[PATCH net-next v3 13/15] selftests: net: lib: Add ip_link_has_flag()

[Petr Machata]

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 <pe...@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <ra...@blackwall.org>
---

Notes:
CC: Shuah Khan <sh...@kernel.org>
CC: linux-kselftest@vger.kernel.org

 tools/testing/selftests/net/lib.sh | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/net/lib.sh 
b/tools/testing/selftests/net/lib.sh
index 006fdadcc4b9..ff0dbe23e8e0 100644
--- 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()
-- 
2.49.0