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1957 lines
47 KiB
1957 lines
47 KiB
/* |
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* net/core/ethtool.c - Ethtool ioctl handler |
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* Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> |
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* |
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* This file is where we call all the ethtool_ops commands to get |
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* the information ethtool needs. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/types.h> |
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#include <linux/capability.h> |
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#include <linux/errno.h> |
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#include <linux/ethtool.h> |
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#include <linux/netdevice.h> |
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#include <linux/net_tstamp.h> |
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#include <linux/phy.h> |
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#include <linux/bitops.h> |
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#include <linux/uaccess.h> |
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#include <linux/vmalloc.h> |
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#include <linux/slab.h> |
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#include <linux/rtnetlink.h> |
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#include <linux/sched.h> |
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|
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/* |
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* Some useful ethtool_ops methods that're device independent. |
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* If we find that all drivers want to do the same thing here, |
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* we can turn these into dev_() function calls. |
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*/ |
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|
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u32 ethtool_op_get_link(struct net_device *dev) |
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{ |
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return netif_carrier_ok(dev) ? 1 : 0; |
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} |
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EXPORT_SYMBOL(ethtool_op_get_link); |
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|
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int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) |
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{ |
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info->so_timestamping = |
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SOF_TIMESTAMPING_TX_SOFTWARE | |
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SOF_TIMESTAMPING_RX_SOFTWARE | |
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SOF_TIMESTAMPING_SOFTWARE; |
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info->phc_index = -1; |
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return 0; |
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} |
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EXPORT_SYMBOL(ethtool_op_get_ts_info); |
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|
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/* Handlers for each ethtool command */ |
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|
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#define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32) |
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|
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static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = { |
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[NETIF_F_SG_BIT] = "tx-scatter-gather", |
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[NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4", |
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[NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic", |
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[NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6", |
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[NETIF_F_HIGHDMA_BIT] = "highdma", |
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[NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist", |
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[NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert", |
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|
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[NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse", |
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[NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter", |
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[NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert", |
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[NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse", |
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[NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter", |
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[NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged", |
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[NETIF_F_GSO_BIT] = "tx-generic-segmentation", |
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[NETIF_F_LLTX_BIT] = "tx-lockless", |
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[NETIF_F_NETNS_LOCAL_BIT] = "netns-local", |
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[NETIF_F_GRO_BIT] = "rx-gro", |
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[NETIF_F_LRO_BIT] = "rx-lro", |
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|
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[NETIF_F_TSO_BIT] = "tx-tcp-segmentation", |
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[NETIF_F_UFO_BIT] = "tx-udp-fragmentation", |
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[NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust", |
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[NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation", |
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[NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation", |
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[NETIF_F_FSO_BIT] = "tx-fcoe-segmentation", |
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[NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation", |
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[NETIF_F_GSO_IPIP_BIT] = "tx-ipip-segmentation", |
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[NETIF_F_GSO_SIT_BIT] = "tx-sit-segmentation", |
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[NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation", |
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[NETIF_F_GSO_MPLS_BIT] = "tx-mpls-segmentation", |
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|
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[NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc", |
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[NETIF_F_SCTP_CSUM_BIT] = "tx-checksum-sctp", |
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[NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu", |
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[NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter", |
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[NETIF_F_RXHASH_BIT] = "rx-hashing", |
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[NETIF_F_RXCSUM_BIT] = "rx-checksum", |
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[NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy", |
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[NETIF_F_LOOPBACK_BIT] = "loopback", |
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[NETIF_F_RXFCS_BIT] = "rx-fcs", |
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[NETIF_F_RXALL_BIT] = "rx-all", |
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[NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload", |
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[NETIF_F_BUSY_POLL_BIT] = "busy-poll", |
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}; |
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static int ethtool_get_features(struct net_device *dev, void __user *useraddr) |
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{ |
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struct ethtool_gfeatures cmd = { |
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.cmd = ETHTOOL_GFEATURES, |
