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authorAlex Williamson <alex.williamson@hp.com>2009-06-05 14:46:52 -0600
committerMark McLoughlin <markmc@redhat.com>2009-06-09 11:38:50 +0100
commit6c042c16fc2453e147e8aed66510820302f50702 (patch)
tree935e15200cc9a026e46cc90e7fcf04379f8ca852 /hw/virtio-net.c
parent8aeff62d75b72263d855a0b5892b8d52ad6f09e0 (diff)
downloadfocaccia-qemu-6c042c16fc2453e147e8aed66510820302f50702.tar.gz
focaccia-qemu-6c042c16fc2453e147e8aed66510820302f50702.zip
virtio-net: Add version_id 7 placeholder for vnet header support
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Diffstat (limited to 'hw/virtio-net.c')
-rw-r--r--hw/virtio-net.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/hw/virtio-net.c b/hw/virtio-net.c
index a3ba890312..a77fdb29e0 100644
--- a/hw/virtio-net.c
+++ b/hw/virtio-net.c
@@ -16,7 +16,7 @@
 #include "qemu-timer.h"
 #include "virtio-net.h"
 
-#define VIRTIO_NET_VM_VERSION    6
+#define VIRTIO_NET_VM_VERSION    7
 
 #define MAC_TABLE_ENTRIES    32
 #define MAX_VLAN    (1 << 12)   /* Per 802.1Q definition */
@@ -528,6 +528,7 @@ static void virtio_net_save(QEMUFile *f, void *opaque)
     qemu_put_be32(f, n->mac_table.in_use);
     qemu_put_buffer(f, n->mac_table.macs, n->mac_table.in_use * ETH_ALEN);
     qemu_put_buffer(f, (uint8_t *)n->vlans, MAX_VLAN >> 3);
+    qemu_put_be32(f, 0); /* vnet-hdr placeholder */
 }
 
 static int virtio_net_load(QEMUFile *f, void *opaque, int version_id)
@@ -567,6 +568,12 @@ static int virtio_net_load(QEMUFile *f, void *opaque, int version_id)
     if (version_id >= 6)
         qemu_get_buffer(f, (uint8_t *)n->vlans, MAX_VLAN >> 3);
 
+    if (version_id >= 7 && qemu_get_be32(f)) {
+        fprintf(stderr,
+                "virtio-net: saved image requires vnet header support\n");
+        exit(1);
+    }
+
     if (n->tx_timer_active) {
         qemu_mod_timer(n->tx_timer,
                        qemu_get_clock(vm_clock) + TX_TIMER_INTERVAL);