mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 12:34:55 +07:00
266a164684
The commit 3de0b59239 ("ethtool: Support for configurable RSS hash
key") introduced a new function ethtool_copy_validate_indir() with
full iteration of the loop to validate the ring indices, which could
be an overkill. To minimize the impact, we ought to exit the loop as
soon as the invalid index occurs for the very first time. The
remaining loop simply doesn't serve any more purpose.
Signed-off-by: Jean Sacren <sakiwit@gmail.com>
Cc: Venkata Duvvuru <VenkatKumar.Duvvuru@Emulex.Com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1886 lines
45 KiB
C
1886 lines
45 KiB
C
/*
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* net/core/ethtool.c - Ethtool ioctl handler
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* Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
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*
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* This file is where we call all the ethtool_ops commands to get
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* the information ethtool needs.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/capability.h>
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#include <linux/errno.h>
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#include <linux/ethtool.h>
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#include <linux/netdevice.h>
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#include <linux/net_tstamp.h>
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#include <linux/phy.h>
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#include <linux/bitops.h>
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#include <linux/uaccess.h>
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#include <linux/vmalloc.h>
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#include <linux/slab.h>
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#include <linux/rtnetlink.h>
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#include <linux/sched.h>
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/*
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* Some useful ethtool_ops methods that're device independent.
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* If we find that all drivers want to do the same thing here,
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* we can turn these into dev_() function calls.
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*/
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u32 ethtool_op_get_link(struct net_device *dev)
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{
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return netif_carrier_ok(dev) ? 1 : 0;
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}
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EXPORT_SYMBOL(ethtool_op_get_link);
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int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
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{
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info->so_timestamping =
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SOF_TIMESTAMPING_TX_SOFTWARE |
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SOF_TIMESTAMPING_RX_SOFTWARE |
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SOF_TIMESTAMPING_SOFTWARE;
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info->phc_index = -1;
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return 0;
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}
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EXPORT_SYMBOL(ethtool_op_get_ts_info);
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/* Handlers for each ethtool command */
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#define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
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static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
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[NETIF_F_SG_BIT] = "tx-scatter-gather",
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[NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
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[NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic",
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[NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6",
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[NETIF_F_HIGHDMA_BIT] = "highdma",
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[NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist",
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[NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert",
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[NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse",
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[NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
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[NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert",
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[NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse",
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[NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter",
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[NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged",
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[NETIF_F_GSO_BIT] = "tx-generic-segmentation",
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[NETIF_F_LLTX_BIT] = "tx-lockless",
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[NETIF_F_NETNS_LOCAL_BIT] = "netns-local",
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[NETIF_F_GRO_BIT] = "rx-gro",
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[NETIF_F_LRO_BIT] = "rx-lro",
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[NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
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[NETIF_F_UFO_BIT] = "tx-udp-fragmentation",
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[NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
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[NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
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[NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
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[NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
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[NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
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[NETIF_F_GSO_IPIP_BIT] = "tx-ipip-segmentation",
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[NETIF_F_GSO_SIT_BIT] = "tx-sit-segmentation",
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[NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
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[NETIF_F_GSO_MPLS_BIT] = "tx-mpls-segmentation",
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[NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
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[NETIF_F_SCTP_CSUM_BIT] = "tx-checksum-sctp",
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[NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
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[NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
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[NETIF_F_RXHASH_BIT] = "rx-hashing",
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[NETIF_F_RXCSUM_BIT] = "rx-checksum",
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[NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
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[NETIF_F_LOOPBACK_BIT] = "loopback",
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[NETIF_F_RXFCS_BIT] = "rx-fcs",
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[NETIF_F_RXALL_BIT] = "rx-all",
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[NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
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[NETIF_F_BUSY_POLL_BIT] = "busy-poll",
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};
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static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
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{
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struct ethtool_gfeatures cmd = {
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.cmd = ETHTOOL_GFEATURES,
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.size = ETHTOOL_DEV_FEATURE_WORDS,
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};
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struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
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u32 __user *sizeaddr;
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u32 copy_size;
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int i;
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/* in case feature bits run out again */
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BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
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for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
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features[i].available = (u32)(dev->hw_features >> (32 * i));
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features[i].requested = (u32)(dev->wanted_features >> (32 * i));
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features[i].active = (u32)(dev->features >> (32 * i));
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features[i].never_changed =
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(u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
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}
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sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
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if (get_user(copy_size, sizeaddr))
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return -EFAULT;
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if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
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copy_size = ETHTOOL_DEV_FEATURE_WORDS;
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if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
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return -EFAULT;
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useraddr += sizeof(cmd);
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if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
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return -EFAULT;
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return 0;
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}
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static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
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{
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struct ethtool_sfeatures cmd;
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struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
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netdev_features_t wanted = 0, valid = 0;
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int i, ret = 0;
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if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
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return -EFAULT;
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useraddr += sizeof(cmd);
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if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
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return -EINVAL;
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if (copy_from_user(features, useraddr, sizeof(features)))
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return -EFAULT;
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for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
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valid |= (netdev_features_t)features[i].valid << (32 * i);
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wanted |= (netdev_features_t)features[i].requested << (32 * i);
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}
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if (valid & ~NETIF_F_ETHTOOL_BITS)
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return -EINVAL;
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if (valid & ~dev->hw_features) {
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valid &= dev->hw_features;
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ret |= ETHTOOL_F_UNSUPPORTED;
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}
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dev->wanted_features &= ~valid;
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dev->wanted_features |= wanted & valid;
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__netdev_update_features(dev);
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if ((dev->wanted_features ^ dev->features) & valid)
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ret |= ETHTOOL_F_WISH;
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return ret;
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}
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static int __ethtool_get_sset_count(struct net_device *dev, int sset)
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{
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const struct ethtool_ops *ops = dev->ethtool_ops;
