--- /dev/null
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0
+
+"""Run the tools/testing/selftests/net/csum testsuite."""
+
+from os import path
+
+from lib.py import ksft_run, ksft_exit, KsftSkipEx
+from lib.py import EthtoolFamily, NetDrvEpEnv
+from lib.py import bkg, cmd, wait_port_listen
+
+def test_receive(cfg, ipv4=False, extra_args=None):
+ """Test local nic checksum receive. Remote host sends crafted packets."""
+ if not cfg.have_rx_csum:
+ raise KsftSkipEx(f"Test requires rx checksum offload on {cfg.ifname}")
+
+ if ipv4:
+ ip_args = f"-4 -S {cfg.remote_v4} -D {cfg.v4}"
+ else:
+ ip_args = f"-6 -S {cfg.remote_v6} -D {cfg.v6}"
+
+ rx_cmd = f"{cfg.bin_local} -i {cfg.ifname} -n 100 {ip_args} -r 1 -R {extra_args}"
+ tx_cmd = f"{cfg.bin_remote} -i {cfg.ifname} -n 100 {ip_args} -r 1 -T {extra_args}"
+
+ with bkg(rx_cmd, exit_wait=True):
+ wait_port_listen(34000, proto="udp")
+ cmd(tx_cmd, host=cfg.remote)
+
+
+def test_transmit(cfg, ipv4=False, extra_args=None):
+ """Test local nic checksum transmit. Remote host verifies packets."""
+ if (not cfg.have_tx_csum_generic and
+ not (cfg.have_tx_csum_ipv4 and ipv4) and
+ not (cfg.have_tx_csum_ipv6 and not ipv4)):
+ raise KsftSkipEx(f"Test requires tx checksum offload on {cfg.ifname}")
+
+ if ipv4:
+ ip_args = f"-4 -S {cfg.v4} -D {cfg.remote_v4}"
+ else:
+ ip_args = f"-6 -S {cfg.v6} -D {cfg.remote_v6}"
+
+ # Cannot randomize input when calculating zero checksum
+ if extra_args != "-U -Z":
+ extra_args += " -r 1"
+
+ rx_cmd = f"{cfg.bin_remote} -i {cfg.ifname} -L 1 -n 100 {ip_args} -R {extra_args}"
+ tx_cmd = f"{cfg.bin_local} -i {cfg.ifname} -L 1 -n 100 {ip_args} -T {extra_args}"
+
+ with bkg(rx_cmd, host=cfg.remote, exit_wait=True):
+ wait_port_listen(34000, proto="udp", host=cfg.remote)
+ cmd(tx_cmd)
+
+
+def test_builder(name, cfg, ipv4=False, tx=False, extra_args=""):
+ """Construct specific tests from the common template.
+
+ Most tests follow the same basic pattern, differing only in
+ Direction of the test and optional flags passed to csum."""
+ def f(cfg):
+ if ipv4:
+ cfg.require_v4()
+ else:
+ cfg.require_v6()
+
+ if tx:
+ test_transmit(cfg, ipv4, extra_args)
+ else:
+ test_receive(cfg, ipv4, extra_args)
+
+ if ipv4:
+ f.__name__ = "ipv4_" + name
+ else:
+ f.__name__ = "ipv6_" + name
+ return f
+
+
+def check_nic_features(cfg) -> None:
+ """Test whether Tx and Rx checksum offload are enabled.
+
+ If the device under test has either off, then skip the relevant tests."""
+ cfg.have_tx_csum_generic = False
+ cfg.have_tx_csum_ipv4 = False
+ cfg.have_tx_csum_ipv6 = False
+ cfg.have_rx_csum = False
+
+ ethnl = EthtoolFamily()
+ features = ethnl.features_get({"header": {"dev-index": cfg.ifindex}})
+ for f in features["active"]["bits"]["bit"]:
+ if f["name"] == "tx-checksum-ip-generic":
+ cfg.have_tx_csum_generic = True
+ elif f["name"] == "tx-checksum-ipv4":
+ cfg.have_tx_csum_ipv4 = True
+ elif f["name"] == "tx-checksum-ipv6":
+ cfg.have_tx_csum_ipv6 = True
+ elif f["name"] == "rx-checksum":
+ cfg.have_rx_csum = True
+
+
+def main() -> None:
+ with NetDrvEpEnv(__file__, nsim_test=False) as cfg:
+ check_nic_features(cfg)
+
+ cfg.bin_local = path.abspath(path.dirname(__file__) + "/../../../net/lib/csum")
+ cfg.bin_remote = cfg.remote.deploy(cfg.bin_local)
+
+ cases = []
+ for ipv4 in [True, False]:
+ cases.append(test_builder("rx_tcp", cfg, ipv4, False, "-t"))
+ cases.append(test_builder("rx_tcp_invalid", cfg, ipv4, False, "-t -E"))
+
+ cases.append(test_builder("rx_udp", cfg, ipv4, False, ""))
+ cases.append(test_builder("rx_udp_invalid", cfg, ipv4, False, "-E"))
+
+ cases.append(test_builder("tx_udp_csum_offload", cfg, ipv4, True, "-U"))
+ cases.append(test_builder("tx_udp_zero_checksum", cfg, ipv4, True, "-U -Z"))
+
+ ksft_run(cases=cases, args=(cfg, ))
+ ksft_exit()
+
+
+if __name__ == "__main__":
+ main()
projects / linux.git / commitdiff