Re: [dpdk-users] dpdk 2.2.0 build failure on Rhel 6.8 Beta 1 Kernel

[Murali Krishna <murali.krishna@broadcom.com>]

Note: DPDK 2.2.0 build was successful on Rhel 6.7
kernel(2.6.32-573.el6.x86_64) without disabling
igb_uio(CONFIG_RTE_EAL_IGB_UIO=n) and KNI(CONFIG_RTE_KNI_KMOD=n)

Thanks,
Murali

-----Original Message-----
From: Murali Krishna [mailto:murali.krishna@broadcom.com]
Sent: Wednesday, March 23, 2016 8:23 PM
To: 'Thomas Monjalon'
Cc: 'users@dpdk.org'
Subject: RE: [dpdk-users] dpdk 2.2.0 build failure on Rhel 6.8 Beta 1 Kernel

I also tried to build DPDK 2.2.0 on Rhel 6.7 Kernel(2.6.32-573.el6.x86_64)
and I didn’t see any errors, build was successful.

Thanks,
Murali


-----Original Message-----
From: Murali Krishna [mailto:murali.krishna@broadcom.com]
Sent: Wednesday, March 23, 2016 8:08 PM
To: 'Thomas Monjalon'
Cc: 'users@dpdk.org'
Subject: RE: [dpdk-users] dpdk 2.2.0 build failure on Rhel 6.8 Beta 1 Kernel

Hi Thomas,

I tried workaround 1, 2 and 3.

1. I still see some errors after disabling igb_uio(setting
CONFIG_RTE_EAL_IGB_UIO=n in x86_64-native-linuxapp-gcc/.config) in the same
kernel(2.6.32-621.el6.x86_64). Please see the attachment for detailed error
information.

2. I tried to build dpdk 2.2.0 on Rhel7.2 kernel(3.10.0-327.el7.x86_64) and
I didn’t see any errors.

3. I tried to compile older DPDKs(DPDK 1.7.1, DPDK 1.8.0 and DPDK 2.0.0) on
the same Rhel6.8 kernel(2.6.32-621.el6.x86_64). I am seeing the same errors
which I observed while building dpdk 2.2.0 when I try to compile older
DPDKs(DPDK 1.7.1, DPDK 1.8.0 and DPDK 2.0.0)

Thanks,
Murali


-----Original Message-----
From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
Sent: Wednesday, March 23, 2016 7:31 PM
To: Murali Krishna
Cc: users@dpdk.org
Subject: Re: [dpdk-users] dpdk 2.2.0 build failure on Rhel 6.8 Beta 1 Kernel

Hi,

2016-03-23 19:04, Murali Krishna:
> [root@Rhel68B1 dpdk-2.2.0]# cat /etc/redhat-release
>
> Red Hat Enterprise Linux Server release 6.8 Beta (Santiago)
>
> [root@Rhel68B1 dpdk-2.2.0]# uname -a
>
> Linux Rhel68B1 2.6.32-621.el6.x86_64 #1 SMP Wed Feb 24 00:07:06 EST
> 2016
> x86_64 x86_64 x86_64 GNU/Linux
[...]
> /root/dpdk-2.2.0/x86_64-native-linuxapp-gcc/build/lib/librte_eal/linuxapp/igb_uio/igb_uio.c:213:
> error: ‘PCI_MSIX_ENTRY_CTRL_MASKBIT’ undeclared (first use in this
> function)
[...]
> Is there any workaround for this?

Yes there are a lot of workarounds (see the 4 proposals below).
igb_uio is an out-of-tree kernel module.
We are replacing it with upstream modules uio_pci_generic or vfio.

1/ Try to disable igb_uio in your config
(x86_64-native-linuxapp-gcc/.config):
	CONFIG_RTE_EAL_IGB_UIO=n
2/ If you want igb_uio, you should upgrade your kernel 3/ If you want to
keep this kernel, you can try an older DPDK version 4/ If you want to keep
this kernel and this DPDK, you can try to fix
	the issue and submit a patch to dev@dpdk.org.