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kernel-fxtec-pro1x/net/core/ethtool.c
Peter P Waskiewicz Jr 15682bc488 ethtool: Introduce n-tuple filter programming support 
This patchset enables the ethtool layer to program n-tuple
filters to an underlying device.  The idea is to allow capable
hardware to have static rules applied that can assist steering
flows into appropriate queues.

Hardware that is known to support these types of filters today
are ixgbe and niu.

Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-10 20:03:05 -08:00

1466 lines
34 KiB
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_rx_csum(struct net_device *dev)
{
return (dev->features & NETIF_F_ALL_CSUM) != 0;
}
EXPORT_SYMBOL(ethtool_op_get_rx_csum);
u32 ethtool_op_get_tx_csum(struct net_device *dev)
{
return (dev->features & NETIF_F_ALL_CSUM) != 0;
}
EXPORT_SYMBOL(ethtool_op_get_tx_csum);
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 | ETH_FLAG_NTUPLE);
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;
if (data & ETH_FLAG_NTUPLE)
dev->features |= NETIF_F_NTUPLE;
else
dev->features &= ~NETIF_F_NTUPLE;
return 0;
}
void ethtool_ntuple_flush(struct net_device *dev)
{
struct ethtool_rx_ntuple_flow_spec_container *fsc, *f;
list_for_each_entry_safe(fsc, f, &dev->ethtool_ntuple_list.list, list) {
list_del(&fsc->list);
kfree(fsc);
}
dev->ethtool_ntuple_list.count = 0;
}
EXPORT_SYMBOL(ethtool_ntuple_flush);
/* 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;
}
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 __rx_ntuple_filter_add(struct ethtool_rx_ntuple_list *list,
struct ethtool_rx_ntuple_flow_spec *spec)
{
struct ethtool_rx_ntuple_flow_spec_container *fsc;
/* don't add filters forever */
if (list->count >= ETHTOOL_MAX_NTUPLE_LIST_ENTRY)
return 0;
fsc = kmalloc(sizeof(*fsc), GFP_ATOMIC);
if (!fsc)
return -ENOMEM;
/* Copy the whole filter over */
fsc->fs.flow_type = spec->flow_type;
memcpy(&fsc->fs.h_u, &spec->h_u, sizeof(spec->h_u));
memcpy(&fsc->fs.m_u, &spec->m_u, sizeof(spec->m_u));
fsc->fs.vlan_tag = spec->vlan_tag;
fsc->fs.vlan_tag_mask = spec->vlan_tag_mask;
fsc->fs.data = spec->data;
fsc->fs.data_mask = spec->data_mask;
fsc->fs.action = spec->action;
/* add to the list */
list_add_tail_rcu(&fsc->list, &list->list);
list->count++;
return 0;
}
static int ethtool_set_rx_ntuple(struct net_device *dev, void __user *useraddr)
{
struct ethtool_rx_ntuple cmd;
const struct ethtool_ops *ops = dev->ethtool_ops;
int ret;
if (!ops->set_rx_ntuple)
return -EOPNOTSUPP;
if (!(dev->features & NETIF_F_NTUPLE))
return -EINVAL;
if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
return -EFAULT;
ret = ops->set_rx_ntuple(dev, &cmd);
/*
* Cache filter in dev struct for GET operation only if
* the underlying driver doesn't have its own GET operation, and
* only if the filter was added successfully.
