Add IPv6 support

Add ability to assign IPv6 to Ixia ports.
Add ability to create IPv6 traffic.
Add SendNs function.
Update set_traffic function:
- instead of using 2 functions with duplicate code to create
  traffic there is only 1 now.
- the user can specify `type: ipv6` to create IPv6 traffic.
- the user can also specify `type: ethernet | raw` and
  `protocol: ipv6` to create ethernet/raw traffic with
  IPv6 header.
- old behavior is preserved.

Signed-off-by: Serhiy Boiko <serhiy.boiko@plvision.eu>

DentOS_Framework/DentOsTestbed/src/dent_os_testbed/utils/test_utils/tgen_utils.py

@@ -102,6 +102,7 @@ def tgen_utils_dev_groups_from_config(config):
             "gw": peer ip,
             "plen": prefix length,
             "vlan": vlan id to be configured (optional),
+            "version": [ ipv4 | ipv6 ] (default is ipv4)
         },
         ...
     ]
@@ -117,6 +118,7 @@ def tgen_utils_dev_groups_from_config(config):
             "gw": el["gw"],
             "plen": el["plen"],
             "vlan": el.get("vlan", None),
+            "version": el.get("version", "ipv4"),
         })
     return dev_groups
 
@@ -743,3 +745,33 @@ async def tgen_utils_send_arp(device, config):
     if out[0][device.host_name]["rc"] != 0:
         device.applog.warning(f"Some arps did not reach their destination\n{out}")
     return out[0][device.host_name]["result"]
+
+
+async def tgen_utils_send_ns(device, config):
+    """
+    - Sends NS packets from TG ports to DUT
+    - Expects config to be a list of dicts:
+    [
+        {
+            "ixp": tgen port,
+            "src_ip": tgen port ip (optional),
+        },
+        ...
+    ]
+    - returns a list of dicts for each NS sent
+    [
+        {
+            "success": True or False,
+            "port": tg_port,
+            "src_ip": tg_port ip,
+        },
+        ...
+    ]
+    """
+    out = await TrafficGen.send_ns(input_data=[{device.host_name: [
+        {"port": ns["ixp"], "src_ip": ns["src_ip"] if "src_ip" in ns else None}
+        for ns in config
+    ]}])
+    if out[0][device.host_name]["rc"] != 0:
+        device.applog.warning(f"Some NSs did not reach their destination\n{out}")
+    return out[0][device.host_name]["result"]

DentOS_Framework/DentOsTestbedLib/gen/model/dent/traffic/traffic.yaml

@@ -39,7 +39,8 @@
            'load_config', 'save_config',
            'set_traffic', 'start_traffic', 'stop_traffic', 'get_stats', 'clear_stats',
            'start_protocols', 'stop_protocols', 'set_protocol', 'get_protocol_stats',
-           'clear_protocol_stats', 'send_arp', 'send_ping', 'clear_traffic', 'get_drilldown_stats']
+           'clear_protocol_stats', 'send_arp', 'send_ns', 'send_ping', 'clear_traffic',
+           'get_drilldown_stats']
     members:
     - name: client_addr
       type: ip_addr_t

DentOS_Framework/DentOsTestbedLib/gen/model/traffic/ixia/ixia.yaml

@@ -21,6 +21,7 @@
           clear_protocol_stats - [protocols]
           send_ping - [port, dst_ip, src_ip]
           send_arp - [port, src_ip]
+          send_ns - [port, src_ip]
           clear_traffic - [traffic_names]
      implements: "dent:traffic:traffic_gen"
      platforms: ['ixnetwork']
@@ -69,9 +70,10 @@
         desc: |
          - IxiaClient
            send_ping - [port, dst_ip, src_ip]
-      - name: send_arp
-        apis: ['send_arp']
+      - name: resolve_neighbor
+        apis: ['send_arp', 'send_ns']
         params: ['ports', 'src_ip']
         desc: |
          - IxiaClient
            send_arp - [port, src_ip]
+           send_ns - [port, src_ip]

DentOS_Framework/DentOsTestbedLib/src/dent_os_testbed/lib/traffic/ixnetwork/ixnetwork_ixia_client.py

@@ -24,6 +24,7 @@ class IxnetworkIxiaClient(TestLibObject):
             clear_protocol_stats - [protocols]
             send_ping - [port, dst_ip, src_ip]
             send_arp - [port, src_ip]
+            send_ns - [port, src_ip]
             clear_traffic - [traffic_names]
         
     """
@@ -72,13 +73,13 @@ def run_send_ping(self, device, command, *argv, **kwarg):
     def parse_send_ping(self, command, output, *argv, **kwarg):
         raise NotImplementedError
 
-    def format_send_arp(self, command, *argv, **kwarg):
+    def format_resolve_neighbor(self, command, *argv, **kwarg):
         raise NotImplementedError
 
-    def run_send_arp(self, device, command, *argv, **kwarg):
+    def run_resolve_neighbor(self, device, command, *argv, **kwarg):
         raise NotImplementedError
 
-    def parse_send_arp(self, command, output, *argv, **kwarg):
+    def parse_resolve_neighbor(self, command, output, *argv, **kwarg):
         raise NotImplementedError
 
     def format_command(self, command, *argv, **kwarg):
@@ -97,8 +98,8 @@ def format_command(self, command, *argv, **kwarg):
         if command in ['send_ping']:
             return self.format_send_ping(command, *argv, **kwarg)
 
-        if command in ['send_arp']:
-            return self.format_send_arp(command, *argv, **kwarg)
+        if command in ['send_arp', 'send_ns']:
+            return self.format_resolve_neighbor(command, *argv, **kwarg)
 
 
         raise NameError("Cannot find command "+command)
@@ -119,8 +120,8 @@ def run_command(self, device_obj, command, *argv, **kwarg):
         if command in ['send_ping']:
             return self.run_send_ping(device_obj, command, *argv, **kwarg)
 
-        if command in ['send_arp']:
-            return self.run_send_arp(device_obj, command, *argv, **kwarg)
+        if command in ['send_arp', 'send_ns']:
+            return self.run_resolve_neighbor(device_obj, command, *argv, **kwarg)
 
 
         print (len(command))
@@ -142,8 +143,8 @@ def parse_output(self, command, output, *argv, **kwarg):
         if command in ['send_ping']:
             return self.parse_send_ping(command, output, *argv, **kwarg)
 
-        if command in ['send_arp']:
-            return self.parse_send_arp(command, output, *argv, **kwarg)
+        if command in ['send_arp', 'send_ns']:
+            return self.parse_resolve_neighbor(command, output, *argv, **kwarg)
 
 
         raise NameError("Cannot find command "+command)