root/net/ethtool/common.c
// SPDX-License-Identifier: GPL-2.0-only

#include <linux/ethtool_netlink.h>
#include <linux/net_tstamp.h>
#include <linux/phy.h>
#include <linux/rtnetlink.h>
#include <linux/ptp_clock_kernel.h>
#include <linux/phy_link_topology.h>
#include <net/netdev_queues.h>

#include "netlink.h"
#include "common.h"
#include "../core/dev.h"


const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
        [NETIF_F_SG_BIT] =               "tx-scatter-gather",
        [NETIF_F_IP_CSUM_BIT] =          "tx-checksum-ipv4",
        [NETIF_F_HW_CSUM_BIT] =          "tx-checksum-ip-generic",
        [NETIF_F_IPV6_CSUM_BIT] =        "tx-checksum-ipv6",
        [NETIF_F_HIGHDMA_BIT] =          "highdma",
        [NETIF_F_FRAGLIST_BIT] =         "tx-scatter-gather-fraglist",
        [NETIF_F_HW_VLAN_CTAG_TX_BIT] =  "tx-vlan-hw-insert",

        [NETIF_F_HW_VLAN_CTAG_RX_BIT] =  "rx-vlan-hw-parse",
        [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
        [NETIF_F_HW_VLAN_STAG_TX_BIT] =  "tx-vlan-stag-hw-insert",
        [NETIF_F_HW_VLAN_STAG_RX_BIT] =  "rx-vlan-stag-hw-parse",
        [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter",
        [NETIF_F_VLAN_CHALLENGED_BIT] =  "vlan-challenged",
        [NETIF_F_GSO_BIT] =              "tx-generic-segmentation",
        [NETIF_F_GRO_BIT] =              "rx-gro",
        [NETIF_F_GRO_HW_BIT] =           "rx-gro-hw",
        [NETIF_F_LRO_BIT] =              "rx-lro",

        [NETIF_F_TSO_BIT] =              "tx-tcp-segmentation",
        [NETIF_F_GSO_ROBUST_BIT] =       "tx-gso-robust",
        [NETIF_F_TSO_ECN_BIT] =          "tx-tcp-ecn-segmentation",
        [NETIF_F_GSO_ACCECN_BIT] =       "tx-tcp-accecn-segmentation",
        [NETIF_F_TSO_MANGLEID_BIT] =     "tx-tcp-mangleid-segmentation",
        [NETIF_F_TSO6_BIT] =             "tx-tcp6-segmentation",
        [NETIF_F_FSO_BIT] =              "tx-fcoe-segmentation",
        [NETIF_F_GSO_GRE_BIT] =          "tx-gre-segmentation",
        [NETIF_F_GSO_GRE_CSUM_BIT] =     "tx-gre-csum-segmentation",
        [NETIF_F_GSO_IPXIP4_BIT] =       "tx-ipxip4-segmentation",
        [NETIF_F_GSO_IPXIP6_BIT] =       "tx-ipxip6-segmentation",
        [NETIF_F_GSO_UDP_TUNNEL_BIT] =   "tx-udp_tnl-segmentation",
        [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
        [NETIF_F_GSO_PARTIAL_BIT] =      "tx-gso-partial",
        [NETIF_F_GSO_TUNNEL_REMCSUM_BIT] = "tx-tunnel-remcsum-segmentation",
        [NETIF_F_GSO_SCTP_BIT] =         "tx-sctp-segmentation",
        [NETIF_F_GSO_ESP_BIT] =          "tx-esp-segmentation",
        [NETIF_F_GSO_UDP_L4_BIT] =       "tx-udp-segmentation",
        [NETIF_F_GSO_FRAGLIST_BIT] =     "tx-gso-list",

        [NETIF_F_FCOE_CRC_BIT] =         "tx-checksum-fcoe-crc",
        [NETIF_F_SCTP_CRC_BIT] =        "tx-checksum-sctp",
        [NETIF_F_NTUPLE_BIT] =           "rx-ntuple-filter",
        [NETIF_F_RXHASH_BIT] =           "rx-hashing",
        [NETIF_F_RXCSUM_BIT] =           "rx-checksum",
        [NETIF_F_NOCACHE_COPY_BIT] =     "tx-nocache-copy",
        [NETIF_F_LOOPBACK_BIT] =         "loopback",
        [NETIF_F_RXFCS_BIT] =            "rx-fcs",
        [NETIF_F_RXALL_BIT] =            "rx-all",
        [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
        [NETIF_F_HW_TC_BIT] =            "hw-tc-offload",
        [NETIF_F_HW_ESP_BIT] =           "esp-hw-offload",
        [NETIF_F_HW_ESP_TX_CSUM_BIT] =   "esp-tx-csum-hw-offload",
        [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] =       "rx-udp_tunnel-port-offload",
        [NETIF_F_HW_TLS_RECORD_BIT] =   "tls-hw-record",
        [NETIF_F_HW_TLS_TX_BIT] =        "tls-hw-tx-offload",
        [NETIF_F_HW_TLS_RX_BIT] =        "tls-hw-rx-offload",
        [NETIF_F_GRO_FRAGLIST_BIT] =     "rx-gro-list",
        [NETIF_F_HW_MACSEC_BIT] =        "macsec-hw-offload",
        [NETIF_F_GRO_UDP_FWD_BIT] =      "rx-udp-gro-forwarding",
        [NETIF_F_HW_HSR_TAG_INS_BIT] =   "hsr-tag-ins-offload",
        [NETIF_F_HW_HSR_TAG_RM_BIT] =    "hsr-tag-rm-offload",
        [NETIF_F_HW_HSR_FWD_BIT] =       "hsr-fwd-offload",
        [NETIF_F_HW_HSR_DUP_BIT] =       "hsr-dup-offload",
};

const char
rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
        [ETH_RSS_HASH_TOP_BIT] =        "toeplitz",
        [ETH_RSS_HASH_XOR_BIT] =        "xor",
        [ETH_RSS_HASH_CRC32_BIT] =      "crc32",
};

const char
tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
        [ETHTOOL_ID_UNSPEC]     = "Unspec",
        [ETHTOOL_RX_COPYBREAK]  = "rx-copybreak",
        [ETHTOOL_TX_COPYBREAK]  = "tx-copybreak",
        [ETHTOOL_PFC_PREVENTION_TOUT] = "pfc-prevention-tout",
        [ETHTOOL_TX_COPYBREAK_BUF_SIZE] = "tx-copybreak-buf-size",
};

const char
phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
        [ETHTOOL_ID_UNSPEC]     = "Unspec",
        [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
        [ETHTOOL_PHY_FAST_LINK_DOWN] = "phy-fast-link-down",
        [ETHTOOL_PHY_EDPD]      = "phy-energy-detect-power-down",
};

#define __LINK_MODE_NAME(speed, type, duplex) \
        #speed "base" #type "/" #duplex
#define __DEFINE_LINK_MODE_NAME(speed, type, duplex) \
        [ETHTOOL_LINK_MODE(speed, type, duplex)] = \
        __LINK_MODE_NAME(speed, type, duplex)
#define __DEFINE_SPECIAL_MODE_NAME(_mode, _name) \
        [ETHTOOL_LINK_MODE_ ## _mode ## _BIT] = _name

