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# SPDX-License-Identifier: (GPL-2.0 OR Linux-OpenIB)
# Copyright (c) 2019 Mellanox Technologies, Inc. All rights reserved. See COPYING file
"""
Test module for mlx5 packet pacing entry allocation.
"""
from pyverbs.providers.mlx5.mlx5dv import Mlx5PP, Mlx5Context, Mlx5DVContextAttr
from pyverbs.pyverbs_error import PyverbsRDMAError, PyverbsUserError
from pyverbs.providers.mlx5.mlx5_enums import mlx5dv_context_attr_flags, _MLX5DV_PP_ALLOC_FLAGS_DEDICATED_INDEX
from tests.mlx5_base import Mlx5RDMATestCase
import unittest
import struct
import errno
class Mlx5PPRes:
def __init__(self, dev_name):
try:
mlx5dv_attr = Mlx5DVContextAttr(mlx5dv_context_attr_flags.MLX5DV_CONTEXT_FLAGS_DEVX)
self.ctx = Mlx5Context(mlx5dv_attr, dev_name)
except PyverbsUserError as ex:
raise unittest.SkipTest('Could not open mlx5 context ({})'
.format(str(ex)))
except PyverbsRDMAError:
raise unittest.SkipTest('Opening mlx5 DevX context is not supported')
self.pps = []
class Mlx5PPTestCase(Mlx5RDMATestCase):
def setUp(self):
super().setUp()
self.pp_res = Mlx5PPRes(self.dev_name)
def test_pp_alloc(self):
"""
Allocate two packet pacing entries with the same configuration. One of
the entries is allocated with a dedicated index.
Then verify that the indexes are different and free the entries.
"""
# An arbitrary valid rate limit value (in kbps)
rate_limit = struct.pack('>I', 100)
try:
self.pp_res.pps.append(Mlx5PP(self.pp_res.ctx, rate_limit))
# Create a dedicated entry of the same previous configuration
# and verify that it has a different index
self.pp_res.pps.append(Mlx5PP(self.pp_res.ctx, rate_limit,
flags=_MLX5DV_PP_ALLOC_FLAGS_DEDICATED_INDEX))
self.assertNotEqual(self.pp_res.pps[0].index, self.pp_res.pps[1].index,
'Dedicated PP index is not unique')
for pp in self.pp_res.pps:
pp.close()
except PyverbsRDMAError as ex:
if ex.error_code == errno.EOPNOTSUPP or ex.error_code == errno.EPROTONOSUPPORT:
raise unittest.SkipTest('Packet pacing entry allocation is not supported')
raise ex
finally:
self.pp_res.ctx.close()
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