usertools: add --status-dev option to devbind

Script displays status for all device types and output is much
longer than it used to be. This makes harder to read script output.

This patch adds new --status-dev argument to the script to select
a device group to display status.

Supported device groups:
net
crypto
event
mempool

Sample usage:
./usertools/dpdk-devbind.py --status-dev mempool

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/usertools/dpdk-devbind.py b/usertools/dpdk-devbind.py
index 1dc1065..7dc8e48 100755 (executable)
--- a/usertools/dpdk-devbind.py
+++ b/usertools/dpdk-devbind.py
@@ -86,7 +86,8 @@ Options:
         Display usage information and quit
 
     -s, --status:
-        Print the current status of all known network and crypto devices.
+        Print the current status of all known network, crypto, event
+        and mempool devices.
         For each device, it displays the PCI domain, bus, slot and function,
         along with a text description of the device. Depending upon whether the
         device is being used by a kernel driver, the igb_uio driver, or no
@@ -99,6 +100,10 @@ Options:
         status display will always occur after the other operations have taken
         place.
 
+    --status-dev:
+        Print the status of given device group. Supported device groups are:
+        "net", "crypto", "event" and "mempool"
+
     -b driver, --bind=driver:
         Select the driver to use or \"none\" to unbind the device
 
@@ -119,6 +124,9 @@ Examples:
 To display current device status:
         %(argv0)s --status
 
+To display current network device status:
+        %(argv0)s --status-dev net
+
 To bind eth1 from the current driver and move to use igb_uio
         %(argv0)s --bind=igb_uio eth1
 
@@ -598,16 +606,24 @@ def show_status():
     Displays to the user what devices are bound to the igb_uio driver, the
     kernel driver or to no driver'''
 
-    show_device_status(network_devices, "Network")
-    show_device_status(crypto_devices, "Crypto")
-    show_device_status(eventdev_devices, "Eventdev")
-    show_device_status(mempool_devices, "Mempool")
+    if status_dev == "net" or status_dev == "all":
+        show_device_status(network_devices, "Network")
+
+    if status_dev == "crypto" or status_dev == "all":
+        show_device_status(crypto_devices, "Crypto")
+
+    if status_dev == "event" or status_dev == "all":
+        show_device_status(eventdev_devices, "Eventdev")
+
+    if status_dev == "mempool" or status_dev == "all":
+        show_device_status(mempool_devices, "Mempool")
 
 def parse_args():
     '''Parses the command-line arguments given by the user and takes the
     appropriate action for each'''
     global b_flag
     global status_flag
+    global status_dev
     global force_flag
     global args
     if len(sys.argv) <= 1:
@@ -616,8 +632,8 @@ def parse_args():
 
     try:
         opts, args = getopt.getopt(sys.argv[1:], "b:us",
-                                   ["help", "usage", "status", "force",
-                                    "bind=", "unbind"])
+                                   ["help", "usage", "status", "status-dev=",
+                                    "force", "bind=", "unbind", ])
     except getopt.GetoptError as error:
         print(str(error))
         print("Run '%s --usage' for further information" % sys.argv[0])
@@ -627,8 +643,12 @@ def parse_args():
         if opt == "--help" or opt == "--usage":
             usage()
             sys.exit(0)
+        if opt == "--status-dev":
+            status_flag = True
+            status_dev = arg
         if opt == "--status" or opt == "-s":
             status_flag = True
+            status_dev = "all"
         if opt == "--force":
             force_flag = True
         if opt == "-b" or opt == "-u" or opt == "--bind" or opt == "--unbind":