diff --git a/lib/ethdev/ethdev_linux_ethtool.c b/lib/ethdev/ethdev_linux_ethtool.c
new file mode 100644
index 0000000000..fe98882b8a
--- /dev/null
+++ b/lib/ethdev/ethdev_linux_ethtool.c
@@ -0,0 +1,162 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2024 NVIDIA Corporation & Affiliates
+ */
+
+#include <rte_bitops.h>
+
+#include "rte_ethdev.h"
+#include "ethdev_linux_ethtool.h"
+
+/*
+Link modes sorted with index as defined in ethtool.
+Values are speed in Mbps with LSB indicating duplex.
+
+The ethtool bits definition should not change as it is a kernel API.
+Using raw numbers directly avoids checking API availability
+and allows to compile with new bits included even on an old kernel.
+
+The array below is built from bit definitions with this shell command:
+	sed -rn 's;.*(ETHTOOL_LINK_MODE_)([0-9]+)([0-9a-zA-Z_]*).*= *([0-9]*).*;'\
+		'[\4] = \2, /\* \1\2\3 *\/;p' /usr/include/linux/ethtool.h |
+	awk '/_Half_/{$3=$3+1","}1'
+*/
+static uint32_t link_modes[] = {
+	[  0] =      11, /* ETHTOOL_LINK_MODE_10baseT_Half_BIT */
+	[  1] =      10, /* ETHTOOL_LINK_MODE_10baseT_Full_BIT */
+	[  2] =     101, /* ETHTOOL_LINK_MODE_100baseT_Half_BIT */
+	[  3] =     100, /* ETHTOOL_LINK_MODE_100baseT_Full_BIT */
+	[  4] =    1001, /* ETHTOOL_LINK_MODE_1000baseT_Half_BIT */
+	[  5] =    1000, /* ETHTOOL_LINK_MODE_1000baseT_Full_BIT */
+	[ 12] =   10000, /* ETHTOOL_LINK_MODE_10000baseT_Full_BIT */
+	[ 15] =    2500, /* ETHTOOL_LINK_MODE_2500baseX_Full_BIT */
+	[ 17] =    1000, /* ETHTOOL_LINK_MODE_1000baseKX_Full_BIT */
+	[ 18] =   10000, /* ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT */
+	[ 19] =   10000, /* ETHTOOL_LINK_MODE_10000baseKR_Full_BIT */
+	[ 20] =   10000, /* ETHTOOL_LINK_MODE_10000baseR_FEC_BIT */
+	[ 21] =   20000, /* ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT */
+	[ 22] =   20000, /* ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT */
+	[ 23] =   40000, /* ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT */
+	[ 24] =   40000, /* ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT */
+	[ 25] =   40000, /* ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT */
+	[ 26] =   40000, /* ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT */
+	[ 27] =   56000, /* ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT */
+	[ 28] =   56000, /* ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT */
+	[ 29] =   56000, /* ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT */
+	[ 30] =   56000, /* ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT */
+	[ 31] =   25000, /* ETHTOOL_LINK_MODE_25000baseCR_Full_BIT */
+	[ 32] =   25000, /* ETHTOOL_LINK_MODE_25000baseKR_Full_BIT */
+	[ 33] =   25000, /* ETHTOOL_LINK_MODE_25000baseSR_Full_BIT */
+	[ 34] =   50000, /* ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT */
+	[ 35] =   50000, /* ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT */
+	[ 36] =  100000, /* ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT */
+	[ 37] =  100000, /* ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT */
+	[ 38] =  100000, /* ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT */
+	[ 39] =  100000, /* ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT */
+	[ 40] =   50000, /* ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT */
+	[ 41] =    1000, /* ETHTOOL_LINK_MODE_1000baseX_Full_BIT */
+	[ 42] =   10000, /* ETHTOOL_LINK_MODE_10000baseCR_Full_BIT */
+	[ 43] =   10000, /* ETHTOOL_LINK_MODE_10000baseSR_Full_BIT */
+	[ 44] =   10000, /* ETHTOOL_LINK_MODE_10000baseLR_Full_BIT */
+	[ 45] =   10000, /* ETHTOOL_LINK_MODE_10000baseLRM_Full_BIT */
+	[ 46] =   10000, /* ETHTOOL_LINK_MODE_10000baseER_Full_BIT */
+	[ 47] =    2500, /* ETHTOOL_LINK_MODE_2500baseT_Full_BIT */
