Added "rss" and "rss_hash_report" configuration that should be used with
qemu virtio RSS.
Both options are triswitches. Used as "driver" options and affects only NIC
with model type "virtio".
In other patches - options should turn on virtio-net RSS and hash properties.
Also "rss" may used to affect "ebpf_rss_fds" property of virtio-net in qemu.
Signed-off-by: Andrew Melnychenko <andrew@xxxxxxxxxx>
---
src/conf/domain_conf.c | 31 ++++++++++++++++++++++++++++++-
src/conf/domain_conf.h | 2 ++
2 files changed, 32 insertions(+), 1 deletion(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 06c1fcf5e5..7289acc9c6 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -10244,6 +10244,8 @@ virDomainNetDefParseXML(virDomainXMLOption *xmlopt,
g_autofree char *vhost_path = NULL;
g_autofree char *tap = NULL;
g_autofree char *vhost = NULL;
+ g_autofree char *virtio_rss = NULL;
+ g_autofree char *virtio_rss_hash_report = NULL;
const char *prefix = xmlopt ? xmlopt->config.netPrefix : NULL;
if (!(def = virDomainNetDefNew(xmlopt)))
@@ -10385,6 +10387,8 @@ virDomainNetDefParseXML(virDomainXMLOption *xmlopt,
queues = virXMLPropString(driver_node, "queues");
rx_queue_size = virXMLPropString(driver_node, "rx_queue_size");
tx_queue_size = virXMLPropString(driver_node, "tx_queue_size");
+ virtio_rss = virXMLPropString(driver_node, "rss");
+ virtio_rss_hash_report = virXMLPropString(driver_node, "rss_hash_report");
if ((filterref_node = virXPathNode("./filterref", ctxt))) {
filter = virXMLPropString(filterref_node, "filter");
@@ -10796,7 +10800,24 @@ virDomainNetDefParseXML(virDomainXMLOption *xmlopt,
}
def->driver.virtio.tx_queue_size = q;
}
-
+ if (virtio_rss) {
+ if ((val = virTristateSwitchTypeFromString(virtio_rss)) <= 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("'rss' attribute must be 'on'/'off'/'default': %s"),
+ virtio_rss);
+ goto error;
+ }
+ def->driver.virtio.rss = val;
+ }
+ if (virtio_rss_hash_report) {
+ if ((val = virTristateSwitchTypeFromString(virtio_rss_hash_report)) <= 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("'rss_hash_report' attribute must be 'on'/'off'/'default': %s"),
+ virtio_rss_hash_report);
+ goto error;
+ }
+ def->driver.virtio.rss_hash_report = val;
+ }
if ((tmpNode = virXPathNode("./driver/host", ctxt))) {
if (virXMLPropTristateSwitch(tmpNode, "csum", VIR_XML_PROP_NONE,
&def->driver.virtio.host.csum) < 0)
@@ -24568,6 +24589,14 @@ virDomainVirtioNetDriverFormat(virBuffer *buf,
if (def->driver.virtio.tx_queue_size)
virBufferAsprintf(buf, " tx_queue_size='%u'",
def->driver.virtio.tx_queue_size);
+ if (def->driver.virtio.rss != VIR_TRISTATE_SWITCH_ABSENT) {
+ virBufferAsprintf(buf, " rss='%s'",
+ virTristateSwitchTypeToString(def->driver.virtio.rss));
+ }
+ if (def->driver.virtio.rss_hash_report != VIR_TRISTATE_SWITCH_ABSENT) {
+ virBufferAsprintf(buf, " rss_hash_report='%s'",
+ virTristateSwitchTypeToString(def->driver.virtio.rss_hash_report));
+ }
virDomainVirtioOptionsFormat(buf, def->virtio);
}
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index ca21082624..60cb70b204 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1046,6 +1046,8 @@ struct _virDomainNetDef {
virTristateSwitch ecn;
virTristateSwitch ufo;
} guest;
+ virTristateSwitch rss;
+ virTristateSwitch rss_hash_report;
} virtio;
} driver;
struct {
--
2.31.1