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.size = ETHTOOL_DEV_FEATURE_WORDS, |
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}; |
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struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; |
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u32 __user *sizeaddr; |
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u32 copy_size; |
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int i; |
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|
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/* in case feature bits run out again */ |
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BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); |
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for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { |
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features[i].available = (u32)(dev->hw_features >> (32 * i)); |
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features[i].requested = (u32)(dev->wanted_features >> (32 * i)); |
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features[i].active = (u32)(dev->features >> (32 * i)); |
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features[i].never_changed = |
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(u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); |
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} |
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sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); |
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if (get_user(copy_size, sizeaddr)) |
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return -EFAULT; |
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if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) |
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copy_size = ETHTOOL_DEV_FEATURE_WORDS; |
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if (copy_to_user(useraddr, &cmd, sizeof(cmd))) |
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return -EFAULT; |
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useraddr += sizeof(cmd); |
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if (copy_to_user(useraddr, features, copy_size * sizeof(*features))) |
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return -EFAULT; |
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return 0; |
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} |
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static int ethtool_set_features(struct net_device *dev, void __user *useraddr) |
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{ |
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struct ethtool_sfeatures cmd; |
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struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; |
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netdev_features_t wanted = 0, valid = 0; |
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int i, ret = 0; |
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if (copy_from_user(&cmd, useraddr, sizeof(cmd))) |
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return -EFAULT; |
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useraddr += sizeof(cmd); |
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if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) |
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return -EINVAL; |
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|
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if (copy_from_user(features, useraddr, sizeof(features))) |
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return -EFAULT; |
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for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { |
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valid |= (netdev_features_t)features[i].valid << (32 * i); |
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wanted |= (netdev_features_t)features[i].requested << (32 * i); |
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} |
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if (valid & ~NETIF_F_ETHTOOL_BITS) |
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return -EINVAL; |
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if (valid & ~dev->hw_features) { |
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valid &= dev->hw_features; |
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ret |= ETHTOOL_F_UNSUPPORTED; |
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} |
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dev->wanted_features &= ~valid; |
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dev->wanted_features |= wanted & valid; |
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__netdev_update_features(dev); |
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if ((dev->wanted_features ^ dev->features) & valid) |
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ret |= ETHTOOL_F_WISH; |
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return ret; |
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} |
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static int __ethtool_get_sset_count(struct net_device *dev, int sset) |
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{ |
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const struct ethtool_ops *ops = dev->ethtool_ops; |
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|
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if (sset == ETH_SS_FEATURES) |
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return ARRAY_SIZE(netdev_features_strings); |
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if (ops->get_sset_count && ops->get_strings) |
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return ops->get_sset_count(dev, sset); |
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else |
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return -EOPNOTSUPP; |
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} |
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static void __ethtool_get_strings(struct net_device *dev, |
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u32 stringset, u8 *data) |
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{ |
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const struct ethtool_ops *ops = dev->ethtool_ops; |
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if (stringset == ETH_SS_FEATURES) |
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memcpy(data, netdev_features_strings, |
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sizeof(netdev_features_strings)); |
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else |
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/* ops->get_strings is valid because checked earlier */ |
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ops->get_strings(dev, stringset, data); |
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} |
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static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) |
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{ |
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/* feature masks of legacy discrete ethtool ops */ |
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switch (eth_cmd) { |
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case ETHTOOL_GTXCSUM: |
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case ETHTOOL_STXCSUM: |
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return NETIF_F_ALL_CSUM | NETIF_F_SCTP_CSUM; |
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case ETHTOOL_GRXCSUM: |
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case ETHTOOL_SRXCSUM: |
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return NETIF_F_RXCSUM; |
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case ETHTOOL_GSG: |
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case ETHTOOL_SSG: |
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return NETIF_F_SG; |
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case ETHTOOL_GTSO: |
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case ETHTOOL_STSO: |
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return NETIF_F_ALL_TSO; |
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case ETHTOOL_GUFO: |
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case ETHTOOL_SUFO: |
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return NETIF_F_UFO; |
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case ETHTOOL_GGSO: |
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case ETHTOOL_SGSO: |
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return NETIF_F_GSO; |
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case ETHTOOL_GGRO: |
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case ETHTOOL_SGRO: |
