88d3aafdae
For the operations get-tx-csum get-sg get-tso get-ufo the default ethtool_op_xxx behavior is fine for all drivers, so we permit op==NULL to imply the default behavior. This provides a more uniform behavior across all drivers, eliminating ethtool(8) "ioctl not supported" errors on older drivers that had not been updated for the latest sub-ioctls. The ethtool_op_xxx() functions are left exported, in case anyone wishes to call them directly from a driver-private implementation -- a not-uncommon case. Should an ethtool_op_xxx() helper remain unused for a while, except by net/core/ethtool.c, we can un-export it at a later date. [ Resolved conflicts with set/get value ethtool patch... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
993 lines
22 KiB
C
993 lines
22 KiB
C
/*
|
|
* 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_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;
|
|
u8 *data;
|
|
int ret;
|
|
|
|
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(eeprom.len, GFP_USER);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
ret = -EFAULT;
|
|
if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len))
|
|
goto out;
|
|
|
|
ret = ops->get_eeprom(dev, &eeprom, data);
|
|
if (ret)
|
|
goto out;
|
|
|
|
ret = -EFAULT;
|
|
if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
|
|
goto out;
|
|
if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len))
|
|
goto out;
|
|
ret = 0;
|
|
|
|
out:
|
|
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;
|
|
u8 *data;
|
|
int ret;
|
|
|
|
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(eeprom.len, GFP_USER);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
ret = -EFAULT;
|
|
if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len))
|
|
goto out;
|
|
|
|
ret = ops->set_eeprom(dev, &eeprom, data);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len))
|
|
ret = -EFAULT;
|
|
|
|
out:
|
|
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_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_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:
|
|
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);
|
|
break;
|
|
case ETHTOOL_SPAUSEPARAM:
|
|
rc = ethtool_set_pauseparam(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GRXCSUM:
|
|
rc = ethtool_get_value(dev, useraddr, ethcmd,
|
|
dev->ethtool_ops->get_rx_csum);
|
|
break;
|
|
case ETHTOOL_SRXCSUM:
|
|
rc = ethtool_set_value(dev, useraddr,
|
|
dev->ethtool_ops->set_rx_csum);
|
|
break;
|
|
case ETHTOOL_GTXCSUM:
|
|
rc = ethtool_get_value(dev, useraddr, ethcmd,
|
|
(dev->ethtool_ops->get_tx_csum ?
|
|
dev->ethtool_ops->get_tx_csum :
|
|
ethtool_op_get_tx_csum));
|
|
break;
|
|
case ETHTOOL_STXCSUM:
|
|
rc = ethtool_set_tx_csum(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GSG:
|
|
rc = ethtool_get_value(dev, useraddr, ethcmd,
|
|
(dev->ethtool_ops->get_sg ?
|
|
dev->ethtool_ops->get_sg :
|
|
ethtool_op_get_sg));
|
|
break;
|
|
case ETHTOOL_SSG:
|
|
rc = ethtool_set_sg(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GTSO:
|
|
rc = ethtool_get_value(dev, useraddr, ethcmd,
|
|
(dev->ethtool_ops->get_tso ?
|
|
dev->ethtool_ops->get_tso :
|
|
ethtool_op_get_tso));
|
|
break;
|
|
case ETHTOOL_STSO:
|
|
rc = ethtool_set_tso(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_GUFO:
|
|
rc = ethtool_get_value(dev, useraddr, ethcmd,
|
|
(dev->ethtool_ops->get_ufo ?
|
|
dev->ethtool_ops->get_ufo :
|
|
ethtool_op_get_ufo));
|
|
break;
|
|
case ETHTOOL_SUFO:
|
|
rc = ethtool_set_ufo(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GGSO:
|
|
rc = ethtool_get_gso(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SGSO:
|
|
rc = ethtool_set_gso(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GFLAGS:
|
|
rc = ethtool_get_value(dev, useraddr, ethcmd,
|
|
dev->ethtool_ops->get_flags);
|
|
break;
|
|
case ETHTOOL_SFLAGS:
|
|
rc = ethtool_set_value(dev, useraddr,
|
|
dev->ethtool_ops->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;
|
|
default:
|
|
rc = -EOPNOTSUPP;
|
|
}
|
|
|
|
if (dev->ethtool_ops->complete)
|
|
dev->ethtool_ops->complete(dev);
|
|
|
|
if (old_features != dev->features)
|
|
netdev_features_change(dev);
|
|
|
|
return rc;
|
|
}
|
|
|
|
EXPORT_SYMBOL(ethtool_op_get_link);
|
|
EXPORT_SYMBOL(ethtool_op_get_sg);
|
|
EXPORT_SYMBOL(ethtool_op_get_tso);
|
|
EXPORT_SYMBOL(ethtool_op_get_tx_csum);
|
|
EXPORT_SYMBOL(ethtool_op_set_sg);
|
|
EXPORT_SYMBOL(ethtool_op_set_tso);
|
|
EXPORT_SYMBOL(ethtool_op_set_tx_csum);
|
|
EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
|
|
EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
|
|
EXPORT_SYMBOL(ethtool_op_set_ufo);
|
|
EXPORT_SYMBOL(ethtool_op_get_ufo);
|
|
EXPORT_SYMBOL(ethtool_op_set_flags);
|
|
EXPORT_SYMBOL(ethtool_op_get_flags);
|