From: Michal Kubecek <mkubecek@suse.cz>
Date: Wed, 11 Dec 2019 10:58:24 +0100
Subject: ethtool: move to its own directory
Patch-mainline: v5.6-rc1
Git-commit: 9ce48e5a09ea63a7867647af68caa0605d99757d
References: bsc#1176447
The ethtool netlink interface is going to be split into multiple files so
that it will be more convenient to put all of them in a separate directory
net/ethtool. Start by moving current ethtool.c with ioctl interface into
this directory and renaming it to ioctl.c.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
net/Makefile | 2 +-
net/core/Makefile | 2 +-
net/ethtool/Makefile | 3 +++
net/{core/ethtool.c => ethtool/ioctl.c} | 0
net/Makefile | 2
net/core/Makefile | 2
net/core/ethtool.c | 3116 ---------------------------------------------------
net/ethtool/Makefile | 3
net/ethtool/ioctl.c | 3116 +++++++++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 3121 insertions(+), 3118 deletions(-)
create mode 100644 net/ethtool/Makefile
rename net/{core/ethtool.c => ethtool/ioctl.c} (100%)
--- a/net/Makefile
+++ b/net/Makefile
@@ -13,7 +13,7 @@ obj-$(CONFIG_NET) += $(tmp-y)
# LLC has to be linked before the files in net/802/
obj-$(CONFIG_LLC) += llc/
-obj-$(CONFIG_NET) += ethernet/ 802/ sched/ netlink/ bpf/
+obj-$(CONFIG_NET) += ethernet/ 802/ sched/ netlink/ bpf/ ethtool/
obj-$(CONFIG_NETFILTER) += netfilter/
obj-$(CONFIG_INET) += ipv4/
obj-$(CONFIG_TLS) += tls/
--- a/net/core/Makefile
+++ b/net/core/Makefile
@@ -8,7 +8,7 @@ obj-y := sock.o request_sock.o skbuff.o
obj-$(CONFIG_SYSCTL) += sysctl_net_core.o
-obj-y += dev.o ethtool.o dev_addr_lists.o dst.o netevent.o \
+obj-y += dev.o dev_addr_lists.o dst.o netevent.o \
neighbour.o rtnetlink.o utils.o link_watch.o filter.o \
sock_diag.o dev_ioctl.o tso.o sock_reuseport.o \
fib_notifier.o xdp.o flow_offload.o
--- a/net/core/ethtool.c
+++ /dev/null
@@ -1,3116 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * net/core/ethtool.c - Ethtool ioctl handler
- * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
- *
- * This file is where we call all the ethtool_ops commands to get
- * the information ethtool needs.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/capability.h>
-#include <linux/errno.h>
-#include <linux/ethtool.h>
-#include <linux/netdevice.h>
-#include <linux/net_tstamp.h>
-#include <linux/phy.h>
-#include <linux/bitops.h>
-#include <linux/uaccess.h>
-#include <linux/vmalloc.h>
-#include <linux/sfp.h>
-#include <linux/slab.h>
-#include <linux/rtnetlink.h>
-#include <linux/sched/signal.h>
-#include <linux/net.h>
-#include <net/devlink.h>
-#include <net/xdp_sock.h>
-#include <net/flow_offload.h>
-
-/*
- * Some useful ethtool_ops methods that're device independent.
- * If we find that all drivers want to do the same thing here,
- * we can turn these into dev_() function calls.
- */
-
-u32 ethtool_op_get_link(struct net_device *dev)
-{
- return netif_carrier_ok(dev) ? 1 : 0;
-}
-EXPORT_SYMBOL(ethtool_op_get_link);
-
-int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
-{
- info->so_timestamping =
- SOF_TIMESTAMPING_TX_SOFTWARE |
- SOF_TIMESTAMPING_RX_SOFTWARE |
- SOF_TIMESTAMPING_SOFTWARE;
- info->phc_index = -1;
- return 0;
-}
-EXPORT_SYMBOL(ethtool_op_get_ts_info);
-
-/* Handlers for each ethtool command */
-
-#define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
-
-static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
- [NETIF_F_SG_BIT] = "tx-scatter-gather",
- [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
- [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic",
- [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6",
- [NETIF_F_HIGHDMA_BIT] = "highdma",
- [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist",
- [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert",
-
- [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse",
- [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
- [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert",
- [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse",
- [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter",
- [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged",
- [NETIF_F_GSO_BIT] = "tx-generic-segmentation",
- [NETIF_F_LLTX_BIT] = "tx-lockless",
- [NETIF_F_NETNS_LOCAL_BIT] = "netns-local",
- [NETIF_F_GRO_BIT] = "rx-gro",
- [NETIF_F_GRO_HW_BIT] = "rx-gro-hw",
- [NETIF_F_LRO_BIT] = "rx-lro",
-
- [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
- [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
- [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
- [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation",
- [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
- [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
- [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
- [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
- [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
- [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
- [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
- [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
- [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
- [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
- [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation",
- [NETIF_F_GSO_UDP_L4_BIT] = "tx-udp-segmentation",
-
- [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
- [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
- [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
- [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
- [NETIF_F_RXHASH_BIT] = "rx-hashing",
- [NETIF_F_RXCSUM_BIT] = "rx-checksum",
- [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
- [NETIF_F_LOOPBACK_BIT] = "loopback",
- [NETIF_F_RXFCS_BIT] = "rx-fcs",
- [NETIF_F_RXALL_BIT] = "rx-all",
- [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
- [NETIF_F_HW_TC_BIT] = "hw-tc-offload",
- [NETIF_F_HW_ESP_BIT] = "esp-hw-offload",
- [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload",
- [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload",
- [NETIF_F_HW_TLS_RECORD_BIT] = "tls-hw-record",
- [NETIF_F_HW_TLS_TX_BIT] = "tls-hw-tx-offload",
- [NETIF_F_HW_TLS_RX_BIT] = "tls-hw-rx-offload",
-};
-
-static const char
-rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
- [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
- [ETH_RSS_HASH_XOR_BIT] = "xor",
- [ETH_RSS_HASH_CRC32_BIT] = "crc32",
-};
-
-static const char
-tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
- [ETHTOOL_ID_UNSPEC] = "Unspec",
- [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
- [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
- [ETHTOOL_PFC_PREVENTION_TOUT] = "pfc-prevention-tout",
-};
-
-static const char
-phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
- [ETHTOOL_ID_UNSPEC] = "Unspec",
- [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
- [ETHTOOL_PHY_FAST_LINK_DOWN] = "phy-fast-link-down",
- [ETHTOOL_PHY_EDPD] = "phy-energy-detect-power-down",
-};
-
-static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
-{
- struct ethtool_gfeatures cmd = {
- .cmd = ETHTOOL_GFEATURES,
- .size = ETHTOOL_DEV_FEATURE_WORDS,
- };
- struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
- u32 __user *sizeaddr;
- u32 copy_size;
- int i;
-
- /* in case feature bits run out again */
- BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
-
- for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
- features[i].available = (u32)(dev->hw_features >> (32 * i));
- features[i].requested = (u32)(dev->wanted_features >> (32 * i));
- features[i].active = (u32)(dev->features >> (32 * i));
- features[i].never_changed =
- (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
- }
-
- sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
- if (get_user(copy_size, sizeaddr))
- return -EFAULT;
-
- if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
- copy_size = ETHTOOL_DEV_FEATURE_WORDS;
-
- if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
- return -EFAULT;
- useraddr += sizeof(cmd);
- if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
- return -EFAULT;
-
- return 0;
-}
-
-static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
-{
- struct ethtool_sfeatures cmd;
- struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
- netdev_features_t wanted = 0, valid = 0;
- int i, ret = 0;
-
- if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
- return -EFAULT;
- useraddr += sizeof(cmd);
-
- if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
- return -EINVAL;
-
- if (copy_from_user(features, useraddr, sizeof(features)))
- return -EFAULT;
-
- for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
- valid |= (netdev_features_t)features[i].valid << (32 * i);
- wanted |= (netdev_features_t)features[i].requested << (32 * i);
- }
-
- if (valid & ~NETIF_F_ETHTOOL_BITS)
- return -EINVAL;
-
- if (valid & ~dev->hw_features) {
- valid &= dev->hw_features;
- ret |= ETHTOOL_F_UNSUPPORTED;
- }
-
- dev->wanted_features &= ~valid;
- dev->wanted_features |= wanted & valid;
- __netdev_update_features(dev);
-
- if ((dev->wanted_features ^ dev->features) & valid)
- ret |= ETHTOOL_F_WISH;
-
- return ret;
-}
-
-static int __ethtool_get_sset_count(struct net_device *dev, int sset)
-{
- const struct ethtool_ops *ops = dev->ethtool_ops;
-
- if (sset == ETH_SS_FEATURES)
- return ARRAY_SIZE(netdev_features_strings);
-
- if (sset == ETH_SS_RSS_HASH_FUNCS)
