[dpdk-dev] DPDK 2.2 build failing with vhost-kni

[chintu hetam]

Thanks Xie.

I am trying to test FreeBSD-9.3-virtio as guest. Somewhere in the forum i
found virtio-kni combination reaching around 2.7 Gbps performance, which is
enough for my test, though i dint find equivalent driver performance
characterization for qemu-vhost user space combination.
Also, as per nics-2.2 user guide, "Linux kernel with KVM module; vhost
module loaded and ioeventfd supported. Qemu standard backend without vhost
support isn’t tested, and probably isn’t supported",which is bit different
from vhost user space support,but still..

Just to be sure vhost user space = qemu virtio backend- tap-linux-bridge
configuration, as per nics guide, right?

Thanking in advance, again.







On Mon, Apr 11, 2016 at 4:25 AM, Xie, Huawei <huawei.xie at intel.com> wrote:

> On 4/10/2016 7:26 AM, chintu hetam wrote:
> > I am compiling DPDK 2.2 on Fedora 23 and i am seeing following build
> error
> >
> /home/vcr/devel/dpdk/dpdk-2.2.0/build/build/lib/librte_eal/linuxapp/kni/kni_vhost.c:
> > In function ‘kni_sock_poll’:
> >
> /home/vcr/devel/dpdk/dpdk-2.2.0/build/build/lib/librte_eal/linuxapp/kni/kni_vhost.c:254:25:
> > error: ‘SOCK_ASYNC_NOSPACE’ undeclared (first use in this function)
> >       (!test_and_set_bit(SOCK_ASYNC_NOSPACE, &q->sock->flags) &&
> >                          ^
>
> Hi, besides the issue, now user space vhost is the preferred way to
> switch packets with the virtual machine, and we have plans to remove kni
> vhost support. Do you have any reason to use kni vhost?
>