[Intel-wired-lan] [PATCH] i40e: Fix i40e_print_features() VEB mode output

[Intel-wired-lan] [PATCH] i40e: Fix i40e_print_features() VEB mode output

[Joe Perches]

Commit 7fd89545f337 ("i40e: remove BUG_ON from feature string building")
added defective output when I40E_FLAG_VEB_MODE_ENABLED was set in
function i40e_print_features.

Fix it.

Miscellanea:

o Remove unnecessary string variable
o Add space before not after fixed strings
o Use kmalloc not kzalloc
o Don't initialize i to 0, use result of first snprintf

Noticed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Joe Perches <joe@perches.com>
---
?drivers/net/ethernet/intel/i40e/i40e_main.c | 42 +++++++++++++----------------
?1 file changed, 19 insertions(+), 23 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 4b7d874..145eeb5 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -10240,52 +10240,48 @@ static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
?static void i40e_print_features(struct i40e_pf *pf)
?{
?	struct i40e_hw *hw = &pf->hw;
-	char *buf, *string;
-	int i = 0;
+	char *buf;
+	int i;
?
-	string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
-	if (!string) {
-		dev_err(&pf->pdev->dev, "Features string allocation failed\n");
+	buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
+	if (!buf)
?		return;
-	}
-
-	buf = string;
?
-	i += snprintf(&buf[i], REMAIN(i), "Features: PF-id[%d] ", hw->pf_id);
+	i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
?#ifdef CONFIG_PCI_IOV
-	i += snprintf(&buf[i], REMAIN(i), "VFs: %d ", pf->num_req_vfs);
+	i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
?#endif
-	i += snprintf(&buf[i], REMAIN(i), "VSIs: %d QP: %d RX: %s ",
+	i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d RX: %s",
?		??????pf->hw.func_caps.num_vsis,
?		??????pf->vsi[pf->lan_vsi]->num_queue_pairs,
?		??????pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
?
?	if (pf->flags & I40E_FLAG_RSS_ENABLED)
-		i += snprintf(&buf[i], REMAIN(i), "RSS ");
+		i += snprintf(&buf[i], REMAIN(i), " RSS");
?	if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
-		i += snprintf(&buf[i], REMAIN(i), "FD_ATR ");
+		i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
?	if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
-		i += snprintf(&buf[i], REMAIN(i), "FD_SB ");
-		i += snprintf(&buf[i], REMAIN(i), "NTUPLE ");
+		i += snprintf(&buf[i], REMAIN(i), " FD_SB");
+		i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
?	}
?	if (pf->flags & I40E_FLAG_DCB_CAPABLE)
-		i += snprintf(&buf[i], REMAIN(i), "DCB ");
+		i += snprintf(&buf[i], REMAIN(i), " DCB");
?#if IS_ENABLED(CONFIG_VXLAN)
-	i += snprintf(&buf[i], REMAIN(i), "VxLAN ");
+	i += snprintf(&buf[i], REMAIN(i), " VxLAN");
?#endif
?	if (pf->flags & I40E_FLAG_PTP)
-		i += snprintf(&buf[i], REMAIN(i), "PTP ");
+		i += snprintf(&buf[i], REMAIN(i), " PTP");
?#ifdef I40E_FCOE
?	if (pf->flags & I40E_FLAG_FCOE_ENABLED)
-		i += snprintf(&buf[i], REMAIN(i), "FCOE ");
+		i += snprintf(&buf[i], REMAIN(i), " FCOE");
?#endif
?	if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
-		i += snprintf(&buf[i], REMAIN(i), "VEPA ");
+		i += snprintf(&buf[i], REMAIN(i), " VEB");
?	else
-		buf += sprintf(buf, "VEPA ");
+		i += snprintf(&buf[i], REMAIN(i), " VEPA");
?
-	dev_info(&pf->pdev->dev, "%s\n", string);
-	kfree(string);
+	dev_info(&pf->pdev->dev, "%s\n", buf);
+	kfree(buf);
?	WARN_ON(i > INFO_STRING_LEN);
?}
?

[Intel-wired-lan] [PATCH] i40e: Fix i40e_print_features() VEB mode output

[Jeff Kirsher]

On Wed, 2015-12-02 at 00:38 -0800, Joe Perches wrote:
> Commit 7fd89545f337 ("i40e: remove BUG_ON from feature string
> building")
> added defective output when I40E_FLAG_VEB_MODE_ENABLED was set in
> function i40e_print_features.
> 
> Fix it.
> 
> Miscellanea:
> 
> o Remove unnecessary string variable
> o Add space before not after fixed strings
> o Use kmalloc not kzalloc
> o Don't initialize i to 0, use result of first snprintf
> 
> Noticed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

Don't you mean Reported-by? ?I am not aware of Noticed-by as being a
recognized signature.

