mirror of https://gitee.com/openkylin/linux.git
2808 lines
71 KiB
C
2808 lines
71 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/signal.h>
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#include <linux/net.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_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-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_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
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[NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
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[NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
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[NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
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[NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
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[NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
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[NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
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[NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation",
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[NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
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[NETIF_F_SCTP_CRC_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_HW_TC_BIT] = "hw-tc-offload",
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[NETIF_F_HW_ESP_BIT] = "esp-hw-offload",
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[NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload",
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};
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static const char
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rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
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[ETH_RSS_HASH_TOP_BIT] = "toeplitz",
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[ETH_RSS_HASH_XOR_BIT] = "xor",
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[ETH_RSS_HASH_CRC32_BIT] = "crc32",
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};
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static const char
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tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
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[ETHTOOL_ID_UNSPEC] = "Unspec",
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[ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
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[ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
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};
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static const char
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phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
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[ETHTOOL_ID_UNSPEC] = "Unspec",
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[ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
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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 phy_get_sset_count(struct phy_device *phydev)
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{
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int ret;
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if (phydev->drv->get_sset_count &&
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phydev->drv->get_strings &&
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phydev->drv->get_stats) {
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mutex_lock(&phydev->lock);
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ret = phydev->drv->get_sset_count(phydev);
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mutex_unlock(&phydev->lock);
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return ret;
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}
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return -EOPNOTSUPP;
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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 (sset == ETH_SS_RSS_HASH_FUNCS)
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return ARRAY_SIZE(rss_hash_func_strings);
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if (sset == ETH_SS_TUNABLES)
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return ARRAY_SIZE(tunable_strings);
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if (sset == ETH_SS_PHY_TUNABLES)
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return ARRAY_SIZE(phy_tunable_strings);
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if (sset == ETH_SS_PHY_STATS) {
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if (dev->phydev)
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return phy_get_sset_count(dev->phydev);
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else
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return -EOPNOTSUPP;
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}
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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 if (stringset == ETH_SS_RSS_HASH_FUNCS)
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memcpy(data, rss_hash_func_strings,
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sizeof(rss_hash_func_strings));
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else if (stringset == ETH_SS_TUNABLES)
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memcpy(data, tunable_strings, sizeof(tunable_strings));
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else if (stringset == ETH_SS_PHY_TUNABLES)
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memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
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else if (stringset == ETH_SS_PHY_STATS) {
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struct phy_device *phydev = dev->phydev;
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if (phydev) {
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mutex_lock(&phydev->lock);
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phydev->drv->get_strings(phydev, data);
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mutex_unlock(&phydev->lock);
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} else {
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return;
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}
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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_CSUM_MASK | NETIF_F_SCTP_CRC;
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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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void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
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u32 legacy_u32)
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{
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bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
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dst[0] = legacy_u32;
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}
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EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
