[PATCH net-next v2 2/6] selftests: net: py: teach cmd() how to print itself
From: Jakub Kicinski <kuba@kernel.org>
Date: 2026-01-10 00:51:39
Also in:
linux-kselftest
Subsystem:
kernel selftest framework, networking [general], the rest · Maintainers:
Shuah Khan, Shuah Khan, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Teach cmd() how to print itself, to make debug prints easier.
Example output (leading # due to ksft_pr()):
# CMD: /root/ksft-net-drv/drivers/net/gro
# EXIT: 1
# STDOUT: ipv6 with ext header does coalesce:
# STDERR: Expected {200 }, Total 1 packets
# Received {100 [!=200]100 [!=0]}, Total 2 packets.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
tools/testing/selftests/net/lib/py/utils.py | 23 +++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/tools/testing/selftests/net/lib/py/utils.py b/tools/testing/selftests/net/lib/py/utils.py
index 106ee1f2df86..881a17fbb5fd 100644
--- a/tools/testing/selftests/net/lib/py/utils.py
+++ b/tools/testing/selftests/net/lib/py/utils.py@@ -41,7 +41,9 @@ import time self.ret = None self.ksft_term_fd = None + self.host = host self.comm = comm + if host: self.proc = host.cmd(comm) else:
@@ -99,6 +101,27 @@ import time raise CmdExitFailure("Command failed: %s\nSTDOUT: %s\nSTDERR: %s" % (self.proc.args, stdout, stderr), self) + def __repr__(self): + def str_fmt(name, s): + name += ': ' + return (name + s.strip().replace('\n', '\n' + ' ' * len(name))) + + ret = "CMD" + if self.host: + ret += "[remote]" + if self.ret is None: + ret += f" (unterminated): {self.comm}\n" + elif self.ret == 0: + ret += f" (success): {self.comm}\n" + else: + ret += f": {self.comm}\n" + ret += f" EXIT: {self.ret}\n" + if self.stdout: + ret += str_fmt(" STDOUT", self.stdout) + "\n" + if self.stderr: + ret += str_fmt(" STDERR", self.stderr) + "\n" + return ret.strip() + class bkg(cmd): """
--
2.52.0