const char link_mode_names[][ETH_GSTRING_LEN] = {
        __DEFINE_LINK_MODE_NAME(10, T, Half),
        __DEFINE_LINK_MODE_NAME(10, T, Full),
        __DEFINE_LINK_MODE_NAME(100, T, Half),
        __DEFINE_LINK_MODE_NAME(100, T, Full),
        __DEFINE_LINK_MODE_NAME(1000, T, Half),
        __DEFINE_LINK_MODE_NAME(1000, T, Full),
        __DEFINE_SPECIAL_MODE_NAME(Autoneg, "Autoneg"),
        __DEFINE_SPECIAL_MODE_NAME(TP, "TP"),
        __DEFINE_SPECIAL_MODE_NAME(AUI, "AUI"),
        __DEFINE_SPECIAL_MODE_NAME(MII, "MII"),
        __DEFINE_SPECIAL_MODE_NAME(FIBRE, "FIBRE"),
        __DEFINE_SPECIAL_MODE_NAME(BNC, "BNC"),
        __DEFINE_LINK_MODE_NAME(10000, T, Full),
        __DEFINE_SPECIAL_MODE_NAME(Pause, "Pause"),
        __DEFINE_SPECIAL_MODE_NAME(Asym_Pause, "Asym_Pause"),
        __DEFINE_LINK_MODE_NAME(2500, X, Full),
        __DEFINE_SPECIAL_MODE_NAME(Backplane, "Backplane"),
        __DEFINE_LINK_MODE_NAME(1000, KX, Full),
        __DEFINE_LINK_MODE_NAME(10000, KX4, Full),
        __DEFINE_LINK_MODE_NAME(10000, KR, Full),
        __DEFINE_SPECIAL_MODE_NAME(10000baseR_FEC, "10000baseR_FEC"),
        __DEFINE_LINK_MODE_NAME(20000, MLD2, Full),
        __DEFINE_LINK_MODE_NAME(20000, KR2, Full),
        __DEFINE_LINK_MODE_NAME(40000, KR4, Full),
        __DEFINE_LINK_MODE_NAME(40000, CR4, Full),
        __DEFINE_LINK_MODE_NAME(40000, SR4, Full),
        __DEFINE_LINK_MODE_NAME(40000, LR4, Full),
        __DEFINE_LINK_MODE_NAME(56000, KR4, Full),
        __DEFINE_LINK_MODE_NAME(56000, CR4, Full),
        __DEFINE_LINK_MODE_NAME(56000, SR4, Full),
        __DEFINE_LINK_MODE_NAME(56000, LR4, Full),
        __DEFINE_LINK_MODE_NAME(25000, CR, Full),
        __DEFINE_LINK_MODE_NAME(25000, KR, Full),
        __DEFINE_LINK_MODE_NAME(25000, SR, Full),
        __DEFINE_LINK_MODE_NAME(50000, CR2, Full),
        __DEFINE_LINK_MODE_NAME(50000, KR2, Full),
        __DEFINE_LINK_MODE_NAME(100000, KR4, Full),
        __DEFINE_LINK_MODE_NAME(100000, SR4, Full),
        __DEFINE_LINK_MODE_NAME(100000, CR4, Full),
        __DEFINE_LINK_MODE_NAME(100000, LR4_ER4, Full),
        __DEFINE_LINK_MODE_NAME(50000, SR2, Full),
        __DEFINE_LINK_MODE_NAME(1000, X, Full),
        __DEFINE_LINK_MODE_NAME(10000, CR, Full),
        __DEFINE_LINK_MODE_NAME(10000, SR, Full),
        __DEFINE_LINK_MODE_NAME(10000, LR, Full),
        __DEFINE_LINK_MODE_NAME(10000, LRM, Full),
        __DEFINE_LINK_MODE_NAME(10000, ER, Full),
        __DEFINE_LINK_MODE_NAME(2500, T, Full),
        __DEFINE_LINK_MODE_NAME(5000, T, Full),
        __DEFINE_SPECIAL_MODE_NAME(FEC_NONE, "None"),
        __DEFINE_SPECIAL_MODE_NAME(FEC_RS, "RS"),
        __DEFINE_SPECIAL_MODE_NAME(FEC_BASER, "BASER"),
        __DEFINE_LINK_MODE_NAME(50000, KR, Full),
        __DEFINE_LINK_MODE_NAME(50000, SR, Full),
        __DEFINE_LINK_MODE_NAME(50000, CR, Full),
        __DEFINE_LINK_MODE_NAME(50000, LR_ER_FR, Full),
        __DEFINE_LINK_MODE_NAME(50000, DR, Full),
        __DEFINE_LINK_MODE_NAME(100000, KR2, Full),
        __DEFINE_LINK_MODE_NAME(100000, SR2, Full),
        __DEFINE_LINK_MODE_NAME(100000, CR2, Full),
        __DEFINE_LINK_MODE_NAME(100000, LR2_ER2_FR2, Full),
        __DEFINE_LINK_MODE_NAME(100000, DR2, Full),
        __DEFINE_LINK_MODE_NAME(200000, KR4, Full),
        __DEFINE_LINK_MODE_NAME(200000, SR4, Full),
        __DEFINE_LINK_MODE_NAME(200000, LR4_ER4_FR4, Full),
        __DEFINE_LINK_MODE_NAME(200000, DR4, Full),
        __DEFINE_LINK_MODE_NAME(200000, CR4, Full),
        __DEFINE_LINK_MODE_NAME(100, T1, Full),
        __DEFINE_LINK_MODE_NAME(1000, T1, Full),
        __DEFINE_LINK_MODE_NAME(400000, KR8, Full),
        __DEFINE_LINK_MODE_NAME(400000, SR8, Full),
        __DEFINE_LINK_MODE_NAME(400000, LR8_ER8_FR8, Full),
        __DEFINE_LINK_MODE_NAME(400000, DR8, Full),
        __DEFINE_LINK_MODE_NAME(400000, CR8, Full),
        __DEFINE_SPECIAL_MODE_NAME(FEC_LLRS, "LLRS"),
        __DEFINE_LINK_MODE_NAME(100000, KR, Full),
        __DEFINE_LINK_MODE_NAME(100000, SR, Full),
        __DEFINE_LINK_MODE_NAME(100000, LR_ER_FR, Full),
        __DEFINE_LINK_MODE_NAME(100000, DR, Full),
        __DEFINE_LINK_MODE_NAME(100000, CR, Full),
        __DEFINE_LINK_MODE_NAME(200000, KR2, Full),
        __DEFINE_LINK_MODE_NAME(200000, SR2, Full),
        __DEFINE_LINK_MODE_NAME(200000, LR2_ER2_FR2, Full),
        __DEFINE_LINK_MODE_NAME(200000, DR2, Full),
        __DEFINE_LINK_MODE_NAME(200000, CR2, Full),
        __DEFINE_LINK_MODE_NAME(400000, KR4, Full),
        __DEFINE_LINK_MODE_NAME(400000, SR4, Full),
        __DEFINE_LINK_MODE_NAME(400000, LR4_ER4_FR4, Full),
        __DEFINE_LINK_MODE_NAME(400000, DR4, Full),
        __DEFINE_LINK_MODE_NAME(400000, CR4, Full),
        __DEFINE_LINK_MODE_NAME(100, FX, Half),
        __DEFINE_LINK_MODE_NAME(100, FX, Full),
        __DEFINE_LINK_MODE_NAME(10, T1L, Full),
        __DEFINE_LINK_MODE_NAME(800000, CR8, Full),
        __DEFINE_LINK_MODE_NAME(800000, KR8, Full),
        __DEFINE_LINK_MODE_NAME(800000, DR8, Full),
        __DEFINE_LINK_MODE_NAME(800000, DR8_2, Full),
        __DEFINE_LINK_MODE_NAME(800000, SR8, Full),
        __DEFINE_LINK_MODE_NAME(800000, VR8, Full),
        __DEFINE_LINK_MODE_NAME(10, T1S, Full),
        __DEFINE_LINK_MODE_NAME(10, T1S, Half),
        __DEFINE_LINK_MODE_NAME(10, T1S_P2MP, Half),
        __DEFINE_LINK_MODE_NAME(10, T1BRR, Full),
        __DEFINE_LINK_MODE_NAME(200000, CR, Full),
        __DEFINE_LINK_MODE_NAME(200000, KR, Full),
        __DEFINE_LINK_MODE_NAME(200000, DR, Full),
        __DEFINE_LINK_MODE_NAME(200000, DR_2, Full),
        __DEFINE_LINK_MODE_NAME(200000, SR, Full),
        __DEFINE_LINK_MODE_NAME(200000, VR, Full),
        __DEFINE_LINK_MODE_NAME(400000, CR2, Full),
        __DEFINE_LINK_MODE_NAME(400000, KR2, Full),
        __DEFINE_LINK_MODE_NAME(400000, DR2, Full),
        __DEFINE_LINK_MODE_NAME(400000, DR2_2, Full),
        __DEFINE_LINK_MODE_NAME(400000, SR2, Full),
        __DEFINE_LINK_MODE_NAME(400000, VR2, Full),
        __DEFINE_LINK_MODE_NAME(800000, CR4, Full),
        __DEFINE_LINK_MODE_NAME(800000, KR4, Full),
        __DEFINE_LINK_MODE_NAME(800000, DR4, Full),
        __DEFINE_LINK_MODE_NAME(800000, DR4_2, Full),
        __DEFINE_LINK_MODE_NAME(800000, SR4, Full),
        __DEFINE_LINK_MODE_NAME(800000, VR4, Full),
        __DEFINE_LINK_MODE_NAME(1600000, CR8, Full),
        __DEFINE_LINK_MODE_NAME(1600000, KR8, Full),
        __DEFINE_LINK_MODE_NAME(1600000, DR8, Full),
        __DEFINE_LINK_MODE_NAME(1600000, DR8_2, Full),
};
static_assert(ARRAY_SIZE(link_mode_names) == __ETHTOOL_LINK_MODE_MASK_NBITS);

