iou-zcrx.py

  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, KsftSkipEx
  7from lib.py import NetDrvEpEnv
  8from lib.py import bkg, cmd, defer, ethtool, rand_port, wait_port_listen
  9
 10
 11def _get_current_settings(cfg):
 12    output = ethtool(f"-g {cfg.ifname}", json=True)[0]
 13    return (output['rx'], output['hds-thresh'])
 14
 15
 16def _get_combined_channels(cfg):
 17    output = ethtool(f"-l {cfg.ifname}").stdout
 18    values = re.findall(r'Combined:\s+(\d+)', output)
 19    return int(values[1])
 20
 21
 22def _create_rss_ctx(cfg, chan):
 23    output = ethtool(f"-X {cfg.ifname} context new start {chan} equal 1").stdout
 24    values = re.search(r'New RSS context is (\d+)', output).group(1)
 25    ctx_id = int(values)
 26    return (ctx_id, defer(ethtool, f"-X {cfg.ifname} delete context {ctx_id}"))
 27
 28
 29def _set_flow_rule(cfg, port, chan):
 30    output = ethtool(f"-N {cfg.ifname} flow-type tcp6 dst-port {port} action {chan}").stdout
 31    values = re.search(r'ID (\d+)', output).group(1)
 32    return int(values)
 33
 34
 35def _set_flow_rule_rss(cfg, port, ctx_id):
 36    output = ethtool(f"-N {cfg.ifname} flow-type tcp6 dst-port {port} context {ctx_id}").stdout
 37    values = re.search(r'ID (\d+)', output).group(1)
 38    return int(values)
 39
 40
 41def test_zcrx(cfg) -> None:
 42    cfg.require_ipver('6')
 43
 44    combined_chans = _get_combined_channels(cfg)
 45    if combined_chans < 2:
 46        raise KsftSkipEx('at least 2 combined channels required')
 47    (rx_ring, hds_thresh) = _get_current_settings(cfg)
 48    port = rand_port()
 49
 50    ethtool(f"-G {cfg.ifname} tcp-data-split on")
 51    defer(ethtool, f"-G {cfg.ifname} tcp-data-split auto")
 52
 53    ethtool(f"-G {cfg.ifname} hds-thresh 0")
 54    defer(ethtool, f"-G {cfg.ifname} hds-thresh {hds_thresh}")
 55
 56    ethtool(f"-G {cfg.ifname} rx 64")
 57    defer(ethtool, f"-G {cfg.ifname} rx {rx_ring}")
 58
 59    ethtool(f"-X {cfg.ifname} equal {combined_chans - 1}")
 60    defer(ethtool, f"-X {cfg.ifname} default")
 61
 62    flow_rule_id = _set_flow_rule(cfg, port, combined_chans - 1)
 63    defer(ethtool, f"-N {cfg.ifname} delete {flow_rule_id}")
 64
 65    rx_cmd = f"{cfg.bin_local} -s -p {port} -i {cfg.ifname} -q {combined_chans - 1}"
 66    tx_cmd = f"{cfg.bin_remote} -c -h {cfg.addr_v['6']} -p {port} -l 12840"
 67    with bkg(rx_cmd, exit_wait=True):
 68        wait_port_listen(port, proto="tcp")
 69        cmd(tx_cmd, host=cfg.remote)
 70
 71
 72def test_zcrx_oneshot(cfg) -> None:
 73    cfg.require_ipver('6')
 74
 75    combined_chans = _get_combined_channels(cfg)
 76    if combined_chans < 2:
 77        raise KsftSkipEx('at least 2 combined channels required')
 78    (rx_ring, hds_thresh) = _get_current_settings(cfg)
 79    port = rand_port()
 80
 81    ethtool(f"-G {cfg.ifname} tcp-data-split on")
 82    defer(ethtool, f"-G {cfg.ifname} tcp-data-split auto")
 83
 84    ethtool(f"-G {cfg.ifname} hds-thresh 0")
 85    defer(ethtool, f"-G {cfg.ifname} hds-thresh {hds_thresh}")
 86
 87    ethtool(f"-G {cfg.ifname} rx 64")
 88    defer(ethtool, f"-G {cfg.ifname} rx {rx_ring}")
 89
 90    ethtool(f"-X {cfg.ifname} equal {combined_chans - 1}")
 91    defer(ethtool, f"-X {cfg.ifname} default")
 92
 93    flow_rule_id = _set_flow_rule(cfg, port, combined_chans - 1)
 94    defer(ethtool, f"-N {cfg.ifname} delete {flow_rule_id}")
 95
 96    rx_cmd = f"{cfg.bin_local} -s -p {port} -i {cfg.ifname} -q {combined_chans - 1} -o 4"
 97    tx_cmd = f"{cfg.bin_remote} -c -h {cfg.addr_v['6']} -p {port} -l 4096 -z 16384"
 98    with bkg(rx_cmd, exit_wait=True):
 99        wait_port_listen(port, proto="tcp")
100        cmd(tx_cmd, host=cfg.remote)
101
102
103def test_zcrx_rss(cfg) -> None:
104    cfg.require_ipver('6')
105
106    combined_chans = _get_combined_channels(cfg)
107    if combined_chans < 2:
108        raise KsftSkipEx('at least 2 combined channels required')
109    (rx_ring, hds_thresh) = _get_current_settings(cfg)
110    port = rand_port()
111
112    ethtool(f"-G {cfg.ifname} tcp-data-split on")
113    defer(ethtool, f"-G {cfg.ifname} tcp-data-split auto")
114
115    ethtool(f"-G {cfg.ifname} hds-thresh 0")
116    defer(ethtool, f"-G {cfg.ifname} hds-thresh {hds_thresh}")
117
118    ethtool(f"-G {cfg.ifname} rx 64")
119    defer(ethtool, f"-G {cfg.ifname} rx {rx_ring}")
120
121    ethtool(f"-X {cfg.ifname} equal {combined_chans - 1}")
122    defer(ethtool, f"-X {cfg.ifname} default")
123
124    (ctx_id, delete_ctx) = _create_rss_ctx(cfg, combined_chans - 1)
125    flow_rule_id = _set_flow_rule_rss(cfg, port, ctx_id)
126    defer(ethtool, f"-N {cfg.ifname} delete {flow_rule_id}")
127
128    rx_cmd = f"{cfg.bin_local} -s -p {port} -i {cfg.ifname} -q {combined_chans - 1}"
129    tx_cmd = f"{cfg.bin_remote} -c -h {cfg.addr_v['6']} -p {port} -l 12840"
130    with bkg(rx_cmd, exit_wait=True):
131        wait_port_listen(port, proto="tcp")
132        cmd(tx_cmd, host=cfg.remote)
133
134
135def main() -> None:
136    with NetDrvEpEnv(__file__) as cfg:
137        cfg.bin_local = path.abspath(path.dirname(__file__) + "/../../../drivers/net/hw/iou-zcrx")
138        cfg.bin_remote = cfg.remote.deploy(cfg.bin_local)
139
140        ksft_run(globs=globals(), case_pfx={"test_"}, args=(cfg, ))
141    ksft_exit()
142
143
144if __name__ == "__main__":
145    main()