[test] test whether the RCP supports data poll (#10494)

This commit adds a test case to the `cp-tests` to test whether the RCP
supports data poll transmitter and receiver.

tools/cp-caps/README.md

@@ -54,7 +54,7 @@ Show help info.
 
 ```bash
 $ python3 ./tools/cp-caps/rcp_caps_test.py -h
-usage: rcp_caps_test.py [-h] [-c] [-d] [-v]
+usage: rcp_caps_test.py [-h] [-c] [-d] [-p] [-v]
 
 This script is used for testing RCP capabilities.
 
@@ -62,6 +62,7 @@ options:
   -h, --help           show this help message and exit
   -c, --csl            test whether the RCP supports CSL transmitter
   -d, --diag-commands  test whether the RCP supports all diag commands
+  -p, --data-poll      test whether the RCP supports data poll
   -v, --verbose        output verbose information
 
 Device Interfaces:
@@ -133,3 +134,13 @@ The parameter `-c` or `--csl` starts to test whether the RCP supports the CSL tr
 $ DUT_ADB_USB=TW69UCKFZTGM95OR REF_CLI_SERIAL=/dev/ttyACM0 python3 ./tools/cp-caps/rcp_caps_test.py -c
 CSL Transmitter ------------------------------------------ OK
 ```
+
+### Test Data Poll
+
+The parameter `-p` or `--data-poll` starts to test whether the RCP supports data poll.
+
+```bash
+$ DUT_ADB_USB=1269UCKFZTAM95OR REF_CLI_SERIAL=/dev/ttyACM0 python3 ./tools/cp-caps/rcp_caps_test.py -p
+Data Poll Parent ----------------------------------------- OK
+Data Poll Child ------------------------------------------ OK
+```

tools/cp-caps/rcp_caps_test.py

@@ -83,6 +83,11 @@ class RcpCaps(object):
         self.__dataset = self.__get_default_dataset()
         self.__test_csl_transmitter()
 
+    def test_data_poll(self):
+        self.__dataset = self.__get_default_dataset()
+        self.__test_data_poll_parent()
+        self.__test_data_poll_child()
+
     #
     # Private methods
     #
@@ -117,6 +122,54 @@ class RcpCaps(object):
 
         self.__output_format_bool('CSL Transmitter', ret)
 
+    def __test_data_poll_parent(self):
+        packets = 10
+
+        self.__dut.factory_reset()
+        self.__ref.factory_reset()
+
+        self.__dut.join(self.__dataset)
+        self.__dut.wait_for('state', 'leader')
+
+        # Set the reference device as an SED
+        self.__ref.set_mode('-')
+        self.__ref.set_poll_period(500)
+        self.__ref.join(self.__dataset)
+        self.__ref.wait_for('state', 'child')
+
+        dut_mleid = self.__dut.get_ipaddr_mleid()
+        result = self.__ref.ping(dut_mleid, count=packets, interval=1)
+
+        self.__dut.leave()
+        self.__ref.leave()
+
+        ret = result['transmitted_packets'] == result['received_packets'] == packets
+        self.__output_format_bool('Data Poll Parent', ret)
+
+    def __test_data_poll_child(self):
+        packets = 10
+
+        self.__dut.factory_reset()
+        self.__ref.factory_reset()
+
+        self.__ref.join(self.__dataset)
+        self.__ref.wait_for('state', 'leader')
+
+        # Set the DUT as an SED
+        self.__dut.set_mode('-')
+        self.__dut.set_poll_period(500)
+        self.__dut.join(self.__dataset)
+        self.__dut.wait_for('state', 'child')
+
+        dut_mleid = self.__dut.get_ipaddr_mleid()
+        result = self.__ref.ping(dut_mleid, count=packets, interval=1)
+
+        self.__dut.leave()
+        self.__ref.leave()
+
+        ret = result['transmitted_packets'] == result['received_packets'] == packets
+        self.__output_format_bool('Data Poll Child', ret)
+
     def __test_diag_channel(self):
         channel = 20
         commands = ['diag channel', f'diag channel {channel}']
@@ -429,6 +482,14 @@ def parse_arguments():
         help='test whether the RCP supports all diag commands',
     )
 
+    parser.add_argument(
+        '-p',
+        '--data-poll',
+        action='store_true',
+        default=False,
+        help='test whether the RCP supports data poll',
+    )
+
     parser.add_argument(
         '-v',
         '--verbose',
@@ -455,6 +516,9 @@ def main():
     if arguments.csl is True:
         rcp_caps.test_csl()
 
+    if arguments.data_poll is True:
+        rcp_caps.test_data_poll()
+
 
 if __name__ == '__main__':
     main()