| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * 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. |
| */ |
| |
| #include <linux/compat.h> |
| #include <linux/etherdevice.h> |
| #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 <linux/pm_runtime.h> |
| #include <linux/utsname.h> |
| #include <net/devlink.h> |
| #include <net/ipv6.h> |
| #include <net/xdp_sock_drv.h> |
| #include <net/flow_offload.h> |
| #include <linux/ethtool_netlink.h> |
| #include "common.h" |
| |
| /* State held across locks and calls for commands which have devlink fallback */ |
| struct ethtool_devlink_compat { |
| struct devlink *devlink; |
| union { |
| struct ethtool_flash efl; |
| struct ethtool_drvinfo info; |
| }; |
| }; |
| |
| static struct devlink *netdev_to_devlink_get(struct net_device *dev) |
| { |
| if (!dev->devlink_port) |
| return NULL; |
| return devlink_try_get(dev->devlink_port->devlink); |
| } |
| |
| /* |
| * 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) |
| { |
| /* Synchronize carrier state with link watch, see also rtnl_getlink() */ |
| linkwatch_sync_dev(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 */ |
| |
| 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, |
| array_size(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_phy_ops *phy_ops = ethtool_phy_ops; |
| 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 && |
| phy_ops && phy_ops->get_sset_count) |
| return phy_ops->get_sset_count(dev->phydev); |
| |
| if (sset == ETH_SS_LINK_MODES) |
| return __ETHTOOL_LINK_MODE_MASK_NBITS; |
| |
| 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_phy_ops *phy_ops = ethtool_phy_ops; |
| 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_ops && |
| phy_ops->get_strings) |
| phy_ops->get_strings(dev->phydev, data); |
| else if (stringset == ETH_SS_LINK_MODES) |
| memcpy(data, link_mode_names, |
| __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); |
| 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_FCOE_CRC | |
| NETIF_F_SCTP_CRC; |
| case ETHTOOL_GRXCSUM: |
| case ETHTOOL_SRXCSUM: |
| return NETIF_F_RXCSUM; |
| case ETHTOOL_GSG: |
| case ETHTOOL_SSG: |
| return NETIF_F_SG | NETIF_F_FRAGLIST; |
| 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) |
| { |
| linkmode_zero(dst); |
| 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) |
| { |
| *legacy_u32 = src[0]; |
| return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == |
| __ETHTOOL_LINK_MODE_MASK_NBITS; |
| } |
| EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); |
| |
| /* 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; |
| } |
| |
| /* Check if the user is trying to change anything besides speed/duplex */ |
| bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) |
| { |
| struct ethtool_link_settings base2 = {}; |
| |
| base2.speed = cmd->base.speed; |
| base2.port = PORT_OTHER; |
| base2.duplex = cmd->base.duplex; |
| base2.cmd = cmd->base.cmd; |
| base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; |
| |
| return !memcmp(&base2, &cmd->base, sizeof(base2)) && |
| bitmap_empty(cmd->link_modes.supported, |
| __ETHTOOL_LINK_MODE_MASK_NBITS) && |
| bitmap_empty(cmd->link_modes.lp_advertising, |
| __ETHTOOL_LINK_MODE_MASK_NBITS); |
| } |
| |
| /* 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, from, 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; |
| link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; |
| link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; |
| link_ksettings.base.rate_matching = RATE_MATCH_NONE; |
| |
| 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) |
| { |
| struct ethtool_link_ksettings link_ksettings = {}; |
| int err; |
| |
| 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; |
| |
| if (link_ksettings.base.master_slave_cfg || |
| link_ksettings.base.master_slave_state) |
| return -EINVAL; |
| |
| err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); |
| if (err >= 0) { |
| ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); |
| ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); |
| } |
| return err; |
| } |
| |
| int ethtool_virtdev_set_link_ksettings(struct net_device *dev, |
| const struct ethtool_link_ksettings *cmd, |
| u32 *dev_speed, u8 *dev_duplex) |
| { |
| u32 speed; |
| u8 duplex; |
| |
| speed = cmd->base.speed; |
| duplex = cmd->base.duplex; |
| /* don't allow custom speed and duplex */ |
| if (!ethtool_validate_speed(speed) || |
| !ethtool_validate_duplex(duplex) || |
| !ethtool_virtdev_validate_cmd(cmd)) |
| return -EINVAL; |
| *dev_speed = speed; |
| *dev_duplex = duplex; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(ethtool_virtdev_set_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; |
| int ret; |
| |
| 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; |
| ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); |
| if (ret >= 0) { |
| ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); |
| ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); |
| } |
| return ret; |
| } |
| |
| static int |
| ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) |
| { |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| struct device *parent = dev->dev.parent; |
| |
| rsp->info.cmd = ETHTOOL_GDRVINFO; |
| strscpy(rsp->info.version, init_uts_ns.name.release, |
| sizeof(rsp->info.version)); |
| if (ops->get_drvinfo) { |
| ops->get_drvinfo(dev, &rsp->info); |
| if (!rsp->info.bus_info[0] && parent) |
