selftests: net: lib: Add ip_link_has_flag()

Add a helper to determine whether a given netdevice has a given flag.

Rewrite ip_link_is_up() in terms of the new helper.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/e1eb174a411f9d24735d095984c731d1d4a5a592.1750113335.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh
index 006fdad..ff0dbe2 100644 (file)
--- a/tools/testing/selftests/net/lib.sh
+++ b/tools/testing/selftests/net/lib.sh
@@ -547,13 +547,19 @@ ip_link_set_addr()
        defer ip link set dev "$name" address "$old_addr"
 }
 
-ip_link_is_up()
+ip_link_has_flag()
 {
        local name=$1; shift
+       local flag=$1; shift
 
        local state=$(ip -j link show "$name" |
-                     jq -r '(.[].flags[] | select(. == "UP")) // "DOWN"')
-       [[ $state == "UP" ]]
+                     jq --arg flag "$flag" 'any(.[].flags.[]; . == $flag)')
+       [[ $state == true ]]
+}
+
+ip_link_is_up()
+{
+       ip_link_has_flag "$1" UP
 }
 
 ip_link_set_up()