir; |
| int ret; |
| |
| if (!dev->ethtool_ops->get_rxfh_indir_size || |
| !dev->ethtool_ops->get_rxfh) |
| return -EOPNOTSUPP; |
| dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); |
| if (dev_size == 0) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&user_size, |
| useraddr + offsetof(struct ethtool_rxfh_indir, size), |
| sizeof(user_size))) |
| return -EFAULT; |
| |
| if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), |
| &dev_size, sizeof(dev_size))) |
| return -EFAULT; |
| |
| /* If the user buffer size is 0, this is just a query for the |
| * device table size. Otherwise, if it's smaller than the |
| * device table size it's an error. |
| */ |
| if (user_size < dev_size) |
| return user_size == 0 ? 0 : -EINVAL; |
| |
| indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); |
| if (!indir) |
| return -ENOMEM; |
| |
| ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); |
| if (ret) |
| goto out; |
| |
| if (copy_to_user(useraddr + |
| offsetof(struct ethtool_rxfh_indir, ring_index[0]), |
| indir, dev_size * sizeof(indir[0]))) |
| ret = -EFAULT; |
| |
| out: |
| kfree(indir); |
| return ret; |
| } |
| |
| static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, |
| void __user *useraddr) |
| { |
| struct ethtool_rxnfc rx_rings; |
| u32 user_size, dev_size, i; |
| u32 *indir; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| int ret; |
| u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); |
| |
| if (!ops->get_rxfh_indir_size || !ops->set_rxfh || |
| !ops->get_rxnfc) |
| return -EOPNOTSUPP; |
| |
| dev_size = ops->get_rxfh_indir_size(dev); |
| if (dev_size == 0) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&user_size, |
| useraddr + offsetof(struct ethtool_rxfh_indir, size), |
| sizeof(user_size))) |
| return -EFAULT; |
| |
| if (user_size != 0 && user_size != dev_size) |
| return -EINVAL; |
| |
| indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); |
| if (!indir) |
| return -ENOMEM; |
| |
| rx_rings.cmd = ETHTOOL_GRXRINGS; |
| ret = ops->get_rxnfc(dev, &rx_rings, NULL); |
| if (ret) |
| goto out; |
| |
| if (user_size == 0) { |
| for (i = 0; i < dev_size; i++) |
| indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); |
| } else { |
| ret = ethtool_copy_validate_indir(indir, |
| useraddr + ringidx_offset, |
| &rx_rings, |
| dev_size); |
| if (ret) |
| goto out; |
| } |
| |
| ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); |
| if (ret) |
| goto out; |
| |
| /* indicate whether rxfh was set to default */ |
| if (user_size == 0) |
| dev->priv_flags &= ~IFF_RXFH_CONFIGURED; |
| else |
| dev->priv_flags |= IFF_RXFH_CONFIGURED; |
| |
| out: |
| kfree(indir); |
| return ret; |
| } |
| |
| static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, |
| void __user *useraddr) |
| { |
| int ret; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| u32 user_indir_size, user_key_size; |
| u32 dev_indir_size = 0, dev_key_size = 0; |
| struct ethtool_rxfh rxfh; |
| u32 total_size; |
| u32 indir_bytes; |
| u32 *indir = NULL; |
| u8 dev_hfunc = 0; |
| u8 *hkey = NULL; |
| u8 *rss_config; |
| |
| if (!ops->get_rxfh) |
| return -EOPNOTSUPP; |
| |
| if (ops->get_rxfh_indir_size) |
| dev_indir_size = ops->get_rxfh_indir_size(dev); |
| if (ops->get_rxfh_key_size) |
| dev_key_size = ops->get_rxfh_key_size(dev); |
| |
| if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
| return -EFAULT; |
| user_indir_size = rxfh.indir_size; |
| user_key_size = rxfh.key_size; |
| |
| /* Check that reserved fields are 0 for now */ |
| if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) |
| return -EINVAL; |
| /* Most drivers don't handle rss_context, check it's 0 as well */ |
| if (rxfh.rss_context && !ops->get_rxfh_context) |
| return -EOPNOTSUPP; |
| |
| rxfh.indir_size = dev_indir_size; |
| rxfh.key_size = dev_key_size; |
| if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) |
| return -EFAULT; |
| |
| if ((user_indir_size && (user_indir_size != dev_indir_size)) || |
| (user_key_size && (user_key_size != dev_key_size))) |
| return -EINVAL; |
| |
| indir_bytes = user_indir_size * sizeof(indir[0]); |
| total_size = indir_bytes + user_key_size; |
| rss_config = kzalloc(total_size, GFP_USER); |
| if (!rss_config) |
| return -ENOMEM; |
| |
| if (user_indir_size) |
| indir = (u32 *)rss_config; |
| |
| if (user_key_size) |
| hkey = rss_config + indir_bytes; |
| |
| if (rxfh.rss_context) |
| ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey, |
| &dev_hfunc, |
| rxfh.rss_context); |
| else |
| ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); |
| if (ret) |
| goto out; |
| |
| if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), |
| &dev_hfunc, sizeof(rxfh.hfunc))) { |
| ret = -EFAULT; |
| } else if (copy_to_user(useraddr + |
| offsetof(struct ethtool_rxfh, rss_config[0]), |
| rss_config, total_size)) { |
| ret = -EFAULT; |
| } |
| out: |
| kfree(rss_config); |
| |
| return ret; |
| } |
| |
| static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, |
| void __user *useraddr) |
| { |
| int ret; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| struct ethtool_rxnfc rx_rings; |
| struct ethtool_rxfh rxfh; |
| u32 dev_indir_size = 0, dev_key_size = 0, i; |
| u32 *indir = NULL, indir_bytes = 0; |
| u8 *hkey = NULL; |
| u8 *rss_config; |
| u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); |
| bool delete = false; |
| |
| if (!ops->get_rxnfc || !ops->set_rxfh) |
| return -EOPNOTSUPP; |
| |
| if (ops->get_rxfh_indir_size) |
| dev_indir_size = ops->get_rxfh_indir_size(dev); |
| if (ops->get_rxfh_key_size) |
| dev_key_size = ops->get_rxfh_key_size(dev); |
| |
| if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
| return -EFAULT; |
| |
| /* Check that reserved fields are 0 for now */ |
| if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) |
| return -EINVAL; |
| /* Most drivers don't handle rss_context, check it's 0 as well */ |
| if (rxfh.rss_context && !ops->set_rxfh_context) |
| return -EOPNOTSUPP; |
| |
| /* If either indir, hash key or function is valid, proceed further. |
| * Must request at least one change: indir size, hash key or function. |
| */ |
