
# Copyright 2017-present Open Networking Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


"""
The following tests are being done here
1) PacketInSrcMacMiss
2) VlanSupport
3) L2FloodQinQ
4) L2FloodTagged
5) L2Flood Tagged Unknown Src
6) L2 Unicast Tagged
7) MTU 1500
8) MTU 4100
9) MTU 4500
10) L3UnicastTagged
11) L3VPNMPLS
12) MPLS Termination
"""

from oftest import config
import logging
import oftest.base_tests as base_tests
import ofp
from oftest.testutils import *
from accton_util import *

class VlanSupport(base_tests.SimpleDataPlane):
    """
    Test L2 forwarding of both, untagged and double-tagged packets
    Sends a packet and expects the same packet on the other port
    Repeats for double tagged
    """
    def runTest(self):
        delete_all_flows(self.controller)
        delete_all_groups(self.controller)
        ports = sorted(config["port_map"].keys())
        # group table
        # set up untag groups for each port
        add_l2_interface_group(self.controller, config["port_map"].keys(), 4093, False, 1)
        for port in ports:
            add_one_vlan_table_flow(self.controller, port, 4093, flag=VLAN_TABLE_FLAG_ONLY_BOTH)
            group_id = encode_l2_interface_group_id(4093, port)
            add_bridge_flow(self.controller, [0x00, 0x12, 0x34, 0x56, 0x78, port], 4093, group_id, True)
            #add flow match for vlan 300
            add_one_l2_interface_group(self.controller, port, 300, True, False)
            add_one_vlan_table_flow(self.controller, port, 300, flag=VLAN_TABLE_FLAG_ONLY_TAG)
        msg=add_l2_flood_group(self.controller, ports, 300, 1)
        add_bridge_flow(self.controller, None, 300, msg.group_id, True)
        msg=add_l2_flood_group(self.controller, ports, 4093, 1)
        add_bridge_flow(self.controller, None, 4093, msg.group_id, True)
        do_barrier(self.controller)

        for out_port in ports:
            # change dest based on port number
            mac_dst= '00:12:34:56:78:%02X' % out_port

            for in_port in ports:
                if in_port == out_port:
                    continue
                # change source based on port number to avoid packet-ins from learning
                mac_src= '00:12:34:56:78:%02X' % in_port
                #sends an untagged packet
                parsed_pkt = simple_tcp_packet(dl_vlan_enable=False, vlan_vid=4093, eth_dst=mac_dst, eth_src=mac_src)
                pkt = str(parsed_pkt)
                logging.info("OutputExact test, ports %d to %d", in_port, out_port)
                self.dataplane.send(in_port, pkt)

                for ofport in ports:
                    if ofport is out_port:
                        verify_packet(self, pkt, ofport)
                    else:
                        verify_no_packet(self, pkt, ofport)

                verify_no_other_packets(self)
                # sends a double tagged packet
                parsed_pkt = simple_tcp_packet_two_vlan(pktlen=108, out_dl_vlan_enable=True, out_vlan_vid=300,
                                                in_dl_vlan_enable=True, in_vlan_vid=10, eth_dst='00:12:34:56:78:9a', eth_src=mac_src)
                pkt = str(parsed_pkt)
                logging.info("OutputExact test, ports %d to %d", in_port, out_port)
                self.dataplane.send(in_port, pkt)

                for ofport in ports:
                    if ofport is in_port:
                        verify_no_packet(self, pkt, ofport)
                    else:
                        verify_packet(self, pkt, ofport)

                verify_no_other_packets(self)