#define __LINK_MODE_LANES_CR            1
#define __LINK_MODE_LANES_CR2           2
#define __LINK_MODE_LANES_CR4           4
#define __LINK_MODE_LANES_CR8           8
#define __LINK_MODE_LANES_DR            1
#define __LINK_MODE_LANES_DR_2          1
#define __LINK_MODE_LANES_DR2           2
#define __LINK_MODE_LANES_DR2_2         2
#define __LINK_MODE_LANES_DR4           4
#define __LINK_MODE_LANES_DR4_2         4
#define __LINK_MODE_LANES_DR8           8
#define __LINK_MODE_LANES_KR            1
#define __LINK_MODE_LANES_KR2           2
#define __LINK_MODE_LANES_KR4           4
#define __LINK_MODE_LANES_KR8           8
#define __LINK_MODE_LANES_SR            1
#define __LINK_MODE_LANES_SR2           2
#define __LINK_MODE_LANES_SR4           4
#define __LINK_MODE_LANES_SR8           8
#define __LINK_MODE_LANES_ER            1
#define __LINK_MODE_LANES_KX            1
#define __LINK_MODE_LANES_KX4           4
#define __LINK_MODE_LANES_LR            1
#define __LINK_MODE_LANES_LR4           4
#define __LINK_MODE_LANES_LR4_ER4       4
#define __LINK_MODE_LANES_LR_ER_FR      1
#define __LINK_MODE_LANES_LR2_ER2_FR2   2
#define __LINK_MODE_LANES_LR4_ER4_FR4   4
#define __LINK_MODE_LANES_LR8_ER8_FR8   8
#define __LINK_MODE_LANES_LRM           1
#define __LINK_MODE_LANES_MLD2          2
#define __LINK_MODE_LANES_T             1
#define __LINK_MODE_LANES_T1            1
#define __LINK_MODE_LANES_X             1
#define __LINK_MODE_LANES_FX            1
#define __LINK_MODE_LANES_T1L           1
#define __LINK_MODE_LANES_T1S           1
#define __LINK_MODE_LANES_T1S_P2MP      1
#define __LINK_MODE_LANES_VR            1
#define __LINK_MODE_LANES_VR2           2
#define __LINK_MODE_LANES_VR4           4
#define __LINK_MODE_LANES_VR8           8
#define __LINK_MODE_LANES_DR8_2         8
#define __LINK_MODE_LANES_T1BRR         1

#define __DEFINE_LINK_MODE_PARAMS_PAIRS(_speed, _type, _min_pairs, _pairs, _duplex, _medium) \
        [ETHTOOL_LINK_MODE(_speed, _type, _duplex)] = {         \
                .speed  = SPEED_ ## _speed, \
                .lanes  = __LINK_MODE_LANES_ ## _type, \
                .min_pairs = _min_pairs, \
                .pairs = _pairs, \
                .duplex = __DUPLEX_ ## _duplex, \
                .mediums = BIT(ETHTOOL_LINK_MEDIUM_BASE ## _medium) \
        }

#define __DEFINE_LINK_MODE_PARAMS(_speed, _type, _duplex, _medium)      \
        [ETHTOOL_LINK_MODE(_speed, _type, _duplex)] = {         \
                .speed  = SPEED_ ## _speed, \
                .lanes  = __LINK_MODE_LANES_ ## _type, \
                .min_pairs = 0, \
                .pairs = 0, \
                .duplex = __DUPLEX_ ## _duplex, \
                .mediums = BIT(ETHTOOL_LINK_MEDIUM_BASE ## _medium) \
        }
#define __DEFINE_LINK_MODE_PARAMS_MEDIUMS(_speed, _type, _duplex, _mediums)     \
        [ETHTOOL_LINK_MODE(_speed, _type, _duplex)] = {         \
                .speed  = SPEED_ ## _speed, \
                .lanes  = __LINK_MODE_LANES_ ## _type, \
                .min_pairs = 0, \
                .pairs = 0, \
                .duplex = __DUPLEX_ ## _duplex, \
                .mediums = (_mediums) \
        }
#define __MED(_medium)  (BIT(ETHTOOL_LINK_MEDIUM_BASE ## _medium))
#define __DUPLEX_Half DUPLEX_HALF
#define __DUPLEX_Full DUPLEX_FULL
#define __DEFINE_SPECIAL_MODE_PARAMS(_mode) \
        [ETHTOOL_LINK_MODE_ ## _mode ## _BIT] = { \
                .speed  = SPEED_UNKNOWN, \
                .lanes  = 0, \
                .duplex = DUPLEX_UNKNOWN, \
                .mediums = BIT(ETHTOOL_LINK_MEDIUM_NONE), \
        }

