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ethtool.c
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/*
* net/core/ethtool.c - Ethtool ioctl handler
* Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
*
* This file is where we call all the ethtool_ops commands to get
* the information ethtool needs.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/capability.h>
#include <linux/errno.h>
#include <linux/ethtool.h>
#include <linux/netdevice.h>
#include <asm/uaccess.h>
/*
* Some useful ethtool_ops methods that're device independent.
* If we find that all drivers want to do the same thing here,
* we can turn these into dev_() function calls.
*/
u32 ethtool_op_get_link(struct net_device *dev)
{
return netif_carrier_ok(dev) ? 1 : 0;
}
u32 ethtool_op_get_tx_csum(struct net_device *dev)
{
return (dev->features & NETIF_F_ALL_CSUM) != 0;
}
int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
{
if (data)
dev->features |= NETIF_F_IP_CSUM;
else
dev->features &= ~NETIF_F_IP_CSUM;
return 0;
}
int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
{
if (data)
dev->features |= NETIF_F_HW_CSUM;
else
dev->features &= ~NETIF_F_HW_CSUM;
return 0;
}
int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data)
{
if (data)
dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
else
dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
return 0;
}
u32 ethtool_op_get_sg(struct net_device *dev)
{
return (dev->features & NETIF_F_SG) != 0;
}
int ethtool_op_set_sg(struct net_device *dev, u32 data)
{
if (data)
dev->features |= NETIF_F_SG;
else
dev->features &= ~NETIF_F_SG;
return 0;
}
u32 ethtool_op_get_tso(struct net_device *dev)
{
return (dev->features & NETIF_F_TSO) != 0;
}
int ethtool_op_set_tso(struct net_device *dev, u32 data)
{
if (data)
dev->features |= NETIF_F_TSO;
else
dev->features &= ~NETIF_F_TSO;
return 0;
}
u32 ethtool_op_get_ufo(struct net_device *dev)
{
return (dev->features & NETIF_F_UFO) != 0;
}
int ethtool_op_set_ufo(struct net_device *dev, u32 data)
{
if (data)
dev->features |= NETIF_F_UFO;
else
dev->features &= ~NETIF_F_UFO;
return 0;
}
/* the following list of flags are the same as their associated
* NETIF_F_xxx values in include/linux/netdevice.h
*/
static const u32 flags_dup_features =
ETH_FLAG_LRO;
u32 ethtool_op_get_flags(struct net_device *dev)
{
/* in the future, this function will probably contain additional
* handling for flags which are not so easily handled
* by a simple masking operation
*/
return dev->features & flags_dup_features;
}
int ethtool_op_set_flags(struct net_device *dev, u32 data)
{
if (data & ETH_FLAG_LRO)
dev->features |= NETIF_F_LRO;
else
dev->features &= ~NETIF_F_LRO;
return 0;
}
/* Handlers for each ethtool command */
static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
{
struct ethtool_cmd cmd = { ETHTOOL_GSET };
int err;
if (!dev->ethtool_ops->get_settings)
return -EOPNOTSUPP;
err = dev->ethtool_ops->get_settings(dev, &cmd);
if (err < 0)
return err;
if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
return -EFAULT;
return 0;
}
static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
{
struct ethtool_cmd cmd;
if (!dev->ethtool_ops->set_settings)
return -EOPNOTSUPP;
if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
return -EFAULT;
return dev->ethtool_ops->set_settings(dev, &cmd);
}
static int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr)
{
struct ethtool_drvinfo info;
const struct ethtool_ops *ops = dev->ethtool_ops;
if (!ops->get_drvinfo)
return -EOPNOTSUPP;
memset(&info, 0, sizeof(info));
info.cmd = ETHTOOL_GDRVINFO;
ops->get_drvinfo(dev, &info);
if (ops->get_sset_count) {
int rc;
rc = ops->get_sset_count(dev, ETH_SS_TEST);
if (rc >= 0)
info.testinfo_len = rc;
rc = ops->get_sset_count(dev, ETH_SS_STATS);
if (rc >= 0)
info.n_stats = rc;
rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
if (rc >= 0)
info.n_priv_flags = rc;
} else {
/* code path for obsolete hooks */
if (ops->self_test_count)
info.testinfo_len = ops->self_test_count(dev);
if (ops->get_stats_count)
info.n_stats = ops->get_stats_count(dev);
}
if (ops->get_regs_len)
info.regdump_len = ops->get_regs_len(dev);
