[PATCH net-next v2 0/4] net/mlx5: Expose additional devlink dev info

[PATCH net-next v2 0/4] net/mlx5: Expose additional devlink dev info

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

This patchset aims to expose couple of already defined serial numbers
for mlx5 driver.

On top of that, it introduces new field, "function.uid" and exposes
that for mlx5 driver.

Example:

$ 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

The first patch just adds a small missing bit in devlink ynl spec.

---
v1->v2:
- patch#2:
  - fixed possibly uninitialized variable "err"

Jiri Pirko (4):
  ynl: devlink: add missing board-serial-number
  net/mlx5: Expose serial numbers in devlink info
  devlink: add function unique identifier to devlink dev info
  net/mlx5: Expose function UID in devlink info

 Documentation/netlink/specs/devlink.yaml      |  5 ++
 .../networking/devlink/devlink-info.rst       |  5 ++
 .../net/ethernet/mellanox/mlx5/core/devlink.c | 62 +++++++++++++++++++
 include/net/devlink.h                         |  2 +
 include/uapi/linux/devlink.h                  |  2 +
 net/devlink/dev.c                             |  9 +++
 6 files changed, 85 insertions(+)

-- 
2.48.1

[PATCH net-next v2 1/4] ynl: devlink: add missing board-serial-number

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

Add a missing attribute of board serial number.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 Documentation/netlink/specs/devlink.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/netlink/specs/devlink.yaml b/Documentation/netlink/specs/devlink.yaml
index 09fbb4c03fc8..bd9726269b4f 100644
--- a/Documentation/netlink/specs/devlink.yaml
+++ b/Documentation/netlink/specs/devlink.yaml
@@ -1868,6 +1868,7 @@ operations:
             - info-version-fixed
             - info-version-running
             - info-version-stored
+            - info-board-serial-number
       dump:
         reply: *info-get-reply
 
-- 
2.48.1

Re: [PATCH net-next v2 1/4] ynl: devlink: add missing board-serial-number

[Simon Horman]

On Thu, Mar 20, 2025 at 09:59:44AM +0100, Jiri Pirko wrote:
> From: Jiri Pirko <jiri@nvidia.com>
> 
> Add a missing attribute of board serial number.
> 
> Signed-off-by: Jiri Pirko <jiri@nvidia.com>

Reviewed-by: Simon Horman <horms@kernel.org>

Re: [PATCH net-next v2 1/4] ynl: devlink: add missing board-serial-number

[Kalesh Anakkur Purayil]

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On Thu, Mar 20, 2025 at 4:02 PM Jiri Pirko <jiri@resnulli.us> wrote:
>
> From: Jiri Pirko <jiri@nvidia.com>
>
> Add a missing attribute of board serial number.
>
> Signed-off-by: Jiri Pirko <jiri@nvidia.com>

Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>


-- 
Regards,
Kalesh AP

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[PATCH net-next v2 2/4] net/mlx5: Expose serial numbers in devlink info

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

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>
---
v1->v2:
- fixed possibly uninitialized variable "err"
---
 .../net/ethernet/mellanox/mlx5/core/devlink.c | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
index 73cd74644378..ebe48f405379 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
@@ -35,6 +35,51 @@ 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);
+	}
+
+	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);
+	}
+
+end:
+	kfree(vpd_data);
+	return err;
+}
+
 #define DEVLINK_FW_STRING_LEN 32
 
 static int
@@ -49,6 +94,10 @@ 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;
-- 
2.48.1

Re: [PATCH net-next v2 2/4] net/mlx5: Expose serial numbers in devlink info

[Simon Horman]

On Thu, Mar 20, 2025 at 09:59:45AM +0100, Jiri Pirko wrote:
> From: Jiri Pirko <jiri@nvidia.com>
> 
> 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>

Re: [PATCH net-next v2 2/4] net/mlx5: Expose serial numbers in devlink info

[Kalesh Anakkur Purayil]

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On Thu, Mar 20, 2025 at 4:02 PM Jiri Pirko <jiri@resnulli.us> wrote:
>
> From: Jiri Pirko <jiri@nvidia.com>
>
> 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: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>


-- 
Regards,
Kalesh AP

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Re: [PATCH net-next v2 2/4] net/mlx5: Expose serial numbers in devlink info

[Jakub Kicinski]

On Thu, 20 Mar 2025 09:59:45 +0100 Jiri Pirko wrote:
> +	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);
> +	}
> +
> +	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);
> +	}

I suppose you only expect one of the fields to be populated but 
the code as is doesn't express that.