const struct link_mode_info link_mode_params[] = {
        __DEFINE_LINK_MODE_PARAMS_PAIRS(10, T, 2, 4, Half, T),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(10, T, 2, 4, Full, T),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(100, T, 2, 4, Half, T),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(100, T, 2, 4, Full, T),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(1000, T, 4, 4, Half, T),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(1000, T, 4, 4, Full, T),
        __DEFINE_SPECIAL_MODE_PARAMS(Autoneg),
        __DEFINE_SPECIAL_MODE_PARAMS(TP),
        __DEFINE_SPECIAL_MODE_PARAMS(AUI),
        __DEFINE_SPECIAL_MODE_PARAMS(MII),
        __DEFINE_SPECIAL_MODE_PARAMS(FIBRE),
        __DEFINE_SPECIAL_MODE_PARAMS(BNC),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(10000, T, 4, 4, Full, T),
        __DEFINE_SPECIAL_MODE_PARAMS(Pause),
        __DEFINE_SPECIAL_MODE_PARAMS(Asym_Pause),
        __DEFINE_LINK_MODE_PARAMS_MEDIUMS(2500, X, Full,
                                          __MED(C) | __MED(S) | __MED(L)),
        __DEFINE_SPECIAL_MODE_PARAMS(Backplane),
        __DEFINE_LINK_MODE_PARAMS(1000, KX, Full, K),
        __DEFINE_LINK_MODE_PARAMS(10000, KX4, Full, K),
        __DEFINE_LINK_MODE_PARAMS(10000, KR, Full, K),
        [ETHTOOL_LINK_MODE_10000baseR_FEC_BIT] = {
                .speed  = SPEED_10000,
                .lanes  = 1,
                .duplex = DUPLEX_FULL,
        },
        __DEFINE_LINK_MODE_PARAMS(20000, MLD2, Full, MLD),
        __DEFINE_LINK_MODE_PARAMS(20000, KR2, Full, K),
        __DEFINE_LINK_MODE_PARAMS(40000, KR4, Full, K),
        __DEFINE_LINK_MODE_PARAMS(40000, CR4, Full, C),
        __DEFINE_LINK_MODE_PARAMS(40000, SR4, Full, S),
        __DEFINE_LINK_MODE_PARAMS(40000, LR4, Full, L),
        __DEFINE_LINK_MODE_PARAMS(56000, KR4, Full, K),
        __DEFINE_LINK_MODE_PARAMS(56000, CR4, Full, C),
        __DEFINE_LINK_MODE_PARAMS(56000, SR4, Full, S),
        __DEFINE_LINK_MODE_PARAMS(56000, LR4, Full, L),
        __DEFINE_LINK_MODE_PARAMS(25000, CR, Full, C),
        __DEFINE_LINK_MODE_PARAMS(25000, KR, Full, K),
        __DEFINE_LINK_MODE_PARAMS(25000, SR, Full, S),
        __DEFINE_LINK_MODE_PARAMS(50000, CR2, Full, C),
        __DEFINE_LINK_MODE_PARAMS(50000, KR2, Full, K),
        __DEFINE_LINK_MODE_PARAMS(100000, KR4, Full, K),
        __DEFINE_LINK_MODE_PARAMS(100000, SR4, Full, S),
        __DEFINE_LINK_MODE_PARAMS(100000, CR4, Full, C),
        __DEFINE_LINK_MODE_PARAMS_MEDIUMS(100000, LR4_ER4, Full,
                                          __MED(L) | __MED(E)),
        __DEFINE_LINK_MODE_PARAMS(50000, SR2, Full, S),
        __DEFINE_LINK_MODE_PARAMS_MEDIUMS(1000, X, Full,
                                          __MED(C) | __MED(S) | __MED(L)),
        __DEFINE_LINK_MODE_PARAMS(10000, CR, Full, C),
        __DEFINE_LINK_MODE_PARAMS(10000, SR, Full, S),
        __DEFINE_LINK_MODE_PARAMS(10000, LR, Full, L),
        __DEFINE_LINK_MODE_PARAMS(10000, LRM, Full, L),
        __DEFINE_LINK_MODE_PARAMS(10000, ER, Full, E),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(2500, T, 4, 4, Full, T),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(5000, T, 4, 4, Full, T),
        __DEFINE_SPECIAL_MODE_PARAMS(FEC_NONE),
        __DEFINE_SPECIAL_MODE_PARAMS(FEC_RS),
        __DEFINE_SPECIAL_MODE_PARAMS(FEC_BASER),
        __DEFINE_LINK_MODE_PARAMS(50000, KR, Full, K),
        __DEFINE_LINK_MODE_PARAMS(50000, SR, Full, S),
        __DEFINE_LINK_MODE_PARAMS(50000, CR, Full, C),
        __DEFINE_LINK_MODE_PARAMS_MEDIUMS(50000, LR_ER_FR, Full,
                                          __MED(L) | __MED(E) | __MED(F)),
        __DEFINE_LINK_MODE_PARAMS(50000, DR, Full, D),
        __DEFINE_LINK_MODE_PARAMS(100000, KR2, Full, K),
        __DEFINE_LINK_MODE_PARAMS(100000, SR2, Full, S),
        __DEFINE_LINK_MODE_PARAMS(100000, CR2, Full, C),
        __DEFINE_LINK_MODE_PARAMS_MEDIUMS(100000, LR2_ER2_FR2, Full,
                                          __MED(L) | __MED(E) | __MED(F)),
        __DEFINE_LINK_MODE_PARAMS(100000, DR2, Full, D),
        __DEFINE_LINK_MODE_PARAMS(200000, KR4, Full, K),
        __DEFINE_LINK_MODE_PARAMS(200000, SR4, Full, S),
        __DEFINE_LINK_MODE_PARAMS_MEDIUMS(200000, LR4_ER4_FR4, Full,
                                          __MED(L) | __MED(E) | __MED(F)),
        __DEFINE_LINK_MODE_PARAMS(200000, DR4, Full, D),
        __DEFINE_LINK_MODE_PARAMS(200000, CR4, Full, C),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(100, T1, 1, 1, Full, T),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(1000, T1, 1, 1, Full, T),
        __DEFINE_LINK_MODE_PARAMS(400000, KR8, Full, K),
        __DEFINE_LINK_MODE_PARAMS(400000, SR8, Full, S),
        __DEFINE_LINK_MODE_PARAMS_MEDIUMS(400000, LR8_ER8_FR8, Full,
                                          __MED(L) | __MED(E) | __MED(F)),
        __DEFINE_LINK_MODE_PARAMS(400000, DR8, Full, D),
        __DEFINE_LINK_MODE_PARAMS(400000, CR8, Full, C),
        __DEFINE_SPECIAL_MODE_PARAMS(FEC_LLRS),
        __DEFINE_LINK_MODE_PARAMS(100000, KR, Full, K),
        __DEFINE_LINK_MODE_PARAMS(100000, SR, Full, S),
        __DEFINE_LINK_MODE_PARAMS_MEDIUMS(100000, LR_ER_FR, Full,
                                          __MED(L) | __MED(E) | __MED(F)),
        __DEFINE_LINK_MODE_PARAMS(100000, DR, Full, D),
        __DEFINE_LINK_MODE_PARAMS(100000, CR, Full, C),
        __DEFINE_LINK_MODE_PARAMS(200000, KR2, Full, K),
        __DEFINE_LINK_MODE_PARAMS(200000, SR2, Full, S),
        __DEFINE_LINK_MODE_PARAMS_MEDIUMS(200000, LR2_ER2_FR2, Full,
                                          __MED(L) | __MED(E) | __MED(F)),
        __DEFINE_LINK_MODE_PARAMS(200000, DR2, Full, D),
        __DEFINE_LINK_MODE_PARAMS(200000, CR2, Full, C),
        __DEFINE_LINK_MODE_PARAMS(400000, KR4, Full, K),
        __DEFINE_LINK_MODE_PARAMS(400000, SR4, Full, S),
        __DEFINE_LINK_MODE_PARAMS_MEDIUMS(400000, LR4_ER4_FR4, Full,
                                          __MED(L) | __MED(E) | __MED(F)),
        __DEFINE_LINK_MODE_PARAMS(400000, DR4, Full, D),
        __DEFINE_LINK_MODE_PARAMS(400000, CR4, Full, C),
        __DEFINE_LINK_MODE_PARAMS(100, FX, Half, F),
        __DEFINE_LINK_MODE_PARAMS(100, FX, Full, F),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(10, T1L, 1, 1, Full, T),
        __DEFINE_LINK_MODE_PARAMS(800000, CR8, Full, C),
        __DEFINE_LINK_MODE_PARAMS(800000, KR8, Full, K),
        __DEFINE_LINK_MODE_PARAMS(800000, DR8, Full, D),
        __DEFINE_LINK_MODE_PARAMS(800000, DR8_2, Full, D),
        __DEFINE_LINK_MODE_PARAMS(800000, SR8, Full, S),
        __DEFINE_LINK_MODE_PARAMS(800000, VR8, Full, V),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(10, T1S, 1, 1, Full, T),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(10, T1S, 1, 1, Half, T),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(10, T1S_P2MP, 1, 1, Half, T),
        __DEFINE_LINK_MODE_PARAMS_PAIRS(10, T1BRR, 1, 1, Full, T),
        __DEFINE_LINK_MODE_PARAMS(200000, CR, Full, C),
        __DEFINE_LINK_MODE_PARAMS(200000, KR, Full, K),
        __DEFINE_LINK_MODE_PARAMS(200000, DR, Full, D),
        __DEFINE_LINK_MODE_PARAMS(200000, DR_2, Full, D),
        __DEFINE_LINK_MODE_PARAMS(200000, SR, Full, S),
        __DEFINE_LINK_MODE_PARAMS(200000, VR, Full, V),
        __DEFINE_LINK_MODE_PARAMS(400000, CR2, Full, C),
        __DEFINE_LINK_MODE_PARAMS(400000, KR2, Full, K),
        __DEFINE_LINK_MODE_PARAMS(400000, DR2, Full, D),
        __DEFINE_LINK_MODE_PARAMS(400000, DR2_2, Full, D),
        __DEFINE_LINK_MODE_PARAMS(400000, SR2, Full, S),
        __DEFINE_LINK_MODE_PARAMS(400000, VR2, Full, V),
        __DEFINE_LINK_MODE_PARAMS(800000, CR4, Full, C),
        __DEFINE_LINK_MODE_PARAMS(800000, KR4, Full, K),
        __DEFINE_LINK_MODE_PARAMS(800000, DR4, Full, D),
        __DEFINE_LINK_MODE_PARAMS(800000, DR4_2, Full, D),
        __DEFINE_LINK_MODE_PARAMS(800000, SR4, Full, S),
        __DEFINE_LINK_MODE_PARAMS(800000, VR4, Full, V),
        __DEFINE_LINK_MODE_PARAMS(1600000, CR8, Full, C),
        __DEFINE_LINK_MODE_PARAMS(1600000, KR8, Full, K),
        __DEFINE_LINK_MODE_PARAMS(1600000, DR8, Full, D),
        __DEFINE_LINK_MODE_PARAMS(1600000, DR8_2, Full, D),
};
static_assert(ARRAY_SIZE(link_mode_params) == __ETHTOOL_LINK_MODE_MASK_NBITS);
EXPORT_SYMBOL_GPL(link_mode_params);

