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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0
import os
import random, string, time
from lib.py import ksft_run, ksft_exit
from lib.py import ksft_eq, KsftSkipEx, KsftFailEx
from lib.py import EthtoolFamily, NetDrvEpEnv
from lib.py import bkg, cmd, wait_port_listen, rand_port
from lib.py import defer, ethtool, ip
no_sleep=False
def _test_v4(cfg) -> None:
if not cfg.addr_v["4"]:
return
cmd("ping -c 1 -W0.5 " + cfg.remote_addr_v["4"])
cmd("ping -c 1 -W0.5 " + cfg.addr_v["4"], host=cfg.remote)
cmd("ping -s 65000 -c 1 -W0.5 " + cfg.remote_addr_v["4"])
cmd("ping -s 65000 -c 1 -W0.5 " + cfg.addr_v["4"], host=cfg.remote)
def _test_v6(cfg) -> None:
if not cfg.addr_v["6"]:
return
cmd("ping -c 1 -W5 " + cfg.remote_addr_v["6"])
cmd("ping -c 1 -W5 " + cfg.addr_v["6"], host=cfg.remote)
cmd("ping -s 65000 -c 1 -W0.5 " + cfg.remote_addr_v["6"])
cmd("ping -s 65000 -c 1 -W0.5 " + cfg.addr_v["6"], host=cfg.remote)
def _test_tcp(cfg) -> None:
cfg.require_cmd("socat", local=False, remote=True)
port = rand_port()
listen_cmd = f"socat -{cfg.addr_ipver} -t 2 -u TCP-LISTEN:{port},reuseport STDOUT"
test_string = ''.join(random.choice(string.ascii_lowercase) for _ in range(65536))
with bkg(listen_cmd, exit_wait=True) as nc:
wait_port_listen(port)
cmd(f"echo {test_string} | socat -t 2 -u STDIN TCP:{cfg.baddr}:{port}",
shell=True, host=cfg.remote)
ksft_eq(nc.stdout.strip(), test_string)
test_string = ''.join(random.choice(string.ascii_lowercase) for _ in range(65536))
with bkg(listen_cmd, host=cfg.remote, exit_wait=True) as nc:
wait_port_listen(port, host=cfg.remote)
cmd(f"echo {test_string} | socat -t 2 -u STDIN TCP:{cfg.remote_baddr}:{port}", shell=True)
ksft_eq(nc.stdout.strip(), test_string)
def _schedule_checksum_reset(cfg, netnl) -> None:
features = ethtool(f"-k {cfg.ifname}", json=True)
setting = ""
for side in ["tx", "rx"]:
f = features[0][side + "-checksumming"]
if not f["fixed"]:
setting += " " + side
setting += " " + ("on" if f["requested"] or f["active"] else "off")
defer(ethtool, f" -K {cfg.ifname} " + setting)
def _set_offload_checksum(cfg, netnl, on) -> None:
try:
ethtool(f" -K {cfg.ifname} rx {on} tx {on} ")
except:
return
def _set_xdp_generic_sb_on(cfg) -> None:
prog = cfg.net_lib_dir / "xdp_dummy.bpf.o"
cmd(f"ip link set dev {cfg.remote_ifname} mtu 1500", shell=True, host=cfg.remote)
cmd(f"ip link set dev {cfg.ifname} mtu 1500 xdpgeneric obj {prog} sec xdp", shell=True)
defer(cmd, f"ip link set dev {cfg.ifname} xdpgeneric off")
if no_sleep != True:
time.sleep(10)
def _set_xdp_generic_mb_on(cfg) -> None:
prog = cfg.net_lib_dir / "xdp_dummy.bpf.o"
cmd(f"ip link set dev {cfg.remote_ifname} mtu 9000", shell=True, host=cfg.remote)
defer(ip, f"link set dev {cfg.remote_ifname} mtu 1500", host=cfg.remote)
ip("link set dev %s mtu 9000 xdpgeneric obj %s sec xdp.frags" % (cfg.ifname, prog))
defer(ip, f"link set dev {cfg.ifname} mtu 1500 xdpgeneric off")
if no_sleep != True:
time.sleep(10)
def _set_xdp_native_sb_on(cfg) -> None:
prog = cfg.net_lib_dir / "xdp_dummy.bpf.o"
cmd(f"ip link set dev {cfg.remote_ifname} mtu 1500", shell=True, host=cfg.remote)
cmd(f"ip -j link set dev {cfg.ifname} mtu 1500 xdp obj {prog} sec xdp", shell=True)
defer(ip, f"link set dev {cfg.ifname} mtu 1500 xdp off")
xdp_info = ip("-d link show %s" % (cfg.ifname), json=True)[0]
if xdp_info['xdp']['mode'] != 1:
"""
If the interface doesn't support native-mode, it falls back to generic mode.
The mode value 1 is native and 2 is generic.
So it raises an exception if mode is not 1(native mode).
