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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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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 <linux/utsname.h>#include <linux/ethtool_netlink.h>#include <net/devlink.h>#include <net/ipv6.h>#include <net/flow_offload.h>#include <net/netdev_lock.h>#include <net/netdev_queues.h>
#include "common.h"#include "../core/dev.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){ /* Synchronize carrier state with link watch, see also rtnl_getlink() */ __linkwatch_sync_dev(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 kernel_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 boolconvert_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 netif_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *link_ksettings){ netdev_assert_locked_ops_compat(dev);
if (!dev->ethtool_ops->get_link_ksettings) return -EOPNOTSUPP;
if (!netif_device_present(dev)) return -ENODEV;
memset(link_ksettings, 0, sizeof(*link_ksettings)); return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings);}EXPORT_SYMBOL(netif_get_link_ksettings);
/* Convenience helper for callers that hold only rtnl_lock(). */int __ethtool_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *link_ksettings){ int ret;
ASSERT_RTNL();
netdev_lock_ops(dev); ret = netif_get_link_ksettings(dev, link_ksettings); netdev_unlock_ops(dev); return ret;}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 intstore_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;
netdev_assert_locked_ops_compat(dev); 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;
netdev_assert_locked_ops_compat(dev);
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); ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF); } 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;
netdev_assert_locked_ops_compat(dev); if (!dev->ethtool_ops->get_link_ksettings) return -EOPNOTSUPP;
if (dev->ethtool->module_fw_flash_in_progress) return -EBUSY;
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;
netdev_assert_locked_ops_compat(dev);
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); ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF); } return ret;}
static intethtool_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, init_uts_ns.name.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 intethtool_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 bool flow_type_hashable(u32 flow_type){ switch (flow_type) { case ETHER_FLOW: case TCP_V4_FLOW: case UDP_V4_FLOW: case SCTP_V4_FLOW: case AH_ESP_V4_FLOW: case TCP_V6_FLOW: case UDP_V6_FLOW: case SCTP_V6_FLOW: case AH_ESP_V6_FLOW: case AH_V4_FLOW: case ESP_V4_FLOW: case AH_V6_FLOW: case ESP_V6_FLOW: case IPV4_FLOW: case IPV6_FLOW: case GTPU_V4_FLOW: case GTPU_V6_FLOW: case GTPC_V4_FLOW: case GTPC_V6_FLOW: case GTPC_TEID_V4_FLOW: case GTPC_TEID_V6_FLOW: case GTPU_EH_V4_FLOW: case GTPU_EH_V6_FLOW: case GTPU_UL_V4_FLOW: case GTPU_UL_V6_FLOW: case GTPU_DL_V4_FLOW: case GTPU_DL_V6_FLOW: return true; }
return false;}
static bool flow_type_v6(u32 flow_type){ switch (flow_type) { case TCP_V6_FLOW: case UDP_V6_FLOW: case SCTP_V6_FLOW: case AH_ESP_V6_FLOW: case AH_V6_FLOW: case ESP_V6_FLOW: case IPV6_FLOW: case GTPU_V6_FLOW: case GTPC_V6_FLOW: case GTPC_TEID_V6_FLOW: case GTPU_EH_V6_FLOW: case GTPU_UL_V6_FLOW: case GTPU_DL_V6_FLOW: return true; }
return false;}
/* When adding a new type, update the assert and, if it's hashable, add it to * the flow_type_hashable switch case. */static_assert(GTPU_DL_V6_FLOW + 1 == __FLOW_TYPE_COUNT);
static int ethtool_check_xfrm_rxfh(u32 input_xfrm, u64 rxfh){ /* Sanity check: if symmetric-xor/symmetric-or-xor is set, then: * 1 - no other fields besides IP src/dst and/or L4 src/dst are set * 2 - If src is set, dst must also be set */ if ((input_xfrm != RXH_XFRM_NO_CHANGE && input_xfrm & (RXH_XFRM_SYM_XOR | RXH_XFRM_SYM_OR_XOR)) && !ethtool_rxfh_config_is_sym(rxfh)) return -EINVAL;
return 0;}
