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| author | Alex Williamson <alex.williamson@redhat.com> | 2010-09-02 09:00:50 -0600 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2010-09-07 20:29:24 +0300 |
| commit | f0c07c7c7b4fe4f9b63c88341fd32707def5a058 (patch) | |
| tree | 189a2c3e3a0a4877cf5e18c9e5968443eb3482c9 /hw/virtio-pci.c | |
| parent | ca736c8e748e3bf77abe401231a412b9cdccb9d3 (diff) | |
| download | qemu-f0c07c7c7b4fe4f9b63c88341fd32707def5a058.tar.gz | |
virtio-net: Make tx_timer timeout configurable
Add an option to make the TX mitigation timer adjustable as a device
option. The 150us hard coded default used currently is reasonable,
but may not be suitable for all workloads, this gives us a way to
adjust it using a single binary. We can't support any random option
though, so use the "x-" prefix to indicate this is a developer
option. Usage:
-device virtio-net-pci,x-txtimer=500000,... # .5ms timeout
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/virtio-pci.c')
| -rw-r--r-- | hw/virtio-pci.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c index 6e8f88a141..1af48e295f 100644 --- a/hw/virtio-pci.c +++ b/hw/virtio-pci.c @@ -107,6 +107,7 @@ typedef struct { #endif /* Max. number of ports we can have for a the virtio-serial device */ uint32_t max_virtserial_ports; + virtio_net_conf net; } VirtIOPCIProxy; /* virtio device */ @@ -613,7 +614,7 @@ static int virtio_net_init_pci(PCIDevice *pci_dev) VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); VirtIODevice *vdev; - vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic); + vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic, &proxy->net); vdev->nvectors = proxy->nvectors; virtio_init_pci(proxy, vdev, @@ -690,6 +691,8 @@ static PCIDeviceInfo virtio_info[] = { DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic), + DEFINE_PROP_UINT32("x-txtimer", VirtIOPCIProxy, + net.txtimer, TX_TIMER_INTERVAL), DEFINE_PROP_END_OF_LIST(), }, .qdev.reset = virtio_pci_reset, |