- return ARRAY_SIZE(rss_hash_func_strings);
-
- if (sset == ETH_SS_TUNABLES)
- return ARRAY_SIZE(tunable_strings);
-
- if (sset == ETH_SS_PHY_TUNABLES)
- return ARRAY_SIZE(phy_tunable_strings);
-
- if (sset == ETH_SS_PHY_STATS && dev->phydev &&
- !ops->get_ethtool_phy_stats)
- return phy_ethtool_get_sset_count(dev->phydev);
-
- if (ops->get_sset_count && ops->get_strings)
- return ops->get_sset_count(dev, sset);
- else
- return -EOPNOTSUPP;
-}
-
-static void __ethtool_get_strings(struct net_device *dev,
- u32 stringset, u8 *data)
-{
- const struct ethtool_ops *ops = dev->ethtool_ops;
-
- if (stringset == ETH_SS_FEATURES)
- memcpy(data, netdev_features_strings,
- sizeof(netdev_features_strings));
- else if (stringset == ETH_SS_RSS_HASH_FUNCS)
- memcpy(data, rss_hash_func_strings,
- sizeof(rss_hash_func_strings));
- else if (stringset == ETH_SS_TUNABLES)
- memcpy(data, tunable_strings, sizeof(tunable_strings));
- else if (stringset == ETH_SS_PHY_TUNABLES)
- memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
- else if (stringset == ETH_SS_PHY_STATS && dev->phydev &&
- !ops->get_ethtool_phy_stats)
- phy_ethtool_get_strings(dev->phydev, data);
- else
- /* ops->get_strings is valid because checked earlier */
- ops->get_strings(dev, stringset, data);
-}
-
-static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
-{
- /* feature masks of legacy discrete ethtool ops */
-
- switch (eth_cmd) {
- case ETHTOOL_GTXCSUM:
- case ETHTOOL_STXCSUM:
- return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC;
- case ETHTOOL_GRXCSUM:
- case ETHTOOL_SRXCSUM:
- return NETIF_F_RXCSUM;
- case ETHTOOL_GSG:
- case ETHTOOL_SSG:
- return NETIF_F_SG;
- case ETHTOOL_GTSO:
- case ETHTOOL_STSO:
- return NETIF_F_ALL_TSO;
- case ETHTOOL_GGSO:
- case ETHTOOL_SGSO:
- return NETIF_F_GSO;
- case ETHTOOL_GGRO:
- case ETHTOOL_SGRO:
- return NETIF_F_GRO;
- default:
- BUG();
- }
-}
-
-static int ethtool_get_one_feature(struct net_device *dev,
- char __user *useraddr, u32 ethcmd)
-{
- netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
- struct ethtool_value edata = {
- .cmd = ethcmd,
- .data = !!(dev->features & mask),
- };
-
- if (copy_to_user(useraddr, &edata, sizeof(edata)))
- return -EFAULT;
- return 0;
-}
-
-static int ethtool_set_one_feature(struct net_device *dev,
- void __user *useraddr, u32 ethcmd)
-{
- struct ethtool_value edata;
- netdev_features_t mask;
-
- if (copy_from_user(&edata, useraddr, sizeof(edata)))
- return -EFAULT;
-
- mask = ethtool_get_feature_mask(ethcmd);
- mask &= dev->hw_features;
- if (!mask)
- return -EOPNOTSUPP;
-
- if (edata.data)
- dev->wanted_features |= mask;
- else
- dev->wanted_features &= ~mask;
-
- __netdev_update_features(dev);
-
- return 0;
-}
-
-#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
- ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
-#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
- NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
- NETIF_F_RXHASH)
-
-static u32 __ethtool_get_flags(struct net_device *dev)
-{
- u32 flags = 0;
-
- if (dev->features & NETIF_F_LRO)
- flags |= ETH_FLAG_LRO;
- if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
- flags |= ETH_FLAG_RXVLAN;
- if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
- flags |= ETH_FLAG_TXVLAN;
- if (dev->features & NETIF_F_NTUPLE)
- flags |= ETH_FLAG_NTUPLE;
- if (dev->features & NETIF_F_RXHASH)
- flags |= ETH_FLAG_RXHASH;
-
- return flags;
-}
-
-static int __ethtool_set_flags(struct net_device *dev, u32 data)
-{
- netdev_features_t features = 0, changed;
-
- if (data & ~ETH_ALL_FLAGS)
- return -EINVAL;
-
- if (data & ETH_FLAG_LRO)
- features |= NETIF_F_LRO;
- if (data & ETH_FLAG_RXVLAN)
- features |= NETIF_F_HW_VLAN_CTAG_RX;
- if (data & ETH_FLAG_TXVLAN)
- features |= NETIF_F_HW_VLAN_CTAG_TX;
- if (data & ETH_FLAG_NTUPLE)
- features |= NETIF_F_NTUPLE;
- if (data & ETH_FLAG_RXHASH)
- features |= NETIF_F_RXHASH;
-
- /* allow changing only bits set in hw_features */
- changed = (features ^ dev->features) & ETH_ALL_FEATURES;
- if (changed & ~dev->hw_features)
- return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
-
- dev->wanted_features =
- (dev->wanted_features & ~changed) | (features & changed);
-
- __netdev_update_features(dev);
-
- return 0;
-}
-
-/* Given two link masks, AND them together and save the result in dst. */
-void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
- struct ethtool_link_ksettings *src)
-{
- unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
- unsigned int idx = 0;
-
- for (; idx < size; idx++) {
- dst->link_modes.supported[idx] &=
- src->link_modes.supported[idx];
- dst->link_modes.advertising[idx] &=
- src->link_modes.advertising[idx];
- }
-}
-EXPORT_SYMBOL(ethtool_intersect_link_masks);
-
-void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
- u32 legacy_u32)
-{
- bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
- dst[0] = legacy_u32;
-}
-EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
-
-/* return false if src had higher bits set. lower bits always updated. */
-bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
- const unsigned long *src)
-{
- bool retval = true;
-
- /* TODO: following test will soon always be true */
- if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
- __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
-
- bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
- bitmap_fill(ext, 32);
- bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
- if (bitmap_intersects(ext, src,
- __ETHTOOL_LINK_MODE_MASK_NBITS)) {
- /* src mask goes beyond bit 31 */
- retval = false;
- }
- }
- *legacy_u32 = src[0];
- return retval;
-}
-EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
-
-/* return false if legacy contained non-0 deprecated fields
- * maxtxpkt/maxrxpkt. rest of ksettings always updated
- */
-static bool
-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->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;
- legacy_settings->transceiver
- = link_ksettings->base.transceiver;
- 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. */
-int __ethtool_get_link_ksettings(struct net_device *dev,
- struct ethtool_link_ksettings *link_ksettings)
-{
- ASSERT_RTNL();
-
- if (!dev->ethtool_ops->get_link_ksettings)
- return -EOPNOTSUPP;
-
- memset(link_ksettings, 0, sizeof(*link_ksettings));
- return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings);
-}
-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_arr32(to->link_modes.supported,
- link_usettings.link_modes.supported,
- __ETHTOOL_LINK_MODE_MASK_NBITS);
- bitmap_from_arr32(to->link_modes.advertising,
- link_usettings.link_modes.advertising,
- __ETHTOOL_LINK_MODE_MASK_NBITS);
- bitmap_from_arr32(to->link_modes.lp_advertising,
- link_usettings.link_modes.lp_advertising,
- __ETHTOOL_LINK_MODE_MASK_NBITS);
-
- 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_arr32(link_usettings.link_modes.supported,
- from->link_modes.supported,
- __ETHTOOL_LINK_MODE_MASK_NBITS);
- bitmap_to_arr32(link_usettings.link_modes.advertising,
- from->link_modes.advertising,
- __ETHTOOL_LINK_MODE_MASK_NBITS);
- bitmap_to_arr32(link_usettings.link_modes.lp_advertising,
- 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. */
-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. */
-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);
-}
-
-/* Query device for its ethtool_cmd settings.
- *
- * Backward compatibility note: for compatibility with legacy ethtool, this is
- * now implemented via get_link_ksettings. When driver reports 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). Deprecated fields from
- * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero.
- */
-static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
-{
- struct ethtool_link_ksettings link_ksettings;
- struct ethtool_cmd cmd;
- int err;
-
- ASSERT_RTNL();
- if (!dev->ethtool_ops->get_link_ksettings)
- return -EOPNOTSUPP;
-
- memset(&link_ksettings, 0, sizeof(link_ksettings));
- err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
- if (err < 0)
- return err;
- convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings);
-
- /* send a sensible cmd tag back to user */
- cmd.cmd = ETHTOOL_GSET;
-
- 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 is
- * now always implemented via set_link_settings. When 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_link_ksettings link_ksettings;
- struct ethtool_cmd cmd;
-
- ASSERT_RTNL();
-
- if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
- return -EFAULT;
- if (!dev->ethtool_ops->set_link_ksettings)
- return -EOPNOTSUPP;
-
- if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd))
- return -EINVAL;
- link_ksettings.base.link_mode_masks_nwords =
- __ETHTOOL_LINK_MODE_MASK_NU32;
- return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
-}
-
-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) {
- int ret = ops->get_regs_len(dev);
-
- if (ret > 0)
- info.regdump_len = ret;
- }
-
- if (ops->get_eeprom_len)
- info.eedump_len = ops->get_eeprom_len(dev);
-
- if (!info.fw_version[0])
- devlink_compat_running_version(dev, info.fw_version,
- sizeof(info.fw_version));
-
- 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 = kcalloc(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 FLOW_RSS was requested then user-space must be using the
- * new definition, as FLOW_RSS is newer.
