tests: shell: add feature probe for sets with more than one element

Kernels < 5.11 can handle only one expression per element, e.g.
its possible to attach a counter per key, or a rate limiter,
or a quota, but not two at the same time.

Add a probe file and skip the relevant tests if the feature is absent.

Signed-off-by: Florian Westphal <fw@strlen.de>

3 files changed, 6 insertions, 0 deletions

diff --git a/tests/shell/testcases/sets/0059set_update_multistmt_0 b/tests/shell/testcases/sets/0059set_update_multistmt_0
index 107bfb87..2aeba2c5 100755
--- a/tests/shell/testcases/sets/0059set_update_multistmt_0
+++ b/tests/shell/testcases/sets/0059set_update_multistmt_0
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+# NFT_TEST_REQUIRES(NFT_TEST_HAVE_set_with_two_expressions)
+
 RULESET="table x {
 	set y {
 		type ipv4_addr
diff --git a/tests/shell/testcases/sets/0060set_multistmt_0 b/tests/shell/testcases/sets/0060set_multistmt_0
index 6bd147c3..8e17444e 100755
--- a/tests/shell/testcases/sets/0060set_multistmt_0
+++ b/tests/shell/testcases/sets/0060set_multistmt_0
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+# NFT_TEST_REQUIRES(NFT_TEST_HAVE_set_with_two_expressions)
+
 RULESET="table x {
 	set y {
 		type ipv4_addr
diff --git a/tests/shell/testcases/sets/0060set_multistmt_1 b/tests/shell/testcases/sets/0060set_multistmt_1
index 1652668a..04ef047c 100755
--- a/tests/shell/testcases/sets/0060set_multistmt_1
+++ b/tests/shell/testcases/sets/0060set_multistmt_1
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+# NFT_TEST_REQUIRES(NFT_TEST_HAVE_set_with_two_expressions)
+
 RULESET="table x {
 	set y {
 		type ipv4_addr