Platform APIs for SmartSwitch

sonic_platform_base/chassis_base.py

@@ -151,6 +151,9 @@ def is_modular_chassis(self):
             A bool value, should return False by default or for fixed-platforms.
             Should return True for supervisor-cards, line-cards etc running as part
             of modular-chassis.
+            For SmartSwitch platforms this should return True even if they are
+            fixed-platforms, as they are treated like a modular chassis as the
+            DPU cards are treated like line-cards of a modular-chassis.
         """
         return False
 
@@ -218,6 +221,7 @@ def get_component(self, index):
     def get_num_modules(self):
         """
         Retrieves the number of modules available on this chassis
+        On a SmarSwitch chassis this includes the number of DPUs.
 
         Returns:
             An integer, the number of modules available on this chassis
@@ -226,7 +230,8 @@ def get_num_modules(self):
 
     def get_all_modules(self):
         """
-        Retrieves all modules available on this chassis
+        Retrieves all modules available on this chassis. On a SmartSwitch
+        chassis this includes the DPUs.
 
         Returns:
             A list of objects derived from ModuleBase representing all
@@ -237,6 +242,8 @@ def get_all_modules(self):
     def get_module(self, index):
         """
         Retrieves module represented by (0-based) index <index>
+        On a SmartSwitch index:0 will fetch switch, index:1 will fetch
+        DPU0 and so on
 
         Args:
             index: An integer, the index (0-based) of the module to
@@ -263,12 +270,54 @@ def get_module_index(self, module_name):
         Args:
             module_name: A string, prefixed by SUPERVISOR, LINE-CARD or FABRIC-CARD
             Ex. SUPERVISOR0, LINE-CARD1, FABRIC-CARD5
+            SmartSwitch Example: SWITCH, DPU1, DPU2 ... DPUX
 
         Returns:
             An integer, the index of the ModuleBase object in the module_list
         """
         raise NotImplementedError
 
+    ##############################################
+    # SmartSwitch methods
+    ##############################################
+
+    def get_dpu_id(self, name):
+        """
+        Retrieves the DPU ID for the given dpu-module name.
+        Returns None for non-smartswitch chassis.
+
+        Returns:
+            An integer, indicating the DPU ID Ex: name:DPU0 return value 1,
+            name:DPU1 return value 2, name:DPUX return value X+1
+        """
+        raise NotImplementedError
+
+    def is_smartswitch(self):
+        """
+        Retrieves whether the sonic instance is part of smartswitch
+
+        Returns:
+            Returns:True for SmartSwitch and False for other platforms
+        """
+        return False 
+
+    def get_module_dpu_data_port(self, index):
+        """
+        Retrieves the DPU data port NPU-DPU association represented for
+        the DPU index. Platforms that need to overwrite the platform.json
+        file will use this API. This is valid only on the Switch and not on DPUs
+
+        Args:
+        index: An integer, the index of the module to retrieve
+
+        Returns:
+            A string giving the NPU-DPU port association:
+            Ex: For index: 1 will return the dup0 port association which is
+            "Ethernet-BP0: Ethernet0" where the string left of ":" (Ethernet-BP0)
+            is the NPU port and the string right of ":" (Ethernet0) is the DPU port
+        """
+        raise NotImplementedError
+
     ##############################################
     # Fan methods
     ##############################################

sonic_platform_base/module_base.py

@@ -21,6 +21,8 @@ class ModuleBase(device_base.DeviceBase):
     MODULE_TYPE_SUPERVISOR = "SUPERVISOR"
     MODULE_TYPE_LINE    = "LINE-CARD"
     MODULE_TYPE_FABRIC  = "FABRIC-CARD"
+    MODULE_TYPE_DPU  = "DPU"
+    MODULE_TYPE_SWITCH  = "SWITCH"
 
     # Possible card status for modular chassis
     # Module state is Empty if no module is inserted in the slot
@@ -104,15 +106,18 @@ def get_system_eeprom_info(self):
     def get_name(self):
         """
         Retrieves the name of the module prefixed by SUPERVISOR, LINE-CARD,
-        FABRIC-CARD
+        FABRIC-CARD, SWITCH, DPU0, DPUX
 
         Returns:
             A string, the module name prefixed by one of MODULE_TYPE_SUPERVISOR,
-            MODULE_TYPE_LINE or MODULE_TYPE_FABRIC and followed by a 0-based index
+            MODULE_TYPE_LINE or MODULE_TYPE_FABRIC or MODULE_TYPE_DPU or
+            MODULE_TYPE_SWITCH and followed by a 0-based index.
 
