linux-kernel - [PATCH v2 3/3] selftests/tc-testing: Fix cannot create /sys/bus/netdevsim/new

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Message-Id: <20211117054517.31847-3-zhijianx.li@intel.com>
Date:   Wed, 17 Nov 2021 13:45:17 +0800
From:   Li Zhijian <zhijianx.li@...el.com>
To:     shuah@...nel.org, kuba@...nel.org, dcaratti@...hat.com,
        linux-kselftest@...r.kernel.org
Cc:     lizhijian@...fujitsu.com, linux-kernel@...r.kernel.org,
        lkp@...el.com, philip.li@...el.com,
        Li Zhijian <zhijianx.li@...el.com>
Subject: [PATCH v2 3/3] selftests/tc-testing: Fix cannot create /sys/bus/netdevsim/new_device: Directory nonexistent

Install netdevsim to provide /sys/bus/netdevsim/new_device interface.

It helps to fix:
 # ok 97 9a7d - Change ETS strict band without quantum # skipped - skipped - previous setup failed 11 ce7d
 #
 #
 # -----> prepare stage *** Could not execute: "echo "1 1 4" > /sys/bus/netdevsim/new_device"
 #
 # -----> prepare stage *** Error message: "/bin/sh: 1: cannot create /sys/bus/netdevsim/new_device: Directory nonexistent
 # "
 #
 # -----> prepare stage *** Aborting test run.
 #
 #
 # <_io.BufferedReader name=5> *** stdout ***
 #

Signed-off-by: Li Zhijian <zhijianx.li@...el.com>
---
 tools/testing/selftests/tc-testing/config | 1 +
 tools/testing/selftests/tc-testing/tdc.sh | 1 +
 2 files changed, 2 insertions(+)

diff --git a/tools/testing/selftests/tc-testing/config b/tools/testing/selftests/tc-testing/config
index b1cd7efa4512..a3239d5e40c7 100644
--- a/tools/testing/selftests/tc-testing/config
+++ b/tools/testing/selftests/tc-testing/config
@@ -61,6 +61,7 @@ CONFIG_NET_SCH_FIFO=y
 CONFIG_NET_SCH_ETS=m
 CONFIG_NET_SCH_RED=m
 CONFIG_NET_SCH_FQ_PIE=m
+CONFIG_NETDEVSIM=m
 
 #
 ## Network testing
diff --git a/tools/testing/selftests/tc-testing/tdc.sh b/tools/testing/selftests/tc-testing/tdc.sh
index 7fe38c76db44..afb0cd86fa3d 100755
--- a/tools/testing/selftests/tc-testing/tdc.sh
+++ b/tools/testing/selftests/tc-testing/tdc.sh
@@ -1,5 +1,6 @@
 #!/bin/sh
 # SPDX-License-Identifier: GPL-2.0
 
+modprobe netdevsim
 ./tdc.py -c actions --nobuildebpf
 ./tdc.py -c qdisc
-- 
2.32.0