mirror of https://gitee.com/openkylin/linux.git
1860 lines
44 KiB
C
1860 lines
44 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/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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u32 ethtool_op_get_tx_csum(struct net_device *dev)
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{
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return (dev->features & NETIF_F_ALL_CSUM) != 0;
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}
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EXPORT_SYMBOL(ethtool_op_get_tx_csum);
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int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
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{
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if (data)
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dev->features |= NETIF_F_IP_CSUM;
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else
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dev->features &= ~NETIF_F_IP_CSUM;
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return 0;
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}
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EXPORT_SYMBOL(ethtool_op_set_tx_csum);
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int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
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{
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if (data)
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dev->features |= NETIF_F_HW_CSUM;
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else
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dev->features &= ~NETIF_F_HW_CSUM;
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return 0;
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}
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EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
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int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data)
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{
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if (data)
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dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
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else
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dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
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return 0;
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}
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EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
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u32 ethtool_op_get_sg(struct net_device *dev)
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{
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return (dev->features & NETIF_F_SG) != 0;
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}
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EXPORT_SYMBOL(ethtool_op_get_sg);
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int ethtool_op_set_sg(struct net_device *dev, u32 data)
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{
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if (data)
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dev->features |= NETIF_F_SG;
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else
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dev->features &= ~NETIF_F_SG;
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return 0;
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}
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EXPORT_SYMBOL(ethtool_op_set_sg);
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u32 ethtool_op_get_tso(struct net_device *dev)
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{
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return (dev->features & NETIF_F_TSO) != 0;
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}
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EXPORT_SYMBOL(ethtool_op_get_tso);
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int ethtool_op_set_tso(struct net_device *dev, u32 data)
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{
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if (data)
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dev->features |= NETIF_F_TSO;
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else
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dev->features &= ~NETIF_F_TSO;
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return 0;
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}
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EXPORT_SYMBOL(ethtool_op_set_tso);
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u32 ethtool_op_get_ufo(struct net_device *dev)
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{
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return (dev->features & NETIF_F_UFO) != 0;
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}
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EXPORT_SYMBOL(ethtool_op_get_ufo);
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int ethtool_op_set_ufo(struct net_device *dev, u32 data)
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{
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if (data)
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dev->features |= NETIF_F_UFO;
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else
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dev->features &= ~NETIF_F_UFO;
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return 0;
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}
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EXPORT_SYMBOL(ethtool_op_set_ufo);
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/* the following list of flags are the same as their associated
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* NETIF_F_xxx values in include/linux/netdevice.h
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*/
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static const u32 flags_dup_features =
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(ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | ETH_FLAG_NTUPLE |
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ETH_FLAG_RXHASH);
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u32 ethtool_op_get_flags(struct net_device *dev)
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{
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/* in the future, this function will probably contain additional
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* handling for flags which are not so easily handled
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* by a simple masking operation
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*/
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return dev->features & flags_dup_features;
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}
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EXPORT_SYMBOL(ethtool_op_get_flags);
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/* Check if device can enable (or disable) particular feature coded in "data"
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* argument. Flags "supported" describe features that can be toggled by device.
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* If feature can not be toggled, it state (enabled or disabled) must match
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* hardcoded device features state, otherwise flags are marked as invalid.