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return NETIF_F_GRO; |
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default: |
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BUG(); |
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} |
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} |
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static int ethtool_get_one_feature(struct net_device *dev, |
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char __user *useraddr, u32 ethcmd) |
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{ |
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netdev_features_t mask = ethtool_get_feature_mask(ethcmd); |
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struct ethtool_value edata = { |
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.cmd = ethcmd, |
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.data = !!(dev->features & mask), |
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}; |
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if (copy_to_user(useraddr, &edata, sizeof(edata))) |
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return -EFAULT; |
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return 0; |
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} |
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static int ethtool_set_one_feature(struct net_device *dev, |
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void __user *useraddr, u32 ethcmd) |
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{ |
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struct ethtool_value edata; |
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netdev_features_t mask; |
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if (copy_from_user(&edata, useraddr, sizeof(edata))) |
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return -EFAULT; |
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mask = ethtool_get_feature_mask(ethcmd); |
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mask &= dev->hw_features; |
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if (!mask) |
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return -EOPNOTSUPP; |
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if (edata.data) |
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dev->wanted_features |= mask; |
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else |
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dev->wanted_features &= ~mask; |
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__netdev_update_features(dev); |
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return 0; |
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} |
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#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ |
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ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) |
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#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ |
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NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ |
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NETIF_F_RXHASH) |
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static u32 __ethtool_get_flags(struct net_device *dev) |
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{ |
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u32 flags = 0; |
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if (dev->features & NETIF_F_LRO) |
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flags |= ETH_FLAG_LRO; |
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if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) |
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flags |= ETH_FLAG_RXVLAN; |
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if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) |
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flags |= ETH_FLAG_TXVLAN; |
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if (dev->features & NETIF_F_NTUPLE) |
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flags |= ETH_FLAG_NTUPLE; |
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if (dev->features & NETIF_F_RXHASH) |
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flags |= ETH_FLAG_RXHASH; |
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return flags; |
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} |
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static int __ethtool_set_flags(struct net_device *dev, u32 data) |
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{ |
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netdev_features_t features = 0, changed; |
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if (data & ~ETH_ALL_FLAGS) |
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return -EINVAL; |
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if (data & ETH_FLAG_LRO) |
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features |= NETIF_F_LRO; |
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if (data & ETH_FLAG_RXVLAN) |
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features |= NETIF_F_HW_VLAN_CTAG_RX; |
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if (data & ETH_FLAG_TXVLAN) |
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features |= NETIF_F_HW_VLAN_CTAG_TX; |
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if (data & ETH_FLAG_NTUPLE) |
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features |= NETIF_F_NTUPLE; |
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if (data & ETH_FLAG_RXHASH) |
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features |= NETIF_F_RXHASH; |
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/* allow changing only bits set in hw_features */ |
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changed = (features ^ dev->features) & ETH_ALL_FEATURES; |
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if (changed & ~dev->hw_features) |
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return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; |
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dev->wanted_features = |
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(dev->wanted_features & ~changed) | (features & changed); |
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__netdev_update_features(dev); |
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return 0; |
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} |
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int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
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{ |
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ASSERT_RTNL(); |
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|
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if (!dev->ethtool_ops->get_settings) |
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return -EOPNOTSUPP; |
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memset(cmd, 0, sizeof(struct ethtool_cmd)); |
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cmd->cmd = ETHTOOL_GSET; |
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return dev->ethtool_ops->get_settings(dev, cmd); |
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} |
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EXPORT_SYMBOL(__ethtool_get_settings); |
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static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) |
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{ |
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int err; |
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struct ethtool_cmd cmd; |
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err = __ethtool_get_settings(dev, &cmd); |
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if (err < 0) |
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return err; |
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if (copy_to_user(useraddr, &cmd, sizeof(cmd))) |
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return -EFAULT; |
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return 0; |
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} |
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static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) |
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{ |
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struct ethtool_cmd cmd; |
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if (!dev->ethtool_ops->set_settings) |
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return -EOPNOTSUPP; |
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if (copy_from_user(&cmd, useraddr, sizeof(cmd))) |
