[libvirt] [PATCH 3/5] Adding functions virNetDevGetVirtualFunctions and virNetDevGetNetName virNetDevGetVirtualFunctions: Gets the BDF of all the Virtual Functions given a physical function virNetDevGetNetName: Gets the interface name of the PCI Device.
---
src/util/virnetdev.c | 89 ++++++++++++++++++++++++++++++++++++++++++++++++++
src/util/virnetdev.h | 10 ++++++
2 files changed, 99 insertions(+), 0 deletions(-)
diff --git a/src/util/virnetdev.c b/src/util/virnetdev.c
index 86196a1..d07d8fa 100644
--- a/src/util/virnetdev.c
+++ b/src/util/virnetdev.c
@@ -968,6 +968,76 @@ virNetDevSysfsDeviceFile(char **pf_sysfs_device_link, const char
*ifname,
}
/**
+ * virNetDevGetVirtualFunctions:
+ *
+ * @pfname : name of the physical function interface name
+ * @virt_fns: array that will hold the pointers to the virtual_functions
+ * @num_virt_fns: number of virtual functions
+ *
+ * Returns 0 on success and -1 on failure
+ */
+
+int
+virNetDevGetVirtualFunctions(const char *pfname,
+ struct pci_config_address ***virt_fns,
+ unsigned int *num_virt_fns)
+{
+ int ret = -1;
+ char *pf_sysfs_device_link = NULL;
+
+
+ if (virNetDevSysfsFile(&pf_sysfs_device_link, pfname, "device") <
0)
+ return ret;
+
+ if (pciGetVirtualFunctions(pf_sysfs_device_link, virt_fns,
+ num_virt_fns) < 0)
+ goto out;
+ ret = 0;
+
+out:
+ VIR_FREE(pf_sysfs_device_link);
+ return ret;
+}
+
+/**
+ * virNetDevGetNetName:
+ *
+ * @vf : pci address (BDF) of the Virtual Function
+ * @vfname: interface name of the virtual function returned by this function
+ *
+ * Returns 0 on success and -1 on failure
+ */
+
+int
+virNetDevGetNetName(struct pci_config_address *vf, char **vfname)
+{
+ int ret = -1;
+ pciDevice *dev = NULL;
+ char *pci_sysfs_device_link = NULL;
+
+ dev = pciGetDevice(vf->domain, vf->bus, vf->slot, vf->function);
+ if (dev != NULL) {
+ if (pciSysfsFile(&pci_sysfs_device_link, dev->name) < 0) {
+ virReportSystemError(ENOSYS, "%s",
+ _("Failed to get PCI SYSFS file"));
+ goto out;
+ }
+
+ if (pciDeviceNetName(pci_sysfs_device_link, vfname) < 0) {
+ virReportSystemError(ENOSYS, "%s",
+ _("Failed to get interface name of the VF"));
+ goto out;
+ }
+ }
+ ret = 0;
+
+out:
+ VIR_FREE(pci_sysfs_device_link);
+ pciFreeDevice(dev);
+ return ret;
+}
+
+/**
* virNetDevIsVirtualFunction:
* @ifname : name of the interface
*
@@ -1055,6 +1125,25 @@ virNetDevGetPhysicalFunction(const char *ifname, char **pfname)
}
#else /* !__linux__ */
int
+virNetDevGetVirtualFunctions(const char *pfname ATTRIBUTE_UNUSED,
+ struct pci_config_address ***virt_fns ATTRIBUTE_UNUSED,
+ unsigned int *num_virt_fns ATTRIBUTE_UNUSED)
+{
+ virReportSystemError(ENOSYS, "%s",
+ _("Unable to get virtual functions on this
platfornm"));
+ return -1;
+}
+
+int
+virNetDevGetNetName(struct pci_config_address *vf ATTRIBUTE_UNUSED,
+ char **vfname ATTRIBUTE_UNUSED)
+{
+ virReportSystemError(ENOSYS, "%s",
+ _("Unable to get Device name on this platfornm"));
+ return -1;
+}
+
+int
virNetDevIsVirtualFunction(const char *ifname ATTRIBUTE_UNUSED)
{
virReportSystemError(ENOSYS, "%s",
diff --git a/src/util/virnetdev.h b/src/util/virnetdev.h
index 13ba1da..4d1573a 100644
--- a/src/util/virnetdev.h
+++ b/src/util/virnetdev.h
@@ -24,6 +24,7 @@
# define __VIR_NETDEV_H__
# include "virsocketaddr.h"
+# include "pci.h"
int virNetDevExists(const char *brname)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
@@ -99,4 +100,13 @@ int virNetDevGetVirtualFunctionIndex(const char *pfname, const char
*vfname,
int virNetDevGetPhysicalFunction(const char *ifname, char **pfname)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
+int virNetDevGetVirtualFunctions(const char *pfname,
+ struct pci_config_address ***virt_fns,
+ unsigned int *num_virt_fns)
+ ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
+ ATTRIBUTE_RETURN_CHECK;
+
+int virNetDevGetNetName(struct pci_config_address *vf, char **vfname)
+ ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
+
#endif /* __VIR_NETDEV_H__ */
--
1.7.4.4