| strscpy(rsp->info.bus_info, dev_name(parent), |
| sizeof(rsp->info.bus_info)); |
| if (!rsp->info.driver[0] && parent && parent->driver) |
| strscpy(rsp->info.driver, parent->driver->name, |
| sizeof(rsp->info.driver)); |
| } else if (parent && parent->driver) { |
| strscpy(rsp->info.bus_info, dev_name(parent), |
| sizeof(rsp->info.bus_info)); |
| strscpy(rsp->info.driver, parent->driver->name, |
| sizeof(rsp->info.driver)); |
| } else if (dev->rtnl_link_ops) { |
| strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, |
| sizeof(rsp->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) |
| rsp->info.testinfo_len = rc; |
| rc = ops->get_sset_count(dev, ETH_SS_STATS); |
| if (rc >= 0) |
| rsp->info.n_stats = rc; |
| rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); |
| if (rc >= 0) |
| rsp->info.n_priv_flags = rc; |
| } |
| if (ops->get_regs_len) { |
| int ret = ops->get_regs_len(dev); |
| |
| if (ret > 0) |
| rsp->info.regdump_len = ret; |
| } |
| |
| if (ops->get_eeprom_len) |
| rsp->info.eedump_len = ops->get_eeprom_len(dev); |
| |
| if (!rsp->info.fw_version[0]) |
| rsp->devlink = netdev_to_devlink_get(dev); |
| |
| 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, array_size(idx, sizeof(u32)))) |
| goto out; |
| |
| ret = 0; |
| |
| out: |
| kfree(info_buf); |
| return ret; |
| } |
| |
| static noinline_for_stack int |
| ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, |
| const struct compat_ethtool_rxnfc __user *useraddr, |
| size_t size) |
| { |
| struct compat_ethtool_rxnfc crxnfc = {}; |
| |
| /* We expect there to be holes between fs.m_ext and |
| * fs.ring_cookie and at the end of fs, but nowhere else. |
| * On non-x86, no conversion should be needed. |
| */ |
| BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && |
| sizeof(struct compat_ethtool_rxnfc) != |
| sizeof(struct ethtool_rxnfc)); |
| BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + |
| sizeof(useraddr->fs.m_ext) != |
| offsetof(struct ethtool_rxnfc, fs.m_ext) + |
| sizeof(rxnfc->fs.m_ext)); |
| BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - |
| offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != |
| offsetof(struct ethtool_rxnfc, fs.location) - |
| offsetof(struct ethtool_rxnfc, fs.ring_cookie)); |
| |
| if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) |
| return -EFAULT; |
| |
| *rxnfc = (struct ethtool_rxnfc) { |
| .cmd = crxnfc.cmd, |
| .flow_type = crxnfc.flow_type, |
| .data = crxnfc.data, |
| .fs = { |
| .flow_type = crxnfc.fs.flow_type, |
| .h_u = crxnfc.fs.h_u, |
| .h_ext = crxnfc.fs.h_ext, |
| .m_u = crxnfc.fs.m_u, |
| .m_ext = crxnfc.fs.m_ext, |
| .ring_cookie = crxnfc.fs.ring_cookie, |
| .location = crxnfc.fs.location, |
| }, |
| .rule_cnt = crxnfc.rule_cnt, |
| }; |
| |
| return 0; |
| } |
| |
| static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, |
| const void __user *useraddr, |
| size_t size) |
| { |
| if (compat_need_64bit_alignment_fixup()) |
| return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); |
| |
| if (copy_from_user(rxnfc, useraddr, size)) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, |
| const struct ethtool_rxnfc *rxnfc, |
| size_t size, const u32 *rule_buf) |
| { |
| struct compat_ethtool_rxnfc crxnfc; |
| |
| memset(&crxnfc, 0, sizeof(crxnfc)); |
| crxnfc = (struct compat_ethtool_rxnfc) { |
| .cmd = rxnfc->cmd, |
| .flow_type = rxnfc->flow_type, |
| .data = rxnfc->data, |
| .fs = { |
| .flow_type = rxnfc->fs.flow_type, |
| .h_u = rxnfc->fs.h_u, |
| .h_ext = rxnfc->fs.h_ext, |
| .m_u = rxnfc->fs.m_u, |
| .m_ext = rxnfc->fs.m_ext, |
| .ring_cookie = rxnfc->fs.ring_cookie, |
| .location = rxnfc->fs.location, |
| }, |
| .rule_cnt = rxnfc->rule_cnt, |
| }; |
| |
| if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, |
| size_t *info_size, void __user *useraddr) |
| { |
| /* 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 || cmd == ETHTOOL_SRXFH) |
| *info_size = (offsetof(struct ethtool_rxnfc, data) + |
| sizeof(info->data)); |
| |
| if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) |
| return -EFAULT; |
| |
| if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { |
| *info_size = sizeof(*info); |
| if (ethtool_rxnfc_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; |
| |
| return 0; |
| } |
| |
| static int ethtool_rxnfc_copy_to_user(void __user *useraddr, |
| const struct ethtool_rxnfc *rxnfc, |
| size_t size, const u32 *rule_buf) |
| { |
| int ret; |
| |
| if (compat_need_64bit_alignment_fixup()) { |
| ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, |
| rule_buf); |
| useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); |
| } else { |
| ret = copy_to_user(useraddr, rxnfc, size); |
| useraddr += offsetof(struct ethtool_rxnfc, rule_locs); |
| } |
| |
| if (ret) |
| return -EFAULT; |
| |
| if (rule_buf) { |
| if (copy_to_user(useraddr, rule_buf, |
| rxnfc->rule_cnt * sizeof(u32))) |
| return -EFAULT; |
| } |
| |
| return 0; |
| } |
| |
| static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, |
| u32 cmd, void __user *useraddr) |
| { |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| struct ethtool_rxnfc info; |
| size_t info_size = sizeof(info); |
| int rc; |
| |
| if (!ops->set_rxnfc) |
| return -EOPNOTSUPP; |
| |
| rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); |
| if (rc) |
| return rc; |
| |
| if (ops->get_rxfh) { |
| struct ethtool_rxfh_param rxfh = {}; |
| |
| rc = ops->get_rxfh(dev, &rxfh); |
