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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /net/ethtool/ioctl.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'net/ethtool/ioctl.c')
-rw-r--r--net/ethtool/ioctl.c3390
1 files changed, 3390 insertions, 0 deletions
diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c
new file mode 100644
index 0000000000..0b0ce4f81c
--- /dev/null
+++ b/net/ethtool/ioctl.c
@@ -0,0 +1,3390 @@
+// 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/compat.h>
+#include <linux/etherdevice.h>
+#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 <linux/pm_runtime.h>
+#include <net/devlink.h>
+#include <net/ipv6.h>
+#include <net/xdp_sock_drv.h>
+#include <net/flow_offload.h>
+#include <linux/ethtool_netlink.h>
+#include <generated/utsrelease.h>
+#include "common.h"
+
+/* State held across locks and calls for commands which have devlink fallback */
+struct ethtool_devlink_compat {
+ struct devlink *devlink;
+ union {
+ struct ethtool_flash efl;
+ struct ethtool_drvinfo info;
+ };
+};
+
+static struct devlink *netdev_to_devlink_get(struct net_device *dev)
+{
+ if (!dev->devlink_port)
+ return NULL;
+ return devlink_try_get(dev->devlink_port->devlink);
+}
+
+/*
+ * 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 */
+
+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,
+ array_size(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_phy_ops *phy_ops = ethtool_phy_ops;
+ 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 &&
+ phy_ops && phy_ops->get_sset_count)
+ return phy_ops->get_sset_count(dev->phydev);
+
+ if (sset == ETH_SS_LINK_MODES)
+ return __ETHTOOL_LINK_MODE_MASK_NBITS;
+
+ 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_phy_ops *phy_ops = ethtool_phy_ops;
+ 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_ops &&
+ phy_ops->get_strings)
+ phy_ops->get_strings(dev->phydev, data);
+ else if (stringset == ETH_SS_LINK_MODES)
+ memcpy(data, link_mode_names,
+ __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN);
+ 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_FCOE_CRC |
+ NETIF_F_SCTP_CRC;
+ case ETHTOOL_GRXCSUM:
+ case ETHTOOL_SRXCSUM:
+ return NETIF_F_RXCSUM;
+ case ETHTOOL_GSG:
+ case ETHTOOL_SSG:
+ return NETIF_F_SG | NETIF_F_FRAGLIST;
+ 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)
+{
+ linkmode_zero(dst);
+ 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)
+{
+ *legacy_u32 = src[0];
+ return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) ==
+ __ETHTOOL_LINK_MODE_MASK_NBITS;
+}
+EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
+
+/* 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;
+}
+
+/* Check if the user is trying to change anything besides speed/duplex */
+bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd)
+{
+ struct ethtool_link_settings base2 = {};
+
+ base2.speed = cmd->base.speed;
+ base2.port = PORT_OTHER;
+ base2.duplex = cmd->base.duplex;
+ base2.cmd = cmd->base.cmd;
+ base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords;
+
+ return !memcmp(&base2, &cmd->base, sizeof(base2)) &&
+ bitmap_empty(cmd->link_modes.supported,
+ __ETHTOOL_LINK_MODE_MASK_NBITS) &&
+ bitmap_empty(cmd->link_modes.lp_advertising,
+ __ETHTOOL_LINK_MODE_MASK_NBITS);
+}
+
+/* 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, from, 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;
+ link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED;
