[libvirt] [PATCH 1/4] virInterface: Expose link state & speed
Michal Privoznik
mprivozn at redhat.com
Tue Jun 3 12:22:09 UTC 2014
Currently it is not possible to determine the speed of an interface
and whether a link is actually detected from the API. Orchestrating
platforms want to be able to determine when the link has failed and
where multiple speeds may be available which one the interface is
actually connected at. This commit introduces an extension to our
interface XML (without implementation to interface driver backends):
<interface type='ethernet' name='eth0'>
<start mode='none'/>
<mac address='aa:bb:cc:dd:ee:ff'/>
<link speed='1000' state='up'/>
<mtu size='1492'/>
...
</interface>
Where @speed is negotiated link speed in Mbits per second, and state
is the current NIC state (can be one of the following: "unknown",
"notpresent", "down", "lowerlayerdown","testing", "dormant", "up").
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
docs/schemas/basictypes.rng | 25 ++++++++++
docs/schemas/interface.rng | 1 +
src/conf/device_conf.c | 62 +++++++++++++++++++++++++
src/conf/device_conf.h | 27 ++++++++++-
src/conf/interface_conf.c | 11 ++++-
src/conf/interface_conf.h | 2 +
src/libvirt_private.syms | 4 ++
tests/interfaceschemadata/bridge-no-address.xml | 1 +
tests/interfaceschemadata/bridge.xml | 1 +
tests/interfaceschemadata/ethernet-dhcp.xml | 1 +
10 files changed, 133 insertions(+), 2 deletions(-)
diff --git a/docs/schemas/basictypes.rng b/docs/schemas/basictypes.rng
index 34ef613..5fe3a97 100644
--- a/docs/schemas/basictypes.rng
+++ b/docs/schemas/basictypes.rng
@@ -397,4 +397,29 @@
</optional>
</define>
+ <define name="link-speed-state">
+ <optional>
+ <element name="link">
+ <optional>
+ <attribute name="speed">
+ <ref name="unsignedInt"/>
+ </attribute>
+ </optional>
+ <optional>
+ <attribute name="state">
+ <choice>
+ <value>unknown</value>
+ <value>notpresent</value>
+ <value>down</value>
+ <value>lowerlayerdown</value>
+ <value>testing</value>
+ <value>dormant</value>
+ <value>up</value>
+ </choice>
+ </attribute>
+ </optional>
+ </element>
+ </optional>
+ </define>
+
</grammar>
diff --git a/docs/schemas/interface.rng b/docs/schemas/interface.rng
index 3984b63..8e2218d 100644
--- a/docs/schemas/interface.rng
+++ b/docs/schemas/interface.rng
@@ -41,6 +41,7 @@
<attribute name="address"><ref name="macAddr"/></attribute>
</element>
</optional>
+ <ref name="link-speed-state"/>
<!-- FIXME: Allow (some) ethtool options -->
</define>
diff --git a/src/conf/device_conf.c b/src/conf/device_conf.c
index 317fdf2..86157e6 100644
--- a/src/conf/device_conf.c
+++ b/src/conf/device_conf.c
@@ -38,6 +38,13 @@ VIR_ENUM_IMPL(virDeviceAddressPCIMulti,
"on",
"off")
+VIR_ENUM_IMPL(virInterfaceState,
+ VIR_INTERFACE_STATE_LAST,
+ "" /* value of zero means no state */,
+ "unknown", "notpresent",
+ "down", "lowerlayerdown",
+ "testing", "dormant", "up")
+
int virDevicePCIAddressIsValid(virDevicePCIAddressPtr addr)
{
/* PCI bus has 32 slots and 8 functions per slot */
@@ -142,3 +149,58 @@ virDevicePCIAddressEqual(virDevicePCIAddress *addr1,
}
return false;
}
+
+int
+virInterfaceLinkParseXML(xmlNodePtr node,
+ virInterfaceLinkPtr lnk)
+{