| if (rc) |
| return rc; |
| |
| /* Sanity check: if symmetric-xor is set, then: |
| * 1 - no other fields besides IP src/dst and/or L4 src/dst |
| * 2 - If src is set, dst must also be set |
| */ |
| if ((rxfh.input_xfrm & RXH_XFRM_SYM_XOR) && |
| ((info.data & ~(RXH_IP_SRC | RXH_IP_DST | |
| RXH_L4_B_0_1 | RXH_L4_B_2_3)) || |
| (!!(info.data & RXH_IP_SRC) ^ !!(info.data & RXH_IP_DST)) || |
| (!!(info.data & RXH_L4_B_0_1) ^ !!(info.data & RXH_L4_B_2_3)))) |
| return -EINVAL; |
| } |
| |
| rc = ops->set_rxnfc(dev, &info); |
| if (rc) |
| return rc; |
| |
| if (cmd == ETHTOOL_SRXCLSRLINS && |
| ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) |
| 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; |
| |
| ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); |
| if (ret) |
| return ret; |
| |
| 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 = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); |
| 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, array_size(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 noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, |
| void __user *useraddr) |
| { |
| struct ethtool_rxfh_param rxfh = {}; |
| u32 user_size; |
| int ret; |
| |
| if (!dev->ethtool_ops->get_rxfh_indir_size || |
| !dev->ethtool_ops->get_rxfh) |
| return -EOPNOTSUPP; |
| rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); |
| if (rxfh.indir_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), |
| &rxfh.indir_size, sizeof(rxfh.indir_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 < rxfh.indir_size) |
| return user_size == 0 ? 0 : -EINVAL; |
| |
| rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); |
| if (!rxfh.indir) |
| return -ENOMEM; |
| |
| ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); |
| if (ret) |
| goto out; |
| if (copy_to_user(useraddr + |
| offsetof(struct ethtool_rxfh_indir, ring_index[0]), |
| rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) |
| ret = -EFAULT; |
| |
| out: |
| kfree(rxfh.indir); |
| return ret; |
| } |
| |
| static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, |
| void __user *useraddr) |
| { |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| struct ethtool_rxfh_param rxfh_dev = {}; |
| struct netlink_ext_ack *extack = NULL; |
| struct ethtool_rxnfc rx_rings; |
| u32 user_size, i; |
| 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; |
| |
| rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); |
| if (rxfh_dev.indir_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 != rxfh_dev.indir_size) |
| return -EINVAL; |
| |
| rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, |
| sizeof(rxfh_dev.indir[0]), GFP_USER); |
| if (!rxfh_dev.indir) |
| return -ENOMEM; |
| |
| rx_rings.cmd = ETHTOOL_GRXRINGS; |
| ret = ops->get_rxnfc(dev, &rx_rings, NULL); |
| if (ret) |
| goto out; |
| |
| if (user_size == 0) { |
| u32 *indir = rxfh_dev.indir; |
| |
| for (i = 0; i < rxfh_dev.indir_size; i++) |
| indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); |
| } else { |
| ret = ethtool_copy_validate_indir(rxfh_dev.indir, |
| useraddr + ringidx_offset, |
| &rx_rings, |
| rxfh_dev.indir_size); |
| if (ret) |
| goto out; |
| } |
| |
| rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; |
| ret = ops->set_rxfh(dev, &rxfh_dev, extack); |
| 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(rxfh_dev.indir); |
| return ret; |
| } |
| |
| static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, |
| void __user *useraddr) |
| { |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| struct ethtool_rxfh_param rxfh_dev = {}; |
| u32 user_indir_size, user_key_size; |
| struct ethtool_rxfh rxfh; |
| u32 indir_bytes; |
| u8 *rss_config; |
| u32 total_size; |
| int ret; |
| |
| if (!ops->get_rxfh) |
| return -EOPNOTSUPP; |
| |
| if (ops->get_rxfh_indir_size) |
| rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); |
| if (ops->get_rxfh_key_size) |
| rxfh_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.rsvd32) |
| return -EINVAL; |
| /* Most drivers don't handle rss_context, check it's 0 as well */ |
| if (rxfh.rss_context && !ops->cap_rss_ctx_supported) |
| return -EOPNOTSUPP; |
| |
| rxfh.indir_size = rxfh_dev.indir_size; |
| rxfh.key_size = rxfh_dev.key_size; |
| if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) |
| return -EFAULT; |
| |
| if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || |
| (user_key_size && user_key_size != rxfh_dev.key_size)) |
| return -EINVAL; |
| |
| indir_bytes = user_indir_size * sizeof(rxfh_dev.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) |
| rxfh_dev.indir = (u32 *)rss_config; |
| |
| if (user_key_size) |
| rxfh_dev.key = rss_config + indir_bytes; |
| |
| rxfh_dev.rss_context = rxfh.rss_context; |
| |
| ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); |
| if (ret) |
| goto out; |
| |
| if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), |
| &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { |
| ret = -EFAULT; |
| } else if (copy_to_user(useraddr + |
| offsetof(struct ethtool_rxfh, input_xfrm), |
| &rxfh_dev.input_xfrm, |
| sizeof(rxfh.input_xfrm))) { |
| 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) |
| { |
| u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| u32 dev_indir_size = 0, dev_key_size = 0, i; |
| struct ethtool_rxfh_param rxfh_dev = {}; |
| struct netlink_ext_ack *extack = NULL; |
| struct ethtool_rxnfc rx_rings; |
