[PATCH, net] ibmvnic: fix firmware version when no firmware level has been provided by the VIOS server

Subsystems: ibm power sriov virtual nic device driver, linux for powerpc (32-bit and 64-bit), networking drivers, the rest

6 messages, 3 authors, 2018-02-02 · open the first message on its own page

[PATCH, net] ibmvnic: fix firmware version when no firmware level has been provided by the VIOS server

From: Desnes Augusto Nunes do Rosario <hidden>
Date: 2018-02-01 18:05:37

Older versions of VIOS servers do not send the firmware level in the VPD
buffer for the ibmvnic driver. Thus, not only the current message is mis-
leading but the firmware version in the ethtool will be NULL. Therefore,
this patch fixes the firmware string and its warning.

Fixes: 4e6759be28e4 ("ibmvnic: Feature implementation of VPD for the ibmvnic driver")

Signed-off-by: Desnes A. Nunes do Rosario <redacted>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index b65f5f3ac034..2b3e71b63a7a 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -3290,7 +3290,11 @@ static void handle_vpd_rsp(union ibmvnic_crq *crq,
 	 */
 	substr = strnstr(adapter->vpd->buff, "RM", adapter->vpd->len);
 	if (!substr) {
-		dev_info(dev, "No FW level provided by VPD\n");
+		dev_info(dev, "Warning - No FW level has been provided in the VPD buffer by the VIOS Server\n");
+		ptr = strncpy((char *)adapter->fw_version, "N/A",
+			      3 * sizeof(char));
+		if (!ptr)
+			dev_err(dev, "Failed to inform that firmware version is unavailable to the adapter\n");
 		goto complete;
 	}
 
-- 
2.14.3

Re: [PATCH, net] ibmvnic: fix firmware version when no firmware level has been provided by the VIOS server

From: David Miller <davem@davemloft.net>
Date: 2018-02-01 19:59:42

From: Desnes Augusto Nunes do Rosario <redacted>
Date: Thu,  1 Feb 2018 16:04:30 -0200
Older versions of VIOS servers do not send the firmware level in the VPD
buffer for the ibmvnic driver. Thus, not only the current message is mis-
leading but the firmware version in the ethtool will be NULL. Therefore,
this patch fixes the firmware string and its warning.

Fixes: 4e6759be28e4 ("ibmvnic: Feature implementation of VPD for the ibmvnic driver")

Signed-off-by: Desnes A. Nunes do Rosario <redacted>
Applied.

Please do not put empty lines between Fixes: and Signed-off-by: and other
tags, all tags are equal and are placed together in an uninterrupted
sequences of consequetive lines.

Thank you.

Re: [PATCH, net] ibmvnic: fix firmware version when no firmware level has been provided by the VIOS server

From: Tyrel Datwyler <hidden>
Date: 2018-02-01 21:02:48

On 02/01/2018 10:04 AM, Desnes Augusto Nunes do Rosario wrote:
quoted hunk
Older versions of VIOS servers do not send the firmware level in the VPD
buffer for the ibmvnic driver. Thus, not only the current message is mis-
leading but the firmware version in the ethtool will be NULL. Therefore,
this patch fixes the firmware string and its warning.

Fixes: 4e6759be28e4 ("ibmvnic: Feature implementation of VPD for the ibmvnic driver")

Signed-off-by: Desnes A. Nunes do Rosario <redacted>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index b65f5f3ac034..2b3e71b63a7a 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -3290,7 +3290,11 @@ static void handle_vpd_rsp(union ibmvnic_crq *crq,
 	 */
 	substr = strnstr(adapter->vpd->buff, "RM", adapter->vpd->len);
 	if (!substr) {
-		dev_info(dev, "No FW level provided by VPD\n");
+		dev_info(dev, "Warning - No FW level has been provided in the VPD buffer by the VIOS Server\n");
+		ptr = strncpy((char *)adapter->fw_version, "N/A",
Is "N/A" the right thing to report? Would something like "Unknown" or "Unreported" be better?
+			      3 * sizeof(char));
+		if (!ptr)
+			dev_err(dev, "Failed to inform that firmware version is unavailable to the adapter\n");
The sentence structure here seems awkward. I would probably just get rid of this error and this one later in the function.

	dev_err(dev, "Failed to isolate FW level string\n");

Instead just check and report if adapter->fw_version == NULL in the complete: label section.

-Tyrel
 		goto complete;
 	}

Re: [PATCH, net] ibmvnic: fix firmware version when no firmware level has been provided by the VIOS server

From: Desnes Augusto Nunes do Rosário <hidden>
Date: 2018-02-02 14:34:34

Hello David,

Thank you for your review and the heads up about protocol.

On 02/01/2018 05:59 PM, David Miller wrote:
From: Desnes Augusto Nunes do Rosario <redacted>
Date: Thu,  1 Feb 2018 16:04:30 -0200
quoted
Older versions of VIOS servers do not send the firmware level in the VPD
buffer for the ibmvnic driver. Thus, not only the current message is mis-
leading but the firmware version in the ethtool will be NULL. Therefore,
this patch fixes the firmware string and its warning.