+	[ 48] =    5000, /* ETHTOOL_LINK_MODE_5000baseT_Full_BIT */
+	[ 52] =   50000, /* ETHTOOL_LINK_MODE_50000baseKR_Full_BIT */
+	[ 53] =   50000, /* ETHTOOL_LINK_MODE_50000baseSR_Full_BIT */
+	[ 54] =   50000, /* ETHTOOL_LINK_MODE_50000baseCR_Full_BIT */
+	[ 55] =   50000, /* ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT */
+	[ 56] =   50000, /* ETHTOOL_LINK_MODE_50000baseDR_Full_BIT */
+	[ 57] =  100000, /* ETHTOOL_LINK_MODE_100000baseKR2_Full_BIT */
+	[ 58] =  100000, /* ETHTOOL_LINK_MODE_100000baseSR2_Full_BIT */
+	[ 59] =  100000, /* ETHTOOL_LINK_MODE_100000baseCR2_Full_BIT */
+	[ 60] =  100000, /* ETHTOOL_LINK_MODE_100000baseLR2_ER2_FR2_Full_BIT */
+	[ 61] =  100000, /* ETHTOOL_LINK_MODE_100000baseDR2_Full_BIT */
+	[ 62] =  200000, /* ETHTOOL_LINK_MODE_200000baseKR4_Full_BIT */
+	[ 63] =  200000, /* ETHTOOL_LINK_MODE_200000baseSR4_Full_BIT */
+	[ 64] =  200000, /* ETHTOOL_LINK_MODE_200000baseLR4_ER4_FR4_Full_BIT */
+	[ 65] =  200000, /* ETHTOOL_LINK_MODE_200000baseDR4_Full_BIT */
+	[ 66] =  200000, /* ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT */
+	[ 67] =     100, /* ETHTOOL_LINK_MODE_100baseT1_Full_BIT */
+	[ 68] =    1000, /* ETHTOOL_LINK_MODE_1000baseT1_Full_BIT */
+	[ 69] =  400000, /* ETHTOOL_LINK_MODE_400000baseKR8_Full_BIT */
+	[ 70] =  400000, /* ETHTOOL_LINK_MODE_400000baseSR8_Full_BIT */
+	[ 71] =  400000, /* ETHTOOL_LINK_MODE_400000baseLR8_ER8_FR8_Full_BIT */
+	[ 72] =  400000, /* ETHTOOL_LINK_MODE_400000baseDR8_Full_BIT */
+	[ 73] =  400000, /* ETHTOOL_LINK_MODE_400000baseCR8_Full_BIT */
+	[ 75] =  100000, /* ETHTOOL_LINK_MODE_100000baseKR_Full_BIT */
+	[ 76] =  100000, /* ETHTOOL_LINK_MODE_100000baseSR_Full_BIT */
+	[ 77] =  100000, /* ETHTOOL_LINK_MODE_100000baseLR_ER_FR_Full_BIT */
+	[ 78] =  100000, /* ETHTOOL_LINK_MODE_100000baseCR_Full_BIT */
+	[ 79] =  100000, /* ETHTOOL_LINK_MODE_100000baseDR_Full_BIT */
+	[ 80] =  200000, /* ETHTOOL_LINK_MODE_200000baseKR2_Full_BIT */
+	[ 81] =  200000, /* ETHTOOL_LINK_MODE_200000baseSR2_Full_BIT */
+	[ 82] =  200000, /* ETHTOOL_LINK_MODE_200000baseLR2_ER2_FR2_Full_BIT */
+	[ 83] =  200000, /* ETHTOOL_LINK_MODE_200000baseDR2_Full_BIT */
+	[ 84] =  200000, /* ETHTOOL_LINK_MODE_200000baseCR2_Full_BIT */
+	[ 85] =  400000, /* ETHTOOL_LINK_MODE_400000baseKR4_Full_BIT */
+	[ 86] =  400000, /* ETHTOOL_LINK_MODE_400000baseSR4_Full_BIT */
+	[ 87] =  400000, /* ETHTOOL_LINK_MODE_400000baseLR4_ER4_FR4_Full_BIT */
+	[ 88] =  400000, /* ETHTOOL_LINK_MODE_400000baseDR4_Full_BIT */
+	[ 89] =  400000, /* ETHTOOL_LINK_MODE_400000baseCR4_Full_BIT */
+	[ 90] =     101, /* ETHTOOL_LINK_MODE_100baseFX_Half_BIT */
+	[ 91] =     100, /* ETHTOOL_LINK_MODE_100baseFX_Full_BIT */
+	[ 92] =      10, /* ETHTOOL_LINK_MODE_10baseT1L_Full_BIT */
+	[ 93] =  800000, /* ETHTOOL_LINK_MODE_800000baseCR8_Full_BIT */
+	[ 94] =  800000, /* ETHTOOL_LINK_MODE_800000baseKR8_Full_BIT */
+	[ 95] =  800000, /* ETHTOOL_LINK_MODE_800000baseDR8_Full_BIT */
+	[ 96] =  800000, /* ETHTOOL_LINK_MODE_800000baseDR8_2_Full_BIT */
+	[ 97] =  800000, /* ETHTOOL_LINK_MODE_800000baseSR8_Full_BIT */
+	[ 98] =  800000, /* ETHTOOL_LINK_MODE_800000baseVR8_Full_BIT */
+	[ 99] =      10, /* ETHTOOL_LINK_MODE_10baseT1S_Full_BIT */
+	[100] =      11, /* ETHTOOL_LINK_MODE_10baseT1S_Half_BIT */
+	[101] =      11, /* ETHTOOL_LINK_MODE_10baseT1S_P2MP_Half_BIT */
+};
+
+uint32_t
+rte_eth_link_speed_ethtool(enum ethtool_link_mode_bit_indices bit)
+{
+	uint32_t speed;
+	int duplex;
+
+	/* get mode from array */
+	if (bit >= RTE_DIM(link_modes))
+		return RTE_ETH_LINK_SPEED_AUTONEG;
+	speed = link_modes[bit];
+	if (speed == 0)
+		return RTE_ETH_LINK_SPEED_AUTONEG;
+	RTE_BUILD_BUG_ON(RTE_ETH_LINK_SPEED_AUTONEG != 0);
+
+	/* duplex is LSB */
+	duplex = (speed & 1)?