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return -EFAULT; |
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return dev->ethtool_ops->set_settings(dev, &cmd); |
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} |
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static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev, |
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void __user *useraddr) |
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{ |
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struct ethtool_drvinfo info; |
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const struct ethtool_ops *ops = dev->ethtool_ops; |
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|
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memset(&info, 0, sizeof(info)); |
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info.cmd = ETHTOOL_GDRVINFO; |
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if (ops->get_drvinfo) { |
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ops->get_drvinfo(dev, &info); |
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} else if (dev->dev.parent && dev->dev.parent->driver) { |
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strlcpy(info.bus_info, dev_name(dev->dev.parent), |
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sizeof(info.bus_info)); |
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strlcpy(info.driver, dev->dev.parent->driver->name, |
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sizeof(info.driver)); |
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} else { |
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return -EOPNOTSUPP; |
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} |
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|
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/* |
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* this method of obtaining string set info is deprecated; |
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* Use ETHTOOL_GSSET_INFO instead. |
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*/ |
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if (ops->get_sset_count) { |
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int rc; |
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|
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rc = ops->get_sset_count(dev, ETH_SS_TEST); |
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if (rc >= 0) |
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info.testinfo_len = rc; |
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rc = ops->get_sset_count(dev, ETH_SS_STATS); |
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if (rc >= 0) |
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info.n_stats = rc; |
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rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); |
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if (rc >= 0) |
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info.n_priv_flags = rc; |
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} |
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if (ops->get_regs_len) |
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info.regdump_len = ops->get_regs_len(dev); |
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if (ops->get_eeprom_len) |
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info.eedump_len = ops->get_eeprom_len(dev); |
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|
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if (copy_to_user(useraddr, &info, sizeof(info))) |
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return -EFAULT; |
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return 0; |
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} |
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|
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static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, |
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void __user *useraddr) |
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{ |
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struct ethtool_sset_info info; |
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u64 sset_mask; |
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int i, idx = 0, n_bits = 0, ret, rc; |
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u32 *info_buf = NULL; |
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|
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if (copy_from_user(&info, useraddr, sizeof(info))) |
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return -EFAULT; |
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|
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/* store copy of mask, because we zero struct later on */ |
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sset_mask = info.sset_mask; |
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if (!sset_mask) |
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return 0; |
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|
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/* calculate size of return buffer */ |
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n_bits = hweight64(sset_mask); |
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|
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memset(&info, 0, sizeof(info)); |
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info.cmd = ETHTOOL_GSSET_INFO; |
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info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER); |
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if (!info_buf) |
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return -ENOMEM; |
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|
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/* |
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* fill return buffer based on input bitmask and successful |
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* get_sset_count return |
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*/ |
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for (i = 0; i < 64; i++) { |
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if (!(sset_mask & (1ULL << i))) |
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continue; |
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|
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rc = __ethtool_get_sset_count(dev, i); |
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if (rc >= 0) { |
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info.sset_mask |= (1ULL << i); |
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info_buf[idx++] = rc; |
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} |
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} |
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|
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ret = -EFAULT; |
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if (copy_to_user(useraddr, &info, sizeof(info))) |
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goto out; |
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useraddr += offsetof(struct ethtool_sset_info, data); |
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if (copy_to_user(useraddr, info_buf, idx * sizeof(u32))) |
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goto out; |
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|
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ret = 0; |
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|
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out: |
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kfree(info_buf); |
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return ret; |
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} |
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static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, |
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u32 cmd, void __user *useraddr) |
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{ |
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struct ethtool_rxnfc info; |
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size_t info_size = sizeof(info); |
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int rc; |
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|
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if (!dev->ethtool_ops->set_rxnfc) |
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return -EOPNOTSUPP; |
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|
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/* struct ethtool_rxnfc was originally defined for |
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* ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data |