"""
raise KsftSkipEx('device does not support native-XDP')
if no_sleep != True:
time.sleep(10)
def _set_xdp_native_mb_on(cfg) -> None:
prog = cfg.net_lib_dir / "xdp_dummy.bpf.o"
cmd(f"ip link set dev {cfg.remote_ifname} mtu 9000", shell=True, host=cfg.remote)
defer(ip, f"link set dev {cfg.remote_ifname} mtu 1500", host=cfg.remote)
try:
cmd(f"ip link set dev {cfg.ifname} mtu 9000 xdp obj {prog} sec xdp.frags", shell=True)
defer(ip, f"link set dev {cfg.ifname} mtu 1500 xdp off")
except Exception as e:
raise KsftSkipEx('device does not support native-multi-buffer XDP')
if no_sleep != True:
time.sleep(10)
def _set_xdp_offload_on(cfg) -> None:
prog = cfg.net_lib_dir / "xdp_dummy.bpf.o"
cmd(f"ip link set dev {cfg.ifname} mtu 1500", shell=True)
try:
cmd(f"ip link set dev {cfg.ifname} xdpoffload obj {prog} sec xdp", shell=True)
except Exception as e:
raise KsftSkipEx('device does not support offloaded XDP')
defer(ip, f"link set dev {cfg.ifname} xdpoffload off")
cmd(f"ip link set dev {cfg.remote_ifname} mtu 1500", shell=True, host=cfg.remote)
if no_sleep != True:
time.sleep(10)
def get_interface_info(cfg) -> None:
global no_sleep
if cfg.remote_ifname == "":
raise KsftFailEx('Can not get remote interface')
local_info = ip("-d link show %s" % (cfg.ifname), json=True)[0]
if 'parentbus' in local_info and local_info['parentbus'] == "netdevsim":
no_sleep=True
if 'linkinfo' in local_info and local_info['linkinfo']['info_kind'] == "veth":
no_sleep=True
def set_interface_init(cfg) -> None:
cmd(f"ip link set dev {cfg.ifname} mtu 1500", shell=True)
cmd(f"ip link set dev {cfg.ifname} xdp off ", shell=True)
cmd(f"ip link set dev {cfg.ifname} xdpgeneric off ", shell=True)
cmd(f"ip link set dev {cfg.ifname} xdpoffload off", shell=True)
cmd(f"ip link set dev {cfg.remote_ifname} mtu 1500", shell=True, host=cfg.remote)
def test_default_v4(cfg, netnl) -> None:
cfg.require_ipver("4")
_schedule_checksum_reset(cfg, netnl)
_set_offload_checksum(cfg, netnl, "off")
_test_v4(cfg)
_test_tcp(cfg)
_set_offload_checksum(cfg, netnl, "on")
_test_v4(cfg)
_test_tcp(cfg)
def test_default_v6(cfg, netnl) -> None:
cfg.require_ipver("6")
_schedule_checksum_reset(cfg, netnl)
_set_offload_checksum(cfg, netnl, "off")
_test_v6(cfg)
_test_tcp(cfg)
_set_offload_checksum(cfg, netnl, "on")
_test_v6(cfg)
_test_tcp(cfg)
def test_xdp_generic_sb(cfg, netnl) -> None:
_schedule_checksum_reset(cfg, netnl)
_set_xdp_generic_sb_on(cfg)
_set_offload_checksum(cfg, netnl, "off")
_test_v4(cfg)
_test_v6(cfg)
_test_tcp(cfg)
_set_offload_checksum(cfg, netnl, "on")
_test_v4(cfg)
_test_v6(cfg)
_test_tcp(cfg)
def test_xdp_generic_mb(cfg, netnl) -> None:
_schedule_checksum_reset(cfg, netnl)
_set_xdp_generic_mb_on(cfg)
_set_offload_checksum(cfg, netnl, "off")
_test_v4(cfg)
_test_v6(cfg)
_test_tcp(cfg)
_set_offload_checksum(cfg, netnl, "on")
_test_v4(cfg)
_test_v6(cfg)
_test_tcp(cfg)
def test_xdp_native_sb(cfg, netnl) -> None:
_schedule_checksum_reset(cfg, netnl)
_set_xdp_native_sb_on(cfg)
_set_offload_checksum(cfg, netnl, "off")
_test_v4(cfg)
_test_v6(cfg)
_test_tcp(cfg)
_set_offload_checksum(cfg, netnl, "on")
_test_v4(cfg)
_test_v6(cfg)
_test_tcp(cfg)
def test_xdp_native_mb(cfg, netnl) -> None:
_schedule_checksum_reset(cfg, netnl)
_set_xdp_native_mb_on(cfg)
_set_offload_checksum(cfg, netnl, "off")
_test_v4(cfg)
_test_v6(cfg)
_test_tcp(cfg)
_set_offload_checksum(cfg, netnl, "on")
_test_v4(cfg)
_test_v6(cfg)
_test_tcp(cfg)
def test_xdp_offload(cfg, netnl) -> None:
_set_xdp_offload_on(cfg)
_test_v4(cfg)
_test_v6(cfg)
_test_tcp(cfg)
def main() -> None:
with NetDrvEpEnv(__file__) as cfg:
get_interface_info(cfg)
set_interface_init(cfg)
ksft_run([test_default_v4,
test_default_v6,
test_xdp_generic_sb,
test_xdp_generic_mb,
test_xdp_native_sb,
test_xdp_native_mb,
test_xdp_offload],
args=(cfg, EthtoolFamily()))
ksft_exit()
if __name__ == "__main__":
main()
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