static const char ethtool_link_medium_names[][ETH_GSTRING_LEN] = {
        [ETHTOOL_LINK_MEDIUM_BASET] = "BaseT",
        [ETHTOOL_LINK_MEDIUM_BASEK] = "BaseK",
        [ETHTOOL_LINK_MEDIUM_BASES] = "BaseS",
        [ETHTOOL_LINK_MEDIUM_BASEC] = "BaseC",
        [ETHTOOL_LINK_MEDIUM_BASEL] = "BaseL",
        [ETHTOOL_LINK_MEDIUM_BASED] = "BaseD",
        [ETHTOOL_LINK_MEDIUM_BASEE] = "BaseE",
        [ETHTOOL_LINK_MEDIUM_BASEF] = "BaseF",
        [ETHTOOL_LINK_MEDIUM_BASEV] = "BaseV",
        [ETHTOOL_LINK_MEDIUM_BASEMLD] = "BaseMLD",
        [ETHTOOL_LINK_MEDIUM_NONE] = "None",
};
static_assert(ARRAY_SIZE(ethtool_link_medium_names) == __ETHTOOL_LINK_MEDIUM_LAST);

const char netif_msg_class_names[][ETH_GSTRING_LEN] = {
        [NETIF_MSG_DRV_BIT]             = "drv",
        [NETIF_MSG_PROBE_BIT]           = "probe",
        [NETIF_MSG_LINK_BIT]            = "link",
        [NETIF_MSG_TIMER_BIT]           = "timer",
        [NETIF_MSG_IFDOWN_BIT]          = "ifdown",
        [NETIF_MSG_IFUP_BIT]            = "ifup",
        [NETIF_MSG_RX_ERR_BIT]          = "rx_err",
        [NETIF_MSG_TX_ERR_BIT]          = "tx_err",
        [NETIF_MSG_TX_QUEUED_BIT]       = "tx_queued",
        [NETIF_MSG_INTR_BIT]            = "intr",
        [NETIF_MSG_TX_DONE_BIT]         = "tx_done",
        [NETIF_MSG_RX_STATUS_BIT]       = "rx_status",
        [NETIF_MSG_PKTDATA_BIT]         = "pktdata",
        [NETIF_MSG_HW_BIT]              = "hw",
        [NETIF_MSG_WOL_BIT]             = "wol",
};
static_assert(ARRAY_SIZE(netif_msg_class_names) == NETIF_MSG_CLASS_COUNT);

const char wol_mode_names[][ETH_GSTRING_LEN] = {
        [const_ilog2(WAKE_PHY)]         = "phy",
        [const_ilog2(WAKE_UCAST)]       = "ucast",
        [const_ilog2(WAKE_MCAST)]       = "mcast",
        [const_ilog2(WAKE_BCAST)]       = "bcast",
        [const_ilog2(WAKE_ARP)]         = "arp",
        [const_ilog2(WAKE_MAGIC)]       = "magic",
        [const_ilog2(WAKE_MAGICSECURE)] = "magicsecure",
        [const_ilog2(WAKE_FILTER)]      = "filter",
};
static_assert(ARRAY_SIZE(wol_mode_names) == WOL_MODE_COUNT);

const char sof_timestamping_names[][ETH_GSTRING_LEN] = {
        [const_ilog2(SOF_TIMESTAMPING_TX_HARDWARE)]  = "hardware-transmit",
        [const_ilog2(SOF_TIMESTAMPING_TX_SOFTWARE)]  = "software-transmit",
        [const_ilog2(SOF_TIMESTAMPING_RX_HARDWARE)]  = "hardware-receive",
        [const_ilog2(SOF_TIMESTAMPING_RX_SOFTWARE)]  = "software-receive",
        [const_ilog2(SOF_TIMESTAMPING_SOFTWARE)]     = "software-system-clock",
        [const_ilog2(SOF_TIMESTAMPING_SYS_HARDWARE)] = "hardware-legacy-clock",
        [const_ilog2(SOF_TIMESTAMPING_RAW_HARDWARE)] = "hardware-raw-clock",
        [const_ilog2(SOF_TIMESTAMPING_OPT_ID)]       = "option-id",
        [const_ilog2(SOF_TIMESTAMPING_TX_SCHED)]     = "sched-transmit",
        [const_ilog2(SOF_TIMESTAMPING_TX_ACK)]       = "ack-transmit",
        [const_ilog2(SOF_TIMESTAMPING_OPT_CMSG)]     = "option-cmsg",
        [const_ilog2(SOF_TIMESTAMPING_OPT_TSONLY)]   = "option-tsonly",
        [const_ilog2(SOF_TIMESTAMPING_OPT_STATS)]    = "option-stats",
        [const_ilog2(SOF_TIMESTAMPING_OPT_PKTINFO)]  = "option-pktinfo",
        [const_ilog2(SOF_TIMESTAMPING_OPT_TX_SWHW)]  = "option-tx-swhw",
        [const_ilog2(SOF_TIMESTAMPING_BIND_PHC)]     = "bind-phc",
        [const_ilog2(SOF_TIMESTAMPING_OPT_ID_TCP)]   = "option-id-tcp",
        [const_ilog2(SOF_TIMESTAMPING_OPT_RX_FILTER)] = "option-rx-filter",
        [const_ilog2(SOF_TIMESTAMPING_TX_COMPLETION)] = "tx-completion",
};
static_assert(ARRAY_SIZE(sof_timestamping_names) == __SOF_TIMESTAMPING_CNT);

const char ts_tx_type_names[][ETH_GSTRING_LEN] = {
        [HWTSTAMP_TX_OFF]               = "off",
        [HWTSTAMP_TX_ON]                = "on",
        [HWTSTAMP_TX_ONESTEP_SYNC]      = "onestep-sync",
        [HWTSTAMP_TX_ONESTEP_P2P]       = "onestep-p2p",
};
static_assert(ARRAY_SIZE(ts_tx_type_names) == __HWTSTAMP_TX_CNT);