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* members. User-space might still be using that |
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* definition. */ |
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if (cmd == ETHTOOL_SRXFH) |
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info_size = (offsetof(struct ethtool_rxnfc, data) + |
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sizeof(info.data)); |
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|
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if (copy_from_user(&info, useraddr, info_size)) |
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return -EFAULT; |
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|
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rc = dev->ethtool_ops->set_rxnfc(dev, &info); |
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if (rc) |
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return rc; |
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|
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if (cmd == ETHTOOL_SRXCLSRLINS && |
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copy_to_user(useraddr, &info, info_size)) |
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return -EFAULT; |
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|
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return 0; |
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} |
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|
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static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, |
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u32 cmd, void __user *useraddr) |
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{ |
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struct ethtool_rxnfc info; |
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size_t info_size = sizeof(info); |
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const struct ethtool_ops *ops = dev->ethtool_ops; |
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int ret; |
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void *rule_buf = NULL; |
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|
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if (!ops->get_rxnfc) |
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return -EOPNOTSUPP; |
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|
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/* struct ethtool_rxnfc was originally defined for |
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* ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data |
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* members. User-space might still be using that |
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* definition. */ |
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if (cmd == ETHTOOL_GRXFH) |
|
info_size = (offsetof(struct ethtool_rxnfc, data) + |
|
sizeof(info.data)); |
|
|
|
if (copy_from_user(&info, useraddr, info_size)) |
|
return -EFAULT; |
|
|
|
if (info.cmd == ETHTOOL_GRXCLSRLALL) { |
|
if (info.rule_cnt > 0) { |
|
if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) |
|
rule_buf = kzalloc(info.rule_cnt * sizeof(u32), |
|
GFP_USER); |
|
if (!rule_buf) |
|
return -ENOMEM; |
|
} |
|
} |
|
|
|
ret = ops->get_rxnfc(dev, &info, rule_buf); |
|
if (ret < 0) |
|
goto err_out; |
|
|
|
ret = -EFAULT; |
|
if (copy_to_user(useraddr, &info, info_size)) |
|
goto err_out; |
|
|
|
if (rule_buf) { |
|
useraddr += offsetof(struct ethtool_rxnfc, rule_locs); |
|
if (copy_to_user(useraddr, rule_buf, |
|
info.rule_cnt * sizeof(u32))) |
|
goto err_out; |
|
} |
|
ret = 0; |
|
|
|
err_out: |
|
kfree(rule_buf); |
|
|
|
return ret; |
|
} |
|
|
|
static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, |
|
struct ethtool_rxnfc *rx_rings, |
|
u32 size) |
|
{ |
|
int i; |
|
|
|
if (copy_from_user(indir, useraddr, size * sizeof(indir[0]))) |
|
return -EFAULT; |
|
|
|
/* Validate ring indices */ |
|
for (i = 0; i < size; i++) |
|
if (indir[i] >= rx_rings->data) |
|
return -EINVAL; |
|
|
|
return 0; |
|
} |
|
|
|
static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
u32 user_size, dev_size; |
|
u32 *indir; |
|
int ret; |
|
|
|
if (!dev->ethtool_ops->get_rxfh_indir_size || |
|
!dev->ethtool_ops->get_rxfh) |
|
return -EOPNOTSUPP; |
|
dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); |
|
if (dev_size == 0) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&user_size, |
|
useraddr + offsetof(struct ethtool_rxfh_indir, size), |
|
sizeof(user_size))) |
|
return -EFAULT; |
|
|
|
if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), |
|
&dev_size, sizeof(dev_size))) |
|
return -EFAULT; |
|
|
|
/* If the user buffer size is 0, this is just a query for the |
|
* device table size. Otherwise, if it's smaller than the |
|
* device table size it's an error. |
|
*/ |
|
if (user_size < dev_size) |
|
return user_size == 0 ? 0 : -EINVAL; |
|
|
|
indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); |
|
if (!indir) |
|
return -ENOMEM; |
|
|
|
ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL); |
|
if (ret) |
|
goto out; |
|
|
|
if (copy_to_user(useraddr + |
|
offsetof(struct ethtool_rxfh_indir, ring_index[0]), |
|
indir, dev_size * sizeof(indir[0]))) |
|
ret = -EFAULT; |
|
|
|
out: |
|
kfree(indir); |
|
return ret; |
|
} |
|
|
|
static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
struct ethtool_rxnfc rx_rings; |
|
u32 user_size, dev_size, i; |
|
u32 *indir; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
int ret; |
|
u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); |
|
|
|
if (!ops->get_rxfh_indir_size || !ops->set_rxfh || |
|
!ops->get_rxnfc) |
|
return -EOPNOTSUPP; |
|
|
|
dev_size = ops->get_rxfh_indir_size(dev); |
|
if (dev_size == 0) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&user_size, |
|
useraddr + offsetof(struct ethtool_rxfh_indir, size), |
|
sizeof(user_size))) |
|
return -EFAULT; |
|
|
|
if (user_size != 0 && user_size != dev_size) |
|
return -EINVAL; |
|
|
|
indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); |
|
if (!indir) |
|
return -ENOMEM; |
|
|
|
rx_rings.cmd = ETHTOOL_GRXRINGS; |
|
ret = ops->get_rxnfc(dev, &rx_rings, NULL); |
|
if (ret) |
|
goto out; |
|
|
|
if (user_size == 0) { |
|
for (i = 0; i < dev_size; i++) |
|
indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); |
|
} else { |
|
ret = ethtool_copy_validate_indir(indir, |
|
useraddr + ringidx_offset, |
|
&rx_rings, |
|
dev_size); |
|
if (ret) |
|
goto out; |
|
} |
|
|
|
ret = ops->set_rxfh(dev, indir, NULL); |
|
|
|
out: |
|
kfree(indir); |
|
return ret; |
|
} |
|
|
|
static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
int ret; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
u32 user_indir_size, user_key_size; |
|
u32 dev_indir_size = 0, dev_key_size = 0; |
|
struct ethtool_rxfh rxfh; |
|
u32 total_size; |
|
u32 indir_bytes; |
|
u32 *indir = NULL; |
|
u8 *hkey = NULL; |
|
u8 *rss_config; |
|
|
|
if (!(dev->ethtool_ops->get_rxfh_indir_size || |
|
dev->ethtool_ops->get_rxfh_key_size) || |
|
!dev->ethtool_ops->get_rxfh) |
|
return -EOPNOTSUPP; |
|
|
|
if (ops->get_rxfh_indir_size) |
|
dev_indir_size = ops->get_rxfh_indir_size(dev); |
|
if (ops->get_rxfh_key_size) |
|
dev_key_size = ops->get_rxfh_key_size(dev); |
|
|
|
if ((dev_key_size + dev_indir_size) == 0) |
|
return -EOPNOTSUPP; |
|
|
|
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.rss_context || rxfh.rsvd[0] || rxfh.rsvd[1]) |
|
return -EINVAL; |
|
|
|
rxfh.indir_size = dev_indir_size; |
|
rxfh.key_size = dev_key_size; |
|
if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) |
|
return -EFAULT; |
|
|
|
/* If the user buffer size is 0, this is just a query for the |
|
* device table size and key size. Otherwise, if the User size is |
|
* not equal to device table size or key size it's an error. |
|
*/ |
|
if (!user_indir_size && !user_key_size) |
|
return 0; |
|
|
|
if ((user_indir_size && (user_indir_size != dev_indir_size)) || |
|
(user_key_size && (user_key_size != dev_key_size))) |
|
return -EINVAL; |
|
|
|
indir_bytes = user_indir_size * sizeof(indir[0]); |
|
total_size = indir_bytes + user_key_size; |
|
rss_config = kzalloc(total_size, GFP_USER); |
|
if (!rss_config) |
|
return -ENOMEM; |
|
|
|
if (user_indir_size) |
|
indir = (u32 *)rss_config; |
|
|
|
if (user_key_size) |
|
hkey = rss_config + indir_bytes; |
|
|
|
ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey); |
|
if (!ret) { |
|
if (copy_to_user(useraddr + |
|
offsetof(struct ethtool_rxfh, rss_config[0]), |
|
rss_config, total_size)) |
|
ret = -EFAULT; |
|
} |
|
|
|
kfree(rss_config); |
|
|
|
return ret; |
|
} |
|
|
|
static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
int ret; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
struct ethtool_rxnfc rx_rings; |
|
struct ethtool_rxfh rxfh; |