| if ((rxfh.indir_size && |
| rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && |
| rxfh.indir_size != dev_indir_size) || |
| (rxfh.key_size && (rxfh.key_size != dev_key_size)) || |
| (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && |
| rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) |
| return -EINVAL; |
| |
| if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) |
| indir_bytes = dev_indir_size * sizeof(indir[0]); |
| |
| rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); |
| if (!rss_config) |
| return -ENOMEM; |
| |
| rx_rings.cmd = ETHTOOL_GRXRINGS; |
| ret = ops->get_rxnfc(dev, &rx_rings, NULL); |
| if (ret) |
| goto out; |
| |
| /* rxfh.indir_size == 0 means reset the indir table to default (master |
| * context) or delete the context (other RSS contexts). |
| * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. |
| */ |
| if (rxfh.indir_size && |
| rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { |
| indir = (u32 *)rss_config; |
| ret = ethtool_copy_validate_indir(indir, |
| useraddr + rss_cfg_offset, |
| &rx_rings, |
| rxfh.indir_size); |
| if (ret) |
| goto out; |
| } else if (rxfh.indir_size == 0) { |
| if (rxfh.rss_context == 0) { |
| indir = (u32 *)rss_config; |
| for (i = 0; i < dev_indir_size; i++) |
| indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); |
| } else { |
| delete = true; |
| } |
| } |
| |
| if (rxfh.key_size) { |
| hkey = rss_config + indir_bytes; |
| if (copy_from_user(hkey, |
| useraddr + rss_cfg_offset + indir_bytes, |
| rxfh.key_size)) { |
| ret = -EFAULT; |
| goto out; |
| } |
| } |
| |
| if (rxfh.rss_context) |
| ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc, |
| &rxfh.rss_context, delete); |
| else |
| ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); |
| if (ret) |
| goto out; |
| |
| if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), |
| &rxfh.rss_context, sizeof(rxfh.rss_context))) |
| ret = -EFAULT; |
| |
| if (!rxfh.rss_context) { |
| /* indicate whether rxfh was set to default */ |
| if (rxfh.indir_size == 0) |
| dev->priv_flags &= ~IFF_RXFH_CONFIGURED; |
| else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) |
| dev->priv_flags |= IFF_RXFH_CONFIGURED; |
| } |
| |
| out: |
| kfree(rss_config); |
| return ret; |
| } |
| |
| static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_regs regs; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| void *regbuf; |
| int reglen, ret; |
| |
| if (!ops->get_regs || !ops->get_regs_len) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(®s, useraddr, sizeof(regs))) |
| return -EFAULT; |
| |
| reglen = ops->get_regs_len(dev); |
| if (reglen <= 0) |
| return reglen; |
| |
| if (regs.len > reglen) |
| regs.len = reglen; |
| |
| regbuf = vzalloc(reglen); |
| if (!regbuf) |
| return -ENOMEM; |
| |
| ops->get_regs(dev, ®s, regbuf); |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, ®s, sizeof(regs))) |
| goto out; |
| useraddr += offsetof(struct ethtool_regs, data); |
| if (regbuf && copy_to_user(useraddr, regbuf, regs.len)) |
| goto out; |
| ret = 0; |
| |
| out: |
| vfree(regbuf); |
| return ret; |
| } |
| |
| static int ethtool_reset(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_value reset; |
| int ret; |
| |
| if (!dev->ethtool_ops->reset) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&reset, useraddr, sizeof(reset))) |
| return -EFAULT; |
| |
| ret = dev->ethtool_ops->reset(dev, &reset.data); |
| if (ret) |
| return ret; |
| |
| if (copy_to_user(useraddr, &reset, sizeof(reset))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; |
| |
| if (!dev->ethtool_ops->get_wol) |
| return -EOPNOTSUPP; |
| |
| dev->ethtool_ops->get_wol(dev, &wol); |
| |
| if (copy_to_user(useraddr, &wol, sizeof(wol))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_wolinfo wol; |
| int ret; |
| |
| if (!dev->ethtool_ops->set_wol) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&wol, useraddr, sizeof(wol))) |
| return -EFAULT; |
| |
| ret = dev->ethtool_ops->set_wol(dev, &wol); |
| if (ret) |
| return ret; |
| |
| dev->wol_enabled = !!wol.wolopts; |
| |
| return 0; |
| } |
| |
| static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_eee edata; |
| int rc; |
| |
| if (!dev->ethtool_ops->get_eee) |
| return -EOPNOTSUPP; |
| |
| memset(&edata, 0, sizeof(struct ethtool_eee)); |
| edata.cmd = ETHTOOL_GEEE; |
| rc = dev->ethtool_ops->get_eee(dev, &edata); |
| |
| if (rc) |
| return rc; |
| |
| if (copy_to_user(useraddr, &edata, sizeof(edata))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_eee edata; |
| |
| if (!dev->ethtool_ops->set_eee) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| |
| return dev->ethtool_ops->set_eee(dev, &edata); |
| } |
| |
| static int ethtool_nway_reset(struct net_device *dev) |
| { |
| if (!dev->ethtool_ops->nway_reset) |
| return -EOPNOTSUPP; |
| |
| return dev->ethtool_ops->nway_reset(dev); |
| } |
| |
| static int ethtool_get_link(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; |
| |
| if (!dev->ethtool_ops->get_link) |
| return -EOPNOTSUPP; |
| |
| edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev); |
| |
| if (copy_to_user(useraddr, &edata, sizeof(edata))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, |
| int (*getter)(struct net_device *, |
| struct ethtool_eeprom *, u8 *), |
| u32 total_len) |
| { |
| struct ethtool_eeprom eeprom; |
| void __user *userbuf = useraddr + sizeof(eeprom); |
| u32 bytes_remaining; |
| u8 *data; |
| int ret = 0; |
| |
| if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) |
| return -EFAULT; |
| |
| /* Check for wrap and zero */ |
| if (eeprom.offset + eeprom.len <= eeprom.offset) |
| return -EINVAL; |
| |
| /* Check for exceeding total eeprom len */ |
| if (eeprom.offset + eeprom.len > total_len) |
| return -EINVAL; |
| |
| data = kmalloc(PAGE_SIZE, GFP_USER); |
| if (!data) |
| return -ENOMEM; |
| |
| bytes_remaining = eeprom.len; |
| while (bytes_remaining > 0) { |
| eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); |
| |
| ret = getter(dev, &eeprom, data); |
| if (ret) |
| break; |
| if (copy_to_user(userbuf, data, eeprom.len)) { |
| ret = -EFAULT; |
| break; |
| } |
| userbuf += eeprom.len; |
