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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
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c0f21784bc
Fix io_uring zero copy rx selftest with updated netdev Python helpers. Signed-off-by: David Wei <dw@davidwei.uk> Link: https://patch.msgid.link/20250402172414.895276-1-dw@davidwei.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
88 lines
3.0 KiB
Python
Executable File
88 lines
3.0 KiB
Python
Executable File
#!/usr/bin/env python3
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# SPDX-License-Identifier: GPL-2.0
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import re
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from os import path
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from lib.py import ksft_run, ksft_exit
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from lib.py import NetDrvEpEnv
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from lib.py import bkg, cmd, ethtool, wait_port_listen
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def _get_rx_ring_entries(cfg):
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output = ethtool(f"-g {cfg.ifname}", host=cfg.remote).stdout
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values = re.findall(r'RX:\s+(\d+)', output)
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return int(values[1])
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def _get_combined_channels(cfg):
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output = ethtool(f"-l {cfg.ifname}", host=cfg.remote).stdout
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values = re.findall(r'Combined:\s+(\d+)', output)
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return int(values[1])
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def _set_flow_rule(cfg, chan):
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output = ethtool(f"-N {cfg.ifname} flow-type tcp6 dst-port 9999 action {chan}", host=cfg.remote).stdout
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values = re.search(r'ID (\d+)', output).group(1)
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return int(values)
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def test_zcrx(cfg) -> None:
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cfg.require_ipver('6')
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combined_chans = _get_combined_channels(cfg)
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if combined_chans < 2:
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raise KsftSkipEx('at least 2 combined channels required')
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rx_ring = _get_rx_ring_entries(cfg)
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try:
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ethtool(f"-G {cfg.ifname} rx 64", host=cfg.remote)
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ethtool(f"-X {cfg.ifname} equal {combined_chans - 1}", host=cfg.remote)
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flow_rule_id = _set_flow_rule(cfg, combined_chans - 1)
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rx_cmd = f"{cfg.bin_remote} -s -p 9999 -i {cfg.ifname} -q {combined_chans - 1}"
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tx_cmd = f"{cfg.bin_local} -c -h {cfg.remote_addr_v['6']} -p 9999 -l 12840"
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with bkg(rx_cmd, host=cfg.remote, exit_wait=True):
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wait_port_listen(9999, proto="tcp", host=cfg.remote)
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cmd(tx_cmd)
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finally:
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ethtool(f"-N {cfg.ifname} delete {flow_rule_id}", host=cfg.remote)
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ethtool(f"-X {cfg.ifname} default", host=cfg.remote)
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ethtool(f"-G {cfg.ifname} rx {rx_ring}", host=cfg.remote)
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def test_zcrx_oneshot(cfg) -> None:
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cfg.require_ipver('6')
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combined_chans = _get_combined_channels(cfg)
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if combined_chans < 2:
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raise KsftSkipEx('at least 2 combined channels required')
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rx_ring = _get_rx_ring_entries(cfg)
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try:
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ethtool(f"-G {cfg.ifname} rx 64", host=cfg.remote)
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ethtool(f"-X {cfg.ifname} equal {combined_chans - 1}", host=cfg.remote)
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flow_rule_id = _set_flow_rule(cfg, combined_chans - 1)
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rx_cmd = f"{cfg.bin_remote} -s -p 9999 -i {cfg.ifname} -q {combined_chans - 1} -o 4"
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tx_cmd = f"{cfg.bin_local} -c -h {cfg.remote_addr_v['6']} -p 9999 -l 4096 -z 16384"
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with bkg(rx_cmd, host=cfg.remote, exit_wait=True):
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wait_port_listen(9999, proto="tcp", host=cfg.remote)
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cmd(tx_cmd)
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finally:
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ethtool(f"-N {cfg.ifname} delete {flow_rule_id}", host=cfg.remote)
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ethtool(f"-X {cfg.ifname} default", host=cfg.remote)
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ethtool(f"-G {cfg.ifname} rx {rx_ring}", host=cfg.remote)
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def main() -> None:
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with NetDrvEpEnv(__file__) as cfg:
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cfg.bin_local = path.abspath(path.dirname(__file__) + "/../../../drivers/net/hw/iou-zcrx")
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cfg.bin_remote = cfg.remote.deploy(cfg.bin_local)
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ksft_run(globs=globals(), case_pfx={"test_"}, args=(cfg, ))
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ksft_exit()
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if __name__ == "__main__":
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main()
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