|
u32 dev_indir_size = 0, dev_key_size = 0, i; |
|
u32 *indir = NULL, indir_bytes = 0; |
|
u8 *hkey = NULL; |
|
u8 *rss_config; |
|
u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); |
|
|
|
if (!(ops->get_rxfh_indir_size || ops->get_rxfh_key_size) || |
|
!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 = dev->ethtool_ops->get_rxfh_key_size(dev); |
|
if ((dev_key_size + dev_indir_size) == 0) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
|
return -EFAULT; |
|
|
|
/* Check that reserved fields are 0 for now */ |
|
if (rxfh.rss_context || rxfh.rsvd[0] || rxfh.rsvd[1]) |
|
return -EINVAL; |
|
|
|
/* If either indir or hash key is valid, proceed further. |
|
* It is not valid to request that both be unchanged. |
|
*/ |
|
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)) |
|
return -EINVAL; |
|
|
|
if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) |
|
indir_bytes = dev_indir_size * sizeof(indir[0]); |
|
|
|
rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); |
|
if (!rss_config) |
|
return -ENOMEM; |
|
|
|
rx_rings.cmd = ETHTOOL_GRXRINGS; |
|
ret = ops->get_rxnfc(dev, &rx_rings, NULL); |
|
if (ret) |
|
goto out; |
|
|
|
/* rxfh.indir_size == 0 means reset the indir table to default. |
|
* rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. |
|
*/ |
|
if (rxfh.indir_size && |
|
rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { |
|
indir = (u32 *)rss_config; |
|
ret = ethtool_copy_validate_indir(indir, |
|
useraddr + rss_cfg_offset, |
|
&rx_rings, |
|
rxfh.indir_size); |
|
if (ret) |
|
goto out; |
|
} else if (rxfh.indir_size == 0) { |
|
indir = (u32 *)rss_config; |
|
for (i = 0; i < dev_indir_size; i++) |
|
indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); |
|
} |
|
|
|
if (rxfh.key_size) { |
|
hkey = rss_config + indir_bytes; |
|
if (copy_from_user(hkey, |
|
useraddr + rss_cfg_offset + indir_bytes, |
|
rxfh.key_size)) { |
|
ret = -EFAULT; |
|
goto out; |
|
} |
|
} |
|
|
|
ret = ops->set_rxfh(dev, indir, hkey); |
|
|
|
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 (regs.len > reglen) |
|
regs.len = reglen; |
|
|
|
regbuf = vzalloc(reglen); |
|
if (reglen && !regbuf) |
|
return -ENOMEM; |
|
|
|
ops->get_regs(dev, ®s, regbuf); |
|
|
|
ret = -EFAULT; |
|
if (copy_to_user(useraddr, ®s, sizeof(regs))) |
|
goto out; |
|
useraddr += offsetof(struct ethtool_regs, data); |
|
if (regbuf && copy_to_user(useraddr, regbuf, regs.len)) |
|
goto out; |
|
ret = 0; |
|
|
|
out: |
|
vfree(regbuf); |
|
return ret; |
|
} |
|
|
|
static int ethtool_reset(struct net_device *dev, char __user *useraddr) |
|
{ |
|
struct ethtool_value reset; |
|
int ret; |
|
|
|
if (!dev->ethtool_ops->reset) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&reset, useraddr, sizeof(reset))) |
|
return -EFAULT; |
|
|
|
ret = dev->ethtool_ops->reset(dev, &reset.data); |
|
if (ret) |
|
return ret; |
|
|
|
if (copy_to_user(useraddr, &reset, sizeof(reset))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) |
|
{ |
|
struct ethtool_wolinfo wol; |
|
|
|
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; |
|
|
|
if (!dev->ethtool_ops->set_wol) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&wol, useraddr, sizeof(wol))) |
|
return -EFAULT; |
|
|
|
return dev->ethtool_ops->set_wol(dev, &wol); |
|
} |
|
|
|
static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) |
|
{ |
|
struct ethtool_eee edata; |
|
int rc; |
|
|
|
if (!dev->ethtool_ops->get_eee) |
|
return -EOPNOTSUPP; |
|
|
|
memset(&edata, 0, sizeof(struct ethtool_eee)); |
|
edata.cmd = ETHTOOL_GEEE; |
|
rc = dev->ethtool_ops->get_eee(dev, &edata); |
|
|
|
if (rc) |
|
return rc; |
|
|
|
if (copy_to_user(useraddr, &edata, sizeof(edata))) |
|
return -EFAULT; |
|
|
|
return 0; |
|
} |
|
|
|
static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) |
|
{ |
|
struct ethtool_eee edata; |
|
|
|
if (!dev->ethtool_ops->set_eee) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&edata, useraddr, sizeof(edata))) |
|
return -EFAULT; |
|
|
|
return dev->ethtool_ops->set_eee(dev, &edata); |
|
} |
|
|
|
static int ethtool_nway_reset(struct net_device *dev) |
|
{ |
|
if (!dev->ethtool_ops->nway_reset) |
|
return -EOPNOTSUPP; |
|
|
|
return dev->ethtool_ops->nway_reset(dev); |
|
} |
|
|
|
static int ethtool_get_link(struct net_device *dev, char __user *useraddr) |
|
{ |
|
struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; |
|
|
|
if (!dev->ethtool_ops->get_link) |
|
return -EOPNOTSUPP; |
|
|
|
edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev); |
|
|
|
if (copy_to_user(useraddr, &edata, sizeof(edata))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, |
|
int (*getter)(struct net_device *, |
|
struct ethtool_eeprom *, u8 *), |
|
u32 total_len) |
|
{ |
|
struct ethtool_eeprom eeprom; |
|
void __user *userbuf = useraddr + sizeof(eeprom); |
|
u32 bytes_remaining; |
|
u8 *data; |
|
int ret = 0; |
|
|
|
if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) |
|
return -EFAULT; |
|
|
|
/* Check for wrap and zero */ |
|
if (eeprom.offset + eeprom.len <= eeprom.offset) |
|
return -EINVAL; |
|
|
|
/* Check for exceeding total eeprom len */ |
|
if (eeprom.offset + eeprom.len > total_len) |
|
return -EINVAL; |
|
|
|
data = kmalloc(PAGE_SIZE, GFP_USER); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
bytes_remaining = eeprom.len; |
|
while (bytes_remaining > 0) { |
|
eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); |
|
|
|
ret = getter(dev, &eeprom, data); |
|
if (ret) |
|
break; |
|
if (copy_to_user(userbuf, data, eeprom.len)) { |
|
ret = -EFAULT; |
|
break; |
|
} |
|
userbuf += eeprom.len; |
|
eeprom.offset += eeprom.len; |
|
bytes_remaining -= eeprom.len; |
|
} |
|
|
|
eeprom.len = userbuf - (useraddr + sizeof(eeprom)); |
|
eeprom.offset -= eeprom.len; |
|
if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) |
|
ret = -EFAULT; |
|
|
|
kfree(data); |
|
return ret; |
|
} |
|
|
|
static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) |
|
{ |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
|
|
if (!ops->get_eeprom || !ops->get_eeprom_len || |
|
!ops->get_eeprom_len(dev)) |
|
return -EOPNOTSUPP; |
|
|
|
return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, |
|
ops->get_eeprom_len(dev)); |
|
} |
|
|
|
static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) |
|
{ |
|
struct ethtool_eeprom eeprom; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
void __user *userbuf = useraddr + sizeof(eeprom); |
|
u32 bytes_remaining; |
|
u8 *data; |
|
int ret = 0; |
|
|
|
if (!ops->set_eeprom || !ops->get_eeprom_len || |
|
!ops->get_eeprom_len(dev)) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) |
|
return -EFAULT; |
|
|
|
/* Check for wrap and zero */ |
|
if (eeprom.offset + eeprom.len <= eeprom.offset) |
|
return -EINVAL; |
|
|
|
/* Check for exceeding total eeprom len */ |
|
if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) |
|
return -EINVAL; |
|
|
|
data = kmalloc(PAGE_SIZE, GFP_USER); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
bytes_remaining = eeprom.len; |
|
while (bytes_remaining > 0) { |
|
eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); |
|
|
|
if (copy_from_user(data, userbuf, eeprom.len)) { |
|
ret = -EFAULT; |
|
break; |
|
} |
|
ret = ops->set_eeprom(dev, &eeprom, data); |
|
if (ret) |
|
break; |
|
userbuf += eeprom.len; |
|
eeprom.offset += eeprom.len; |
|
bytes_remaining -= eeprom.len; |
|
} |
|
|
|
kfree(data); |
|
return ret; |
|
} |
|
|
|
static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; |
|
|
|
if (!dev->ethtool_ops->get_coalesce) |
|
return -EOPNOTSUPP; |
|
|
|
dev->ethtool_ops->get_coalesce(dev, &coalesce); |
|
|
|
if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
struct ethtool_coalesce coalesce; |
|
|
|
if (!dev->ethtool_ops->set_coalesce) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) |
|
return -EFAULT; |
|
|
|
return dev->ethtool_ops->set_coalesce(dev, &coalesce); |
|
} |
|
|
|
static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) |
|
{ |
|
struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; |
|
|
|
if (!dev->ethtool_ops->get_ringparam) |
|
return -EOPNOTSUPP; |
|
|
|
dev->ethtool_ops->get_ringparam(dev, &ringparam); |
|
|
|
if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) |
|
{ |
|
struct ethtool_ringparam ringparam; |
|
|
|
if (!dev->ethtool_ops->set_ringparam) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) |
|
return -EFAULT; |
|
|
|
return dev->ethtool_ops->set_ringparam(dev, &ringparam); |
|
} |
|
|
|
static noinline_for_stack int ethtool_get_channels(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; |
|
|
|
if (!dev->ethtool_ops->get_channels) |
|
return -EOPNOTSUPP; |
|
|
|
dev->ethtool_ops->get_channels(dev, &channels); |
|
|
|
if (copy_to_user(useraddr, &channels, sizeof(channels))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static noinline_for_stack int ethtool_set_channels(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