Fixes: 4e6759be28e4 ("ibmvnic: Feature implementation of VPD for the ibmvnic driver")

Signed-off-by: Desnes A. Nunes do Rosario <redacted>
Applied.

Please do not put empty lines between Fixes: and Signed-off-by: and other
tags, all tags are equal and are placed together in an uninterrupted
sequences of consequetive lines.

Thank you.
-- 
Desnes Augusto Nunes do Rosário
------------------------------------------

Linux Developer - IBM / Brazil
M.Sc. in Electrical and Computer Engineering - UFRN

Re: [PATCH, net] ibmvnic: fix firmware version when no firmware level has been provided by the VIOS server

From: Desnes Augusto Nunes do Rosário <hidden>
Date: 2018-02-02 14:37:54

Hello Tyrel,

I concur with your observations, but since this patch has already been 
merged, I'll address them in another patch.

Thank you for your review,

On 02/01/2018 07:02 PM, Tyrel Datwyler wrote:
On 02/01/2018 10:04 AM, Desnes Augusto Nunes do Rosario wrote:
quoted
Older versions of VIOS servers do not send the firmware level in the VPD
buffer for the ibmvnic driver. Thus, not only the current message is mis-
leading but the firmware version in the ethtool will be NULL. Therefore,
this patch fixes the firmware string and its warning.

Fixes: 4e6759be28e4 ("ibmvnic: Feature implementation of VPD for the ibmvnic driver")

Signed-off-by: Desnes A. Nunes do Rosario <redacted>
---
  drivers/net/ethernet/ibm/ibmvnic.c | 6 +++++-
  1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index b65f5f3ac034..2b3e71b63a7a 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -3290,7 +3290,11 @@ static void handle_vpd_rsp(union ibmvnic_crq *crq,
  	 */
  	substr = strnstr(adapter->vpd->buff, "RM", adapter->vpd->len);
  	if (!substr) {
-		dev_info(dev, "No FW level provided by VPD\n");
+		dev_info(dev, "Warning - No FW level has been provided in the VPD buffer by the VIOS Server\n");
+		ptr = strncpy((char *)adapter->fw_version, "N/A",
Is "N/A" the right thing to report? Would something like "Unknown" or "Unreported" be better?
quoted
+			      3 * sizeof(char));
+		if (!ptr)
+			dev_err(dev, "Failed to inform that firmware version is unavailable to the adapter\n");
The sentence structure here seems awkward. I would probably just get rid of this error and this one later in the function.

	dev_err(dev, "Failed to isolate FW level string\n");

Instead just check and report if adapter->fw_version == NULL in the complete: label section.

-Tyrel
quoted
  		goto complete;
  	}
-- 
Desnes Augusto Nunes do Rosário
------------------------------------------

Linux Developer - IBM / Brazil
M.Sc. in Electrical and Computer Engineering - UFRN

Re: [PATCH, net] ibmvnic: fix firmware version when no firmware level has been provided by the VIOS server

From: Tyrel Datwyler <hidden>
Date: 2018-02-02 17:55:57

On 02/02/2018 06:37 AM, Desnes Augusto Nunes do Rosário wrote:
Hello Tyrel,

I concur with your observations, but since this patch has already been merged, I'll address them in another patch.
Fair enough. I didn't realize David had already merged it till after I sent my review.

-Tyrel
Thank you for your review,

On 02/01/2018 07:02 PM, Tyrel Datwyler wrote:
quoted
On 02/01/2018 10:04 AM, Desnes Augusto Nunes do Rosario wrote:
quoted
Older versions of VIOS servers do not send the firmware level in the VPD
buffer for the ibmvnic driver. Thus, not only the current message is mis-
leading but the firmware version in the ethtool will be NULL. Therefore,
this patch fixes the firmware string and its warning.

Fixes: 4e6759be28e4 ("ibmvnic: Feature implementation of VPD for the ibmvnic driver")

Signed-off-by: Desnes A. Nunes do Rosario <redacted>
---
  drivers/net/ethernet/ibm/ibmvnic.c | 6 +++++-
  1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index b65f5f3ac034..2b3e71b63a7a 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -3290,7 +3290,11 @@ static void handle_vpd_rsp(union ibmvnic_crq *crq,
       */
      substr = strnstr(adapter->vpd->buff, "RM", adapter->vpd->len);
      if (!substr) {
-        dev_info(dev, "No FW level provided by VPD\n");
+        dev_info(dev, "Warning - No FW level has been provided in the VPD buffer by the VIOS Server\n");
+        ptr = strncpy((char *)adapter->fw_version, "N/A",
Is "N/A" the right thing to report? Would something like "Unknown" or "Unreported" be better?
quoted
+                  3 * sizeof(char));
+        if (!ptr)
+            dev_err(dev, "Failed to inform that firmware version is unavailable to the adapter\n");
The sentence structure here seems awkward. I would probably just get rid of this error and this one later in the function.

    dev_err(dev, "Failed to isolate FW level string\n");

Instead just check and report if adapter->fw_version == NULL in the complete: label section.

-Tyrel
quoted
          goto complete;
      }
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