| eeprom.offset += eeprom.len; |
| bytes_remaining -= eeprom.len; |
| } |
| |
| eeprom.len = userbuf - (useraddr + sizeof(eeprom)); |
| eeprom.offset -= eeprom.len; |
| if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) |
| ret = -EFAULT; |
| |
| kfree(data); |
| return ret; |
| } |
| |
| static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) |
| { |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| |
| if (!ops->get_eeprom || !ops->get_eeprom_len || |
| !ops->get_eeprom_len(dev)) |
| return -EOPNOTSUPP; |
| |
| return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, |
| ops->get_eeprom_len(dev)); |
| } |
| |
| static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_eeprom eeprom; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| void __user *userbuf = useraddr + sizeof(eeprom); |
| u32 bytes_remaining; |
| u8 *data; |
| int ret = 0; |
| |
| if (!ops->set_eeprom || !ops->get_eeprom_len || |
| !ops->get_eeprom_len(dev)) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) |
| return -EFAULT; |
| |
| /* Check for wrap and zero */ |
| if (eeprom.offset + eeprom.len <= eeprom.offset) |
| return -EINVAL; |
| |
| /* Check for exceeding total eeprom len */ |
| if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) |
| return -EINVAL; |
| |
| data = kmalloc(PAGE_SIZE, GFP_USER); |
| if (!data) |
| return -ENOMEM; |
| |
| bytes_remaining = eeprom.len; |
| while (bytes_remaining > 0) { |
| eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); |
| |
| if (copy_from_user(data, userbuf, eeprom.len)) { |
| ret = -EFAULT; |
| break; |
| } |
| ret = ops->set_eeprom(dev, &eeprom, data); |
| if (ret) |
| break; |
| userbuf += eeprom.len; |
| eeprom.offset += eeprom.len; |
| bytes_remaining -= eeprom.len; |
| } |
| |
| kfree(data); |
| return ret; |
| } |
| |
| static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, |
| void __user *useraddr) |
| { |
| struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; |
| |
| if (!dev->ethtool_ops->get_coalesce) |
| return -EOPNOTSUPP; |
| |
| dev->ethtool_ops->get_coalesce(dev, &coalesce); |
| |
| if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, |
| void __user *useraddr) |
| { |
| struct ethtool_coalesce coalesce; |
| |
| if (!dev->ethtool_ops->set_coalesce) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) |
| return -EFAULT; |
| |
| return dev->ethtool_ops->set_coalesce(dev, &coalesce); |
| } |
| |
| static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; |
| |
| if (!dev->ethtool_ops->get_ringparam) |
| return -EOPNOTSUPP; |
| |
| dev->ethtool_ops->get_ringparam(dev, &ringparam); |
| |
| if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; |
| |
| if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) |
| return -EFAULT; |
| |
| dev->ethtool_ops->get_ringparam(dev, &max); |
| |
| /* ensure new ring parameters are within the maximums */ |
| if (ringparam.rx_pending > max.rx_max_pending || |
| ringparam.rx_mini_pending > max.rx_mini_max_pending || |
| ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || |
| ringparam.tx_pending > max.tx_max_pending) |
| return -EINVAL; |
| |
| return dev->ethtool_ops->set_ringparam(dev, &ringparam); |
| } |
| |
| static noinline_for_stack int ethtool_get_channels(struct net_device *dev, |
| void __user *useraddr) |
| { |
| struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; |
| |
| if (!dev->ethtool_ops->get_channels) |
| return -EOPNOTSUPP; |
| |
| dev->ethtool_ops->get_channels(dev, &channels); |
| |
| if (copy_to_user(useraddr, &channels, sizeof(channels))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static noinline_for_stack int ethtool_set_channels(struct net_device *dev, |
| void __user *useraddr) |
| { |
| struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; |
| u16 from_channel, to_channel; |
| u32 max_rx_in_use = 0; |
| unsigned int i; |
| |
| if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&channels, useraddr, sizeof(channels))) |
| return -EFAULT; |
| |
| dev->ethtool_ops->get_channels(dev, &curr); |
| |
| /* ensure new counts are within the maximums */ |
| if (channels.rx_count > curr.max_rx || |
| channels.tx_count > curr.max_tx || |
| channels.combined_count > curr.max_combined || |
| channels.other_count > curr.max_other) |
| return -EINVAL; |
| |
| /* ensure the new Rx count fits within the configured Rx flow |
| * indirection table settings */ |
| if (netif_is_rxfh_configured(dev) && |
| !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) && |
| (channels.combined_count + channels.rx_count) <= max_rx_in_use) |
| return -EINVAL; |
| |
| /* Disabling channels, query zero-copy AF_XDP sockets */ |
| from_channel = channels.combined_count + |
| min(channels.rx_count, channels.tx_count); |
| to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); |
| for (i = from_channel; i < to_channel; i++) |
| if (xdp_get_umem_from_qid(dev, i)) |
| return -EINVAL; |
| |
| return dev->ethtool_ops->set_channels(dev, &channels); |
| } |
| |
| static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; |
| |
| if (!dev->ethtool_ops->get_pauseparam) |
| return -EOPNOTSUPP; |
| |
| dev->ethtool_ops->get_pauseparam(dev, &pauseparam); |
| |
| if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_pauseparam pauseparam; |
| |
| if (!dev->ethtool_ops->set_pauseparam) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) |
| return -EFAULT; |
| |
| return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); |
| } |
| |
| static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_test test; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| u64 *data; |
| int ret, test_len; |
| |
| if (!ops->self_test || !ops->get_sset_count) |
| return -EOPNOTSUPP; |
| |
| test_len = ops->get_sset_count(dev, ETH_SS_TEST); |
| if (test_len < 0) |
| return test_len; |
| WARN_ON(test_len == 0); |
| |
| if (copy_from_user(&test, useraddr, sizeof(test))) |
| return -EFAULT; |
| |
| test.len = test_len; |
| data = kmalloc_array(test_len, sizeof(u64), GFP_USER); |
| if (!data) |
| return -ENOMEM; |
| |
| ops->self_test(dev, &test, data); |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, &test, sizeof(test))) |
