| Klement Sekera | f62ae12 | 2016-10-11 11:47:09 +0200 | [diff] [blame] | 1 | from scapy.layers.l2 import Ether, Dot1Q |
| 2 | from abc import abstractmethod, ABCMeta |
| 3 | from vpp_interface import VppInterface |
| 4 | |
| 5 | |
| 6 | class VppSubInterface(VppInterface): |
| 7 | __metaclass__ = ABCMeta |
| 8 | |
| 9 | @property |
| 10 | def parent(self): |
| 11 | """Parent interface for this sub-interface""" |
| 12 | return self._parent |
| 13 | |
| 14 | @property |
| 15 | def sub_id(self): |
| 16 | """Sub-interface ID""" |
| 17 | return self._sub_id |
| 18 | |
| 19 | def __init__(self, test, parent, sub_id): |
| 20 | self._test = test |
| 21 | self._parent = parent |
| 22 | self._parent.add_sub_if(self) |
| 23 | self._sub_id = sub_id |
| 24 | |
| 25 | @abstractmethod |
| 26 | def create_arp_req(self): |
| 27 | pass |
| 28 | |
| 29 | @abstractmethod |
| 30 | def create_ndp_req(self): |
| 31 | pass |
| 32 | |
| 33 | def resolve_arp(self): |
| 34 | super(VppSubInterface, self).resolve_arp(self.parent) |
| 35 | |
| 36 | def resolve_ndp(self): |
| 37 | super(VppSubInterface, self).resolve_ndp(self.parent) |
| 38 | |
| 39 | @abstractmethod |
| 40 | def add_dot1_layer(self, pkt): |
| 41 | pass |
| 42 | |
| 43 | |
| 44 | class VppDot1QSubint(VppSubInterface): |
| 45 | |
| 46 | @property |
| 47 | def vlan(self): |
| 48 | """VLAN tag""" |
| 49 | return self._vlan |
| 50 | |
| 51 | def __init__(self, test, parent, sub_id, vlan=None): |
| 52 | if vlan is None: |
| 53 | vlan = sub_id |
| 54 | super(VppDot1QSubint, self).__init__(test, parent, sub_id) |
| 55 | self._vlan = vlan |
| 56 | r = self.test.vapi.create_vlan_subif(parent.sw_if_index, self.vlan) |
| 57 | self._sw_if_index = r.sw_if_index |
| 58 | self.post_init_setup() |
| 59 | |
| 60 | def create_arp_req(self): |
| 61 | packet = VppInterface.create_arp_req(self) |
| 62 | return self.add_dot1_layer(packet) |
| 63 | |
| 64 | def create_ndp_req(self): |
| 65 | packet = VppInterface.create_ndp_req(self) |
| 66 | return self.add_dot1_layer(packet) |
| 67 | |
| 68 | def add_dot1_layer(self, packet): |
| 69 | payload = packet.payload |
| 70 | packet.remove_payload() |
| 71 | packet.add_payload(Dot1Q(vlan=self.sub_id) / payload) |
| 72 | return packet |
| 73 | |
| 74 | def remove_dot1_layer(self, packet): |
| 75 | payload = packet.payload |
| 76 | self.test.instance().assertEqual(type(payload), Dot1Q) |
| 77 | self.test.instance().assertEqual(payload.vlan, self.vlan) |
| 78 | payload = payload.payload |
| 79 | packet.remove_payload() |
| 80 | packet.add_payload(payload) |
| 81 | return packet |
| 82 | |
| 83 | |
| 84 | class VppDot1ADSubint(VppSubInterface): |
| 85 | |
| 86 | @property |
| 87 | def outer_vlan(self): |
| 88 | """Outer VLAN tag""" |
| 89 | return self._outer_vlan |
| 90 | |
| 91 | @property |
| 92 | def inner_vlan(self): |
| 93 | """Inner VLAN tag""" |
| 94 | return self._inner_vlan |
| 95 | |
| 96 | def __init__(self, test, parent, sub_id, outer_vlan, inner_vlan): |
| 97 | super(VppDot1ADSubint, self).__init__(test, parent, sub_id) |
| 98 | self.DOT1AD_TYPE = 0x88A8 |
| 99 | self.DOT1Q_TYPE = 0x8100 |
| 100 | self._outer_vlan = outer_vlan |
| 101 | self._inner_vlan = inner_vlan |
| 102 | r = self.test.vapi.create_subif( |
| 103 | parent.sw_if_index, |
| 104 | self.sub_id, |
| 105 | self.outer_vlan, |
| 106 | self.inner_vlan, |
| 107 | dot1ad=1, |
| 108 | two_tags=1, |
| 109 | exact_match=1) |
| 110 | self._sw_if_index = r.sw_if_index |
| 111 | self.post_init_setup() |
| 112 | |
| 113 | def create_arp_req(self): |
| 114 | packet = VppInterface.create_arp_req(self) |
| 115 | return self.add_dot1_layer(packet) |
| 116 | |
| 117 | def create_ndp_req(self): |
| 118 | packet = VppInterface.create_ndp_req(self) |
| 119 | return self.add_dot1_layer(packet) |
| 120 | |
| 121 | def add_dot1_layer(self, packet): |
| 122 | payload = packet.payload |
| 123 | packet.remove_payload() |
| 124 | packet.add_payload(Dot1Q(vlan=self.outer_vlan) / |
| 125 | Dot1Q(vlan=self.inner_vlan) / payload) |
| 126 | packet.type = self.DOT1AD_TYPE |
| 127 | return packet |
| 128 | |
| 129 | def remove_dot1_layer(self, packet): |
| 130 | self.test.instance().assertEqual(type(packet), Ether) |
| 131 | self.test.instance().assertEqual(packet.type, self.DOT1AD_TYPE) |
| 132 | packet.type = self.DOT1Q_TYPE |
| 133 | packet = Ether(str(packet)) |
| 134 | payload = packet.payload |
| 135 | self.test.instance().assertEqual(type(payload), Dot1Q) |
| 136 | self.test.instance().assertEqual(payload.vlan, self.outer_vlan) |
| 137 | payload = payload.payload |
| 138 | self.test.instance().assertEqual(type(payload), Dot1Q) |
| 139 | self.test.instance().assertEqual(payload.vlan, self.inner_vlan) |
| 140 | payload = payload.payload |
| 141 | packet.remove_payload() |
| 142 | packet.add_payload(payload) |
| 143 | return packet |