mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 21:24:00 +08:00
8a73125c36
Applied fixes suggested by checkpatch.pl. Signed-off-by: Dragos Foianu <dragos.foianu@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1687 lines
40 KiB
C
1687 lines
40 KiB
C
/*
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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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#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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* 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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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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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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/* Handlers for each ethtool command */
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#define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
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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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[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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[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_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
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[NETIF_F_GSO_MPLS_BIT] = "tx-mpls-segmentation",
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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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};
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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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/* 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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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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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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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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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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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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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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if (copy_from_user(&info, useraddr, sizeof(info)))
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return -EFAULT;
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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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/* calculate size of return buffer */
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n_bits = hweight64(sset_mask);
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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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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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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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ret = 0;
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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,
|
|
u32 cmd, void __user *useraddr)
|
|
{
|
|
struct ethtool_rxnfc info;
|
|
size_t info_size = sizeof(info);
|
|
int rc;
|
|
|
|
if (!dev->ethtool_ops->set_rxnfc)
|
|
return -EOPNOTSUPP;
|
|
|
|
/* struct ethtool_rxnfc was originally defined for
|
|
* ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
|
|
* members. User-space might still be using that
|
|
* definition. */
|
|
if (cmd == ETHTOOL_SRXFH)
|
|
info_size = (offsetof(struct ethtool_rxnfc, data) +
|
|
sizeof(info.data));
|
|
|
|
if (copy_from_user(&info, useraddr, info_size))
|
|
return -EFAULT;
|
|
|
|
rc = dev->ethtool_ops->set_rxnfc(dev, &info);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (cmd == ETHTOOL_SRXCLSRLINS &&
|
|
copy_to_user(useraddr, &info, info_size))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
|
|
u32 cmd, void __user *useraddr)
|
|
{
|
|
struct ethtool_rxnfc info;
|
|
size_t info_size = sizeof(info);
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
int ret;
|
|
void *rule_buf = NULL;
|
|
|
|
if (!ops->get_rxnfc)
|
|
return -EOPNOTSUPP;
|
|
|
|
/* struct ethtool_rxnfc was originally defined for
|
|
* ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
|
|
* members. User-space might still be using that
|
|
* definition. */
|
|
if (cmd == ETHTOOL_GRXFH)
|
|
info_size = (offsetof(struct ethtool_rxnfc, data) +
|
|
sizeof(info.data));
|
|
|
|
if (copy_from_user(&info, useraddr, info_size))
|
|
return -EFAULT;
|
|
|
|
if (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 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_indir)
|
|
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_indir(dev, indir);
|
|
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;
|
|
|
|
if (!ops->get_rxfh_indir_size || !ops->set_rxfh_indir ||
|
|
!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 {
|
|
if (copy_from_user(indir,
|
|
useraddr +
|
|
offsetof(struct ethtool_rxfh_indir,
|
|
ring_index[0]),
|
|
dev_size * sizeof(indir[0]))) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
/* Validate ring indices */
|
|
for (i = 0; i < dev_size; i++) {
|
|
if (indir[i] >= rx_rings.data) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
ret = ops->set_rxfh_indir(dev, indir);
|
|
|
|
out:
|
|
kfree(indir);
|
|
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 = { .cmd = ETHTOOL_GWOL };
|
|
|
|
if (!dev->ethtool_ops->get_wol)
|
|
return -EOPNOTSUPP;
|
|
|
|
dev->ethtool_ops->get_wol(dev, &wol);
|
|
|
|
if (copy_to_user(useraddr, &wol, sizeof(wol)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
|
|
{
|
|
struct ethtool_wolinfo wol;
|
|
|
|
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)
|
|
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)
|
|
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 = kmalloc(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);
|
|
}
|
|
|
|
/* 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_GFEATURES:
|
|
case ETHTOOL_GCHANNELS:
|
|
case ETHTOOL_GET_TS_INFO:
|
|
case ETHTOOL_GEEE:
|
|
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_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;
|
|
default:
|
|
rc = -EOPNOTSUPP;
|
|
}
|
|
|
|
if (dev->ethtool_ops->complete)
|
|
dev->ethtool_ops->complete(dev);
|
|
|
|
if (old_features != dev->features)
|
|
netdev_features_change(dev);
|
|
|
|
return rc;
|
|
}
|