From d2c5cca3fb58f96732e1dfd19e36b43e4e54d214 Mon Sep 17 00:00:00 2001 From: Jakub Sitnicki Date: Wed, 5 Nov 2025 21:19:53 +0100 Subject: selftests/bpf: Cover skb metadata access after bpf_skb_change_proto Add a test to verify that skb metadata remains accessible after calling bpf_skb_change_proto(), which modifies packet headroom to accommodate different IP header sizes. Signed-off-by: Jakub Sitnicki Signed-off-by: Martin KaFai Lau Link: https://patch.msgid.link/20251105-skb-meta-rx-path-v4-16-5ceb08a9b37b@cloudflare.com --- tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'tools/testing/selftests/bpf/prog_tests') diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c b/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c index 65735a134abb..ee94c281888a 100644 --- a/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c +++ b/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c @@ -502,6 +502,11 @@ void test_xdp_context_tuntap(void) skel->progs.helper_skb_change_head_tail, NULL, /* tc prio 2 */ &skel->bss->test_pass); + if (test__start_subtest("helper_skb_change_proto")) + test_tuntap(skel->progs.ing_xdp, + skel->progs.helper_skb_change_proto, + NULL, /* tc prio 2 */ + &skel->bss->test_pass); test_xdp_meta__destroy(skel); } -- cgit v1.2.3