| struct ethtool_rxfh rxfh; |
| u32 indir_bytes = 0; |
| u8 *rss_config; |
| int ret; |
| |
| 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.rsvd32) |
| return -EINVAL; |
| /* Most drivers don't handle rss_context, check it's 0 as well */ |
| if (rxfh.rss_context && !ops->cap_rss_ctx_supported) |
| return -EOPNOTSUPP; |
| /* Check input data transformation capabilities */ |
| if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && |
| rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) |
| return -EINVAL; |
| if ((rxfh.input_xfrm & RXH_XFRM_SYM_XOR) && |
| !ops->cap_rss_sym_xor_supported) |
| return -EOPNOTSUPP; |
| |
| /* If either indir, hash key or function is valid, proceed further. |
| * Must request at least one change: indir size, hash key, function |
| * or input transformation. |
| */ |
| 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 && |
| rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) |
| return -EINVAL; |
| |
| if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) |
| indir_bytes = dev_indir_size * sizeof(rxfh_dev.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) { |
| rxfh_dev.indir = (u32 *)rss_config; |
| rxfh_dev.indir_size = dev_indir_size; |
| ret = ethtool_copy_validate_indir(rxfh_dev.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) { |
| u32 *indir; |
| |
| rxfh_dev.indir = (u32 *)rss_config; |
| rxfh_dev.indir_size = dev_indir_size; |
| indir = rxfh_dev.indir; |
| for (i = 0; i < dev_indir_size; i++) |
| indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); |
| } else { |
| rxfh_dev.rss_delete = true; |
| } |
| } |
| |
| if (rxfh.key_size) { |
| rxfh_dev.key_size = dev_key_size; |
| rxfh_dev.key = rss_config + indir_bytes; |
| if (copy_from_user(rxfh_dev.key, |
| useraddr + rss_cfg_offset + indir_bytes, |
| rxfh.key_size)) { |
| ret = -EFAULT; |
| goto out; |
| } |
| } |
| |
| rxfh_dev.hfunc = rxfh.hfunc; |
| rxfh_dev.rss_context = rxfh.rss_context; |
| rxfh_dev.input_xfrm = rxfh.input_xfrm; |
| |
| ret = ops->set_rxfh(dev, &rxfh_dev, extack); |
| if (ret) |
| goto out; |
| |
| if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), |
| &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) |
| ret = -EFAULT; |
| |
| if (!rxfh_dev.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; |
| |
| if (regs.len < reglen) |
| reglen = regs.len; |
| |
| 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 (copy_to_user(useraddr, regbuf, reglen)) |
| 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; |
| |
| if (!dev->ethtool_ops->get_wol) |
| return -EOPNOTSUPP; |
| |
| memset(&wol, 0, sizeof(struct ethtool_wolinfo)); |
| wol.cmd = ETHTOOL_GWOL; |
| 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, cur_wol; |
| int ret; |
| |
| if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) |
| return -EOPNOTSUPP; |
| |
| memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); |
| cur_wol.cmd = ETHTOOL_GWOL; |
| dev->ethtool_ops->get_wol(dev, &cur_wol); |
| |
| if (copy_from_user(&wol, useraddr, sizeof(wol))) |
| return -EFAULT; |
| |
| if (wol.wolopts & ~cur_wol.supported) |
| return -EINVAL; |
| |
| if (wol.wolopts == cur_wol.wolopts && |
| !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) |
| return 0; |
| |
| ret = dev->ethtool_ops->set_wol(dev, &wol); |
| if (ret) |
| return ret; |
| |
| dev->wol_enabled = !!wol.wolopts; |
| ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); |
| |
| return 0; |
| } |
| |
| static void eee_to_keee(struct ethtool_keee *keee, |
| const struct ethtool_eee *eee) |
| { |
| memset(keee, 0, sizeof(*keee)); |
| |
| keee->eee_enabled = eee->eee_enabled; |
| keee->tx_lpi_enabled = eee->tx_lpi_enabled; |
| keee->tx_lpi_timer = eee->tx_lpi_timer; |
| |
| ethtool_convert_legacy_u32_to_link_mode(keee->advertised, |
| eee->advertised); |
| } |
| |
| static void keee_to_eee(struct ethtool_eee *eee, |
| const struct ethtool_keee *keee) |
| { |
| bool overflow; |
| |
| memset(eee, 0, sizeof(*eee)); |
| |
| eee->eee_active = keee->eee_active; |
| eee->eee_enabled = keee->eee_enabled; |
| eee->tx_lpi_enabled = keee->tx_lpi_enabled; |
| eee->tx_lpi_timer = keee->tx_lpi_timer; |
| |
| overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, |
| keee->supported); |
| ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, |
| keee->advertised); |
| ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, |
| keee->lp_advertised); |
| if (overflow) |
| pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); |
| } |
| |
| static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_keee keee; |
| struct ethtool_eee eee; |
| int rc; |
| |
| if (!dev->ethtool_ops->get_eee) |
| return -EOPNOTSUPP; |
| |
| memset(&keee, 0, sizeof(keee)); |
| rc = dev->ethtool_ops->get_eee(dev, &keee); |
| if (rc) |
| return rc; |
| |
| keee_to_eee(&eee, &keee); |
| if (copy_to_user(useraddr, &eee, sizeof(eee))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) |
| { |
| struct ethtool_keee keee; |
| struct ethtool_eee eee; |
| int ret; |
| |
| if (!dev->ethtool_ops->set_eee) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&eee, useraddr, sizeof(eee))) |
| return -EFAULT; |
| |
| eee_to_keee(&keee, &eee); |
| ret = dev->ethtool_ops->set_eee(dev, &keee); |
| if (!ret) |
| ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); |
| return ret; |
| } |
| |
| 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 }; |
| int link = __ethtool_get_link(dev); |
| |
