[dpdk-dev] [PATCH v3 5/8] vhost: claim that we support GUEST_ANNOUNCE feature
Olivier MATZ
olivier.matz at 6wind.com
Fri Mar 11 13:39:38 CET 2016
Hi Yuanhan,
On 01/29/2016 05:58 AM, Yuanhan Liu wrote:
> It's actually a feature already enabled in Linux kernel (since v3.5).
> What we need to do is simply to claim that we support such feature,
> and nothing else.
>
> With that, the guest will send an ARP message after live migration
> to notify the switches about the new location of migrated VM.
>
> Signed-off-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
> Tested-by: Pavel Fedin <p.fedin at samsung.com>
> ---
> lib/librte_vhost/virtio-net.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/lib/librte_vhost/virtio-net.c b/lib/librte_vhost/virtio-net.c
> index 03044f6..0ba5045 100644
> --- a/lib/librte_vhost/virtio-net.c
> +++ b/lib/librte_vhost/virtio-net.c
> @@ -74,6 +74,7 @@ static struct virtio_net_config_ll *ll_root;
> #define VHOST_SUPPORTED_FEATURES ((1ULL << VIRTIO_NET_F_MRG_RXBUF) | \
> (1ULL << VIRTIO_NET_F_CTRL_VQ) | \
> (1ULL << VIRTIO_NET_F_CTRL_RX) | \
> + (1ULL << VIRTIO_NET_F_GUEST_ANNOUNCE) | \
> (VHOST_SUPPORTS_MQ) | \
> (1ULL << VIRTIO_F_VERSION_1) | \
> (1ULL << VHOST_F_LOG_ALL) | \
>
I'm trying to compile the dpdk on an debian-7, and it fails due
to this patch. Indeed, the define VIRTIO_NET_F_GUEST_ANNOUNCE is
not present in /usr/include/linux/virtio_net.h on this distribution.
I'm wondering if the librte_vhost shouldn't embed its own version
of virtio_net.h instead of relying on the one from the distribution.
It seems it has been done this way for the virtio guest PMD in
dpdk.org/drivers/net/virtio/virtio_pci.h.
What do you think?
Thanks,
Olivier
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