- */
- if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) {
- info_size = sizeof(info);
- if (copy_from_user(&info, useraddr, info_size))
- return -EFAULT;
- /* Since malicious users may modify the original data,
- * we need to check whether FLOW_RSS is still requested.
- */
- if (!(info.flow_type & FLOW_RSS))
- return -EINVAL;
- }
-
- if (info.cmd != cmd)
- return -EINVAL;
-
- if (info.cmd == ETHTOOL_GRXCLSRLALL) {
- if (info.rule_cnt > 0) {
- if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
- rule_buf = kcalloc(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.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
- return -EINVAL;
- /* Most drivers don't handle rss_context, check it's 0 as well */
- if (rxfh.rss_context && !ops->get_rxfh_context)
- return -EOPNOTSUPP;
-
- 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;
-
- if (rxfh.rss_context)
- ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey,
- &dev_hfunc,
- rxfh.rss_context);
- else
- 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]);
- bool delete = false;
-
- 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.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
- return -EINVAL;
- /* Most drivers don't handle rss_context, check it's 0 as well */
- if (rxfh.rss_context && !ops->set_rxfh_context)
- return -EOPNOTSUPP;
-
- /* 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 (master
- * context) or delete the context (other RSS contexts).
- * 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) {
- if (rxfh.rss_context == 0) {
- indir = (u32 *)rss_config;
- for (i = 0; i < dev_indir_size; i++)
- indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
- } else {
- delete = true;
- }
- }
-
- 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;
- }
- }
-
- if (rxfh.rss_context)
- ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc,
- &rxfh.rss_context, delete);
- else
- ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
- if (ret)
- goto out;
-
- if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context),
- &rxfh.rss_context, sizeof(rxfh.rss_context)))
- ret = -EFAULT;
-
- if (!rxfh.rss_context) {
- /* 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 (reglen <= 0)
- return reglen;
-
- if (regs.len > reglen)
- regs.len = reglen;
-
- regbuf = vzalloc(reglen);
- if (!regbuf)
- return -ENOMEM;
-
- if (regs.len < reglen)
- reglen = regs.len;
-
- ops->get_regs(dev, ®s, regbuf);
-
- ret = -EFAULT;
- if (copy_to_user(useraddr, ®s, sizeof(regs)))
- goto out;
- useraddr += offsetof(struct ethtool_regs, data);
- if (copy_to_user(useraddr, regbuf, reglen))
- 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;
-
- if (!dev->ethtool_ops->get_wol)
- return -EOPNOTSUPP;
-
- memset(&wol, 0, sizeof(struct ethtool_wolinfo));
- wol.cmd = ETHTOOL_GWOL;
- 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;
- int ret;
-
- if (!dev->ethtool_ops->set_wol)
- return -EOPNOTSUPP;
-
- if (copy_from_user(&wol, useraddr, sizeof(wol)))
- return -EFAULT;
-
- ret = dev->ethtool_ops->set_wol(dev, &wol);
- if (ret)
- return ret;
-
- dev->wol_enabled = !!wol.wolopts;
-
- return 0;
-}
-
-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, max = { .cmd = ETHTOOL_GRINGPARAM };
-
- if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam)
- return -EOPNOTSUPP;
-
- if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
- return -EFAULT;
-
- dev->ethtool_ops->get_ringparam(dev, &max);
-
- /* ensure new ring parameters are within the maximums */
- if (ringparam.rx_pending > max.rx_max_pending ||
- ringparam.rx_mini_pending > max.rx_mini_max_pending ||
- ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending ||
- ringparam.tx_pending > max.tx_max_pending)
- return -EINVAL;
-
- 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, curr = { .cmd = ETHTOOL_GCHANNELS };
- u16 from_channel, to_channel;
- u32 max_rx_in_use = 0;
- unsigned int i;
-
- 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, &curr);
-
- /* ensure new counts are within the maximums */
- if (channels.rx_count > curr.max_rx ||
- channels.tx_count > curr.max_tx ||
- channels.combined_count > curr.max_combined ||
- channels.other_count > curr.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;
-
- /* Disabling channels, query zero-copy AF_XDP sockets */
- from_channel = channels.combined_count +
- min(channels.rx_count, channels.tx_count);
- to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count);
- for (i = from_channel; i < to_channel; i++)
- if (xdp_get_umem_from_qid(dev, i))
- 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 = { .cmd = 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_array(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;
-
- if (gstrings.len) {
- data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN));
- if (!data)
- return -ENOMEM;
-
- __ethtool_get_strings(dev, gstrings.string_set, data);
- } else {
- data = NULL;
- }
-
- 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;
-
- if (n_stats) {
- data = vzalloc(array_size(n_stats, sizeof(u64)));
- if (!data)
- return -ENOMEM;
- ops->get_ethtool_stats(dev, &stats, data);
- } else {
- data = NULL;
- }
-
- 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)
-{
- const struct ethtool_ops *ops = dev->ethtool_ops;
- struct phy_device *phydev = dev->phydev;
- struct ethtool_stats stats;
- u64 *data;
- int ret, n_stats;
-
- if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count))
- return -EOPNOTSUPP;
-
- if (dev->phydev && !ops->get_ethtool_phy_stats)
- n_stats = phy_ethtool_get_sset_count(dev->phydev);
- else
- n_stats = ops->get_sset_count(dev, ETH_SS_PHY_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;
-
- if (n_stats) {
- data = vzalloc(array_size(n_stats, sizeof(u64)));
- if (!data)
- return -ENOMEM;
-
- if (dev->phydev && !ops->get_ethtool_phy_stats) {
- ret = phy_ethtool_get_stats(dev->phydev, &stats, data);
- if (ret < 0)
- goto out;
- } else {
- ops->get_ethtool_phy_stats(dev, &stats, data);
- }
- } else {
- data = NULL;
- }
-
- 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;
- efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
-
- if (!dev->ethtool_ops->flash_device)
- return devlink_compat_flash_update(dev, efl.data);
-
- 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 (dev->sfp_bus)
- return sfp_get_module_info(dev->sfp_bus, modinfo);
-
- 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 (dev->sfp_bus)
- return sfp_get_module_eeprom(dev->sfp_bus, ee, data);
-
- 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;
- case ETHTOOL_PFC_PREVENTION_TOUT:
- if (tuna->len != sizeof(u16) ||
- tuna->type_id != ETHTOOL_TUNABLE_U16)
- 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;
- useraddr += sizeof(tuna);
- data = memdup_user(useraddr, tuna.len);
- if (IS_ERR(data))
- return PTR_ERR(data);
- ret = ops->set_tunable(dev, &tuna, data);
-
- kfree(data);
- return ret;
-}
-
-static noinline_for_stack 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_arr32(queue_mask, per_queue_opt->queue_mask,
- MAX_NUM_QUEUE);
-
- 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 noinline_for_stack 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_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE);
- 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 noinline_for_stack ethtool_set_per_queue(struct net_device *dev,
- void __user *useraddr, u32 sub_cmd)
-{
- struct ethtool_per_queue_op per_queue_opt;
-
- if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
- return -EFAULT;
-
- if (per_queue_opt.sub_command != sub_cmd)
- return -EINVAL;
-
- 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:
- case ETHTOOL_PHY_FAST_LINK_DOWN:
- if (tuna->len != sizeof(u8) ||
- tuna->type_id != ETHTOOL_TUNABLE_U8)
- return -EINVAL;
- break;
- case ETHTOOL_PHY_EDPD:
- if (tuna->len != sizeof(u16) ||
- tuna->type_id != ETHTOOL_TUNABLE_U16)
- 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;
- useraddr += sizeof(tuna);
- data = memdup_user(useraddr, tuna.len);
- if (IS_ERR(data))
- return PTR_ERR(data);
- mutex_lock(&phydev->lock);
- ret = phydev->drv->set_tunable(phydev, &tuna, data);
- mutex_unlock(&phydev->lock);
-
- kfree(data);
- return ret;
-}
-
-static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
-{
- struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM };
- int rc;
-
- if (!dev->ethtool_ops->get_fecparam)
- return -EOPNOTSUPP;
-
- rc = dev->ethtool_ops->get_fecparam(dev, &fecparam);
- if (rc)
- return rc;
-
- if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
- return -EFAULT;
- return 0;
-}
-
-static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
-{
- struct ethtool_fecparam fecparam;
-
- if (!dev->ethtool_ops->set_fecparam)
- return -EOPNOTSUPP;
-
- if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
- return -EFAULT;
-
- return dev->ethtool_ops->set_fecparam(dev, &fecparam);
-}
-
-/* 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:
- case ETHTOOL_GFECPARAM:
- 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_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_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, sub_cmd);
- 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;
- case ETHTOOL_GFECPARAM:
- rc = ethtool_get_fecparam(dev, useraddr);
- break;