| if (link < 0) |
| return link; |
| |
| edata.data = link; |
| 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 = kzalloc(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 (!eeprom.len) { |
| ret = -EIO; |
| 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 = kzalloc(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 }; |
| struct kernel_ethtool_coalesce kernel_coalesce = {}; |
| int ret; |
| |
| if (!dev->ethtool_ops->get_coalesce) |
| return -EOPNOTSUPP; |
| |
| ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, |
| NULL); |
| if (ret) |
| return ret; |
| |
| if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static bool |
| ethtool_set_coalesce_supported(struct net_device *dev, |
| struct ethtool_coalesce *coalesce) |
| { |
| u32 supported_params = dev->ethtool_ops->supported_coalesce_params; |
| u32 nonzero_params = 0; |
| |
| if (coalesce->rx_coalesce_usecs) |
| nonzero_params |= ETHTOOL_COALESCE_RX_USECS; |
| if (coalesce->rx_max_coalesced_frames) |
| nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; |
| if (coalesce->rx_coalesce_usecs_irq) |
| nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; |
| if (coalesce->rx_max_coalesced_frames_irq) |
| nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; |
| if (coalesce->tx_coalesce_usecs) |
| nonzero_params |= ETHTOOL_COALESCE_TX_USECS; |
| if (coalesce->tx_max_coalesced_frames) |
| nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; |
| if (coalesce->tx_coalesce_usecs_irq) |
| nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; |
| if (coalesce->tx_max_coalesced_frames_irq) |
| nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; |
| if (coalesce->stats_block_coalesce_usecs) |
| nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; |
| if (coalesce->use_adaptive_rx_coalesce) |
| nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; |
| if (coalesce->use_adaptive_tx_coalesce) |
| nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; |
| if (coalesce->pkt_rate_low) |
| nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; |
| if (coalesce->rx_coalesce_usecs_low) |
| nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; |
| if (coalesce->rx_max_coalesced_frames_low) |
| nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; |
| if (coalesce->tx_coalesce_usecs_low) |
| nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; |
| if (coalesce->tx_max_coalesced_frames_low) |
| nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; |
| if (coalesce->pkt_rate_high) |
| nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; |
| if (coalesce->rx_coalesce_usecs_high) |
| nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; |
| if (coalesce->rx_max_coalesced_frames_high) |
| nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; |
| if (coalesce->tx_coalesce_usecs_high) |
| nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; |
| if (coalesce->tx_max_coalesced_frames_high) |
| nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; |
| if (coalesce->rate_sample_interval) |
| nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; |
| |
| return (supported_params & nonzero_params) == nonzero_params; |
| } |
| |
| static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, |
| void __user *useraddr) |
| { |
| struct kernel_ethtool_coalesce kernel_coalesce = {}; |
| struct ethtool_coalesce coalesce; |
| int ret; |
| |
| if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) |
| return -EOPNOTSUPP; |
| |
| ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, |
| NULL); |
| if (ret) |
| return ret; |
| |
| if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) |
| return -EFAULT; |
| |
| if (!ethtool_set_coalesce_supported(dev, &coalesce)) |
| return -EOPNOTSUPP; |
| |
| ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, |
| NULL); |
| if (!ret) |
| ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); |
| return ret; |
| } |
| |
| static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) |
| { |
| struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; |
| struct kernel_ethtool_ringparam kernel_ringparam = {}; |
| |
| if (!dev->ethtool_ops->get_ringparam) |
| return -EOPNOTSUPP; |
| |
| dev->ethtool_ops->get_ringparam(dev, &ringparam, |
| &kernel_ringparam, NULL); |
| |
| 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 }; |
| struct kernel_ethtool_ringparam kernel_ringparam; |
| int ret; |
| |
| 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, &kernel_ringparam, NULL); |
| |
| /* 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; |
| |
| ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, |
| &kernel_ringparam, NULL); |
| if (!ret) |
| ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); |
| return ret; |
| } |
| |
| 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; |
| u64 max_rxnfc_in_use; |
| u32 max_rxfh_in_use; |
| unsigned int i; |
| int ret; |
| |
| 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); |
| |
| if (channels.rx_count == curr.rx_count && |
| channels.tx_count == curr.tx_count && |
| channels.combined_count == curr.combined_count && |
| channels.other_count == curr.other_count) |
| return 0; |
| |
| /* 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 there is at least one RX and one TX channel */ |
| if (!channels.combined_count && |
| (!channels.rx_count || !channels.tx_count)) |
| return -EINVAL; |
| |
| /* ensure the new Rx count fits within the configured Rx flow |