if (ops->get_eeprom_len)
info.eedump_len = ops->get_eeprom_len(dev);
if (copy_to_user(useraddr, &info, sizeof(info)))
return -EFAULT;
return 0;
}
static int ethtool_set_rxnfc(struct net_device *dev, void __user *useraddr)
{
struct ethtool_rxnfc cmd;
if (!dev->ethtool_ops->set_rxnfc)
return -EOPNOTSUPP;
if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
return -EFAULT;
return dev->ethtool_ops->set_rxnfc(dev, &cmd);
}
static int ethtool_get_rxnfc(struct net_device *dev, void __user *useraddr)
{
struct ethtool_rxnfc info;
const struct ethtool_ops *ops = dev->ethtool_ops;
int ret;
void *rule_buf = NULL;
if (!ops->get_rxnfc)
return -EOPNOTSUPP;
if (copy_from_user(&info, useraddr, sizeof(info)))
return -EFAULT;
if (info.cmd == ETHTOOL_GRXCLSRLALL) {
if (info.rule_cnt > 0) {
rule_buf = kmalloc(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, sizeof(info)))
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_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 = kmalloc(reglen, GFP_USER);
if (!regbuf)
return -ENOMEM;
ops->get_regs(dev, ®s, regbuf);
ret = -EFAULT;
if (copy_to_user(useraddr, ®s, sizeof(regs)))
goto out;
useraddr += offsetof(struct ethtool_regs, data);
if (copy_to_user(useraddr, regbuf, regs.len))
goto out;
ret = 0;
out:
kfree(regbuf);
return ret;
}
static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
{
struct ethtool_wolinfo wol = { 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_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_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->get_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);
ret = ops->get_eeprom(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_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 int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr)
{
struct ethtool_coalesce coalesce = { 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 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 = { 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 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_set_sg(struct net_device *dev, u32 data)
{
int err;
if (!data && dev->ethtool_ops->set_tso) {
err = dev->ethtool_ops->set_tso(dev, 0);
if (err)
return err;
}
if (!data && dev->ethtool_ops->set_ufo) {
err = dev->ethtool_ops->set_ufo(dev, 0);
if (err)
return err;
}
return dev->ethtool_ops->set_sg(dev, data);
}
static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr)
{
struct ethtool_value edata;
int err;
if (!dev->ethtool_ops->set_tx_csum)
return -EOPNOTSUPP;
if (copy_from_user(&edata, useraddr, sizeof(edata)))
return -EFAULT;
if (!edata.data && dev->ethtool_ops->set_sg) {
err = __ethtool_set_sg(dev, 0);
if (err)
return err;
}
return dev->ethtool_ops->set_tx_csum(dev, edata.data);
}
static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr)
{
struct ethtool_value edata;
if (!dev->ethtool_ops->set_rx_csum)
return -EOPNOTSUPP;
if (copy_from_user(&edata, useraddr, sizeof(edata)))
return -EFAULT;
if (!edata.data && dev->ethtool_ops->set_sg)
dev->features &= ~NETIF_F_GRO;
return dev->ethtool_ops->set_rx_csum(dev, edata.data);
}
static int ethtool_set_sg(struct net_device *dev, char __user *useraddr)
{
struct ethtool_value edata;
if (!dev->ethtool_ops->set_sg)
return -EOPNOTSUPP;
if (copy_from_user(&edata, useraddr, sizeof(edata)))
return -EFAULT;
if (edata.data &&
!(dev->features & NETIF_F_ALL_CSUM))
return -EINVAL;
return __ethtool_set_sg(dev, edata.data);
}
static int ethtool_set_tso(struct net_device *dev, char __user *useraddr)
{
struct ethtool_value edata;
if (!dev->ethtool_ops->set_tso)
return -EOPNOTSUPP;
if (copy_from_user(&edata, useraddr, sizeof(edata)))
return -EFAULT;
if (edata.data && !(dev->features & NETIF_F_SG))
return -EINVAL;
return dev->ethtool_ops->set_tso(dev, edata.data);
}
static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr)
{
struct ethtool_value edata;
if (!dev->ethtool_ops->set_ufo)
return -EOPNOTSUPP;
if (copy_from_user(&edata, useraddr, sizeof(edata)))
return -EFAULT;
if (edata.data && !(dev->features & NETIF_F_SG))
return -EINVAL;
if (edata.data && !(dev->features & NETIF_F_HW_CSUM))