+ link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED;
+ link_ksettings.base.rate_matching = RATE_MATCH_NONE;
+
+ 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)
+{
+ struct ethtool_link_ksettings link_ksettings = {};
+ int err;
+
+ 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;
+
+ if (link_ksettings.base.master_slave_cfg ||
+ link_ksettings.base.master_slave_state)
+ return -EINVAL;
+
+ err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
+ if (err >= 0) {
+ ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL);
+ ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
+ }
+ return err;
+}
+
+int ethtool_virtdev_set_link_ksettings(struct net_device *dev,
+ const struct ethtool_link_ksettings *cmd,
+ u32 *dev_speed, u8 *dev_duplex)
+{
+ u32 speed;
+ u8 duplex;
+
+ speed = cmd->base.speed;
+ duplex = cmd->base.duplex;
+ /* don't allow custom speed and duplex */
+ if (!ethtool_validate_speed(speed) ||
+ !ethtool_validate_duplex(duplex) ||
+ !ethtool_virtdev_validate_cmd(cmd))
+ return -EINVAL;
+ *dev_speed = speed;
+ *dev_duplex = duplex;
+
+ return 0;
+}
+EXPORT_SYMBOL(ethtool_virtdev_set_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;
+ int ret;
+
+ 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;
+ ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
+ if (ret >= 0) {
+ ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL);
+ ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
+ }
+ return ret;
+}
+
+static int
+ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp)
+{
+ const struct ethtool_ops *ops = dev->ethtool_ops;
+ struct device *parent = dev->dev.parent;
+
+ rsp->info.cmd = ETHTOOL_GDRVINFO;
+ strscpy(rsp->info.version, UTS_RELEASE, sizeof(rsp->info.version));
+ if (ops->get_drvinfo) {
+ ops->get_drvinfo(dev, &rsp->info);
+ if (!rsp->info.bus_info[0] && parent)
+ strscpy(rsp->info.bus_info, dev_name(parent),
+ sizeof(rsp->info.bus_info));
+ if (!rsp->info.driver[0] && parent && parent->driver)
+ strscpy(rsp->info.driver, parent->driver->name,
+ sizeof(rsp->info.driver));
+ } else if (parent && parent->driver) {
+ strscpy(rsp->info.bus_info, dev_name(parent),
+ sizeof(rsp->info.bus_info));
+ strscpy(rsp->info.driver, parent->driver->name,
+ sizeof(rsp->info.driver));
+ } else if (dev->rtnl_link_ops) {
+ strscpy(rsp->info.driver, dev->rtnl_link_ops->kind,
+ sizeof(rsp->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)
+ rsp->info.testinfo_len = rc;
+ rc = ops->get_sset_count(dev, ETH_SS_STATS);
+ if (rc >= 0)
+ rsp->info.n_stats = rc;
+ rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
+ if (rc >= 0)
+ rsp->info.n_priv_flags = rc;
+ }
+ if (ops->get_regs_len) {
+ int ret = ops->get_regs_len(dev);
+
+ if (ret > 0)
+ rsp->info.regdump_len = ret;
+ }
+
+ if (ops->get_eeprom_len)
+ rsp->info.eedump_len = ops->get_eeprom_len(dev);
+
+ if (!rsp->info.fw_version[0])
+ rsp->devlink = netdev_to_devlink_get(dev);
+
+ 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, array_size(idx, sizeof(u32))))
+ goto out;
+
+ ret = 0;
+
+out:
+ kfree(info_buf);
+ return ret;
+}
+
+static noinline_for_stack int
+ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc,
+ const struct compat_ethtool_rxnfc __user *useraddr,
+ size_t size)
+{
+ struct compat_ethtool_rxnfc crxnfc = {};
+
+ /* We expect there to be holes between fs.m_ext and
+ * fs.ring_cookie and at the end of fs, but nowhere else.
+ * On non-x86, no conversion should be needed.