| * indirection table/rxnfc settings */ |
| if (ethtool_get_max_rxnfc_channel(dev, &max_rxnfc_in_use)) |
| max_rxnfc_in_use = 0; |
| if (!netif_is_rxfh_configured(dev) || |
| ethtool_get_max_rxfh_channel(dev, &max_rxfh_in_use)) |
| max_rxfh_in_use = 0; |
| if (channels.combined_count + channels.rx_count <= |
| max_t(u64, max_rxnfc_in_use, max_rxfh_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 (xsk_get_pool_from_qid(dev, i)) |
| return -EINVAL; |
| |
| ret = dev->ethtool_ops->set_channels(dev, &channels); |
| if (!ret) |
| ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); |
| return ret; |
| } |
| |
| 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; |
| int ret; |
| |
| if (!dev->ethtool_ops->set_pauseparam) |
| return -EOPNOTSUPP; |
| |
| if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) |
| return -EFAULT; |
| |
| ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); |
| if (!ret) |
| ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); |
| return ret; |
| } |
| |
| 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 = kcalloc(test_len, sizeof(u64), GFP_USER); |
| if (!data) |
| return -ENOMEM; |
| |
| netif_testing_on(dev); |
| ops->self_test(dev, &test, data); |
| netif_testing_off(dev); |
| |
| ret = -EFAULT; |
| if (copy_to_user(useraddr, &test, sizeof(test))) |
| goto out; |
| useraddr += sizeof(test); |
| if (copy_to_user(useraddr, data, array_size(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, |
| array_size(gstrings.len, ETH_GSTRING_LEN))) |
| goto out; |
| ret = 0; |
| |
| out: |
| vfree(data); |
| return ret; |
| } |
| |
| __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) |
| { |
| va_list args; |
| |
| va_start(args, fmt); |
| vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); |
| va_end(args); |
| |
| *data += ETH_GSTRING_LEN; |
| } |
| EXPORT_SYMBOL(ethtool_sprintf); |
| |
| void ethtool_puts(u8 **data, const char *str) |
| { |
| strscpy(*data, str, ETH_GSTRING_LEN); |
| *data += ETH_GSTRING_LEN; |
| } |
| EXPORT_SYMBOL(ethtool_puts); |
| |
| 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; |
| netdevice_tracker dev_tracker; |
| 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; |
| netdev_hold(dev, &dev_tracker, GFP_KERNEL); |
| 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, interval = HZ / n; |
| u64 count = mul_u32_u32(n, id.data); |
| u64 i = 0; |
| |
| 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) && (!id.data || i < count)); |
| } |
| |
| rtnl_lock(); |
| netdev_put(dev, &dev_tracker); |
| 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, array_size(n_stats, sizeof(u64)))) |
| goto out; |
| ret = 0; |
| |
| out: |
| vfree(data); |
| return ret; |
| } |
| |
| static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) |
| { |
| if (n_stats < 0) |
| return n_stats; |
| if (n_stats > S32_MAX / sizeof(u64)) |
| return -ENOMEM; |
| if (WARN_ON_ONCE(!n_stats)) |
| return -EOPNOTSUPP; |
| |
| *data = vzalloc(array_size(n_stats, sizeof(u64))); |
| if (!*data) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, |
| struct ethtool_stats *stats, |
| u64 **data) |
| { |
| const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; |
| int n_stats, ret; |
| |
| if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) |
| return -EOPNOTSUPP; |
| |
| n_stats = phy_ops->get_sset_count(phydev); |
| |
| ret = ethtool_vzalloc_stats_array(n_stats, data); |
| if (ret) |
| return ret; |
| |
| stats->n_stats = n_stats; |
| return phy_ops->get_stats(phydev, stats, *data); |
| } |
| |
| static int ethtool_get_phy_stats_ethtool(struct net_device *dev, |
| struct ethtool_stats *stats, |
| u64 **data) |
| { |
| const struct ethtool_ops *ops = dev->ethtool_ops; |
| int n_stats, ret; |
| |
| if (!ops || !ops->get_sset_count || ops->get_ethtool_phy_stats) |
| return -EOPNOTSUPP; |
| |
| n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); |
| |
| ret = ethtool_vzalloc_stats_array(n_stats, data); |
| if (ret) |
| return ret; |
| |
| stats->n_stats = n_stats; |
| ops->get_ethtool_phy_stats(dev, stats, *data); |
| |
| return 0; |
| } |
| |
| static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) |
| { |
| struct phy_device *phydev = dev->phydev; |
| struct ethtool_stats stats; |
| u64 *data = NULL; |
| int ret = -EOPNOTSUPP; |
| |
| if (copy_from_user(&stats, useraddr, sizeof(stats))) |
| return -EFAULT; |
| |
| if (phydev) |
| ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); |
| |
| if (ret == -EOPNOTSUPP) |
| ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); |
| |
| if (ret) |
| goto out; |
| |
| if (copy_to_user(useraddr, &stats, sizeof(stats))) { |
| ret = -EFAULT; |
| goto out; |
| } |
| |
| useraddr += sizeof(stats); |
| if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) |
| ret = -EFAULT; |
| |
| 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 int |
| ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) |
| { |
| if (!dev->ethtool_ops->flash_device) { |
| req->devlink = netdev_to_devlink_get(dev); |
| return 0; |
| } |
| |
| return dev->ethtool_ops->flash_device(dev, &req->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) |
| { |
| struct ethtool_ts_info info; |
| int err; |
| |
| err = __ethtool_get_ts_info(dev, &info); |
| if (err) |
| return err; |
| |
| if (copy_to_user(useraddr, &info, sizeof(info))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| int ethtool_get_module_info_call(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_call(dev, &modinfo); |
