Re: [SPDK] DPDK

Re: [SPDK] DPDK

[Daniel Verkamp]

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On 11/02/2016 04:47 AM, Kumaraparameshwaran Rathnavel wrote:
> Hi All,
>
> I am writing an application similar to nvmf target in SPDK. I should not use the Makefile format given for nvmf target. I am having my own cmake file and I have included libraries and header files from DPDK and SPDK. My application core dumps at rte_mempool_create. When I use the same code and the format of the Makefile in nvmf target it doesn't. I can see that I am missing some flags r something. Can any one help me? Is there an implementation of Makefiles of nvmf target in SPDK with cmake
>
> Thanking you,
> Param

Hi Param,

We would have to see a backtrace to be sure, but it is likely that your 
build system is not linking the DPDK libraries correctly.  If you are 
using DPDK 16.07 or newer built as static libraries, you need to link 
the rte_* libraries with the -Wl,--whole-archive linker option to ensure 
none of the object files that contain only constructors get eliminated. 
Some of the mempool functionality was made pluggable and moved to 
initialization in constructors in DPDK 16.07, and if you fail to link 
the libraries this way, you will end up with NULL function pointers. 
Alternatively, you can just use a shared library build of DPDK.

See commit 20c11032aecc9678b415dc1861607d5f46ec34ef in SPDK for how this 
issue was fixed in our Makefile build system.

Thanks,
-- Daniel

Re: [SPDK] DPDK

[Alex Bowden]

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I highly suggest doing some reading of DPDK's build configuration files. Here is a pointer:

CONFIG_RTE_BUILD_SHARED_LIB=y

-Alex

On Wed, Nov 2, 2016 at 12:44 PM, Kumaraparameshwaran Rathnavel <krath(a)cloudsimple.com<mailto:krath(a)cloudsimple.com>> wrote:
How do I get shared library of DPDK .

Thanking you,
Param

Sent from my iPhone

> On 02-Nov-2016, at 9:48 PM, Daniel Verkamp <daniel.verkamp(a)intel.com<mailto:daniel.verkamp(a)intel.com>> wrote:
>
>> On 11/02/2016 04:47 AM, Kumaraparameshwaran Rathnavel wrote:
>> Hi All,
>>
>> I am writing an application similar to nvmf target in SPDK. I should not use the Makefile format given for nvmf target. I am having my own cmake file and I have included libraries and header files from DPDK and SPDK. My application core dumps at rte_mempool_create. When I use the same code and the format of the Makefile in nvmf target it doesn't. I can see that I am missing some flags r something. Can any one help me? Is there an implementation of Makefiles of nvmf target in SPDK with cmake
>>
>> Thanking you,
>> Param
>
> Hi Param,
>
> We would have to see a backtrace to be sure, but it is likely that your build system is not linking the DPDK libraries correctly.  If you are using DPDK 16.07 or newer built as static libraries, you need to link the rte_* libraries with the -Wl,--whole-archive linker option to ensure none of the object files that contain only constructors get eliminated. Some of the mempool functionality was made pluggable and moved to initialization in constructors in DPDK 16.07, and if you fail to link the libraries this way, you will end up with NULL function pointers. Alternatively, you can just use a shared library build of DPDK.
>
> See commit 20c11032aecc9678b415dc1861607d5f46ec34ef in SPDK for how this issue was fixed in our Makefile build system.
>
> Thanks,
> -- Daniel
>
> _______________________________________________
> SPDK mailing list
> SPDK(a)lists.01.org<mailto:SPDK(a)lists.01.org>
> https://lists.01.org/mailman/listinfo/spdk
_______________________________________________
SPDK mailing list
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Re: [SPDK] DPDK

[Kumaraparameshwaran Rathnavel]

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How do I get shared library of DPDK . 

