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linux/net/ethtool/common.c
Maxime Chevallier 589e934d27 net: phy: Introduce PHY ports representation 
Ethernet provides a wide variety of layer 1 protocols and standards for
data transmission. The front-facing ports of an interface have their own
complexity and configurability.

Introduce a representation of these front-facing ports. The current code
is minimalistic and only support ports controlled by PHY devices, but
the plan is to extend that to SFP as well as raw Ethernet MACs that
don't use PHY devices.

This minimal port representation allows describing the media and number
of pairs of a BaseT port. From that information, we can derive the
linkmodes usable on the port, which can be used to limit the
capabilities of an interface.

For now, the port pairs and medium is derived from devicetree, defined
by the PHY driver, or populated with default values (as we assume that
all PHYs expose at least one port).

The typical example is 100M ethernet. 100BaseTX works using only 2
pairs on a Cat 5 cables. However, in the situation where a 10/100/1000
capable PHY is wired to its RJ45 port through 2 pairs only, we have no
way of detecting that. The "max-speed" DT property can be used, but a
more accurate representation can be used :

mdi {
	connector-0 {
		media = "BaseT";
		pairs = <2>;
	};
};

From that information, we can derive the max speed reachable on the
port.

Another benefit of having that is to avoid vendor-specific DT properties
(micrel,fiber-mode or ti,fiber-mode).

This basic representation is meant to be expanded, by the introduction
of port ops, userspace listing of ports, and support for multi-port
devices.

Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20260108080041.553250-4-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-13 18:52:34 -08:00

1231 lines
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// 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;
struct ethtool_rxnfc rx_rings = {};
int ret;
if (ops->get_rx_ring_count)
return ops->get_rx_ring_count(dev);
if (!ops->get_rxnfc)
return -EOPNOTSUPP;
rx_rings.cmd = ETHTOOL_GRXRINGS;
ret = ops->get_rxnfc(dev, &rx_rings, NULL);
if (ret < 0)
return ret;
return rx_rings.data;
}
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(struct_size(info, rule_locs, rule_cnt), GFP_KERNEL);
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 = kcalloc(dev_size, sizeof(rxfh.indir[0]), 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(struct_size(info, rule_locs, rule_cnt), GFP_KERNEL);
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;
ctx->hfunc = ETH_RSS_HASH_NO_CHANGE;
ctx->input_xfrm = RXH_XFRM_NO_CHANGE;
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);
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