const char ts_rx_filter_names[][ETH_GSTRING_LEN] = {
        [HWTSTAMP_FILTER_NONE]                  = "none",
        [HWTSTAMP_FILTER_ALL]                   = "all",
        [HWTSTAMP_FILTER_SOME]                  = "some",
        [HWTSTAMP_FILTER_PTP_V1_L4_EVENT]       = "ptpv1-l4-event",
        [HWTSTAMP_FILTER_PTP_V1_L4_SYNC]        = "ptpv1-l4-sync",
        [HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ]   = "ptpv1-l4-delay-req",
        [HWTSTAMP_FILTER_PTP_V2_L4_EVENT]       = "ptpv2-l4-event",
        [HWTSTAMP_FILTER_PTP_V2_L4_SYNC]        = "ptpv2-l4-sync",
        [HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ]   = "ptpv2-l4-delay-req",
        [HWTSTAMP_FILTER_PTP_V2_L2_EVENT]       = "ptpv2-l2-event",
        [HWTSTAMP_FILTER_PTP_V2_L2_SYNC]        = "ptpv2-l2-sync",
        [HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ]   = "ptpv2-l2-delay-req",
        [HWTSTAMP_FILTER_PTP_V2_EVENT]          = "ptpv2-event",
        [HWTSTAMP_FILTER_PTP_V2_SYNC]           = "ptpv2-sync",
        [HWTSTAMP_FILTER_PTP_V2_DELAY_REQ]      = "ptpv2-delay-req",
        [HWTSTAMP_FILTER_NTP_ALL]               = "ntp-all",
};
static_assert(ARRAY_SIZE(ts_rx_filter_names) == __HWTSTAMP_FILTER_CNT);

const char ts_flags_names[][ETH_GSTRING_LEN] = {
        [const_ilog2(HWTSTAMP_FLAG_BONDED_PHC_INDEX)] = "bonded-phc-index",
};
static_assert(ARRAY_SIZE(ts_flags_names) == __HWTSTAMP_FLAG_CNT);

const char udp_tunnel_type_names[][ETH_GSTRING_LEN] = {
        [ETHTOOL_UDP_TUNNEL_TYPE_VXLAN]         = "vxlan",
        [ETHTOOL_UDP_TUNNEL_TYPE_GENEVE]        = "geneve",
        [ETHTOOL_UDP_TUNNEL_TYPE_VXLAN_GPE]     = "vxlan-gpe",
};
static_assert(ARRAY_SIZE(udp_tunnel_type_names) ==
              __ETHTOOL_UDP_TUNNEL_TYPE_CNT);

/* return false if legacy contained non-0 deprecated fields
 * maxtxpkt/maxrxpkt. rest of ksettings always updated
 */
bool
convert_legacy_settings_to_link_ksettings(
        struct ethtool_link_ksettings *link_ksettings,
        const struct ethtool_cmd *legacy_settings)
{
        bool retval = true;

        memset(link_ksettings, 0, sizeof(*link_ksettings));

        /* This is used to tell users that driver is still using these
         * deprecated legacy fields, and they should not use
         * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
         */
        if (legacy_settings->maxtxpkt ||
            legacy_settings->maxrxpkt)
                retval = false;

        ethtool_convert_legacy_u32_to_link_mode(
                link_ksettings->link_modes.supported,
                legacy_settings->supported);
        ethtool_convert_legacy_u32_to_link_mode(
                link_ksettings->link_modes.advertising,
                legacy_settings->advertising);
        ethtool_convert_legacy_u32_to_link_mode(
                link_ksettings->link_modes.lp_advertising,
                legacy_settings->lp_advertising);
        link_ksettings->base.speed
                = ethtool_cmd_speed(legacy_settings);
        link_ksettings->base.duplex
                = legacy_settings->duplex;
        link_ksettings->base.port
                = legacy_settings->port;
        link_ksettings->base.phy_address
                = legacy_settings->phy_address;
        link_ksettings->base.autoneg
                = legacy_settings->autoneg;
        link_ksettings->base.mdio_support
                = legacy_settings->mdio_support;
        link_ksettings->base.eth_tp_mdix
                = legacy_settings->eth_tp_mdix;
        link_ksettings->base.eth_tp_mdix_ctrl
                = legacy_settings->eth_tp_mdix_ctrl;
        return retval;
}

int __ethtool_get_link(struct net_device *dev)
{
        if (!dev->ethtool_ops->get_link)
                return -EOPNOTSUPP;

        return netif_running(dev) && dev->ethtool_ops->get_link(dev);
}

int ethtool_get_rx_ring_count(struct net_device *dev)
{
        const struct ethtool_ops *ops = dev->ethtool_ops;

        if (!ops->get_rx_ring_count)
                return -EOPNOTSUPP;

        return ops->get_rx_ring_count(dev);
}

static int ethtool_get_rxnfc_rule_count(struct net_device *dev)
{
        const struct ethtool_ops *ops = dev->ethtool_ops;
        struct ethtool_rxnfc info = {
                .cmd = ETHTOOL_GRXCLSRLCNT,
        };
        int err;

        err = ops->get_rxnfc(dev, &info, NULL);
        if (err)
                return err;

        return info.rule_cnt;
}

/* Max offset for one RSS context */
static u32 ethtool_get_rss_ctx_max_channel(struct ethtool_rxfh_context *ctx)
{
        u32 max_ring = 0;
        u32 i, *tbl;

        if (WARN_ON_ONCE(!ctx))
                return 0;
        tbl = ethtool_rxfh_context_indir(ctx);
        for (i = 0; i < ctx->indir_size; i++)
                max_ring = max(max_ring, tbl[i]);
        return max_ring;
}

static int ethtool_get_max_rxnfc_channel(struct net_device *dev, u64 *max)
{
        const struct ethtool_ops *ops = dev->ethtool_ops;
        struct ethtool_rxnfc *info;
        int err, i, rule_cnt;
        u64 max_ring = 0;

        if (!ops->get_rxnfc)
                return -EOPNOTSUPP;

        rule_cnt = ethtool_get_rxnfc_rule_count(dev);
        if (rule_cnt <= 0)
                return -EINVAL;

        info = kvzalloc_flex(*info, rule_locs, rule_cnt);
        if (!info)
                return -ENOMEM;

        info->cmd = ETHTOOL_GRXCLSRLALL;
        info->rule_cnt = rule_cnt;
        err = ops->get_rxnfc(dev, info, info->rule_locs);
        if (err)
                goto err_free_info;

        for (i = 0; i < rule_cnt; i++) {
                struct ethtool_rxnfc rule_info = {
                        .cmd = ETHTOOL_GRXCLSRULE,
                        .fs.location = info->rule_locs[i],
                };

                err = ops->get_rxnfc(dev, &rule_info, NULL);
                if (err)
                        goto err_free_info;

                if (rule_info.fs.ring_cookie != RX_CLS_FLOW_DISC &&
                    rule_info.fs.ring_cookie != RX_CLS_FLOW_WAKE &&
                    !ethtool_get_flow_spec_ring_vf(rule_info.fs.ring_cookie)) {
                        u64 ring = rule_info.fs.ring_cookie;

                        if (rule_info.flow_type & FLOW_RSS) {
                                struct ethtool_rxfh_context *ctx;

                                ctx = xa_load(&dev->ethtool->rss_ctx,
                                              rule_info.rss_context);
                                ring += ethtool_get_rss_ctx_max_channel(ctx);
                        }
                        max_ring = max_t(u64, max_ring, ring);
                }
        }

        kvfree(info);
        *max = max_ring;
        return 0;

err_free_info:
        kvfree(info);
        return err;
}

/* Max offset across all of a device's RSS contexts */
static u32 ethtool_get_max_rss_ctx_channel(struct net_device *dev)
{
        struct ethtool_rxfh_context *ctx;
        unsigned long context;
        u32 max_ring = 0;

        mutex_lock(&dev->ethtool->rss_lock);
        xa_for_each(&dev->ethtool->rss_ctx, context, ctx)
                max_ring = max(max_ring, ethtool_get_rss_ctx_max_channel(ctx));
        mutex_unlock(&dev->ethtool->rss_lock);

        return max_ring;
}

static u32 ethtool_get_max_rxfh_channel(struct net_device *dev)
{
        struct ethtool_rxfh_param rxfh = {};
        u32 dev_size, current_max = 0;
        int ret;

