[dpdk-dev] [PATCH] devbind: check for lspci

[dpdk-dev] [PATCH] devbind: check for lspci

[Anatoly Burakov]

On some distributions (such as CentOS 7) lspci may not be installed
by default, causing exceptions which are difficult to interpret.

Fix devbind script to check if lspci is installed at script startup.

Cc: stable@dpdk.org

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
 usertools/dpdk-devbind.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/usertools/dpdk-devbind.py b/usertools/dpdk-devbind.py
index 7d564634c..74bf514c0 100755
--- a/usertools/dpdk-devbind.py
+++ b/usertools/dpdk-devbind.py
@@ -655,6 +655,13 @@ def do_arg_actions():
 
 def main():
     '''program main function'''
+    # check if lspci is installed, suppress any output
+    with open(os.devnull, 'w') as devnull:
+        ret = subprocess.call(['which', 'lspci'],
+                              stdout=devnull, stderr=devnull)
+        if ret != 0:
+            print("'lspci' not found - please install 'lspci'")
+            sys.exit(1)
     parse_args()
     check_modules()
     clear_data()
-- 
2.17.1

Re: [dpdk-dev] [dpdk-stable] [PATCH] devbind: check for lspci

[Ferruh Yigit]

On 11/7/2018 1:56 PM, Anatoly Burakov wrote:
> On some distributions (such as CentOS 7) lspci may not be installed
> by default, causing exceptions which are difficult to interpret.
> 
> Fix devbind script to check if lspci is installed at script startup.

I guess we need lspci for `--status`, bind/unbind can be done without `lspci`,
what about adding check only display path?

> 
> Cc: stable@dpdk.org
> 
> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
> ---
>  usertools/dpdk-devbind.py | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/usertools/dpdk-devbind.py b/usertools/dpdk-devbind.py
> index 7d564634c..74bf514c0 100755
> --- a/usertools/dpdk-devbind.py
> +++ b/usertools/dpdk-devbind.py
> @@ -655,6 +655,13 @@ def do_arg_actions():
>  
>  def main():
>      '''program main function'''
> +    # check if lspci is installed, suppress any output
> +    with open(os.devnull, 'w') as devnull:
> +        ret = subprocess.call(['which', 'lspci'],
> +                              stdout=devnull, stderr=devnull)
> +        if ret != 0:
> +            print("'lspci' not found - please install 'lspci'")
> +            sys.exit(1)
>      parse_args()
>      check_modules()
>      clear_data()
> 

Re: [dpdk-dev] [dpdk-stable] [PATCH] devbind: check for lspci

[Burakov, Anatoly]

On 07-Nov-18 4:01 PM, Ferruh Yigit wrote:
> On 11/7/2018 1:56 PM, Anatoly Burakov wrote:
>> On some distributions (such as CentOS 7) lspci may not be installed
>> by default, causing exceptions which are difficult to interpret.
>>
>> Fix devbind script to check if lspci is installed at script startup.
> 
> I guess we need lspci for `--status`, bind/unbind can be done without `lspci`,
> what about adding check only display path?

IMO it's not worth respinning over that minor detail, but if you feel 
strongly about it - sure, i can do a v2 with this on display path only :)

> 
>>
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
>> ---
>>   usertools/dpdk-devbind.py | 7 +++++++
>>   1 file changed, 7 insertions(+)
>>
>> diff --git a/usertools/dpdk-devbind.py b/usertools/dpdk-devbind.py
>> index 7d564634c..74bf514c0 100755
>> --- a/usertools/dpdk-devbind.py
>> +++ b/usertools/dpdk-devbind.py
>> @@ -655,6 +655,13 @@ def do_arg_actions():
>>   
>>   def main():
>>       '''program main function'''
>> +    # check if lspci is installed, suppress any output
>> +    with open(os.devnull, 'w') as devnull:
>> +        ret = subprocess.call(['which', 'lspci'],
>> +                              stdout=devnull, stderr=devnull)
>> +        if ret != 0:
>> +            print("'lspci' not found - please install 'lspci'")
>> +            sys.exit(1)
>>       parse_args()
>>       check_modules()
>>       clear_data()
>>
> 
> 


-- 
Thanks,
Anatoly

Re: [dpdk-dev] [dpdk-stable] [PATCH] devbind: check for lspci

[Ferruh Yigit]

On 11/7/2018 4:30 PM, Burakov, Anatoly wrote:
> On 07-Nov-18 4:01 PM, Ferruh Yigit wrote:
>> On 11/7/2018 1:56 PM, Anatoly Burakov wrote:
>>> On some distributions (such as CentOS 7) lspci may not be installed
>>> by default, causing exceptions which are difficult to interpret.
>>>
>>> Fix devbind script to check if lspci is installed at script startup.
>>
>> I guess we need lspci for `--status`, bind/unbind can be done without `lspci`,
>> what about adding check only display path?
> 
> IMO it's not worth respinning over that minor detail, but if you feel 
> strongly about it - sure, i can do a v2 with this on display path only :)

No strong opinion, was just an idea, OK to go as it is if you prefer, not having
lspci installed but still want to use devbind may not be common usecase..

