Re: [dpdk-dev] No probed ethernet devices /DPDP 1.7.1 in Fedora 21

[sothy shan <sothy.e98@gmail.com>]

I guess you are completely wrong.

Becasue when I do

make config T=x86_64-ivshmem-linuxapp-gcc
make

Testpmd works.

When I do  with

export RTE_SDK=$(pwd)export RTE_TARGET="x86_64-ivshmem-linuxapp-gcc"
make CONFIG_RTE_BUILD_COMBINE_LIBS=y CONFIG_RTE_BUILD_SHARED_LIB=y
install T="$RTE_TARGET"


I get same error. I guess there are some problems in above two config
variables. I see some email post over some changes.But I didnt get the
point, but working on it.

It is just information for you.


Best regards

Sothy



On Sat, Jan 10, 2015 at 1:44 PM, Neil Horman <nhorman@tuxdriver.com> wrote:

> On Fri, Jan 09, 2015 at 05:20:31PM +0100, sothy shan wrote:
> > According to your argument,
> >
> > I compiled qemu in DPDK OVS as provided with command.
> >
> > After that, I compiled as stated here.
> >
> > cd DPDK                     # DPDK sub-directoryexport
> > RTE_SDK=$(pwd)export RTE_TARGET="x86_64-ivshmem-linuxapp-gcc"
> > make CONFIG_RTE_BUILD_COMBINE_LIBS=y CONFIG_RTE_BUILD_SHARED_LIB=y
> > install T="$RTE_TARGET"
> >
> > Then I try to run the command for testpmd. I got same error. Any idea
> > where is the mistake? Thanks
> >
> > DPDK 1.7.1 in Fedora 21. PLease see the error here
> >
> >
> Did you run qemu and create an ivshmem device?  Thats why you needed qemu
> support so that you could run it and have qemu create a network device
> that had
> a ivshmem interface
> Neil
>
> >
> >
> >
> > [cubiq@localhost dpdk-1.7.1]$ sudo
> > ./x86_64-ivshmem-linuxapp-gcc/app/testpmd -c7 -n3 -- -i --nb-cores=2
> > --nb-ports=2
> > EAL: Detected lcore 0 as core 0 on socket 0
> > EAL: Detected lcore 1 as core 1 on socket 0
> > EAL: Detected lcore 2 as core 2 on socket 0
> > EAL: Detected lcore 3 as core 3 on socket 0
> > EAL: Detected lcore 4 as core 0 on socket 0
> > EAL: Detected lcore 5 as core 1 on socket 0
> > EAL: Detected lcore 6 as core 2 on socket 0
> > EAL: Detected lcore 7 as core 3 on socket 0
> > EAL: Support maximum 64 logical core(s) by configuration.
> > EAL: Detected 8 lcore(s)
> > EAL: Searching for IVSHMEM devices...
> > EAL: No IVSHMEM configuration found!
> > EAL: Setting up memory...
> > EAL: Ask a virtual area of 0x1800000 bytes
> > EAL: Virtual area found at 0x7fbe51000000 (size = 0x1800000)
> > EAL: Ask a virtual area of 0x1400000 bytes
> > EAL: Virtual area found at 0x7fbe4fa00000 (size = 0x1400000)
> > EAL: Ask a virtual area of 0x800000 bytes
> > EAL: Virtual area found at 0x7fbe52a00000 (size = 0x800000)
> > EAL: Ask a virtual area of 0x2000000 bytes
> > EAL: Virtual area found at 0x7fbe4d800000 (size = 0x2000000)
> > EAL: Ask a virtual area of 0x400000 bytes
> > EAL: Virtual area found at 0x7fbe4d200000 (size = 0x400000)
> > EAL: Ask a virtual area of 0x400000 bytes
> > EAL: Virtual area found at 0x7fbe4cc00000 (size = 0x400000)
> > EAL: Ask a virtual area of 0x400000 bytes
> > EAL: Virtual area found at 0x7fbe4c600000 (size = 0x400000)
> > EAL: Ask a virtual area of 0x1c00000 bytes
> > EAL: Virtual area found at 0x7fbe4a800000 (size = 0x1c00000)
> > EAL: Ask a virtual area of 0x400000 bytes
> > EAL: Virtual area found at 0x7fbe4a200000 (size = 0x400000)
> > EAL: Requesting 64 pages of size 2MB from socket 0
> > EAL: TSC frequency is ~3691108 KHz
> > EAL: Master core 0 is ready (tid=98377940)
> > EAL: Core 2 is ready (tid=491fd700)
> > EAL: Core 1 is ready (tid=499fe700)
> > EAL: PCI device 0000:06:00.0 on NUMA socket 0
> > EAL:   probe driver: 8086:154d rte_ixgbe_pmd
> > EAL:   0000:06:00.0 not managed by VFIO driver, skipping
> > EAL:   0000:06:00.0 not managed by UIO driver, skipping
> > EAL: PCI device 0000:06:00.1 on NUMA socket 0
> > EAL:   probe driver: 8086:154d rte_ixgbe_pmd
> > EAL:   0000:06:00.1 not managed by VFIO driver, skipping
> > EAL:   0000:06:00.1 not managed by UIO driver, skipping
> > EAL: Error - exiting with code: 1
> >   Cause: No probed ethernet devices - check that
> > CONFIG_RTE_LIBRTE_IGB_PMD=y and that CONFIG_RTE_LIBRTE_EM_PMD=y and that
> > CONFIG_RTE_LIBRTE_IXGBE_PMD=y in your configuration file
> >
> >
> >
> > On Fri, Dec 26, 2014 at 3:37 PM, Neil Horman <nhorman@tuxdriver.com>
> wrote:
> >
