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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
Get the values from PCI VPD and expose it.

$ devlink dev info
pci/0000:08:00.0:
  driver mlx5_core
  serial_number e4397f872caeed218000846daa7d2f49
  board.serial_number MT2314XZ00YA
  versions:
      fixed:
        fw.psid MT_0000000894
      running:
        fw.version 28.41.1000
        fw 28.41.1000
      stored:
        fw.version 28.41.1000
        fw 28.41.1000
auxiliary/mlx5_core.eth.0:
  driver mlx5_core.eth
pci/0000:08:00.1:
  driver mlx5_core
  serial_number e4397f872caeed218000846daa7d2f49
  board.serial_number MT2314XZ00YA
  versions:
      fixed:
        fw.psid MT_0000000894
      running:
        fw.version 28.41.1000
        fw 28.41.1000
      stored:
        fw.version 28.41.1000
        fw 28.41.1000
auxiliary/mlx5_core.eth.1:
  driver mlx5_core.eth

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Acked-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20250610025128.109232-1-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jiri Pirko 2025-06-10 04:51:28 +02:00 committed by Jakub Kicinski
parent a184bb1e71
commit 18667214b9
1 changed files with 53 additions and 0 deletions
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53
drivers/net/ethernet/mellanox/mlx5/core/devlink.c
View File

@ -35,6 +35,55 @@ static u16 mlx5_fw_ver_subminor(u32 version)
return version & 0xffff;
}
static int mlx5_devlink_serial_numbers_put(struct mlx5_core_dev *dev,
struct devlink_info_req *req,
struct netlink_ext_ack *extack)
{
struct pci_dev *pdev = dev->pdev;
unsigned int vpd_size, kw_len;
char *str, *end;
u8 *vpd_data;
int err = 0;
int start;
vpd_data = pci_vpd_alloc(pdev, &vpd_size);
if (IS_ERR(vpd_data))
return 0;
start = pci_vpd_find_ro_info_keyword(vpd_data, vpd_size,
PCI_VPD_RO_KEYWORD_SERIALNO, &kw_len);
if (start >= 0) {
str = kstrndup(vpd_data + start, kw_len, GFP_KERNEL);
if (!str) {
err = -ENOMEM;
goto end;
}
end = strchrnul(str, ' ');
*end = '\0';
err = devlink_info_board_serial_number_put(req, str);
kfree(str);
if (err)
goto end;
}
start = pci_vpd_find_ro_info_keyword(vpd_data, vpd_size, "V3", &kw_len);
if (start >= 0) {
str = kstrndup(vpd_data + start, kw_len, GFP_KERNEL);
if (!str) {
err = -ENOMEM;
goto end;
}
err = devlink_info_serial_number_put(req, str);
kfree(str);
if (err)
goto end;
}
end:
kfree(vpd_data);
return err;
}
#define DEVLINK_FW_STRING_LEN 32
static int
@ -49,6 +98,10 @@ mlx5_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
if (!mlx5_core_is_pf(dev))
return 0;
err = mlx5_devlink_serial_numbers_put(dev, req, extack);
if (err)
return err;
err = devlink_info_version_fixed_put(req, "fw.psid", dev->board_id);
if (err)
return err;