> 
>>
>>>
>>> Cc: stable@dpdk.org
>>>
>>> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
>>> ---
>>>   usertools/dpdk-devbind.py | 7 +++++++
>>>   1 file changed, 7 insertions(+)
>>>
>>> diff --git a/usertools/dpdk-devbind.py b/usertools/dpdk-devbind.py
>>> index 7d564634c..74bf514c0 100755
>>> --- a/usertools/dpdk-devbind.py
>>> +++ b/usertools/dpdk-devbind.py
>>> @@ -655,6 +655,13 @@ def do_arg_actions():
>>>   
>>>   def main():
>>>       '''program main function'''
>>> +    # check if lspci is installed, suppress any output
>>> +    with open(os.devnull, 'w') as devnull:
>>> +        ret = subprocess.call(['which', 'lspci'],
>>> +                              stdout=devnull, stderr=devnull)
>>> +        if ret != 0:
>>> +            print("'lspci' not found - please install 'lspci'")
>>> +            sys.exit(1)
>>>       parse_args()
>>>       check_modules()
>>>       clear_data()
>>>
>>
>>
> 
> 

Re: [dpdk-dev] [dpdk-stable] [PATCH] devbind: check for lspci

[Rami Rosen]

Hi, Anatoly,

This is really minor nitpick, but in case you decide to send V2, I believe
it should say
>> + if ret != 0:
>> +            print("'lspci' not found - please install pciutils')

as the name of the package containing lspci is pciutils in centos.

Regards,
Rami Rosen


>

Re: [dpdk-dev] [dpdk-stable] [PATCH] devbind: check for lspci

[Burakov, Anatoly]

On 08-Nov-18 8:38 PM, Rami Rosen wrote:
> Hi, Anatoly,
> 
> This is really minor nitpick, but in case you decide to send V2, I 
> believe it should say
>  >> + if ret != 0:
>  >> +            print("'lspci' not found - please install pciutils')
> 
> as the name of the package containing lspci is pciutils in centos.

Do all other distros have lspci in package called pciutils? If not, i 
prefer to keep it the way it is.

> 
> Regards,
> Rami Rosen
> 
> 


-- 
Thanks,
Anatoly

Re: [dpdk-dev] [dpdk-stable] [PATCH] devbind: check for lspci

[Rami Rosen]

HI Anatoly,

>Do all other distros have lspci in package called pciutils? If not, i
>prefer to keep it the way it is.

Your original patch have:

+        if ret != 0:
+            print("'lspci' not found - please install 'lspci'")

And I suggest to consider changing it to:

 >> + if ret != 0:
 >> +            print("'lspci' not found - please install pciutils')
>

Sorry about my ignorance: which distro has a package named "lspci", if at all?

The official project that include the lspci utility is called
"pciutils": see: http://mj.ucw.cz/sw/pciutils/
You can see that a package named "pciutils" is available in great many
distros, like:
Fedora, OpenSuSE, CentOS, RHEL, Ubuntu, Debian, Mandriva and Mageia,
according to the following links:

http://www.rpmfind.net/linux/rpm2html/search.php?query=pciutils&submit=Search+...
https://packages.ubuntu.com/trusty/pciutils
https://packages.debian.org/search?keywords=pciutils
https://rpms.remirepo.net/rpmphp/zoom.php?rpm=pciutils

Regards,
Rami Rosen

Re: [dpdk-dev] [dpdk-stable] [PATCH] devbind: check for lspci

[Burakov, Anatoly]

On 10-Nov-18 11:03 AM, Rami Rosen wrote:
> HI Anatoly,
> 
>> Do all other distros have lspci in package called pciutils? If not, i
>> prefer to keep it the way it is.
> 
> Your original patch have:
> 
> +        if ret != 0:
> +            print("'lspci' not found - please install 'lspci'")
> 
> And I suggest to consider changing it to:
> 
>   >> + if ret != 0:
>   >> +            print("'lspci' not found - please install pciutils')
>>
> 
> Sorry about my ignorance: which distro has a package named "lspci", if at all?
> 
> The official project that include the lspci utility is called
> "pciutils": see: http://mj.ucw.cz/sw/pciutils/
> You can see that a package named "pciutils" is available in great many
> distros, like:
> Fedora, OpenSuSE, CentOS, RHEL, Ubuntu, Debian, Mandriva and Mageia,
> according to the following links:
> 
> http://www.rpmfind.net/linux/rpm2html/search.php?query=pciutils&submit=Search+...
> https://packages.ubuntu.com/trusty/pciutils
> https://packages.debian.org/search?keywords=pciutils
> https://rpms.remirepo.net/rpmphp/zoom.php?rpm=pciutils
> 
> Regards,
> Rami Rosen
> 

Hi,

Thanks, that's good to know, will fix in v2.

