tools/testing/selftests/drivers/net/ping.py

Source file repositories/reference/linux-study-clean/tools/testing/selftests/drivers/net/ping.py

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/drivers/net/ping.py
Extension
.py
Size
8330 bytes
Lines
242
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#!/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"

Annotation

Implementation Notes