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vhost-user: add protocol feature negotiation

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Support a separate bitmask for vhost-user protocol features,
and messages to get/set protocol features.

Invoke them at init.

No features are defined yet.

[ leverage vhost_user_call for request handling -- Yuanhan Liu ]

Signed-off-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Tested-by: Marcel Apfelbaum <marcel@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2015-09-23 12:19:56 +08:00
parent 7305483a3d
commit dcb10c000c
4 changed files with 71 additions and 0 deletions
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2
hw/net/vhost_net.c
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@ -152,8 +152,10 @@ struct vhost_net *vhost_net_init(VhostNetOptions *options)
net->dev.backend_features = qemu_has_vnet_hdr(options->net_backend)
? 0 : (1ULL << VHOST_NET_F_VIRTIO_NET_HDR);
net->backend = r;
net->dev.protocol_features = 0;
} else {
net->dev.backend_features = 0;
net->dev.protocol_features = 0;
net->backend = -1;
}
net->nc = options->net_backend;