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*/
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bool ethtool_invalid_flags(struct net_device *dev, u32 data, u32 supported)
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{
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u32 features = dev->features & flags_dup_features;
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/* "data" can contain only flags_dup_features bits,
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* see __ethtool_set_flags */
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return (features & ~supported) != (data & ~supported);
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}
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EXPORT_SYMBOL(ethtool_invalid_flags);
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int ethtool_op_set_flags(struct net_device *dev, u32 data, u32 supported)
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{
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if (ethtool_invalid_flags(dev, data, supported))
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return -EINVAL;
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dev->features = ((dev->features & ~flags_dup_features) |
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(data & flags_dup_features));
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return 0;
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}
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EXPORT_SYMBOL(ethtool_op_set_flags);
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/* Handlers for each ethtool command */
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#define ETHTOOL_DEV_FEATURE_WORDS 1
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static void ethtool_get_features_compat(struct net_device *dev,
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struct ethtool_get_features_block *features)
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{
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if (!dev->ethtool_ops)
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return;
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/* getting RX checksum */
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if (dev->ethtool_ops->get_rx_csum)
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if (dev->ethtool_ops->get_rx_csum(dev))
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features[0].active |= NETIF_F_RXCSUM;
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/* mark legacy-changeable features */
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if (dev->ethtool_ops->set_sg)
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features[0].available |= NETIF_F_SG;
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if (dev->ethtool_ops->set_tx_csum)
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features[0].available |= NETIF_F_ALL_CSUM;
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if (dev->ethtool_ops->set_tso)
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features[0].available |= NETIF_F_ALL_TSO;
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if (dev->ethtool_ops->set_rx_csum)
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features[0].available |= NETIF_F_RXCSUM;
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if (dev->ethtool_ops->set_flags)
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features[0].available |= flags_dup_features;
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}
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static int ethtool_set_feature_compat(struct net_device *dev,
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int (*legacy_set)(struct net_device *, u32),
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struct ethtool_set_features_block *features, u32 mask)
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{
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u32 do_set;
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if (!legacy_set)
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return 0;
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if (!(features[0].valid & mask))
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return 0;
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features[0].valid &= ~mask;
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do_set = !!(features[0].requested & mask);
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if (legacy_set(dev, do_set) < 0)
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netdev_info(dev,
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"Legacy feature change (%s) failed for 0x%08x\n",
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do_set ? "set" : "clear", mask);
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return 1;
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}
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static int ethtool_set_flags_compat(struct net_device *dev,
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int (*legacy_set)(struct net_device *, u32),
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struct ethtool_set_features_block *features, u32 mask)
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{
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u32 value;
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if (!legacy_set)
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return 0;
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if (!(features[0].valid & mask))
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return 0;
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value = dev->features & ~features[0].valid;
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value |= features[0].requested;
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features[0].valid &= ~mask;
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if (legacy_set(dev, value & mask) < 0)
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netdev_info(dev, "Legacy flags change failed\n");
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return 1;
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}
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static int ethtool_set_features_compat(struct net_device *dev,
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struct ethtool_set_features_block *features)
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{
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int compat;
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if (!dev->ethtool_ops)
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return 0;
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compat = ethtool_set_feature_compat(dev, dev->ethtool_ops->set_sg,
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features, NETIF_F_SG);
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compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_tx_csum,
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features, NETIF_F_ALL_CSUM);
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compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_tso,
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features, NETIF_F_ALL_TSO);
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compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_rx_csum,
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features, NETIF_F_RXCSUM);
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compat |= ethtool_set_flags_compat(dev, dev->ethtool_ops->set_flags,
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features, flags_dup_features);
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return compat;
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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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{
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.available = dev->hw_features,
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.requested = dev->wanted_features,
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.active = dev->features,
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.never_changed = NETIF_F_NEVER_CHANGE,
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},
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};
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u32 __user *sizeaddr;
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u32 copy_size;
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ethtool_get_features_compat(dev, features);