| if (ret) |
| return ret; |
| |
| if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| int ethtool_get_module_eeprom_call(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_call(dev, &modinfo); |
| if (ret) |
| return ret; |
| |
| return ethtool_get_any_eeprom(dev, useraddr, |
| ethtool_get_module_eeprom_call, |
| modinfo.eeprom_len); |
| } |
| |
| static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) |
| { |
| switch (tuna->id) { |
| case ETHTOOL_RX_COPYBREAK: |
| case ETHTOOL_TX_COPYBREAK: |
| case ETHTOOL_TX_COPYBREAK_BUF_SIZE: |
| 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 = kzalloc(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; |
| } |
| |
| if (!ethtool_set_coalesce_supported(dev, &coalesce)) { |
| ret = -EOPNOTSUPP; |
| 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: |
| case ETHTOOL_PHY_FAST_LINK_DOWN: |
| if (tuna->len != sizeof(u8) || |
| tuna->type_id != ETHTOOL_TUNABLE_U8) |
| return -EINVAL; |
| break; |
| case ETHTOOL_PHY_EDPD: |
| if (tuna->len != sizeof(u16) || |
| tuna->type_id != ETHTOOL_TUNABLE_U16) |
| return -EINVAL; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int get_phy_tunable(struct net_device *dev, void __user *useraddr) |
| { |
| struct phy_device *phydev = dev->phydev; |
| struct ethtool_tunable tuna; |
| bool phy_drv_tunable; |
| void *data; |
| int ret; |
| |
| phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; |
| if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) |
| return -EOPNOTSUPP; |
| if (copy_from_user(&tuna, useraddr, sizeof(tuna))) |
| return -EFAULT; |
| ret = ethtool_phy_tunable_valid(&tuna); |
| if (ret) |
| return ret; |
| data = kzalloc(tuna.len, GFP_USER); |
| if (!data) |
| return -ENOMEM; |
| if (phy_drv_tunable) { |
| mutex_lock(&phydev->lock); |
| ret = phydev->drv->get_tunable(phydev, &tuna, data); |
| mutex_unlock(&phydev->lock); |
| } else { |
| ret = dev->ethtool_ops->get_phy_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 set_phy_tunable(struct net_device *dev, void __user *useraddr) |
| { |
| struct phy_device *phydev = dev->phydev; |
| struct ethtool_tunable tuna; |
| bool phy_drv_tunable; |
| void *data; |
| int ret; |
| |
| phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; |
| if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_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); |
| if (phy_drv_tunable) { |
| mutex_lock(&phydev->lock); |
| ret = phydev->drv->set_tunable(phydev, &tuna, data); |
| mutex_unlock(&phydev->lock); |
| } else { |
| ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); |
| } |
| |
| 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 (WARN_ON_ONCE(fecparam.reserved)) |
| fecparam.reserved = 0; |
| |
| 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; |
| |
| if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) |
| return -EINVAL; |
| |
| fecparam.active_fec = 0; |
| fecparam.reserved = 0; |
| |
| return dev->ethtool_ops->set_fecparam(dev, &fecparam); |
| } |
| |
| /* The main entry point in this file. Called from net/core/dev_ioctl.c */ |
| |
| static int |
| __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, |
| u32 ethcmd, struct ethtool_devlink_compat *devlink_state) |
| { |
| struct net_device *dev; |
| u32 sub_cmd; |
| int rc; |
| netdev_features_t old_features; |
| |
| dev = __dev_get_by_name(net, ifr->ifr_name); |
| if (!dev) |
| return -ENODEV; |
| |
| 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->dev.parent) |
| pm_runtime_get_sync(dev->dev.parent); |
| |
| if (!netif_device_present(dev)) { |
| rc = -ENODEV; |
| goto out; |
| } |
| |
| if (dev->ethtool_ops->begin) { |
| rc = dev->ethtool_ops->begin(dev); |
| if (rc < 0) |
| goto out; |
| } |
| 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, devlink_state); |
| 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); |
| if (!rc) |
| ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); |
| 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); |
| if (!rc) |
| ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); |
| 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, devlink_state); |
| 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); |
| out: |
| if (dev->dev.parent) |
| pm_runtime_put(dev->dev.parent); |
| |
| return rc; |
| } |
| |
| int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) |
| { |
| struct ethtool_devlink_compat *state; |
| u32 ethcmd; |
| int rc; |
| |
| if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) |
| return -EFAULT; |
| |
| state = kzalloc(sizeof(*state), GFP_KERNEL); |
| if (!state) |
| return -ENOMEM; |
| |
| switch (ethcmd) { |
| case ETHTOOL_FLASHDEV: |
| if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { |
| rc = -EFAULT; |
| goto exit_free; |
| } |
| state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; |
| break; |
| } |
| |
| rtnl_lock(); |
| rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); |
| rtnl_unlock(); |
| if (rc) |
| goto exit_free; |
| |
| switch (ethcmd) { |
| case ETHTOOL_FLASHDEV: |
| if (state->devlink) |
| rc = devlink_compat_flash_update(state->devlink, |
| state->efl.data); |
| break; |
| case ETHTOOL_GDRVINFO: |
| if (state->devlink) |
| devlink_compat_running_version(state->devlink, |
| state->info.fw_version, |
| sizeof(state->info.fw_version)); |
| if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { |
| rc = -EFAULT; |