static int ethtool_check_flow_types(struct net_device *dev, u32 input_xfrm){ const struct ethtool_ops *ops = dev->ethtool_ops; int err; u32 i;
if (!input_xfrm || input_xfrm == RXH_XFRM_NO_CHANGE) return 0;
for (i = 0; i < __FLOW_TYPE_COUNT; i++) { struct ethtool_rxfh_fields fields = { .flow_type = i, };
if (!flow_type_hashable(i)) continue;
if (ops->get_rxfh_fields(dev, &fields)) continue;
err = ethtool_check_xfrm_rxfh(input_xfrm, fields.data); if (err) return err; }
return 0;}
static noinline_for_stack intethtool_set_rxfh_fields(struct net_device *dev, u32 cmd, void __user *useraddr){ const struct ethtool_ops *ops = dev->ethtool_ops; struct ethtool_rxfh_fields fields = {}; struct ethtool_rxnfc info; size_t info_size = sizeof(info); int rc;
if (!ops->set_rxfh_fields) return -EOPNOTSUPP;
rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); if (rc) return rc;
if (info.data & RXH_IP6_FL && !flow_type_v6(info.flow_type)) return -EINVAL;
if (info.flow_type & FLOW_RSS && info.rss_context && !ops->rxfh_per_ctx_fields) return -EINVAL;
mutex_lock(&dev->ethtool->rss_lock); if (ops->get_rxfh) { struct ethtool_rxfh_param rxfh = {};
rc = ops->get_rxfh(dev, &rxfh); if (rc) goto exit_unlock;
rc = ethtool_check_xfrm_rxfh(rxfh.input_xfrm, info.data); if (rc) goto exit_unlock; }
fields.data = info.data; fields.flow_type = info.flow_type & ~FLOW_RSS; if (info.flow_type & FLOW_RSS) fields.rss_context = info.rss_context;
rc = ops->set_rxfh_fields(dev, &fields, NULL);exit_unlock: mutex_unlock(&dev->ethtool->rss_lock); if (rc) return rc;
ethtool_rss_notify(dev, ETHTOOL_MSG_RSS_NTF, fields.rss_context); return 0;}
static noinline_for_stack intethtool_get_rxfh_fields(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; struct ethtool_rxfh_fields fields = {}; int ret;
if (!ops->get_rxfh_fields) return -EOPNOTSUPP;
ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); if (ret) return ret;
if (info.flow_type & FLOW_RSS && info.rss_context && !ops->rxfh_per_ctx_fields) return -EINVAL;
fields.flow_type = info.flow_type & ~FLOW_RSS; if (info.flow_type & FLOW_RSS) fields.rss_context = info.rss_context;
mutex_lock(&dev->ethtool->rss_lock); ret = ops->get_rxfh_fields(dev, &fields); mutex_unlock(&dev->ethtool->rss_lock); if (ret < 0) return ret;
info.data = fields.data;
return ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL);}
static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, u32 cmd, void __user *useraddr){ const struct ethtool_ops *ops = dev->ethtool_ops; struct ethtool_rxnfc info; size_t info_size = sizeof(info); int rc;
if (!ops->set_rxnfc) return -EOPNOTSUPP;
rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); if (rc) return rc;
if (cmd == ETHTOOL_SRXCLSRLINS && info.fs.flow_type & FLOW_RSS) { /* Nonzero ring with RSS only makes sense * if NIC adds them together */ if (!ops->cap_rss_rxnfc_adds && ethtool_get_flow_spec_ring(info.fs.ring_cookie)) return -EINVAL;
if (info.rss_context && !xa_load(&dev->ethtool->rss_ctx, info.rss_context)) return -EINVAL; }
rc = 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_rxrings(struct net_device *dev, u32 cmd, void __user *useraddr){ struct ethtool_rxnfc info; size_t info_size; int ret;
info_size = sizeof(info); ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); if (ret) return ret;
ret = ethtool_get_rx_ring_count(dev); if (ret < 0) return ret;
info.data = ret;
return ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL);}
static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, u32 cmd, void __user *useraddr){ const struct ethtool_ops *ops = dev->ethtool_ops; struct ethtool_rxnfc info; void *rule_buf = NULL; size_t info_size; int ret;
if (!ops->get_rxnfc) return -EOPNOTSUPP;
info_size = sizeof(info); 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, int num_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] >= num_rx_rings) return -EINVAL;
return 0;}
static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, void __user *useraddr){ struct ethtool_rxfh_param rxfh = {}; u32 user_size; int ret;