> > > On Fri, Dec 26, 2014 at 09:01:13AM +0100, sothy shan wrote:
> > > > On Thu, Dec 25, 2014 at 6:08 PM, Neil Horman <nhorman@tuxdriver.com>
> > > wrote:
> > > >
> > > > > On Thu, Dec 25, 2014 at 10:11:51AM +0100, sothy shan wrote:
> > > > > > On Wed, Dec 24, 2014 at 4:04 PM, Neil Horman <
> nhorman@tuxdriver.com>
> > > > > wrote:
> > > > > >
> > > > > > > On Wed, Dec 24, 2014 at 02:26:21PM +0100, sothy shan wrote:
> > > > > > > > Hello!
> > > > > > > >
> > > > > > > > I am playing with DPDK 1.7.1 in Fedora.
> > > > > > > >
> > > > > > > > When I do like this:
> > > > > > > >
> > > > > > > > export RTE_SDK=$(pwd)export
> > > RTE_TARGET="x86_64-ivshmem-linuxapp-gcc"
> > > > > > > > make install T="$RTE_TARGET"
> > > > > > > >
> > > > > > > > It worked. Means Testpmd is running.
> > > > > > > >
> > > > > > > > When I run as mentioned below:
> > > > > > > >
> > > > > > > > make CONFIG_RTE_BUILD_SHARED_LIB=y  install T="$RTE_TARGET"
> > > > > > > >
> > > > > > > > Build is sucess. But Testpmd gives error.
> > > > > > > >
> > > > > > > > Error is :
> > > > > > > >
> > > > > > > The dpdk ivshmem build assumes the presence of ivshmem devices
> as
> > > > > plumbed
> > > > > > > by
> > > > > > > qemu virtual guests.  If you don't have a qemu guest running
> dpdk
> > > won't
> > > > > > > find any
> > > > > > > shared memory devices, which is exactly what you are seeing.
> That
> > > > > said,
> > > > > > > even if
> > > > > > > you are running qemu guests, IIRC Fedora doesn't enable ivshmem
> > > because
> > > > > > > the code
> > > > > > > has some security and behavioral issues still I think.  You'll
> > > need to
> > > > > > > rebuild
> > > > > > > qemu to add support for it.
> > > > > > >
> > > > > >
> > > > > > My understanding is that It is problem of enabling
> > > > > > CONFIG_RTE_BUILD_SHARED_LIB=y in make command, I am able to build
> > > target
> > > > > of
> > > > > > x86_64-ivshmem-linuxapp-gcc alone without shared_lib flag. I
> suspect
> > > an
> > > > > > error because of shared lib flag.
> > > > > >
> > > > > What exactly do you think that problem is?  You just said in your
> > > > > origional note that you are able to build the sdk and test apps
> without
> > > > > issue
> > > > > (with or without building them as DSO's).  The problem comes in
> when
> > > you
> > > > > run
> > > > > the app, and I expect you get the same error with both static and
> > > dynamic
> > > > > builds.
> > > > >
> > > > > The problem seems obvious to me.  DPDK cannot find any ivshmem
> devices
> > > on
> > > > > your
> > > > > system when it loads (look at the code in rte_eal_ivshmem_init).
> The
> > > error
> > > > > message you see gets output if you don't generate an
> ivshmem_config,
> > > which
> > > > > happens (among a few other reasons), if you don't have any ivshmem
> > > devices
> > > > > created on your system
> > > > >
> > > > > Neil
> > > > >
> > > >
> > > >
> > > > Do you have any hints for these messsages?
> > > >
> > > Yes, I gave you direction in my last note, its the fact that no ivshmem
> > > devices
> > > were found.
> > >
> > > > EAL: Error - exiting with code: 1
> > > >   Cause: No probed ethernet devices - check that
> > > > CONFIG_RTE_LIBRTE_IGB_PMD=y and that CONFIG_RTE_LIBRTE_EM_PMD=y and
> that
> > > > CONFIG_RTE_LIBRTE_IXGBE_PMD=y in your configuration file
> > > >
> > > This is a false indicator.  If you look at a later version of the code
> > > you'll
> > > see that the message has been pruned to just indicate that no probed
> > > ethernet
> > > devices were found.  The remainder of the message was there because it
> > > used to
> > > be a presumption that a physical devices was in use, which need not be
> the
> > > case.
> > > Like I said before you need an ivshmem driver, which qemu provides, but
> > > not in
> > > the current fedora build.
> > >
> > > >
> > > > Is that with IVSHMEM device or physical devices? I guess it is
> physical
> > > > device problem?
> > > >
> > > No, its not, you're making this harder than it needs to be.  google
> qemu
> > > and
> > > ivshmem and you'll see.  Heres an article to get you started:
> > > http://lwn.net/Articles/380869/
> > > Neil
> > >
> > > > Thank you
> > > >
> > > > Sothy
> > >
>