xref: /linux/tools/testing/selftests/drivers/net/hw/iou-zcrx.py (revision f694f30e81c4ade358eb8c75273bac1a48f0cb8f) 
1#!/usr/bin/env python3
2# SPDX-License-Identifier: GPL-2.0
3
4import re
5from os import path
6from lib.py import ksft_run, ksft_exit
7from lib.py import NetDrvEpEnv
8from lib.py import bkg, cmd, ethtool, wait_port_listen
9
10
11def _get_rx_ring_entries(cfg):
12    output = ethtool(f"-g {cfg.ifname}", host=cfg.remote).stdout
13    values = re.findall(r'RX:\s+(\d+)', output)
14    return int(values[1])
15
16
17def _get_combined_channels(cfg):
18    output = ethtool(f"-l {cfg.ifname}", host=cfg.remote).stdout
19    values = re.findall(r'Combined:\s+(\d+)', output)
20    return int(values[1])
21
22
23def _set_flow_rule(cfg, chan):
24    output = ethtool(f"-N {cfg.ifname} flow-type tcp6 dst-port 9999 action {chan}", host=cfg.remote).stdout
25    values = re.search(r'ID (\d+)', output).group(1)
26    return int(values)
27
28
29def test_zcrx(cfg) -> None:
30    cfg.require_ipver('6')
31
32    combined_chans = _get_combined_channels(cfg)
33    if combined_chans < 2:
34        raise KsftSkipEx('at least 2 combined channels required')
35    rx_ring = _get_rx_ring_entries(cfg)
36
37    try:
38        ethtool(f"-G {cfg.ifname} rx 64", host=cfg.remote)
39        ethtool(f"-X {cfg.ifname} equal {combined_chans - 1}", host=cfg.remote)
40        flow_rule_id = _set_flow_rule(cfg, combined_chans - 1)
41
42        rx_cmd = f"{cfg.bin_remote} -s -p 9999 -i {cfg.ifname} -q {combined_chans - 1}"
43        tx_cmd = f"{cfg.bin_local} -c -h {cfg.remote_addr_v['6']} -p 9999 -l 12840"
44        with bkg(rx_cmd, host=cfg.remote, exit_wait=True):
45            wait_port_listen(9999, proto="tcp", host=cfg.remote)
46            cmd(tx_cmd)
47    finally:
48        ethtool(f"-N {cfg.ifname} delete {flow_rule_id}", host=cfg.remote)
49        ethtool(f"-X {cfg.ifname} default", host=cfg.remote)
50        ethtool(f"-G {cfg.ifname} rx {rx_ring}", host=cfg.remote)
51
52
53def test_zcrx_oneshot(cfg) -> None:
54    cfg.require_ipver('6')
55
56    combined_chans = _get_combined_channels(cfg)
57    if combined_chans < 2:
58        raise KsftSkipEx('at least 2 combined channels required')
59    rx_ring = _get_rx_ring_entries(cfg)
60
61    try:
62        ethtool(f"-G {cfg.ifname} rx 64", host=cfg.remote)
63        ethtool(f"-X {cfg.ifname} equal {combined_chans - 1}", host=cfg.remote)
64        flow_rule_id = _set_flow_rule(cfg, combined_chans - 1)
65
66        rx_cmd = f"{cfg.bin_remote} -s -p 9999 -i {cfg.ifname} -q {combined_chans - 1} -o 4"
67        tx_cmd = f"{cfg.bin_local} -c -h {cfg.remote_addr_v['6']} -p 9999 -l 4096 -z 16384"
68        with bkg(rx_cmd, host=cfg.remote, exit_wait=True):
69            wait_port_listen(9999, proto="tcp", host=cfg.remote)
70            cmd(tx_cmd)
71    finally:
72        ethtool(f"-N {cfg.ifname} delete {flow_rule_id}", host=cfg.remote)
73        ethtool(f"-X {cfg.ifname} default", host=cfg.remote)
74        ethtool(f"-G {cfg.ifname} rx {rx_ring}", host=cfg.remote)
75
76
77def main() -> None:
78    with NetDrvEpEnv(__file__) as cfg:
79        cfg.bin_local = path.abspath(path.dirname(__file__) + "/../../../drivers/net/hw/iou-zcrx")
80        cfg.bin_remote = cfg.remote.deploy(cfg.bin_local)
81
82        ksft_run(globs=globals(), case_pfx={"test_"}, args=(cfg, ))
83    ksft_exit()
84
85
86if __name__ == "__main__":
87    main()
88