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selftests: net: py: add tc utility

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Add a wrapper similar to existing ip, ethtool, ... commands.

Tc takes a slightly different syntax. Account for that.

The first user is the next patch in this series, converting so_txtime
to drv-net. Pacing offload is supported by selected qdiscs only.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260504174056.565319-3-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Willem de Bruijn 2026-05-04 13:38:33 -04:00 committed by Jakub Kicinski
parent d9c1e7dc4a
commit 49bf9e5e7c
3 changed files with 16 additions and 5 deletions
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5
tools/testing/selftests/drivers/net/lib/py/__init__.py
View File

@ -23,7 +23,8 @@ try:
NlError, RtnlFamily, DevlinkFamily, PSPFamily, Netlink
from net.lib.py import CmdExitFailure
from net.lib.py import bkg, cmd, bpftool, bpftrace, defer, ethtool, \
fd_read_timeout, ip, rand_port, rand_ports, wait_port_listen, wait_file
fd_read_timeout, ip, rand_port, rand_ports, tc, wait_port_listen, \
wait_file
from net.lib.py import bpf_map_set, bpf_map_dump, bpf_prog_map_ids
from net.lib.py import KsftSkipEx, KsftFailEx, KsftXfailEx
from net.lib.py import ksft_disruptive, ksft_exit, ksft_pr, ksft_run, \
@ -36,7 +37,7 @@ try:
"NlError", "RtnlFamily", "DevlinkFamily", "PSPFamily", "Netlink",
"CmdExitFailure",
"bkg", "cmd", "bpftool", "bpftrace", "defer", "ethtool",
"fd_read_timeout", "ip", "rand_port", "rand_ports",
"fd_read_timeout", "ip", "rand_port", "rand_ports", "tc",
"wait_port_listen", "wait_file",
"bpf_map_set", "bpf_map_dump", "bpf_prog_map_ids",
"KsftSkipEx", "KsftFailEx", "KsftXfailEx",

4
tools/testing/selftests/net/lib/py/__init__.py
View File

@ -14,7 +14,7 @@ from .netns import NetNS, NetNSEnter
from .nsim import NetdevSim, NetdevSimDev
from .utils import CmdExitFailure, fd_read_timeout, cmd, bkg, defer, \
bpftool, ip, ethtool, bpftrace, rand_port, rand_ports, wait_port_listen, \
wait_file, tool
wait_file, tool, tc
from .bpf import bpf_map_set, bpf_map_dump, bpf_prog_map_ids
from .ynl import NlError, NlctrlFamily, YnlFamily, \
EthtoolFamily, NetdevFamily, RtnlFamily, RtnlAddrFamily
@ -29,7 +29,7 @@ __all__ = ["KSRC",
"NetNS", "NetNSEnter",
"CmdExitFailure", "fd_read_timeout", "cmd", "bkg", "defer",
"bpftool", "ip", "ethtool", "bpftrace", "rand_port", "rand_ports",
"wait_port_listen", "wait_file", "tool",
"wait_port_listen", "wait_file", "tool", "tc",
"bpf_map_set", "bpf_map_dump", "bpf_prog_map_ids",
"NetdevSim", "NetdevSimDev",
"NetshaperFamily", "DevlinkFamily", "PSPFamily", "NlError",

12
tools/testing/selftests/net/lib/py/utils.py
View File

@ -239,7 +239,10 @@ class defer:
def tool(name, args, json=None, ns=None, host=None):
cmd_str = name + ' '
if json:
cmd_str += '--json '
if name == 'tc':
cmd_str += '-json '
else:
cmd_str += '--json '
cmd_str += args
cmd_obj = cmd(cmd_str, ns=ns, host=host)
if json:
@ -257,6 +260,13 @@ def ip(args, json=None, ns=None, host=None):
return tool('ip', args, json=json, host=host)
def tc(args, json=None, ns=None, host=None):
""" Helper to call tc with standard set of optional args. """
if ns:
args = f'-netns {ns} ' + args
return tool('tc', args, json=json, host=host)
def ethtool(args, json=None, ns=None, host=None):
return tool('ethtool', args, json=json, ns=ns, host=host)