+			RTE_ETH_LINK_HALF_DUPLEX:
+			RTE_ETH_LINK_FULL_DUPLEX;
+	speed &= RTE_GENMASK32(31, 1);
+
+	return rte_eth_speed_bitflag(speed, duplex);
+}
+
+uint32_t
+rte_eth_link_speed_glink(const uint32_t *bitmap, int8_t nwords)
+{
+	uint8_t word, bit;
+	uint32_t ethdev_bitmap = 0;
+
+	if (nwords < 1)
+		return 0;
+
+	for (word = 0; word < nwords; word ++) {
+		for (bit = 0; bit < 32; bit ++) {
+			if ((bitmap[word] & RTE_BIT32(bit)) == 0)
+				continue;
+			ethdev_bitmap |= rte_eth_link_speed_ethtool(word * 32 + bit);
+		}
+	}
+
+	return ethdev_bitmap;
+}
+
+uint32_t
+rte_eth_link_speed_gset(uint32_t legacy_bitmap)
+{
+	return rte_eth_link_speed_glink(&legacy_bitmap, 1);
+}
diff --git a/lib/ethdev/ethdev_linux_ethtool.h b/lib/ethdev/ethdev_linux_ethtool.h
new file mode 100644
index 0000000000..de235bd5f4
--- /dev/null
+++ b/lib/ethdev/ethdev_linux_ethtool.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2024 NVIDIA Corporation & Affiliates
+ */
+
+#ifndef ETHDEV_ETHTOOL_H
+#define ETHDEV_ETHTOOL_H
+
+#include <stdint.h>
+#include <linux/ethtool.h>
+
+#include <rte_compat.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Convert bit from ETHTOOL_LINK_MODE_* to RTE_ETH_LINK_SPEED_*
+ */
+__rte_internal
+uint32_t rte_eth_link_speed_ethtool(enum ethtool_link_mode_bit_indices bit);
+
+/*
+ * Convert bitmap from ETHTOOL_GLINKSETTINGS ethtool_link_settings::link_mode_masks
+ * to bitmap RTE_ETH_LINK_SPEED_*
+ */
+__rte_internal
+uint32_t rte_eth_link_speed_glink(const uint32_t *bitmap, int8_t nwords);
+
+/*
+ * Convert bitmap from deprecated ETHTOOL_GSET ethtool_cmd::supported
+ * to bitmap RTE_ETH_LINK_SPEED_*
+ */
+__rte_internal
+uint32_t rte_eth_link_speed_gset(uint32_t legacy_bitmap);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ETHDEV_ETHTOOL_H */
diff --git a/lib/ethdev/meson.build b/lib/ethdev/meson.build
index d11f06bc88..f1d2586591 100644
--- a/lib/ethdev/meson.build
+++ b/lib/ethdev/meson.build
@@ -44,6 +44,15 @@ driver_sdk_headers += files(
         'ethdev_vdev.h',
 )
 
+if is_linux
+    driver_sdk_headers += files(
+            'ethdev_linux_ethtool.h',
+    )
+    sources += files(
+            'ethdev_linux_ethtool.c',
+    )
+endif
+
 deps += ['net', 'kvargs', 'meter', 'telemetry']
 
 if is_freebsd
diff --git a/lib/ethdev/version.map b/lib/ethdev/version.map
index 17e4eac8a4..9a51f3a562 100644
--- a/lib/ethdev/version.map
+++ b/lib/ethdev/version.map
@@ -350,6 +350,9 @@ INTERNAL {
 	rte_eth_hairpin_queue_peer_unbind;
 	rte_eth_hairpin_queue_peer_update;
 	rte_eth_ip_reassembly_dynfield_register;
+	rte_eth_link_speed_ethtool;
+	rte_eth_link_speed_glink;
+	rte_eth_link_speed_gset;
 	rte_eth_pkt_burst_dummy;
 	rte_eth_representor_id_get;
 	rte_eth_switch_domain_alloc;