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if (sset == ETH_SS_FEATURES)
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return ARRAY_SIZE(netdev_features_strings);
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if (ops->get_sset_count && ops->get_strings)
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return ops->get_sset_count(dev, sset);
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else
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return -EOPNOTSUPP;
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}
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static void __ethtool_get_strings(struct net_device *dev,
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u32 stringset, u8 *data)
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{
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const struct ethtool_ops *ops = dev->ethtool_ops;
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if (stringset == ETH_SS_FEATURES)
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memcpy(data, netdev_features_strings,
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sizeof(netdev_features_strings));
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else
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/* ops->get_strings is valid because checked earlier */
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ops->get_strings(dev, stringset, data);
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}
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static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
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{
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/* feature masks of legacy discrete ethtool ops */
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switch (eth_cmd) {
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case ETHTOOL_GTXCSUM:
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case ETHTOOL_STXCSUM:
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return NETIF_F_ALL_CSUM | NETIF_F_SCTP_CSUM;
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case ETHTOOL_GRXCSUM:
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case ETHTOOL_SRXCSUM:
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return NETIF_F_RXCSUM;
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case ETHTOOL_GSG:
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case ETHTOOL_SSG:
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return NETIF_F_SG;
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case ETHTOOL_GTSO:
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case ETHTOOL_STSO:
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return NETIF_F_ALL_TSO;
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case ETHTOOL_GUFO:
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case ETHTOOL_SUFO:
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return NETIF_F_UFO;
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case ETHTOOL_GGSO:
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case ETHTOOL_SGSO:
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return NETIF_F_GSO;
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case ETHTOOL_GGRO:
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case ETHTOOL_SGRO:
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return NETIF_F_GRO;
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default:
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BUG();
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}
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}
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static int ethtool_get_one_feature(struct net_device *dev,
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char __user *useraddr, u32 ethcmd)
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{
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netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
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struct ethtool_value edata = {
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.cmd = ethcmd,
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.data = !!(dev->features & mask),
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};
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if (copy_to_user(useraddr, &edata, sizeof(edata)))
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return -EFAULT;
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return 0;
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}
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static int ethtool_set_one_feature(struct net_device *dev,
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void __user *useraddr, u32 ethcmd)
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{
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struct ethtool_value edata;
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netdev_features_t mask;
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if (copy_from_user(&edata, useraddr, sizeof(edata)))
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return -EFAULT;
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mask = ethtool_get_feature_mask(ethcmd);
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mask &= dev->hw_features;
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if (!mask)
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return -EOPNOTSUPP;
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if (edata.data)
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dev->wanted_features |= mask;
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else
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dev->wanted_features &= ~mask;
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__netdev_update_features(dev);
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return 0;
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}
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#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
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ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
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#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
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NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
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NETIF_F_RXHASH)
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static u32 __ethtool_get_flags(struct net_device *dev)
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{
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u32 flags = 0;
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if (dev->features & NETIF_F_LRO)
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flags |= ETH_FLAG_LRO;
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if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
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flags |= ETH_FLAG_RXVLAN;
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if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
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flags |= ETH_FLAG_TXVLAN;
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if (dev->features & NETIF_F_NTUPLE)
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flags |= ETH_FLAG_NTUPLE;
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if (dev->features & NETIF_F_RXHASH)
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flags |= ETH_FLAG_RXHASH;
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return flags;
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}
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static int __ethtool_set_flags(struct net_device *dev, u32 data)
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{
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netdev_features_t features = 0, changed;
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if (data & ~ETH_ALL_FLAGS)
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return -EINVAL;
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if (data & ETH_FLAG_LRO)
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features |= NETIF_F_LRO;
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if (data & ETH_FLAG_RXVLAN)
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features |= NETIF_F_HW_VLAN_CTAG_RX;
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if (data & ETH_FLAG_TXVLAN)
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features |= NETIF_F_HW_VLAN_CTAG_TX;
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if (data & ETH_FLAG_NTUPLE)
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features |= NETIF_F_NTUPLE;
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if (data & ETH_FLAG_RXHASH)
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features |= NETIF_F_RXHASH;
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/* allow changing only bits set in hw_features */
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changed = (features ^ dev->features) & ETH_ALL_FEATURES;
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if (changed & ~dev->hw_features)
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return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
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dev->wanted_features =
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(dev->wanted_features & ~changed) | (features & changed);
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__netdev_update_features(dev);
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return 0;
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}
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int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
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{
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ASSERT_RTNL();
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if (!dev->ethtool_ops->get_settings)
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return -EOPNOTSUPP;
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memset(cmd, 0, sizeof(struct ethtool_cmd));
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cmd->cmd = ETHTOOL_GSET;
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return dev->ethtool_ops->get_settings(dev, cmd);
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}
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EXPORT_SYMBOL(__ethtool_get_settings);
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static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
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{
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int err;
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struct ethtool_cmd cmd;
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err = __ethtool_get_settings(dev, &cmd);
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if (err < 0)
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return err;
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if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
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return -EFAULT;
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return 0;
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}
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static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
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{
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struct ethtool_cmd cmd;
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if (!dev->ethtool_ops->set_settings)
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return -EOPNOTSUPP;
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if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
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return -EFAULT;
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return dev->ethtool_ops->set_settings(dev, &cmd);
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}
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static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
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void __user *useraddr)
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{
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struct ethtool_drvinfo info;
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const struct ethtool_ops *ops = dev->ethtool_ops;
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memset(&info, 0, sizeof(info));
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info.cmd = ETHTOOL_GDRVINFO;
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if (ops->get_drvinfo) {
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ops->get_drvinfo(dev, &info);
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} else if (dev->dev.parent && dev->dev.parent->driver) {
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strlcpy(info.bus_info, dev_name(dev->dev.parent),
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sizeof(info.bus_info));
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strlcpy(info.driver, dev->dev.parent->driver->name,
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sizeof(info.driver));
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} else {
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return -EOPNOTSUPP;
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}
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/*
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* this method of obtaining string set info is deprecated;
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* Use ETHTOOL_GSSET_INFO instead.