             Ex. A Chassis having 1 supervisor, 4 line-cards and 6 fabric-cards
             can provide names SUPERVISOR0, LINE-CARD0 to LINE-CARD3,
-            FABRIC-CARD0 to FABRIC-CARD5
+            FABRIC-CARD0 to FABRIC-CARD5.
+            A SmartSwitch having 4 DPUs and 1 Switch can provide names DPU0 to
+            DPU3 and SWITCH
         """
         raise NotImplementedError
 
@@ -141,6 +146,7 @@ def get_type(self):
         Returns:
             A string, the module-type from one of the predefined types:
             MODULE_TYPE_SUPERVISOR, MODULE_TYPE_LINE or MODULE_TYPE_FABRIC
+            or MODULE_TYPE_DPU or MODULE_TYPE_SWITCH
         """
         raise NotImplementedError
 
@@ -152,6 +158,10 @@ def get_oper_status(self):
             A string, the operational status of the module from one of the
             predefined status values: MODULE_STATUS_EMPTY, MODULE_STATUS_OFFLINE,
             MODULE_STATUS_FAULT, MODULE_STATUS_PRESENT or MODULE_STATUS_ONLINE
+            The SmartSwitch platforms will have these additional status
+            MODULE_STATUS_MIDPLANE_OFFLINE, MODULE_STATUS_MIDPLANE_ONLINE,
+            MODULE_STATUS_CONTROLPLANE_OFFLINE, MODULE_STATUS_CONTROLPLANE_ONLINE,
+            MODULE_STATUS_DATAPLANE_OFFLINE, MODULE_STATUS_DATAPLANE_ONLINE
         """
         raise NotImplementedError
 
@@ -175,7 +185,7 @@ def set_admin_state(self, up):
         The down state will power down the module and the status should show
         MODULE_STATUS_OFFLINE.
         The up state will take the module to MODULE_STATUS_FAULT or
-        MODULE_STAUS_ONLINE states.
+        MODULE_STATUS_ONLINE states.
 
         Args:
             up: A boolean, True to set the admin-state to UP. False to set the
@@ -196,6 +206,62 @@ def get_maximum_consumed_power(self):
         """
         raise NotImplementedError
 
+    ##############################################
+    # SmartSwitch methods
+    ##############################################
+
+    def get_reboot_cause(self):
+        """
+        Retrieves the DPU ID. Returns None for non-smartswitch chassis.
+
+        Returns:
+            An integer, indicating the DPU ID. DPU0 returns 1, DPUX returns X+1
+            Returns '0' on switch module
+        """
+        raise NotImplementedError
+
+    def get_reboot_cause(self):
+        """
+        Retrieves the cause of the previous reboot of the DPU module
+
+        Returns:
+            A tuple (string, string) where the first element is a string
+            containing the cause of the previous reboot. This string must
+            be one of the predefined strings in this class. If the first
+            string is "REBOOT_CAUSE_HARDWARE_OTHER", the second string can be
+            used to pass a description of the reboot cause.
+
+            Some more causes are appended to the existing list to handle other
+            modules such as DPUs.
+            Ex: REBOOT_CAUSE_POWER_LOSS, REBOOT_CAUSE_HOST_RESET_DPU,
+            REBOOT_CAUSE_HOST_POWERCYCLED_DPU, REBOOT_CAUSE_SW_THERMAL,
+            REBOOT_CAUSE_DPU_SELF_REBOOT
+        """
+        raise NotImplementedError
+
+    def get_state_info(self):
+        """
+        Retrieves the dpu state object having the detailed dpu state progression.
+        Fetched from ChassisStateDB.
+
+        Returns:
+            An object instance of the DPU_STATE (see DB schema)
+            Returns None on switch module
+        """
+        raise NotImplementedError
+
+    def get_health_info(self):
+        """
+        Retrieves the dpu health object having the detailed dpu health.
+        Fetched from the DPUs.
+
+        Returns:
+            An object instance of the dpu health. Should consist of two lists
+            "summary and monitorlist" See system_health.py for usage
+            Returns None on switch module
+        """
+        raise NotImplementedError
+
     ##############################################
     # Component methods
     ##############################################
@@ -541,6 +607,8 @@ def get_midplane_ip(self):
         line-card and return the midplane IP-address of the line-card.
         When called from the line-card, the module will represent the
         Supervisor and return its midplane IP-address.
+        When called from the DPU, returns the midplane IP-address of the dpu-card.
+        When called from the Switch returns the midplane IP-address of Switch.
 
         Returns:
             A string, the IP-address of the module reachable over the midplane