+ int ret = -1;
+ char *stateStr, *speedStr;
+ int state;
+
+ stateStr = virXMLPropString(node, "state");
+ speedStr = virXMLPropString(node, "speed");
+
+ if (stateStr) {
+ if ((state = virInterfaceStateTypeFromString(stateStr)) < 0) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("unknown link state: %s"),
+ stateStr);
+ goto cleanup;
+ }
+ lnk->state = state;
+ }
+
+ if (speedStr &&
+ virStrToLong_ul(speedStr, NULL, 10, &lnk->speed) < 0) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("Unable to parse link speed: %s"),
+ speedStr);
+ goto cleanup;
+ }
+
+ ret = 0;
+ cleanup:
+ VIR_FREE(stateStr);
+ VIR_FREE(speedStr);
+ return ret;
+}
+
+int
+virInterfaceLinkFormat(virBufferPtr buf,
+ const virInterfaceLink *lnk)
+{
+ if (!lnk->speed && !lnk->state) {
+ /* If there's nothing to format, return early. */
+ return 0;
+ }
+
+ virBufferAddLit(buf, "<link");
+ if (lnk->speed)
+ virBufferAsprintf(buf, " speed='%lu'", lnk->speed);
+ if (lnk->state)
+ virBufferAsprintf(buf, " state='%s'",
+ virInterfaceStateTypeToString(lnk->state));
+ virBufferAddLit(buf, "/>\n");
+ return 0;
+}
diff --git a/src/conf/device_conf.h b/src/conf/device_conf.h
index d66afd2..16500db 100644
--- a/src/conf/device_conf.h
+++ b/src/conf/device_conf.h
@@ -40,6 +40,21 @@ typedef enum {
VIR_DEVICE_ADDRESS_PCI_MULTI_LAST
} virDeviceAddressPCIMulti;
+VIR_ENUM_DECL(virDeviceAddressPCIMulti)
+
+typedef enum {
+ VIR_INTERFACE_STATE_UNKNOWN = 1,
+ VIR_INTERFACE_STATE_NOT_PRESENT,
+ VIR_INTERFACE_STATE_DOWN,
+ VIR_INTERFACE_STATE_LOWER_LAYER_DOWN,
+ VIR_INTERFACE_STATE_TESTING,
+ VIR_INTERFACE_STATE_DORMANT,
+ VIR_INTERFACE_STATE_UP,
+ VIR_INTERFACE_STATE_LAST
+} virInterfaceState;
+
+VIR_ENUM_DECL(virInterfaceState)
+
typedef struct _virDevicePCIAddress virDevicePCIAddress;
typedef virDevicePCIAddress *virDevicePCIAddressPtr;
struct _virDevicePCIAddress {
@@ -50,6 +65,13 @@ struct _virDevicePCIAddress {
int multi; /* enum virDomainDeviceAddressPCIMulti */
};
+typedef struct _virInterfaceLink virInterfaceLink;
+typedef virInterfaceLink *virInterfaceLinkPtr;
+struct _virInterfaceLink {
+ virInterfaceState state; /* link state */
+ unsigned long speed; /* link speed in Mb per second */
+};
+
int virDevicePCIAddressIsValid(virDevicePCIAddressPtr addr);
int virDevicePCIAddressParseXML(xmlNodePtr node,
@@ -62,7 +84,10 @@ int virDevicePCIAddressFormat(virBufferPtr buf,
bool virDevicePCIAddressEqual(virDevicePCIAddress *addr1,
virDevicePCIAddress *addr2);
+int virInterfaceLinkParseXML(xmlNodePtr node,
+ virInterfaceLinkPtr lnk);
-VIR_ENUM_DECL(virDeviceAddressPCIMulti)
+int virInterfaceLinkFormat(virBufferPtr buf,
+ const virInterfaceLink *lnk);
#endif /* __DEVICE_CONF_H__ */
diff --git a/src/conf/interface_conf.c b/src/conf/interface_conf.c
index 1f67446..2b3f699 100644
--- a/src/conf/interface_conf.c
+++ b/src/conf/interface_conf.c
@@ -705,12 +705,19 @@ virInterfaceDefParseXML(xmlXPathContextPtr ctxt, int parentIfType)
}
def->type = type;
switch (type) {
- case VIR_INTERFACE_TYPE_ETHERNET:
+ case VIR_INTERFACE_TYPE_ETHERNET: {
+ xmlNodePtr lnk;
+
if (virInterfaceDefParseName(def, ctxt) < 0)
goto error;
tmp = virXPathString("string(./mac/@address)", ctxt);
if (tmp != NULL)
def->mac = tmp;
+
+ lnk = virXPathNode("./link", ctxt);
+ if (lnk && virInterfaceLinkParseXML(lnk, &def->lnk) < 0)
+ goto error;
+
if (parentIfType == VIR_INTERFACE_TYPE_LAST) {
/* only recognize these in toplevel bond interfaces */
if (virInterfaceDefParseStartMode(def, ctxt) < 0)
@@ -721,6 +728,7 @@ virInterfaceDefParseXML(xmlXPathContextPtr ctxt, int parentIfType)
goto error;
}
break;
+ }
case VIR_INTERFACE_TYPE_BRIDGE: {
xmlNodePtr bridge;
@@ -1088,6 +1096,7 @@ virInterfaceDefDevFormat(virBufferPtr buf, const virInterfaceDef *def)
virInterfaceStartmodeDefFormat(buf, def->startmode);
if (def->mac != NULL)
virBufferAsprintf(buf, "<mac address='%s'/>\n", def->mac);
+ virInterfaceLinkFormat(buf, &def->lnk);
if (def->mtu != 0)
virBufferAsprintf(buf, "<mtu size='%d'/>\n", def->mtu);
virInterfaceProtocolDefFormat(buf, def);
diff --git a/src/conf/interface_conf.h b/src/conf/interface_conf.h
index b3c92b2..94c18ef 100644
--- a/src/conf/interface_conf.h
+++ b/src/conf/interface_conf.h
@@ -31,6 +31,7 @@
# include "internal.h"
# include "virutil.h"
# include "virthread.h"
+# include "device_conf.h"
/* There is currently 3 types of interfaces */
@@ -146,6 +147,7 @@ struct _virInterfaceDef {
char *name; /* interface name */
unsigned int mtu; /* maximum transmit size in byte */
char *mac; /* MAC address */
+ virInterfaceLink lnk; /* interface link info */
virInterfaceStartMode startmode; /* how it is started */
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 4c1f61c..8c184c9 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -83,6 +83,10 @@ virDevicePCIAddressEqual;
virDevicePCIAddressFormat;
virDevicePCIAddressIsValid;
virDevicePCIAddressParseXML;
+virInterfaceLinkFormat;
+virInterfaceLinkParseXML;
+virInterfaceStateTypeFromString;
+virInterfaceStateTypeToString;
# conf/domain_addr.h
diff --git a/tests/interfaceschemadata/bridge-no-address.xml b/tests/interfaceschemadata/bridge-no-address.xml
index 7757534..68b8c94 100644
--- a/tests/interfaceschemadata/bridge-no-address.xml
+++ b/tests/interfaceschemadata/bridge-no-address.xml
@@ -4,6 +4,7 @@
<bridge stp='off'>
<interface type='ethernet' name='eth0'>
<mac address='ab:bb:cc:dd:ee:ff'/>
+ <link speed='1000' state='up'/>
</interface>
<interface type='ethernet' name='eth1'>
</interface>
diff --git a/tests/interfaceschemadata/bridge.xml b/tests/interfaceschemadata/bridge.xml
index 2535edf..c865116 100644
--- a/tests/interfaceschemadata/bridge.xml
+++ b/tests/interfaceschemadata/bridge.xml
@@ -7,6 +7,7 @@
<bridge stp='off' delay='0.01'>
<interface type='ethernet' name='eth0'>
<mac address='ab:bb:cc:dd:ee:ff'/>
+ <link speed='10'/>
</interface>
<interface type='ethernet' name='eth1'>
</interface>
diff --git a/tests/interfaceschemadata/ethernet-dhcp.xml b/tests/interfaceschemadata/ethernet-dhcp.xml
index fe969df..c124372 100644
--- a/tests/interfaceschemadata/ethernet-dhcp.xml
+++ b/tests/interfaceschemadata/ethernet-dhcp.xml
@@ -1,6 +1,7 @@
<interface type='ethernet' name='eth0'>
<start mode='none'/>
<mac address='aa:bb:cc:dd:ee:ff'/>
+ <link state='down'/>
<mtu size='1492'/>
<protocol family='ipv4'>
<dhcp peerdns='no'/>
--
2.0.0
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