Re: [PATCH net-next v2 2/4] net/mlx5: Expose serial numbers in devlink info

[Jiri Pirko]

Tue, Mar 25, 2025 at 12:46:53PM +0100, kuba@kernel.org wrote:
>On Thu, 20 Mar 2025 09:59:45 +0100 Jiri Pirko wrote:
>> +	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);
>> +	}
>> +
>> +	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);
>> +	}
>
>I suppose you only expect one of the fields to be populated but 
>the code as is doesn't express that.

Nope. none or all could be populated, depends on what device exposes.

Re: [PATCH net-next v2 2/4] net/mlx5: Expose serial numbers in devlink info

[Jakub Kicinski]

On Mon, 31 Mar 2025 15:06:18 +0200 Jiri Pirko wrote:
> >I suppose you only expect one of the fields to be populated but 
> >the code as is doesn't express that.  
> 
> Nope. none or all could be populated, depends on what device exposes.

Then you override the err in case first put fails.
But also having two serial numbers makes no sense.

Re: [PATCH net-next v2 2/4] net/mlx5: Expose serial numbers in devlink info

[Jiri Pirko]

Mon, Mar 31, 2025 at 06:22:26PM +0200, kuba@kernel.org wrote:
>On Mon, 31 Mar 2025 15:06:18 +0200 Jiri Pirko wrote:
>> >I suppose you only expect one of the fields to be populated but 
>> >the code as is doesn't express that.  
>> 
>> Nope. none or all could be populated, depends on what device exposes.
>
>Then you override the err in case first put fails.

Correct, will fix.


>But also having two serial numbers makes no sense.

They are serial number for different entity:
  serial_number e4397f872caeed218000846daa7d2f49
  board.serial_number MT2314XZ00YA

Why it does not make sense?

Re: [PATCH net-next v2 2/4] net/mlx5: Expose serial numbers in devlink info

[Jakub Kicinski]

On Tue, 1 Apr 2025 11:01:44 +0200 Jiri Pirko wrote:
> >But also having two serial numbers makes no sense.  
> 
> They are serial number for different entity:
>   serial_number e4397f872caeed218000846daa7d2f49
>   board.serial_number MT2314XZ00YA
> 
> Why it does not make sense?

Missed the exact put helper is different. Makes sense now!

[PATCH net-next v2 3/4] devlink: add function unique identifier to devlink dev info

[Jiri Pirko]

From: Jiri Pirko <jiri@nvidia.com>

Presently, for multi-PF NIC each PF reports the same serial_number and
board.serial_number.

To universally identify a function, add function unique identifier (uid)
to be obtained from the driver as a string of arbitrary length.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
---
 Documentation/netlink/specs/devlink.yaml          | 4 ++++
 Documentation/networking/devlink/devlink-info.rst | 5 +++++
 include/net/devlink.h                             | 2 ++
 include/uapi/linux/devlink.h                      | 2 ++
 net/devlink/dev.c                                 | 9 +++++++++
 5 files changed, 22 insertions(+)

diff --git a/Documentation/netlink/specs/devlink.yaml b/Documentation/netlink/specs/devlink.yaml
index bd9726269b4f..5d39eb68aefb 100644
--- a/Documentation/netlink/specs/devlink.yaml
+++ b/Documentation/netlink/specs/devlink.yaml
@@ -820,6 +820,9 @@ attribute-sets:
       -
         name: region-direct
         type: flag
+      -
+        name: info-function-uid
+        type: string
 