if (!dev->ethtool_ops->get_rxfh_indir_size || !dev->ethtool_ops->get_rxfh) return -EOPNOTSUPP; rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); if (rxfh.indir_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), &rxfh.indir_size, sizeof(rxfh.indir_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 < rxfh.indir_size) return user_size == 0 ? 0 : -EINVAL;
rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); if (!rxfh.indir) return -ENOMEM;
mutex_lock(&dev->ethtool->rss_lock); ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); mutex_unlock(&dev->ethtool->rss_lock); if (ret) goto out; if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, ring_index[0]), rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) ret = -EFAULT;
out: kfree(rxfh.indir); return ret;}
static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, void __user *useraddr){ const struct ethtool_ops *ops = dev->ethtool_ops; struct ethtool_rxfh_param rxfh_dev = {}; struct netlink_ext_ack *extack = NULL; int num_rx_rings; u32 user_size, i; int ret; u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
if (!ops->get_rxfh_indir_size || !ops->set_rxfh) return -EOPNOTSUPP;
rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); if (rxfh_dev.indir_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 != rxfh_dev.indir_size) return -EINVAL;
rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, sizeof(rxfh_dev.indir[0]), GFP_USER); if (!rxfh_dev.indir) return -ENOMEM;
num_rx_rings = ethtool_get_rx_ring_count(dev); if (num_rx_rings < 0) { ret = num_rx_rings; goto out; }
if (user_size == 0) { u32 *indir = rxfh_dev.indir;
for (i = 0; i < rxfh_dev.indir_size; i++) indir[i] = ethtool_rxfh_indir_default(i, num_rx_rings); } else { ret = ethtool_copy_validate_indir(rxfh_dev.indir, useraddr + ringidx_offset, num_rx_rings, rxfh_dev.indir_size); if (ret) goto out; }
rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE;
mutex_lock(&dev->ethtool->rss_lock); ret = ops->set_rxfh(dev, &rxfh_dev, extack); if (ret) goto out_unlock;
/* indicate whether rxfh was set to default */ if (user_size == 0) dev->ethtool->rss_indir_user_size = 0; else dev->ethtool->rss_indir_user_size = rxfh_dev.indir_size;
out_unlock: mutex_unlock(&dev->ethtool->rss_lock);out: kfree(rxfh_dev.indir); return ret;}
static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, void __user *useraddr){ const struct ethtool_ops *ops = dev->ethtool_ops; struct ethtool_rxfh_param rxfh_dev = {}; u32 user_indir_size, user_key_size; struct ethtool_rxfh_context *ctx; struct ethtool_rxfh rxfh; u32 indir_bytes; u8 *rss_config; u32 total_size; int ret;
if (!ops->get_rxfh) return -EOPNOTSUPP;
if (ops->get_rxfh_indir_size) rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); if (ops->get_rxfh_key_size) rxfh_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.rsvd32) return -EINVAL; /* Most drivers don't handle rss_context, check it's 0 as well */ if (rxfh.rss_context && !ops->create_rxfh_context) return -EOPNOTSUPP;
rxfh.indir_size = rxfh_dev.indir_size; rxfh.key_size = rxfh_dev.key_size; if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) return -EFAULT;
if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || (user_key_size && user_key_size != rxfh_dev.key_size)) return -EINVAL;
indir_bytes = user_indir_size * sizeof(rxfh_dev.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) rxfh_dev.indir = (u32 *)rss_config;
if (user_key_size) rxfh_dev.key = rss_config + indir_bytes;
mutex_lock(&dev->ethtool->rss_lock); if (rxfh.rss_context) { ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); if (!ctx) { ret = -ENOENT; goto out; } if (rxfh_dev.indir) memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), indir_bytes); if (!ops->rxfh_per_ctx_key) { rxfh_dev.key_size = 0; } else { if (rxfh_dev.key) memcpy(rxfh_dev.key, ethtool_rxfh_context_key(ctx), user_key_size); rxfh_dev.hfunc = ctx->hfunc; } rxfh_dev.input_xfrm = ctx->input_xfrm; ret = 0; } else { ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); if (ret) goto out; }
