Re: [ovs-discuss] Cannot link with dpdk

Tue, 29 Mar 2016 05:40:54 -0700

Hi

Thanks for suggestion.
Reinstalling the DPDK with "CONFIG_RTE_BUILD_SHARED_LIB=n" worked.

I am very much curious to know any future impact of setting "CONFIG_RTE_BUILD_SHARED_LIB=n" and why it didn't worked for
CONFIG_RTE_BUILD_SHARED_LIB=Y?

Thanks & Regards
Vivek
From: Bodireddy, Bhanuprakash [bhanuprakash.bodire...@intel.com]
Sent: Tuesday, March 29, 2016 4:34 PM
To: Vivek Gupta
Cc: discuss@openvswitch.org
Subject: RE: [ovs-discuss] Cannot link with dpdk

I don’t see an issue with the steps you mentioned here. Can you try using a static library instead of shared library.

Replace CONFIG_RTE_BUILD_SHARED_LIB=n and reinstall the DPDK library(you should see libdpdk.a) and see if this makes a difference? 

 

Regards,

Bhanu Prakash.

 

From: Vivek Gupta [mailto:vive...@hcl.com]
Sent: Tuesday, March 29, 2016 11:38 AM
To: Bodireddy, Bhanuprakash <bhanuprakash.bodire...@intel.com>
Cc: discuss@openvswitch.org
Subject: RE: [ovs-discuss] Cannot link with dpdk

 

Initially I had tried with with-dpdk= homedirectory/dpdk2.2/install/share/dpdk/x86_64-native-linuxapp-gcc but nothing happened. then switched to
with-dpdk=homedirectory/dpdk2.2/ x86_64-ivshmem-linuxapp-gcc but problem is as it is.

Did I commited any wrong step in DPDK installations? My steps are as below-

  1. untar dpdk-2.2.0.tar.gz
  2. Changed following configuration variable in config/common_linuxapp

1.   CONFIG_RTE_BUILD_COMBINE_LIBS=y

CONFIG_RTE_LIBEAL_USE_HPET=y

CONFIG_RTE_BUILD_SHARED_LIB=y

CONFIG_RTE_RING_SPLIT_PROD_CONS=y

CONFIG_RTE_LIBRTE_PMD_PCAP=y

  1. make config T=x86_64-ivshmem-linuxapp-gcc
  2. make install T=x86_64-ivshmem-linuxapp-gcc DESTDIR=install
  3. export RTE_SDK=‘<homedirectory>/dpdk2.2/install/share/dpdk
  4. Compiled and run "HelloWorld" example.
  5. untar openvswitch-2.5.0.tar.gz
  6. ./boot.sh and start running configuration.

 

Initially I was building DPDK as below steps-

  • make config T=x86_64-ivshmem-linuxapp-gcc
  • make && make install

After make install step I was getting error "Cannot install DPDK with T defined and DESTDIR undefined"

By taking help from forums I changed my "make install" step as "make install x86_64-ivshmem-linuxapp-gcc DESTDIR=install"

 

I am stuck in OVS configuration with DPDK. Please suggest.

 

Thanks & Regards

Vivek

 

 

 

From: Bodireddy, Bhanuprakash [bhanuprakash.bodire...@intel.com]
Sent: Tuesday, March 29, 2016 3:30 PM
To: Vivek Gupta; gowrishankar
Cc: discuss@openvswitch.org
Subject: RE: [ovs-discuss] Cannot link with dpdk

Hello Vivek,

 

I quickly verified the issue you reported and could reproduce it. When one use install target ‘x86_64-ivshmem-linuxapp-gcc’ the directory layout is slightly different.

 

make install T= x86_64-ivshmem-linuxapp-gcc DESTDIR=install creates  ‘<homedirectory>/dpdk2.2/install/share/dpdk/ x86_64-native-linuxapp-gcc`, where as one expects the directory layout to be ‘<homedirectory>/dpdk2.2/install/share/dpdk/ x86_64-ivshmem-linuxapp-gcc`.

 

This is the reason the OVS configure was failing in your case. Try passing –with-dpdk= homedirectory/dpdk2.2/install/share/dpdk/x86_64-native-linuxapp-gcc (or)  --with-dpdk=homedirectory/dpdk2.2/ x86_64-ivshmem-linuxapp-gcc

 

Regards,

Bhanu Prakash.

 

From: discuss [mailto:discuss-boun...@openvswitch.org] On Behalf Of Bodireddy, Bhanuprakash
Sent: Tuesday, March 29, 2016 10:31 AM
To: Vivek Gupta <vive...@hcl.com>; gowrishankar <gowrishanka...@linux.vnet.ibm.com>
Cc: discuss@openvswitch.org
Subject: Re: [ovs-discuss] Cannot link with dpdk

 

Set my path-to-dpdk to homedirectory/dpdk2.2/ x86_64-ivshmem-linuxapp-gcc and this should resolve your issue.

 

Regards,

Bhanu Prakash.

 

From: Vivek Gupta [mailto:vive...@hcl.com]
Sent: Tuesday, March 29, 2016 10:15 AM
To: Bodireddy, Bhanuprakash <bhanuprakash.bodire...@intel.com>; gowrishankar <gowrishanka...@linux.vnet.ibm.com>
Cc: discuss@openvswitch.org
Subject: RE: [ovs-discuss] Cannot link with dpdk

 

Yes, I am able to see libdpdk.so file in path-to-dpdk/x86_64-native-linuxapp-gcc/lib

Please find attached config.log file.

To be mention that I have install DPDK2.2 as below

  1. make config T=x86_64-ivshmem-linuxapp-gcc
  2. make install T= x86_64-ivshmem-linuxapp-gcc DESTDIR=install

my path-to-dpdk = homedirectory/dpdk2.2/install/share/dpdk.

 

Please suggest.

 

Thanks & Regards

Vivek

From: Bodireddy, Bhanuprakash [bhanuprakash.bodire...@intel.com]
Sent: Tuesday, March 29, 2016 1:51 PM
To: Vivek Gupta; gowrishankar
Cc: discuss@openvswitch.org
Subject: RE: [ovs-discuss] Cannot link with dpdk

Do you see DPDK library in the path mentioned path-to-dpdk/x86_64-ivshmem-linuxapp-gcc/lib/libdpdk.a?

 

From: discuss [mailto:discuss-boun...@openvswitch.org] On Behalf Of Vivek Gupta
Sent: Tuesday, March 29, 2016 7:40 AM
To: gowrishankar <gowrishanka...@linux.vnet.ibm.com>
Cc: discuss@openvswitch.org
Subject: Re: [ovs-discuss] Cannot link with dpdk

 

I have already enabled that option.

From: gowrishankar [gowrishanka...@linux.vnet.ibm.com]
Sent: Tuesday, March 29, 2016 11:02 AM
To: Vivek Gupta
Cc: discuss@openvswitch.org
Subject: Re: [ovs-discuss] Cannot link with dpdk

On Monday 28 March 2016 04:25 PM, Vivek Gupta wrote:

Hi


I am trying to configure OVS 2.5 with DPDK 2.2 with following option 

./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var –with-dpdk=path-to-dpdk-/x86_64-ivshmem-linuxapp-gcc/ --enable-ssl
 
but I get error message "configure: error: cannot link with dpdk"
 


You need to have CONFIG_RTE_BUILD_COMBINE_LIBS=y while building dpdk.

Regards,
Gowrishankar

 



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