   -
     name: dl-dev-stats
@@ -1869,6 +1872,7 @@ operations:
             - info-version-running
             - info-version-stored
             - info-board-serial-number
+            - info-function-uid
       dump:
         reply: *info-get-reply
 
diff --git a/Documentation/networking/devlink/devlink-info.rst b/Documentation/networking/devlink/devlink-info.rst
index 23073bc219d8..04afceee0c03 100644
--- a/Documentation/networking/devlink/devlink-info.rst
+++ b/Documentation/networking/devlink/devlink-info.rst
@@ -50,6 +50,11 @@ versions is generally discouraged - here, and via any other Linux API.
        This is usually the serial number of the board, often available in
        PCI *Vital Product Data*.
 
+   * - ``function.uid``
+     - Function uniqueue identifier.
+
+       Vendor defined uniqueue identifier of a function.
+
    * - ``fixed``
      - Group for hardware identifiers, and versions of components
        which are not field-updatable.
diff --git a/include/net/devlink.h b/include/net/devlink.h
index b8783126c1ed..a0b84efd4740 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -1846,6 +1846,8 @@ int devlink_info_serial_number_put(struct devlink_info_req *req,
 				   const char *sn);
 int devlink_info_board_serial_number_put(struct devlink_info_req *req,
 					 const char *bsn);
+int devlink_info_function_uid_put(struct devlink_info_req *req,
+				  const char *fuid);
 
 enum devlink_info_version_type {
 	DEVLINK_INFO_VERSION_TYPE_NONE,
diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h
index 9401aa343673..816339790409 100644
--- a/include/uapi/linux/devlink.h
+++ b/include/uapi/linux/devlink.h
@@ -614,6 +614,8 @@ enum devlink_attr {
 
 	DEVLINK_ATTR_REGION_DIRECT,		/* flag */
 
+	DEVLINK_ATTR_INFO_FUNCTION_UID,		/* string */
+
 	/* Add new attributes above here, update the spec in
 	 * Documentation/netlink/specs/devlink.yaml and re-generate
 	 * net/devlink/netlink_gen.c.
diff --git a/net/devlink/dev.c b/net/devlink/dev.c
index d6e3db300acb..6c442549722c 100644
--- a/net/devlink/dev.c
+++ b/net/devlink/dev.c
@@ -763,6 +763,15 @@ int devlink_info_board_serial_number_put(struct devlink_info_req *req,
 }
 EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
 
+int devlink_info_function_uid_put(struct devlink_info_req *req,
+				  const char *fuid)
+{
+	if (!req->msg)
+		return 0;
+	return nla_put_string(req->msg, DEVLINK_ATTR_INFO_FUNCTION_UID, fuid);
+}
+EXPORT_SYMBOL_GPL(devlink_info_function_uid_put);
+
 static int devlink_info_version_put(struct devlink_info_req *req, int attr,
 				    const char *version_name,
 				    const char *version_value,
-- 
2.48.1

Re: [PATCH net-next v2 3/4] devlink: add function unique identifier to devlink dev info

[Simon Horman]

On Thu, Mar 20, 2025 at 09:59:46AM +0100, Jiri Pirko wrote:
> From: Jiri Pirko <jiri@nvidia.com>
> 
> Presently, for multi-PF NIC each PF reports the same serial_number and
> board.serial_number.
> 
> To universally identify a function, add function unique identifier (uid)
> to be obtained from the driver as a string of arbitrary length.
> 
> Signed-off-by: Jiri Pirko <jiri@nvidia.com>
> Reviewed-by: Parav Pandit <parav@nvidia.com>

Reviewed-by: Simon Horman <horms@kernel.org>

Re: [PATCH net-next v2 3/4] devlink: add function unique identifier to devlink dev info

[Kalesh Anakkur Purayil]

[-- Attachment #1: Type: text/plain, Size: 550 bytes --]

