From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id A748943BFE; Sun, 3 Mar 2024 10:58:20 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 2DA58402F0; Sun, 3 Mar 2024 10:58:20 +0100 (CET) Received: from fhigh6-smtp.messagingengine.com (fhigh6-smtp.messagingengine.com [103.168.172.157]) by mails.dpdk.org (Postfix) with ESMTP id 44A5E402BD for ; Sun, 3 Mar 2024 10:58:18 +0100 (CET) Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailfhigh.nyi.internal (Postfix) with ESMTP id 9D82A11400E9; Sun, 3 Mar 2024 04:58:17 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Sun, 03 Mar 2024 04:58:17 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=monjalon.net; h= cc:cc:content-transfer-encoding:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:subject:subject:to:to; s=fm1; t=1709459897; x= 1709546297; bh=RhbxyHoTmLwHHe7EZPlAHXSyWhIJ0VF15UW87GPdcZg=; b=a 3ID0iVhA4crF0a92M+7Klbqwcna/BH8qpn+txC+WzCLsIbfa8+7CWMUOJqoRH8ZT 3Ynrde7OzPr1AevgQk8vqr8XVvZsVZTk+3V/C4pfttYvb407YJIXQ1zClx30UJ2O trTDty0jda+rNk3ZMfbpbfauDCkA+SmvwFE7B5hFdldX8GQ/wQJXqJ01gKaau8iQ EPy70idF0/a3ob8HIa51LwQ6Q3LWqD/IV6qRcDatkxtUazCpg5+1/VAq/HEnq7c8 gefPN+MVKRNJioAVng6xBBmitgY1KfZxui0vnf/zOwn6/JubAy8omW2fmjWgOhd5 JmNkgybZNGoOjr+lPkTtA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm1; t=1709459897; x= 1709546297; bh=RhbxyHoTmLwHHe7EZPlAHXSyWhIJ0VF15UW87GPdcZg=; b=O p1OO83TbrZ1zDtdUqIeAZKLrsKPtyeOCJiambIsJe7wbgJDftWOLnU3DUx64Mdn4 V5hZ7pcV14nHIE4JKFVi49INV6iyl9YgyMLI40h6y7Zr9LEQvmXuNZGkNOHis6Pi FY4/HeCNeQCXz0G8muk83PCFhcSpezCAtwEXXVmfgX1XAhr2OUwulboRw78bG5XB 54V3rgvnvOTsMIdWVQS/fAYdKZCpkyP6QcQF7/+eCQU0CbX7WnU1JlIzNumW3JG5 ofbVBMkTvv4mfENjJYzv90L6igJ5TIfdwY6OQAls/+7bqyodK5CG3N/cMEzi0bt/ Aoz65RHFH9GetwpTZVrHQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvledrheehgddtlecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefhvfevufffkffojghfggfgsedtkeertdertddtnecuhfhrohhmpefvhhhomhgr shcuofhonhhjrghlohhnuceothhhohhmrghssehmohhnjhgrlhhonhdrnhgvtheqnecugg ftrfgrthhtvghrnhepvdejhfdugeehvddtieejieegteeuudfgjeeukeeiledthfetveek hefhieelhfdtnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrh homhepthhhohhmrghssehmohhnjhgrlhhonhdrnhgvth X-ME-Proxy: Feedback-ID: i47234305:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Sun, 3 Mar 2024 04:58:15 -0500 (EST) From: Thomas Monjalon To: dev@dpdk.org Cc: stephen@networkplumber.org, mb@smartsharesystems.com, Ferruh Yigit , Andrew Rybchenko Subject: [PATCH v3] ethdev: add Linux ethtool link mode conversion Date: Sun, 3 Mar 2024 10:56:44 +0100 Message-ID: <20240303095812.2235050-1-thomas@monjalon.net> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240229123653.1379466-1-thomas@monjalon.net> References: <20240229123653.1379466-1-thomas@monjalon.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Speed capabilities of a NIC may be discovered through its Linux kernel driver. It is especially useful for bifurcated drivers, so they don't have to duplicate the same logic in the DPDK driver. Parsing ethtool speed capabilities is made easy thanks to the functions added in ethdev for internal usage only. Of course these functions work only on Linux, so they are not compiled in other environments. In order to ease parsing, the ethtool macro names are parsed externally in a shell command which generates a C array included in this patch. It also avoids to depend on a kernel version. This C array should be updated in future to get latest ethtool bits. Note it is easier to update this array than adding new cases in a parsing code. The types in the functions are following the ethtool type: uint32_t for bitmaps, and int8_t for the number of 32-bitmaps. Signed-off-by: Thomas Monjalon --- A follow-up patch will be sent to use these functions in mlx5. I suspect mana could use this parsing as well. v2: fix style and Windows build v3: make table const --- lib/ethdev/ethdev_linux_ethtool.c | 161 ++++++++++++++++++++++++++++++ lib/ethdev/ethdev_linux_ethtool.h | 41 ++++++++ lib/ethdev/meson.build | 9 ++ lib/ethdev/version.map | 3 + 4 files changed, 214 insertions(+) create mode 100644 lib/ethdev/ethdev_linux_ethtool.c create mode 100644 lib/ethdev/ethdev_linux_ethtool.h diff --git a/lib/ethdev/ethdev_linux_ethtool.c b/lib/ethdev/ethdev_linux_ethtool.c new file mode 100644 index 0000000000..e792204b01 --- /dev/null +++ b/lib/ethdev/ethdev_linux_ethtool.c @@ -0,0 +1,161 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright (c) 2024 NVIDIA Corporation & Affiliates + */ + +#include + +#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 const 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 +#include + +#include + +#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..79f6f5293b 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; # WINDOWS_NO_EXPORT + rte_eth_link_speed_glink; # WINDOWS_NO_EXPORT + rte_eth_link_speed_gset; # WINDOWS_NO_EXPORT rte_eth_pkt_burst_dummy; rte_eth_representor_id_get; rte_eth_switch_domain_alloc; -- 2.43.0