Update for the Procedures for insertion/hot swap of Switch Fabric Module (SFM)

1. Add chassis_module_config.py and its service.
2. When the cli command "sudo config chassis modules startup/shutdown" runs,
   calls chassis_module_set_admin_state.py to do the ralated operations.

Author: JunhongMao

chassis/utils/chassis_module_set_admin_state.py

@@ -0,0 +1,94 @@
+#!/usr/bin/env python3
+
+# Name: chassis_module_set_admin_state.py, version: 1.0
+# Syntax: chassis_module_set_admin_state.py <module_name> <up/down>
+#
+import re
+import sys
+import subprocess
+import time
+
+from platform_ndk import nokia_common
+from sonic_py_common.logger import Logger
+
+logger=Logger("chassis_module_set_admin_state.py")
+
+sfm_asic_dict = {
+    0: [0,1],
+    1: [2,3],
+    2: [4,5],
+    3: [6,7],
+    4: [8,9],
+    5: [10,11],
+    6: [12,13],
+    7: [14,15]
+}
+
+sfm_hw_slot_mapping = {
+    0: 15,
+    1: 16,
+    2: 17,
+    3: 18,
+    4: 19,
+    5: 20,
+    6: 21,
+    7: 22
+}
+
+def main():
+    argc = len(sys.argv)
+
+    if argc != 3:
+        logger.log_warning("Missing parameters!")
+        return
+
+    module = sys.argv[1]
+    state = sys.argv[2]
+
+    if not module.startswith("FABRIC-CARD"):
+        logger.log_warning("Failed to set {} state. Admin state can only be set on Fabric module".format(module))
+        return
+
+    num = int(re.search(r"(\d+)$", module).group())
+    if num not in sfm_hw_slot_mapping:
+        logger.log_error("Invalid module name {}".format(module))
+        return
+
+    if state == "down":
+        logger.log_info("Shutting down chassis module {}".format(module))
+        asic_list = sfm_asic_dict[num]
+        for asic in asic_list:
+            logger.log_info("Shut down swss@{} and syncd@{} ...".format(asic, asic))
+            # Process state
+            process = subprocess.Popen(['sudo', 'systemctl', 'stop', 'swss@{}.service'.format(asic)],
+                                       stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+            stdout, stderr = process.communicate()
+            outstr = stdout.decode('ascii')
+        # wait for service is down
+        time.sleep(2)
+
+        logger.log_info("Power off {} module ...".format(module))
+        hw_slot = sfm_hw_slot_mapping[num]
+        nokia_common._power_onoff_SFM(hw_slot,False)
+        logger.log_info("Shut down chassis module {} complete".format(module))
+    else:
+        logger.log_info("Starting up chassis module {}".format(module))
+        logger.log_info("Power up {} module ...".format(module))
+        hw_slot = sfm_hw_slot_mapping[num]
+        nokia_common._power_onoff_SFM(hw_slot,True)
+        # wait SFM HW init done.
+        time.sleep(15)
+
+        asic_list = sfm_asic_dict[num]
+        for asic in asic_list:
+            logger.log_info("Start the swss@{} and syncd@{} ...".format(asic, asic))
+            # Process state
+            process = subprocess.Popen(['sudo', 'systemctl', 'start', 'swss@{}.service'.format(asic)],
+                                       stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+            stdout, stderr = process.communicate()
+            outstr = stdout.decode('ascii')
+        logger.log_info("Started chassis module {} complete".format(module))
+    return
+
+if __name__ == "__main__":
+    main()

debian/sonic-platform-nokia-chassis.install

@@ -9,5 +9,6 @@ chassis/utils/hw-management-generate-dump.sh usr/bin
 chassis/utils/nokia_install_ndk_service usr/local/bin
 chassis/utils/70-persistent-net.rules etc/udev/rules.d
 chassis/utils/blacklist.conf etc/modprobe.d
+chassis/utils/chassis_module_set_admin_state.py usr/local/bin
 common/utils/nokia-asic-thermal.py opt/srlinux/bin
 common/service/nokia-asic-thermal.service lib/systemd/system