sma: add device protocol name

A device can now be identified by a protocol and a name.  This allows to
have multiple types of devices providing the same protocol.  The
selection of which device manager to use for specific protocol will be
added in following patches.

Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: Ib4a6c323ba6a2a5d36ff958ddc40631fd9329cb1
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11683
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>

python/spdk/sma/device/device.py

@@ -8,8 +8,9 @@ class DeviceException(Exception):
 
 
 class DeviceManager:
-    def __init__(self, name, client):
+    def __init__(self, name, protocol, client):
         self._client = client
+        self.protocol = protocol
         self.name = name
 
     def init(self, config):

python/spdk/sma/device/nvmf_tcp.py

@@ -10,7 +10,7 @@ from ..proto import nvmf_tcp_pb2
 
 class NvmfTcpDeviceManager(DeviceManager):
     def __init__(self, client):
-        super().__init__('nvmf_tcp', client)
+        super().__init__('nvmf_tcp', 'nvmf_tcp', client)
 
     def init(self, config):
         self._has_transport = self._create_transport()

python/spdk/sma/sma.py

@@ -22,7 +22,7 @@ class StorageManagementAgent(pb2_grpc.StorageManagementAgentServicer):
         return wrapper
 
     def register_device(self, device_manager):
-        self._devices[device_manager.name] = device_manager
+        self._devices[device_manager.protocol] = device_manager
 
     def run(self):
         self._server.start()