oeqa/runtime: Add debugging if networking fails

If networking fails, we can get useful informaiton over the serial connection. Add
this fallback code so that any issues can be more easily debugged by showing the
host and target networking states.

(From OE-Core rev: 3291f9d07ecfe7d3301dc914f5e6a80577cf1d5d)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/runtime/case.py

@@ -4,6 +4,9 @@
 # SPDX-License-Identifier: MIT
 #
 
+import os
+import subprocess
+import time
 from oeqa.core.case import OETestCase
 from oeqa.utils.package_manager import install_package, uninstall_package
 
@@ -18,3 +21,16 @@ class OERuntimeTestCase(OETestCase):
     def tearDown(self):
         super(OERuntimeTestCase, self).tearDown()
         uninstall_package(self)
+
+def run_network_serialdebug(runner):
+    status, output = runner.run_serial("ip addr")
+    print("ip addr on target: %s %s" % (output, status))
+    status, output = runner.run_serial("ping -c 1 %s" % self.target.server_ip)
+    print("ping on target for %s: %s %s" % (self.target.server_ip, output, status))
+    status, output = runner.run_serial("ping -c 1 %s" % self.target.ip)
+    print("ping on target for %s: %s %s" % (self.target.ip, output, status))
+    # Have to use a full path for netstat which isn't in HOSTTOOLS
+    subprocess.call(["/usr/bin/netstat", "-tunape"])
+    subprocess.call(["/usr/bin/netstat", "-ei"])
+    subprocess.call(["ps", "-awx"], shell=True)
+    print("PID: %s %s" % (str(os.getpid()), time.time()))