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[sfputil] Firmware download/upgrade CLI support for QSFP-DD (#1947) #2349

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merged 6 commits into from
Jan 9, 2023
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[sfputil] Firmware download/upgrade CLI support for QSFP-DD (#1947) #2349

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3134557
[sfputil] Firmware download/upgrade CLI support for QSFP-DD (#1947)
CliveNi Sep 1, 2022
716fa37
Update unit tests for sfputil.
CliveNi Sep 7, 2022
8f91400
[sfputil] Firmware download/upgrade CLI support for QSFP-DD (#1947)
CliveNi Sep 20, 2022
b1e41e8
[sfputil] Firmware download/upgrade CLI support for QSFP-DD (#1947)
CliveNi Oct 3, 2022
88c9af4
Update unit tests for sfputil.
CliveNi Oct 3, 2022
1c9c0f4
[sfputil] Firmware download/upgrade CLI support for QSFP-DD (#1947)
CliveNi Jan 7, 2023
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57 changes: 57 additions & 0 deletions sfputil/main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1112,6 +1112,59 @@ def run_firmware(port_name, mode):

return status

def is_fw_switch_done(port_name):
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I am not sure why this API is required because there is already a return status from run_firmware() to indicate a failure. An imageA could be running while the committed Image could be Image B. For eg.

  1. Image A is running and its is the committed image
  2. User updates Image B
  3. Runs the image B

Now the running image is B but the committed image is A

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"run_firmware" indicates the status which read before reset to target image. This status only means module received and done the judgement for "run_firmware" cmd, but not means module already jumped into target image.
"run_firmware" will maybe involved non-volatile memory operation in module according to module implementation, so that it will maybe spend several or tens of seconds. That will cause commit failed if sends "commit_firmware" once "run_firmware" done without "is_fw_switch_done".
imageCheckPurpose

"""
Make sure the run_firmware cmd is done
@port_name:
Returns 1 on success, and exit_code = -1 on failure
"""
status = 0
physical_port = logical_port_to_physical_port_index(port_name)
sfp = platform_chassis.get_sfp(physical_port)

try:
api = sfp.get_xcvr_api()
except NotImplementedError:
click.echo("This functionality is currently not implemented for this platform")
sys.exit(ERROR_NOT_IMPLEMENTED)

try:
MAX_WAIT = 60 # 60s timeout.
is_busy = 1 # Initial to 1 for entering while loop at least one time.
timeout_time = time.time() + MAX_WAIT
while is_busy and (time.time() < timeout_time):
fw_info = api.get_module_fw_info()
is_busy = 1 if (fw_info['status'] == False) and (fw_info['result'] is not None) else 0
time.sleep(2)

if fw_info['status'] == True:
(ImageA, ImageARunning, ImageACommitted, ImageAInvalid,
ImageB, ImageBRunning, ImageBCommitted, ImageBInvalid) = fw_info['result']

if (ImageARunning == 1) and (ImageAInvalid == 1): # ImageA is running, but also invalid.
click.echo("FW info error : ImageA shows running, but also shows invalid!")
status = -1 # Abnormal status.
elif (ImageBRunning == 1) and (ImageBInvalid == 1): # ImageB is running, but also invalid.
click.echo("FW info error : ImageB shows running, but also shows invalid!")
status = -1 # Abnormal status.
elif (ImageARunning == 1) and (ImageACommitted == 0): # ImageA is running, but not committed.
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ImageACommitted check is NOT correct here because a running image need NOT be committed.

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Yes, so that (Running == 1) and (Committed == 0) will return success, isn't it?

click.echo("FW images switch successful : ImageA is running")
status = 1 # run_firmware is done.
elif (ImageBRunning == 1) and (ImageBCommitted == 0): # ImageB is running, but not committed.
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commit_firmware() happens after the run_firmware() so why are you checking for ImageBCommitted?

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is_fw_switch_done() executes between run_firmware() and commit_firmware() in upgrade() and assuming the running and committed image is same before upgrade(). run_firmware() will change the running image, so that checking running and committed image are different will be a easy way for judging image switch done.

click.echo("FW images switch successful : ImageB is running")
status = 1 # run_firmware is done.
else: # No image is running, or running and committed image is same.
click.echo("FW info error : Failed to switch into uncommitted image!")
status = -1 # Failure for Switching images.
else:
click.echo("FW switch : Timeout!")
status = -1 # Timeout or check code error or CDB not supported.

except NotImplementedError:
click.echo("This functionality is not applicable for this transceiver")

return status

def commit_firmware(port_name):
status = 0
physical_port = logical_port_to_physical_port_index(port_name)
Expand Down Expand Up @@ -1280,6 +1333,10 @@ def upgrade(port_name, filepath):

click.echo("Firmware run in mode 1 successful")

if is_fw_switch_done(port_name) != 1:
click.echo('Failed to switch firmware images!')
sys.exit(EXIT_FAIL)

Comment on lines +1336 to +1339
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why are you checking for committed image inside this function when the commit_firmware() happens at line 1342

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Same as above reply.

status = commit_firmware(port_name)
if status != 1:
click.echo('Failed to commit firmware! CDB status: {}'.format(status))
Expand Down
24 changes: 24 additions & 0 deletions tests/sfputil_test.py
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Original file line number Diff line number Diff line change
Expand Up @@ -475,6 +475,30 @@ def test_run_firmwre(self, mock_chassis):
status = sfputil.run_firmware("Ethernet0", 1)
assert status == 1

@patch('sfputil.main.platform_chassis')
@patch('sfputil.main.logical_port_to_physical_port_index', MagicMock(return_value=1))
@pytest.mark.parametrize("mock_response, expected", [
({'status': False, 'result': None} , -1),
({'status': True, 'result': ("1.0.1", 1, 1, 0, "1.0.2", 0, 0, 0)} , -1),
({'status': True, 'result': ("1.0.1", 0, 0, 0, "1.0.2", 1, 1, 0)} , -1),
({'status': True, 'result': ("1.0.1", 1, 0, 0, "1.0.2", 0, 1, 0)} , 1),
({'status': True, 'result': ("1.0.1", 0, 1, 0, "1.0.2", 1, 0, 0)} , 1),
({'status': True, 'result': ("1.0.1", 1, 0, 1, "1.0.2", 0, 1, 0)} , -1),
({'status': True, 'result': ("1.0.1", 0, 1, 0, "1.0.2", 1, 0, 1)} , -1),

# "is_fw_switch_done" function will waiting until timeout under below condition, so that this test will spend around 1min.
({'status': False, 'result': 0} , -1),
])
def test_is_fw_switch_done(self, mock_chassis, mock_response, expected):
mock_sfp = MagicMock()
mock_api = MagicMock()
mock_sfp.get_xcvr_api = MagicMock(return_value=mock_api)
mock_sfp.get_presence.return_value = True
mock_chassis.get_sfp = MagicMock(return_value=mock_sfp)
mock_api.get_module_fw_info.return_value = mock_response
status = sfputil.is_fw_switch_done("Ethernet0")
assert status == expected

@patch('sfputil.main.platform_chassis')
@patch('sfputil.main.logical_port_to_physical_port_index', MagicMock(return_value=1))
def test_commit_firmwre(self, mock_chassis):
Expand Down