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*/
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if (ops->get_sset_count) {
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int rc;
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rc = ops->get_sset_count(dev, ETH_SS_TEST);
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if (rc >= 0)
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info.testinfo_len = rc;
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rc = ops->get_sset_count(dev, ETH_SS_STATS);
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if (rc >= 0)
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info.n_stats = rc;
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rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
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if (rc >= 0)
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info.n_priv_flags = rc;
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}
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if (ops->get_regs_len)
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info.regdump_len = ops->get_regs_len(dev);
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if (ops->get_eeprom_len)
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info.eedump_len = ops->get_eeprom_len(dev);
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if (copy_to_user(useraddr, &info, sizeof(info)))
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return -EFAULT;
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return 0;
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}
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static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
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void __user *useraddr)
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{
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struct ethtool_sset_info info;
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u64 sset_mask;
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int i, idx = 0, n_bits = 0, ret, rc;
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u32 *info_buf = NULL;
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if (copy_from_user(&info, useraddr, sizeof(info)))
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return -EFAULT;
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/* store copy of mask, because we zero struct later on */
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sset_mask = info.sset_mask;
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if (!sset_mask)
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return 0;
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/* calculate size of return buffer */
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n_bits = hweight64(sset_mask);
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memset(&info, 0, sizeof(info));
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info.cmd = ETHTOOL_GSSET_INFO;
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info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
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if (!info_buf)
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return -ENOMEM;
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/*
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* fill return buffer based on input bitmask and successful
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* get_sset_count return
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*/
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for (i = 0; i < 64; i++) {
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if (!(sset_mask & (1ULL << i)))
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continue;
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rc = __ethtool_get_sset_count(dev, i);
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if (rc >= 0) {
|
|
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);
|
|
int rc;
|
|
|
|
if (!dev->ethtool_ops->set_rxnfc)
|
|
return -EOPNOTSUPP;
|
|
|
|
/* struct ethtool_rxnfc was originally defined for
|
|
* ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
|
|
* members. User-space might still be using that
|
|
* definition. */
|
|
if (cmd == ETHTOOL_SRXFH)
|
|
info_size = (offsetof(struct ethtool_rxnfc, data) +
|
|
sizeof(info.data));
|
|
|
|
if (copy_from_user(&info, useraddr, info_size))
|
|
return -EFAULT;
|
|
|
|
rc = dev->ethtool_ops->set_rxnfc(dev, &info);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (cmd == ETHTOOL_SRXCLSRLINS &&
|
|
copy_to_user(useraddr, &info, info_size))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
|
|
u32 cmd, void __user *useraddr)
|
|
{
|
|
struct ethtool_rxnfc info;
|
|
size_t info_size = sizeof(info);
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
int ret;
|
|
void *rule_buf = NULL;
|
|
|
|
if (!ops->get_rxnfc)
|
|
return -EOPNOTSUPP;
|
|
|
|
/* struct ethtool_rxnfc was originally defined for
|
|
* ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
|
|
* members. User-space might still be using that
|
|
* definition. */
|
|
if (cmd == ETHTOOL_GRXFH)
|
|
info_size = (offsetof(struct ethtool_rxnfc, data) +
|
|
sizeof(info.data));
|
|
|
|
if (copy_from_user(&info, useraddr, info_size))
|
|
return -EFAULT;
|
|
|
|
if (info.cmd == ETHTOOL_GRXCLSRLALL) {
|
|
if (info.rule_cnt > 0) {
|
|
if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
|
|
rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
|
|
GFP_USER);
|
|
if (!rule_buf)
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
|
|
ret = ops->get_rxnfc(dev, &info, rule_buf);
|
|
if (ret < 0)
|
|
goto err_out;
|
|
|
|
ret = -EFAULT;
|
|
if (copy_to_user(useraddr, &info, info_size))
|
|
goto err_out;
|
|
|
|
if (rule_buf) {
|
|
useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
|
|
if (copy_to_user(useraddr, rule_buf,
|
|
info.rule_cnt * sizeof(u32)))
|
|
goto err_out;
|
|
}
|
|
ret = 0;
|
|
|
|
err_out:
|
|
kfree(rule_buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
|
|
struct ethtool_rxnfc *rx_rings,
|
|
u32 size)
|
|
{
|
|
int ret = 0, i;
|
|
|
|
if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
|
|
ret = -EFAULT;
|
|
|
|
/* Validate ring indices */
|
|
for (i = 0; i < size; i++) {
|
|
if (indir[i] >= rx_rings->data) {
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
u32 user_size, dev_size;
|
|
u32 *indir;
|
|
int ret;
|
|
|
|
if (!dev->ethtool_ops->get_rxfh_indir_size ||
|
|
!dev->ethtool_ops->get_rxfh_indir)
|
|
return -EOPNOTSUPP;
|
|
dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
|
|
if (dev_size == 0)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&user_size,
|
|
useraddr + offsetof(struct ethtool_rxfh_indir, size),
|
|
sizeof(user_size)))
|
|
return -EFAULT;
|
|
|
|
if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
|
|
&dev_size, sizeof(dev_size)))
|
|
return -EFAULT;
|
|
|
|
/* If the user buffer size is 0, this is just a query for the
|
|
* device table size. Otherwise, if it's smaller than the
|
|
* device table size it's an error.
|
|
*/
|
|
if (user_size < dev_size)
|
|
return user_size == 0 ? 0 : -EINVAL;
|
|
|
|
indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
|
|
if (!indir)
|
|
return -ENOMEM;
|
|
|
|
ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (copy_to_user(useraddr +
|
|
offsetof(struct ethtool_rxfh_indir, ring_index[0]),
|
|
indir, dev_size * sizeof(indir[0])))
|
|
ret = -EFAULT;
|
|
|
|
out:
|
|
kfree(indir);
|
|
return ret;
|
|
}
|
|
|
|
static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
struct ethtool_rxnfc rx_rings;
|
|
u32 user_size, dev_size, i;
|
|
u32 *indir;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
int ret;
|
|
u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
|
|
|
|
if (!ops->get_rxfh_indir_size || !ops->set_rxfh_indir ||
|
|
!ops->get_rxnfc)
|
|
return -EOPNOTSUPP;
|
|
|
|
dev_size = ops->get_rxfh_indir_size(dev);
|
|
if (dev_size == 0)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&user_size,
|
|
useraddr + offsetof(struct ethtool_rxfh_indir, size),
|
|
sizeof(user_size)))
|
|
return -EFAULT;
|
|
|
|
if (user_size != 0 && user_size != dev_size)
|
|
return -EINVAL;
|
|
|
|
indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
|
|
if (!indir)
|
|
return -ENOMEM;
|
|
|
|
rx_rings.cmd = ETHTOOL_GRXRINGS;
|
|
ret = ops->get_rxnfc(dev, &rx_rings, NULL);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (user_size == 0) {
|
|
for (i = 0; i < dev_size; i++)
|
|
indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
|
|
} else {
|
|
ret = ethtool_copy_validate_indir(indir,
|
|
useraddr + ringidx_offset,
|
|
&rx_rings,
|
|
dev_size);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
|
|
ret = ops->set_rxfh_indir(dev, indir);
|
|
|
|
out:
|
|
kfree(indir);
|
|
return ret;
|
|
}
|
|
|
|
static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
int ret;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
u32 user_indir_size = 0, user_key_size = 0;
|
|
u32 dev_indir_size = 0, dev_key_size = 0;
|
|
u32 total_size;
|
|
u32 indir_offset, indir_bytes;
|
|
u32 key_offset;
|
|
u32 *indir = NULL;
|
|
u8 *hkey = NULL;
|
|
u8 *rss_config;
|
|
|
|
if (!(dev->ethtool_ops->get_rxfh_indir_size ||
|
|
dev->ethtool_ops->get_rxfh_key_size) ||
|
|
!dev->ethtool_ops->get_rxfh)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (ops->get_rxfh_indir_size)
|
|
dev_indir_size = ops->get_rxfh_indir_size(dev);
|
|
|
|
indir_offset = offsetof(struct ethtool_rxfh, indir_size);
|
|
|
|
if (copy_from_user(&user_indir_size,
|
|
useraddr + indir_offset,
|
|
sizeof(user_indir_size)))
|
|
return -EFAULT;
|
|
|
|
if (copy_to_user(useraddr + indir_offset,
|
|
&dev_indir_size, sizeof(dev_indir_size)))
|
|
return -EFAULT;
|
|
|
|
if (ops->get_rxfh_key_size)
|
|
dev_key_size = ops->get_rxfh_key_size(dev);
|
|
|
|
if ((dev_key_size + dev_indir_size) == 0)
|
|
return -EOPNOTSUPP;
|
|
|
|
key_offset = offsetof(struct ethtool_rxfh, key_size);
|
|
|
|
if (copy_from_user(&user_key_size,
|
|
useraddr + key_offset,
|
|
sizeof(user_key_size)))
|
|
return -EFAULT;
|
|
|
|
if (copy_to_user(useraddr + key_offset,
|
|
&dev_key_size, sizeof(dev_key_size)))
|
|
return -EFAULT;
|
|
|
|
/* If the user buffer size is 0, this is just a query for the
|
|
* device table size and key size. Otherwise, if the User size is
|
|
* not equal to device table size or key size it's an error.
