commit 8aab0d1dbe90c7b5ac6672a1a09b0578178f5f4c
author Cindy Lu <lulu@redhat.com> Thu Dec 22 15:04:49 2022 +0800
committer Michael S. Tsirkin <mst@redhat.com> Sun Jan 08 01:54:22 2023 -0500
tree 1975eb9c04f76f27cc6856fae4d90405f550addb
parent f9a09ca3ea69d108d828b7c82f1bd61b2df6fc96

virtio-net: add support for configure interrupt

Add functions to support configure interrupt in virtio_net
Add the functions to support vhost_net_config_pending
and vhost_net_config_mask.

Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20221222070451.936503-9-lulu@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

hw/net/vhost_net-stub.c

diff --git a/hw/net/vhost_net-stub.c b/hw/net/vhost_net-stub.c
index 66ed5f0..72df6d7 100644
--- a/hw/net/vhost_net-stub.c
+++ b/hw/net/vhost_net-stub.c
@@ -82,6 +82,15 @@
 {
 }
 
+bool vhost_net_config_pending(VHostNetState *net)
+{
+    return false;
+}
+
+void vhost_net_config_mask(VHostNetState *net, VirtIODevice *dev, bool mask)
+{
+}
+
 int vhost_net_notify_migration_done(struct vhost_net *net, char* mac_addr)
 {
     return -1;

hw/net/vhost_net.c

diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index 984b130..c4eecc6 100644
--- a/hw/net/vhost_net.c
+++ b/hw/net/vhost_net.c
@@ -487,6 +487,15 @@
     vhost_virtqueue_mask(&net->dev, dev, idx, mask);
 }
 
+bool vhost_net_config_pending(VHostNetState *net)
+{
+    return vhost_config_pending(&net->dev);
+}
+
+void vhost_net_config_mask(VHostNetState *net, VirtIODevice *dev, bool mask)
+{
+    vhost_config_mask(&net->dev, dev, mask);
+}
 VHostNetState *get_vhost_net(NetClientState *nc)
 {
     VHostNetState *vhost_net = 0;

hw/net/virtio-net.c

diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 0bfe454..f191e30 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -3332,7 +3332,7 @@
      */
 
     if (idx == VIRTIO_CONFIG_IRQ_IDX) {
-        return false;
+        return vhost_net_config_pending(get_vhost_net(nc->peer));
     }
     return vhost_net_virtqueue_pending(get_vhost_net(nc->peer), idx);
 }
@@ -3364,9 +3364,9 @@
      */
 
     if (idx == VIRTIO_CONFIG_IRQ_IDX) {
+        vhost_net_config_mask(get_vhost_net(nc->peer), vdev, mask);
         return;
     }
-
     vhost_net_virtqueue_mask(get_vhost_net(nc->peer), vdev, idx, mask);
 }
 

include/net/vhost_net.h

diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h
index dfb1375..c37aba3 100644
--- a/include/net/vhost_net.h
+++ b/include/net/vhost_net.h
@@ -39,6 +39,8 @@
 bool vhost_net_virtqueue_pending(VHostNetState *net, int n);
 void vhost_net_virtqueue_mask(VHostNetState *net, VirtIODevice *dev,
                               int idx, bool mask);
+bool vhost_net_config_pending(VHostNetState *net);
+void vhost_net_config_mask(VHostNetState *net, VirtIODevice *dev, bool mask);
 int vhost_net_notify_migration_done(VHostNetState *net, char* mac_addr);
 VHostNetState *get_vhost_net(NetClientState *nc);