if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { ret = -EFAULT; } else if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, input_xfrm), &rxfh_dev.input_xfrm, sizeof(rxfh.input_xfrm))) { ret = -EFAULT; } else if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, key_size), &rxfh_dev.key_size, sizeof(rxfh.key_size))) { ret = -EFAULT; } else if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_config[0]), rss_config, total_size)) { ret = -EFAULT; }out: mutex_unlock(&dev->ethtool->rss_lock); kfree(rss_config);
return ret;}
static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, void __user *useraddr){ u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); const struct ethtool_ops *ops = dev->ethtool_ops; u32 dev_indir_size = 0, dev_key_size = 0, i; u32 user_indir_len = 0, indir_bytes = 0; struct ethtool_rxfh_param rxfh_dev = {}; struct ethtool_rxfh_context *ctx = NULL; struct netlink_ext_ack *extack = NULL; struct ethtool_rxfh rxfh; bool create = false; int num_rx_rings; u8 *rss_config; int ntf = 0; int ret;
if (!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.rsvd32) return -EINVAL; /* Most drivers don't handle rss_context, check it's 0 as well */ if (rxfh.rss_context && !ops->create_rxfh_context) return -EOPNOTSUPP; /* Check input data transformation capabilities */ if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && rxfh.input_xfrm != RXH_XFRM_SYM_OR_XOR && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) return -EINVAL; if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && rxfh.input_xfrm & ~ops->supported_input_xfrm) return -EOPNOTSUPP; create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC;
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)) return -EINVAL;
/* Must request at least one change: indir size, hash key, function * or input transformation. * There's no need for any of it in case of context creation. */ if (!create && (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) return -EINVAL;
indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]);
/* Check settings which may be global rather than per RSS-context */ if (rxfh.rss_context && !ops->rxfh_per_ctx_key) if (rxfh.key_size || (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) return -EOPNOTSUPP;
rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); if (!rss_config) return -ENOMEM;
num_rx_rings = ethtool_get_rx_ring_count(dev); if (num_rx_rings < 0) { ret = num_rx_rings; goto out_free; }
/* 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) { user_indir_len = indir_bytes; rxfh_dev.indir = (u32 *)rss_config; rxfh_dev.indir_size = dev_indir_size; ret = ethtool_copy_validate_indir(rxfh_dev.indir, useraddr + rss_cfg_offset, num_rx_rings, rxfh.indir_size); if (ret) goto out_free; } else if (rxfh.indir_size == 0) { if (rxfh.rss_context == 0) { u32 *indir;
rxfh_dev.indir = (u32 *)rss_config; rxfh_dev.indir_size = dev_indir_size; indir = rxfh_dev.indir; for (i = 0; i < dev_indir_size; i++) indir[i] = ethtool_rxfh_indir_default(i, num_rx_rings); } else { rxfh_dev.rss_delete = true; } }
if (rxfh.key_size) { rxfh_dev.key_size = dev_key_size; rxfh_dev.key = rss_config + indir_bytes; if (copy_from_user(rxfh_dev.key, useraddr + rss_cfg_offset + user_indir_len, rxfh.key_size)) { ret = -EFAULT; goto out_free; } }
mutex_lock(&dev->ethtool->rss_lock);
ret = ethtool_check_flow_types(dev, rxfh.input_xfrm); if (ret) goto out_unlock;
if (rxfh.rss_context && rxfh_dev.rss_delete) { ret = ethtool_check_rss_ctx_busy(dev, rxfh.rss_context); if (ret) goto out_unlock; }
if (create) { u32 limit, ctx_id;
if (rxfh_dev.rss_delete) { ret = -EINVAL; goto out_unlock; } ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); if (!ctx) { ret = -ENOMEM; goto out_unlock; }
limit = ops->rxfh_max_num_contexts ?: U32_MAX; ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, XA_LIMIT(1, limit - 1), GFP_KERNEL_ACCOUNT); if (ret < 0) { kfree(ctx); goto out_unlock; } WARN_ON(!ctx_id); /* can't happen */ rxfh.rss_context = ctx_id; } else if (rxfh.rss_context) { ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); if (!ctx) { ret = -ENOENT; goto out_unlock; } } rxfh_dev.hfunc = rxfh.hfunc; rxfh_dev.rss_context = rxfh.rss_context; rxfh_dev.input_xfrm = rxfh.input_xfrm;
