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authorHawkins Jiawei <yin31149@gmail.com>2023-07-23 20:09:12 +0800
committerMichael S. Tsirkin <mst@redhat.com>2023-10-04 04:54:09 -0400
commite19751a32f140a232fafb037e703abb961a94abb (patch)
treeac7bfa3d3edb76e6c152a514cf9dacad9ede2b8f /include/hw/virtio/virtio-net.h
parent06b636a1e2ad12ab130edcbb0ccf995118440706 (diff)
downloadfocaccia-qemu-e19751a32f140a232fafb037e703abb961a94abb.tar.gz
focaccia-qemu-e19751a32f140a232fafb037e703abb961a94abb.zip
virtio-net: Expose MAX_VLAN
vhost-vdpa shadowed CVQ needs to know the maximum number of
vlans supported by the virtio-net device, so QEMU can restore
the VLAN state in a migration.

Co-developed-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <ca03403319c6405ea7c400836a572255bbc9ceba.1690106284.git.yin31149@gmail.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/virtio/virtio-net.h')
-rw-r--r--include/hw/virtio/virtio-net.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h
index e07a723027..55977f01f0 100644
--- a/include/hw/virtio/virtio-net.h
+++ b/include/hw/virtio/virtio-net.h
@@ -38,6 +38,12 @@ OBJECT_DECLARE_SIMPLE_TYPE(VirtIONet, VIRTIO_NET)
 /* Maximum VIRTIO_NET_CTRL_MAC_TABLE_SET unicast + multicast entries. */
 #define MAC_TABLE_ENTRIES    64
 
+/*
+ * The maximum number of VLANs in the VLAN filter table
+ * added by VIRTIO_NET_CTRL_VLAN_ADD
+ */
+#define MAX_VLAN    (1 << 12)   /* Per 802.1Q definition */
+
 typedef struct virtio_net_conf
 {
     uint32_t txtimer;