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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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int 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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if (features[0].valid & ~NETIF_F_ETHTOOL_BITS)
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return -EINVAL;
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if (ethtool_set_features_compat(dev, features))
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ret |= ETHTOOL_F_COMPAT;
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if (features[0].valid & ~dev->hw_features) {
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features[0].valid &= dev->hw_features;
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ret |= ETHTOOL_F_UNSUPPORTED;
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}
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dev->wanted_features &= ~features[0].valid;
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dev->wanted_features |= features[0].valid & features[0].requested;
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__netdev_update_features(dev);
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if ((dev->wanted_features ^ dev->features) & features[0].valid)
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ret |= ETHTOOL_F_WISH;
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return ret;
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}
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static const char netdev_features_strings[ETHTOOL_DEV_FEATURE_WORDS * 32][ETH_GSTRING_LEN] = {
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/* NETIF_F_SG */ "tx-scatter-gather",
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/* NETIF_F_IP_CSUM */ "tx-checksum-ipv4",
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/* NETIF_F_NO_CSUM */ "tx-checksum-unneeded",
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/* NETIF_F_HW_CSUM */ "tx-checksum-ip-generic",
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/* NETIF_F_IPV6_CSUM */ "tx-checksum-ipv6",
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/* NETIF_F_HIGHDMA */ "highdma",
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/* NETIF_F_FRAGLIST */ "tx-scatter-gather-fraglist",
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/* NETIF_F_HW_VLAN_TX */ "tx-vlan-hw-insert",
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/* NETIF_F_HW_VLAN_RX */ "rx-vlan-hw-parse",
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/* NETIF_F_HW_VLAN_FILTER */ "rx-vlan-filter",
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/* NETIF_F_VLAN_CHALLENGED */ "vlan-challenged",
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/* NETIF_F_GSO */ "tx-generic-segmentation",
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/* NETIF_F_LLTX */ "tx-lockless",
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/* NETIF_F_NETNS_LOCAL */ "netns-local",
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/* NETIF_F_GRO */ "rx-gro",
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/* NETIF_F_LRO */ "rx-lro",
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/* NETIF_F_TSO */ "tx-tcp-segmentation",
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/* NETIF_F_UFO */ "tx-udp-fragmentation",
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/* NETIF_F_GSO_ROBUST */ "tx-gso-robust",
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/* NETIF_F_TSO_ECN */ "tx-tcp-ecn-segmentation",
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/* NETIF_F_TSO6 */ "tx-tcp6-segmentation",
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/* NETIF_F_FSO */ "tx-fcoe-segmentation",
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"",
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"",
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/* NETIF_F_FCOE_CRC */ "tx-checksum-fcoe-crc",
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/* NETIF_F_SCTP_CSUM */ "tx-checksum-sctp",
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/* NETIF_F_FCOE_MTU */ "fcoe-mtu",
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/* NETIF_F_NTUPLE */ "rx-ntuple-filter",
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/* NETIF_F_RXHASH */ "rx-hashing",
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/* NETIF_F_RXCSUM */ "rx-checksum",
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/* NETIF_F_NOCACHE_COPY */ "tx-nocache-copy",
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/* NETIF_F_LOOPBACK */ "loopback",
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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 && 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 u32 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 void *__ethtool_get_one_feature_actor(struct net_device *dev, u32 ethcmd)
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{
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const struct ethtool_ops *ops = dev->ethtool_ops;
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if (!ops)
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return NULL;
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switch (ethcmd) {
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case ETHTOOL_GTXCSUM:
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return ops->get_tx_csum;
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case ETHTOOL_GRXCSUM:
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return ops->get_rx_csum;
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case ETHTOOL_SSG:
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return ops->get_sg;
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case ETHTOOL_STSO:
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return ops->get_tso;
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case ETHTOOL_SUFO:
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return ops->get_ufo;
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default:
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return NULL;
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}
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}
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static u32 __ethtool_get_rx_csum_oldbug(struct net_device *dev)
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{
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return !!(dev->features & NETIF_F_ALL_CSUM);
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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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u32 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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/* compatibility with discrete get_ ops */
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if (!(dev->hw_features & mask)) {
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u32 (*actor)(struct net_device *);
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actor = __ethtool_get_one_feature_actor(dev, ethcmd);
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/* bug compatibility with old get_rx_csum */
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if (ethcmd == ETHTOOL_GRXCSUM && !actor)
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actor = __ethtool_get_rx_csum_oldbug;
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if (actor)
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edata.data = actor(dev);
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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_tx_csum(struct net_device *dev, u32 data);
|
|
static int __ethtool_set_rx_csum(struct net_device *dev, u32 data);
|
|
static int __ethtool_set_sg(struct net_device *dev, u32 data);
|
|
static int __ethtool_set_tso(struct net_device *dev, u32 data);
|
|
static int __ethtool_set_ufo(struct net_device *dev, u32 data);
|
|
|
|
static int ethtool_set_one_feature(struct net_device *dev,
|
|
void __user *useraddr, u32 ethcmd)
|
|
{
|
|
struct ethtool_value edata;
|
|
u32 mask;
|
|
|
|
if (copy_from_user(&edata, useraddr, sizeof(edata)))
|
|
return -EFAULT;
|
|
|
|
mask = ethtool_get_feature_mask(ethcmd);
|
|
mask &= dev->hw_features;
|
|
if (mask) {
|
|
if (edata.data)
|
|
dev->wanted_features |= mask;
|
|
else
|
|
dev->wanted_features &= ~mask;
|
|
|
|
__netdev_update_features(dev);
|
|
return 0;
|
|
}
|
|
|
|
/* Driver is not converted to ndo_fix_features or does not
|
|
* support changing this offload. In the latter case it won't
|
|
* have corresponding ethtool_ops field set.