+ */
+ BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) &&
+ sizeof(struct compat_ethtool_rxnfc) !=
+ sizeof(struct ethtool_rxnfc));
+ BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) +
+ sizeof(useraddr->fs.m_ext) !=
+ offsetof(struct ethtool_rxnfc, fs.m_ext) +
+ sizeof(rxnfc->fs.m_ext));
+ BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) -
+ offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) !=
+ offsetof(struct ethtool_rxnfc, fs.location) -
+ offsetof(struct ethtool_rxnfc, fs.ring_cookie));
+
+ if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc))))
+ return -EFAULT;
+
+ *rxnfc = (struct ethtool_rxnfc) {
+ .cmd = crxnfc.cmd,
+ .flow_type = crxnfc.flow_type,
+ .data = crxnfc.data,
+ .fs = {
+ .flow_type = crxnfc.fs.flow_type,
+ .h_u = crxnfc.fs.h_u,
+ .h_ext = crxnfc.fs.h_ext,
+ .m_u = crxnfc.fs.m_u,
+ .m_ext = crxnfc.fs.m_ext,
+ .ring_cookie = crxnfc.fs.ring_cookie,
+ .location = crxnfc.fs.location,
+ },
+ .rule_cnt = crxnfc.rule_cnt,
+ };
+
+ return 0;
+}
+
+static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc,
+ const void __user *useraddr,
+ size_t size)
+{
+ if (compat_need_64bit_alignment_fixup())
+ return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size);
+
+ if (copy_from_user(rxnfc, useraddr, size))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int ethtool_rxnfc_copy_to_compat(void __user *useraddr,
+ const struct ethtool_rxnfc *rxnfc,
+ size_t size, const u32 *rule_buf)
+{
+ struct compat_ethtool_rxnfc crxnfc;
+
+ memset(&crxnfc, 0, sizeof(crxnfc));
+ crxnfc = (struct compat_ethtool_rxnfc) {
+ .cmd = rxnfc->cmd,
+ .flow_type = rxnfc->flow_type,
+ .data = rxnfc->data,
+ .fs = {
+ .flow_type = rxnfc->fs.flow_type,
+ .h_u = rxnfc->fs.h_u,
+ .h_ext = rxnfc->fs.h_ext,
+ .m_u = rxnfc->fs.m_u,
+ .m_ext = rxnfc->fs.m_ext,
+ .ring_cookie = rxnfc->fs.ring_cookie,
+ .location = rxnfc->fs.location,
+ },
+ .rule_cnt = rxnfc->rule_cnt,
+ };
+
+ if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc))))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info,
+ size_t *info_size, void __user *useraddr)
+{
+ /* 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 || cmd == ETHTOOL_SRXFH)
+ *info_size = (offsetof(struct ethtool_rxnfc, data) +
+ sizeof(info->data));
+
+ if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size))
+ return -EFAULT;
+
+ if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) {
+ *info_size = sizeof(*info);
+ if (ethtool_rxnfc_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;
+
+ return 0;
+}
+
+static int ethtool_rxnfc_copy_to_user(void __user *useraddr,
+ const struct ethtool_rxnfc *rxnfc,
+ size_t size, const u32 *rule_buf)
+{
+ int ret;
+
+ if (compat_need_64bit_alignment_fixup()) {
+ ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size,
+ rule_buf);
+ useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs);
+ } else {
+ ret = copy_to_user(useraddr, rxnfc, size);
+ useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
+ }
+
+ if (ret)
+ return -EFAULT;
+
+ if (rule_buf) {
+ if (copy_to_user(useraddr, rule_buf,
+ rxnfc->rule_cnt * sizeof(u32)))
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+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;
+
+ rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr);
+ if (rc)
+ return rc;
+
+ rc = dev->ethtool_ops->set_rxnfc(dev, &info);
+ if (rc)
+ return rc;
+
+ if (cmd == ETHTOOL_SRXCLSRLINS &&
+ ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL))
+ 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;
+
+ ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr);
+ if (ret)
+ return ret;
+
+ 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 = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf);
+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, array_size(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 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(&regs, 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, &regs, regbuf);
+
+ ret = -EFAULT;
+ if (copy_to_user(useraddr, &regs, sizeof(regs)))
+ goto out;
+ useraddr += offsetof(struct ethtool_regs, data);
+ if (copy_to_user(useraddr, regbuf, 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, cur_wol;
+ int ret;
+
+ if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol)