| goto out; |
| useraddr += sizeof(test); |
| if (copy_to_user(useraddr, data, test.len * sizeof(u64))) |
| goto out; |
| ret = 0; |
| |
| out: |
| kfree(data); |
| return ret; |
| } |
| |
| static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_gstrings gstrings; |
| u8 *data; |
| int ret; |
| |
| if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) |
| return -EFAULT; |
| |
| ret = __ethtool_get_sset_count(dev, gstrings.string_set); |
| if (ret < 0) |
| return ret; |
| if (ret > S32_MAX / ETH_GSTRING_LEN) |
| return -ENOMEM; |
| WARN_ON_ONCE(!ret); |
| |
| gstrings.len = ret; |
| |
| if (gstrings.len) { |
| data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); |
| if (!data) |
| return -ENOMEM; |
| |
| __ethtool_get_strings(dev, gstrings.string_set, data); |
| } else { |
| data = NULL; |
| } |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) |
| goto out; |
| useraddr += sizeof(gstrings); |
| if (gstrings.len && |
| copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) |
| goto out; |
| ret = 0; |
| |
| out: |
| vfree(data); |
| return ret; |
| } |
| |
| static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_value id; |
| static bool busy; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| int rc; |
| |
| if (!ops->set_phys_id) |
| return -EOPNOTSUPP; |
| |
| if (busy) |
| return -EBUSY; |
| |
| if (copy_from_user(&id, useraddr, sizeof(id))) |
| return -EFAULT; |
| |
| rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); |
| if (rc < 0) |
| return rc; |
| |
| /* Drop the RTNL lock while waiting, but prevent reentry or |
| * removal of the device. |
| */ |
| busy = true; |
| dev_hold(dev); |
| rtnl_unlock(); |
| |
| if (rc == 0) { |
| /* Driver will handle this itself */ |
| schedule_timeout_interruptible( |
| id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); |
| } else { |
| /* Driver expects to be called at twice the frequency in rc */ |
| int n = rc * 2, i, interval = HZ / n; |
| |
| /* Count down seconds */ |
| do { |
| /* Count down iterations per second */ |
| i = n; |
| do { |
| rtnl_lock(); |
| rc = ops->set_phys_id(dev, |
| (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); |
| rtnl_unlock(); |
| if (rc) |
| break; |
| schedule_timeout_interruptible(interval); |
| } while (!signal_pending(current) && --i != 0); |
| } while (!signal_pending(current) && |
| (id.data == 0 || --id.data != 0)); |
| } |
| |
| rtnl_lock(); |
| dev_put(dev); |
| busy = false; |
| |
| (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); |
| return rc; |
| } |
| |
| static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_stats stats; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| u64 *data; |
| int ret, n_stats; |
| |
| if (!ops->get_ethtool_stats || !ops->get_sset_count) |
| return -EOPNOTSUPP; |
| |
| n_stats = ops->get_sset_count(dev, ETH_SS_STATS); |
| if (n_stats < 0) |
| return n_stats; |
| if (n_stats > S32_MAX / sizeof(u64)) |
| return -ENOMEM; |
| WARN_ON_ONCE(!n_stats); |
| if (copy_from_user(&stats, useraddr, sizeof(stats))) |
| return -EFAULT; |
| |
| stats.n_stats = n_stats; |
| |
| if (n_stats) { |
| data = vzalloc(array_size(n_stats, sizeof(u64))); |
| if (!data) |
| return -ENOMEM; |
| ops->get_ethtool_stats(dev, &stats, data); |
| } else { |
| data = NULL; |
| } |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, &stats, sizeof(stats))) |
| goto out; |
| useraddr += sizeof(stats); |
| if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64))) |
| goto out; |
| ret = 0; |
| |
| out: |
| vfree(data); |
| return ret; |
| } |
| |
| static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) |
| { |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| struct phy_device *phydev = dev->phydev; |
| struct ethtool_stats stats; |
| u64 *data; |
| int ret, n_stats; |
| |
| if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count)) |
| return -EOPNOTSUPP; |
| |
| if (dev->phydev && !ops->get_ethtool_phy_stats) |
| n_stats = phy_ethtool_get_sset_count(dev->phydev); |
| else |
| n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); |
| if (n_stats < 0) |
| return n_stats; |
| if (n_stats > S32_MAX / sizeof(u64)) |
| return -ENOMEM; |
| WARN_ON_ONCE(!n_stats); |
| |
| if (copy_from_user(&stats, useraddr, sizeof(stats))) |
| return -EFAULT; |
| |
| stats.n_stats = n_stats; |
| |
| if (n_stats) { |
| data = vzalloc(array_size(n_stats, sizeof(u64))); |
| if (!data) |
| return -ENOMEM; |
| |
| if (dev->phydev && !ops->get_ethtool_phy_stats) { |
| ret = phy_ethtool_get_stats(dev->phydev, &stats, data); |
| if (ret < 0) |
| goto out; |
| } else { |
| ops->get_ethtool_phy_stats(dev, &stats, data); |
| } |
| } else { |
| data = NULL; |
| } |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, &stats, sizeof(stats))) |
| goto out; |
| useraddr += sizeof(stats); |
| if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64))) |
| goto out; |
| ret = 0; |
| |
| out: |
| vfree(data); |
| return ret; |
| } |
| |
| static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_perm_addr epaddr; |
| |
| if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
| return -EFAULT; |
| |
| if (epaddr.size < dev->addr_len) |
| return -ETOOSMALL; |
| epaddr.size = dev->addr_len; |
| |
| if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
| return -EFAULT; |
| useraddr += sizeof(epaddr); |
| if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
| u32 cmd, u32 (*actor)(struct net_device *)) |
| { |
| struct ethtool_value edata = { .cmd = cmd }; |
| |
| if (!actor) |
| return -EOPNOTSUPP; |
| |
| edata.data = actor(dev); |
| |
| if (copy_to_user(useraddr, &edata, sizeof(edata))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
| void (*actor)(struct net_device *, u32)) |
| { |
| struct ethtool_value edata; |
| |
| if (!actor) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| |
| actor(dev, edata.data); |
| return 0; |
| } |
| |
| static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
| int (*actor)(struct net_device *, u32)) |
| { |
| struct ethtool_value edata; |
| |
| if (!actor) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&edata, useraddr, sizeof(edata))) |
