[libvirt] [PATCH 5/5] Supporting managed option for forward devs when using HOSTDEV mode
Shradha Shah
sshah at solarflare.com
Fri Jun 8 15:30:03 UTC 2012
This patch supports the managed option in a network xml for network devices.
This option is used for pci network devices when forward mode=hostdev.
Hence the example network xml would be:
<network>
<name>direct-network</name>
<uuid>81ff0d90-c91e-6742-64da-4a736edb9a8f</uuid>
<forward mode="hostdev">
<pf dev="eth2" managed='yes'/>
</forward>
</network>
OR
<network>
<name>direct-network</name>
<uuid>81ff0d90-c91e-6742-64da-4a736edb9a8f</uuid>
<forward mode="hostdev">
<interface dev="0000:04:00.1" managed='yes'/>
<interface dev="0000:04:00.2" managed='yes'/>
<interface dev="0000:04:00.3" managed='yes'/>
</forward>
</network>
Signed-off-by: Shradha Shah <sshah at solarflare.com>
---
src/conf/network_conf.c | 61 ++++++++++++++++++++++++++++++++++++++++--
src/conf/network_conf.h | 2 +
src/network/bridge_driver.c | 5 +++-
3 files changed, 64 insertions(+), 4 deletions(-)
diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c
index 6b346c3..18e4ee3 100644
--- a/src/conf/network_conf.c
+++ b/src/conf/network_conf.c
@@ -986,6 +986,7 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt)
char *forwardDev = NULL;
xmlNodePtr save = ctxt->node;
xmlNodePtr bandwidthNode = NULL;
+ char *managed = NULL;
if (VIR_ALLOC(def) < 0) {
virReportOOMError();
@@ -1128,6 +1129,7 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt)
}
forwardDev = virXPathString("string(./@dev)", ctxt);
+ managed = virXPathString("string(./managed)", ctxt);
/* all of these modes can use a pool of physical interfaces */
nForwardIfs = virXPathNodeSet("./interface", ctxt, &forwardIfNodes);
@@ -1151,6 +1153,12 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt)
goto error;
}
+ if (managed) {
+ virNetworkReportError(VIR_ERR_XML_ERROR,
+ _("A managed field should not be used in this location when using a SRIOV PF"));
+ goto error;
+ }
+
forwardDev = virXMLPropString(*forwardPfNodes, "dev");
if (!forwardDev) {
virNetworkReportError(VIR_ERR_XML_ERROR,
@@ -1159,9 +1167,16 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt)
goto error;
}
+ managed = virXMLPropString(*forwardPfNodes, "managed");
+ if(managed != NULL) {
+ if (STREQ(managed, "yes"))
+ def->forwardPfs->managed = 1;
+ }
+
def->forwardPfs->usageCount = 0;
def->forwardPfs->dev = forwardDev;
forwardDev = NULL;
+ managed = NULL;
def->nForwardPfs++;
} else if (nForwardPfs > 1) {
virNetworkReportError(VIR_ERR_XML_ERROR,
@@ -1170,6 +1185,7 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt)
}
if (nForwardIfs > 0 || forwardDev) {
int ii;
+ unsigned int managedvalue = 0;
/* allocate array to hold all the portgroups */
if (VIR_ALLOC_N(def->forwardIfs, MAX(nForwardIfs, 1)) < 0) {
@@ -1181,12 +1197,24 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt)
def->forwardIfs[0].usageCount = 0;
def->forwardIfs[0].dev = forwardDev;
forwardDev = NULL;
+ if (managed != NULL) {
+ if (STREQ(managed, "yes"))
+ def->forwardIfs[0].managed = 1;
+ }
+ managed = NULL;
def->nForwardIfs++;
}
/* parse each forwardIf */
for (ii = 0; ii < nForwardIfs; ii++) {
forwardDev = virXMLPropString(forwardIfNodes[ii], "dev");
+ managed = virXMLPropString(forwardIfNodes[ii], "managed");
+ if (managed != NULL) {
+ if (STREQ(managed, "yes"))
+ managedvalue = 1;
+ else
+ managedvalue = 0;
+ }
if (!forwardDev) {
virNetworkReportError(VIR_ERR_XML_ERROR,
_("Missing required dev attribute in network '%s' forward interface element"),
@@ -1204,12 +1232,22 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt)
forwardDev, def->name);
