netdev - [PATCH net-next v2 4/4] net/mlx5: Expose function UID in devlink info

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250320085947.103419-5-jiri@resnulli.us>
Date: Thu, 20 Mar 2025 09:59:47 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	saeedm@...dia.com,
	leon@...nel.org,
	tariqt@...dia.com,
	andrew+netdev@...n.ch,
	horms@...nel.org,
	donald.hunter@...il.com,
	parav@...dia.com
Subject: [PATCH net-next v2 4/4] net/mlx5: Expose function UID in devlink info

From: Jiri Pirko <jiri@...dia.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@...dia.com>
Reviewed-by: Parav Pandit <parav@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/devlink.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
index ebe48f405379..97bde76af399 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;
-- 
2.48.1