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authorYuanhan Liu <yuanhan.liu@linux.intel.com>2015-09-23 12:19:58 +0800
committerMichael S. Tsirkin <mst@redhat.com>2015-09-24 16:27:52 +0300
commite2051e9e004649b53af4db34f78c689fb44e075b (patch)
tree5621451188099ce6e8d2df7dcc81f0d2401fd166 /hw/net
parentd1f8b30ec8dde0318fd1b98d24a64926feae9625 (diff)
vhost-user: add VHOST_USER_GET_QUEUE_NUM message
This is for querying how many queues the backend supports if it has mq support(when VHOST_USER_PROTOCOL_F_MQ flag is set from the quried protocol features). vhost_net_get_max_queues() is the interface to export that value, and to tell if the backend supports # of queues user requested, which is done in the following patch. 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> Tested-by: Marcel Apfelbaum <marcel@redhat.com>
Diffstat (limited to 'hw/net')
-rw-r--r--hw/net/vhost_net.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index b7d29b7cf4..f663e5a505 100644
--- a/hw/net/vhost_net.c
+++ b/hw/net/vhost_net.c
@@ -122,6 +122,11 @@ void vhost_net_ack_features(struct vhost_net *net, uint64_t features)
vhost_ack_features(&net->dev, vhost_net_get_feature_bits(net), features);
}
+uint64_t vhost_net_get_max_queues(VHostNetState *net)
+{
+ return net->dev.max_queues;
+}
+
static int vhost_net_get_fd(NetClientState *backend)
{
switch (backend->info->type) {
@@ -144,6 +149,8 @@ struct vhost_net *vhost_net_init(VhostNetOptions *options)
goto fail;
}
+ net->dev.max_queues = 1;
+
if (backend_kernel) {
r = vhost_net_get_fd(options->net_backend);
if (r < 0) {
@@ -414,6 +421,11 @@ VHostNetState *get_vhost_net(NetClientState *nc)
return vhost_net;
}
#else
+uint64_t vhost_net_get_max_queues(VHostNetState *net)
+{
+ return 1;
+}
+
struct vhost_net *vhost_net_init(VhostNetOptions *options)
{
error_report("vhost-net support is not compiled in");