        /* While we do track whether RSS context has an indirection
         * table explicitly set by the user, no driver looks at that bit.
         * Assume drivers won't auto-regenerate the additional tables,
         * to be safe.
         */
        current_max = ethtool_get_max_rss_ctx_channel(dev);

        if (!netif_is_rxfh_configured(dev))
                return current_max;

        if (!dev->ethtool_ops->get_rxfh_indir_size ||
            !dev->ethtool_ops->get_rxfh)
                return current_max;
        dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
        if (dev_size == 0)
                return current_max;

        rxfh.indir = kzalloc_objs(rxfh.indir[0], dev_size, GFP_USER);
        if (!rxfh.indir)
                return U32_MAX;

        mutex_lock(&dev->ethtool->rss_lock);
        ret = dev->ethtool_ops->get_rxfh(dev, &rxfh);
        mutex_unlock(&dev->ethtool->rss_lock);
        if (ret) {
                current_max = U32_MAX;
                goto out_free;
        }

        while (dev_size--)
                current_max = max(current_max, rxfh.indir[dev_size]);

out_free:
        kfree(rxfh.indir);
        return current_max;
}

int ethtool_check_max_channel(struct net_device *dev,
                              struct ethtool_channels channels,
                              struct genl_info *info)
{
        u64 max_rxnfc_in_use;
        u32 max_rxfh_in_use;
        int max_mp_in_use;

        /* ensure the new Rx count fits within the configured Rx flow
         * indirection table/rxnfc settings
         */
        if (ethtool_get_max_rxnfc_channel(dev, &max_rxnfc_in_use))
                max_rxnfc_in_use = 0;
        max_rxfh_in_use = ethtool_get_max_rxfh_channel(dev);
        if (channels.combined_count + channels.rx_count <= max_rxfh_in_use) {
                if (info)
                        GENL_SET_ERR_MSG_FMT(info, "requested channel counts are too low for existing indirection table (%d)", max_rxfh_in_use);
                return -EINVAL;
        }
        if (channels.combined_count + channels.rx_count <= max_rxnfc_in_use) {
                if (info)
                        GENL_SET_ERR_MSG(info, "requested channel counts are too low for existing ntuple filter settings");
                return -EINVAL;
        }

        max_mp_in_use = dev_get_min_mp_channel_count(dev);
        if (channels.combined_count + channels.rx_count <= max_mp_in_use) {
                if (info)
                        GENL_SET_ERR_MSG_FMT(info, "requested channel counts are too low for existing memory provider setting (%d)", max_mp_in_use);
                return -EINVAL;
        }

        return 0;
}

int ethtool_check_rss_ctx_busy(struct net_device *dev, u32 rss_context)
{
        const struct ethtool_ops *ops = dev->ethtool_ops;
        struct ethtool_rxnfc *info;
        int rc, i, rule_cnt;

        if (!ops->get_rxnfc)
                return 0;

        rule_cnt = ethtool_get_rxnfc_rule_count(dev);
        if (!rule_cnt)
                return 0;

        if (rule_cnt < 0)
                return -EINVAL;

        info = kvzalloc_flex(*info, rule_locs, rule_cnt);
        if (!info)
                return -ENOMEM;

        info->cmd = ETHTOOL_GRXCLSRLALL;
        info->rule_cnt = rule_cnt;
        rc = ops->get_rxnfc(dev, info, info->rule_locs);
        if (rc)
                goto out_free;

        for (i = 0; i < rule_cnt; i++) {
                struct ethtool_rxnfc rule_info = {
                        .cmd = ETHTOOL_GRXCLSRULE,
                        .fs.location = info->rule_locs[i],
                };

                rc = ops->get_rxnfc(dev, &rule_info, NULL);
                if (rc)
                        goto out_free;

                if (rule_info.fs.flow_type & FLOW_RSS &&
                    rule_info.rss_context == rss_context) {
                        rc = -EBUSY;
                        goto out_free;
                }
        }

out_free:
        kvfree(info);
        return rc;
}

struct ethtool_rxfh_context *
ethtool_rxfh_ctx_alloc(const struct ethtool_ops *ops,
                       u32 indir_size, u32 key_size)
{
        size_t indir_bytes, flex_len, key_off, size;
        struct ethtool_rxfh_context *ctx;
        u32 priv_bytes, indir_max;
        u16 key_max;

        key_max = max(key_size, ops->rxfh_key_space);
        indir_max = max(indir_size, ops->rxfh_indir_space);

        priv_bytes = ALIGN(ops->rxfh_priv_size, sizeof(u32));
        indir_bytes = array_size(indir_max, sizeof(u32));

        key_off = size_add(priv_bytes, indir_bytes);
        flex_len = size_add(key_off, key_max);
        size = struct_size_t(struct ethtool_rxfh_context, data, flex_len);

        ctx = kzalloc(size, GFP_KERNEL_ACCOUNT);
        if (!ctx)
                return NULL;

        ctx->indir_size = indir_size;
        ctx->key_size = key_size;
        ctx->key_off = key_off;
        ctx->priv_size = ops->rxfh_priv_size;

        return ctx;
}

/* Check if fields configured for flow hash are symmetric - if src is included
 * so is dst and vice versa.
 */
int ethtool_rxfh_config_is_sym(u64 rxfh)
{
        bool sym;

        sym = rxfh == (rxfh & (RXH_IP_SRC | RXH_IP_DST |
                               RXH_L4_B_0_1 | RXH_L4_B_2_3));
        sym &= !!(rxfh & RXH_IP_SRC)   == !!(rxfh & RXH_IP_DST);
        sym &= !!(rxfh & RXH_L4_B_0_1) == !!(rxfh & RXH_L4_B_2_3);

        return sym;
}

int ethtool_check_ops(const struct ethtool_ops *ops)
{
        if (WARN_ON(ops->set_coalesce && !ops->supported_coalesce_params))
                return -EINVAL;
        if (WARN_ON(ops->rxfh_max_num_contexts == 1))
                return -EINVAL;
        if (WARN_ON(ops->supported_input_xfrm && !ops->get_rxfh_fields))
                return -EINVAL;
        if (WARN_ON(ops->supported_input_xfrm &&
                    ops->rxfh_per_ctx_fields != ops->rxfh_per_ctx_key))
                return -EINVAL;

        /* NOTE: sufficiently insane drivers may swap ethtool_ops at runtime,
         * the fact that ops are checked at registration time does not
         * mean the ops attached to a netdev later on are sane.
         */
        return 0;
}

void ethtool_ringparam_get_cfg(struct net_device *dev,
                               struct ethtool_ringparam *param,
                               struct kernel_ethtool_ringparam *kparam,
                               struct netlink_ext_ack *extack)
{
        memset(param, 0, sizeof(*param));
        memset(kparam, 0, sizeof(*kparam));

        param->cmd = ETHTOOL_GRINGPARAM;
        dev->ethtool_ops->get_ringparam(dev, param, kparam, extack);

        /* Driver gives us current state, we want to return current config */
        kparam->tcp_data_split = dev->cfg->hds_config;
        kparam->hds_thresh = dev->cfg->hds_thresh;
}

static void ethtool_init_tsinfo(struct kernel_ethtool_ts_info *info)
{
        memset(info, 0, sizeof(*info));
        info->cmd = ETHTOOL_GET_TS_INFO;
        info->phc_index = -1;
}

int ethtool_net_get_ts_info_by_phc(struct net_device *dev,
                                   struct kernel_ethtool_ts_info *info,
                                   struct hwtstamp_provider_desc *hwprov_desc)
{
        const struct ethtool_ops *ops = dev->ethtool_ops;
        int err;

        if (!ops->get_ts_info)
                return -EOPNOTSUPP;

        /* Does ptp comes from netdev */
        ethtool_init_tsinfo(info);
        info->phc_qualifier = hwprov_desc->qualifier;
        err = ops->get_ts_info(dev, info);
        if (err)
                return err;

        if (info->phc_index == hwprov_desc->index &&
            net_support_hwtstamp_qualifier(dev, hwprov_desc->qualifier))
                return 0;

        return -ENODEV;
}

struct phy_device *
ethtool_phy_get_ts_info_by_phc(struct net_device *dev,
                               struct kernel_ethtool_ts_info *info,
                               struct hwtstamp_provider_desc *hwprov_desc)
{
        int err;