goto error;
}
+
+ if (managedvalue != def->forwardIfs[0].managed) {
+ virNetworkReportError(VIR_ERR_XML_ERROR,
+ _("managed field of forward dev must match that of the first interface element dev in network '%s'"),
+ def->name);
+ goto error;
+ }
+ VIR_FREE(managed);
VIR_FREE(forwardDev);
continue;
}
def->forwardIfs[ii].dev = forwardDev;
+ def->forwardIfs[ii].managed = managedvalue;
forwardDev = NULL;
+ managed = NULL;
def->forwardIfs[ii].usageCount = 0;
def->nForwardIfs++;
}
@@ -1224,6 +1262,7 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt)
}
VIR_FREE(forwardDev);
+ VIR_FREE(managed);
VIR_FREE(forwardPfNodes);
VIR_FREE(forwardIfNodes);
@@ -1541,15 +1580,31 @@ char *virNetworkDefFormat(const virNetworkDefPtr def, unsigned int flags)
(def->nForwardIfs || def->nForwardPfs) ? "" : "/");
/* For now, hard-coded to at most 1 forwardPfs */
- if (def->nForwardPfs)
- virBufferEscapeString(&buf, " <pf dev='%s'/>\n",
+ if (def->nForwardPfs) {
+ virBufferEscapeString(&buf, " <pf dev='%s'",
def->forwardPfs[0].dev);
+ if (def->forwardType == VIR_NETWORK_FORWARD_HOSTDEV) {
+ if (def->forwardPfs[0].managed == 1)
+ virBufferAddLit(&buf, " managed='yes'");
+ else
+ virBufferAddLit(&buf, " managed='no'");
+ }
+ virBufferAddLit(&buf, "/>\n");
+ }
+
if (def->nForwardIfs &&
(!def->nForwardPfs || !(flags & VIR_NETWORK_XML_INACTIVE))) {
for (ii = 0; ii < def->nForwardIfs; ii++) {
- virBufferEscapeString(&buf, " <interface dev='%s'/>\n",
+ virBufferEscapeString(&buf, " <interface dev='%s'",
def->forwardIfs[ii].dev);
+ if (def->forwardType == VIR_NETWORK_FORWARD_HOSTDEV) {
+ if (def->forwardIfs[ii].managed == 1)
+ virBufferAddLit(&buf, " managed='yes'");
+ else
+ virBufferAddLit(&buf, " managed='no'");
+ }
+ virBufferAddLit(&buf, "/>\n");
}
}
if (def->nForwardPfs || def->nForwardIfs)
diff --git a/src/conf/network_conf.h b/src/conf/network_conf.h
index d473c71..4276934 100644
--- a/src/conf/network_conf.h
+++ b/src/conf/network_conf.h
@@ -135,6 +135,7 @@ struct _virNetworkForwardIfDef {
char *dev; /* name of device */
int usageCount; /* how many guest interfaces are bound to this device? */
bool isPciAddr; /* Differentiate a VF based on interface name or pci addr*/
+ unsigned int managed:1;
};
typedef struct _virNetworkForwardPfDef virNetworkForwardPfDef;
@@ -142,6 +143,7 @@ typedef virNetworkForwardPfDef *virNetworkForwardPfDefPtr;
struct _virNetworkForwardPfDef {
char *dev; /* name of device */
int usageCount; /* how many guest interfaces are bound to this device? */
+ unsigned int managed:1;
};
typedef struct _virPortGroupDef virPortGroupDef;
diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
index 691ab07..a2293e6 100644
--- a/src/network/bridge_driver.c
+++ b/src/network/bridge_driver.c
@@ -2807,6 +2807,9 @@ networkCreateInterfacePool(virNetworkDefPtr netdef) {
netdef->forwardIfs[ii].isPciAddr = true;
else
netdef->forwardIfs[ii].isPciAddr = false;
+
+ if (netdef->forwardPfs[0].managed == 1)
+ netdef->forwardIfs[ii].managed = 1;
}
ret = 0;
@@ -2942,7 +2945,7 @@ networkAllocateActualDevice(virDomainNetDefPtr iface)
iface->data.network.actual->data.hostdev.def.parent.data.net = iface;
iface->data.network.actual->data.hostdev.def.info = &iface->info;
iface->data.network.actual->data.hostdev.def.mode = VIR_DOMAIN_HOSTDEV_MODE_SUBSYS;
- iface->data.network.actual->data.hostdev.def.managed = 1;
+ iface->data.network.actual->data.hostdev.def.managed = dev->managed;
iface->data.network.actual->data.hostdev.def.source.subsys.type = VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI;
if (dev->isPciAddr == true) {
--
1.7.4.4
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