| return -EFAULT; |
| |
| return actor(dev, edata.data); |
| } |
| |
| static noinline_for_stack int ethtool_flash_device(struct net_device *dev, |
| char __user *useraddr) |
| { |
| struct ethtool_flash efl; |
| |
| if (copy_from_user(&efl, useraddr, sizeof(efl))) |
| return -EFAULT; |
| efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; |
| |
| if (!dev->ethtool_ops->flash_device) |
| return devlink_compat_flash_update(dev, efl.data); |
| |
| return dev->ethtool_ops->flash_device(dev, &efl); |
| } |
| |
| static int ethtool_set_dump(struct net_device *dev, |
| void __user *useraddr) |
| { |
| struct ethtool_dump dump; |
| |
| if (!dev->ethtool_ops->set_dump) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&dump, useraddr, sizeof(dump))) |
| return -EFAULT; |
| |
| return dev->ethtool_ops->set_dump(dev, &dump); |
| } |
| |
| static int ethtool_get_dump_flag(struct net_device *dev, |
| void __user *useraddr) |
| { |
| int ret; |
| struct ethtool_dump dump; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| |
| if (!ops->get_dump_flag) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&dump, useraddr, sizeof(dump))) |
| return -EFAULT; |
| |
| ret = ops->get_dump_flag(dev, &dump); |
| if (ret) |
| return ret; |
| |
| if (copy_to_user(useraddr, &dump, sizeof(dump))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_get_dump_data(struct net_device *dev, |
| void __user *useraddr) |
| { |
| int ret; |
| __u32 len; |
| struct ethtool_dump dump, tmp; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| void *data = NULL; |
| |
| if (!ops->get_dump_data || !ops->get_dump_flag) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&dump, useraddr, sizeof(dump))) |
| return -EFAULT; |
| |
| memset(&tmp, 0, sizeof(tmp)); |
| tmp.cmd = ETHTOOL_GET_DUMP_FLAG; |
| ret = ops->get_dump_flag(dev, &tmp); |
| if (ret) |
| return ret; |
| |
| len = min(tmp.len, dump.len); |
| if (!len) |
| return -EFAULT; |
| |
| /* Don't ever let the driver think there's more space available |
| * than it requested with .get_dump_flag(). |
| */ |
| dump.len = len; |
| |
| /* Always allocate enough space to hold the whole thing so that the |
| * driver does not need to check the length and bother with partial |
| * dumping. |
| */ |
| data = vzalloc(tmp.len); |
| if (!data) |
| return -ENOMEM; |
| ret = ops->get_dump_data(dev, &dump, data); |
| if (ret) |
| goto out; |
| |
| /* There are two sane possibilities: |
| * 1. The driver's .get_dump_data() does not touch dump.len. |
| * 2. Or it may set dump.len to how much it really writes, which |
| * should be tmp.len (or len if it can do a partial dump). |
| * In any case respond to userspace with the actual length of data |
| * it's receiving. |
| */ |
| WARN_ON(dump.len != len && dump.len != tmp.len); |
| dump.len = len; |
| |
| if (copy_to_user(useraddr, &dump, sizeof(dump))) { |
| ret = -EFAULT; |
| goto out; |
| } |
| useraddr += offsetof(struct ethtool_dump, data); |
| if (copy_to_user(useraddr, data, len)) |
| ret = -EFAULT; |
| out: |
| vfree(data); |
| return ret; |
| } |
| |
| static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) |
| { |
| int err = 0; |
| struct ethtool_ts_info info; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| struct phy_device *phydev = dev->phydev; |
| |
| memset(&info, 0, sizeof(info)); |
| info.cmd = ETHTOOL_GET_TS_INFO; |
| |
| if (phydev && phydev->drv && phydev->drv->ts_info) { |
| err = phydev->drv->ts_info(phydev, &info); |
| } else if (ops->get_ts_info) { |
| err = ops->get_ts_info(dev, &info); |
| } else { |
| info.so_timestamping = |
| SOF_TIMESTAMPING_RX_SOFTWARE | |
| SOF_TIMESTAMPING_SOFTWARE; |
| info.phc_index = -1; |
| } |
| |
| if (err) |
| return err; |
| |
| if (copy_to_user(useraddr, &info, sizeof(info))) |
| err = -EFAULT; |
| |
| return err; |
| } |
| |
| static int __ethtool_get_module_info(struct net_device *dev, |
| struct ethtool_modinfo *modinfo) |
| { |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| struct phy_device *phydev = dev->phydev; |
| |
| if (dev->sfp_bus) |
| return sfp_get_module_info(dev->sfp_bus, modinfo); |
| |
| if (phydev && phydev->drv && phydev->drv->module_info) |
| return phydev->drv->module_info(phydev, modinfo); |
| |
| if (ops->get_module_info) |
| return ops->get_module_info(dev, modinfo); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int ethtool_get_module_info(struct net_device *dev, |
| void __user *useraddr) |
| { |
| int ret; |
| struct ethtool_modinfo modinfo; |
| |
| if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) |
| return -EFAULT; |
| |
| ret = __ethtool_get_module_info(dev, &modinfo); |
| if (ret) |
| return ret; |
| |
| if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| static int __ethtool_get_module_eeprom(struct net_device *dev, |
| struct ethtool_eeprom *ee, u8 *data) |
| { |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| struct phy_device *phydev = dev->phydev; |
| |
| if (dev->sfp_bus) |
| return sfp_get_module_eeprom(dev->sfp_bus, ee, data); |
| |
| if (phydev && phydev->drv && phydev->drv->module_eeprom) |
| return phydev->drv->module_eeprom(phydev, ee, data); |
| |
| if (ops->get_module_eeprom) |
| return ops->get_module_eeprom(dev, ee, data); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int ethtool_get_module_eeprom(struct net_device *dev, |
| void __user *useraddr) |
| { |
| int ret; |
| struct ethtool_modinfo modinfo; |
| |
| ret = __ethtool_get_module_info(dev, &modinfo); |
| if (ret) |
| return ret; |
| |
| return ethtool_get_any_eeprom(dev, useraddr, |
| __ethtool_get_module_eeprom, |
| modinfo.eeprom_len); |
| } |
| |
| static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) |
| { |
| switch (tuna->id) { |
| case ETHTOOL_RX_COPYBREAK: |
| case ETHTOOL_TX_COPYBREAK: |
| if (tuna->len != sizeof(u32) || |
| tuna->type_id != ETHTOOL_TUNABLE_U32) |
| return -EINVAL; |
| break; |
| case ETHTOOL_PFC_PREVENTION_TOUT: |
| if (tuna->len != sizeof(u16) || |
| tuna->type_id != ETHTOOL_TUNABLE_U16) |
| return -EINVAL; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) |
| { |
| int ret; |
| struct ethtool_tunable tuna; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| void *data; |