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/* return false if src had higher bits set. lower bits always updated. */
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bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
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const unsigned long *src)
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{
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bool retval = true;
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/* TODO: following test will soon always be true */
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if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
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__ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
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bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
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bitmap_fill(ext, 32);
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bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
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if (bitmap_intersects(ext, src,
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__ETHTOOL_LINK_MODE_MASK_NBITS)) {
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/* src mask goes beyond bit 31 */
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retval = false;
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}
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}
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*legacy_u32 = src[0];
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return retval;
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}
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EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
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/* return false if legacy contained non-0 deprecated fields
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* transceiver/maxtxpkt/maxrxpkt. rest of ksettings always updated
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*/
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static bool
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convert_legacy_settings_to_link_ksettings(
|
|
struct ethtool_link_ksettings *link_ksettings,
|
|
const struct ethtool_cmd *legacy_settings)
|
|
{
|
|
bool retval = true;
|
|
|
|
memset(link_ksettings, 0, sizeof(*link_ksettings));
|
|
|
|
/* This is used to tell users that driver is still using these
|
|
* deprecated legacy fields, and they should not use
|
|
* %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
|
|
*/
|
|
if (legacy_settings->transceiver ||
|
|
legacy_settings->maxtxpkt ||
|
|
legacy_settings->maxrxpkt)
|
|
retval = false;
|
|
|
|
ethtool_convert_legacy_u32_to_link_mode(
|
|
link_ksettings->link_modes.supported,
|
|
legacy_settings->supported);
|
|
ethtool_convert_legacy_u32_to_link_mode(
|
|
link_ksettings->link_modes.advertising,
|
|
legacy_settings->advertising);
|
|
ethtool_convert_legacy_u32_to_link_mode(
|
|
link_ksettings->link_modes.lp_advertising,
|
|
legacy_settings->lp_advertising);
|
|
link_ksettings->base.speed
|
|
= ethtool_cmd_speed(legacy_settings);
|
|
link_ksettings->base.duplex
|
|
= legacy_settings->duplex;
|
|
link_ksettings->base.port
|
|
= legacy_settings->port;
|
|
link_ksettings->base.phy_address
|
|
= legacy_settings->phy_address;
|
|
link_ksettings->base.autoneg
|
|
= legacy_settings->autoneg;
|
|
link_ksettings->base.mdio_support
|
|
= legacy_settings->mdio_support;
|
|
link_ksettings->base.eth_tp_mdix
|
|
= legacy_settings->eth_tp_mdix;
|
|
link_ksettings->base.eth_tp_mdix_ctrl
|
|
= legacy_settings->eth_tp_mdix_ctrl;
|
|
return retval;
|
|
}
|
|
|
|
/* return false if ksettings link modes had higher bits
|
|
* set. legacy_settings always updated (best effort)
|
|
*/
|
|
static bool
|
|
convert_link_ksettings_to_legacy_settings(
|
|
struct ethtool_cmd *legacy_settings,
|
|
const struct ethtool_link_ksettings *link_ksettings)
|
|
{
|
|
bool retval = true;
|
|
|
|
memset(legacy_settings, 0, sizeof(*legacy_settings));
|
|
/* this also clears the deprecated fields in legacy structure:
|
|
* __u8 transceiver;
|
|
* __u32 maxtxpkt;
|
|
* __u32 maxrxpkt;
|
|
*/
|
|
|
|
retval &= ethtool_convert_link_mode_to_legacy_u32(
|
|
&legacy_settings->supported,
|
|
link_ksettings->link_modes.supported);
|
|
retval &= ethtool_convert_link_mode_to_legacy_u32(
|
|
&legacy_settings->advertising,
|
|
link_ksettings->link_modes.advertising);
|
|
retval &= ethtool_convert_link_mode_to_legacy_u32(
|
|
&legacy_settings->lp_advertising,
|
|
link_ksettings->link_modes.lp_advertising);
|
|
ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
|
|
legacy_settings->duplex
|
|
= link_ksettings->base.duplex;
|
|
legacy_settings->port
|
|
= link_ksettings->base.port;
|
|
legacy_settings->phy_address
|
|
= link_ksettings->base.phy_address;
|
|
legacy_settings->autoneg
|
|
= link_ksettings->base.autoneg;
|
|
legacy_settings->mdio_support
|
|
= link_ksettings->base.mdio_support;
|
|
legacy_settings->eth_tp_mdix
|
|
= link_ksettings->base.eth_tp_mdix;
|
|
legacy_settings->eth_tp_mdix_ctrl
|
|
= link_ksettings->base.eth_tp_mdix_ctrl;
|
|
return retval;
|
|
}
|
|
|
|
/* number of 32-bit words to store the user's link mode bitmaps */
|
|
#define __ETHTOOL_LINK_MODE_MASK_NU32 \
|
|
DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
|
|
|
|
/* layout of the struct passed from/to userland */
|
|
struct ethtool_link_usettings {
|
|
struct ethtool_link_settings base;
|
|
struct {
|
|
__u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
|
|
__u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
|
|
__u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
|
|
} link_modes;
|
|
};
|
|
|
|
/* Internal kernel helper to query a device ethtool_link_settings.
|
|
*
|
|
* Backward compatibility note: for compatibility with legacy drivers
|
|
* that implement only the ethtool_cmd API, this has to work with both
|
|
* drivers implementing get_link_ksettings API and drivers
|
|
* implementing get_settings API. When drivers implement get_settings
|
|
* and report ethtool_cmd deprecated fields
|
|
* (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
|
|
* because the resulting struct ethtool_link_settings does not report them.
|
|
*/
|
|
int __ethtool_get_link_ksettings(struct net_device *dev,
|
|
struct ethtool_link_ksettings *link_ksettings)
|
|
{
|
|
int err;
|
|
struct ethtool_cmd cmd;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (dev->ethtool_ops->get_link_ksettings) {
|
|
memset(link_ksettings, 0, sizeof(*link_ksettings));
|
|
return dev->ethtool_ops->get_link_ksettings(dev,
|
|
link_ksettings);
|
|
}
|
|
|
|
/* driver doesn't support %ethtool_link_ksettings API. revert to
|
|
* legacy %ethtool_cmd API, unless it's not supported either.
|
|
* TODO: remove when ethtool_ops::get_settings disappears internally
|
|
*/
|
|
if (!dev->ethtool_ops->get_settings)
|
|
return -EOPNOTSUPP;
|
|
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
cmd.cmd = ETHTOOL_GSET;
|
|
err = dev->ethtool_ops->get_settings(dev, &cmd);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
|
|
*/
|
|
convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(__ethtool_get_link_ksettings);
|
|
|
|
/* convert ethtool_link_usettings in user space to a kernel internal
|
|
* ethtool_link_ksettings. return 0 on success, errno on error.
