Chunyan Liu wrote:
> Add codes to support creating domain with network defition of assigning
> SRIOV VF from a pool. And fix hot plug and unplug SRIOV VF under this
> kind of network defition.
>
> Signed-off-by: Chunyan Liu <cyliu@xxxxxxxx>
> ---
> Changes:
> * move a common change in libxl_conf.c into separate patch
>
> src/libxl/libxl_domain.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
> src/libxl/libxl_driver.c | 12 ++++++++++++
> tests/Makefile.am | 3 +++
> 3 files changed, 61 insertions(+)
>
> diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c
> index c8d09b1..8191911 100644
> --- a/src/libxl/libxl_domain.c
> +++ b/src/libxl/libxl_domain.c
> @@ -36,6 +36,7 @@
> #include "virtime.h"
> #include "locking/domain_lock.h"
> #include "xen_common.h"
> +#include "network/bridge_driver.h"
>
> #define VIR_FROM_THIS VIR_FROM_LIBXL
>
> @@ -960,6 +961,48 @@ libxlDomainCreateIfaceNames(virDomainDefPtr def, libxl_domain_config *d_config)
> }
> }
>
> +static int
> +libxlNetworkPrepareDevices(virDomainDefPtr def)
> +{
> + int ret = -1;
> + size_t i;
> +
> + for (i = 0; i < def->nnets; i++) {
> + virDomainNetDefPtr net = def->nets[i];
> + int actualType;
> +
> + /* If appropriate, grab a physical device from the configured
> + * network's pool of devices, or resolve bridge device name
> + * to the one defined in the network definition.
> + */
> + if (networkAllocateActualDevice(def, net) < 0)
> + goto cleanup;
I noticed that other callers of networkAllocateActualDevice() call
networkReleaseActualDevice() in error paths, qemuProcessNetworkPrepareDevices()
being a notable exception. Is it necessary to call networkReleaseActualDevice()
in 'cleanup' if this function fails?
Regards,
Jim
> +
> + actualType = virDomainNetGetActualType(net);
> + if (actualType == VIR_DOMAIN_NET_TYPE_HOSTDEV &&
> + net->type == VIR_DOMAIN_NET_TYPE_NETWORK) {
> + /* Each type='hostdev' network device must also have a
> + * corresponding entry in the hostdevs array. For netdevs
> + * that are hardcoded as type='hostdev', this is already
> + * done by the parser, but for those allocated from a
> + * network / determined at runtime, we need to do it
> + * separately.
> + */
> + virDomainHostdevDefPtr hostdev = virDomainNetGetActualHostdev(net);
> + virDomainHostdevSubsysPCIPtr pcisrc = &hostdev->source.subsys.u.pci;
> +
> + if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
> + hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
> + pcisrc->backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_XEN;
> +
> + if (virDomainHostdevInsert(def, hostdev) < 0)
> + goto cleanup;
> + }
> + }
> + ret = 0;
> + cleanup:
> + return ret;
> +}
>
> /*
> * Start a domain through libxenlight.
> @@ -1036,6 +1079,9 @@ libxlDomainStart(libxlDriverPrivatePtr driver, virDomainObjPtr vm,
> vm, true) < 0)
> goto cleanup;
>
> + if (libxlNetworkPrepareDevices(vm->def) < 0)
> + goto cleanup;
> +
> if (libxlBuildDomainConfig(driver->reservedGraphicsPorts, vm->def,
> cfg->ctx, &d_config) < 0)
> goto cleanup;
> diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c
> index 87ec5a5..a0b157b 100644
> --- a/src/libxl/libxl_driver.c
> +++ b/src/libxl/libxl_driver.c
> @@ -2982,6 +2982,12 @@ libxlDomainAttachHostPCIDevice(libxlDriverPrivatePtr driver,
>
> libxl_device_pci_init(&pcidev);
>
> + /* For those allocated from a network pool/ determined at runtime, it's
> + * not handled by libxlDomainDeviceDefPostParse as hostdev, we need to
> + * set backend correctly.
> + */
> + pcisrc->backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_XEN;
> +
> if (virDomainHostdevFind(vm->def, hostdev, &found) >= 0) {
> virReportError(VIR_ERR_OPERATION_FAILED,
> _("target pci device %.4x:%.2x:%.2x.%.1x already exists"),
> @@ -3323,6 +3329,12 @@ libxlDomainDetachHostPCIDevice(libxlDriverPrivatePtr driver,
>
> libxl_device_pci_init(&pcidev);
>
> + /* For those allocated from a network pool/ determined at runtime, it's
> + * not handled by libxlDomainDeviceDefPostParse as hostdev, we need to
> + * set backend correctly.
> + */
> + pcisrc->backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_XEN;
> +
> idx = virDomainHostdevFind(vm->def, hostdev, &detach);
> if (idx < 0) {
> virReportError(VIR_ERR_OPERATION_FAILED,
> diff --git a/tests/Makefile.am b/tests/Makefile.am
> index 90981dc..b08cc7a 100644
> --- a/tests/Makefile.am
> +++ b/tests/Makefile.am
> @@ -530,6 +530,9 @@ endif ! WITH_XEN
>
> if WITH_LIBXL
> libxl_LDADDS = ../src/libvirt_driver_libxl_impl.la
> +if WITH_NETWORK
> +libxl_LDADDS += ../src/libvirt_driver_network_impl.la
> +endif WITH_NETWORK
> libxl_LDADDS += $(LDADDS)
>
> xlconfigtest_SOURCES = \
--
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