Initial commit.
Change-Id: If7c53df6650cbde9ce6a5be9d581a6395ece5ca9
diff --git a/omci_messages.py b/omci_messages.py
new file mode 100644
index 0000000..90a0cea
--- /dev/null
+++ b/omci_messages.py
@@ -0,0 +1,300 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# 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.
+#
+import structlog
+from enum import Enum
+from scapy.fields import ByteField, StrFixedLenField, ConditionalField, Field
+from scapy.fields import ShortField
+from scapy.packet import Packet
+
+from voltha.extensions.omci.omci_defs import AttributeAccess
+from voltha.extensions.omci.omci_entities import entity_id_to_class_map
+
+
+log = structlog.get_logger()
+
+
+class OmciData(Field):
+
+ __slots__ = Field.__slots__ + ['_entity_class']
+
+ def __init__(self, name, entity_class="entity_class"):
+ Field.__init__(self, name=name, default=None, fmt='s')
+ self._entity_class = entity_class
+
+ def addfield(self, pkt, s, val):
+ class_id = getattr(pkt, self._entity_class)
+ entity_class = entity_id_to_class_map.get(class_id)
+ for attribute in entity_class.attributes:
+ if AttributeAccess.SetByCreate not in attribute._access:
+ continue
+ if attribute._fld.name == 'managed_entity_id':
+ continue
+ fld = attribute._fld
+ s = fld.addfield(pkt, s, val.get(fld.name, fld.default))
+ return s
+
+ def getfield(self, pkt, s):
+ """Extract an internal value from a string"""
+ class_id = getattr(pkt, self._entity_class)
+ entity_class = entity_id_to_class_map.get(class_id)
+ data = {}
+ for attribute in entity_class.attributes:
+ if AttributeAccess.SetByCreate not in attribute._access:
+ continue
+ if attribute._fld.name == 'managed_entity_id':
+ continue
+ fld = attribute._fld
+ s, value = fld.getfield(pkt, s)
+ data[fld.name] = value
+ return s, data
+
+
+class OmciMaskedData(Field):
+
+ __slots__ = Field.__slots__ + ['_entity_class', '_attributes_mask']
+
+ def __init__(self, name, entity_class="entity_class",
+ attributes_mask="attributes_mask"):
+ Field.__init__(self, name=name, default=None, fmt='s')
+ self._entity_class = entity_class
+ self._attributes_mask = attributes_mask
+
+ def addfield(self, pkt, s, val):
+ class_id = getattr(pkt, self._entity_class)
+ attribute_mask = getattr(pkt, self._attributes_mask)
+ entity_class = entity_id_to_class_map.get(class_id)
+ indices = entity_class.attribute_indices_from_mask(attribute_mask)
+ for index in indices:
+ fld = entity_class.attributes[index]._fld
+ s = fld.addfield(pkt, s, val[fld.name])
+ return s
+
+ def getfield(self, pkt, s):
+ """Extract an internal value from a string"""
+ class_id = getattr(pkt, self._entity_class)
+ attribute_mask = getattr(pkt, self._attributes_mask)
+ entity_class = entity_id_to_class_map[class_id]
+ indices = entity_class.attribute_indices_from_mask(attribute_mask)
+ data = {}
+ for index in indices:
+ try:
+ fld = entity_class.attributes[index]._fld
+ except IndexError, e:
+ log.error("Cannot decode attribute {} for entity class {}".format(
+ index, entity_class))
+ continue
+ try:
+ s, value = fld.getfield(pkt, s)
+ except Exception, e:
+ raise
+ data[fld.name] = value
+ return s, data
+
+
+class OmciMessage(Packet):
+ name = "OmciMessage"
+ message_id = None # OMCI message_type value, filled by derived classes
+ fields_desc = []
+
+
+class OmciCreate(OmciMessage):
+ name = "OmciCreate"
+ message_id = 0x44
+ fields_desc = [
+ ShortField("entity_class", None),
+ ShortField("entity_id", 0),
+ OmciData("data")
+ ]
+
+
+class OmciCreateResponse(OmciMessage):
+ name = "OmciCreateResponse"
+ message_id = 0x24
+ fields_desc = [
+ ShortField("entity_class", None),
+ ShortField("entity_id", None),
+ ByteField("success_code", 0),
+ ShortField("parameter_error_attributes_mask", None),
+ ]
+
+
+class OmciDelete(OmciMessage):
+ name = "OmciDelete"
+ message_id = 0x46
+ fields_desc = [
+ ShortField("entity_class", None),
+ ShortField("entity_id", None),
+ ]
+
+
