From 7263a0ad7899994b719ebed736a1119cc2e08110 Mon Sep 17 00:00:00 2001 From: Changchun Ouyang Date: Wed, 23 Sep 2015 12:20:01 +0800 Subject: vhost-user: add a new message to disable/enable a specific virt queue. Add a new message, VHOST_USER_SET_VRING_ENABLE, to enable or disable a specific virt queue, which is similar to attach/detach queue for tap device. virtio driver on guest doesn't have to use max virt queue pair, it could enable any number of virt queue ranging from 1 to max virt queue pair. Signed-off-by: Changchun Ouyang Signed-off-by: Yuanhan Liu Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Signed-off-by: Yuanhan Liu Reviewed-by: Jason Wang Tested-by: Marcel Apfelbaum --- hw/net/vhost_net.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'hw/net/vhost_net.c') diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index ad82b5cce6..2bce89129d 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -422,6 +422,19 @@ VHostNetState *get_vhost_net(NetClientState *nc) return vhost_net; } + +int vhost_set_vring_enable(NetClientState *nc, int enable) +{ + VHostNetState *net = get_vhost_net(nc); + const VhostOps *vhost_ops = net->dev.vhost_ops; + + if (vhost_ops->vhost_backend_set_vring_enable) { + return vhost_ops->vhost_backend_set_vring_enable(&net->dev, enable); + } + + return 0; +} + #else uint64_t vhost_net_get_max_queues(VHostNetState *net) { @@ -472,4 +485,9 @@ VHostNetState *get_vhost_net(NetClientState *nc) { return 0; } + +int vhost_set_vring_enable(NetClientState *nc, int enable) +{ + return 0; +} #endif -- cgit 1.4.1