selftests: concurrency: add test to verify concurrent replace

Implement test that verifies concurrent replacement of rules by executing
10 tc instances that replace flower filters in same handle range.

Extend tdc_multibatch.py script with new optional CLI argument that is used
to generate all batch files with same filter handle range.

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 1 deletions

diff --git a/tools/testing/selftests/tc-testing/tdc_multibatch.py b/tools/testing/selftests/tc-testing/tdc_multibatch.py
index cd980d1785bb..0d8be39b5580 100755
--- a/tools/testing/selftests/tc-testing/tdc_multibatch.py
+++ b/tools/testing/selftests/tc-testing/tdc_multibatch.py
@@ -21,6 +21,11 @@ parser.add_argument(
     "operation",
     choices=['add', 'del', 'replace'],
     help="operation to perform on filters")
+parser.add_argument(
+    "-d",
+    "--duplicate_handles",
+    action="store_true",
+    help="duplicate filter handle range in all files")
 args = parser.parse_args()
 
 device = args.device
@@ -29,10 +34,12 @@ file_prefix = args.operation + "_"
 num_filters = args.num_filters
 num_files = args.num_files
 operation = args.operation
+duplicate_handles = args.duplicate_handles
 handle = 1
 
 for i in range(num_files):
     file = dir + '/' + file_prefix + str(i)
     os.system("./tdc_batch.py -n {} -a {} -e {} -m {} {} {}".format(
         num_filters, handle, operation, i, device, file))
-    handle += num_filters
+    if not duplicate_handles:
+        handle += num_filters