90 lines
2.6 KiB
Python
90 lines
2.6 KiB
Python
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#!/usr/bin/env python3
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# SPDX-License-Identifier: GPL-2.0
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from lib.py import ksft_disruptive, ksft_exit, ksft_run
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from lib.py import ksft_eq, ksft_raises, KsftSkipEx
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from lib.py import EthtoolFamily, NetdevFamily, NlError
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from lib.py import NetDrvEnv
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from lib.py import cmd, defer, ip
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import errno
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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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@ksft_disruptive
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def check_down(cfg, nl) -> None:
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# Check the NAPI IDs before interface goes down and hides them
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napis = nl.napi_get({'ifindex': cfg.ifindex}, dump=True)
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ip(f"link set dev {cfg.dev['ifname']} down")
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defer(ip, f"link set dev {cfg.dev['ifname']} up")
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with ksft_raises(NlError) as cm:
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nl.queue_get({'ifindex': cfg.ifindex, 'id': 0, 'type': 'rx'})
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ksft_eq(cm.exception.nl_msg.error, -errno.ENOENT)
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if napis:
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with ksft_raises(NlError) as cm:
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nl.napi_get({'id': napis[0]['id']})
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ksft_eq(cm.exception.nl_msg.error, -errno.ENOENT)
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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, check_down], 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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