diff mbox series

[net-next,4/4] net/mlx5: Expose function UID in devlink info

Message ID 20250318153627.95030-5-jiri@resnulli.us (mailing list archive)
State New
Delegated to: Netdev Maintainers
Headers show
Series net/mlx5: Expose additional devlink dev info | expand

Commit Message

Jiri Pirko March 18, 2025, 3:36 p.m. UTC 
From: Jiri Pirko <jiri@nvidia.com>

Devlink info allows to expose function UID.
Get the value from PCI VPD and expose it.

$ devlink dev info
pci/0000:08:00.0:
  driver mlx5_core
  serial_number e4397f872caeed218000846daa7d2f49
  board.serial_number MT2314XZ00YA
  function.uid MT2314XZ00YAMLNXS0D0F0
  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
  function.uid MT2314XZ00YAMLNXS0D0F1
  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>
---
 drivers/net/ethernet/mellanox/mlx5/core/devlink.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
index be0ae26d1582..6caaf174f44d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
@@ -75,6 +75,19 @@  static int mlx5_devlink_serial_numbers_put(struct mlx5_core_dev *dev,
 		kfree(str);
 	}
 
+	start = pci_vpd_find_ro_info_keyword(vpd_data, vpd_size, "VU", &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_function_uid_put(req, str);
+		kfree(str);
+	}
+
 end:
 	kfree(vpd_data);
 	return err;