Thanking you,
Param

Sent from my iPhone

> On 02-Nov-2016, at 9:48 PM, Daniel Verkamp <daniel.verkamp(a)intel.com> wrote:
> 
>> On 11/02/2016 04:47 AM, Kumaraparameshwaran Rathnavel wrote:
>> Hi All,
>> 
>> I am writing an application similar to nvmf target in SPDK. I should not use the Makefile format given for nvmf target. I am having my own cmake file and I have included libraries and header files from DPDK and SPDK. My application core dumps at rte_mempool_create. When I use the same code and the format of the Makefile in nvmf target it doesn't. I can see that I am missing some flags r something. Can any one help me? Is there an implementation of Makefiles of nvmf target in SPDK with cmake
>> 
>> Thanking you,
>> Param
> 
> Hi Param,
> 
> We would have to see a backtrace to be sure, but it is likely that your build system is not linking the DPDK libraries correctly.  If you are using DPDK 16.07 or newer built as static libraries, you need to link the rte_* libraries with the -Wl,--whole-archive linker option to ensure none of the object files that contain only constructors get eliminated. Some of the mempool functionality was made pluggable and moved to initialization in constructors in DPDK 16.07, and if you fail to link the libraries this way, you will end up with NULL function pointers. Alternatively, you can just use a shared library build of DPDK.
> 
> See commit 20c11032aecc9678b415dc1861607d5f46ec34ef in SPDK for how this issue was fixed in our Makefile build system.
> 
> Thanks,
> -- Daniel
> 
> _______________________________________________
> SPDK mailing list
> SPDK(a)lists.01.org
> https://lists.01.org/mailman/listinfo/spdk

Re: [SPDK] DPDK

[Kumaraparameshwaran Rathnavel]

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Thanks for the Reply Daniel. 

Thanking You, 
Param

Sent from my iPhone

> On 02-Nov-2016, at 9:48 PM, Daniel Verkamp <daniel.verkamp(a)intel.com> wrote:
> 
>> On 11/02/2016 04:47 AM, Kumaraparameshwaran Rathnavel wrote:
>> Hi All,
>> 
>> I am writing an application similar to nvmf target in SPDK. I should not use the Makefile format given for nvmf target. I am having my own cmake file and I have included libraries and header files from DPDK and SPDK. My application core dumps at rte_mempool_create. When I use the same code and the format of the Makefile in nvmf target it doesn't. I can see that I am missing some flags r something. Can any one help me? Is there an implementation of Makefiles of nvmf target in SPDK with cmake
>> 
>> Thanking you,
>> Param
> 
> Hi Param,
> 
> We would have to see a backtrace to be sure, but it is likely that your build system is not linking the DPDK libraries correctly.  If you are using DPDK 16.07 or newer built as static libraries, you need to link the rte_* libraries with the -Wl,--whole-archive linker option to ensure none of the object files that contain only constructors get eliminated. Some of the mempool functionality was made pluggable and moved to initialization in constructors in DPDK 16.07, and if you fail to link the libraries this way, you will end up with NULL function pointers. Alternatively, you can just use a shared library build of DPDK.
> 
> See commit 20c11032aecc9678b415dc1861607d5f46ec34ef in SPDK for how this issue was fixed in our Makefile build system.
> 
> Thanks,
> -- Daniel
> 
> _______________________________________________
> SPDK mailing list
> SPDK(a)lists.01.org
> https://lists.01.org/mailman/listinfo/spdk

[SPDK] DPDK

[Kumaraparameshwaran Rathnavel]

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Hi All,

I am writing an application similar to nvmf target in SPDK. I should not use the Makefile format given for nvmf target. I am having my own cmake file and I have included libraries and header files from DPDK and SPDK. My application core dumps at rte_mempool_create. When I use the same code and the format of the Makefile in nvmf target it doesn't. I can see that I am missing some flags r something. Can any one help me? Is there an implementation of Makefiles of nvmf target in SPDK with cmake 

Thanking you,
Param