+ return -EOPNOTSUPP;
+
+ memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo));
+ cur_wol.cmd = ETHTOOL_GWOL;
+ dev->ethtool_ops->get_wol(dev, &cur_wol);
+
+ if (copy_from_user(&wol, useraddr, sizeof(wol)))
+ return -EFAULT;
+
+ if (wol.wolopts & ~cur_wol.supported)
+ return -EINVAL;
+
+ if (wol.wolopts == cur_wol.wolopts &&
+ !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass)))
+ return 0;
+
+ ret = dev->ethtool_ops->set_wol(dev, &wol);
+ if (ret)
+ return ret;
+
+ dev->wol_enabled = !!wol.wolopts;
+ ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL);
+
+ 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;
+ int ret;
+
+ if (!dev->ethtool_ops->set_eee)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&edata, useraddr, sizeof(edata)))
+ return -EFAULT;
+
+ ret = dev->ethtool_ops->set_eee(dev, &edata);
+ if (!ret)
+ ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL);
+ return ret;
+}
+
+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 };
+ int link = __ethtool_get_link(dev);
+
+ if (link < 0)
+ return link;
+
+ edata.data = link;
+ 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 = kzalloc(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 (!eeprom.len) {
+ ret = -EIO;
+ 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 = kzalloc(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 };
+ struct kernel_ethtool_coalesce kernel_coalesce = {};
+ int ret;
+
+ if (!dev->ethtool_ops->get_coalesce)
+ return -EOPNOTSUPP;
+
+ ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce,
+ NULL);
+ if (ret)
+ return ret;
+
+ if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
+ return -EFAULT;
+ return 0;
+}
+
+static bool
+ethtool_set_coalesce_supported(struct net_device *dev,
+ struct ethtool_coalesce *coalesce)
+{
+ u32 supported_params = dev->ethtool_ops->supported_coalesce_params;
+ u32 nonzero_params = 0;
+
+ if (coalesce->rx_coalesce_usecs)
+ nonzero_params |= ETHTOOL_COALESCE_RX_USECS;
+ if (coalesce->rx_max_coalesced_frames)
+ nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES;
+ if (coalesce->rx_coalesce_usecs_irq)
+ nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ;
+ if (coalesce->rx_max_coalesced_frames_irq)
+ nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ;
+ if (coalesce->tx_coalesce_usecs)
+ nonzero_params |= ETHTOOL_COALESCE_TX_USECS;
+ if (coalesce->tx_max_coalesced_frames)
+ nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES;
+ if (coalesce->tx_coalesce_usecs_irq)
+ nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ;
+ if (coalesce->tx_max_coalesced_frames_irq)
+ nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ;
+ if (coalesce->stats_block_coalesce_usecs)
+ nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS;
+ if (coalesce->use_adaptive_rx_coalesce)
+ nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX;
+ if (coalesce->use_adaptive_tx_coalesce)
+ nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX;
+ if (coalesce->pkt_rate_low)
+ nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW;
+ if (coalesce->rx_coalesce_usecs_low)
+ nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW;
+ if (coalesce->rx_max_coalesced_frames_low)
+ nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW;
+ if (coalesce->tx_coalesce_usecs_low)
+ nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW;
+ if (coalesce->tx_max_coalesced_frames_low)
+ nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW;
+ if (coalesce->pkt_rate_high)
+ nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH;
+ if (coalesce->rx_coalesce_usecs_high)
+ nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH;
+ if (coalesce->rx_max_coalesced_frames_high)
+ nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH;
+ if (coalesce->tx_coalesce_usecs_high)
+ nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH;
+ if (coalesce->tx_max_coalesced_frames_high)
+ nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH;
+ if (coalesce->rate_sample_interval)
+ nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL;
+
+ return (supported_params & nonzero_params) == nonzero_params;
+}
+
+static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
+ void __user *useraddr)
+{
+ struct kernel_ethtool_coalesce kernel_coalesce = {};
+ struct ethtool_coalesce coalesce;