|
|
*/
|
|
static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
|
|
const void __user *from)
|
|
{
|
|
struct ethtool_link_usettings link_usettings;
|
|
|
|
if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
|
|
return -EFAULT;
|
|
|
|
memcpy(&to->base, &link_usettings.base, sizeof(to->base));
|
|
bitmap_from_u32array(to->link_modes.supported,
|
|
__ETHTOOL_LINK_MODE_MASK_NBITS,
|
|
link_usettings.link_modes.supported,
|
|
__ETHTOOL_LINK_MODE_MASK_NU32);
|
|
bitmap_from_u32array(to->link_modes.advertising,
|
|
__ETHTOOL_LINK_MODE_MASK_NBITS,
|
|
link_usettings.link_modes.advertising,
|
|
__ETHTOOL_LINK_MODE_MASK_NU32);
|
|
bitmap_from_u32array(to->link_modes.lp_advertising,
|
|
__ETHTOOL_LINK_MODE_MASK_NBITS,
|
|
link_usettings.link_modes.lp_advertising,
|
|
__ETHTOOL_LINK_MODE_MASK_NU32);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* convert a kernel internal ethtool_link_ksettings to
|
|
* ethtool_link_usettings in user space. return 0 on success, errno on
|
|
* error.
|
|
*/
|
|
static int
|
|
store_link_ksettings_for_user(void __user *to,
|
|
const struct ethtool_link_ksettings *from)
|
|
{
|
|
struct ethtool_link_usettings link_usettings;
|
|
|
|
memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
|
|
bitmap_to_u32array(link_usettings.link_modes.supported,
|
|
__ETHTOOL_LINK_MODE_MASK_NU32,
|
|
from->link_modes.supported,
|
|
__ETHTOOL_LINK_MODE_MASK_NBITS);
|
|
bitmap_to_u32array(link_usettings.link_modes.advertising,
|
|
__ETHTOOL_LINK_MODE_MASK_NU32,
|
|
from->link_modes.advertising,
|
|
__ETHTOOL_LINK_MODE_MASK_NBITS);
|
|
bitmap_to_u32array(link_usettings.link_modes.lp_advertising,
|
|
__ETHTOOL_LINK_MODE_MASK_NU32,
|
|
from->link_modes.lp_advertising,
|
|
__ETHTOOL_LINK_MODE_MASK_NBITS);
|
|
|
|
if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Query device for its ethtool_link_settings.
|
|
*
|
|
* Backward compatibility note: this function must fail when driver
|
|
* does not implement ethtool::get_link_ksettings, even if legacy
|
|
* ethtool_ops::get_settings is implemented. This tells new versions
|
|
* of ethtool that they should use the legacy API %ETHTOOL_GSET for
|
|
* this driver, so that they can correctly access the ethtool_cmd
|
|
* deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
|
|
* implements ethtool_ops::get_settings anymore.
|
|
*/
|
|
static int ethtool_get_link_ksettings(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
int err = 0;
|
|
struct ethtool_link_ksettings link_ksettings;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (!dev->ethtool_ops->get_link_ksettings)
|
|
return -EOPNOTSUPP;
|
|
|
|
/* handle bitmap nbits handshake */
|
|
if (copy_from_user(&link_ksettings.base, useraddr,
|
|
sizeof(link_ksettings.base)))
|
|
return -EFAULT;
|
|
|
|
if (__ETHTOOL_LINK_MODE_MASK_NU32
|
|
!= link_ksettings.base.link_mode_masks_nwords) {
|
|
/* wrong link mode nbits requested */
|
|
memset(&link_ksettings, 0, sizeof(link_ksettings));
|
|
link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
|
|
/* send back number of words required as negative val */
|
|
compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
|
|
"need too many bits for link modes!");
|
|
link_ksettings.base.link_mode_masks_nwords
|
|
= -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
|
|
|
|
/* copy the base fields back to user, not the link
|
|
* mode bitmaps
|
|
*/
|
|
if (copy_to_user(useraddr, &link_ksettings.base,
|
|
sizeof(link_ksettings.base)))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* handshake successful: user/kernel agree on
|
|
* link_mode_masks_nwords
|
|
*/
|
|
|
|
memset(&link_ksettings, 0, sizeof(link_ksettings));
|
|
err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* make sure we tell the right values to user */
|
|
link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
|
|
link_ksettings.base.link_mode_masks_nwords
|
|
= __ETHTOOL_LINK_MODE_MASK_NU32;
|
|
|
|
return store_link_ksettings_for_user(useraddr, &link_ksettings);
|
|
}
|
|
|
|
/* Update device ethtool_link_settings.
|
|
*
|
|
* Backward compatibility note: this function must fail when driver
|
|
* does not implement ethtool::set_link_ksettings, even if legacy
|
|
* ethtool_ops::set_settings is implemented. This tells new versions
|
|
* of ethtool that they should use the legacy API %ETHTOOL_SSET for
|
|
* this driver, so that they can correctly update the ethtool_cmd
|
|
* deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
|
|
* implements ethtool_ops::get_settings anymore.
|
|
*/
|
|
static int ethtool_set_link_ksettings(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
int err;
|
|
struct ethtool_link_ksettings link_ksettings;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (!dev->ethtool_ops->set_link_ksettings)
|
|
return -EOPNOTSUPP;
|
|
|
|
/* make sure nbits field has expected value */
|
|
if (copy_from_user(&link_ksettings.base, useraddr,
|
|
sizeof(link_ksettings.base)))
|
|
return -EFAULT;
|
|
|
|
if (__ETHTOOL_LINK_MODE_MASK_NU32
|
|
!= link_ksettings.base.link_mode_masks_nwords)
|
|
return -EINVAL;
|
|
|
|
/* copy the whole structure, now that we know it has expected
|
|
* format
|
|
*/
|
|
err = load_link_ksettings_from_user(&link_ksettings, useraddr);
|
|
if (err)
|
|
return err;
|
|
|
|
/* re-check nwords field, just in case */
|
|
if (__ETHTOOL_LINK_MODE_MASK_NU32
|
|
!= link_ksettings.base.link_mode_masks_nwords)
|
|
return -EINVAL;
|
|
|
|
return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
|
|
}
|
|
|
|
static void
|
|
warn_incomplete_ethtool_legacy_settings_conversion(const char *details)
|
|
{
|
|
char name[sizeof(current->comm)];
|
|
|
|
pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n",
|
|
get_task_comm(name, current), details);
|
|
}
|
|
|
|
/* Query device for its ethtool_cmd settings.
|
|
*
|
|
* Backward compatibility note: for compatibility with legacy ethtool,
|
|
* this has to work with both drivers implementing get_link_ksettings
|
|
* API and drivers implementing get_settings API. When drivers
|
|
* implement get_link_ksettings and report higher link mode bits, a
|
|
* kernel warning is logged once (with name of 1st driver/device) to
|
|
* recommend user to upgrade ethtool, but the command is successful
|
|
* (only the lower link mode bits reported back to user).
|
|
*/
|
|
static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_cmd cmd;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (dev->ethtool_ops->get_link_ksettings) {
|
|
/* First, use link_ksettings API if it is supported */
|
|
int err;
|
|
struct ethtool_link_ksettings link_ksettings;
|
|
|
|
memset(&link_ksettings, 0, sizeof(link_ksettings));
|
|
err = dev->ethtool_ops->get_link_ksettings(dev,
|
|
&link_ksettings);
|
|
if (err < 0)
|
|
return err;
|
|
if (!convert_link_ksettings_to_legacy_settings(&cmd,
|
|
&link_ksettings))
|
|
warn_incomplete_ethtool_legacy_settings_conversion(
|
|
"link modes are only partially reported");
|
|
|
|
/* send a sensible cmd tag back to user */
|
|
cmd.cmd = ETHTOOL_GSET;
|
|
} else {
|
|
/* driver doesn't support %ethtool_link_ksettings
|
|
* API. revert to legacy %ethtool_cmd API, unless it's
|
|
* not supported either.
|
|
*/
|
|
int err;
|
|
|
|
if (!dev->ethtool_ops->get_settings)
|
|
return -EOPNOTSUPP;
|
|
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
cmd.cmd = ETHTOOL_GSET;
|
|
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;
|
|
}
|
|
|
|
/* Update device link settings with given ethtool_cmd.
|
|
*
|
|
* Backward compatibility note: for compatibility with legacy ethtool,
|
|
* this has to work with both drivers implementing set_link_ksettings
|
|
* API and drivers implementing set_settings API. When drivers
|
|
* implement set_link_ksettings and user's request updates deprecated
|
|
* ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
|
|
* warning is logged once (with name of 1st driver/device) to
|
|
* recommend user to upgrade ethtool, and the request is rejected.
|
|
*/
|
|
static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_cmd cmd;
|
|
|
|
ASSERT_RTNL();
|
|
|
|
if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
|
|
return -EFAULT;
|
|
|
|
/* first, try new %ethtool_link_ksettings API. */
|
|
if (dev->ethtool_ops->set_link_ksettings) {
|
|
struct ethtool_link_ksettings link_ksettings;
|
|
|
|
if (!convert_legacy_settings_to_link_ksettings(&link_ksettings,
|
|
&cmd))
|
|
return -EINVAL;
|
|
|
|
link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS;
|
|
link_ksettings.base.link_mode_masks_nwords
|
|
= __ETHTOOL_LINK_MODE_MASK_NU32;
|
|
return dev->ethtool_ops->set_link_ksettings(dev,
|
|
&link_ksettings);
|
|
}
|
|
|
|
/* legacy %ethtool_cmd API */
|
|
|
|
/* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
|
|
* disappears internally
|
|
*/
|
|
|
|
if (!dev->ethtool_ops->set_settings)
|
|
return -EOPNOTSUPP;
|
|
|
|
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->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->get_sset_count) {
|
|
int rc;
|
|
|
|
rc = ops->get_sset_count(dev, ETH_SS_TEST);
|
|
if (rc >= 0)
|
|
info.testinfo_len = rc;
|
|
rc = ops->get_sset_count(dev, ETH_SS_STATS);
|
|
if (rc >= 0)
|
|
info.n_stats = rc;
|
|
rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
|
|
if (rc >= 0)
|
|
info.n_priv_flags = rc;
|
|
}
|
|
if (ops->get_regs_len)
|
|
info.regdump_len = ops->get_regs_len(dev);
|
|
if (ops->get_eeprom_len)
|
|
info.eedump_len = ops->get_eeprom_len(dev);
|
|
|
|
if (copy_to_user(useraddr, &info, sizeof(info)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static 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);
|
|
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 i;
|
|
|
|
if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
|
|
return -EFAULT;
|
|
|
|
/* Validate ring indices */
|
|
for (i = 0; i < size; i++)
|
|
if (indir[i] >= rx_rings->data)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
|
|
|
|
void netdev_rss_key_fill(void *buffer, size_t len)
|
|
{
|
|
BUG_ON(len > sizeof(netdev_rss_key));
|
|
net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
|
|
memcpy(buffer, netdev_rss_key, len);
|
|
}
|
|
EXPORT_SYMBOL(netdev_rss_key_fill);
|
|
|
|
static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
|
|
{
|
|
u32 dev_size, current_max = 0;
|
|
u32 *indir;
|
|
int ret;
|
|
|
|
if (!dev->ethtool_ops->get_rxfh_indir_size ||
|
|
!dev->ethtool_ops->get_rxfh)
|
|
return -EOPNOTSUPP;
|
|
dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
|
|
if (dev_size == 0)
|
|
return -EOPNOTSUPP;
|
|
|
|
indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
|
|
if (!indir)
|
|
return -ENOMEM;
|
|
|
|
ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
|
|
if (ret)
|
|
goto out;
|
|
|
|
while (dev_size--)
|
|
current_max = max(current_max, indir[dev_size]);
|
|
|
|
*max = current_max;
|
|
|
|
out:
|
|
kfree(indir);
|
|
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)
|
|
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(dev, indir, NULL, NULL);
|
|
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 ||
|
|
!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(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* indicate whether rxfh was set to default */
|
|
if (user_size == 0)
|
|
dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
|
|
else
|
|
dev->priv_flags |= IFF_RXFH_CONFIGURED;
|
|
|
|
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, user_key_size;
|
|
u32 dev_indir_size = 0, dev_key_size = 0;
|
|
struct ethtool_rxfh rxfh;
|
|
u32 total_size;
|
|
u32 indir_bytes;
|
|
u32 *indir = NULL;
|
|
u8 dev_hfunc = 0;
|
|
u8 *hkey = NULL;
|
|
u8 *rss_config;
|
|
|
|
if (!ops->get_rxfh)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (ops->get_rxfh_indir_size)
|
|
dev_indir_size = ops->get_rxfh_indir_size(dev);
|
|
if (ops->get_rxfh_key_size)
|
|
dev_key_size = ops->get_rxfh_key_size(dev);
|
|
|
|
if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
|
|
return -EFAULT;
|
|
user_indir_size = rxfh.indir_size;
|
|
user_key_size = rxfh.key_size;
|
|
|
|
/* Check that reserved fields are 0 for now */
|
|
if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
|
|
rxfh.rsvd8[2] || rxfh.rsvd32)
|
|
return -EINVAL;
|
|
|
|
rxfh.indir_size = dev_indir_size;
|
|
rxfh.key_size = dev_key_size;
|
|
if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
|
|
return -EFAULT;
|
|
|
|
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, &dev_hfunc);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
|
|
&dev_hfunc, sizeof(rxfh.hfunc))) {
|
|
ret = -EFAULT;
|
|
} else if (copy_to_user(useraddr +
|
|
offsetof(struct ethtool_rxfh, rss_config[0]),
|
|
rss_config, total_size)) {
|
|
ret = -EFAULT;
|
|
}
|
|
out:
|
|
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;
|
|
struct ethtool_rxfh rxfh;
|
|
u32 dev_indir_size = 0, dev_key_size = 0, i;
|
|
u32 *indir = NULL, indir_bytes = 0;
|
|
u8 *hkey = NULL;
|
|
u8 *rss_config;
|
|
u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
|
|
|
|
if (!ops->get_rxnfc || !ops->set_rxfh)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (ops->get_rxfh_indir_size)
|
|
dev_indir_size = ops->get_rxfh_indir_size(dev);
|
|
if (ops->get_rxfh_key_size)
|
|
dev_key_size = ops->get_rxfh_key_size(dev);
|
|
|
|
if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
|
|
return -EFAULT;
|
|
|
|
/* Check that reserved fields are 0 for now */
|
|
if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
|
|
rxfh.rsvd8[2] || rxfh.rsvd32)
|
|
return -EINVAL;
|
|
|
|
/* If either indir, hash key or function is valid, proceed further.
|
|
* Must request at least one change: indir size, hash key or function.
|
|
*/
|
|
if ((rxfh.indir_size &&
|
|
rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
|
|
rxfh.indir_size != dev_indir_size) ||
|
|
(rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
|
|
(rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
|
|
rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
|
|
return -EINVAL;
|
|
|
|
if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
|
|
indir_bytes = dev_indir_size * sizeof(indir[0]);
|
|
|
|
rss_config = kzalloc(indir_bytes + rxfh.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;
|
|
|
|
/* rxfh.indir_size == 0 means reset the indir table to default.
|
|
* rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
|
|
*/
|
|
if (rxfh.indir_size &&
|
|
rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
|
|
indir = (u32 *)rss_config;
|
|
ret = ethtool_copy_validate_indir(indir,
|
|
useraddr + rss_cfg_offset,
|
|
&rx_rings,
|
|
rxfh.indir_size);
|
|
if (ret)
|
|
goto out;
|
|
} else if (rxfh.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 (rxfh.key_size) {
|
|
hkey = rss_config + indir_bytes;
|
|
if (copy_from_user(hkey,
|
|
useraddr + rss_cfg_offset + indir_bytes,
|
|
rxfh.key_size)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* indicate whether rxfh was set to default */
|
|
if (rxfh.indir_size == 0)
|
|
dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
|
|
else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
|
|
dev->priv_flags |= IFF_RXFH_CONFIGURED;
|
|
|
|
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 = NULL;
|
|
if (reglen) {
|
|
regbuf = vzalloc(reglen);
|
|
if (!regbuf)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ops->get_regs(dev, ®s, regbuf);
|
|
|
|
ret = -EFAULT;
|
|
if (copy_to_user(useraddr, ®s, sizeof(regs)))
|
|
goto out;
|
|
useraddr += offsetof(struct ethtool_regs, data);
|
|
if (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 ||
|
|
!ops->get_eeprom_len(dev))
|
|
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 ||
|
|
!ops->get_eeprom_len(dev))
|
|
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, max = { .cmd = ETHTOOL_GCHANNELS };
|
|
u32 max_rx_in_use = 0;
|
|
|
|
if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&channels, useraddr, sizeof(channels)))
|
|
return -EFAULT;
|
|
|
|
dev->ethtool_ops->get_channels(dev, &max);
|
|
|
|
/* ensure new counts are within the maximums */
|
|
if ((channels.rx_count > max.max_rx) ||
|
|
(channels.tx_count > max.max_tx) ||
|
|
(channels.combined_count > max.max_combined) ||
|
|
(channels.other_count > max.max_other))
|
|
return -EINVAL;
|
|
|
|
/* ensure the new Rx count fits within the configured Rx flow
|
|
* indirection table settings */
|
|
if (netif_is_rxfh_configured(dev) &&
|
|
!ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
|
|
(channels.combined_count + channels.rx_count) <= max_rx_in_use)
|
|
return -EINVAL;
|
|
|
|
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;
|
|
if (ret > S32_MAX / ETH_GSTRING_LEN)
|
|
return -ENOMEM;
|
|
WARN_ON_ONCE(!ret);
|
|
|
|
gstrings.len = ret;
|
|
data = vzalloc(gstrings.len * ETH_GSTRING_LEN);
|
|
if (gstrings.len && !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 (gstrings.len &&
|
|
copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
|
|
goto out;
|
|
ret = 0;
|
|
|
|
out:
|
|
vfree(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;
|
|
if (n_stats > S32_MAX / sizeof(u64))
|
|
return -ENOMEM;
|
|
WARN_ON_ONCE(!n_stats);
|
|
if (copy_from_user(&stats, useraddr, sizeof(stats)))
|
|
return -EFAULT;
|
|
|
|
stats.n_stats = n_stats;
|
|
data = vzalloc(n_stats * sizeof(u64));
|
|
if (n_stats && !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 (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
|
|
goto out;
|
|
ret = 0;
|
|
|
|
out:
|
|
vfree(data);
|
|
return ret;
|
|
}
|
|
|
|
static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_stats stats;
|
|
struct phy_device *phydev = dev->phydev;
|
|
u64 *data;
|
|
int ret, n_stats;
|
|
|
|
if (!phydev)
|
|
return -EOPNOTSUPP;
|
|
|
|
n_stats = phy_get_sset_count(phydev);
|
|
if (n_stats < 0)
|
|
return n_stats;
|
|
if (n_stats > S32_MAX / sizeof(u64))
|
|
return -ENOMEM;
|
|
WARN_ON_ONCE(!n_stats);
|
|
|
|
if (copy_from_user(&stats, useraddr, sizeof(stats)))
|
|
return -EFAULT;
|
|
|
|
stats.n_stats = n_stats;
|
|
data = vzalloc(n_stats * sizeof(u64));
|
|
if (n_stats && !data)
|
|
return -ENOMEM;
|
|
|
|
mutex_lock(&phydev->lock);
|
|
phydev->drv->get_stats(phydev, &stats, data);
|
|
mutex_unlock(&phydev->lock);
|
|
|
|
ret = -EFAULT;
|
|
if (copy_to_user(useraddr, &stats, sizeof(stats)))
|
|
goto out;
|
|
useraddr += sizeof(stats);
|
|
if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
|
|
goto out;
|
|
ret = 0;
|
|
|
|
out:
|
|
vfree(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,
|
|
struct ethtool_modinfo *modinfo)
|
|
{
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
struct phy_device *phydev = dev->phydev;
|
|
|
|
if (phydev && phydev->drv && phydev->drv->module_info)
|
|
return phydev->drv->module_info(phydev, modinfo);
|
|
|
|
if (ops->get_module_info)
|
|
return ops->get_module_info(dev, modinfo);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int ethtool_get_module_info(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
int ret;
|
|
struct ethtool_modinfo modinfo;
|
|
|
|
if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
|
|
return -EFAULT;
|
|
|
|
ret = __ethtool_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,
|
|
struct ethtool_eeprom *ee, u8 *data)
|
|
{
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
struct phy_device *phydev = dev->phydev;
|
|
|
|
if (phydev && phydev->drv && phydev->drv->module_eeprom)
|
|
return phydev->drv->module_eeprom(phydev, ee, data);
|
|
|
|
if (ops->get_module_eeprom)
|
|
return ops->get_module_eeprom(dev, ee, data);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int ethtool_get_module_eeprom(struct net_device *dev,
|
|
void __user *useraddr)
|
|
{
|
|
int ret;
|
|
struct ethtool_modinfo modinfo;
|
|
|
|
ret = __ethtool_get_module_info(dev, &modinfo);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return ethtool_get_any_eeprom(dev, useraddr,
|
|
__ethtool_get_module_eeprom,
|
|
modinfo.eeprom_len);
|
|
}
|
|
|
|
static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
|
|
{
|
|
switch (tuna->id) {
|
|
case ETHTOOL_RX_COPYBREAK:
|
|
case ETHTOOL_TX_COPYBREAK:
|
|
if (tuna->len != sizeof(u32) ||
|
|
tuna->type_id != ETHTOOL_TUNABLE_U32)
|
|
return -EINVAL;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
int ret;
|
|
struct ethtool_tunable tuna;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
void *data;
|
|
|
|
if (!ops->get_tunable)
|
|
return -EOPNOTSUPP;
|
|
if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
|
|
return -EFAULT;
|
|
ret = ethtool_tunable_valid(&tuna);
|
|
if (ret)
|
|
return ret;
|
|
data = kmalloc(tuna.len, GFP_USER);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
ret = ops->get_tunable(dev, &tuna, data);
|
|
if (ret)
|
|
goto out;
|
|
useraddr += sizeof(tuna);
|
|
ret = -EFAULT;
|
|
if (copy_to_user(useraddr, data, tuna.len))
|
|
goto out;
|
|
ret = 0;
|
|
|
|
out:
|
|
kfree(data);
|
|
return ret;
|
|
}
|
|
|
|
static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
int ret;
|
|
struct ethtool_tunable tuna;
|
|
const struct ethtool_ops *ops = dev->ethtool_ops;
|
|
void *data;
|
|
|
|
if (!ops->set_tunable)
|
|
return -EOPNOTSUPP;
|
|
if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
|
|
return -EFAULT;
|
|
ret = ethtool_tunable_valid(&tuna);
|
|
if (ret)
|
|
return ret;
|
|
data = kmalloc(tuna.len, GFP_USER);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
useraddr += sizeof(tuna);
|
|
ret = -EFAULT;
|
|
if (copy_from_user(data, useraddr, tuna.len))
|
|
goto out;
|
|
ret = ops->set_tunable(dev, &tuna, data);
|
|
|
|
out:
|
|
kfree(data);
|
|
return ret;
|
|
}
|
|
|
|
static int ethtool_get_per_queue_coalesce(struct net_device *dev,
|
|
void __user *useraddr,
|
|
struct ethtool_per_queue_op *per_queue_opt)
|
|
{
|
|
u32 bit;
|
|
int ret;
|
|
DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
|
|
|
|
if (!dev->ethtool_ops->get_per_queue_coalesce)
|
|
return -EOPNOTSUPP;
|
|
|
|
useraddr += sizeof(*per_queue_opt);
|
|
|
|
bitmap_from_u32array(queue_mask,
|
|
MAX_NUM_QUEUE,
|
|
per_queue_opt->queue_mask,
|
|
DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
|
|
|
|
for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
|
|
struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
|
|
|
|
ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
|
|
if (ret != 0)
|
|
return ret;
|
|
if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
|
|
return -EFAULT;
|
|
useraddr += sizeof(coalesce);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ethtool_set_per_queue_coalesce(struct net_device *dev,
|
|
void __user *useraddr,
|
|
struct ethtool_per_queue_op *per_queue_opt)
|
|
{
|
|
u32 bit;
|
|
int i, ret = 0;
|
|
int n_queue;
|
|
struct ethtool_coalesce *backup = NULL, *tmp = NULL;
|
|
DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
|
|
|
|
if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
|
|
(!dev->ethtool_ops->get_per_queue_coalesce))
|
|
return -EOPNOTSUPP;
|
|
|
|
useraddr += sizeof(*per_queue_opt);
|
|
|
|
bitmap_from_u32array(queue_mask,
|
|
MAX_NUM_QUEUE,
|
|
per_queue_opt->queue_mask,
|
|
DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
|
|
n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
|
|
tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
|
|
if (!backup)
|
|
return -ENOMEM;
|
|
|
|
for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
|
|
struct ethtool_coalesce coalesce;
|
|
|
|
ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
|
|
if (ret != 0)
|
|
goto roll_back;
|
|
|
|
tmp++;
|
|
|
|
if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
|
|
ret = -EFAULT;
|
|
goto roll_back;
|
|
}
|
|
|
|
ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
|
|
if (ret != 0)
|
|
goto roll_back;
|
|
|
|
useraddr += sizeof(coalesce);
|
|
}
|
|
|
|
roll_back:
|
|
if (ret != 0) {
|
|
tmp = backup;
|
|
for_each_set_bit(i, queue_mask, bit) {
|
|
dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
|
|
tmp++;
|
|
}
|
|
}
|
|
kfree(backup);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
struct ethtool_per_queue_op per_queue_opt;
|
|
|
|
if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
|
|
return -EFAULT;
|
|
|
|
switch (per_queue_opt.sub_command) {
|
|
case ETHTOOL_GCOALESCE:
|
|
return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
|
|
case ETHTOOL_SCOALESCE:
|
|
return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
};
|
|
}
|
|
|
|
static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
|
|
{
|
|
switch (tuna->id) {
|
|
case ETHTOOL_PHY_DOWNSHIFT:
|
|
if (tuna->len != sizeof(u8) ||
|
|
tuna->type_id != ETHTOOL_TUNABLE_U8)
|
|
return -EINVAL;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
int ret;
|
|
struct ethtool_tunable tuna;
|
|
struct phy_device *phydev = dev->phydev;
|
|
void *data;
|
|
|
|
if (!(phydev && phydev->drv && phydev->drv->get_tunable))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
|
|
return -EFAULT;
|
|
ret = ethtool_phy_tunable_valid(&tuna);
|
|
if (ret)
|
|
return ret;
|
|
data = kmalloc(tuna.len, GFP_USER);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
mutex_lock(&phydev->lock);
|
|
ret = phydev->drv->get_tunable(phydev, &tuna, data);
|
|
mutex_unlock(&phydev->lock);
|
|
if (ret)
|
|
goto out;
|
|
useraddr += sizeof(tuna);
|
|
ret = -EFAULT;
|
|
if (copy_to_user(useraddr, data, tuna.len))
|
|
goto out;
|
|
ret = 0;
|
|
|
|
out:
|
|
kfree(data);
|
|
return ret;
|
|
}
|
|
|
|
static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
|
|
{
|
|
int ret;
|
|
struct ethtool_tunable tuna;
|
|
struct phy_device *phydev = dev->phydev;
|
|
void *data;
|
|
|
|
if (!(phydev && phydev->drv && phydev->drv->set_tunable))
|
|
return -EOPNOTSUPP;
|
|
if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
|
|
return -EFAULT;
|
|
ret = ethtool_phy_tunable_valid(&tuna);
|
|
if (ret)
|
|
return ret;
|
|
data = kmalloc(tuna.len, GFP_USER);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
useraddr += sizeof(tuna);
|
|
ret = -EFAULT;
|
|
if (copy_from_user(data, useraddr, tuna.len))
|
|
goto out;
|
|
mutex_lock(&phydev->lock);
|
|
ret = phydev->drv->set_tunable(phydev, &tuna, data);
|
|
mutex_unlock(&phydev->lock);
|
|
|
|
out:
|
|
kfree(data);
|
|
return ret;
|
|
}
|
|
|
|
/* 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, sub_cmd;
|
|
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;
|
|
|
|
if (ethcmd == ETHTOOL_PERQUEUE) {
|
|
if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
|
|
return -EFAULT;
|
|
} else {
|
|
sub_cmd = ethcmd;
|
|
}
|
|
/* Allow some commands to be done by anyone */
|
|
switch (sub_cmd) {
|
|
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_GPHYSTATS:
|
|
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:
|
|
case ETHTOOL_GTUNABLE:
|
|
case ETHTOOL_PHY_GTUNABLE:
|
|
case ETHTOOL_GLINKSETTINGS:
|
|
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;
|
|
case ETHTOOL_GTUNABLE:
|
|
rc = ethtool_get_tunable(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_STUNABLE:
|
|
rc = ethtool_set_tunable(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GPHYSTATS:
|
|
rc = ethtool_get_phy_stats(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_PERQUEUE:
|
|
rc = ethtool_set_per_queue(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_GLINKSETTINGS:
|
|
rc = ethtool_get_link_ksettings(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_SLINKSETTINGS:
|
|
rc = ethtool_set_link_ksettings(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_PHY_GTUNABLE:
|
|
rc = get_phy_tunable(dev, useraddr);
|
|
break;
|
|
case ETHTOOL_PHY_STUNABLE:
|
|
rc = set_phy_tunable(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;
|
|
}
|