-- 
Thanks,
Anatoly

Re: [dpdk-dev] [dpdk-stable] [PATCH] devbind: check for lspci

[Burakov, Anatoly]

On 07-Nov-18 4:01 PM, Ferruh Yigit wrote:
> On 11/7/2018 1:56 PM, Anatoly Burakov wrote:
>> On some distributions (such as CentOS 7) lspci may not be installed
>> by default, causing exceptions which are difficult to interpret.
>>
>> Fix devbind script to check if lspci is installed at script startup.
> 
> I guess we need lspci for `--status`, bind/unbind can be done without `lspci`,
> what about adding check only display path?

This is actually incorrect. While we *use* the lspci output only on 
display paths, we actually gather info about devices using lspci in 
get_device_details(). So, i'll leave the code as is and just fix the 
package name for v2.

-- 
Thanks,
Anatoly

[dpdk-dev] [PATCH v2] devbind: check for lspci

[Anatoly Burakov]

On some distributions (such as CentOS 7) lspci may not be installed
by default, causing exceptions which are difficult to interpret.

Fix devbind script to check if lspci is installed at script startup.

Cc: stable@dpdk.org

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---

Notes:
    v2: correct package name to "pciutils"

 usertools/dpdk-devbind.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/usertools/dpdk-devbind.py b/usertools/dpdk-devbind.py
index 7d564634c..40dc28a7d 100755
--- a/usertools/dpdk-devbind.py
+++ b/usertools/dpdk-devbind.py
@@ -655,6 +655,13 @@ def do_arg_actions():
 
 def main():
     '''program main function'''
+    # check if lspci is installed, suppress any output
+    with open(os.devnull, 'w') as devnull:
+        ret = subprocess.call(['which', 'lspci'],
+                              stdout=devnull, stderr=devnull)
+        if ret != 0:
+            print("'lspci' not found - please install 'pciutils'")
+            sys.exit(1)
     parse_args()
     check_modules()
     clear_data()
-- 
2.17.1

Re: [dpdk-dev] [PATCH v2] devbind: check for lspci

[Rami Rosen]

Reviewed-by: Rami Rosen <roszenrami@gmail.com>
On Tue, 13 Nov 2018 at 18:06, Anatoly Burakov <anatoly.burakov@intel.com> wrote:
>
> On some distributions (such as CentOS 7) lspci may not be installed
> by default, causing exceptions which are difficult to interpret.
>
> Fix devbind script to check if lspci is installed at script startup.
>
> Cc: stable@dpdk.org
>
> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
> ---
>
> Notes:
>     v2: correct package name to "pciutils"
>
>  usertools/dpdk-devbind.py | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/usertools/dpdk-devbind.py b/usertools/dpdk-devbind.py
> index 7d564634c..40dc28a7d 100755
> --- a/usertools/dpdk-devbind.py
> +++ b/usertools/dpdk-devbind.py
> @@ -655,6 +655,13 @@ def do_arg_actions():
>
>  def main():
>      '''program main function'''
> +    # check if lspci is installed, suppress any output
> +    with open(os.devnull, 'w') as devnull:
> +        ret = subprocess.call(['which', 'lspci'],
> +                              stdout=devnull, stderr=devnull)
> +        if ret != 0:
> +            print("'lspci' not found - please install 'pciutils'")
> +            sys.exit(1)
>      parse_args()
>      check_modules()
>      clear_data()
> --
> 2.17.1

Re: [dpdk-dev] [PATCH v2] devbind: check for lspci

[Thomas Monjalon]

16/11/2018 17:54, Rami Rosen:
> On Tue, 13 Nov 2018 at 18:06, Anatoly Burakov <anatoly.burakov@intel.com> wrote:
> >
> > On some distributions (such as CentOS 7) lspci may not be installed
> > by default, causing exceptions which are difficult to interpret.
> >
> > Fix devbind script to check if lspci is installed at script startup.
> >
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
> Reviewed-by: Rami Rosen <roszenrami@gmail.com>

Applied, thanks