+ int ret;
+
+ if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce)
+ return -EOPNOTSUPP;
+
+ ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce,
+ NULL);
+ if (ret)
+ return ret;
+
+ if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
+ return -EFAULT;
+
+ if (!ethtool_set_coalesce_supported(dev, &coalesce))
+ return -EOPNOTSUPP;
+
+ ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce,
+ NULL);
+ if (!ret)
+ ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL);
+ return ret;
+}
+
+static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
+{
+ struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
+ struct kernel_ethtool_ringparam kernel_ringparam = {};
+
+ if (!dev->ethtool_ops->get_ringparam)
+ return -EOPNOTSUPP;
+
+ dev->ethtool_ops->get_ringparam(dev, &ringparam,
+ &kernel_ringparam, NULL);
+
+ 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 };
+ struct kernel_ethtool_ringparam kernel_ringparam;
+ int ret;
+
+ 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, &kernel_ringparam, NULL);
+
+ /* 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;
+
+ ret = dev->ethtool_ops->set_ringparam(dev, &ringparam,
+ &kernel_ringparam, NULL);
+ if (!ret)
+ ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL);
+ return ret;
+}
+
+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;
+ u64 max_rxnfc_in_use;
+ u32 max_rxfh_in_use;
+ unsigned int i;
+ int ret;
+
+ 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);
+
+ if (channels.rx_count == curr.rx_count &&
+ channels.tx_count == curr.tx_count &&
+ channels.combined_count == curr.combined_count &&
+ channels.other_count == curr.other_count)
+ return 0;
+
+ /* 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 there is at least one RX and one TX channel */
+ if (!channels.combined_count &&
+ (!channels.rx_count || !channels.tx_count))
+ return -EINVAL;
+
+ /* ensure the new Rx count fits within the configured Rx flow
+ * indirection table/rxnfc settings */
+ if (ethtool_get_max_rxnfc_channel(dev, &max_rxnfc_in_use))
+ max_rxnfc_in_use = 0;
+ if (!netif_is_rxfh_configured(dev) ||
+ ethtool_get_max_rxfh_channel(dev, &max_rxfh_in_use))
+ max_rxfh_in_use = 0;
+ if (channels.combined_count + channels.rx_count <=
+ max_t(u64, max_rxnfc_in_use, max_rxfh_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 (xsk_get_pool_from_qid(dev, i))
+ return -EINVAL;
+
+ ret = dev->ethtool_ops->set_channels(dev, &channels);
+ if (!ret)
+ ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL);
+ return ret;
+}
+
+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;
+ int ret;
+
+ if (!dev->ethtool_ops->set_pauseparam)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
+ return -EFAULT;
+
+ ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
+ if (!ret)
+ ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL);
+ return ret;
+}
+
+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 = kcalloc(test_len, sizeof(u64), GFP_USER);
+ if (!data)
+ return -ENOMEM;
+
+ netif_testing_on(dev);
+ ops->self_test(dev, &test, data);
+ netif_testing_off(dev);
+
+ ret = -EFAULT;
+ if (copy_to_user(useraddr, &test, sizeof(test)))
+ goto out;
+ useraddr += sizeof(test);
+ if (copy_to_user(useraddr, data, array_size(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,
+ array_size(gstrings.len, ETH_GSTRING_LEN)))
+ goto out;
+ ret = 0;
+
+out:
+ vfree(data);
+ return ret;
+}
+
+__printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+ vsnprintf(*data, ETH_GSTRING_LEN, fmt, args);
+ va_end(args);
+
+ *data += ETH_GSTRING_LEN;
+}
+EXPORT_SYMBOL(ethtool_sprintf);
+
+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;
+ netdevice_tracker dev_tracker;
+ 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;
+ netdev_hold(dev, &dev_tracker, GFP_KERNEL);
+ 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, interval = HZ / n;
+ u64 count = mul_u32_u32(n, id.data);
+ u64 i = 0;
+
+ 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) && (!id.data || i < count));
+ }
+
+ rtnl_lock();
+ netdev_put(dev, &dev_tracker);
+ 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, array_size(n_stats, sizeof(u64))))
+ goto out;
+ ret = 0;
+
+ out:
+ vfree(data);
+ return ret;
+}
+
+static int ethtool_vzalloc_stats_array(int n_stats, u64 **data)
+{
+ if (n_stats < 0)