|
|
*
|
|
* Following part is to be removed after all drivers advertise
|
|
* their changeable features in netdev->hw_features and stop
|
|
* using discrete offload setting ops.
|
|
*/
|
|
|
|
switch (ethcmd) {
|
|
case ETHTOOL_STXCSUM:
|
|
return __ethtool_set_tx_csum(dev, edata.data);
|
|
case ETHTOOL_SRXCSUM:
|
|
return __ethtool_set_rx_csum(dev, edata.data);
|
|
case ETHTOOL_SSG:
|
|
return __ethtool_set_sg(dev, edata.data);
|
|
case ETHTOOL_STSO:
|
|
return __ethtool_set_tso(dev, edata.data);
|
|
case ETHTOOL_SUFO:
|
|
return __ethtool_set_ufo(dev, edata.data);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
int __ethtool_set_flags(struct net_device *dev, u32 data)
|
|
{
|
|
u32 changed;
|
|
|
|
if (data & ~flags_dup_features)
|
|
return -EINVAL;
|
|
|
|
/* legacy set_flags() op */
|
|
if (dev->ethtool_ops->set_flags) {
|
|
if (unlikely(dev->hw_features & flags_dup_features))
|
|
netdev_warn(dev,
|
|
"driver BUG: mixed hw_features and set_flags()\n");
|
|
return dev->ethtool_ops->set_flags(dev, data);
|
|
}
|
|
|
|
/* allow changing only bits set in hw_features */
|
|
changed = (data ^ dev->features) & flags_dup_features;
|
|
if (changed & ~dev->hw_features)
|
|
return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
|
|
|
|
dev->wanted_features =
|
|
(dev->wanted_features & ~changed) | (data & dev->hw_features);
|
|
|
|
__netdev_update_features(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_cmd 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 noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
struct ethtool_drvinfo info;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
|
|
memset(&info, 0, sizeof(info));
|
|
info.cmd = ETHTOOL_GDRVINFO;
|
|
if (ops && ops->get_drvinfo) {
|
|
ops->get_drvinfo(dev, &info);
|
|
} else if (dev->dev.parent && dev->dev.parent->driver) {
|
|
strlcpy(info.bus_info, dev_name(dev->dev.parent),
|
|
sizeof(info.bus_info));
|
|
strlcpy(info.driver, dev->dev.parent->driver->name,
|
|
sizeof(info.driver));
|
|
} else {
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/*
|
|
* this method of obtaining string set info is deprecated;
|
|
* Use ETHTOOL_GSSET_INFO instead.
|
|
*/
|
|
if (ops && 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 && ops->get_regs_len)
|
|
info.regdump_len = ops->get_regs_len(dev);
|
|
if (ops && 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 noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
struct ethtool_sset_info info;
|
|
u64 sset_mask;
|
|
int i, idx = 0, n_bits = 0, ret, rc;
|
|
u32 *info_buf = NULL;
|
|
|
|
if (copy_from_user(&info, useraddr, sizeof(info)))
|
|
return -EFAULT;
|
|
|
|
/* store copy of mask, because we zero struct later on */
|
|
sset_mask = info.sset_mask;
|
|
if (!sset_mask)
|
|
return 0;
|
|
|
|
/* calculate size of return buffer */
|
|
n_bits = hweight64(sset_mask);
|
|
|
|
memset(&info, 0, sizeof(info));
|
|
info.cmd = ETHTOOL_GSSET_INFO;
|
|
|
|
info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
|
|
if (!info_buf)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* fill return buffer based on input bitmask and successful
|
|
* get_sset_count return
|
|
*/
|
|
for (i = 0; i < 64; i++) {
|
|
if (!(sset_mask & (1ULL << i)))
|
|
continue;
|
|
|
|
rc = __ethtool_get_sset_count(dev, i);
|
|
if (rc >= 0) {
|
|
info.sset_mask |= (1ULL << i);
|
|
info_buf[idx++] = rc;
|
|
}
|
|
}
|
|
|
|
ret = -EFAULT;
|
|
if (copy_to_user(useraddr, &info, sizeof(info)))
|
|
goto out;
|
|
|
|
useraddr += offsetof(struct ethtool_sset_info, data);
|
|
if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
|
|
goto out;
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
kfree(info_buf);
|
|
return ret;
|
|
}
|
|
|
|
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);
|
|
|
|
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;
|
|
|
|
return dev->ethtool_ops->set_rxnfc(dev, &info);
|
|
}
|
|
|
|
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)
|
|
{
|
|
struct ethtool_rxfh_indir *indir;
|
|
u32 table_size;
|
|
size_t full_size;
|
|
int ret;
|
|
|
|
if (!dev->ethtool_ops->get_rxfh_indir)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&table_size,
|
|
useraddr + offsetof(struct ethtool_rxfh_indir, size),
|
|
sizeof(table_size)))
|
|
return -EFAULT;
|
|
|
|
if (table_size >
|
|
(KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
|
|
return -ENOMEM;
|
|
full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
|
|
indir = kzalloc(full_size, GFP_USER);
|
|
if (!indir)
|
|
return -ENOMEM;
|
|
|
|
indir->cmd = ETHTOOL_GRXFHINDIR;
|
|
indir->size = table_size;
|
|
ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (copy_to_user(useraddr, indir, full_size))
|
|
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_rxfh_indir *indir;
|
|
u32 table_size;
|
|
size_t full_size;
|
|
int ret;
|
|
|
|
if (!dev->ethtool_ops->set_rxfh_indir)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&table_size,
|
|
useraddr + offsetof(struct ethtool_rxfh_indir, size),
|
|
sizeof(table_size)))
|
|
return -EFAULT;
|
|
|
|
if (table_size >
|
|
(KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
|
|
return -ENOMEM;
|
|
full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
|
|
indir = kmalloc(full_size, GFP_USER);
|
|
if (!indir)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(indir, useraddr, full_size)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
ret = dev->ethtool_ops->set_rxfh_indir(dev, indir);
|
|
|
|
out:
|
|
kfree(indir);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* ethtool does not (or did not) set masks for flow parameters that are
|
|
* not specified, so if both value and mask are 0 then this must be
|
|
* treated as equivalent to a mask with all bits set. Implement that
|
|
* here rather than in drivers.
|
|
*/
|
|
static void rx_ntuple_fix_masks(struct ethtool_rx_ntuple_flow_spec *fs)
|
|
{
|
|
struct ethtool_tcpip4_spec *entry = &fs->h_u.tcp_ip4_spec;
|
|
struct ethtool_tcpip4_spec *mask = &fs->m_u.tcp_ip4_spec;
|
|
|
|
if (fs->flow_type != TCP_V4_FLOW &&
|
|
fs->flow_type != UDP_V4_FLOW &&
|
|
fs->flow_type != SCTP_V4_FLOW)
|
|
return;
|
|
|
|
if (!(entry->ip4src | mask->ip4src))
|
|
mask->ip4src = htonl(0xffffffff);
|
|
if (!(entry->ip4dst | mask->ip4dst))
|
|
mask->ip4dst = htonl(0xffffffff);
|
|
if (!(entry->psrc | mask->psrc))
|
|
mask->psrc = htons(0xffff);
|
|
if (!(entry->pdst | mask->pdst))
|
|
mask->pdst = htons(0xffff);
|
|
if (!(entry->tos | mask->tos))
|
|
mask->tos = 0xff;
|
|
if (!(fs->vlan_tag | fs->vlan_tag_mask))
|
|
fs->vlan_tag_mask = 0xffff;
|
|
if (!(fs->data | fs->data_mask))
|
|
fs->data_mask = 0xffffffffffffffffULL;
|
|
}
|
|
|
|
static noinline_for_stack 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;
|
|
|
|
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;
|
|
|
|
rx_ntuple_fix_masks(&cmd.fs);
|
|
|
|
return ops->set_rx_ntuple(dev, &cmd);
|
|
}
|
|
|
|
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_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_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 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_set_sg(struct net_device *dev, u32 data)
|
|
{
|
|
int err;
|
|
|
|
if (!dev->ethtool_ops->set_sg)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (data && !(dev->features & NETIF_F_ALL_CSUM))
|
|
return -EINVAL;
|
|
|
|
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, u32 data)
|
|
{
|
|
int err;
|
|
|
|
if (!dev->ethtool_ops->set_tx_csum)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!data && dev->ethtool_ops->set_sg) {
|
|
err = __ethtool_set_sg(dev, 0);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return dev->ethtool_ops->set_tx_csum(dev, data);
|
|
}
|
|
|
|
static int __ethtool_set_rx_csum(struct net_device *dev, u32 data)
|
|
{
|
|
if (!dev->ethtool_ops->set_rx_csum)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!data)
|
|
dev->features &= ~NETIF_F_GRO;
|
|
|
|
return dev->ethtool_ops->set_rx_csum(dev, data);
|
|
}
|
|
|
|
static int __ethtool_set_tso(struct net_device *dev, u32 data)
|
|
{
|
|
if (!dev->ethtool_ops->set_tso)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (data && !(dev->features & NETIF_F_SG))
|
|
return -EINVAL;
|
|
|
|
return dev->ethtool_ops->set_tso(dev, data);
|
|
}
|
|
|
|
static int __ethtool_set_ufo(struct net_device *dev, u32 data)
|
|
{
|
|
if (!dev->ethtool_ops->set_ufo)
|
|
return -EOPNOTSUPP;
|
|
if (data && !(dev->features & NETIF_F_SG))
|
|
return -EINVAL;
|
|
if (data && !((dev->features & NETIF_F_GEN_CSUM) ||
|
|
(dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
|
|
== (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)))
|
|
return -EINVAL;
|
|
return dev->ethtool_ops->set_ufo(dev, data);
|
|
}
|
|
|
|
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;
|
|
int rc;
|
|
|
|
if (!dev->ethtool_ops->set_phys_id)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (busy)
|
|
return -EBUSY;
|
|
|
|
if (copy_from_user(&id, useraddr, sizeof(id)))
|
|
return -EFAULT;
|
|
|
|
rc = dev->ethtool_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 = dev->ethtool_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)dev->ethtool_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;
|
|
|
|
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 (!dev->ethtool_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 (!dev->ethtool_ops->get_dump_data ||
|
|
!dev->ethtool_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 = (tmp.len > dump.len) ? dump.len : tmp.len;
|
|
if (!len)
|
|
return -EFAULT;
|
|
|
|
data = vzalloc(tmp.len);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
ret = ops->get_dump_data(dev, &dump, data);
|
|
if (ret)
|
|
goto out;
|
|
|
|
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;
|
|
}
|
|
|
|
/* 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;
|
|
u32 old_features;
|
|
|
|
if (!dev || !netif_device_present(dev))
|
|
return -ENODEV;
|
|
|
|
if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
|
|
return -EFAULT;
|
|
|
|
if (!dev->ethtool_ops) {
|
|
/* ETHTOOL_GDRVINFO does not require any driver support.
|
|
* It is also unprivileged and does not change anything,
|
|
* so we can take a shortcut to it. */
|
|
if (ethcmd == ETHTOOL_GDRVINFO)
|
|
return ethtool_get_drvinfo(dev, useraddr);
|
|
else
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/* Allow some commands to be done by anyone */
|
|
switch (ethcmd) {
|
|
case ETHTOOL_GSET:
|
|
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_GGRO:
|
|
case ETHTOOL_GFLAGS:
|
|
case ETHTOOL_GPFLAGS:
|
|
case ETHTOOL_GRXFH:
|
|
case ETHTOOL_GRXRINGS:
|
|
case ETHTOOL_GRXCLSRLCNT:
|
|
case ETHTOOL_GRXCLSRULE:
|
|
case ETHTOOL_GRXCLSRLALL:
|
|
case ETHTOOL_GFEATURES:
|
|
break;
|
|
default:
|
|
if (!capable(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_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,
|
|
(dev->ethtool_ops->get_flags ?
|
|
dev->ethtool_ops->get_flags :
|
|
ethtool_op_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_SRXNTUPLE:
|
|
rc = ethtool_set_rx_ntuple(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;
|
|
default:
|
|
rc = -EOPNOTSUPP;
|
|
}
|
|
|
|
if (dev->ethtool_ops->complete)
|
|
dev->ethtool_ops->complete(dev);
|
|
|
|
if (old_features != dev->features)
|
|
netdev_features_change(dev);
|
|
|
|
return rc;
|
|
}
|