When live migration is finished, the backup VM needs to proactively announce its new location. DPDK vhost has implemented VHOST_USER_PROTOCOL_F_RARP to generate a RARP packet to switch in dequeue path. Another method is to let the guest proactively send out RARP packet using VIRTIO_NET_F_GUEST_ANNOUNCE feature.
This patch set enables this feature in virtio pmd, to support VM running virtio pmd be migrated without vhost supporting RARP generation. v2: - Use spaces instead of tabs between the code and comments. - Remove unnecessary parentheses. - Use rte_pktmbuf_mtod directly to get eth_hdr addr. - Fix virtio_dev_pause return value check. Xiao Wang (2): net/virtio: make control queue thread-safe net/virtio: support GUEST ANNOUNCE drivers/net/virtio/virtio_ethdev.c | 138 ++++++++++++++++++++++++++++++++++++- drivers/net/virtio/virtio_ethdev.h | 4 ++ drivers/net/virtio/virtio_pci.h | 1 + drivers/net/virtio/virtio_rxtx.c | 82 ++++++++++++++++++++++ drivers/net/virtio/virtio_rxtx.h | 1 + drivers/net/virtio/virtqueue.h | 11 +++ 6 files changed, 234 insertions(+), 3 deletions(-) -- 1.8.3.1