if (!rxfh.rss_context) { ntf = ETHTOOL_MSG_RSS_NTF; ret = ops->set_rxfh(dev, &rxfh_dev, extack); } else if (create) { ntf = ETHTOOL_MSG_RSS_CREATE_NTF; ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, extack); /* Make sure driver populates defaults */ WARN_ON_ONCE(!ret && !rxfh_dev.key && ops->rxfh_per_ctx_key && !memchr_inv(ethtool_rxfh_context_key(ctx), 0, ctx->key_size)); } else if (rxfh_dev.rss_delete) { ntf = ETHTOOL_MSG_RSS_DELETE_NTF; ret = ops->remove_rxfh_context(dev, ctx, rxfh.rss_context, extack); } else { ntf = ETHTOOL_MSG_RSS_NTF; ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, extack); } if (ret) { ntf = 0; if (create) { /* failed to create, free our new tracking entry */ xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); kfree(ctx); } goto out_unlock; }
if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) ret = -EFAULT;
if (!rxfh_dev.rss_context) { /* indicate whether rxfh was set to default */ if (rxfh.indir_size == 0) dev->ethtool->rss_indir_user_size = 0; else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) dev->ethtool->rss_indir_user_size = dev_indir_size; } /* Update rss_ctx tracking */ if (rxfh_dev.rss_delete) { WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); kfree(ctx); } else if (ctx) { if (rxfh_dev.indir) { for (i = 0; i < dev_indir_size; i++) ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; ctx->indir_configured = rxfh.indir_size && rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; ctx->indir_user_size = dev_indir_size; } if (rxfh_dev.key) { memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, dev_key_size); ctx->key_configured = !!rxfh.key_size; } if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) ctx->hfunc = rxfh_dev.hfunc; if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) ctx->input_xfrm = rxfh_dev.input_xfrm; }
out_unlock: mutex_unlock(&dev->ethtool->rss_lock);out_free: kfree(rss_config); if (ntf) ethtool_rss_notify(dev, ntf, rxfh.rss_context); 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 (dev->ethtool->module_fw_flash_in_progress) return -EBUSY;
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->ethtool->wol_enabled = !!wol.wolopts; ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF);
return 0;}
static void eee_to_keee(struct ethtool_keee *keee, const struct ethtool_eee *eee){ memset(keee, 0, sizeof(*keee));
keee->eee_enabled = eee->eee_enabled; keee->tx_lpi_enabled = eee->tx_lpi_enabled; keee->tx_lpi_timer = eee->tx_lpi_timer;
ethtool_convert_legacy_u32_to_link_mode(keee->advertised, eee->advertised);}
static void keee_to_eee(struct ethtool_eee *eee, const struct ethtool_keee *keee){ bool overflow;
memset(eee, 0, sizeof(*eee));
eee->eee_active = keee->eee_active; eee->eee_enabled = keee->eee_enabled; eee->tx_lpi_enabled = keee->tx_lpi_enabled; eee->tx_lpi_timer = keee->tx_lpi_timer;
overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, keee->supported); ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, keee->advertised); ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, keee->lp_advertised); if (overflow) pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n");}
static int ethtool_get_eee(struct net_device *dev, char __user *useraddr){ struct ethtool_keee keee; struct ethtool_eee eee; int rc;
if (!dev->ethtool_ops->get_eee) return -EOPNOTSUPP;
memset(&keee, 0, sizeof(keee)); rc = dev->ethtool_ops->get_eee(dev, &keee); if (rc) return rc;
keee_to_eee(&eee, &keee); if (copy_to_user(useraddr, &eee, sizeof(eee))) return -EFAULT;
return 0;}
static int ethtool_set_eee(struct net_device *dev, char __user *useraddr){ struct ethtool_keee keee; struct ethtool_eee eee; int ret;
if (!dev->ethtool_ops->set_eee) return -EOPNOTSUPP;
if (copy_from_user(&eee, useraddr, sizeof(eee))) return -EFAULT;