- case ETHTOOL_SFECPARAM:
- rc = ethtool_set_fecparam(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;
-}
-
-struct ethtool_rx_flow_key {
- struct flow_dissector_key_basic basic;
- union {
- struct flow_dissector_key_ipv4_addrs ipv4;
- struct flow_dissector_key_ipv6_addrs ipv6;
- };
- struct flow_dissector_key_ports tp;
- struct flow_dissector_key_ip ip;
- struct flow_dissector_key_vlan vlan;
- struct flow_dissector_key_eth_addrs eth_addrs;
-} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
-
-struct ethtool_rx_flow_match {
- struct flow_dissector dissector;
- struct ethtool_rx_flow_key key;
- struct ethtool_rx_flow_key mask;
-};
-
-struct ethtool_rx_flow_rule *
-ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input)
-{
- const struct ethtool_rx_flow_spec *fs = input->fs;
- static struct in6_addr zero_addr = {};
- struct ethtool_rx_flow_match *match;
- struct ethtool_rx_flow_rule *flow;
- struct flow_action_entry *act;
-
- flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) +
- sizeof(struct ethtool_rx_flow_match), GFP_KERNEL);
- if (!flow)
- return ERR_PTR(-ENOMEM);
-
- /* ethtool_rx supports only one single action per rule. */
- flow->rule = flow_rule_alloc(1);
- if (!flow->rule) {
- kfree(flow);
- return ERR_PTR(-ENOMEM);
- }
-
- match = (struct ethtool_rx_flow_match *)flow->priv;
- flow->rule->match.dissector = &match->dissector;
- flow->rule->match.mask = &match->mask;
- flow->rule->match.key = &match->key;
-
- match->mask.basic.n_proto = htons(0xffff);
-
- switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
- case ETHER_FLOW: {
- const struct ethhdr *ether_spec, *ether_m_spec;
-
- ether_spec = &fs->h_u.ether_spec;
- ether_m_spec = &fs->m_u.ether_spec;
-
- if (!is_zero_ether_addr(ether_m_spec->h_source)) {
- ether_addr_copy(match->key.eth_addrs.src,
- ether_spec->h_source);
- ether_addr_copy(match->mask.eth_addrs.src,
- ether_m_spec->h_source);
- }
- if (!is_zero_ether_addr(ether_m_spec->h_dest)) {
- ether_addr_copy(match->key.eth_addrs.dst,
- ether_spec->h_dest);
- ether_addr_copy(match->mask.eth_addrs.dst,
- ether_m_spec->h_dest);
- }
- if (ether_m_spec->h_proto) {
- match->key.basic.n_proto = ether_spec->h_proto;
- match->mask.basic.n_proto = ether_m_spec->h_proto;
- }
- }
- break;
- case TCP_V4_FLOW:
- case UDP_V4_FLOW: {
- const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec;
-
- match->key.basic.n_proto = htons(ETH_P_IP);
-
- v4_spec = &fs->h_u.tcp_ip4_spec;
- v4_m_spec = &fs->m_u.tcp_ip4_spec;
-
- if (v4_m_spec->ip4src) {
- match->key.ipv4.src = v4_spec->ip4src;
- match->mask.ipv4.src = v4_m_spec->ip4src;
- }
- if (v4_m_spec->ip4dst) {
- match->key.ipv4.dst = v4_spec->ip4dst;
- match->mask.ipv4.dst = v4_m_spec->ip4dst;
- }
- if (v4_m_spec->ip4src ||
- v4_m_spec->ip4dst) {
- match->dissector.used_keys |=
- BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS);
- match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] =
- offsetof(struct ethtool_rx_flow_key, ipv4);
- }
- if (v4_m_spec->psrc) {
- match->key.tp.src = v4_spec->psrc;
- match->mask.tp.src = v4_m_spec->psrc;
- }
- if (v4_m_spec->pdst) {
- match->key.tp.dst = v4_spec->pdst;
- match->mask.tp.dst = v4_m_spec->pdst;
- }
- if (v4_m_spec->psrc ||
- v4_m_spec->pdst) {
- match->dissector.used_keys |=
- BIT(FLOW_DISSECTOR_KEY_PORTS);
- match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
- offsetof(struct ethtool_rx_flow_key, tp);
- }
- if (v4_m_spec->tos) {
- match->key.ip.tos = v4_spec->tos;
- match->mask.ip.tos = v4_m_spec->tos;
- match->dissector.used_keys |=
- BIT(FLOW_DISSECTOR_KEY_IP);
- match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
- offsetof(struct ethtool_rx_flow_key, ip);
- }
- }
- break;
- case TCP_V6_FLOW:
- case UDP_V6_FLOW: {
- const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec;
-
- match->key.basic.n_proto = htons(ETH_P_IPV6);
-
- v6_spec = &fs->h_u.tcp_ip6_spec;
- v6_m_spec = &fs->m_u.tcp_ip6_spec;
- if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) {
- memcpy(&match->key.ipv6.src, v6_spec->ip6src,
- sizeof(match->key.ipv6.src));
- memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src,
- sizeof(match->mask.ipv6.src));
- }
- if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) {
- memcpy(&match->key.ipv6.dst, v6_spec->ip6dst,
- sizeof(match->key.ipv6.dst));
- memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst,
- sizeof(match->mask.ipv6.dst));
- }
- if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) ||
- memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) {
- match->dissector.used_keys |=
- BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS);
- match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] =
- offsetof(struct ethtool_rx_flow_key, ipv6);
- }
- if (v6_m_spec->psrc) {
- match->key.tp.src = v6_spec->psrc;
- match->mask.tp.src = v6_m_spec->psrc;
- }
- if (v6_m_spec->pdst) {
- match->key.tp.dst = v6_spec->pdst;
- match->mask.tp.dst = v6_m_spec->pdst;
- }
- if (v6_m_spec->psrc ||
- v6_m_spec->pdst) {
- match->dissector.used_keys |=
- BIT(FLOW_DISSECTOR_KEY_PORTS);
- match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
- offsetof(struct ethtool_rx_flow_key, tp);
- }
- if (v6_m_spec->tclass) {
- match->key.ip.tos = v6_spec->tclass;
- match->mask.ip.tos = v6_m_spec->tclass;
- match->dissector.used_keys |=
- BIT(FLOW_DISSECTOR_KEY_IP);
- match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
- offsetof(struct ethtool_rx_flow_key, ip);
- }
- }
- break;
- default:
- ethtool_rx_flow_rule_destroy(flow);
- return ERR_PTR(-EINVAL);
- }
-
- switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
- case TCP_V4_FLOW:
- case TCP_V6_FLOW:
- match->key.basic.ip_proto = IPPROTO_TCP;
- break;
- case UDP_V4_FLOW:
- case UDP_V6_FLOW:
- match->key.basic.ip_proto = IPPROTO_UDP;
- break;
- }
- match->mask.basic.ip_proto = 0xff;
-
- match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC);
- match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] =
- offsetof(struct ethtool_rx_flow_key, basic);
-
- if (fs->flow_type & FLOW_EXT) {
- const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
- const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
-
- if (ext_m_spec->vlan_etype) {
- match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype;
- match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype;
- }
-
- if (ext_m_spec->vlan_tci) {
- match->key.vlan.vlan_id =
- ntohs(ext_h_spec->vlan_tci) & 0x0fff;
- match->mask.vlan.vlan_id =
- ntohs(ext_m_spec->vlan_tci) & 0x0fff;
-
- match->key.vlan.vlan_dei =
- !!(ext_h_spec->vlan_tci & htons(0x1000));
- match->mask.vlan.vlan_dei =
- !!(ext_m_spec->vlan_tci & htons(0x1000));
-
- match->key.vlan.vlan_priority =
- (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13;
- match->mask.vlan.vlan_priority =
- (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13;
- }
-
- if (ext_m_spec->vlan_etype ||
- ext_m_spec->vlan_tci) {
- match->dissector.used_keys |=
- BIT(FLOW_DISSECTOR_KEY_VLAN);
- match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] =
- offsetof(struct ethtool_rx_flow_key, vlan);
- }
- }
- if (fs->flow_type & FLOW_MAC_EXT) {
- const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
- const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
-
- memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest,
- ETH_ALEN);
- memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest,
- ETH_ALEN);
-
- match->dissector.used_keys |=
- BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS);
- match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] =
- offsetof(struct ethtool_rx_flow_key, eth_addrs);
- }
-
- act = &flow->rule->action.entries[0];
- switch (fs->ring_cookie) {
- case RX_CLS_FLOW_DISC:
- act->id = FLOW_ACTION_DROP;
- break;
- case RX_CLS_FLOW_WAKE:
- act->id = FLOW_ACTION_WAKE;
- break;
- default:
- act->id = FLOW_ACTION_QUEUE;
- if (fs->flow_type & FLOW_RSS)
- act->queue.ctx = input->rss_ctx;
-
- act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie);
- act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie);
- break;
- }
-
- return flow;
-}
-EXPORT_SYMBOL(ethtool_rx_flow_rule_create);
-
-void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow)
-{
- kfree(flow->rule);
- kfree(flow);
-}
-EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy);
--- /dev/null
+++ b/net/ethtool/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+obj-y += ioctl.o
--- /dev/null
+++ b/net/ethtool/ioctl.c
@@ -0,0 +1,3116 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * net/core/ethtool.c - Ethtool ioctl handler
+ * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
+ *
+ * This file is where we call all the ethtool_ops commands to get
+ * the information ethtool needs.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/capability.h>
+#include <linux/errno.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include <linux/net_tstamp.h>
+#include <linux/phy.h>
+#include <linux/bitops.h>
+#include <linux/uaccess.h>
+#include <linux/vmalloc.h>
+#include <linux/sfp.h>
+#include <linux/slab.h>
+#include <linux/rtnetlink.h>
+#include <linux/sched/signal.h>
+#include <linux/net.h>
+#include <net/devlink.h>
+#include <net/xdp_sock.h>
+#include <net/flow_offload.h>
+
+/*
+ * Some useful ethtool_ops methods that're device independent.
