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Thu, 20 Mar 2025 03:31:55 -0700 (PDT) Received: from localhost ([193.47.165.251]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3997e3eb672sm207006f8f.95.2025.03.20.03.31.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Mar 2025 03:31:55 -0700 (PDT) From: Jiri Pirko To: netdev@vger.kernel.org Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, saeedm@nvidia.com, leon@kernel.org, tariqt@nvidia.com, andrew+netdev@lunn.ch, horms@kernel.org, donald.hunter@gmail.com, parav@nvidia.com Subject: [PATCH net-next v2 4/4] net/mlx5: Expose function UID in devlink info Date: Thu, 20 Mar 2025 09:59:47 +0100 Message-ID: <20250320085947.103419-5-jiri@resnulli.us> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250320085947.103419-1-jiri@resnulli.us> References: <20250320085947.103419-1-jiri@resnulli.us> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Jiri Pirko 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 Reviewed-by: Parav Pandit --- 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;