eee_to_keee(&keee, &eee); ret = dev->ethtool_ops->set_eee(dev, &keee); if (!ret) ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF); 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 boolethtool_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); 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 kernel_ethtool_ringparam kernel_ringparam; struct ethtool_ringparam ringparam, max; 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;
ethtool_ringparam_get_cfg(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 = netdev_reconfig_start(dev); if (ret) return ret;
ethtool_ringparam_set_cfg(dev->cfg_pending, &ringparam);
ret = netdev_queue_config_revalidate(dev, NULL); if (ret) goto out_free_cfg;
ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, &kernel_ringparam, NULL); if (ret) goto out_free_cfg;
/* Capture ring depth adjustments reported by the driver. */ ethtool_ringparam_set_cfg(dev->cfg_pending, &ringparam); swap(dev->cfg, dev->cfg_pending); ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF);
out_free_cfg: __netdev_free_config(dev->cfg_pending); dev->cfg_pending = dev->cfg; 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 }; 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;
ret = ethtool_check_max_channel(dev, channels, NULL); if (ret) return ret;
/* Disabling channels, query busy queues (AF_XDP, queue leasing) */ for (i = channels.combined_count + channels.rx_count; i < curr.combined_count + curr.rx_count; i++) { if (netdev_queue_busy(dev, i, NETDEV_QUEUE_TYPE_RX, NULL)) return -EINVAL; } for (i = channels.combined_count + channels.tx_count; i < curr.combined_count + curr.tx_count; i++) { if (netdev_queue_busy(dev, i, NETDEV_QUEUE_TYPE_TX, NULL)) return -EINVAL; }
ret = dev->ethtool_ops->set_channels(dev, &channels); if (!ret) ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF); 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); 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);
if (gstrings.len && gstrings.len != ret) gstrings.len = 0; else 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);
void ethtool_puts(u8 **data, const char *str){ strscpy(*data, str, ETH_GSTRING_LEN); *data += ETH_GSTRING_LEN;}EXPORT_SYMBOL(ethtool_puts);
static int ethtool_phys_id(struct net_device *dev, void __user *useraddr, bool has_rtnl_lock){ struct ethtool_value id; const struct ethtool_ops *ops = dev->ethtool_ops; netdevice_tracker dev_tracker; int rc;
if (!ops->set_phys_id) return -EOPNOTSUPP;
if (dev->ethtool->phys_id_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 locks while waiting, but prevent reentry or * removal of the device. */ dev->ethtool->phys_id_busy = true; netdev_hold(dev, &dev_tracker, GFP_KERNEL); netdev_unlock_ops(dev); if (has_rtnl_lock) 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 { if (has_rtnl_lock) rtnl_lock(); netdev_lock_ops(dev); rc = ops->set_phys_id(dev, (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); netdev_unlock_ops(dev); if (has_rtnl_lock) rtnl_unlock(); if (rc) break; schedule_timeout_interruptible(interval); } while (!signal_pending(current) && (!id.data || i < count)); }
if (has_rtnl_lock) rtnl_lock(); netdev_lock_ops(dev); netdev_put(dev, &dev_tracker); dev->ethtool->phys_id_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;
if (stats.n_stats && stats.n_stats != n_stats) stats.n_stats = 0; else stats.n_stats = n_stats;
if (stats.n_stats) { data = vzalloc(array_size(stats.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 (stats.n_stats && copy_to_user(useraddr, data, array_size(stats.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); if (stats->n_stats && stats->n_stats != n_stats) { stats->n_stats = 0; return 0; }
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); if (stats->n_stats && stats->n_stats != n_stats) { stats->n_stats = 0; return 0; }
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 (stats.n_stats && 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 intethtool_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 kernel_ethtool_ts_info kernel_info; struct ethtool_ts_info info = {}; int err;
err = __ethtool_get_ts_info(dev, &kernel_info); if (err) return err;
