new file mode 100644
@@ -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);
+}
new file mode 100644
@@ -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 */
@@ -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
@@ -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;