##
##   Copyright (c) 2020 Intel Corporation.
##
##   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.
##
---
- name: install dependencies
  include_role:
    name: install_dependencies

- name: download DPDK
  unarchive:
    src: "{{ dpdk_url }}"
    dest: "/usr/src"
    remote_src: yes
    list_files: yes
    mode: 0755
  register: dpdk_download

- name: set local dpdk directory path
  set_fact:
    dpdk_dir: "{{ dpdk_download.dest  }}/{{ dpdk_download.files[0] }}"

- name: run make config
  make:
    chdir: "{{ dpdk_dir }}"
    target: config
    params:
      T: "{{ dpdk_target }}"

- name: update ansible_kernel fact
  setup:
    filter: 'ansible_kernel'

- name: patch DPDK (kni)
  lineinfile:
    path: "{{ dpdk_dir }}/kernel/linux/kni/kni_net.c"
    regexp: '^\s*kni_net_tx_timeout'
    line: 'kni_net_tx_timeout(struct net_device *dev, unsigned int txqueue)'
  when:
    - ansible_distribution == "CentOS"
    - ansible_distribution_major_version == '8'
    - ansible_kernel is version('4.18.0-240','>=')

- name: enable virtio-user support
  lineinfile:
    path: "{{ dpdk_dir }}/build/.config"
    regexp: '^CONFIG_RTE_VIRTIO_USER'
    line: 'CONFIG_RTE_VIRTIO_USER=y'
    mode: 0600

- name: enable PCAP PMD support
  lineinfile:
    path: "{{ dpdk_dir }}/build/.config"
    regexp: '^CONFIG_RTE_LIBRTE_PMD_PCAP'
    line: 'CONFIG_RTE_LIBRTE_PMD_PCAP=y'
    mode: 0600

- name: build DPDK
  make:
    target: install
    chdir: "{{ dpdk_dir }}"
    params:
      T: "{{ dpdk_target }}"
      DESTDIR: install
      prefix: "/usr"

- name: find dpdk tools
  find:
    path: "{{ dpdk_dir }}"
    patterns: "dpdk-devbind.py"
    recurse: yes
  register: dpdk_tools_dir

- name: set path to dpdk usertools directory
  set_fact:
    dpdk_tools: "{{ dpdk_tools_dir.files[0].path }}"

- name: load userspace modules
  modprobe:
    name: "{{ item }}"
    state: present
  with_items:
    - vfio-pci
    - uio

- name: install dpdk-devbind.py in /usr/local/bin
  copy:
    remote_src: yes
    src: "{{ dpdk_tools }}"
    dest: "/usr/local/bin/dpdk-devbind.py"
    mode: 0700
    owner: root
    group: root
  become: yes

- name: load intel module
  command: "insmod {{ dpdk_dir }}/{{ dpdk_target }}/kmod/igb_uio.ko"
  register: result
  failed_when: "'No such file or directory' in result.stderr"
  changed_when: "'already bound' not in result.stderr"