46d9b751fd
This changes to add the validations for NFV OvS DPDK zero packet loss rules. Change-Id: I70e60b8039eb99af26c8e39e30c7cdfd93f5a3c0
141 lines
4.3 KiB
Python
141 lines
4.3 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""check_cpus_aligned_with_dpdk_nics module
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Used by the `check_nfv_ovsdpdk_zero_packet_loss` role.
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"""
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from ansible.module_utils.basic import AnsibleModule
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from yaml import safe_load as yaml_safe_load
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import json
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import yaml
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DOCUMENTATION = '''
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---
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module: OVS DPDK PMD CPU's check
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short_description: Run PMD CPU's from all the NUMA nodes check
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description:
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- Run PMD CPU's from all the NUMA nodes check
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- Owned by the DFG:NFV Integration
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options:
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cpus:
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required: true
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description:
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- The CPU's list
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type: str
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numa_node:
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required: true
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description:
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- The NUMA node
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type: int
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dpdk_nics_numa_info:
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required: true
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description:
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- The DPDK NIC's NUMA details
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type: list
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author: "Jaganathan Palanisamy"
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'''
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EXAMPLES = '''
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# Call this module from TripleO Ansible Validations
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- name: Check CPU's aligned with DPDK NIC's NUMA
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become: true
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check_cpus_aligned_with_dpdk_nics:
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cpus: "2,3,4,5"
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numa_node: "0"
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dpdk_nics_numa_info: [{"numa_node": 0, "mac": "mac1", "pci": "pci1"},
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{"numa_node": 0, "mac": "mac2", "pci": "pci2"}]
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register: valid_cpus
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'''
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def get_nodes_cpus_info(module):
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"""Gets the logical cpus info for all numa nodes."""
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dict_cpus = {}
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# Gets numa node and cpu details
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cmd = "lscpu -p=NODE,CPU"
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result = module.run_command(cmd)
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if (not result or (result[0] != 0) or not (str(result[1]).strip(' '))):
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err = "Unable to determine NUMA cpus"
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module.fail_json(msg=err)
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else:
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output = str(result[1])
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try:
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for line in output.split('\n'):
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if line and '#' not in line:
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cpu_info = line.split(',')
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node = int(cpu_info[0])
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thread = int(cpu_info[1])
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if node in dict_cpus:
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if thread not in dict_cpus[node]:
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dict_cpus[node].append(thread)
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else:
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dict_cpus[node] = [thread]
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except (IndexError, ValueError):
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err = "Unable to determine NUMA cpus"
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module.fail_json(msg=err)
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return dict_cpus
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def check_cpus_aligned_with_dpdk_nics(module, cpus, numa_node, dpdk_nics_numa_info):
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"""Checks cpus aligned with NUMA with DPDK NIC's."""
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result = dict(
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changed=False,
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valid_cpus=False,
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message=''
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)
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nodes = []
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valid_numa = False
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invalid_cpus = []
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nodes_cpus = get_nodes_cpus_info(module)
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for dpdk_nics_numa in dpdk_nics_numa_info:
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if (dpdk_nics_numa['numa_node'] == numa_node):
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valid_numa = True
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break
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if not valid_numa:
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err = "NFV instance is not aligned with DPDK NIC's NUMA."
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module.fail_json(msg=err)
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for cpu in cpus.split(','):
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if not int(cpu) in nodes_cpus[numa_node]:
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invalid_cpus.append(cpu)
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if invalid_cpus:
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err = "CPU's are not aligned with DPDK NIC's NUMA, Invalid CPU's: "+','.join(invalid_cpus)
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result['message'] = err
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result['valid_cpus'] = False
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module.fail_json(msg=err)
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else:
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result['message'] = "CPU's configured correctly: " + cpus
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result['valid_cpus'] = True
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module.exit_json(**result)
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def main():
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module = AnsibleModule(
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argument_spec=yaml_safe_load(DOCUMENTATION)['options']
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)
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check_cpus_aligned_with_dpdk_nics(module,
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module.params.get('cpus'),
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module.params.get('numa_node'),
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module.params.get('dpdk_nics_numa_info'))
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if __name__ == '__main__':
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main()
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