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Re: [libvirt] [PATCHv2 2/2] qemu: wire up virtio-net segment offloading options




On 09/18/2014 10:15 AM, Ján Tomko wrote:
> Format the segment offloading options specified by
> <driver>
>   <host .../>
>   <guest .../>
> </driver>
> on virtio-net command line.
> ---
>  src/qemu/qemu_command.c                            | 40 ++++++++++++++++++++++
>  .../qemuxml2argv-net-virtio-disable-offloads.args  | 10 ++++++
>  tests/qemuxml2argvtest.c                           |  2 ++
>  3 files changed, 52 insertions(+)
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-virtio-disable-offloads.args
> 
> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> index ce320de..ee49db5 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -4438,6 +4438,46 @@ qemuBuildNicDevStr(virDomainDefPtr def,
>              virBufferAsprintf(&buf, ",event_idx=%s",
>                                virTristateSwitchTypeToString(net->driver.virtio.event_idx));
>          }
> +        if (net->driver.virtio.guest.csum) {

s/guest/host

> +            virBufferAsprintf(&buf, ",csum=%s",
> +                              virTristateSwitchTypeToString(net->driver.virtio.guest.csum));

s/guest/host

> +        }
> +        if (net->driver.virtio.host.gso) {
> +            virBufferAsprintf(&buf, ",gso=%s",
> +                              virTristateSwitchTypeToString(net->driver.virtio.host.gso));
> +        }
> +        if (net->driver.virtio.host.tso4) {
> +            virBufferAsprintf(&buf, ",host_tso4=%s",
> +                              virTristateSwitchTypeToString(net->driver.virtio.host.tso4));
> +        }
> +        if (net->driver.virtio.host.tso6) {
> +            virBufferAsprintf(&buf, ",host_tso6=%s",
> +                              virTristateSwitchTypeToString(net->driver.virtio.host.tso6));
> +        }
> +        if (net->driver.virtio.host.ecn) {
> +            virBufferAsprintf(&buf, ",host_ecn=%s",
> +                              virTristateSwitchTypeToString(net->driver.virtio.host.ecn));
> +        }
> +        if (net->driver.virtio.host.ufo) {
> +            virBufferAsprintf(&buf, ",host_ufo=%s",
> +                              virTristateSwitchTypeToString(net->driver.virtio.host.ufo));
> +        }

           if (net->driver.virtio.guest.csum) {
               virBufferAsprintf(&buf, ",guest_csum=%s",
                                 virTristateSwitchTypeToString(net->driver.virtio.guest.csum));
           }

> +        if (net->driver.virtio.guest.tso4) {
> +            virBufferAsprintf(&buf, ",guest_tso4=%s",
> +                              virTristateSwitchTypeToString(net->driver.virtio.guest.tso4));
> +        }
> +        if (net->driver.virtio.guest.tso6) {
> +            virBufferAsprintf(&buf, ",guest_tso6=%s",
> +                              virTristateSwitchTypeToString(net->driver.virtio.guest.tso6));
> +        }
> +        if (net->driver.virtio.guest.ecn) {
> +            virBufferAsprintf(&buf, ",guest_ecn=%s",
> +                              virTristateSwitchTypeToString(net->driver.virtio.guest.ecn));
> +        }
> +        if (net->driver.virtio.guest.ufo) {
> +            virBufferAsprintf(&buf, ",guest_ufo=%s",
> +                              virTristateSwitchTypeToString(net->driver.virtio.guest.ufo));
> +        }
>      }
>      if (usingVirtio && vhostfdSize > 1) {
>          /* As advised at http://www.linux-kvm.org/page/Multiqueue
> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-net-virtio-disable-offloads.args b/tests/qemuxml2argvdata/qemuxml2argv-net-virtio-disable-offloads.args
> new file mode 100644
> index 0000000..3328988
> --- /dev/null
> +++ b/tests/qemuxml2argvdata/qemuxml2argv-net-virtio-disable-offloads.args
> @@ -0,0 +1,10 @@
> +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \
> +/usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -nodefconfig -nodefaults \
> +-monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb \
> +-hda /dev/HostVG/QEMUGuest7 \
> +-device virtio-net-pci,csum=off,gso=off,\
> +host_tso4=off,host_tso6=off,host_ecn=off,host_ufo=off,\
> +guest_tso4=off,guest_tso6=off,guest_ecn=off,guest_ufo=off,\

This may need a "guest_csum=off,"

ACK with that

John
> +vlan=0,id=net0,mac=00:22:44:66:88:aa,bus=pci.0,addr=0x3 \
> +-net user,vlan=0,name=hostnet0 \
> +-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4
> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
> index 275e699..d3da1e9 100644
> --- a/tests/qemuxml2argvtest.c
> +++ b/tests/qemuxml2argvtest.c
> @@ -965,6 +965,8 @@ mymain(void)
>      DO_TEST("net-virtio", NONE);
>      DO_TEST("net-virtio-device",
>              QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG, QEMU_CAPS_VIRTIO_TX_ALG);
> +    DO_TEST("net-virtio-disable-offloads",
> +            QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG);
>      DO_TEST("net-virtio-netdev",
>              QEMU_CAPS_DEVICE, QEMU_CAPS_NETDEV, QEMU_CAPS_NODEFCONFIG);
>      DO_TEST("net-virtio-s390",
> 


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