Libvirt will create an NIC device command line with enabled "rss"/"hash".
If domain config contains "rss" and/or "rss_hash_report" options for driver.
Also if the qemu has device capabilities for RSS.
Signed-off-by: Andrew Melnychenko <andrew@xxxxxxxxxx>
---
src/qemu/qemu_command.c | 2 ++
src/qemu/qemu_validate.c | 14 ++++++++++++++
2 files changed, 16 insertions(+)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index d822533ccb..dfe6eefd1e 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -4168,6 +4168,8 @@ qemuBuildNicDevProps(virDomainDef *def,
"P:vectors", vectors,
"p:rx_queue_size", net->driver.virtio.rx_queue_size,
"p:tx_queue_size", net->driver.virtio.tx_queue_size,
+ "T:rss", net->driver.virtio.rss,
+ "T:hash", net->driver.virtio.rss_hash_report,
"p:host_mtu", net->mtu,
"T:failover", failover,
NULL) < 0)
diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index 3a69733f81..155bb4a550 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -1743,6 +1743,20 @@ qemuValidateDomainDeviceDefNetwork(const virDomainNetDef *net,
}
}
+ if (net->driver.virtio.rss &&
+ !virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_NET_RSS)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("virtio rss is not supported with this QEMU binary"));
+ return -1;
+ }
+
+ if (net->driver.virtio.rss_hash_report &&
+ !virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_NET_RSS)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("virtio rss hash report is not supported with this QEMU binary"));
+ return -1;
+ }
+
if (net->mtu &&
!virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_NET_HOST_MTU)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
--
2.34.1
