testing: selftests: net: forwarding: add devlink-required functionality to test ...

Add devlink_trap_drop_packets_get function, as well as test that are
used to verify devlink (hard) dropped stats functionality works.

Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/testing/selftests/net/forwarding/devlink_lib.sh b/tools/testing/selftests/net/forwarding/devlink_lib.sh
index 39fb9b8e7b58e7c28316b28063c20bf268b8efe8..13d3d4428a320c04ff061382eb00322b40eef7f8 100644 (file)
--- a/tools/testing/selftests/net/forwarding/devlink_lib.sh
+++ b/tools/testing/selftests/net/forwarding/devlink_lib.sh
@@ -324,6 +324,14 @@ devlink_trap_rx_bytes_get()
                | jq '.[][][]["stats"]["rx"]["bytes"]'
 }
 
+devlink_trap_drop_packets_get()
+{
+       local trap_name=$1; shift
+
+       devlink -js trap show $DEVLINK_DEV trap $trap_name \
+               | jq '.[][][]["stats"]["rx"]["dropped"]'
+}
+
 devlink_trap_stats_idle_test()
 {
        local trap_name=$1; shift
@@ -345,6 +353,24 @@ devlink_trap_stats_idle_test()
        fi
 }
 
+devlink_trap_drop_stats_idle_test()
+{
+       local trap_name=$1; shift
+       local t0_packets t0_bytes
+
+       t0_packets=$(devlink_trap_drop_packets_get $trap_name)
+
+       sleep 1
+
+       t1_packets=$(devlink_trap_drop_packets_get $trap_name)
+
+       if [[ $t0_packets -eq $t1_packets ]]; then
+               return 0
+       else
+               return 1
+       fi
+}
+
 devlink_traps_enable_all()
 {
        local trap_name