return -EINVAL;
return dev->ethtool_ops->set_ufo(dev, edata.data);
}
static int ethtool_get_gso(struct net_device *dev, char __user *useraddr)
{
struct ethtool_value edata = { ETHTOOL_GGSO };
edata.data = dev->features & NETIF_F_GSO;
if (copy_to_user(useraddr, &edata, sizeof(edata)))
return -EFAULT;
return 0;
}
static int ethtool_set_gso(struct net_device *dev, char __user *useraddr)
{
struct ethtool_value edata;
if (copy_from_user(&edata, useraddr, sizeof(edata)))
return -EFAULT;
if (edata.data)
dev->features |= NETIF_F_GSO;
else
dev->features &= ~NETIF_F_GSO;
return 0;
}
static int ethtool_get_gro(struct net_device *dev, char __user *useraddr)
{
struct ethtool_value edata = { ETHTOOL_GGRO };
edata.data = dev->features & NETIF_F_GRO;
if (copy_to_user(useraddr, &edata, sizeof(edata)))
return -EFAULT;
return 0;
}
static int ethtool_set_gro(struct net_device *dev, char __user *useraddr)
{
struct ethtool_value edata;
if (copy_from_user(&edata, useraddr, sizeof(edata)))
return -EFAULT;
if (edata.data) {
if (!dev->ethtool_ops->get_rx_csum ||
!dev->ethtool_ops->get_rx_csum(dev))
return -EINVAL;
dev->features |= NETIF_F_GRO;
} else
dev->features &= ~NETIF_F_GRO;
return 0;
}
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)
return -EOPNOTSUPP;
if (!ops->get_sset_count && !ops->self_test_count)
return -EOPNOTSUPP;
if (ops->get_sset_count)
test_len = ops->get_sset_count(dev, ETH_SS_TEST);
else
/* code path for obsolete hook */
test_len = ops->self_test_count(dev);
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;
const struct ethtool_ops *ops = dev->ethtool_ops;
u8 *data;
int ret;
if (!ops->get_strings)
return -EOPNOTSUPP;
if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
return -EFAULT;
if (ops->get_sset_count) {
ret = ops->get_sset_count(dev, gstrings.string_set);
if (ret < 0)
return ret;
gstrings.len = ret;
} else {
/* code path for obsolete hooks */
switch (gstrings.string_set) {
case ETH_SS_TEST:
if (!ops->self_test_count)
return -EOPNOTSUPP;
gstrings.len = ops->self_test_count(dev);
break;
case ETH_SS_STATS:
if (!ops->get_stats_count)
return -EOPNOTSUPP;
gstrings.len = ops->get_stats_count(dev);
break;
default:
return -EINVAL;
}
}
data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
if (!data)
return -ENOMEM;
ops->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;
if (!dev->ethtool_ops->phys_id)
return -EOPNOTSUPP;
if (copy_from_user(&id, useraddr, sizeof(id)))
return -EFAULT;
return dev->ethtool_ops->phys_id(dev, id.data);
}
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)
return -EOPNOTSUPP;
if (!ops->get_sset_count && !ops->get_stats_count)
return -EOPNOTSUPP;
if (ops->get_sset_count)
n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
else
/* code path for obsolete hook */
n_stats = ops->get_stats_count(dev);
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 };
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);
}
/* The main entry point in this file. Called from net/core/dev.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;
unsigned long old_features;
if (!dev || !netif_device_present(dev))
return -ENODEV;
if (!dev->ethtool_ops)
return -EOPNOTSUPP;
if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd)))
return -EFAULT;
/* Allow some commands to be done by anyone */
switch(ethcmd) {
case ETHTOOL_GDRVINFO:
case ETHTOOL_GMSGLVL:
case ETHTOOL_GCOALESCE:
case ETHTOOL_GRINGPARAM:
case ETHTOOL_GPAUSEPARAM:
case ETHTOOL_GRXCSUM:
case ETHTOOL_GTXCSUM:
case ETHTOOL_GSG:
case ETHTOOL_GSTRINGS:
case ETHTOOL_GTSO:
case ETHTOOL_GPERMADDR:
case ETHTOOL_GUFO:
case ETHTOOL_GGSO:
case ETHTOOL_GFLAGS:
case ETHTOOL_GPFLAGS:
case ETHTOOL_GRXFH:
case ETHTOOL_GRXRINGS:
case ETHTOOL_GRXCLSRLCNT:
case ETHTOOL_GRXCLSRULE:
case ETHTOOL_GRXCLSRLALL:
break;
default:
if (!capable(CAP_NET_ADMIN))
return -EPERM;
}
if (dev->ethtool_ops->begin)
if ((rc = dev->ethtool_ops->begin(dev)) < 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_NWAY_RST:
rc = ethtool_nway_reset(dev);
break;
case ETHTOOL_GLINK:
rc = ethtool_get_value(dev, useraddr, ethcmd,
dev->ethtool_ops->get_link);
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);