| |
| if (!ops->get_tunable) |
| return -EOPNOTSUPP; |
| if (copy_from_user(&tuna, useraddr, sizeof(tuna))) |
| return -EFAULT; |
| ret = ethtool_tunable_valid(&tuna); |
| if (ret) |
| return ret; |
| data = kmalloc(tuna.len, GFP_USER); |
| if (!data) |
| return -ENOMEM; |
| ret = ops->get_tunable(dev, &tuna, data); |
| if (ret) |
| goto out; |
| useraddr += sizeof(tuna); |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, data, tuna.len)) |
| goto out; |
| ret = 0; |
| |
| out: |
| kfree(data); |
| return ret; |
| } |
| |
| static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) |
| { |
| int ret; |
| struct ethtool_tunable tuna; |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| void *data; |
| |
| if (!ops->set_tunable) |
| return -EOPNOTSUPP; |
| if (copy_from_user(&tuna, useraddr, sizeof(tuna))) |
| return -EFAULT; |
| ret = ethtool_tunable_valid(&tuna); |
| if (ret) |
| return ret; |
| useraddr += sizeof(tuna); |
| data = memdup_user(useraddr, tuna.len); |
| if (IS_ERR(data)) |
| return PTR_ERR(data); |
| ret = ops->set_tunable(dev, &tuna, data); |
| |
| kfree(data); |
| return ret; |
| } |
| |
| static noinline_for_stack int |
| ethtool_get_per_queue_coalesce(struct net_device *dev, |
| void __user *useraddr, |
| struct ethtool_per_queue_op *per_queue_opt) |
| { |
| u32 bit; |
| int ret; |
| DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); |
| |
| if (!dev->ethtool_ops->get_per_queue_coalesce) |
| return -EOPNOTSUPP; |
| |
| useraddr += sizeof(*per_queue_opt); |
| |
| bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, |
| MAX_NUM_QUEUE); |
| |
| for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { |
| struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; |
| |
| ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); |
| if (ret != 0) |
| return ret; |
| if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) |
| return -EFAULT; |
| useraddr += sizeof(coalesce); |
| } |
| |
| return 0; |
| } |
| |
| static noinline_for_stack int |
| ethtool_set_per_queue_coalesce(struct net_device *dev, |
| void __user *useraddr, |
| struct ethtool_per_queue_op *per_queue_opt) |
| { |
| u32 bit; |
| int i, ret = 0; |
| int n_queue; |
| struct ethtool_coalesce *backup = NULL, *tmp = NULL; |
| DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); |
| |
| if ((!dev->ethtool_ops->set_per_queue_coalesce) || |
| (!dev->ethtool_ops->get_per_queue_coalesce)) |
| return -EOPNOTSUPP; |
| |
| useraddr += sizeof(*per_queue_opt); |
| |
| bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); |
| n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); |
| tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); |
| if (!backup) |
| return -ENOMEM; |
| |
| for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { |
| struct ethtool_coalesce coalesce; |
| |
| ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); |
| if (ret != 0) |
| goto roll_back; |
| |
| tmp++; |
| |
| if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { |
| ret = -EFAULT; |
| goto roll_back; |
| } |
| |
| ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); |
| if (ret != 0) |
| goto roll_back; |
| |
| useraddr += sizeof(coalesce); |
| } |
| |
| roll_back: |
| if (ret != 0) { |
| tmp = backup; |
| for_each_set_bit(i, queue_mask, bit) { |
| dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); |
| tmp++; |
| } |
| } |
| kfree(backup); |
| |
| return ret; |
| } |
| |
| static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, |
| void __user *useraddr, u32 sub_cmd) |
| { |
| struct ethtool_per_queue_op per_queue_opt; |
| |
| if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) |
| return -EFAULT; |
| |
| if (per_queue_opt.sub_command != sub_cmd) |
| return -EINVAL; |
| |
| switch (per_queue_opt.sub_command) { |
| case ETHTOOL_GCOALESCE: |
| return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); |
| case ETHTOOL_SCOALESCE: |
| return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); |
| default: |
| return -EOPNOTSUPP; |
| }; |
| } |
| |
| static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) |
| { |
| switch (tuna->id) { |
| case ETHTOOL_PHY_DOWNSHIFT: |
| if (tuna->len != sizeof(u8) || |
| tuna->type_id != ETHTOOL_TUNABLE_U8) |
| return -EINVAL; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int get_phy_tunable(struct net_device *dev, void __user *useraddr) |
| { |
| int ret; |
| struct ethtool_tunable tuna; |
| struct phy_device *phydev = dev->phydev; |
| void *data; |
| |
| if (!(phydev && phydev->drv && phydev->drv->get_tunable)) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&tuna, useraddr, sizeof(tuna))) |
| return -EFAULT; |
| ret = ethtool_phy_tunable_valid(&tuna); |
| if (ret) |
| return ret; |
| data = kmalloc(tuna.len, GFP_USER); |
| if (!data) |
| return -ENOMEM; |
| mutex_lock(&phydev->lock); |
| ret = phydev->drv->get_tunable(phydev, &tuna, data); |
| mutex_unlock(&phydev->lock); |
| if (ret) |
| goto out; |
| useraddr += sizeof(tuna); |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, data, tuna.len)) |
| goto out; |
| ret = 0; |
| |
| out: |
| kfree(data); |
| return ret; |
| } |
| |
| static int set_phy_tunable(struct net_device *dev, void __user *useraddr) |
| { |
| int ret; |
| struct ethtool_tunable tuna; |
| struct phy_device *phydev = dev->phydev; |
| void *data; |
| |
| if (!(phydev && phydev->drv && phydev->drv->set_tunable)) |
| return -EOPNOTSUPP; |
| if (copy_from_user(&tuna, useraddr, sizeof(tuna))) |
| return -EFAULT; |
| ret = ethtool_phy_tunable_valid(&tuna); |
| if (ret) |
| return ret; |
| useraddr += sizeof(tuna); |
| data = memdup_user(useraddr, tuna.len); |
| if (IS_ERR(data)) |
| return PTR_ERR(data); |
| mutex_lock(&phydev->lock); |
| ret = phydev->drv->set_tunable(phydev, &tuna, data); |
| mutex_unlock(&phydev->lock); |
| |
| kfree(data); |
| return ret; |
| } |
| |
| static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; |
| int rc; |
| |
| if (!dev->ethtool_ops->get_fecparam) |
| return -EOPNOTSUPP; |
| |
| rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); |
| if (rc) |
| return rc; |
| |