struct ethtool_channels channels; |
|
|
|
if (!dev->ethtool_ops->set_channels) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&channels, useraddr, sizeof(channels))) |
|
return -EFAULT; |
|
|
|
return dev->ethtool_ops->set_channels(dev, &channels); |
|
} |
|
|
|
static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) |
|
{ |
|
struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM }; |
|
|
|
if (!dev->ethtool_ops->get_pauseparam) |
|
return -EOPNOTSUPP; |
|
|
|
dev->ethtool_ops->get_pauseparam(dev, &pauseparam); |
|
|
|
if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) |
|
{ |
|
struct ethtool_pauseparam pauseparam; |
|
|
|
if (!dev->ethtool_ops->set_pauseparam) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) |
|
return -EFAULT; |
|
|
|
return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); |
|
} |
|
|
|
static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
|
{ |
|
struct ethtool_test test; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
u64 *data; |
|
int ret, test_len; |
|
|
|
if (!ops->self_test || !ops->get_sset_count) |
|
return -EOPNOTSUPP; |
|
|
|
test_len = ops->get_sset_count(dev, ETH_SS_TEST); |
|
if (test_len < 0) |
|
return test_len; |
|
WARN_ON(test_len == 0); |
|
|
|
if (copy_from_user(&test, useraddr, sizeof(test))) |
|
return -EFAULT; |
|
|
|
test.len = test_len; |
|
data = kmalloc(test_len * sizeof(u64), GFP_USER); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
ops->self_test(dev, &test, data); |
|
|
|
ret = -EFAULT; |
|
if (copy_to_user(useraddr, &test, sizeof(test))) |
|
goto out; |
|
useraddr += sizeof(test); |
|
if (copy_to_user(useraddr, data, test.len * sizeof(u64))) |
|
goto out; |
|
ret = 0; |
|
|
|
out: |
|
kfree(data); |
|
return ret; |
|
} |
|
|
|
static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) |
|
{ |
|
struct ethtool_gstrings gstrings; |
|
u8 *data; |
|
int ret; |
|
|
|
if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) |
|
return -EFAULT; |
|
|
|
ret = __ethtool_get_sset_count(dev, gstrings.string_set); |
|
if (ret < 0) |
|
return ret; |
|
|
|
gstrings.len = ret; |
|
|
|
data = kcalloc(gstrings.len, ETH_GSTRING_LEN, GFP_USER); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
__ethtool_get_strings(dev, gstrings.string_set, data); |
|
|
|
ret = -EFAULT; |
|
if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) |
|
goto out; |
|
useraddr += sizeof(gstrings); |
|
if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) |
|
goto out; |
|
ret = 0; |
|
|
|
out: |
|
kfree(data); |
|
return ret; |
|
} |
|
|
|
static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) |
|
{ |
|
struct ethtool_value id; |
|
static bool busy; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
int rc; |
|
|
|
if (!ops->set_phys_id) |
|
return -EOPNOTSUPP; |
|
|
|
if (busy) |
|
return -EBUSY; |
|
|
|
if (copy_from_user(&id, useraddr, sizeof(id))) |
|
return -EFAULT; |
|
|
|
rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); |
|
if (rc < 0) |
|
return rc; |
|
|
|
/* Drop the RTNL lock while waiting, but prevent reentry or |
|
* removal of the device. |
|
*/ |
|
busy = true; |
|
dev_hold(dev); |
|
rtnl_unlock(); |
|
|
|
if (rc == 0) { |
|
/* Driver will handle this itself */ |
|
schedule_timeout_interruptible( |
|
id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); |
|
} else { |
|
/* Driver expects to be called at twice the frequency in rc */ |
|
int n = rc * 2, i, interval = HZ / n; |
|
|
|
/* Count down seconds */ |
|
do { |
|
/* Count down iterations per second */ |
|
i = n; |
|
do { |
|
rtnl_lock(); |
|
rc = ops->set_phys_id(dev, |
|
(i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); |
|
rtnl_unlock(); |
|
if (rc) |
|
break; |
|
schedule_timeout_interruptible(interval); |
|
} while (!signal_pending(current) && --i != 0); |
|
} while (!signal_pending(current) && |
|
(id.data == 0 || --id.data != 0)); |
|
} |
|
|
|
rtnl_lock(); |
|
dev_put(dev); |
|
busy = false; |
|
|
|
(void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); |
|
return rc; |
|
} |
|
|
|
static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) |
|
{ |
|
struct ethtool_stats stats; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
u64 *data; |
|
int ret, n_stats; |
|
|
|
if (!ops->get_ethtool_stats || !ops->get_sset_count) |
|
return -EOPNOTSUPP; |
|
|
|
n_stats = ops->get_sset_count(dev, ETH_SS_STATS); |
|
if (n_stats < 0) |
|
return n_stats; |
|
WARN_ON(n_stats == 0); |
|
|
|
if (copy_from_user(&stats, useraddr, sizeof(stats))) |
|
return -EFAULT; |
|
|
|
stats.n_stats = n_stats; |
|
data = kmalloc(n_stats * sizeof(u64), GFP_USER); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
ops->get_ethtool_stats(dev, &stats, data); |
|
|
|
ret = -EFAULT; |
|
if (copy_to_user(useraddr, &stats, sizeof(stats))) |
|
goto out; |
|
useraddr += sizeof(stats); |
|
if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) |
|
goto out; |
|
ret = 0; |
|
|
|
out: |
|
kfree(data); |
|
return ret; |
|
} |
|
|
|
static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
|
{ |
|
struct ethtool_perm_addr epaddr; |
|
|
|
if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
|
return -EFAULT; |
|
|
|
if (epaddr.size < dev->addr_len) |
|
return -ETOOSMALL; |
|
epaddr.size = dev->addr_len; |
|
|
|
if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
|
return -EFAULT; |
|
useraddr += sizeof(epaddr); |
|
if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
|
u32 cmd, u32 (*actor)(struct net_device *)) |
|
{ |
|
struct ethtool_value edata = { .cmd = cmd }; |
|
|
|
if (!actor) |
|
return -EOPNOTSUPP; |
|
|
|
edata.data = actor(dev); |
|
|
|
if (copy_to_user(useraddr, &edata, sizeof(edata))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
|
void (*actor)(struct net_device *, u32)) |
|
{ |
|
struct ethtool_value edata; |
|
|
|
if (!actor) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&edata, useraddr, sizeof(edata))) |
|
return -EFAULT; |
|
|
|
actor(dev, edata.data); |
|
return 0; |
|
} |
|
|
|
static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
|
int (*actor)(struct net_device *, u32)) |
|
{ |
|
struct ethtool_value edata; |
|
|
|
if (!actor) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&edata, useraddr, sizeof(edata))) |
|
return -EFAULT; |
|
|
|
return actor(dev, edata.data); |
|
} |
|
|
|
static noinline_for_stack int ethtool_flash_device(struct net_device *dev, |
|
char __user *useraddr) |
|
{ |
|
struct ethtool_flash efl; |
|
|
|
if (copy_from_user(&efl, useraddr, sizeof(efl))) |
|
return -EFAULT; |
|
|
|
if (!dev->ethtool_ops->flash_device) |
|
return -EOPNOTSUPP; |
|
|
|
efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; |
|
|
|
return dev->ethtool_ops->flash_device(dev, &efl); |
|
} |
|
|
|
static int ethtool_set_dump(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
struct ethtool_dump dump; |
|
|
|
if (!dev->ethtool_ops->set_dump) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&dump, useraddr, sizeof(dump))) |
|
return -EFAULT; |
|
|
|
return dev->ethtool_ops->set_dump(dev, &dump); |
|
} |
|
|
|
static int ethtool_get_dump_flag(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
int ret; |
|
struct ethtool_dump dump; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
|
|
if (!ops->get_dump_flag) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&dump, useraddr, sizeof(dump))) |
|
return -EFAULT; |
|
|
|
ret = ops->get_dump_flag(dev, &dump); |
|
if (ret) |
|
return ret; |
|
|
|
if (copy_to_user(useraddr, &dump, sizeof(dump))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static int ethtool_get_dump_data(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
int ret; |
|
__u32 len; |
|
struct ethtool_dump dump, tmp; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
void *data = NULL; |
|
|
|
if (!ops->get_dump_data || !ops->get_dump_flag) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&dump, useraddr, sizeof(dump))) |
|
return -EFAULT; |
|
|
|
memset(&tmp, 0, sizeof(tmp)); |
|
tmp.cmd = ETHTOOL_GET_DUMP_FLAG; |
|
ret = ops->get_dump_flag(dev, &tmp); |
|
if (ret) |
|
return ret; |
|
|
|
len = min(tmp.len, dump.len); |
|
if (!len) |
|
return -EFAULT; |
|
|
|
/* Don't ever let the driver think there's more space available |
|
* than it requested with .get_dump_flag(). |
|
*/ |
|
dump.len = len; |
|
|
|
/* Always allocate enough space to hold the whole thing so that the |
|
* driver does not need to check the length and bother with partial |
|
* dumping. |
|
*/ |
|
data = vzalloc(tmp.len); |
|
if (!data) |
|
return -ENOMEM; |
|
ret = ops->get_dump_data(dev, &dump, data); |
|
if (ret) |
|
goto out; |
|
|
|
/* There are two sane possibilities: |
|
* 1. The driver's .get_dump_data() does not touch dump.len. |
|
* 2. Or it may set dump.len to how much it really writes, which |
|
* should be tmp.len (or len if it can do a partial dump). |
