[libvirt] [RFC PATCH 15/28] conf: Add helper to get active functions of a slot of domain
In some cases it may be better to have a bitmap representing state of
individual functions rather than iterating the definition. The new helper
creates a bitmap representing the state from the domain definition.
Signed-off-by: Shivaprasad G Bhat <sbhat(a)linux.vnet.ibm.com>
---
src/conf/domain_conf.c | 25 +++++++++++++++++++++++++
src/conf/domain_conf.h | 3 +++
src/libvirt_private.syms | 1 +
3 files changed, 29 insertions(+)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 86fc275116..3deed8eb4d 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -16146,6 +16146,31 @@ virDomainHostdevFind(virDomainDefPtr def,
return *found ? i : -1;
}
+#define PCI_MAX_SLOT_FUNCTIONS 8
+/**
+ * virDomainDefHostdevGetPCIOnlineFunctionMap:
+ * @def: domain definition
+ * @aggrSlotIdx: slot aggregation index
+ * Returns a bitmap representing state of individual functions of a slot.
+ */
+virBitmapPtr
+virDomainDefHostdevGetPCIOnlineFunctionMap(virDomainDefPtr def,
+ int aggrSlotIdx)
+{
+ size_t i;
+ virBitmapPtr ret = NULL;
+
+ if (!(ret = virBitmapNew(PCI_MAX_SLOT_FUNCTIONS)))
+ return NULL;
+
+ for (i = 0; i < def->nhostdevs; i++) {
+ if (def->hostdevs[i]->info->aggregateSlotIdx == aggrSlotIdx)
+ ignore_value(virBitmapSetBit(ret,
def->hostdevs[i]->source.subsys.u.pci.addr.function));
+ }
+
+ return ret;
+}
+
static bool
virDomainDiskControllerMatch(int controller_type, int disk_bus)
{
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 61379e50fe..a3d686a5ca 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -3067,6 +3067,9 @@ virDomainHostdevDefPtr
virDomainHostdevRemove(virDomainDefPtr def, size_t i);
int virDomainHostdevFind(virDomainDefPtr def, virDomainHostdevDefPtr match,
virDomainHostdevDefPtr *found);
+virBitmapPtr virDomainDefHostdevGetPCIOnlineFunctionMap(virDomainDefPtr def,
+ int aggrSlotIdx);
+
virDomainGraphicsListenDefPtr
virDomainGraphicsGetListen(virDomainGraphicsDefPtr def, size_t i);
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index b092c240d8..b0e8f2ca61 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -278,6 +278,7 @@ virDomainDefHasMemballoon;
virDomainDefHasMemoryHotplug;
virDomainDefHasUSB;
virDomainDefHasVcpusOffline;
+virDomainDefHostdevGetPCIOnlineFunctionMap;
virDomainDefLifecycleActionAllowed;
virDomainDefMaybeAddController;
virDomainDefMaybeAddInput;