On Thu, Mar 20, 2025 at 4:02 PM Jiri Pirko <jiri@resnulli.us> wrote:
>
> From: Jiri Pirko <jiri@nvidia.com>
>
> Presently, for multi-PF NIC each PF reports the same serial_number and
> board.serial_number.
>
> To universally identify a function, add function unique identifier (uid)
> to be obtained from the driver as a string of arbitrary length.
>
> Signed-off-by: Jiri Pirko <jiri@nvidia.com>
> Reviewed-by: Parav Pandit <parav@nvidia.com>

Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>

-- 
Regards,
Kalesh AP

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Re: [PATCH net-next v2 3/4] devlink: add function unique identifier to devlink dev info

[Jakub Kicinski]

On Thu, 20 Mar 2025 09:59:46 +0100 Jiri Pirko wrote:
> From: Jiri Pirko <jiri@nvidia.com>
> 
> Presently, for multi-PF NIC each PF reports the same serial_number and
> board.serial_number.
> 
> To universally identify a function, add function unique identifier (uid)
> to be obtained from the driver as a string of arbitrary length.

We need more explanation for the "why"; this:

+   * - ``function.uid``
+     - Function uniqueue identifier.
+
+       Vendor defined uniqueue identifier of a function.

is really below bar in terms of documentation.

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

[Jiri Pirko]

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 --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

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

[Simon Horman]

On Thu, Mar 20, 2025 at 09:59:47AM +0100, Jiri Pirko wrote:
> 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>

Reviewed-by: Simon Horman <horms@kernel.org>

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

[Kalesh Anakkur Purayil]

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On Thu, Mar 20, 2025 at 4:02 PM Jiri Pirko <jiri@resnulli.us> wrote:
>
> 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>

Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>


-- 
Regards,
Kalesh AP

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Re: [PATCH net-next v2 0/4] net/mlx5: Expose additional devlink dev info

[Tariq Toukan]

On 20/03/2025 10:59, Jiri Pirko wrote:
> From: Jiri Pirko <jiri@nvidia.com>
> 
> This patchset aims to expose couple of already defined serial numbers
> for mlx5 driver.
> 
> On top of that, it introduces new field, "function.uid" and exposes
> that for mlx5 driver.
> 
> Example:
> 
> $ 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
> 
> The first patch just adds a small missing bit in devlink ynl spec.
> 
> ---
> v1->v2:
> - patch#2:
>    - fixed possibly uninitialized variable "err"
> 
> Jiri Pirko (4):
>    ynl: devlink: add missing board-serial-number
>    net/mlx5: Expose serial numbers in devlink info
>    devlink: add function unique identifier to devlink dev info
>    net/mlx5: Expose function UID in devlink info
> 
>   Documentation/netlink/specs/devlink.yaml      |  5 ++
>   .../networking/devlink/devlink-info.rst       |  5 ++
>   .../net/ethernet/mellanox/mlx5/core/devlink.c | 62 +++++++++++++++++++
>   include/net/devlink.h                         |  2 +
>   include/uapi/linux/devlink.h                  |  2 +
>   net/devlink/dev.c                             |  9 +++
>   6 files changed, 85 insertions(+)
> 

For the mlx5 parts:
Acked-by: Tariq Toukan <tariqt@nvidia.com>

Thanks,
Tariq

Re: [PATCH net-next v2 0/4] net/mlx5: Expose additional devlink dev info

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Thu, 20 Mar 2025 09:59:43 +0100 you wrote:
> From: Jiri Pirko <jiri@nvidia.com>
> 
> This patchset aims to expose couple of already defined serial numbers
> for mlx5 driver.
> 
> On top of that, it introduces new field, "function.uid" and exposes
> that for mlx5 driver.
> 
> [...]

Here is the summary with links:
  - [net-next,v2,1/4] ynl: devlink: add missing board-serial-number
    https://git.kernel.org/netdev/net-next/c/3e25c1a7c056
  - [net-next,v2,2/4] net/mlx5: Expose serial numbers in devlink info
    (no matching commit)
  - [net-next,v2,3/4] devlink: add function unique identifier to devlink dev info
    (no matching commit)
  - [net-next,v2,4/4] net/mlx5: Expose function UID in devlink info
    (no matching commit)

You are awesome, thank you!
-- 
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