| if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_fecparam fecparam; |
| |
| if (!dev->ethtool_ops->set_fecparam) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) |
| return -EFAULT; |
| |
| return dev->ethtool_ops->set_fecparam(dev, &fecparam); |
| } |
| |
| /* The main entry point in this file. Called from net/core/dev_ioctl.c */ |
| |
| int dev_ethtool(struct net *net, struct ifreq *ifr) |
| { |
| struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); |
| void __user *useraddr = ifr->ifr_data; |
| u32 ethcmd, sub_cmd; |
| int rc; |
| netdev_features_t old_features; |
| |
| if (!dev || !netif_device_present(dev)) |
| return -ENODEV; |
| |
| if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) |
| return -EFAULT; |
| |
| if (ethcmd == ETHTOOL_PERQUEUE) { |
| if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) |
| return -EFAULT; |
| } else { |
| sub_cmd = ethcmd; |
| } |
| /* Allow some commands to be done by anyone */ |
| switch (sub_cmd) { |
| case ETHTOOL_GSET: |
| case ETHTOOL_GDRVINFO: |
| case ETHTOOL_GMSGLVL: |
| case ETHTOOL_GLINK: |
| case ETHTOOL_GCOALESCE: |
| case ETHTOOL_GRINGPARAM: |
| case ETHTOOL_GPAUSEPARAM: |
| case ETHTOOL_GRXCSUM: |
| case ETHTOOL_GTXCSUM: |
| case ETHTOOL_GSG: |
| case ETHTOOL_GSSET_INFO: |
| case ETHTOOL_GSTRINGS: |
| case ETHTOOL_GSTATS: |
| case ETHTOOL_GPHYSTATS: |
| case ETHTOOL_GTSO: |
| case ETHTOOL_GPERMADDR: |
| case ETHTOOL_GUFO: |
| case ETHTOOL_GGSO: |
| case ETHTOOL_GGRO: |
| case ETHTOOL_GFLAGS: |
| case ETHTOOL_GPFLAGS: |
| case ETHTOOL_GRXFH: |
| case ETHTOOL_GRXRINGS: |
| case ETHTOOL_GRXCLSRLCNT: |
| case ETHTOOL_GRXCLSRULE: |
| case ETHTOOL_GRXCLSRLALL: |
| case ETHTOOL_GRXFHINDIR: |
| case ETHTOOL_GRSSH: |
| case ETHTOOL_GFEATURES: |
| case ETHTOOL_GCHANNELS: |
| case ETHTOOL_GET_TS_INFO: |
| case ETHTOOL_GEEE: |
| case ETHTOOL_GTUNABLE: |
| case ETHTOOL_PHY_GTUNABLE: |
| case ETHTOOL_GLINKSETTINGS: |
| case ETHTOOL_GFECPARAM: |
| break; |
| default: |
| if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
| return -EPERM; |
| } |
| |
| if (dev->ethtool_ops->begin) { |
| rc = dev->ethtool_ops->begin(dev); |
| if (rc < 0) |
| return rc; |
| } |
| old_features = dev->features; |
| |
| switch (ethcmd) { |
| case ETHTOOL_GSET: |
| rc = ethtool_get_settings(dev, useraddr); |
| break; |
| case ETHTOOL_SSET: |
| rc = ethtool_set_settings(dev, useraddr); |
| break; |
| case ETHTOOL_GDRVINFO: |
| rc = ethtool_get_drvinfo(dev, useraddr); |
| break; |
| case ETHTOOL_GREGS: |
| rc = ethtool_get_regs(dev, useraddr); |
| break; |
| case ETHTOOL_GWOL: |
| rc = ethtool_get_wol(dev, useraddr); |
| break; |
| case ETHTOOL_SWOL: |
| rc = ethtool_set_wol(dev, useraddr); |
| break; |
| case ETHTOOL_GMSGLVL: |
| rc = ethtool_get_value(dev, useraddr, ethcmd, |
| dev->ethtool_ops->get_msglevel); |
| break; |
| case ETHTOOL_SMSGLVL: |
| rc = ethtool_set_value_void(dev, useraddr, |
| dev->ethtool_ops->set_msglevel); |
| break; |
| case ETHTOOL_GEEE: |
| rc = ethtool_get_eee(dev, useraddr); |
| break; |
| case ETHTOOL_SEEE: |
| rc = ethtool_set_eee(dev, useraddr); |
| break; |
| case ETHTOOL_NWAY_RST: |
| rc = ethtool_nway_reset(dev); |
| break; |
| case ETHTOOL_GLINK: |
| rc = ethtool_get_link(dev, useraddr); |
| break; |
| case ETHTOOL_GEEPROM: |
| rc = ethtool_get_eeprom(dev, useraddr); |
| break; |
| case ETHTOOL_SEEPROM: |
| rc = ethtool_set_eeprom(dev, useraddr); |
| break; |
| case ETHTOOL_GCOALESCE: |
| rc = ethtool_get_coalesce(dev, useraddr); |
| break; |
| case ETHTOOL_SCOALESCE: |
| rc = ethtool_set_coalesce(dev, useraddr); |
| break; |
| case ETHTOOL_GRINGPARAM: |
| rc = ethtool_get_ringparam(dev, useraddr); |
| break; |
| case ETHTOOL_SRINGPARAM: |
| rc = ethtool_set_ringparam(dev, useraddr); |
| break; |
| case ETHTOOL_GPAUSEPARAM: |
| rc = ethtool_get_pauseparam(dev, useraddr); |
| break; |
| case ETHTOOL_SPAUSEPARAM: |
| rc = ethtool_set_pauseparam(dev, useraddr); |
| break; |
| case ETHTOOL_TEST: |
| rc = ethtool_self_test(dev, useraddr); |
| break; |
| case ETHTOOL_GSTRINGS: |
| rc = ethtool_get_strings(dev, useraddr); |
| break; |
| case ETHTOOL_PHYS_ID: |
| rc = ethtool_phys_id(dev, useraddr); |
| break; |
| case ETHTOOL_GSTATS: |
| rc = ethtool_get_stats(dev, useraddr); |
| break; |
| case ETHTOOL_GPERMADDR: |
| rc = ethtool_get_perm_addr(dev, useraddr); |
| break; |
| case ETHTOOL_GFLAGS: |
| rc = ethtool_get_value(dev, useraddr, ethcmd, |
| __ethtool_get_flags); |
| break; |
| case ETHTOOL_SFLAGS: |
| rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); |
| break; |
| case ETHTOOL_GPFLAGS: |
| rc = ethtool_get_value(dev, useraddr, ethcmd, |
| dev->ethtool_ops->get_priv_flags); |
| break; |
| case ETHTOOL_SPFLAGS: |
| rc = ethtool_set_value(dev, useraddr, |
| dev->ethtool_ops->set_priv_flags); |
| break; |
| case ETHTOOL_GRXFH: |
| case ETHTOOL_GRXRINGS: |
| case ETHTOOL_GRXCLSRLCNT: |
| case ETHTOOL_GRXCLSRULE: |
| case ETHTOOL_GRXCLSRLALL: |
| rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); |
| break; |
| case ETHTOOL_SRXFH: |
| case ETHTOOL_SRXCLSRLDEL: |
| case ETHTOOL_SRXCLSRLINS: |
| rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); |
| break; |
| case ETHTOOL_FLASHDEV: |
| rc = ethtool_flash_device(dev, useraddr); |
| break; |
| case ETHTOOL_RESET: |
| rc = ethtool_reset(dev, useraddr); |
| break; |
| case ETHTOOL_GSSET_INFO: |
| rc = ethtool_get_sset_info(dev, useraddr); |
| break; |
| case ETHTOOL_GRXFHINDIR: |
| rc = ethtool_get_rxfh_indir(dev, useraddr); |
| break; |
| case ETHTOOL_SRXFHINDIR: |
| rc = ethtool_set_rxfh_indir(dev, useraddr); |
| break; |
| case ETHTOOL_GRSSH: |
| rc = ethtool_get_rxfh(dev, useraddr); |
| break; |
| case ETHTOOL_SRSSH: |
| rc = ethtool_set_rxfh(dev, useraddr); |
| break; |
| case ETHTOOL_GFEATURES: |
| rc = ethtool_get_features(dev, useraddr); |
| break; |
| case ETHTOOL_SFEATURES: |
| rc = ethtool_set_features(dev, useraddr); |
| break; |
| case ETHTOOL_GTXCSUM: |
| case ETHTOOL_GRXCSUM: |
| case ETHTOOL_GSG: |
| case ETHTOOL_GTSO: |
| case ETHTOOL_GGSO: |
| case ETHTOOL_GGRO: |
| rc = ethtool_get_one_feature(dev, useraddr, ethcmd); |
| break; |
| case ETHTOOL_STXCSUM: |
| case ETHTOOL_SRXCSUM: |
| case ETHTOOL_SSG: |