        /* Only precise qualifier is supported in phydev */
        if (hwprov_desc->qualifier != HWTSTAMP_PROVIDER_QUALIFIER_PRECISE)
                return ERR_PTR(-ENODEV);

        /* Look in the phy topology */
        if (dev->link_topo) {
                struct phy_device_node *pdn;
                unsigned long phy_index;

                xa_for_each(&dev->link_topo->phys, phy_index, pdn) {
                        if (!phy_has_tsinfo(pdn->phy))
                                continue;

                        ethtool_init_tsinfo(info);
                        err = phy_ts_info(pdn->phy, info);
                        if (err)
                                return ERR_PTR(err);

                        if (info->phc_index == hwprov_desc->index)
                                return pdn->phy;
                }
                return ERR_PTR(-ENODEV);
        }

        /* Look on the dev->phydev */
        if (phy_has_tsinfo(dev->phydev)) {
                ethtool_init_tsinfo(info);
                err = phy_ts_info(dev->phydev, info);
                if (err)
                        return ERR_PTR(err);

                if (info->phc_index == hwprov_desc->index)
                        return dev->phydev;
        }

        return ERR_PTR(-ENODEV);
}

int ethtool_get_ts_info_by_phc(struct net_device *dev,
                               struct kernel_ethtool_ts_info *info,
                               struct hwtstamp_provider_desc *hwprov_desc)
{
        int err;

        err = ethtool_net_get_ts_info_by_phc(dev, info, hwprov_desc);
        if (err == -ENODEV || err == -EOPNOTSUPP) {
                struct phy_device *phy;

                phy = ethtool_phy_get_ts_info_by_phc(dev, info, hwprov_desc);
                if (IS_ERR(phy))
                        return PTR_ERR(phy);

                /* Report the phc source only if we have a real
                 * phc source with an index.
                 */
                if (info->phc_index >= 0) {
                        info->phc_source = HWTSTAMP_SOURCE_PHYLIB;
                        info->phc_phyindex = phy->phyindex;
                }
                err = 0;
        } else if (!err && info->phc_index >= 0) {
                info->phc_source = HWTSTAMP_SOURCE_NETDEV;
        }

        info->so_timestamping |= SOF_TIMESTAMPING_RX_SOFTWARE |
                                 SOF_TIMESTAMPING_SOFTWARE;

        return err;
}

int __ethtool_get_ts_info(struct net_device *dev,
                          struct kernel_ethtool_ts_info *info)
{
        struct hwtstamp_provider *hwprov;
        int err = 0;

        rcu_read_lock();
        hwprov = rcu_dereference(dev->hwprov);
        /* No provider specified, use default behavior */
        if (!hwprov) {
                const struct ethtool_ops *ops = dev->ethtool_ops;
                struct phy_device *phydev = dev->phydev;

                ethtool_init_tsinfo(info);
                if (phy_is_default_hwtstamp(phydev) &&
                    phy_has_tsinfo(phydev)) {
                        err = phy_ts_info(phydev, info);
                        /* Report the phc source only if we have a real
                         * phc source with an index.
                         */
                        if (!err && info->phc_index >= 0) {
                                info->phc_source = HWTSTAMP_SOURCE_PHYLIB;
                                info->phc_phyindex = phydev->phyindex;
                        }
                } else if (ops->get_ts_info) {
                        err = ops->get_ts_info(dev, info);
                        if (!err && info->phc_index >= 0)
                                info->phc_source = HWTSTAMP_SOURCE_NETDEV;
                }

                info->so_timestamping |= SOF_TIMESTAMPING_RX_SOFTWARE |
                                         SOF_TIMESTAMPING_SOFTWARE;

                rcu_read_unlock();
                return err;
        }

        err = ethtool_get_ts_info_by_phc(dev, info, &hwprov->desc);
        rcu_read_unlock();
        return err;
}

bool net_support_hwtstamp_qualifier(struct net_device *dev,
                                    enum hwtstamp_provider_qualifier qualifier)
{
        const struct ethtool_ops *ops = dev->ethtool_ops;

        if (!ops)
                return false;

        /* Return true with precise qualifier and with NIC without
         * qualifier description to not break the old behavior.
         */
        if (!ops->supported_hwtstamp_qualifiers &&
            qualifier == HWTSTAMP_PROVIDER_QUALIFIER_PRECISE)
                return true;

        if (ops->supported_hwtstamp_qualifiers & BIT(qualifier))
                return true;

        return false;
}

int ethtool_get_phc_vclocks(struct net_device *dev, int **vclock_index)
{
        struct kernel_ethtool_ts_info info = { };
        int num = 0;

        if (!__ethtool_get_ts_info(dev, &info))
                num = ptp_get_vclocks_index(info.phc_index, vclock_index);

        return num;
}
EXPORT_SYMBOL(ethtool_get_phc_vclocks);

int ethtool_get_ts_info_by_layer(struct net_device *dev, struct kernel_ethtool_ts_info *info)
{
        return __ethtool_get_ts_info(dev, info);
}
EXPORT_SYMBOL(ethtool_get_ts_info_by_layer);

const struct ethtool_phy_ops *ethtool_phy_ops;

void ethtool_set_ethtool_phy_ops(const struct ethtool_phy_ops *ops)
{
        ASSERT_RTNL();
        ethtool_phy_ops = ops;
}
EXPORT_SYMBOL_GPL(ethtool_set_ethtool_phy_ops);

void
ethtool_params_from_link_mode(struct ethtool_link_ksettings *link_ksettings,
                              enum ethtool_link_mode_bit_indices link_mode)
{
        const struct link_mode_info *link_info;

        if (WARN_ON_ONCE(link_mode >= __ETHTOOL_LINK_MODE_MASK_NBITS))
                return;

        link_info = &link_mode_params[link_mode];
        link_ksettings->base.speed = link_info->speed;
        link_ksettings->lanes = link_info->lanes;
        link_ksettings->base.duplex = link_info->duplex;
}
EXPORT_SYMBOL_GPL(ethtool_params_from_link_mode);

/**
 * ethtool_forced_speed_maps_init
 * @maps: Pointer to an array of Ethtool forced speed map
 * @size: Array size
 *
 * Initialize an array of Ethtool forced speed map to Ethtool link modes. This
 * should be called during driver module init.
 */
void
ethtool_forced_speed_maps_init(struct ethtool_forced_speed_map *maps, u32 size)
{
        for (u32 i = 0; i < size; i++) {
                struct ethtool_forced_speed_map *map = &maps[i];

                linkmode_set_bit_array(map->cap_arr, map->arr_size, map->caps);
                map->cap_arr = NULL;
                map->arr_size = 0;
        }
}
EXPORT_SYMBOL_GPL(ethtool_forced_speed_maps_init);

void ethtool_rxfh_context_lost(struct net_device *dev, u32 context_id)
{
        struct ethtool_rxfh_context *ctx;

        WARN_ONCE(!rtnl_is_locked() &&
                  !lockdep_is_held_type(&dev->ethtool->rss_lock, -1),
                  "RSS context lock assertion failed\n");

        netdev_err(dev, "device error, RSS context %d lost\n", context_id);
        ctx = xa_erase(&dev->ethtool->rss_ctx, context_id);
        kfree(ctx);
        ethtool_rss_notify(dev, ETHTOOL_MSG_RSS_DELETE_NTF, context_id);
}
EXPORT_SYMBOL(ethtool_rxfh_context_lost);

enum ethtool_link_medium ethtool_str_to_medium(const char *str)
{
        int i;

        for (i = 0; i < __ETHTOOL_LINK_MEDIUM_LAST; i++)
                if (!strcmp(ethtool_link_medium_names[i], str))
                        return i;

        return ETHTOOL_LINK_MEDIUM_NONE;
}
EXPORT_SYMBOL_GPL(ethtool_str_to_medium);