[PATCH 1/3] Add FCoE support to storage/udev.py

[Hans de Goede <hdegoede redhat com>]

Add the ability to identify if a disk is an FCoE device and to
get the identifier of the disk and the name of the NIC used to
connect to an FCoE disk
---
 storage/udev.py |   27 +++++++++++++++++++++++++++
 1 files changed, 27 insertions(+), 0 deletions(-)

diff --git a/storage/udev.py b/storage/udev.py
index af3ee12..d057cf2 100644
--- a/storage/udev.py
+++ b/storage/udev.py
@@ -386,3 +386,30 @@ def udev_device_get_iscsi_port(info):
     path_components = info["ID_PATH"].split("-")
 
     return path_components[1].split(":")[1]
+
+# fcoe disks have ID_PATH in the form of:
+# pci-eth#-fc-${id}
+# fcoe parts look like this:
+# pci-eth#-fc-${id}-part#
+def udev_device_is_fcoe(info):
+    try:
+        path_components = info["ID_PATH"].split("-")
+
+        if info["ID_BUS"] == "scsi" and len(path_components) >= 4 and \
+           path_components[0] == "pci" and path_components[2] == "fc" and \
+           path_components[1][0:3] == "eth":
+            return True
+    except KeyError:
+        pass
+
+    return False
+
+def udev_device_get_fcoe_nic(info):
+    path_components = info["ID_PATH"].split("-")
+
+    return path_components[1]
+
+def udev_device_get_fcoe_identifier(info):
+    path_components = info["ID_PATH"].split("-")
+
+    return path_components[3]
-- 
1.6.2.2