+ return n_stats;
+ if (n_stats > S32_MAX / sizeof(u64))
+ return -ENOMEM;
+ if (WARN_ON_ONCE(!n_stats))
+ return -EOPNOTSUPP;
+
+ *data = vzalloc(array_size(n_stats, sizeof(u64)));
+ if (!*data)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int ethtool_get_phy_stats_phydev(struct phy_device *phydev,
+ struct ethtool_stats *stats,
+ u64 **data)
+ {
+ const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
+ int n_stats, ret;
+
+ if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats)
+ return -EOPNOTSUPP;
+
+ n_stats = phy_ops->get_sset_count(phydev);
+
+ ret = ethtool_vzalloc_stats_array(n_stats, data);
+ if (ret)
+ return ret;
+
+ stats->n_stats = n_stats;
+ return phy_ops->get_stats(phydev, stats, *data);
+}
+
+static int ethtool_get_phy_stats_ethtool(struct net_device *dev,
+ struct ethtool_stats *stats,
+ u64 **data)
+{
+ const struct ethtool_ops *ops = dev->ethtool_ops;
+ int n_stats, ret;
+
+ if (!ops || !ops->get_sset_count || ops->get_ethtool_phy_stats)
+ return -EOPNOTSUPP;
+
+ n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS);
+
+ ret = ethtool_vzalloc_stats_array(n_stats, data);
+ if (ret)
+ return ret;
+
+ stats->n_stats = n_stats;
+ ops->get_ethtool_phy_stats(dev, stats, *data);
+
+ return 0;
+}
+
+static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
+{
+ struct phy_device *phydev = dev->phydev;
+ struct ethtool_stats stats;
+ u64 *data = NULL;
+ int ret = -EOPNOTSUPP;
+
+ if (copy_from_user(&stats, useraddr, sizeof(stats)))
+ return -EFAULT;
+
+ if (phydev)
+ ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data);
+
+ if (ret == -EOPNOTSUPP)
+ ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data);
+
+ if (ret)
+ goto out;
+
+ if (copy_to_user(useraddr, &stats, sizeof(stats))) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ useraddr += sizeof(stats);
+ if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64))))
+ ret = -EFAULT;
+
+ 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 int
+ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req)
+{
+ if (!dev->ethtool_ops->flash_device) {
+ req->devlink = netdev_to_devlink_get(dev);
+ return 0;
+ }
+
+ return dev->ethtool_ops->flash_device(dev, &req->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)
+{
+ struct ethtool_ts_info info;
+ int err;
+
+ err = __ethtool_get_ts_info(dev, &info);
+ if (err)
+ return err;
+
+ if (copy_to_user(useraddr, &info, sizeof(info)))
+ return -EFAULT;
+
+ return 0;
+}
+
+int ethtool_get_module_info_call(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_call(dev, &modinfo);
+ if (ret)
+ return ret;
+
+ if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
+ return -EFAULT;
+
+ return 0;
+}
+
+int ethtool_get_module_eeprom_call(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_call(dev, &modinfo);
+ if (ret)
+ return ret;
+
+ return ethtool_get_any_eeprom(dev, useraddr,
+ ethtool_get_module_eeprom_call,
+ modinfo.eeprom_len);
+}
+
+static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
+{
+ switch (tuna->id) {
+ case ETHTOOL_RX_COPYBREAK:
+ case ETHTOOL_TX_COPYBREAK:
+ case ETHTOOL_TX_COPYBREAK_BUF_SIZE:
+ 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 = kzalloc(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;
+ }
+
+ if (!ethtool_set_coalesce_supported(dev, &coalesce)) {
+ ret = -EOPNOTSUPP;
+ 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)
+{
+ struct phy_device *phydev = dev->phydev;
+ struct ethtool_tunable tuna;
+ bool phy_drv_tunable;
+ void *data;
+ int ret;
+
+ phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable;
+ if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable)
+ return -EOPNOTSUPP;
+ if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
+ return -EFAULT;
+ ret = ethtool_phy_tunable_valid(&tuna);
+ if (ret)
+ return ret;
+ data = kzalloc(tuna.len, GFP_USER);
+ if (!data)
+ return -ENOMEM;
+ if (phy_drv_tunable) {
+ mutex_lock(&phydev->lock);
+ ret = phydev->drv->get_tunable(phydev, &tuna, data);
+ mutex_unlock(&phydev->lock);
+ } else {
+ ret = dev->ethtool_ops->get_phy_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 set_phy_tunable(struct net_device *dev, void __user *useraddr)
+{
+ struct phy_device *phydev = dev->phydev;
+ struct ethtool_tunable tuna;
+ bool phy_drv_tunable;
+ void *data;
