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net: netconsole: selftests: Check if netdevsim is available

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The netconsole selftest relies on the availability of the netdevsim module.
To ensure the test can run correctly, we need to check if the netdevsim
module is either loaded or built-in before proceeding.

Update the netconsole selftest to check for the existence of
the /sys/bus/netdevsim/new_device file before running the test. If the
file is not found, the test is skipped with an explanation that the
CONFIG_NETDEVSIM kernel config option may not be enabled.

Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20241108-netcon_selftest_deps-v1-1-1789cbf3adcd@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Breno Leitao 2024-11-08 06:59:25 -08:00 committed by Jakub Kicinski
parent 874ed898a2
commit 43271bb5bf
1 changed files with 6 additions and 1 deletions
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7
tools/testing/selftests/drivers/net/netcons_basic.sh
View File

@ -39,6 +39,7 @@ NAMESPACE=""
# IDs for netdevsim
NSIM_DEV_1_ID=$((256 + RANDOM % 256))
NSIM_DEV_2_ID=$((512 + RANDOM % 256))
NSIM_DEV_SYS_NEW="/sys/bus/netdevsim/new_device"
# Used to create and delete namespaces
source "${SCRIPTDIR}"/../../net/lib.sh
@ -46,7 +47,6 @@ source "${SCRIPTDIR}"/../../net/net_helper.sh
# Create netdevsim interfaces
create_ifaces() {
local NSIM_DEV_SYS_NEW=/sys/bus/netdevsim/new_device
echo "$NSIM_DEV_2_ID" > "$NSIM_DEV_SYS_NEW"
echo "$NSIM_DEV_1_ID" > "$NSIM_DEV_SYS_NEW"
@ -212,6 +212,11 @@ function check_for_dependencies() {
exit "${ksft_skip}"
fi
if [ ! -f "${NSIM_DEV_SYS_NEW}" ]; then
echo "SKIP: file ${NSIM_DEV_SYS_NEW} does not exist. Check if CONFIG_NETDEVSIM is enabled" >&2
exit "${ksft_skip}"
fi
if [ ! -d "${NETCONS_CONFIGFS}" ]; then
echo "SKIP: directory ${NETCONS_CONFIGFS} does not exist. Check if NETCONSOLE_DYNAMIC is enabled" >&2
exit "${ksft_skip}"