*/
if (!ops->get_rx_ntuple && !ret)
if (__rx_ntuple_filter_add(&dev->ethtool_ntuple_list, &cmd.fs))
return -ENOMEM;
return ret;
}
static int ethtool_get_rx_ntuple(struct net_device *dev, void __user *useraddr)
{
struct ethtool_gstrings gstrings;
const struct ethtool_ops *ops = dev->ethtool_ops;
struct ethtool_rx_ntuple_flow_spec_container *fsc;
u8 *data;
char *p;
int ret, i, num_strings = 0;
if (!ops->get_sset_count)
return -EOPNOTSUPP;
if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
return -EFAULT;
ret = ops->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;
if (ops->get_rx_ntuple) {
/* driver-specific filter grab */
ret = ops->get_rx_ntuple(dev, gstrings.string_set, data);
goto copy;
}
/* default ethtool filter grab */
i = 0;
p = (char *)data;
list_for_each_entry(fsc, &dev->ethtool_ntuple_list.list, list) {
sprintf(p, "Filter %d:\n", i);
p += ETH_GSTRING_LEN;
num_strings++;
switch (fsc->fs.flow_type) {
case TCP_V4_FLOW:
sprintf(p, "\tFlow Type: TCP\n");
p += ETH_GSTRING_LEN;
num_strings++;
break;
case UDP_V4_FLOW:
sprintf(p, "\tFlow Type: UDP\n");
p += ETH_GSTRING_LEN;
num_strings++;
break;
case SCTP_V4_FLOW:
sprintf(p, "\tFlow Type: SCTP\n");
p += ETH_GSTRING_LEN;
num_strings++;
break;
case AH_ESP_V4_FLOW:
sprintf(p, "\tFlow Type: AH ESP\n");
p += ETH_GSTRING_LEN;
num_strings++;
break;
case ESP_V4_FLOW:
sprintf(p, "\tFlow Type: ESP\n");
p += ETH_GSTRING_LEN;
num_strings++;
break;
case IP_USER_FLOW:
sprintf(p, "\tFlow Type: Raw IP\n");
p += ETH_GSTRING_LEN;
num_strings++;
break;
case IPV4_FLOW:
sprintf(p, "\tFlow Type: IPv4\n");
p += ETH_GSTRING_LEN;
num_strings++;
break;
default:
sprintf(p, "\tFlow Type: Unknown\n");
p += ETH_GSTRING_LEN;
num_strings++;
goto unknown_filter;
};
/* now the rest of the filters */
switch (fsc->fs.flow_type) {
case TCP_V4_FLOW:
case UDP_V4_FLOW:
case SCTP_V4_FLOW:
sprintf(p, "\tSrc IP addr: 0x%x\n",
fsc->fs.h_u.tcp_ip4_spec.ip4src);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tSrc IP mask: 0x%x\n",
fsc->fs.m_u.tcp_ip4_spec.ip4src);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tDest IP addr: 0x%x\n",
fsc->fs.h_u.tcp_ip4_spec.ip4dst);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tDest IP mask: 0x%x\n",
fsc->fs.m_u.tcp_ip4_spec.ip4dst);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tSrc Port: %d, mask: 0x%x\n",
fsc->fs.h_u.tcp_ip4_spec.psrc,
fsc->fs.m_u.tcp_ip4_spec.psrc);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tDest Port: %d, mask: 0x%x\n",
fsc->fs.h_u.tcp_ip4_spec.pdst,
fsc->fs.m_u.tcp_ip4_spec.pdst);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tTOS: %d, mask: 0x%x\n",
fsc->fs.h_u.tcp_ip4_spec.tos,
fsc->fs.m_u.tcp_ip4_spec.tos);
p += ETH_GSTRING_LEN;
num_strings++;
break;
case AH_ESP_V4_FLOW:
case ESP_V4_FLOW:
sprintf(p, "\tSrc IP addr: 0x%x\n",
fsc->fs.h_u.ah_ip4_spec.ip4src);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tSrc IP mask: 0x%x\n",
fsc->fs.m_u.ah_ip4_spec.ip4src);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tDest IP addr: 0x%x\n",
fsc->fs.h_u.ah_ip4_spec.ip4dst);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tDest IP mask: 0x%x\n",
fsc->fs.m_u.ah_ip4_spec.ip4dst);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tSPI: %d, mask: 0x%x\n",
fsc->fs.h_u.ah_ip4_spec.spi,
fsc->fs.m_u.ah_ip4_spec.spi);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tTOS: %d, mask: 0x%x\n",
fsc->fs.h_u.ah_ip4_spec.tos,
fsc->fs.m_u.ah_ip4_spec.tos);
p += ETH_GSTRING_LEN;
num_strings++;
break;
case IP_USER_FLOW:
sprintf(p, "\tSrc IP addr: 0x%x\n",
fsc->fs.h_u.raw_ip4_spec.ip4src);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tSrc IP mask: 0x%x\n",
fsc->fs.m_u.raw_ip4_spec.ip4src);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tDest IP addr: 0x%x\n",
fsc->fs.h_u.raw_ip4_spec.ip4dst);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tDest IP mask: 0x%x\n",
fsc->fs.m_u.raw_ip4_spec.ip4dst);
p += ETH_GSTRING_LEN;
num_strings++;
break;
case IPV4_FLOW:
sprintf(p, "\tSrc IP addr: 0x%x\n",
fsc->fs.h_u.usr_ip4_spec.ip4src);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tSrc IP mask: 0x%x\n",
fsc->fs.m_u.usr_ip4_spec.ip4src);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tDest IP addr: 0x%x\n",
fsc->fs.h_u.usr_ip4_spec.ip4dst);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tDest IP mask: 0x%x\n",
fsc->fs.m_u.usr_ip4_spec.ip4dst);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tL4 bytes: 0x%x, mask: 0x%x\n",