|
* In any case respond to userspace with the actual length of data |
|
* it's receiving. |
|
*/ |
|
WARN_ON(dump.len != len && dump.len != tmp.len); |
|
dump.len = len; |
|
|
|
if (copy_to_user(useraddr, &dump, sizeof(dump))) { |
|
ret = -EFAULT; |
|
goto out; |
|
} |
|
useraddr += offsetof(struct ethtool_dump, data); |
|
if (copy_to_user(useraddr, data, len)) |
|
ret = -EFAULT; |
|
out: |
|
vfree(data); |
|
return ret; |
|
} |
|
|
|
static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) |
|
{ |
|
int err = 0; |
|
struct ethtool_ts_info info; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
struct phy_device *phydev = dev->phydev; |
|
|
|
memset(&info, 0, sizeof(info)); |
|
info.cmd = ETHTOOL_GET_TS_INFO; |
|
|
|
if (phydev && phydev->drv && phydev->drv->ts_info) { |
|
err = phydev->drv->ts_info(phydev, &info); |
|
} else if (ops->get_ts_info) { |
|
err = ops->get_ts_info(dev, &info); |
|
} else { |
|
info.so_timestamping = |
|
SOF_TIMESTAMPING_RX_SOFTWARE | |
|
SOF_TIMESTAMPING_SOFTWARE; |
|
info.phc_index = -1; |
|
} |
|
|
|
if (err) |
|
return err; |
|
|
|
if (copy_to_user(useraddr, &info, sizeof(info))) |
|
err = -EFAULT; |
|
|
|
return err; |
|
} |
|
|
|
static int ethtool_get_module_info(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
int ret; |
|
struct ethtool_modinfo modinfo; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
|
|
if (!ops->get_module_info) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) |
|
return -EFAULT; |
|
|
|
ret = ops->get_module_info(dev, &modinfo); |
|
if (ret) |
|
return ret; |
|
|
|
if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) |
|
return -EFAULT; |
|
|
|
return 0; |
|
} |
|
|
|
static int ethtool_get_module_eeprom(struct net_device *dev, |
|
void __user *useraddr) |
|
{ |
|
int ret; |
|
struct ethtool_modinfo modinfo; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
|
|
if (!ops->get_module_info || !ops->get_module_eeprom) |
|
return -EOPNOTSUPP; |
|
|
|
ret = ops->get_module_info(dev, &modinfo); |
|
if (ret) |
|
return ret; |
|
|
|
return ethtool_get_any_eeprom(dev, useraddr, ops->get_module_eeprom, |
|
modinfo.eeprom_len); |
|
} |
|
|
|
static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) |
|
{ |
|
switch (tuna->id) { |
|
case ETHTOOL_RX_COPYBREAK: |
|
case ETHTOOL_TX_COPYBREAK: |
|
if (tuna->len != sizeof(u32) || |
|
tuna->type_id != ETHTOOL_TUNABLE_U32) |
|
return -EINVAL; |
|
break; |
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) |
|
{ |
|
int ret; |
|
struct ethtool_tunable tuna; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
void *data; |
|
|
|
if (!ops->get_tunable) |
|
return -EOPNOTSUPP; |
|
if (copy_from_user(&tuna, useraddr, sizeof(tuna))) |
|
return -EFAULT; |
|
ret = ethtool_tunable_valid(&tuna); |
|
if (ret) |
|
return ret; |
|
data = kmalloc(tuna.len, GFP_USER); |
|
if (!data) |
|
return -ENOMEM; |
|
ret = ops->get_tunable(dev, &tuna, data); |
|
if (ret) |
|
goto out; |
|
useraddr += sizeof(tuna); |
|
ret = -EFAULT; |
|
if (copy_to_user(useraddr, data, tuna.len)) |
|
goto out; |
|
ret = 0; |
|
|
|
out: |
|
kfree(data); |
|
return ret; |
|
} |
|
|
|
static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) |
|
{ |
|
int ret; |
|
struct ethtool_tunable tuna; |
|
const struct ethtool_ops *ops = dev->ethtool_ops; |
|
void *data; |
|
|
|
if (!ops->set_tunable) |
|
return -EOPNOTSUPP; |
|
if (copy_from_user(&tuna, useraddr, sizeof(tuna))) |
|
return -EFAULT; |
|
ret = ethtool_tunable_valid(&tuna); |
|
if (ret) |
|
return ret; |
|
data = kmalloc(tuna.len, GFP_USER); |
|
if (!data) |
|
return -ENOMEM; |
|
useraddr += sizeof(tuna); |
|
ret = -EFAULT; |
|
if (copy_from_user(data, useraddr, tuna.len)) |
|
goto out; |
|
ret = ops->set_tunable(dev, &tuna, data); |
|
|
|
out: |
|
kfree(data); |
|
return ret; |
|
} |
|
|
|
/* The main entry point in this file. Called from net/core/dev_ioctl.c */ |
|
|
|
int dev_ethtool(struct net *net, struct ifreq *ifr) |
|
{ |
|
struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); |
|
void __user *useraddr = ifr->ifr_data; |
|
u32 ethcmd; |
|
int rc; |
|
netdev_features_t old_features; |
|
|
|
if (!dev || !netif_device_present(dev)) |
|
return -ENODEV; |
|
|
|
if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) |
|
return -EFAULT; |
|
|
|
/* Allow some commands to be done by anyone */ |
|
switch (ethcmd) { |
|
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_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: |
|
break; |
|
default: |
|
if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
|
return -EPERM; |
|
} |
|
|
|
if (dev->ethtool_ops->begin) { |
|
rc = dev->ethtool_ops->begin(dev); |
|
if (rc < 0) |
|
return rc; |
|
} |
|
old_features = dev->features; |
|
|
|
switch (ethcmd) { |
|
case ETHTOOL_GSET: |
|
rc = ethtool_get_settings(dev, useraddr); |
|
break; |
|
case ETHTOOL_SSET: |
|
rc = ethtool_set_settings(dev, useraddr); |
|
break; |
|
case ETHTOOL_GDRVINFO: |
|
rc = ethtool_get_drvinfo(dev, useraddr); |
|
break; |
|
case ETHTOOL_GREGS: |
|
rc = ethtool_get_regs(dev, useraddr); |
|
break; |
|
case ETHTOOL_GWOL: |
|
rc = ethtool_get_wol(dev, useraddr); |
|
break; |
|
case ETHTOOL_SWOL: |
|
rc = ethtool_set_wol(dev, useraddr); |
|
break; |
|
case ETHTOOL_GMSGLVL: |
|
rc = ethtool_get_value(dev, useraddr, ethcmd, |
|
dev->ethtool_ops->get_msglevel); |
|
break; |
|
case ETHTOOL_SMSGLVL: |
|
rc = ethtool_set_value_void(dev, useraddr, |
|
dev->ethtool_ops->set_msglevel); |
|
break; |
|
case ETHTOOL_GEEE: |
|
rc = ethtool_get_eee(dev, useraddr); |
|
break; |
|
case ETHTOOL_SEEE: |
|
rc = ethtool_set_eee(dev, useraddr); |
|
break; |
|
case ETHTOOL_NWAY_RST: |
|
rc = ethtool_nway_reset(dev); |
|
break; |
|
case ETHTOOL_GLINK: |
|
rc = ethtool_get_link(dev, useraddr); |
|
break; |
|
case ETHTOOL_GEEPROM: |
|
rc = ethtool_get_eeprom(dev, useraddr); |
|
break; |
|
case ETHTOOL_SEEPROM: |
|
rc = ethtool_set_eeprom(dev, useraddr); |
|
break; |
|
case ETHTOOL_GCOALESCE: |
|
rc = ethtool_get_coalesce(dev, useraddr); |
|
break; |
|
case ETHTOOL_SCOALESCE: |
|
rc = ethtool_set_coalesce(dev, useraddr); |
|
break; |
|
case ETHTOOL_GRINGPARAM: |
|
rc = ethtool_get_ringparam(dev, useraddr); |
|
break; |
|
case ETHTOOL_SRINGPARAM: |
|
rc = ethtool_set_ringparam(dev, useraddr); |
|
break; |
|
case ETHTOOL_GPAUSEPARAM: |
|
rc = ethtool_get_pauseparam(dev, useraddr); |
|
break; |
|
case ETHTOOL_SPAUSEPARAM: |
|
rc = ethtool_set_pauseparam(dev, useraddr); |
|
break; |
|
case ETHTOOL_TEST: |
|
rc = ethtool_self_test(dev, useraddr); |
|
break; |
|
case ETHTOOL_GSTRINGS: |
|
rc = ethtool_get_strings(dev, useraddr); |
|
break; |
|
case ETHTOOL_PHYS_ID: |
|
rc = ethtool_phys_id(dev, useraddr); |
|
break; |
|
case ETHTOOL_GSTATS: |
|
rc = ethtool_get_stats(dev, useraddr); |
|
break; |
|
case ETHTOOL_GPERMADDR: |
|
rc = ethtool_get_perm_addr(dev, useraddr); |
|
break; |
|
case ETHTOOL_GFLAGS: |
|
rc = ethtool_get_value(dev, useraddr, ethcmd, |
|
__ethtool_get_flags); |
|
break; |
|
case ETHTOOL_SFLAGS: |
|
rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); |
|
break; |
|
case ETHTOOL_GPFLAGS: |
|
rc = ethtool_get_value(dev, useraddr, ethcmd, |
|
dev->ethtool_ops->get_priv_flags); |
|
break; |
|
case ETHTOOL_SPFLAGS: |
|
rc = ethtool_set_value(dev, useraddr, |
|
dev->ethtool_ops->set_priv_flags); |
|
break; |
|
case ETHTOOL_GRXFH: |
|
case ETHTOOL_GRXRINGS: |
|
case ETHTOOL_GRXCLSRLCNT: |
|
case ETHTOOL_GRXCLSRULE: |
|
case ETHTOOL_GRXCLSRLALL: |
|
rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); |
|
break; |
|
case ETHTOOL_SRXFH: |
|
case ETHTOOL_SRXCLSRLDEL: |
|
case ETHTOOL_SRXCLSRLINS: |
|
rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); |
|
break; |
|
case ETHTOOL_FLASHDEV: |
|
rc = ethtool_flash_device(dev, useraddr); |
|
break; |
|
case ETHTOOL_RESET: |
|
rc = ethtool_reset(dev, useraddr); |
|
break; |
|
case ETHTOOL_GSSET_INFO: |
|
rc = ethtool_get_sset_info(dev, useraddr); |
|
break; |
|
case ETHTOOL_GRXFHINDIR: |
|
rc = ethtool_get_rxfh_indir(dev, useraddr); |
|
break; |
|
case ETHTOOL_SRXFHINDIR: |
|
rc = ethtool_set_rxfh_indir(dev, useraddr); |
|
break; |
|
case ETHTOOL_GRSSH: |
|
rc = ethtool_get_rxfh(dev, useraddr); |
|
break; |
|
case ETHTOOL_SRSSH: |
|
rc = ethtool_set_rxfh(dev, useraddr); |
|
break; |
|
case ETHTOOL_GFEATURES: |
|
rc = ethtool_get_features(dev, useraddr); |
|
break; |
|
case ETHTOOL_SFEATURES: |
|
rc = ethtool_set_features(dev, useraddr); |
|
break; |
|
case ETHTOOL_GTXCSUM: |
|
case ETHTOOL_GRXCSUM: |
|
case ETHTOOL_GSG: |
|
case ETHTOOL_GTSO: |
|
case ETHTOOL_GUFO: |
|
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_SUFO: |
|
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; |
|
default: |
|
rc = -EOPNOTSUPP; |
|
} |
|
|
|
if (dev->ethtool_ops->complete) |
|
dev->ethtool_ops->complete(dev); |
|
|
|
if (old_features != dev->features) |
|
netdev_features_change(dev); |
|
|
|
return rc; |
|
}
|
|
|