[PATCH 2/4] playbooks: Add a playbook to set up rxe on target nodes

[cel@kernel.org]

From: Chuck Lever <chuck.lever@oracle.com>

The playbook adds a udev rule to provision an rxe device when the
node is booted.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 playbooks/roles/rxe/tasks/main.yml         | 29 ++++++++++++++++++++++
 playbooks/roles/rxe/templates/udev-rule.j2 |  2 ++
 playbooks/rxe.yml                          |  4 +++
 3 files changed, 35 insertions(+)
 create mode 100644 playbooks/roles/rxe/tasks/main.yml
 create mode 100644 playbooks/roles/rxe/templates/udev-rule.j2
 create mode 100644 playbooks/rxe.yml

diff --git a/playbooks/roles/rxe/tasks/main.yml b/playbooks/roles/rxe/tasks/main.yml
new file mode 100644
index 000000000000..88e655981f7f
--- /dev/null
+++ b/playbooks/roles/rxe/tasks/main.yml
@@ -0,0 +1,29 @@
+---
+- name: Include optional extra_vars
+  ansible.builtin.include_vars:
+    file: "{{ item }}"
+  with_first_found:
+    - files:
+        - "../extra_vars.yml"
+        - "../extra_vars.yaml"
+        - "../extra_vars.json"
+      skip: true
+  failed_when: false
+  tags: vars
+
+- name: Insert a udev rule to create an rxe device
+  become: true
+  become_method: ansible.builtin.sudo
+  ansible.builtin.template:
+    src: "udev-rule.j2"
+    dest: "/usr/lib/udev/rules.d/99-rxe.rules"
+    owner: "root"
+    group: "root"
+    mode: "0644"
+    force: false
+
+- name: Reload the udev ruleset
+  become: true
+  become_method: ansible.builtin.sudo
+  ansible.builtin.shell: "udevadm control --reload && udevadm trigger"
+  changed_when: true
diff --git a/playbooks/roles/rxe/templates/udev-rule.j2 b/playbooks/roles/rxe/templates/udev-rule.j2
new file mode 100644
index 000000000000..9f5b5e4a68f3
--- /dev/null
+++ b/playbooks/roles/rxe/templates/udev-rule.j2
@@ -0,0 +1,2 @@
+SUBSYSTEM=="net", KERNEL=="{{ ansible_default_ipv4.interface }}", \
+   PROGRAM="/usr/sbin/rdma link add rxe0 type rxe netdev {{ ansible_default_ipv4.interface }}"
diff --git a/playbooks/rxe.yml b/playbooks/rxe.yml
new file mode 100644
index 000000000000..dc51c0347628
--- /dev/null
+++ b/playbooks/rxe.yml
@@ -0,0 +1,4 @@
+---
+- hosts: all
+  roles:
+    - role: rxe
-- 
2.45.1