+ * If we find that all drivers want to do the same thing here,
+ * we can turn these into dev_() function calls.
+ */
+
+u32 ethtool_op_get_link(struct net_device *dev)
+{
+ return netif_carrier_ok(dev) ? 1 : 0;
+}
+EXPORT_SYMBOL(ethtool_op_get_link);
+
+int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
+{
+ info->so_timestamping =
+ SOF_TIMESTAMPING_TX_SOFTWARE |
+ SOF_TIMESTAMPING_RX_SOFTWARE |
+ SOF_TIMESTAMPING_SOFTWARE;
+ info->phc_index = -1;
+ return 0;
+}
+EXPORT_SYMBOL(ethtool_op_get_ts_info);
+
+/* Handlers for each ethtool command */
+
+#define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
+
+static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
+ [NETIF_F_SG_BIT] = "tx-scatter-gather",
+ [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
+ [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic",
+ [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6",
+ [NETIF_F_HIGHDMA_BIT] = "highdma",
+ [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist",
+ [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert",
+
+ [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse",
+ [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
+ [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert",
+ [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse",
+ [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter",
+ [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged",
+ [NETIF_F_GSO_BIT] = "tx-generic-segmentation",
+ [NETIF_F_LLTX_BIT] = "tx-lockless",
+ [NETIF_F_NETNS_LOCAL_BIT] = "netns-local",
+ [NETIF_F_GRO_BIT] = "rx-gro",
+ [NETIF_F_GRO_HW_BIT] = "rx-gro-hw",
+ [NETIF_F_LRO_BIT] = "rx-lro",
+
+ [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
+ [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
+ [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
+ [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation",
+ [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
+ [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
+ [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
+ [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
+ [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
+ [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
+ [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
+ [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
+ [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
+ [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
+ [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation",
+ [NETIF_F_GSO_UDP_L4_BIT] = "tx-udp-segmentation",
+
+ [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
+ [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
+ [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
+ [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
+ [NETIF_F_RXHASH_BIT] = "rx-hashing",
+ [NETIF_F_RXCSUM_BIT] = "rx-checksum",
+ [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
+ [NETIF_F_LOOPBACK_BIT] = "loopback",
+ [NETIF_F_RXFCS_BIT] = "rx-fcs",
+ [NETIF_F_RXALL_BIT] = "rx-all",
+ [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
+ [NETIF_F_HW_TC_BIT] = "hw-tc-offload",
+ [NETIF_F_HW_ESP_BIT] = "esp-hw-offload",
+ [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload",
+ [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload",
+ [NETIF_F_HW_TLS_RECORD_BIT] = "tls-hw-record",
+ [NETIF_F_HW_TLS_TX_BIT] = "tls-hw-tx-offload",
+ [NETIF_F_HW_TLS_RX_BIT] = "tls-hw-rx-offload",
+};
+
+static const char
+rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
+ [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
+ [ETH_RSS_HASH_XOR_BIT] = "xor",
+ [ETH_RSS_HASH_CRC32_BIT] = "crc32",
+};
+
+static const char
+tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
+ [ETHTOOL_ID_UNSPEC] = "Unspec",
+ [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
+ [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
+ [ETHTOOL_PFC_PREVENTION_TOUT] = "pfc-prevention-tout",
+};
+
+static const char
+phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
+ [ETHTOOL_ID_UNSPEC] = "Unspec",
+ [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
+ [ETHTOOL_PHY_FAST_LINK_DOWN] = "phy-fast-link-down",
+ [ETHTOOL_PHY_EDPD] = "phy-energy-detect-power-down",
+};
+
+static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
+{
+ struct ethtool_gfeatures cmd = {
+ .cmd = ETHTOOL_GFEATURES,
+ .size = ETHTOOL_DEV_FEATURE_WORDS,
+ };
+ struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
+ u32 __user *sizeaddr;
+ u32 copy_size;
+ int i;
+
+ /* in case feature bits run out again */
+ BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
+
+ for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
+ features[i].available = (u32)(dev->hw_features >> (32 * i));
+ features[i].requested = (u32)(dev->wanted_features >> (32 * i));
+ features[i].active = (u32)(dev->features >> (32 * i));
+ features[i].never_changed =
+ (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
+ }
+
+ sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
+ if (get_user(copy_size, sizeaddr))
+ return -EFAULT;
+
+ if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
+ copy_size = ETHTOOL_DEV_FEATURE_WORDS;
+
+ if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
+ return -EFAULT;
+ useraddr += sizeof(cmd);
+ if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
+{
+ struct ethtool_sfeatures cmd;
+ struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
+ netdev_features_t wanted = 0, valid = 0;
+ int i, ret = 0;
+
+ if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
+ return -EFAULT;
+ useraddr += sizeof(cmd);
+
+ if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
+ return -EINVAL;
+
+ if (copy_from_user(features, useraddr, sizeof(features)))
+ return -EFAULT;
+
+ for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
+ valid |= (netdev_features_t)features[i].valid << (32 * i);
+ wanted |= (netdev_features_t)features[i].requested << (32 * i);
+ }
+
+ if (valid & ~NETIF_F_ETHTOOL_BITS)
+ return -EINVAL;
+
+ if (valid & ~dev->hw_features) {
+ valid &= dev->hw_features;
+ ret |= ETHTOOL_F_UNSUPPORTED;
+ }
+
+ dev->wanted_features &= ~valid;
+ dev->wanted_features |= wanted & valid;
+ __netdev_update_features(dev);
+
+ if ((dev->wanted_features ^ dev->features) & valid)
+ ret |= ETHTOOL_F_WISH;
+
+ return ret;
+}
+
+static int __ethtool_get_sset_count(struct net_device *dev, int sset)
+{
+ const struct ethtool_ops *ops = dev->ethtool_ops;
+
+ if (sset == ETH_SS_FEATURES)
+ return ARRAY_SIZE(netdev_features_strings);
+
+ if (sset == ETH_SS_RSS_HASH_FUNCS)
+ return ARRAY_SIZE(rss_hash_func_strings);
+
+ if (sset == ETH_SS_TUNABLES)
+ return ARRAY_SIZE(tunable_strings);
+
+ if (sset == ETH_SS_PHY_TUNABLES)
+ return ARRAY_SIZE(phy_tunable_strings);
+
+ if (sset == ETH_SS_PHY_STATS && dev->phydev &&
+ !ops->get_ethtool_phy_stats)
+ return phy_ethtool_get_sset_count(dev->phydev);
+
+ if (ops->get_sset_count && ops->get_strings)
+ return ops->get_sset_count(dev, sset);
+ else
+ return -EOPNOTSUPP;
+}
+
+static void __ethtool_get_strings(struct net_device *dev,
+ u32 stringset, u8 *data)
+{
+ const struct ethtool_ops *ops = dev->ethtool_ops;
+
+ if (stringset == ETH_SS_FEATURES)
+ memcpy(data, netdev_features_strings,
+ sizeof(netdev_features_strings));
+ else if (stringset == ETH_SS_RSS_HASH_FUNCS)
+ memcpy(data, rss_hash_func_strings,
+ sizeof(rss_hash_func_strings));
+ else if (stringset == ETH_SS_TUNABLES)
+ memcpy(data, tunable_strings, sizeof(tunable_strings));
+ else if (stringset == ETH_SS_PHY_TUNABLES)
+ memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
+ else if (stringset == ETH_SS_PHY_STATS && dev->phydev &&
+ !ops->get_ethtool_phy_stats)
+ phy_ethtool_get_strings(dev->phydev, data);
+ else
+ /* ops->get_strings is valid because checked earlier */
+ ops->get_strings(dev, stringset, data);
+}
+
+static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
+{
+ /* feature masks of legacy discrete ethtool ops */
+
+ switch (eth_cmd) {
+ case ETHTOOL_GTXCSUM:
+ case ETHTOOL_STXCSUM:
+ return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC;
+ case ETHTOOL_GRXCSUM:
+ case ETHTOOL_SRXCSUM:
+ return NETIF_F_RXCSUM;
+ case ETHTOOL_GSG:
+ case ETHTOOL_SSG:
+ return NETIF_F_SG;
+ case ETHTOOL_GTSO:
+ case ETHTOOL_STSO:
+ return NETIF_F_ALL_TSO;
+ case ETHTOOL_GGSO:
+ case ETHTOOL_SGSO:
+ return NETIF_F_GSO;
+ case ETHTOOL_GGRO:
+ case ETHTOOL_SGRO:
+ return NETIF_F_GRO;
+ default:
+ BUG();
+ }
+}
+
+static int ethtool_get_one_feature(struct net_device *dev,
+ char __user *useraddr, u32 ethcmd)
+{
+ netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
+ struct ethtool_value edata = {
+ .cmd = ethcmd,
+ .data = !!(dev->features & mask),
+ };
+
+ if (copy_to_user(useraddr, &edata, sizeof(edata)))
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_one_feature(struct net_device *dev,
+ void __user *useraddr, u32 ethcmd)
+{
+ struct ethtool_value edata;
+ netdev_features_t mask;
+
+ if (copy_from_user(&edata, useraddr, sizeof(edata)))
+ return -EFAULT;
+
+ mask = ethtool_get_feature_mask(ethcmd);
+ mask &= dev->hw_features;
+ if (!mask)
+ return -EOPNOTSUPP;
+
+ if (edata.data)
+ dev->wanted_features |= mask;
+ else
+ dev->wanted_features &= ~mask;
+
+ __netdev_update_features(dev);
+
+ return 0;
+}
+
+#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
+ ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
+#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
+ NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
+ NETIF_F_RXHASH)
+
+static u32 __ethtool_get_flags(struct net_device *dev)
+{
+ u32 flags = 0;
+
+ if (dev->features & NETIF_F_LRO)
+ flags |= ETH_FLAG_LRO;
+ if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
+ flags |= ETH_FLAG_RXVLAN;
+ if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
+ flags |= ETH_FLAG_TXVLAN;
+ if (dev->features & NETIF_F_NTUPLE)
+ flags |= ETH_FLAG_NTUPLE;
+ if (dev->features & NETIF_F_RXHASH)
+ flags |= ETH_FLAG_RXHASH;
+
+ return flags;
+}
+
+static int __ethtool_set_flags(struct net_device *dev, u32 data)
+{
+ netdev_features_t features = 0, changed;
+
+ if (data & ~ETH_ALL_FLAGS)
+ return -EINVAL;
+
+ if (data & ETH_FLAG_LRO)
+ features |= NETIF_F_LRO;
+ if (data & ETH_FLAG_RXVLAN)
+ features |= NETIF_F_HW_VLAN_CTAG_RX;
+ if (data & ETH_FLAG_TXVLAN)
+ features |= NETIF_F_HW_VLAN_CTAG_TX;
+ if (data & ETH_FLAG_NTUPLE)
+ features |= NETIF_F_NTUPLE;
+ if (data & ETH_FLAG_RXHASH)
+ features |= NETIF_F_RXHASH;
+
+ /* allow changing only bits set in hw_features */
+ changed = (features ^ dev->features) & ETH_ALL_FEATURES;
+ if (changed & ~dev->hw_features)
+ return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
+
+ dev->wanted_features =
+ (dev->wanted_features & ~changed) | (features & changed);
+
+ __netdev_update_features(dev);
+
+ return 0;
+}
+
+/* Given two link masks, AND them together and save the result in dst. */
+void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
+ struct ethtool_link_ksettings *src)
+{
+ unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
+ unsigned int idx = 0;
+
+ for (; idx < size; idx++) {
+ dst->link_modes.supported[idx] &=
+ src->link_modes.supported[idx];
+ dst->link_modes.advertising[idx] &=
+ src->link_modes.advertising[idx];
+ }
+}
+EXPORT_SYMBOL(ethtool_intersect_link_masks);
+
+void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
+ u32 legacy_u32)
+{
+ bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
+ dst[0] = legacy_u32;
+}
+EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
+
+/* return false if src had higher bits set. lower bits always updated. */
+bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
+ const unsigned long *src)
+{
+ bool retval = true;
+
+ /* TODO: following test will soon always be true */
+ if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
+
+ bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
+ bitmap_fill(ext, 32);
+ bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
+ if (bitmap_intersects(ext, src,
+ __ETHTOOL_LINK_MODE_MASK_NBITS)) {
+ /* src mask goes beyond bit 31 */
+ retval = false;
+ }
+ }
+ *legacy_u32 = src[0];
+ return retval;
+}
+EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
+
+/* return false if legacy contained non-0 deprecated fields
+ * maxtxpkt/maxrxpkt. rest of ksettings always updated
+ */
+static bool
+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->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;
+ legacy_settings->transceiver
+ = link_ksettings->base.transceiver;
+ 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. */
+int __ethtool_get_link_ksettings(struct net_device *dev,
+ struct ethtool_link_ksettings *link_ksettings)
+{
+ ASSERT_RTNL();
+
+ if (!dev->ethtool_ops->get_link_ksettings)
+ return -EOPNOTSUPP;
+
+ memset(link_ksettings, 0, sizeof(*link_ksettings));
+ return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings);
+}
+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_arr32(to->link_modes.supported,
+ link_usettings.link_modes.supported,
+ __ETHTOOL_LINK_MODE_MASK_NBITS);
+ bitmap_from_arr32(to->link_modes.advertising,
+ link_usettings.link_modes.advertising,
+ __ETHTOOL_LINK_MODE_MASK_NBITS);
+ bitmap_from_arr32(to->link_modes.lp_advertising,
+ link_usettings.link_modes.lp_advertising,
+ __ETHTOOL_LINK_MODE_MASK_NBITS);
+
+ 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_arr32(link_usettings.link_modes.supported,
+ from->link_modes.supported,
+ __ETHTOOL_LINK_MODE_MASK_NBITS);
+ bitmap_to_arr32(link_usettings.link_modes.advertising,
+ from->link_modes.advertising,
+ __ETHTOOL_LINK_MODE_MASK_NBITS);
+ bitmap_to_arr32(link_usettings.link_modes.lp_advertising,
+ 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. */
+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. */
+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);
+}
+
+/* Query device for its ethtool_cmd settings.
+ *
+ * Backward compatibility note: for compatibility with legacy ethtool, this is
+ * now implemented via get_link_ksettings. When driver reports 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). Deprecated fields from
+ * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero.
+ */
+static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
+{
+ struct ethtool_link_ksettings link_ksettings;
+ struct ethtool_cmd cmd;
+ int err;
+
+ ASSERT_RTNL();
+ if (!dev->ethtool_ops->get_link_ksettings)
+ return -EOPNOTSUPP;
+
+ memset(&link_ksettings, 0, sizeof(link_ksettings));
+ err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
+ if (err < 0)
+ return err;
+ convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings);
+
+ /* send a sensible cmd tag back to user */
+ cmd.cmd = ETHTOOL_GSET;
+
+ 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 is
+ * now always implemented via set_link_settings. When 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_link_ksettings link_ksettings;
+ struct ethtool_cmd cmd;
+
+ ASSERT_RTNL();
+
+ if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
+ return -EFAULT;
+ if (!dev->ethtool_ops->set_link_ksettings)
+ return -EOPNOTSUPP;
+
+ if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd))
+ return -EINVAL;
+ link_ksettings.base.link_mode_masks_nwords =
+ __ETHTOOL_LINK_MODE_MASK_NU32;
+ return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
+}
+
+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) {
+ int ret = ops->get_regs_len(dev);
+
+ if (ret > 0)
+ info.regdump_len = ret;
+ }
+
+ if (ops->get_eeprom_len)
+ info.eedump_len = ops->get_eeprom_len(dev);
+
+ if (!info.fw_version[0])
+ devlink_compat_running_version(dev, info.fw_version,
+ sizeof(info.fw_version));
+
+ 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 = kcalloc(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 FLOW_RSS was requested then user-space must be using the
+ * new definition, as FLOW_RSS is newer.
+ */
+ if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) {
+ info_size = sizeof(info);
+ if (copy_from_user(&info, useraddr, info_size))
+ return -EFAULT;
+ /* Since malicious users may modify the original data,
+ * we need to check whether FLOW_RSS is still requested.