> Signed-off-by: Joe Perches <joe@perches.com>
> ---
> ?drivers/net/ethernet/intel/i40e/i40e_main.c | 42 +++++++++++++----
> ------------
> ?1 file changed, 19 insertions(+), 23 deletions(-)
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[Intel-wired-lan] [PATCH] i40e: Fix i40e_print_features() VEB mode output

[Joe Perches]

On Wed, 2015-12-02 at 01:56 -0800, Jeff Kirsher wrote:
> On Wed, 2015-12-02 at 00:38 -0800, Joe Perches wrote:
> > Commit 7fd89545f337 ("i40e: remove BUG_ON from feature string
> > building")
> > added defective output when I40E_FLAG_VEB_MODE_ENABLED was set in
> > function i40e_print_features.
> > 
> > Fix it.
> > 
> > Miscellanea:
> > 
> > o Remove unnecessary string variable
> > o Add space before not after fixed strings
> > o Use kmalloc not kzalloc
> > o Don't initialize i to 0, use result of first snprintf
> > 
> > Noticed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
> 
> Don't you mean Reported-by? ?I am not aware of Noticed-by as being a
> recognized signature.

At least for the get_maintainer script, "<anything>-by:" is a signature

[Intel-wired-lan] [PATCH] i40e: Fix i40e_print_features() VEB mode output

[David Miller]

From: Joe Perches <joe@perches.com>
Date: Wed, 02 Dec 2015 02:12:29 -0800

> On Wed, 2015-12-02 at 01:56 -0800, Jeff Kirsher wrote:
>> On Wed, 2015-12-02 at 00:38 -0800, Joe Perches wrote:
>> > Commit 7fd89545f337 ("i40e: remove BUG_ON from feature string
>> > building")
>> > added defective output when I40E_FLAG_VEB_MODE_ENABLED was set in
>> > function i40e_print_features.
>> > 
>> > Fix it.
>> > 
>> > Miscellanea:
>> > 
>> > o Remove unnecessary string variable
>> > o Add space before not after fixed strings
>> > o Use kmalloc not kzalloc
>> > o Don't initialize i to 0, use result of first snprintf
>> > 
>> > Noticed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
>> 
>> Don't you mean Reported-by? ?I am not aware of Noticed-by as being a
>> recognized signature.
> 
> At least for the get_maintainer script, "<anything>-by:" is a signature

Is patchwork using the same regexp?  If not, for the time being don't
user non-standard tags, and furthermore please ask the patchwork folks
to use something similar to getmaintainer.pl

Thanks.

[Intel-wired-lan] [PATCH] i40e: Fix i40e_print_features() VEB mode output

[Joe Perches]

On Wed, 2015-12-02 at 15:48 -0500, David Miller wrote:
> From: Joe Perches <joe@perches.com> 02 Dec 2015 02:12:29 -0800
> > On Wed, 2015-12-02 at 01:56 -0800, Jeff Kirsher wrote:
> >> On Wed, 2015-12-02 at 00:38 -0800, Joe Perches wrote:
> >> > Noticed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>?
> >> Don't you mean Reported-by? ?I am not aware of Noticed-by as being a
> >> recognized signature.?
> > At least for the get_maintainer script, "-by:" is a signature
> Is patchwork using the same regexp?? If not, for the time being don't
> user non-standard tags, and furthermore please ask the patchwork folks
> to use something similar to getmaintainer.pl

It doesn't seem so.

????response_re = re.compile(
????????r'^(Tested|Reviewed|Acked|Signed-off|Nacked|Reported)-by: .*$',
????????re.M | re.I)

patchwork also doesn't seem very forgiving of misformatted signatures.
(btw: Junio Hamano seems to prefer calling them trailers)

And patchwork doesn't seem to handle "cc: " markers either.

[Intel-wired-lan] [PATCH] i40e: Fix i40e_print_features() VEB mode output

[Jeff Kirsher]

On Wed, 2015-12-02 at 00:38 -0800, Joe Perches wrote:
> Commit 7fd89545f337 ("i40e: remove BUG_ON from feature string
> building")
> added defective output when I40E_FLAG_VEB_MODE_ENABLED was set in
> function i40e_print_features.
> 
> Fix it.
> 
> Miscellanea:
> 
> o Remove unnecessary string variable
> o Add space before not after fixed strings
> o Use kmalloc not kzalloc
> o Don't initialize i to 0, use result of first snprintf
> 
> Noticed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
> ?drivers/net/ethernet/intel/i40e/i40e_main.c | 42 +++++++++++++----
> ------------
> ?1 file changed, 19 insertions(+), 23 deletions(-)

Your patch does not apply cleanly, it appears you used Dave's net-next
tree to generate your patch, versus my next-queue tree (dev-queue
branch) which has a number of i40e patches already applied.

As a one-time only reminder, I have gone ahead and applied your patch
by hand. ?I will send your updated patch out here in just a minute.
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