selftests: net: Skip test if IPv6 is not configured

Extend the `check_for_dependencies()` function in `lib_netcons.sh` to check
whether IPv6 is enabled by verifying the existence of
`/proc/net/if_inet6`. Having IPv6 is a now a dependency of netconsole
tests. If the file does not exist, the script will skip the test with an
appropriate message suggesting to verify if `CONFIG_IPV6` is enabled.

This prevents the test to misbehave if IPv6 is not configured.

Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250723-netcons_test_ipv6-v1-1-41c9092f93f9@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh b/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh
index 258af805497b43d3540f4e03120ffe6736d929f7..b6071e80ebbb6a33283ab6cd6bcb7b925aefdb43 100644 (file)
--- a/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh
+++ b/tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh
@@ -281,6 +281,11 @@ function check_for_dependencies() {
                exit "${ksft_skip}"
        fi
 
+       if [ ! -f /proc/net/if_inet6 ]; then
+               echo "SKIP: IPv6 not configured. Check if CONFIG_IPV6 is enabled" >&2
+               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}"