| case ETHTOOL_STSO: |
| case ETHTOOL_SGSO: |
| case ETHTOOL_SGRO: |
| rc = ethtool_set_one_feature(dev, useraddr, ethcmd); |
| break; |
| case ETHTOOL_GCHANNELS: |
| rc = ethtool_get_channels(dev, useraddr); |
| break; |
| case ETHTOOL_SCHANNELS: |
| rc = ethtool_set_channels(dev, useraddr); |
| break; |
| case ETHTOOL_SET_DUMP: |
| rc = ethtool_set_dump(dev, useraddr); |
| break; |
| case ETHTOOL_GET_DUMP_FLAG: |
| rc = ethtool_get_dump_flag(dev, useraddr); |
| break; |
| case ETHTOOL_GET_DUMP_DATA: |
| rc = ethtool_get_dump_data(dev, useraddr); |
| break; |
| case ETHTOOL_GET_TS_INFO: |
| rc = ethtool_get_ts_info(dev, useraddr); |
| break; |
| case ETHTOOL_GMODULEINFO: |
| rc = ethtool_get_module_info(dev, useraddr); |
| break; |
| case ETHTOOL_GMODULEEEPROM: |
| rc = ethtool_get_module_eeprom(dev, useraddr); |
| break; |
| case ETHTOOL_GTUNABLE: |
| rc = ethtool_get_tunable(dev, useraddr); |
| break; |
| case ETHTOOL_STUNABLE: |
| rc = ethtool_set_tunable(dev, useraddr); |
| break; |
| case ETHTOOL_GPHYSTATS: |
| rc = ethtool_get_phy_stats(dev, useraddr); |
| break; |
| case ETHTOOL_PERQUEUE: |
| rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); |
| break; |
| case ETHTOOL_GLINKSETTINGS: |
| rc = ethtool_get_link_ksettings(dev, useraddr); |
| break; |
| case ETHTOOL_SLINKSETTINGS: |
| rc = ethtool_set_link_ksettings(dev, useraddr); |
| break; |
| case ETHTOOL_PHY_GTUNABLE: |
| rc = get_phy_tunable(dev, useraddr); |
| break; |
| case ETHTOOL_PHY_STUNABLE: |
| rc = set_phy_tunable(dev, useraddr); |
| break; |
| case ETHTOOL_GFECPARAM: |
| rc = ethtool_get_fecparam(dev, useraddr); |
| break; |
| case ETHTOOL_SFECPARAM: |
| rc = ethtool_set_fecparam(dev, useraddr); |
| break; |
| default: |
| rc = -EOPNOTSUPP; |
| } |
| |
| if (dev->ethtool_ops->complete) |
| dev->ethtool_ops->complete(dev); |
| |
| if (old_features != dev->features) |
| netdev_features_change(dev); |
| |
| return rc; |
| } |
| |
| struct ethtool_rx_flow_key { |
| struct flow_dissector_key_basic basic; |
| union { |
| struct flow_dissector_key_ipv4_addrs ipv4; |
| struct flow_dissector_key_ipv6_addrs ipv6; |
| }; |
| struct flow_dissector_key_ports tp; |
| struct flow_dissector_key_ip ip; |
| struct flow_dissector_key_vlan vlan; |
| struct flow_dissector_key_eth_addrs eth_addrs; |
| } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ |
| |
| struct ethtool_rx_flow_match { |
| struct flow_dissector dissector; |
| struct ethtool_rx_flow_key key; |
| struct ethtool_rx_flow_key mask; |
| }; |
| |
| struct ethtool_rx_flow_rule * |
| ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) |
| { |
| const struct ethtool_rx_flow_spec *fs = input->fs; |
| static struct in6_addr zero_addr = {}; |
| struct ethtool_rx_flow_match *match; |
| struct ethtool_rx_flow_rule *flow; |
| struct flow_action_entry *act; |
| |
| flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + |
| sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); |
| if (!flow) |
| return ERR_PTR(-ENOMEM); |
| |
| /* ethtool_rx supports only one single action per rule. */ |
| flow->rule = flow_rule_alloc(1); |
| if (!flow->rule) { |
| kfree(flow); |
| return ERR_PTR(-ENOMEM); |
| } |
| |
| match = (struct ethtool_rx_flow_match *)flow->priv; |
| flow->rule->match.dissector = &match->dissector; |
| flow->rule->match.mask = &match->mask; |
| flow->rule->match.key = &match->key; |
| |
| match->mask.basic.n_proto = htons(0xffff); |
| |
| switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { |
| case TCP_V4_FLOW: |
| case UDP_V4_FLOW: { |
| const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; |
| |
| match->key.basic.n_proto = htons(ETH_P_IP); |
| |
| v4_spec = &fs->h_u.tcp_ip4_spec; |
| v4_m_spec = &fs->m_u.tcp_ip4_spec; |
| |
| if (v4_m_spec->ip4src) { |
| match->key.ipv4.src = v4_spec->ip4src; |
| match->mask.ipv4.src = v4_m_spec->ip4src; |
| } |
| if (v4_m_spec->ip4dst) { |
| match->key.ipv4.dst = v4_spec->ip4dst; |
| match->mask.ipv4.dst = v4_m_spec->ip4dst; |
| } |
| if (v4_m_spec->ip4src || |
| v4_m_spec->ip4dst) { |
| match->dissector.used_keys |= |
| BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS); |
| match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = |
| offsetof(struct ethtool_rx_flow_key, ipv4); |
| } |
| if (v4_m_spec->psrc) { |
| match->key.tp.src = v4_spec->psrc; |
| match->mask.tp.src = v4_m_spec->psrc; |
| } |
| if (v4_m_spec->pdst) { |
| match->key.tp.dst = v4_spec->pdst; |
| match->mask.tp.dst = v4_m_spec->pdst; |
| } |
| if (v4_m_spec->psrc || |
| v4_m_spec->pdst) { |
| match->dissector.used_keys |= |
| BIT(FLOW_DISSECTOR_KEY_PORTS); |
| match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = |
| offsetof(struct ethtool_rx_flow_key, tp); |
| } |
| if (v4_m_spec->tos) { |
| match->key.ip.tos = v4_spec->tos; |
| match->mask.ip.tos = v4_m_spec->tos; |
| match->dissector.used_keys |= |
| BIT(FLOW_DISSECTOR_KEY_IP); |
| match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = |
| offsetof(struct ethtool_rx_flow_key, ip); |
| } |
| } |
| break; |
| case TCP_V6_FLOW: |
| case UDP_V6_FLOW: { |
| const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; |
| |
| match->key.basic.n_proto = htons(ETH_P_IPV6); |
| |
| v6_spec = &fs->h_u.tcp_ip6_spec; |
| v6_m_spec = &fs->m_u.tcp_ip6_spec; |
| if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) { |
| memcpy(&match->key.ipv6.src, v6_spec->ip6src, |
| sizeof(match->key.ipv6.src)); |
| memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, |
| sizeof(match->mask.ipv6.src)); |
| } |
| if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) { |
| memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, |
| sizeof(match->key.ipv6.dst)); |
| memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, |
| sizeof(match->mask.ipv6.dst)); |
| } |
| if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) || |
| memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) { |
| match->dissector.used_keys |= |
| BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS); |
| match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = |
| offsetof(struct ethtool_rx_flow_key, ipv6); |
| } |
| if (v6_m_spec->psrc) { |
| match |