1234810b16
This test already catches a netlink bug fixed by this series, but only when running on HW with many queues. Make sure the netdevsim instance created has a lot of queues, and constrain the size of the recv_buffer used by netlink. While at it test both rx and tx queues. Reviewed-by: Joe Damato <jdamato@fastly.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/20241213152244.3080955-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
69 lines
1.9 KiB
Python
Executable file
69 lines
1.9 KiB
Python
Executable file
#!/usr/bin/env python3
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# SPDX-License-Identifier: GPL-2.0
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from lib.py import ksft_run, ksft_exit, ksft_eq, KsftSkipEx
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from lib.py import EthtoolFamily, NetdevFamily
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from lib.py import NetDrvEnv
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from lib.py import cmd
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import glob
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def sys_get_queues(ifname, qtype='rx') -> int:
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folders = glob.glob(f'/sys/class/net/{ifname}/queues/{qtype}-*')
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return len(folders)
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def nl_get_queues(cfg, nl, qtype='rx'):
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queues = nl.queue_get({'ifindex': cfg.ifindex}, dump=True)
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if queues:
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return len([q for q in queues if q['type'] == qtype])
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return None
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def get_queues(cfg, nl) -> None:
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snl = NetdevFamily(recv_size=4096)
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for qtype in ['rx', 'tx']:
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queues = nl_get_queues(cfg, snl, qtype)
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if not queues:
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raise KsftSkipEx('queue-get not supported by device')
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expected = sys_get_queues(cfg.dev['ifname'], qtype)
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ksft_eq(queues, expected)
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def addremove_queues(cfg, nl) -> None:
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queues = nl_get_queues(cfg, nl)
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if not queues:
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raise KsftSkipEx('queue-get not supported by device')
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curr_queues = sys_get_queues(cfg.dev['ifname'])
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if curr_queues == 1:
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raise KsftSkipEx('cannot decrement queue: already at 1')
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netnl = EthtoolFamily()
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channels = netnl.channels_get({'header': {'dev-index': cfg.ifindex}})
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if channels['combined-count'] == 0:
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rx_type = 'rx'
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else:
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rx_type = 'combined'
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expected = curr_queues - 1
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cmd(f"ethtool -L {cfg.dev['ifname']} {rx_type} {expected}", timeout=10)
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queues = nl_get_queues(cfg, nl)
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ksft_eq(queues, expected)
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expected = curr_queues
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cmd(f"ethtool -L {cfg.dev['ifname']} {rx_type} {expected}", timeout=10)
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queues = nl_get_queues(cfg, nl)
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ksft_eq(queues, expected)
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def main() -> None:
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with NetDrvEnv(__file__, queue_count=100) as cfg:
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ksft_run([get_queues, addremove_queues], args=(cfg, NetdevFamily()))
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ksft_exit()
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if __name__ == "__main__":
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main()
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