+class OmciDeleteResponse(OmciMessage):
+ name = "OmciDeleteResponse"
+ message_id = 0x26
+ fields_desc = [
+ ShortField("entity_class", None),
+ ShortField("entity_id", None),
+ ByteField("success_code", 0),
+ ]
+
+
+class OmciSet(OmciMessage):
+ name = "OmciSet"
+ message_id = 0x48
+ fields_desc = [
+ ShortField("entity_class", None),
+ ShortField("entity_id", 0),
+ ShortField("attributes_mask", None),
+ OmciMaskedData("data")
+ ]
+
+
+class OmciSetResponse(OmciMessage):
+ name = "OmciSetResponse"
+ message_id = 0x28
+ fields_desc = [
+ ShortField("entity_class", None),
+ ShortField("entity_id", None),
+ ByteField("success_code", 0),
+ ShortField("unsupported_attributes_mask", None),
+ ShortField("failed_attributes_mask", None),
+ ]
+
+
+class OmciGet(OmciMessage):
+ name = "OmciGet"
+ message_id = 0x49
+ fields_desc = [
+ ShortField("entity_class", None),
+ ShortField("entity_id", 0),
+ ShortField("attributes_mask", None)
+ ]
+
+
+class OmciGetResponse(OmciMessage):
+ name = "OmciGetResponse"
+ message_id = 0x29
+ fields_desc = [
+ ShortField("entity_class", None),
+ ShortField("entity_id", 0),
+ ByteField("success_code", 0),
+ ShortField("attributes_mask", None),
+ ConditionalField(
+ OmciMaskedData("data"), lambda pkt: pkt.success_code == 0)
+ ]
+
+
+class OmciGetAllAlarms(OmciMessage):
+ name = "OmciGetAllAlarms"
+ message_id = 0x4b
+ fields_desc = [
+ ShortField("entity_class", 2), # Always 2 (ONT data)
+ ShortField("entity_id", 0), # Always 0 (ONT instance)
+ ByteField("alarm_retrieval_mode", 0) # 0 or 1
+ ]
+
+
+class OmciGetAllAlarmsResponse(OmciMessage):
+ name = "OmciGetAllAlarmsResponse"
+ message_id = 0x2b
+ fields_desc = [
+ ShortField("entity_class", 2), # Always 2 (ONT data)
+ ShortField("entity_id", 0),
+ ShortField("number_of_commands", None)
+ ]
+
+
+class OmciGetAllAlarmsNext(OmciMessage):
+ name = "OmciGetAllAlarmsNext"
+ message_id = 0x4c
+ fields_desc = [
+ ShortField("entity_class", 2), # Always 2 (ONT data)
+ ShortField("entity_id", 0),
+ ShortField("command_sequence_number", None)
+ ]
+
+
+class OmciGetAllAlarmsNextResponse(OmciMessage):
+ name = "OmciGetAllAlarmsNextResponse"
+ message_id = 0x2c
+ fields_desc = [
+ ShortField("entity_class", 2), # Always 2 (ONT data)
+ ShortField("entity_id", 0),
+ ShortField("alarmed_entity_class", None),
+ ShortField("alarmed_entity_id", 0),
+ StrFixedLenField("alarm_bit_map", None, 27) # TODO better type?
+ ]
+
+
+class OmciMibUpload(OmciMessage):
+ name = "OmciMibUpload"
+ message_id = 0x4d
+ fields_desc = [
+ ShortField("entity_class", 2), # Always 2 (ONT data)
+ ShortField("entity_id", 0),
+ ]
+
+
+class OmciMibUploadResponse(OmciMessage):
+ name = "OmciMibUploadResponse"
+ message_id = 0x2d
+ fields_desc = [
+ ShortField("entity_class", 2), # Always 2 (ONT data)
+ ShortField("entity_id", 0),
+ ShortField("number_of_commands", None)
+ ]
+
+
+class OmciMibUploadNext(OmciMessage):
+ name = "OmciMibUploadNext"
+ message_id = 0x4e
+ fields_desc = [
+ ShortField("entity_class", 2), # Always 2 (ONT data)
+ ShortField("entity_id", 0),
+ ShortField("command_sequence_number", None)
+ ]
+
+
+class OmciMibUploadNextResponse(OmciMessage):
+ name = "OmciMibUploadNextResponse"
+ message_id = 0x2e
+ fields_desc = [
+ ShortField("entity_class", 2), # Always 2 (ONT data)
+ ShortField("entity_id", 0),
+ ShortField("object_entity_class", None),
+ ShortField("object_entity_id", 0),
+ ShortField("object_attributes_mask", None),
+ OmciMaskedData("object_data", entity_class='object_entity_class',
+ attributes_mask='object_attributes_mask')
+ ]
+
+
+class OmciMibReset(OmciMessage):
+ name = "OmciMibReset"
+ message_id = 0x4f
+ fields_desc = [
+ ShortField("entity_class", None),
+ ShortField("entity_id", 0)
+ ]
+
+
+class OmciMibResetResponse(OmciMessage):
+ name = "OmciMibResetResponse"
+ message_id = 0x2f
+ fields_desc = [
+ ShortField("entity_class", None),
+ ShortField("entity_id", 0),
+ ByteField("success_code", 0)
+ ]