[dts] [PATCH] fix bug that read_cache option not work

[Yong Liu <yong.liu@intel.com>]

From: Marvin Liu <yong.liu@intel.com>

Cache file only can save string object, so skip save port net device object.
In prerequisties function, we will instantiate net device and save it into
ports_info structure.
Cache file now saved in output folder.

Signed-off-by: Marvin Liu <yong.liu@intel.com>

diff --git a/framework/dts.py b/framework/dts.py
index 2e67e40..6d8b950 100644
--- a/framework/dts.py
+++ b/framework/dts.py
@@ -235,7 +235,8 @@ def dts_crbs_init(crbInst, skip_setup, read_cache, project, base_dir, nic, virtt
     """
     global dut
     global tester
-    serializer.set_serialized_filename('.%s.cache' % crbInst['IP'])
+    serializer.set_serialized_filename(FOLDERS['Output'] +
+                                       '/.%s.cache' % crbInst['IP'])
     serializer.load_from_file()
 
     dut = get_project_obj(project, Dut, crbInst, serializer)
diff --git a/framework/dut.py b/framework/dut.py
index 8c83075..0f523c0 100644
--- a/framework/dut.py
+++ b/framework/dut.py
@@ -44,8 +44,6 @@ from virt_resource import VirtResource
 from utils import RED
 
 
-
-
 class Dut(Crb):
 
     """
@@ -275,7 +273,6 @@ class Dut(Crb):
             if total_huge_pages != arch_huge_pages:
                 self.set_huge_pages(arch_huge_pages)
 
-
         self.mount_huge_pages()
         self.hugepage_path = self.strip_hugepage_path()
 
@@ -541,19 +538,20 @@ class Dut(Crb):
             port_info['ipv6'] = ipv6
 
     def load_serializer_ports(self):
-        self.ports_info = []
         cached_ports_info = self.serializer.load(self.PORT_INFO_CACHE_KEY)
         if cached_ports_info is None:
             return
-        for port in cached_ports_info:
-            self.ports_info.append({'pci': port['pci'], 'type': port['type'],
-                                    'numa': port['numa']})
+
+        self.ports_info = cached_ports_info
 
     def save_serializer_ports(self):
         cached_ports_info = []
         for port in self.ports_info:
-            cached_ports_info.append({'pci': port['pci'], 'type': port['type'],
-                                      'numa': port['numa']})
+            port_info = {}
+            for key in port.keys():
+                if type(port[key]) is str:
+                    port_info[key] = port[key]
+            cached_ports_info.append(port_info)
         self.serializer.save(self.PORT_INFO_CACHE_KEY, cached_ports_info)
 
     def scan_ports(self):
@@ -562,11 +560,35 @@ class Dut(Crb):
         """
         if self.read_cache:
             self.load_serializer_ports()
+            self.scan_ports_cached()
 
         if not self.read_cache or self.ports_info is None:
             self.scan_ports_uncached()
             self.save_serializer_ports()
 
+    def scan_ports_cached(self):
+        """
+        Scan cached ports, instantiate tester port
+        """
+        scan_ports_cached = getattr(self, 'scan_ports_cached_%s' % self.get_os_type())
+        return scan_ports_cached()
+
+    def scan_ports_cached_linux(self):
+        """
+        Scan Linux ports and instantiate tester port
+        """
+        if self.ports_info is None:
+            return
+
+        for port_info in self.ports_info:
+            port = NetDevice(self, port_info['pci'], port_info['type'])
+            intf = port.get_interface_name()
+
+            self.logger.info("DUT cached: [000:%s %s] %s" % (port_info['pci'],
+                             port_info['type'], intf))
+
+            port_info['port'] = port
+
     def scan_ports_uncached(self):
         """
         Scan ports and collect port's pci id, mac adress, ipv6 address.
@@ -700,7 +722,6 @@ class Dut(Crb):
     def get_vm_core_list(self):
         return VMCORELIST[self.crb['VM CoreList']]
 
-
     def load_portconf(self):
         """
         Load port configurations for ports_info. If manually configured infor
diff --git a/framework/tester.py b/framework/tester.py
index ce136e4..35581c8 100644
--- a/framework/tester.py
+++ b/framework/tester.py
@@ -65,7 +65,8 @@ class Tester(Crb):
                                      self.NAME, self.get_password())
         self.session.init_log(self.logger)
         self.alt_session = SSHConnection(self.get_ip_address(),
-                                         self.NAME + '_alt', self.get_password())
+                                         self.NAME + '_alt',
+                                         self.get_password())
         self.alt_session.init_log(self.logger)
 
         self.bgProcIsRunning = False
@@ -199,6 +200,9 @@ class Tester(Crb):
         """
         Restore Linux interfaces.
         """
+        if self.skip_setup:
+            return
+
         self.send_expect("modprobe igb", "# ", 20)
         self.send_expect("modprobe ixgbe", "# ", 20)
         self.send_expect("modprobe e1000e", "# ", 20)
@@ -218,7 +222,6 @@ class Tester(Crb):
         sleep(2)
 
     def load_serializer_ports(self):
-        self.ports_info = []
         cached_ports_info = self.serializer.load(self.PORT_INFO_CACHE_KEY)
         if cached_ports_info is None:
             return
@@ -243,6 +246,7 @@ class Tester(Crb):
         """
         if self.read_cache:
             self.load_serializer_ports()
+            self.scan_ports_cached()
 
         if not self.read_cache or self.ports_info is None:
             self.scan_ports_uncached()
@@ -253,6 +257,21 @@ class Tester(Crb):
         for port_info in self.ports_info:
             self.logger.info(port_info)
 
+    def scan_ports_cached(self):
+        if self.ports_info is None:
+            return
+
+        for port_info in self.ports_info:
+            if port_info['type'] == 'ixia':
+                continue
+
+            port = NetDevice(self, port_info['pci'], port_info['type'])
+            intf = port.get_interface_name()
+
+            self.logger.info("Tester cached: [000:%s %s] %s" % (
+                             port_info['pci'], port_info['type'], intf))
+            port_info['port'] = port
+
     def scan_ports_uncached(self):
         """
         Return tester port pci/mac/interface information.
-- 
1.9.3