fsc->fs.h_u.usr_ip4_spec.l4_4_bytes,
fsc->fs.m_u.usr_ip4_spec.l4_4_bytes);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tTOS: %d, mask: 0x%x\n",
fsc->fs.h_u.usr_ip4_spec.tos,
fsc->fs.m_u.usr_ip4_spec.tos);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tIP Version: %d, mask: 0x%x\n",
fsc->fs.h_u.usr_ip4_spec.ip_ver,
fsc->fs.m_u.usr_ip4_spec.ip_ver);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tProtocol: %d, mask: 0x%x\n",
fsc->fs.h_u.usr_ip4_spec.proto,
fsc->fs.m_u.usr_ip4_spec.proto);
p += ETH_GSTRING_LEN;
num_strings++;
break;
};
sprintf(p, "\tVLAN: %d, mask: 0x%x\n",
fsc->fs.vlan_tag, fsc->fs.vlan_tag_mask);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tUser-defined: 0x%Lx\n", fsc->fs.data);
p += ETH_GSTRING_LEN;
num_strings++;
sprintf(p, "\tUser-defined mask: 0x%Lx\n", fsc->fs.data_mask);
p += ETH_GSTRING_LEN;
num_strings++;
if (fsc->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP)
sprintf(p, "\tAction: Drop\n");
else
sprintf(p, "\tAction: Direct to queue %d\n",
fsc->fs.action);
p += ETH_GSTRING_LEN;
num_strings++;
unknown_filter:
i++;
}
copy:
/* indicate to userspace how many strings we actually have */
gstrings.len = num_strings;
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_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(&regs, 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, &regs, regbuf);
ret = -EFAULT;
if (copy_to_user(useraddr, &regs, 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_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;
/* Clear ethtool n-tuple list */
ethtool_ntuple_flush(dev);
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 = { 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 || !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;
const struct ethtool_ops *ops = dev->ethtool_ops;
u8 *data;
int ret;
if (!ops->get_strings || !ops->get_sset_count)
return -EOPNOTSUPP;
if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
return -EFAULT;
ret = ops->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;
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 || !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 };
if (!actor)
return -EOPNOTSUPP;
edata.data = actor(dev);
if (copy_to_user(useraddr, &edata, sizeof(edata)))
return -EFAULT;
return 0;
}
static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
void (*actor)(struct net_device *, u32))
{
struct ethtool_value edata;
if (!actor)
return -EOPNOTSUPP;
if (copy_from_user(&edata, useraddr, sizeof(edata)))
return -EFAULT;
actor(dev, edata.data);
return 0;
}
static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
int (*actor)(struct net_device *, u32))
{
struct ethtool_value edata;
if (!actor)
return -EOPNOTSUPP;
if (copy_from_user(&edata, useraddr, sizeof(edata)))
return -EFAULT;
return actor(dev, edata.data);
}
static int ethtool_flash_device(struct net_device *dev, 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;
return dev->ethtool_ops->flash_device(dev, &efl);
}
/* 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(&ethcmd, 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);
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 ?
dev->ethtool_ops->get_rx_csum :
ethtool_op_get_rx_csum));
break;
case ETHTOOL_SRXCSUM:
rc = ethtool_set_rx_csum(dev, useraddr);
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 ?
dev->ethtool_ops->get_flags :
ethtool_op_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;
case ETHTOOL_GRXFH:
case ETHTOOL_GRXRINGS:
case ETHTOOL_GRXCLSRLCNT:
case ETHTOOL_GRXCLSRULE:
case ETHTOOL_GRXCLSRLALL:
rc = ethtool_get_rxnfc(dev, useraddr);
break;
case ETHTOOL_SRXFH:
case ETHTOOL_SRXCLSRLDEL:
case ETHTOOL_SRXCLSRLINS:
rc = ethtool_set_rxnfc(dev, useraddr);
break;
case ETHTOOL_GGRO:
rc = ethtool_get_gro(dev, useraddr);
break;
case ETHTOOL_SGRO:
rc = ethtool_set_gro(dev, useraddr);
break;
case ETHTOOL_FLASHDEV:
rc = ethtool_flash_device(dev, useraddr);
break;
case ETHTOOL_RESET:
rc = ethtool_reset(dev, useraddr);
break;
case ETHTOOL_SRXNTUPLE:
rc = ethtool_set_rx_ntuple(dev, useraddr);
break;
case ETHTOOL_GRXNTUPLE:
rc = ethtool_get_rx_ntuple(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;
}
EXPORT_SYMBOL(ethtool_op_get_link);
EXPORT_SYMBOL(ethtool_op_get_sg);
EXPORT_SYMBOL(ethtool_op_get_tso);
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);
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