Hi Anthony: Any more comments on the series?
Thanks ----- Original Message ----- > This an update of series that let guest and qemu to be co-operated to > send gratuitous packets when needed (e.g after migration). > > As it's hard for qemu to track the network configuration in guest > such > as bondings, vlans or ipv6s. Current gratuitous (RARP packets for > primary mac address) may not work under those situations. The better > method is to allow guest to send them when they can. > > The series first introduce a model specific function in order to let > nic models to use a device specific way to announce the link > presence. With this, virtio-net backend were modified to notify the > guest (through config update interrupt) and let guest send the > gratuitous packet when needed. > > The first user would be virtio-net. > > Changes from V5: > > - use a global variable to decide whether an announcement is needed > after migration > - align with virtio spec and let guest ack the announcement > notification through control vq instead of config status writing > > Changes from V4: > > - keep the old behavior that send the gratuitous packets only after > migration > - decide whether to send gratuitous packets by previous runstate > instead of a dedicated parameter > - check virtio_net_started() instead of VIRTIO_NET_S_LINK_UP before > issue the config update interrupt > - move VIRTIO_NET_S_ANNOUNCE to 0x100 and supress guest config write > to RO bits > - cleanups suggested by Michael > > --- > > Jason Wang (4): > net: announce self after vm start > net: model specific announcing support > virtio-net: notify guest to annouce itself > virtio-net: compat guest announce support > > > hw/pc_piix.c | 35 +++++++++++++++++++++++++++++++++++ > hw/virtio-net.c | 29 +++++++++++++++++++++++++++++ > hw/virtio-net.h | 14 ++++++++++++++ > migration.c | 2 +- > migration.h | 2 ++ > net.h | 2 ++ > savevm.c | 8 +++++--- > vl.c | 5 +++++ > 8 files changed, 93 insertions(+), 4 deletions(-) > > -- > Jason Wang > >