| goto exit_free; |
| } |
| break; |
| } |
| |
| exit_free: |
| if (state->devlink) |
| devlink_put(state->devlink); |
| kfree(state); |
| 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; |
| 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 ETHER_FLOW: { |
| const struct ethhdr *ether_spec, *ether_m_spec; |
| |
| ether_spec = &fs->h_u.ether_spec; |
| ether_m_spec = &fs->m_u.ether_spec; |
| |
| if (!is_zero_ether_addr(ether_m_spec->h_source)) { |
| ether_addr_copy(match->key.eth_addrs.src, |
| ether_spec->h_source); |
| ether_addr_copy(match->mask.eth_addrs.src, |
| ether_m_spec->h_source); |
| } |
| if (!is_zero_ether_addr(ether_m_spec->h_dest)) { |
| ether_addr_copy(match->key.eth_addrs.dst, |
| ether_spec->h_dest); |
| ether_addr_copy(match->mask.eth_addrs.dst, |
| ether_m_spec->h_dest); |
| } |
| if (ether_m_spec->h_proto) { |
| match->key.basic.n_proto = ether_spec->h_proto; |
| match->mask.basic.n_proto = ether_m_spec->h_proto; |
| } |
| } |
| break; |
| 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_ULL(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_ULL(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 (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { |
| 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 (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { |
| 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 (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || |
| !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { |
| match->dissector.used_keys |= |
| BIT_ULL(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->key.tp.src = v6_spec->psrc; |
| match->mask.tp.src = v6_m_spec->psrc; |
| } |
| if (v6_m_spec->pdst) { |
| match->key.tp.dst = v6_spec->pdst; |
| match->mask.tp.dst = v6_m_spec->pdst; |
| } |
| if (v6_m_spec->psrc || |
| v6_m_spec->pdst) { |
| match->dissector.used_keys |= |
| BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); |
| match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = |
| offsetof(struct ethtool_rx_flow_key, tp); |
| } |
| if (v6_m_spec->tclass) { |
| match->key.ip.tos = v6_spec->tclass; |
| match->mask.ip.tos = v6_m_spec->tclass; |
| match->dissector.used_keys |= |
| BIT_ULL(FLOW_DISSECTOR_KEY_IP); |
| match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = |
| offsetof(struct ethtool_rx_flow_key, ip); |
| } |
| } |
| break; |
| default: |
| ethtool_rx_flow_rule_destroy(flow); |
| return ERR_PTR(-EINVAL); |
| } |
| |
| switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { |
| case TCP_V4_FLOW: |
| case TCP_V6_FLOW: |
| match->key.basic.ip_proto = IPPROTO_TCP; |
| match->mask.basic.ip_proto = 0xff; |
| break; |
| case UDP_V4_FLOW: |
| case UDP_V6_FLOW: |
| match->key.basic.ip_proto = IPPROTO_UDP; |
| match->mask.basic.ip_proto = 0xff; |
| break; |
| } |
| |
| match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); |
| match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = |
| offsetof(struct ethtool_rx_flow_key, basic); |
| |
| if (fs->flow_type & FLOW_EXT) { |
| const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; |
| const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; |
| |
| if (ext_m_spec->vlan_etype) { |
| match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; |
| match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; |
| } |
| |
| if (ext_m_spec->vlan_tci) { |
| match->key.vlan.vlan_id = |
| ntohs(ext_h_spec->vlan_tci) & 0x0fff; |
| match->mask.vlan.vlan_id = |
| ntohs(ext_m_spec->vlan_tci) & 0x0fff; |
| |
| match->key.vlan.vlan_dei = |
| !!(ext_h_spec->vlan_tci & htons(0x1000)); |
| match->mask.vlan.vlan_dei = |
| !!(ext_m_spec->vlan_tci & htons(0x1000)); |
| |
| match->key.vlan.vlan_priority = |
| (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; |
| match->mask.vlan.vlan_priority = |
| (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; |
| } |
| |
| if (ext_m_spec->vlan_etype || |
| ext_m_spec->vlan_tci) { |
| match->dissector.used_keys |= |
| BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); |
| match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = |
| offsetof(struct ethtool_rx_flow_key, vlan); |
| } |
| } |
| if (fs->flow_type & FLOW_MAC_EXT) { |
| const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; |
| const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; |
| |
| memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, |
| ETH_ALEN); |
| memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, |
| ETH_ALEN); |
| |
| match->dissector.used_keys |= |
| BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); |
| match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = |
| offsetof(struct ethtool_rx_flow_key, eth_addrs); |
| } |
| |
| act = &flow->rule->action.entries[0]; |
| switch (fs->ring_cookie) { |
| case RX_CLS_FLOW_DISC: |
| act->id = FLOW_ACTION_DROP; |
| break; |
| case RX_CLS_FLOW_WAKE: |
| act->id = FLOW_ACTION_WAKE; |
| break; |
| default: |
| act->id = FLOW_ACTION_QUEUE; |
| if (fs->flow_type & FLOW_RSS) |
| act->queue.ctx = input->rss_ctx; |
| |
| act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); |
| act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); |
| break; |
| } |
| |
| return flow; |
| } |
| EXPORT_SYMBOL(ethtool_rx_flow_rule_create); |
| |
| void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) |
| { |
| kfree(flow->rule); |
| kfree(flow); |
| } |
| EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); |
