aboutsummaryrefslogtreecommitdiffstats
path: root/resources/libraries/python/Memif.py
blob: 4e0bb5fa4f908c491413d50aad25744eaade696d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
# Copyright (c) 2023 Cisco and/or its affiliates.
# 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.

"""Memif interface library."""


from enum import IntEnum

from robot.api import logger

from resources.libraries.python.topology import NodeType, Topology
from resources.libraries.python.PapiExecutor import PapiSocketExecutor


class MemifRole(IntEnum):
    """Memif interface roles"""
    MASTER = 0
    SLAVE = 1


class Memif:
    """Memif interface class"""

    def __init__(self):
        pass

    @staticmethod
    def _memif_details(node):
        """Get the memif dump details on the given node.

        :param node: Given node to get Memif dump from.
        :type node: dict
        :returns: List of memif interfaces extracted from Papi response.
        :rtype: list
        """
        cmd = u"memif_dump"
        with PapiSocketExecutor(node) as papi_exec:
            details = papi_exec.add(cmd).get_details()

        for memif in details:
            memif[u"hw_addr"] = str(memif[u"hw_addr"])
            memif[u"role"] = memif[u"role"].value
            memif[u"mode"] = memif[u"mode"].value
            memif[u"flags"] = memif[u"flags"].value \
                if hasattr(memif[u"flags"], u"value") else int(memif[u"flags"])

        logger.debug(f"MEMIF details:\n{details}")

        return details

    @staticmethod
    def _memif_socket_filename_add_del(node, is_add, filename, sid):
        """Create Memif socket on the given node.

        :param node: Given node to create Memif socket on.
        :param is_add: If True, socket is added, otherwise deleted.
        :param filename: Memif interface socket filename.
        :param sid: Socket ID.
        :type node: dict
        :type is_add: bool
        :type filename: str
        :type sid: str
        :returns: Verified data from PAPI response. In this case, the response
            includes only retval.
        :rtype: dict
        """
        cmd = u"memif_socket_filename_add_del_v2"
        err_msg = f"Failed to create memif socket on host {node[u'host']}"
        args = dict(
            is_add=is_add,
            socket_id=int(sid),
            socket_filename=str(u"/tmp/" + filename)
        )
        with PapiSocketExecutor(node) as papi_exec:
            return papi_exec.add(cmd, **args).get_reply(err_msg)

    @staticmethod
    def _memif_create(node, mid, sid, rxq=1, txq=1, role=1, use_dma=False):
        """Create Memif interface on the given node, return its sw_if_index.

        :param node: Given node to create Memif interface on.
        :param mid: Memif interface ID.
        :param sid: Socket ID.
        :param rxq: Number of RX queues; 0 means do not set.
        :param txq: Number of TX queues; 0 means do not set.
        :param role: Memif interface role [master=0|slave=1]. Default is slave.
        :param use_dma: Use DMA acceleration. Requires hardware support.
        :type node: dict
        :type mid: str
        :type sid: str
        :type rxq: int
        :type txq: int
        :type role: int
        :type use_dma: bool
        :returns: sw_if_index
        :rtype: int
        """
        cmd = u"memif_create_v2"
        err_msg = f"Failed to create memif interface on host {node[u'host']}"
        args = dict(
            role=role,
            rx_queues=int(rxq),
            tx_queues=int(txq),
            socket_id=int(sid),
            id=int(mid),
            secret=u"",
            use_dma=use_dma,
        )

        with PapiSocketExecutor(node) as papi_exec:
            return papi_exec.add(cmd, **args).get_sw_if_index(err_msg)

    @staticmethod
    def create_memif_interface(
        node, filename, mid, sid, rxq=1, txq=1, role=u"SLAVE", use_dma=False
    ):
        """Create Memif interface on the given node.

        :param node: Given node to create Memif interface on.
        :param filename: Memif interface socket filename.
        :param mid: Memif interface ID.
        :param sid: Socket ID.
        :param rxq: Number of RX queues; 0 means do not set.
        :param txq: Number of TX queues; 0 means do not set.
        :param role: Memif interface role [master=0|slave=1]. Default is master.
        :param use_dma: Use DMA acceleration. Requires hardware support.
        :type node: dict
        :type filename: str
        :type mid: str
        :type sid: str
        :type rxq: int
        :type txq: int
        :type role: str
        :type use_dma: bool
        :returns: SW interface index.
        :rtype: int
        :raises ValueError: If command 'create memif' fails.
        """
        role = getattr(MemifRole, role.upper()).value

        # Create socket
        Memif._memif_socket_filename_add_del(node, True, filename, sid)

        # Create memif
        sw_if_index = Memif._memif_create(
            node, mid, sid, rxq=rxq, txq=txq, role=role, use_dma=use_dma
        )

        # Update Topology
        if_key = Topology.add_new_port(node, u"memif")
        Topology.update_interface_sw_if_index(node, if_key, sw_if_index)

        ifc_name = Memif.vpp_get_memif_interface_name(node, sw_if_index)
        Topology.update_interface_name(node, if_key, ifc_name)

        ifc_mac = Memif.vpp_get_memif_interface_mac(node, sw_if_index)
        Topology.update_interface_mac_address(node, if_key, ifc_mac)

        Topology.update_interface_memif_socket(
            node, if_key, u"/tmp/" + filename
        )
        Topology.update_interface_memif_id(node, if_key, mid)
        Topology.update_interface_memif_role(node, if_key, str(role))

        return sw_if_index

    @staticmethod
    def show_memif(node):
        """Show Memif data for the given node.

        :param node: Given node to show Memif data on.
        :type node: dict
        """
        Memif._memif_details(node)

    @staticmethod
    def show_memif_on_all_duts(nodes):
        """Show Memif data on all DUTs.

        :param nodes: Topology nodes.
        :type nodes: dict
        """
        for node in nodes.values():
            if node[u"type"] == NodeType.DUT:
                Memif.show_memif(node)

    @staticmethod
    def vpp_get_memif_interface_name(node, sw_if_index):
        """Get Memif interface name from Memif interfaces dump.

        :param node: DUT node.
        :param sw_if_index: DUT node.
        :type node: dict
        :type sw_if_index: int
        :returns: Memif interface name, or None if not found.
        :rtype: str
        """
        details = Memif._memif_details(node)

        for memif in details:
            if memif[u"sw_if_index"] == sw_if_index:
                return memif[u"if_name"]
        return None

    @staticmethod
    def vpp_get_memif_interface_mac(node, sw_if_index):
        """Get Memif interface MAC address from Memif interfaces dump.

        :param node: DUT node.
        :param sw_if_index: DUT node.
        :type node: dict
        :type sw_if_index: int
        :returns: Memif interface MAC address, or None if not found.
        :rtype: str
        """
        details = Memif._memif_details(node)

        for memif in details:
            if memif[u"sw_if_index"] == sw_if_index:
                return memif[u"hw_addr"]
        return None