133 lines
3.6 KiB
Diff
133 lines
3.6 KiB
Diff
From c49aebd76637b284358e3705c4642286f996b607 Mon Sep 17 00:00:00 2001
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From: Kamal Heib <kheib@redhat.com>
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Date: Thu, 16 Apr 2026 18:03:17 -0400
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Subject: [PATCH] net/mlx5: Expose serial numbers in devlink info
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JIRA: https://redhat.atlassian.net/browse/RHEL-169055
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commit 18667214b955ef89f208d451820c39a5dfd77f27
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Author: Jiri Pirko <jiri@resnulli.us>
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Date: Tue Jun 10 04:51:28 2025 +0200
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net/mlx5: Expose serial numbers in devlink info
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Devlink info allows to expose serial number and board serial number
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Get the values from PCI VPD and expose it.
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$ devlink dev info
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pci/0000:08:00.0:
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driver mlx5_core
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serial_number e4397f872caeed218000846daa7d2f49
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board.serial_number MT2314XZ00YA
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versions:
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fixed:
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fw.psid MT_0000000894
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running:
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fw.version 28.41.1000
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fw 28.41.1000
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stored:
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fw.version 28.41.1000
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fw 28.41.1000
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auxiliary/mlx5_core.eth.0:
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driver mlx5_core.eth
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pci/0000:08:00.1:
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driver mlx5_core
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serial_number e4397f872caeed218000846daa7d2f49
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board.serial_number MT2314XZ00YA
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versions:
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fixed:
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fw.psid MT_0000000894
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running:
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fw.version 28.41.1000
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fw 28.41.1000
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stored:
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fw.version 28.41.1000
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fw 28.41.1000
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auxiliary/mlx5_core.eth.1:
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driver mlx5_core.eth
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Signed-off-by: Jiri Pirko <jiri@nvidia.com>
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Reviewed-by: Parav Pandit <parav@nvidia.com>
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Reviewed-by: Simon Horman <horms@kernel.org>
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Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
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Acked-by: Tariq Toukan <tariqt@nvidia.com>
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Link: https://patch.msgid.link/20250610025128.109232-1-jiri@resnulli.us
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Signed-off-by: Kamal Heib <kheib@redhat.com>
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diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
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index 3b27da79ba94..4b536b384fc0 100644
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--- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
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+++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
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@@ -35,6 +35,55 @@ static u16 mlx5_fw_ver_subminor(u32 version)
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return version & 0xffff;
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}
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+static int mlx5_devlink_serial_numbers_put(struct mlx5_core_dev *dev,
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+ struct devlink_info_req *req,
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+ struct netlink_ext_ack *extack)
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+{
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+ struct pci_dev *pdev = dev->pdev;
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+ unsigned int vpd_size, kw_len;
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+ char *str, *end;
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+ u8 *vpd_data;
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+ int err = 0;
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+ int start;
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+
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+ vpd_data = pci_vpd_alloc(pdev, &vpd_size);
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+ if (IS_ERR(vpd_data))
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+ return 0;
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+
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+ start = pci_vpd_find_ro_info_keyword(vpd_data, vpd_size,
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+ PCI_VPD_RO_KEYWORD_SERIALNO, &kw_len);
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+ if (start >= 0) {
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+ str = kstrndup(vpd_data + start, kw_len, GFP_KERNEL);
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+ if (!str) {
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+ err = -ENOMEM;
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+ goto end;
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+ }
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+ end = strchrnul(str, ' ');
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+ *end = '\0';
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+ err = devlink_info_board_serial_number_put(req, str);
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+ kfree(str);
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+ if (err)
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+ goto end;
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+ }
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+
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+ start = pci_vpd_find_ro_info_keyword(vpd_data, vpd_size, "V3", &kw_len);
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+ if (start >= 0) {
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+ str = kstrndup(vpd_data + start, kw_len, GFP_KERNEL);
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+ if (!str) {
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+ err = -ENOMEM;
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+ goto end;
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+ }
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+ err = devlink_info_serial_number_put(req, str);
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+ kfree(str);
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+ if (err)
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+ goto end;
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+ }
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+
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+end:
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+ kfree(vpd_data);
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+ return err;
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+}
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+
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#define DEVLINK_FW_STRING_LEN 32
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static int
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@@ -49,6 +98,10 @@ mlx5_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
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if (!mlx5_core_is_pf(dev))
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return 0;
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+ err = mlx5_devlink_serial_numbers_put(dev, req, extack);
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+ if (err)
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+ return err;
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+
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err = devlink_info_version_fixed_put(req, "fw.psid", dev->board_id);
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if (err)
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return err;
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--
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2.50.1 (Apple Git-155)
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