+ int ret;
+
+ phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable;
+ if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_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);
+ if (phy_drv_tunable) {
+ mutex_lock(&phydev->lock);
+ ret = phydev->drv->set_tunable(phydev, &tuna, data);
+ mutex_unlock(&phydev->lock);
+ } else {
+ ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data);
+ }
+
+ 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 (WARN_ON_ONCE(fecparam.reserved))
+ fecparam.reserved = 0;
+
+ 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;
+
+ if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE)
+ return -EINVAL;
+
+ fecparam.active_fec = 0;
+ fecparam.reserved = 0;
+
+ return dev->ethtool_ops->set_fecparam(dev, &fecparam);
+}
+
+/* The main entry point in this file. Called from net/core/dev_ioctl.c */
+
+static int
+__dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr,
+ u32 ethcmd, struct ethtool_devlink_compat *devlink_state)
+{
+ struct net_device *dev;
+ u32 sub_cmd;
+ int rc;
+ netdev_features_t old_features;
+
+ dev = __dev_get_by_name(net, ifr->ifr_name);
+ if (!dev)
+ return -ENODEV;
+
+ 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->dev.parent)
+ pm_runtime_get_sync(dev->dev.parent);
+
+ if (!netif_device_present(dev)) {
+ rc = -ENODEV;
+ goto out;
+ }
+
+ if (dev->ethtool_ops->begin) {
+ rc = dev->ethtool_ops->begin(dev);
+ if (rc < 0)
+ goto out;
+ }
+ 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, devlink_state);
+ 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);
+ if (!rc)
+ ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL);
+ 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);
+ if (!rc)
+ ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL);
+ 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, devlink_state);
+ 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);
+out:
+ if (dev->dev.parent)
+ pm_runtime_put(dev->dev.parent);
+
+ return rc;
+}
+
+int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr)
+{
+ struct ethtool_devlink_compat *state;
+ u32 ethcmd;
+ int rc;
+
+ if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
+ return -EFAULT;
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return -ENOMEM;
+
+ switch (ethcmd) {
+ case ETHTOOL_FLASHDEV:
+ if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) {
+ rc = -EFAULT;
+ goto exit_free;
+ }
+ state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
+ break;
+ }
+
+ rtnl_lock();
+ rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state);
+ rtnl_unlock();
+ if (rc)
+ goto exit_free;
+
+ switch (ethcmd) {
+ case ETHTOOL_FLASHDEV:
+ if (state->devlink)
+ rc = devlink_compat_flash_update(state->devlink,
+ state->efl.data);
+ break;
+ case ETHTOOL_GDRVINFO:
+ if (state->devlink)
+ devlink_compat_running_version(state->devlink,
+ state->info.fw_version,
+ sizeof(state->info.fw_version));
+ if (copy_to_user(useraddr, &state->info, sizeof(state->info))) {
+ rc = -EFAULT;
+ goto exit_free;
+ }
+ break;
+ }
+
+exit_free:
+ if (state->devlink)
+ devlink_put(state->devlink);
+ kfree(state);
+ 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;
+ 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_ULL(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_ULL(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 (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) {
+ 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 (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) {
+ 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 (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) ||
+ !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) {
+ match->dissector.used_keys |=
+ BIT_ULL(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_ULL(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_ULL(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;
+ match->mask.basic.ip_proto = 0xff;
+ break;
+ case UDP_V4_FLOW:
+ case UDP_V6_FLOW:
+ match->key.basic.ip_proto = IPPROTO_UDP;
+ match->mask.basic.ip_proto = 0xff;
+ break;
+ }
+
+ match->dissector.used_keys |= BIT_ULL(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_ULL(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_ULL(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);