+ */
+ if (!(info.flow_type & FLOW_RSS))
+ return -EINVAL;
+ }
+
+ if (info.cmd != cmd)
+ return -EINVAL;
+
+ if (info.cmd == ETHTOOL_GRXCLSRLALL) {
+ if (info.rule_cnt > 0) {
+ if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
+ rule_buf = kcalloc(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.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
+ return -EINVAL;
+ /* Most drivers don't handle rss_context, check it's 0 as well */
+ if (rxfh.rss_context && !ops->get_rxfh_context)
+ return -EOPNOTSUPP;
+
+ 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;
+
+ if (rxfh.rss_context)
+ ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey,
+ &dev_hfunc,
+ rxfh.rss_context);
+ else
+ 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]);
+ bool delete = false;
+
+ 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.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
+ return -EINVAL;
+ /* Most drivers don't handle rss_context, check it's 0 as well */
+ if (rxfh.rss_context && !ops->set_rxfh_context)
+ return -EOPNOTSUPP;
+
+ /* 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 (master
+ * context) or delete the context (other RSS contexts).
+ * 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) {
+ if (rxfh.rss_context == 0) {
+ indir = (u32 *)rss_config;
+ for (i = 0; i < dev_indir_size; i++)
+ indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
+ } else {
+ delete = true;
+ }
+ }
+
+ 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;
+ }
+ }
+
+ if (rxfh.rss_context)
+ ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc,
+ &rxfh.rss_context, delete);
+ else
+ ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
+ if (ret)
+ goto out;
+
+ if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context),
+ &rxfh.rss_context, sizeof(rxfh.rss_context)))
+ ret = -EFAULT;
+
+ if (!rxfh.rss_context) {
+ /* 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 (reglen <= 0)
+ return reglen;
+
+ if (regs.len > reglen)
+ regs.len = reglen;
+
+ regbuf = vzalloc(reglen);
+ if (!regbuf)
+ return -ENOMEM;
+
+ if (regs.len < reglen)
+ reglen = regs.len;
+
+ ops->get_regs(dev, ®s, regbuf);
+
+ ret = -EFAULT;
+ if (copy_to_user(useraddr, ®s, sizeof(regs)))
+ goto out;
+ useraddr += offsetof(struct ethtool_regs, data);
+ if (copy_to_user(useraddr, regbuf, reglen))
+ 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;
+
+ if (!dev->ethtool_ops->get_wol)
+ return -EOPNOTSUPP;
+
+ memset(&wol, 0, sizeof(struct ethtool_wolinfo));
+ wol.cmd = ETHTOOL_GWOL;
+ 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;
+ int ret;
+
+ if (!dev->ethtool_ops->set_wol)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&wol, useraddr, sizeof(wol)))
+ return -EFAULT;
+
+ ret = dev->ethtool_ops->set_wol(dev, &wol);
+ if (ret)
+ return ret;
+
+ dev->wol_enabled = !!wol.wolopts;
+
+ return 0;
+}
+
+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, max = { .cmd = ETHTOOL_GRINGPARAM };
+
+ if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
+ return -EFAULT;
+
+ dev->ethtool_ops->get_ringparam(dev, &max);
+
+ /* ensure new ring parameters are within the maximums */
+ if (ringparam.rx_pending > max.rx_max_pending ||
+ ringparam.rx_mini_pending > max.rx_mini_max_pending ||
+ ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending ||
+ ringparam.tx_pending > max.tx_max_pending)
+ return -EINVAL;
+
+ 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, curr = { .cmd = ETHTOOL_GCHANNELS };
+ u16 from_channel, to_channel;
+ u32 max_rx_in_use = 0;
+ unsigned int i;
+
+ 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, &curr);
+
+ /* ensure new counts are within the maximums */
+ if (channels.rx_count > curr.max_rx ||
+ channels.tx_count > curr.max_tx ||
+ channels.combined_count > curr.max_combined ||
+ channels.other_count > curr.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;
+
+ /* Disabling channels, query zero-copy AF_XDP sockets */
+ from_channel = channels.combined_count +
+ min(channels.rx_count, channels.tx_count);
+ to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count);
+ for (i = from_channel; i < to_channel; i++)
+ if (xdp_get_umem_from_qid(dev, i))
+ 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 = { .cmd = 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_array(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;
+
+ if (gstrings.len) {
+ data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN));
+ if (!data)
+ return -ENOMEM;
+
+ __ethtool_get_strings(dev, gstrings.string_set, data);
+ } else {
+ data = NULL;
+ }
+
+ 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;
+
+ if (n_stats) {
+ data = vzalloc(array_size(n_stats, sizeof(u64)));
+ if (!data)
+ return -ENOMEM;
+ ops->get_ethtool_stats(dev, &stats, data);
+ } else {
+ data = NULL;
+ }
+
+ 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)
+{
+ const struct ethtool_ops *ops = dev->ethtool_ops;
+ struct phy_device *phydev = dev->phydev;
+ struct ethtool_stats stats;
+ u64 *data;
+ int ret, n_stats;
+
+ if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count))
+ return -EOPNOTSUPP;
+
+ if (dev->phydev && !ops->get_ethtool_phy_stats)
+ n_stats = phy_ethtool_get_sset_count(dev->phydev);
+ else
+ n_stats = ops->get_sset_count(dev, ETH_SS_PHY_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;
+
+ if (n_stats) {
+ data = vzalloc(array_size(n_stats, sizeof(u64)));
+ if (!data)
+ return -ENOMEM;
+
+ if (dev->phydev && !ops->get_ethtool_phy_stats) {
+ ret = phy_ethtool_get_stats(dev->phydev, &stats, data);
+ if (ret < 0)
+ goto out;
+ } else {
+ ops->get_ethtool_phy_stats(dev, &stats, data);
+ }
+ } else {
+ data = NULL;
+ }
+
+ 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;
+ efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
+
+ if (!dev->ethtool_ops->flash_device)
+ return devlink_compat_flash_update(dev, efl.data);
+
+ 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 (dev->sfp_bus)
+ return sfp_get_module_info(dev->sfp_bus, modinfo);
+
+ 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 (dev->sfp_bus)
+ return sfp_get_module_eeprom(dev->sfp_bus, ee, data);
+
+ 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;
+ case ETHTOOL_PFC_PREVENTION_TOUT:
+ if (tuna->len != sizeof(u16) ||
+ tuna->type_id != ETHTOOL_TUNABLE_U16)
+ 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;
+ useraddr += sizeof(tuna);
+ data = memdup_user(useraddr, tuna.len);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+ ret = ops->set_tunable(dev, &tuna, data);
+
+ kfree(data);
+ return ret;
+}
+
+static noinline_for_stack 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_arr32(queue_mask, per_queue_opt->queue_mask,
+ MAX_NUM_QUEUE);
+
+ 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 noinline_for_stack 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_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE);
+ 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 noinline_for_stack ethtool_set_per_queue(struct net_device *dev,
+ void __user *useraddr, u32 sub_cmd)
+{
+ struct ethtool_per_queue_op per_queue_opt;
+
+ if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
+ return -EFAULT;
+
+ if (per_queue_opt.sub_command != sub_cmd)
+ return -EINVAL;
+
+ 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:
+ case ETHTOOL_PHY_FAST_LINK_DOWN:
+ if (tuna->len != sizeof(u8) ||
+ tuna->type_id != ETHTOOL_TUNABLE_U8)
+ return -EINVAL;
+ break;
+ case ETHTOOL_PHY_EDPD:
+ if (tuna->len != sizeof(u16) ||
+ tuna->type_id != ETHTOOL_TUNABLE_U16)
+ 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;
+ useraddr += sizeof(tuna);
+ data = memdup_user(useraddr, tuna.len);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+ mutex_lock(&phydev->lock);
+ ret = phydev->drv->set_tunable(phydev, &tuna, data);
+ mutex_unlock(&phydev->lock);
+
+ kfree(data);
+ return ret;
+}
+
+static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
+{
+ struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM };
+ int rc;
+
+ if (!dev->ethtool_ops->get_fecparam)
+ return -EOPNOTSUPP;
+
+ rc = dev->ethtool_ops->get_fecparam(dev, &fecparam);
+ if (rc)
+ return rc;
+
+ if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
+{
+ struct ethtool_fecparam fecparam;
+
+ if (!dev->ethtool_ops->set_fecparam)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
+ return -EFAULT;
+
+ return dev->ethtool_ops->set_fecparam(dev, &fecparam);
+}
+
+/* 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:
+ case ETHTOOL_GFECPARAM:
+ 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_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_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, sub_cmd);
+ 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;
+ case ETHTOOL_GFECPARAM:
+ rc = ethtool_get_fecparam(dev, useraddr);
+ break;
+ case ETHTOOL_SFECPARAM:
+ rc = ethtool_set_fecparam(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;
+}
+
+struct ethtool_rx_flow_key {
+ struct flow_dissector_key_basic basic;
+ union {
+ struct flow_dissector_key_ipv4_addrs ipv4;
+ struct flow_dissector_key_ipv6_addrs ipv6;
+ };
+ struct flow_dissector_key_ports tp;
+ struct flow_dissector_key_ip ip;
+ struct flow_dissector_key_vlan vlan;
+ struct flow_dissector_key_eth_addrs eth_addrs;
+} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
+
+struct ethtool_rx_flow_match {
+ struct flow_dissector dissector;
+ struct ethtool_rx_flow_key key;
+ struct ethtool_rx_flow_key mask;
+};
+
+struct ethtool_rx_flow_rule *
+ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input)
+{
+ const struct ethtool_rx_flow_spec *fs = input->fs;
+ static struct in6_addr zero_addr = {};
+ struct ethtool_rx_flow_match *match;
+ struct ethtool_rx_flow_rule *flow;
+ struct flow_action_entry *act;
+
+ flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) +
+ sizeof(struct ethtool_rx_flow_match), GFP_KERNEL);
+ if (!flow)
+ return ERR_PTR(-ENOMEM);
+
+ /* ethtool_rx supports only one single action per rule. */
+ flow->rule = flow_rule_alloc(1);
+ if (!flow->rule) {
+ kfree(flow);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ match = (struct ethtool_rx_flow_match *)flow->priv;
+ flow->rule->match.dissector = &match->dissector;
+ flow->rule->match.mask = &match->mask;
+ flow->rule->match.key = &match->key;
+
+ match->mask.basic.n_proto = htons(0xffff);
+
+ switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
+ case ETHER_FLOW: {
+ const struct ethhdr *ether_spec, *ether_m_spec;
+
+ ether_spec = &fs->h_u.ether_spec;
+ ether_m_spec = &fs->m_u.ether_spec;
+
+ if (!is_zero_ether_addr(ether_m_spec->h_source)) {
+ ether_addr_copy(match->key.eth_addrs.src,
+ ether_spec->h_source);
+ ether_addr_copy(match->mask.eth_addrs.src,
+ ether_m_spec->h_source);
+ }
+ if (!is_zero_ether_addr(ether_m_spec->h_dest)) {
+ ether_addr_copy(match->key.eth_addrs.dst,
+ ether_spec->h_dest);
+ ether_addr_copy(match->mask.eth_addrs.dst,
+ ether_m_spec->h_dest);
+ }
+ if (ether_m_spec->h_proto) {
+ match->key.basic.n_proto = ether_spec->h_proto;
+ match->mask.basic.n_proto = ether_m_spec->h_proto;
+ }
+ }
+ break;
+ case TCP_V4_FLOW:
+ case UDP_V4_FLOW: {
+ const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec;
+
+ match->key.basic.n_proto = htons(ETH_P_IP);
+
+ v4_spec = &fs->h_u.tcp_ip4_spec;
+ v4_m_spec = &fs->m_u.tcp_ip4_spec;
+
+ if (v4_m_spec->ip4src) {
+ match->key.ipv4.src = v4_spec->ip4src;
+ match->mask.ipv4.src = v4_m_spec->ip4src;
+ }
+ if (v4_m_spec->ip4dst) {
+ match->key.ipv4.dst = v4_spec->ip4dst;
+ match->mask.ipv4.dst = v4_m_spec->ip4dst;
+ }
+ if (v4_m_spec->ip4src ||
+ v4_m_spec->ip4dst) {
+ match->dissector.used_keys |=
+ BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS);
+ match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] =
+ offsetof(struct ethtool_rx_flow_key, ipv4);
+ }
+ if (v4_m_spec->psrc) {
+ match->key.tp.src = v4_spec->psrc;
+ match->mask.tp.src = v4_m_spec->psrc;
+ }
+ if (v4_m_spec->pdst) {
+ match->key.tp.dst = v4_spec->pdst;
+ match->mask.tp.dst = v4_m_spec->pdst;
+ }
+ if (v4_m_spec->psrc ||
+ v4_m_spec->pdst) {
+ match->dissector.used_keys |=
+ BIT(FLOW_DISSECTOR_KEY_PORTS);
+ match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
+ offsetof(struct ethtool_rx_flow_key, tp);
+ }
+ if (v4_m_spec->tos) {
+ match->key.ip.tos = v4_spec->tos;
+ match->mask.ip.tos = v4_m_spec->tos;
+ match->dissector.used_keys |=
+ BIT(FLOW_DISSECTOR_KEY_IP);
+ match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
+ offsetof(struct ethtool_rx_flow_key, ip);
+ }
+ }
+ break;
+ case TCP_V6_FLOW:
+ case UDP_V6_FLOW: {
+ const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec;
+
+ match->key.basic.n_proto = htons(ETH_P_IPV6);
+
+ v6_spec = &fs->h_u.tcp_ip6_spec;
+ v6_m_spec = &fs->m_u.tcp_ip6_spec;
+ if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) {
+ memcpy(&match->key.ipv6.src, v6_spec->ip6src,
+ sizeof(match->key.ipv6.src));
+ memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src,
+ sizeof(match->mask.ipv6.src));
+ }
+ if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) {
+ memcpy(&match->key.ipv6.dst, v6_spec->ip6dst,
+ sizeof(match->key.ipv6.dst));
+ memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst,
+ sizeof(match->mask.ipv6.dst));
+ }
+ if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) ||
+ memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) {
+ match->dissector.used_keys |=
+ BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS);
+ match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] =
+ offsetof(struct ethtool_rx_flow_key, ipv6);
+ }
+ if (v6_m_spec->psrc) {
+ match->key.tp.src = v6_spec->psrc;
+ match->mask.tp.src = v6_m_spec->psrc;
+ }
+ if (v6_m_spec->pdst) {
+ match->key.tp.dst = v6_spec->pdst;
+ match->mask.tp.dst = v6_m_spec->pdst;
+ }
+ if (v6_m_spec->psrc ||
+ v6_m_spec->pdst) {
+ match->dissector.used_keys |=
+ BIT(FLOW_DISSECTOR_KEY_PORTS);
+ match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
+ offsetof(struct ethtool_rx_flow_key, tp);
+ }
+ if (v6_m_spec->tclass) {
+ match->key.ip.tos = v6_spec->tclass;
+ match->mask.ip.tos = v6_m_spec->tclass;
+ match->dissector.used_keys |=
+ BIT(FLOW_DISSECTOR_KEY_IP);
+ match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
+ offsetof(struct ethtool_rx_flow_key, ip);
+ }
+ }
+ break;
+ default:
+ ethtool_rx_flow_rule_destroy(flow);
+ return ERR_PTR(-EINVAL);
+ }
+
+ switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
+ case TCP_V4_FLOW:
+ case TCP_V6_FLOW:
+ match->key.basic.ip_proto = IPPROTO_TCP;
+ break;
+ case UDP_V4_FLOW:
+ case UDP_V6_FLOW:
+ match->key.basic.ip_proto = IPPROTO_UDP;
+ break;
+ }
+ match->mask.basic.ip_proto = 0xff;
+
+ match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC);
+ match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] =
+ offsetof(struct ethtool_rx_flow_key, basic);
+
+ if (fs->flow_type & FLOW_EXT) {
+ const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
+ const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
+
+ if (ext_m_spec->vlan_etype) {
+ match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype;
+ match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype;
+ }
+
+ if (ext_m_spec->vlan_tci) {
+ match->key.vlan.vlan_id =
+ ntohs(ext_h_spec->vlan_tci) & 0x0fff;
+ match->mask.vlan.vlan_id =
+ ntohs(ext_m_spec->vlan_tci) & 0x0fff;
+
+ match->key.vlan.vlan_dei =
+ !!(ext_h_spec->vlan_tci & htons(0x1000));
+ match->mask.vlan.vlan_dei =
+ !!(ext_m_spec->vlan_tci & htons(0x1000));
+
+ match->key.vlan.vlan_priority =
+ (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13;
+ match->mask.vlan.vlan_priority =
+ (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13;
+ }
+
+ if (ext_m_spec->vlan_etype ||
+ ext_m_spec->vlan_tci) {
+ match->dissector.used_keys |=
+ BIT(FLOW_DISSECTOR_KEY_VLAN);
+ match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] =
+ offsetof(struct ethtool_rx_flow_key, vlan);
+ }
+ }
+ if (fs->flow_type & FLOW_MAC_EXT) {
+ const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
+ const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
+
+ memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest,
+ ETH_ALEN);
+ memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest,
+ ETH_ALEN);
+
+ match->dissector.used_keys |=
+ BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS);
+ match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] =
+ offsetof(struct ethtool_rx_flow_key, eth_addrs);
+ }
+
+ act = &flow->rule->action.entries[0];
+ switch (fs->ring_cookie) {
+ case RX_CLS_FLOW_DISC:
+ act->id = FLOW_ACTION_DROP;
+ break;
+ case RX_CLS_FLOW_WAKE:
+ act->id = FLOW_ACTION_WAKE;
+ break;
+ default:
+ act->id = FLOW_ACTION_QUEUE;
+ if (fs->flow_type & FLOW_RSS)
+ act->queue.ctx = input->rss_ctx;
+
+ act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie);
+ act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie);
+ break;
+ }
+
+ return flow;
+}
+EXPORT_SYMBOL(ethtool_rx_flow_rule_create);
+
+void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow)
+{
+ kfree(flow->rule);
+ kfree(flow);
+}
+EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy);