On 08/01/2011 07:57 PM, Roopa Prabhu wrote:
From: Roopa Prabhu<[email protected]>
This function looks at sysfs "net" directory to get the network interface
name associated with the pci device
Signed-off-by: Roopa Prabhu<[email protected]>
Signed-off-by: Christian Benvenuti<[email protected]>
Signed-off-by: David Wang<[email protected]>
---
src/util/pci.c | 42 ++++++++++++++++++++++++++++++++++++++++++
src/util/pci.h | 2 ++
2 files changed, 44 insertions(+), 0 deletions(-)
diff --git a/src/util/pci.c b/src/util/pci.c
index a79c164..d2deeef 100644
--- a/src/util/pci.c
+++ b/src/util/pci.c
@@ -1679,3 +1679,45 @@ int pciDeviceIsAssignable(pciDevice *dev,
return 1;
}
+
+/*
+ * This function returns the network device name
+ * of a pci device
+ */
+int
+pciDeviceGetNetName(char *device_link_sysfs_path, char **netname)
+{
+ char *pcidev_sysfs_net_path = NULL;
+ int ret = -1;
+ DIR *dir = NULL;
+ struct dirent *entry = NULL;
+
+ if (virBuildPath(&pcidev_sysfs_net_path, device_link_sysfs_path,
+ "net") == -1) {
+ virReportOOMError();
+ return -1;
+ }
+
+ dir = opendir(pcidev_sysfs_net_path);
+ if (dir == NULL)
+ goto out;
+
+ while ((entry = readdir(dir))) {
+ if (entry->d_name[0] == '.' ||
The above check makes the following one obsolete. If all entries with
first letter '.' can be skipped, then you could just keep the first one,
otherwise I'd also use !strcmp(entry->d_name, ".").
+ !strcmp(entry->d_name, ".."))
+ continue;
+
+ /* Assume a single directory entry */
+ *netname = strdup(entry->d_name);
+ ret = 0;
+ break;
+ }
+
+ if (dir)
+ closedir(dir);
Check for 'dir != NULL) is not necessary due to goto above.
+
+out:
+ VIR_FREE(pcidev_sysfs_net_path);
+
+ return ret;
+}
diff --git a/src/util/pci.h b/src/util/pci.h
index a351baf..fa25472 100644
--- a/src/util/pci.h
+++ b/src/util/pci.h
@@ -74,4 +74,6 @@ int pciDeviceIsAssignable(pciDevice *dev,
int strict_acs_check);
int pciWaitForDeviceCleanup(pciDevice *dev, const char *matcher);
+int pciDeviceGetNetName(char *device_link_sysfs_path, char **netname);
+
#endif /* __VIR_PCI_H__ */
Stefan
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