info.cmd = kernel_info.cmd; info.so_timestamping = kernel_info.so_timestamping; info.phc_index = kernel_info.phc_index; info.tx_types = kernel_info.tx_types; info.rx_filters = kernel_info.rx_filters;
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->ethtool->module_fw_flash_in_progress) return -EBUSY;
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->ethtool->module_fw_flash_in_progress) return -EBUSY;
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 intethtool_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 intethtool_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_objs(*backup, n_queue); 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: case ETHTOOL_PHY_SHORT_CABLE_PRESET: 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; case ETHTOOL_PHY_LPF_BW: case ETHTOOL_PHY_DSP_EQ_INIT_VALUE: if (tuna->len != sizeof(u32) || tuna->type_id != ETHTOOL_TUNABLE_U32) 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 intdev_ethtool_locked(struct net *net, struct net_device *dev, void __user *useraddr, u32 ethcmd, struct ethtool_devlink_compat *devlink_state, bool has_rtnl_lock){ u32 sub_cmd; int rc; netdev_features_t old_features;
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; }
netdev_assert_locked_ops_compat(dev);
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); 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, has_rtnl_lock); 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); break; case ETHTOOL_SPFLAGS: rc = ethtool_set_value(dev, useraddr, dev->ethtool_ops->set_priv_flags); break; case ETHTOOL_GRXFH: rc = ethtool_get_rxfh_fields(dev, ethcmd, useraddr); break; case ETHTOOL_SRXFH: rc = ethtool_set_rxfh_fields(dev, ethcmd, useraddr); break; case ETHTOOL_GRXRINGS: rc = ethtool_get_rxrings(dev, ethcmd, useraddr); break; case ETHTOOL_GRXCLSRLCNT: case ETHTOOL_GRXCLSRULE: case ETHTOOL_GRXCLSRLALL: rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); break; 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);
switch (ethcmd) { case ETHTOOL_PHYS_ID: /* Don't check features if operation drops the locks. * Someone else may have changed features in parallel. */ break; default: if (old_features != dev->features) { if (has_rtnl_lock) netdev_features_change(dev); else netdev_WARN(dev, "ethtool cmd %u changed features without rtnl_lock", ethcmd); } }out: if (dev->dev.parent) pm_runtime_put(dev->dev.parent);
return rc;}
/* Commands that may toggle dev->features in net/ethtool/ioctl.c and so * call into __netdev_update_features(), which still requires rtnl_lock. * Driver-decided SET commands that may chain into rtnl-only helpers are * covered by ethtool_ioctl_needs_rtnl()/ETHTOOL_OP_NEEDS_RTNL_*. */static bool ethtool_cmd_changes_features(u32 ethcmd){ switch (ethcmd) { case ETHTOOL_SFEATURES: case ETHTOOL_SFLAGS: case ETHTOOL_STXCSUM: case ETHTOOL_SRXCSUM: case ETHTOOL_SSG: case ETHTOOL_STSO: case ETHTOOL_SGSO: case ETHTOOL_SGRO: return true; } return false;}
static int__dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, u32 ethcmd, struct ethtool_devlink_compat *devlink_state){ netdevice_tracker dev_tracker; struct net_device *dev; bool need_rtnl; int rc;
dev = netdev_get_by_name(net, ifr->ifr_name, &dev_tracker, GFP_KERNEL); if (!dev) return -ENODEV;
need_rtnl = !netdev_need_ops_lock(dev) || ethtool_cmd_changes_features(ethcmd) || ethtool_ioctl_needs_rtnl(dev, ethcmd); if (need_rtnl) rtnl_lock(); netdev_lock_ops(dev); if (dev->reg_state > NETREG_REGISTERED || dev->moving_ns || !net_eq(dev_net(dev), net)) { rc = -ENODEV; goto exit_ops_unlock; }
rc = dev_ethtool_locked(net, dev, useraddr, ethcmd, devlink_state, need_rtnl);
exit_ops_unlock: netdev_unlock_ops(dev); if (need_rtnl) rtnl_unlock(); netdev_put(dev, &dev_tracker);
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(ðcmd, useraddr, sizeof(ethcmd))) return -EFAULT;
state = kzalloc_obj(*state); 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; }
rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); 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);