|
|
*/
|
|
if (!user_indir_size && !user_key_size)
|
|
return 0;
|
|
|
|
if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
|
|
(user_key_size && (user_key_size != dev_key_size)))
|
|
return -EINVAL;
|
|
|
|
indir_bytes = user_indir_size * sizeof(indir[0]);
|
|
total_size = indir_bytes + user_key_size;
|
|
rss_config = kzalloc(total_size, GFP_USER);
|
|
if (!rss_config)
|
|
return -ENOMEM;
|
|
|
|
if (user_indir_size)
|
|
indir = (u32 *)rss_config;
|
|
|
|
if (user_key_size)
|
|
hkey = rss_config + indir_bytes;
|
|
|
|
ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey);
|
|
if (!ret) {
|
|
if (copy_to_user(useraddr +
|
|
offsetof(struct ethtool_rxfh, rss_config[0]),
|
|
rss_config, total_size))
|
|
ret = -EFAULT;
|
|
}
|
|
|
|
kfree(rss_config);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
int ret;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
struct ethtool_rxnfc rx_rings;
|
|
u32 user_indir_size = 0, dev_indir_size = 0, i;
|
|
u32 user_key_size = 0, dev_key_size = 0;
|
|
u32 *indir = NULL, indir_bytes = 0;
|
|
u8 *hkey = NULL;
|
|
u8 *rss_config;
|
|
u32 indir_offset, key_offset;
|
|
u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
|
|
|
|
if (!(ops->get_rxfh_indir_size || ops->get_rxfh_key_size) ||
|
|
!ops->get_rxnfc || !ops->set_rxfh)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (ops->get_rxfh_indir_size)
|
|
dev_indir_size = ops->get_rxfh_indir_size(dev);
|
|
|
|
indir_offset = offsetof(struct ethtool_rxfh, indir_size);
|
|
if (copy_from_user(&user_indir_size,
|
|
useraddr + indir_offset,
|
|
sizeof(user_indir_size)))
|
|
return -EFAULT;
|
|
|
|
if (ops->get_rxfh_key_size)
|
|
dev_key_size = dev->ethtool_ops->get_rxfh_key_size(dev);
|
|
|
|
if ((dev_key_size + dev_indir_size) == 0)
|
|
return -EOPNOTSUPP;
|
|
|
|
key_offset = offsetof(struct ethtool_rxfh, key_size);
|
|
if (copy_from_user(&user_key_size,
|
|
useraddr + key_offset,
|
|
sizeof(user_key_size)))
|
|
return -EFAULT;
|
|
|
|
/* If either indir or hash key is valid, proceed further.
|
|
*/
|
|
if ((user_indir_size && ((user_indir_size != 0xDEADBEEF) &&
|
|
user_indir_size != dev_indir_size)) ||
|
|
(user_key_size && (user_key_size != dev_key_size)))
|
|
return -EINVAL;
|
|
|
|
if (user_indir_size != 0xDEADBEEF)
|
|
indir_bytes = dev_indir_size * sizeof(indir[0]);
|
|
|
|
rss_config = kzalloc(indir_bytes + user_key_size, GFP_USER);
|
|
if (!rss_config)
|
|
return -ENOMEM;
|
|
|
|
rx_rings.cmd = ETHTOOL_GRXRINGS;
|
|
ret = ops->get_rxnfc(dev, &rx_rings, NULL);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* user_indir_size == 0 means reset the indir table to default.
|
|
* user_indir_size == 0xDEADBEEF means indir setting is not requested.
|
|
*/
|
|
if (user_indir_size && user_indir_size != 0xDEADBEEF) {
|
|
indir = (u32 *)rss_config;
|
|
ret = ethtool_copy_validate_indir(indir,
|
|
useraddr + rss_cfg_offset,
|
|
&rx_rings,
|
|
user_indir_size);
|
|
if (ret)
|
|
goto out;
|
|
} else if (user_indir_size == 0) {
|
|
indir = (u32 *)rss_config;
|
|
for (i = 0; i < dev_indir_size; i++)
|
|
indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
|
|
}
|
|
|
|
if (user_key_size) {
|
|
hkey = rss_config + indir_bytes;
|
|
if (copy_from_user(hkey,
|
|
useraddr + rss_cfg_offset + indir_bytes,
|
|
user_key_size)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
ret = ops->set_rxfh(dev, indir, hkey);
|
|
|
|
out:
|
|
kfree(rss_config);
|
|
return ret;
|
|
}
|
|
|
|
static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
|
|
{
|
|
struct ethtool_regs regs;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
void *regbuf;
|
|
int reglen, ret;
|
|
|
|
if (!ops->get_regs || !ops->get_regs_len)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(®s, useraddr, sizeof(regs)))
|
|
return -EFAULT;
|
|
|
|
reglen = ops->get_regs_len(dev);
|
|
if (regs.len > reglen)
|
|
regs.len = reglen;
|
|
|
|
regbuf = vzalloc(reglen);
|
|
if (reglen && !regbuf)
|
|
return -ENOMEM;
|
|
|
|
ops->get_regs(dev, ®s, regbuf);
|
|
|
|
ret = -EFAULT;
|
|
if (copy_to_user(useraddr, ®s, sizeof(regs)))
|
|
goto out;
|
|
useraddr += offsetof(struct ethtool_regs, data);
|
|
if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
|
|
goto out;
|
|
ret = 0;
|
|
|
|
out:
|
|
vfree(regbuf);
|
|
return ret;
|
|
}
|
|
|
|
static int ethtool_reset(struct net_device *dev, char __user *useraddr)
|
|
{
|
|
struct ethtool_value reset;
|
|
int ret;
|
|
|
|
if (!dev->ethtool_ops->reset)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&reset, useraddr, sizeof(reset)))
|
|
return -EFAULT;
|
|
|
|
ret = dev->ethtool_ops->reset(dev, &reset.data);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (copy_to_user(useraddr, &reset, sizeof(reset)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
|
|
{
|
|
struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
|
|
|
|
if (!dev->ethtool_ops->get_wol)
|
|
return -EOPNOTSUPP;
|
|
|
|
dev->ethtool_ops->get_wol(dev, &wol);
|
|
|
|
if (copy_to_user(useraddr, &wol, sizeof(wol)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
|
|
{
|
|
struct ethtool_wolinfo wol;
|
|
|
|
if (!dev->ethtool_ops->set_wol)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&wol, useraddr, sizeof(wol)))
|
|
return -EFAULT;
|
|
|
|
return dev->ethtool_ops->set_wol(dev, &wol);
|
|
}
|
|
|
|
static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
|
|
{
|
|
struct ethtool_eee edata;
|
|
int rc;
|
|
|
|
if (!dev->ethtool_ops->get_eee)
|
|
return -EOPNOTSUPP;
|
|
|
|
memset(&edata, 0, sizeof(struct ethtool_eee));
|
|
edata.cmd = ETHTOOL_GEEE;
|
|
rc = dev->ethtool_ops->get_eee(dev, &edata);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (copy_to_user(useraddr, &edata, sizeof(edata)))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
|
|
{
|
|
struct ethtool_eee edata;
|
|
|
|
if (!dev->ethtool_ops->set_eee)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&edata, useraddr, sizeof(edata)))
|
|
return -EFAULT;
|
|
|
|
return dev->ethtool_ops->set_eee(dev, &edata);
|
|
}
|
|
|
|
static int ethtool_nway_reset(struct net_device *dev)
|
|
{
|
|
if (!dev->ethtool_ops->nway_reset)
|
|
return -EOPNOTSUPP;
|
|
|
|
return dev->ethtool_ops->nway_reset(dev);
|
|
}
|
|
|
|
static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
|
|
{
|
|
struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
|
|
|
|
if (!dev->ethtool_ops->get_link)
|
|
return -EOPNOTSUPP;
|
|
|
|
edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
|
|
|
|
if (copy_to_user(useraddr, &edata, sizeof(edata)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
|
|
int (*getter)(struct net_device *,
|
|
struct ethtool_eeprom *, u8 *),
|
|
u32 total_len)
|
|
{
|
|
struct ethtool_eeprom eeprom;
|
|
void __user *userbuf = useraddr + sizeof(eeprom);
|
|
u32 bytes_remaining;
|
|
u8 *data;
|
|
int ret = 0;
|
|
|
|
if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
|
|
return -EFAULT;
|
|
|
|
/* Check for wrap and zero */
|
|
if (eeprom.offset + eeprom.len <= eeprom.offset)
|
|
return -EINVAL;
|
|
|
|
/* Check for exceeding total eeprom len */
|
|
if (eeprom.offset + eeprom.len > total_len)
|
|
return -EINVAL;
|
|
|
|
data = kmalloc(PAGE_SIZE, GFP_USER);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
bytes_remaining = eeprom.len;
|
|
while (bytes_remaining > 0) {
|
|
eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
|
|
|
|
ret = getter(dev, &eeprom, data);
|
|
if (ret)
|
|
break;
|
|
if (copy_to_user(userbuf, data, eeprom.len)) {
|
|
ret = -EFAULT;
|
|
break;
|
|
}
|
|
userbuf += eeprom.len;
|
|
eeprom.offset += eeprom.len;
|
|
bytes_remaining -= eeprom.len;
|
|
}
|
|
|
|
eeprom.len = userbuf - (useraddr + sizeof(eeprom));
|
|
eeprom.offset -= eeprom.len;
|
|
if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
|
|
ret = -EFAULT;
|
|
|
|
kfree(data);
|
|
return ret;
|
|
}
|
|
|
|
static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
|
|
if (!ops->get_eeprom || !ops->get_eeprom_len)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
|
|
ops->get_eeprom_len(dev));
|
|
}
|
|
|
|
static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_eeprom eeprom;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
void __user *userbuf = useraddr + sizeof(eeprom);
|
|
u32 bytes_remaining;
|
|
u8 *data;
|
|
int ret = 0;
|
|
|
|
if (!ops->set_eeprom || !ops->get_eeprom_len)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
|
|
return -EFAULT;
|
|
|
|
/* Check for wrap and zero */
|
|
if (eeprom.offset + eeprom.len <= eeprom.offset)
|
|
return -EINVAL;
|
|
|
|
/* Check for exceeding total eeprom len */
|
|
if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
|
|
return -EINVAL;
|
|
|
|
data = kmalloc(PAGE_SIZE, GFP_USER);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
bytes_remaining = eeprom.len;
|
|
while (bytes_remaining > 0) {
|
|
eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
|
|
|
|
if (copy_from_user(data, userbuf, eeprom.len)) {
|
|
ret = -EFAULT;
|
|
break;
|
|
}
|
|
ret = ops->set_eeprom(dev, &eeprom, data);
|
|
if (ret)
|
|
break;
|
|
userbuf += eeprom.len;
|
|
eeprom.offset += eeprom.len;
|
|
bytes_remaining -= eeprom.len;
|
|
}
|
|
|
|
kfree(data);
|
|
return ret;
|
|
}
|
|
|
|
static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
|
|
|
|
if (!dev->ethtool_ops->get_coalesce)
|
|
return -EOPNOTSUPP;
|
|
|
|
dev->ethtool_ops->get_coalesce(dev, &coalesce);
|
|
|
|
if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
struct ethtool_coalesce coalesce;
|
|
|
|
if (!dev->ethtool_ops->set_coalesce)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
|
|
return -EFAULT;
|
|
|
|
return dev->ethtool_ops->set_coalesce(dev, &coalesce);
|
|
}
|
|
|
|
static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
|
|
|
|
if (!dev->ethtool_ops->get_ringparam)
|
|
return -EOPNOTSUPP;
|
|
|
|
dev->ethtool_ops->get_ringparam(dev, &ringparam);
|
|
|
|
if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_ringparam ringparam;
|
|
|
|
if (!dev->ethtool_ops->set_ringparam)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
|
|
return -EFAULT;
|
|
|
|
return dev->ethtool_ops->set_ringparam(dev, &ringparam);
|
|
}
|
|
|
|
static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
|
|
|
|
if (!dev->ethtool_ops->get_channels)
|
|
return -EOPNOTSUPP;
|
|
|
|
dev->ethtool_ops->get_channels(dev, &channels);
|
|
|
|
if (copy_to_user(useraddr, &channels, sizeof(channels)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
struct ethtool_channels channels;
|
|
|
|
if (!dev->ethtool_ops->set_channels)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&channels, useraddr, sizeof(channels)))
|
|
return -EFAULT;
|
|
|
|
return dev->ethtool_ops->set_channels(dev, &channels);
|
|
}
|
|
|
|
static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
|
|
|
|
if (!dev->ethtool_ops->get_pauseparam)
|
|
return -EOPNOTSUPP;
|
|
|
|
dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
|
|
|
|
if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_pauseparam pauseparam;
|
|
|
|
if (!dev->ethtool_ops->set_pauseparam)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
|
|
return -EFAULT;
|
|
|
|
return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
|
|
}
|
|
|
|
static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
|
|
{
|
|
struct ethtool_test test;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
u64 *data;
|
|
int ret, test_len;
|
|
|
|
if (!ops->self_test || !ops->get_sset_count)
|
|
return -EOPNOTSUPP;
|
|
|
|
test_len = ops->get_sset_count(dev, ETH_SS_TEST);
|
|
if (test_len < 0)
|
|
return test_len;
|
|
WARN_ON(test_len == 0);
|
|
|
|
if (copy_from_user(&test, useraddr, sizeof(test)))
|
|
return -EFAULT;
|
|
|
|
test.len = test_len;
|
|
data = kmalloc(test_len * sizeof(u64), GFP_USER);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
ops->self_test(dev, &test, data);
|
|
|
|
ret = -EFAULT;
|
|
if (copy_to_user(useraddr, &test, sizeof(test)))
|
|
goto out;
|
|
useraddr += sizeof(test);
|
|
if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
|
|
goto out;
|
|
ret = 0;
|
|
|
|
out:
|
|
kfree(data);
|
|
return ret;
|
|
}
|
|
|
|
static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_gstrings gstrings;
|
|
u8 *data;
|
|
int ret;
|
|
|
|
if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
|
|
return -EFAULT;
|
|
|
|
ret = __ethtool_get_sset_count(dev, gstrings.string_set);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
gstrings.len = ret;
|
|
|
|
data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
__ethtool_get_strings(dev, gstrings.string_set, data);
|
|
|
|
ret = -EFAULT;
|
|
if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
|
|
goto out;
|
|
useraddr += sizeof(gstrings);
|
|
if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
|
|
goto out;
|
|
ret = 0;
|
|
|
|
out:
|
|
kfree(data);
|
|
return ret;
|
|
}
|
|
|
|
static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_value id;
|
|
static bool busy;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
int rc;
|
|
|
|
if (!ops->set_phys_id)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (busy)
|
|
return -EBUSY;
|
|
|
|
if (copy_from_user(&id, useraddr, sizeof(id)))
|
|
return -EFAULT;
|
|
|
|
rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
/* Drop the RTNL lock while waiting, but prevent reentry or
|
|
* removal of the device.
|
|
*/
|
|
busy = true;
|
|
dev_hold(dev);
|
|
rtnl_unlock();
|
|
|
|
if (rc == 0) {
|
|
/* Driver will handle this itself */
|
|
schedule_timeout_interruptible(
|
|
id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
|
|
} else {
|
|
/* Driver expects to be called at twice the frequency in rc */
|
|
int n = rc * 2, i, interval = HZ / n;
|
|
|
|
/* Count down seconds */
|
|
do {
|
|
/* Count down iterations per second */
|
|
i = n;
|
|
do {
|
|
rtnl_lock();
|
|
rc = ops->set_phys_id(dev,
|
|
(i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
|
|
rtnl_unlock();
|
|
if (rc)
|
|
break;
|
|
schedule_timeout_interruptible(interval);
|
|
} while (!signal_pending(current) && --i != 0);
|
|
} while (!signal_pending(current) &&
|
|
(id.data == 0 || --id.data != 0));
|
|
}
|
|
|
|
rtnl_lock();
|
|
dev_put(dev);
|
|
busy = false;
|
|
|
|
(void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
|
|
return rc;
|
|
}
|
|
|
|
static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_stats stats;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
u64 *data;
|
|
int ret, n_stats;
|
|
|
|
if (!ops->get_ethtool_stats || !ops->get_sset_count)
|
|
return -EOPNOTSUPP;
|
|
|
|
n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
|
|
if (n_stats < 0)
|
|
return n_stats;
|
|
WARN_ON(n_stats == 0);
|
|
|
|
if (copy_from_user(&stats, useraddr, sizeof(stats)))
|
|
return -EFAULT;
|
|
|
|
stats.n_stats = n_stats;
|
|
data = kmalloc(n_stats * sizeof(u64), GFP_USER);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
ops->get_ethtool_stats(dev, &stats, data);
|
|
|
|
ret = -EFAULT;
|
|
if (copy_to_user(useraddr, &stats, sizeof(stats)))
|
|
goto out;
|
|
useraddr += sizeof(stats);
|
|
if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
|
|
goto out;
|
|
ret = 0;
|
|
|
|
out:
|
|
kfree(data);
|
|
return ret;
|
|
}
|
|
|
|
static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_perm_addr epaddr;
|
|
|
|
if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
|
|
return -EFAULT;
|
|
|
|
if (epaddr.size < dev->addr_len)
|
|
return -ETOOSMALL;
|
|
epaddr.size = dev->addr_len;
|
|
|
|
if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
|
|
return -EFAULT;
|
|
useraddr += sizeof(epaddr);
|
|
if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
|
|
u32 cmd, u32 (*actor)(struct net_device *))
|
|
{
|
|
struct ethtool_value edata = { .cmd = cmd };
|
|
|
|
if (!actor)
|
|
return -EOPNOTSUPP;
|
|
|
|
edata.data = actor(dev);
|
|
|
|
if (copy_to_user(useraddr, &edata, sizeof(edata)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
|
|
void (*actor)(struct net_device *, u32))
|
|
{
|
|
struct ethtool_value edata;
|
|
|
|
if (!actor)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&edata, useraddr, sizeof(edata)))
|
|
return -EFAULT;
|
|
|
|
actor(dev, edata.data);
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
|
|
int (*actor)(struct net_device *, u32))
|
|
{
|
|
struct ethtool_value edata;
|
|
|
|
if (!actor)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&edata, useraddr, sizeof(edata)))
|
|
return -EFAULT;
|
|
|
|
return actor(dev, edata.data);
|
|
}
|
|
|
|
static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
|
|
char __user *useraddr)
|
|
{
|
|
struct ethtool_flash efl;
|
|
|
|
if (copy_from_user(&efl, useraddr, sizeof(efl)))
|
|
return -EFAULT;
|
|
|
|
if (!dev->ethtool_ops->flash_device)
|
|
return -EOPNOTSUPP;
|
|
|
|
efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
|
|
|
|
return dev->ethtool_ops->flash_device(dev, &efl);
|
|
}
|
|
|
|
static int ethtool_set_dump(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
struct ethtool_dump dump;
|
|
|
|
if (!dev->ethtool_ops->set_dump)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&dump, useraddr, sizeof(dump)))
|
|
return -EFAULT;
|
|
|
|
return dev->ethtool_ops->set_dump(dev, &dump);
|
|
}
|
|
|
|
static int ethtool_get_dump_flag(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
int ret;
|
|
struct ethtool_dump dump;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
|
|
if (!ops->get_dump_flag)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&dump, useraddr, sizeof(dump)))
|
|
return -EFAULT;
|
|
|
|
ret = ops->get_dump_flag(dev, &dump);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (copy_to_user(useraddr, &dump, sizeof(dump)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_get_dump_data(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
int ret;
|
|
__u32 len;
|
|
struct ethtool_dump dump, tmp;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
void *data = NULL;
|
|
|
|
if (!ops->get_dump_data || !ops->get_dump_flag)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&dump, useraddr, sizeof(dump)))
|
|
return -EFAULT;
|
|
|
|
memset(&tmp, 0, sizeof(tmp));
|
|
tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
|
|
ret = ops->get_dump_flag(dev, &tmp);
|
|
if (ret)
|
|
return ret;
|
|
|
|
len = min(tmp.len, dump.len);
|
|
if (!len)
|
|
return -EFAULT;
|
|
|
|
/* Don't ever let the driver think there's more space available
|
|
* than it requested with .get_dump_flag().
|
|
*/
|
|
dump.len = len;
|
|
|
|
/* Always allocate enough space to hold the whole thing so that the
|
|
* driver does not need to check the length and bother with partial
|
|
* dumping.
|
|
*/
|
|
data = vzalloc(tmp.len);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
ret = ops->get_dump_data(dev, &dump, data);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* There are two sane possibilities:
|
|
* 1. The driver's .get_dump_data() does not touch dump.len.
|
|
* 2. Or it may set dump.len to how much it really writes, which
|
|
* should be tmp.len (or len if it can do a partial dump).
|
|
* In any case respond to userspace with the actual length of data
|
|
* it's receiving.
|
|
*/
|
|
WARN_ON(dump.len != len && dump.len != tmp.len);
|
|
dump.len = len;
|
|
|
|
if (copy_to_user(useraddr, &dump, sizeof(dump))) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
useraddr += offsetof(struct ethtool_dump, data);
|
|
if (copy_to_user(useraddr, data, len))
|
|
ret = -EFAULT;
|
|
out:
|
|
vfree(data);
|
|
return ret;
|
|
}
|
|
|
|
static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
int err = 0;
|
|
struct ethtool_ts_info info;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
struct phy_device *phydev = dev->phydev;
|
|
|
|
memset(&info, 0, sizeof(info));
|
|
info.cmd = ETHTOOL_GET_TS_INFO;
|
|
|
|
if (phydev && phydev->drv && phydev->drv->ts_info) {
|
|
err = phydev->drv->ts_info(phydev, &info);
|
|
} else if (ops->get_ts_info) {
|
|
err = ops->get_ts_info(dev, &info);
|
|
} else {
|
|
info.so_timestamping =
|
|
SOF_TIMESTAMPING_RX_SOFTWARE |
|
|
SOF_TIMESTAMPING_SOFTWARE;
|
|
info.phc_index = -1;
|
|
}
|
|
|
|
if (err)
|
|
return err;
|
|
|
|
if (copy_to_user(useraddr, &info, sizeof(info)))
|
|
err = -EFAULT;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int ethtool_get_module_info(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
int ret;
|
|
struct ethtool_modinfo modinfo;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
|
|
if (!ops->get_module_info)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
|
|
return -EFAULT;
|
|
|
|
ret = ops->get_module_info(dev, &modinfo);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_get_module_eeprom(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
int ret;
|
|
struct ethtool_modinfo modinfo;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
|
|
if (!ops->get_module_info || !ops->get_module_eeprom)
|
|
return -EOPNOTSUPP;
|
|
|
|
ret = ops->get_module_info(dev, &modinfo);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return ethtool_get_any_eeprom(dev, useraddr, ops->get_module_eeprom,
|
|
modinfo.eeprom_len);
|
|
}
|
|
|
|
/* The main entry point in this file. Called from net/core/dev_ioctl.c */
|
|
|
|
int dev_ethtool(struct net *net, struct ifreq *ifr)
|
|
{
|
|
struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
|
|
void __user *useraddr = ifr->ifr_data;
|
|
u32 ethcmd;
|
|
int rc;
|
|
netdev_features_t old_features;
|
|
|
|
if (!dev || !netif_device_present(dev))
|
|
return -ENODEV;
|
|
|
|
if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
|
|
return -EFAULT;
|
|
|
|
/* Allow some commands to be done by anyone */
|
|
switch (ethcmd) {
|
|
case ETHTOOL_GSET:
|
|
case ETHTOOL_GDRVINFO:
|
|
case ETHTOOL_GMSGLVL:
|
|
case ETHTOOL_GLINK:
|
|
case ETHTOOL_GCOALESCE:
|
|
case ETHTOOL_GRINGPARAM:
|
|
case ETHTOOL_GPAUSEPARAM:
|
|
case ETHTOOL_GRXCSUM:
|
|
case ETHTOOL_GTXCSUM:
|
|
case ETHTOOL_GSG:
|
|
case ETHTOOL_GSSET_INFO:
|
|
case ETHTOOL_GSTRINGS:
|
|
case ETHTOOL_GSTATS:
|
|
case ETHTOOL_GTSO:
|
|
case ETHTOOL_GPERMADDR:
|
|
case ETHTOOL_GUFO:
|
|
case ETHTOOL_GGSO:
|
|
case ETHTOOL_GGRO:
|
|
case ETHTOOL_GFLAGS:
|
|
case ETHTOOL_GPFLAGS:
|
|
case ETHTOOL_GRXFH:
|
|
case ETHTOOL_GRXRINGS:
|
|
case ETHTOOL_GRXCLSRLCNT:
|
|
case ETHTOOL_GRXCLSRULE:
|
|
case ETHTOOL_GRXCLSRLALL:
|
|
case ETHTOOL_GRXFHINDIR:
|
|
case ETHTOOL_GRSSH:
|
|
case ETHTOOL_GFEATURES:
|
|
case ETHTOOL_GCHANNELS:
|
|
case ETHTOOL_GET_TS_INFO:
|
|
case ETHTOOL_GEEE:
|
|
break;
|
|
default:
|
|
if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
}
|
|
|
|
if (dev->ethtool_ops->begin) {
|
|
rc = dev->ethtool_ops->begin(dev);
|
|
if (rc < 0)
|
|
return rc;
|
|
}
|
|
old_features = dev->features;
|
|
|
|
switch (ethcmd) {
|
|
case ETHTOOL_GSET:
|
|
rc = ethtool_get_settings(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SSET:
|
|
rc = ethtool_set_settings(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GDRVINFO:
|
|
rc = ethtool_get_drvinfo(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GREGS:
|
|
rc = ethtool_get_regs(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GWOL:
|
|
rc = ethtool_get_wol(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SWOL:
|
|
rc = ethtool_set_wol(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GMSGLVL:
|
|
rc = ethtool_get_value(dev, useraddr, ethcmd,
|
|
dev->ethtool_ops->get_msglevel);
|
|
break;
|
|
case ETHTOOL_SMSGLVL:
|
|
rc = ethtool_set_value_void(dev, useraddr,
|
|
dev->ethtool_ops->set_msglevel);
|
|
break;
|
|
case ETHTOOL_GEEE:
|
|
rc = ethtool_get_eee(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SEEE:
|
|
rc = ethtool_set_eee(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_NWAY_RST:
|
|
rc = ethtool_nway_reset(dev);
|
|
break;
|
|
case ETHTOOL_GLINK:
|
|
rc = ethtool_get_link(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GEEPROM:
|
|
rc = ethtool_get_eeprom(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SEEPROM:
|
|
rc = ethtool_set_eeprom(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GCOALESCE:
|
|
rc = ethtool_get_coalesce(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SCOALESCE:
|
|
rc = ethtool_set_coalesce(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GRINGPARAM:
|
|
rc = ethtool_get_ringparam(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SRINGPARAM:
|
|
rc = ethtool_set_ringparam(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GPAUSEPARAM:
|
|
rc = ethtool_get_pauseparam(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SPAUSEPARAM:
|
|
rc = ethtool_set_pauseparam(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_TEST:
|
|
rc = ethtool_self_test(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GSTRINGS:
|
|
rc = ethtool_get_strings(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_PHYS_ID:
|
|
rc = ethtool_phys_id(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GSTATS:
|
|
rc = ethtool_get_stats(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GPERMADDR:
|
|
rc = ethtool_get_perm_addr(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GFLAGS:
|
|
rc = ethtool_get_value(dev, useraddr, ethcmd,
|
|
__ethtool_get_flags);
|
|
break;
|
|
case ETHTOOL_SFLAGS:
|
|
rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
|
|
break;
|
|
case ETHTOOL_GPFLAGS:
|
|
rc = ethtool_get_value(dev, useraddr, ethcmd,
|
|
dev->ethtool_ops->get_priv_flags);
|
|
break;
|
|
case ETHTOOL_SPFLAGS:
|
|
rc = ethtool_set_value(dev, useraddr,
|
|
dev->ethtool_ops->set_priv_flags);
|
|
break;
|
|
case ETHTOOL_GRXFH:
|
|
case ETHTOOL_GRXRINGS:
|
|
case ETHTOOL_GRXCLSRLCNT:
|
|
case ETHTOOL_GRXCLSRULE:
|
|
case ETHTOOL_GRXCLSRLALL:
|
|
rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
|
|
break;
|
|
case ETHTOOL_SRXFH:
|
|
case ETHTOOL_SRXCLSRLDEL:
|
|
case ETHTOOL_SRXCLSRLINS:
|
|
rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
|
|
break;
|
|
case ETHTOOL_FLASHDEV:
|
|
rc = ethtool_flash_device(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_RESET:
|
|
rc = ethtool_reset(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GSSET_INFO:
|
|
rc = ethtool_get_sset_info(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GRXFHINDIR:
|
|
rc = ethtool_get_rxfh_indir(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SRXFHINDIR:
|
|
rc = ethtool_set_rxfh_indir(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GRSSH:
|
|
rc = ethtool_get_rxfh(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SRSSH:
|
|
rc = ethtool_set_rxfh(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GFEATURES:
|
|
rc = ethtool_get_features(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SFEATURES:
|
|
rc = ethtool_set_features(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GTXCSUM:
|
|
case ETHTOOL_GRXCSUM:
|
|
case ETHTOOL_GSG:
|
|
case ETHTOOL_GTSO:
|
|
case ETHTOOL_GUFO:
|
|
case ETHTOOL_GGSO:
|
|
case ETHTOOL_GGRO:
|
|
rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
|
|
break;
|
|
case ETHTOOL_STXCSUM:
|
|
case ETHTOOL_SRXCSUM:
|
|
case ETHTOOL_SSG:
|
|
case ETHTOOL_STSO:
|
|
case ETHTOOL_SUFO:
|
|
case ETHTOOL_SGSO:
|
|
case ETHTOOL_SGRO:
|
|
rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
|
|
break;
|
|
case ETHTOOL_GCHANNELS:
|
|
rc = ethtool_get_channels(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SCHANNELS:
|
|
rc = ethtool_set_channels(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SET_DUMP:
|
|
rc = ethtool_set_dump(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GET_DUMP_FLAG:
|
|
rc = ethtool_get_dump_flag(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GET_DUMP_DATA:
|
|
rc = ethtool_get_dump_data(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GET_TS_INFO:
|
|
rc = ethtool_get_ts_info(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GMODULEINFO:
|
|
rc = ethtool_get_module_info(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GMODULEEEPROM:
|
|
rc = ethtool_get_module_eeprom(dev, useraddr);
|
|
break;
|
|
default:
|
|
rc = -EOPNOTSUPP;
|
|
}
|
|
|
|
if (dev->ethtool_ops->complete)
|
|
dev->ethtool_ops->complete(dev);
|
|
|
|
if (old_features != dev->features)
|
|
netdev_features_change(dev);
|
|
|
|
return rc;
|
|
}
|