selftests/bpf: Fix test_xdp_adjust_tail_grow2 selftest on powerpc

On powerpc cache line size is 128 bytes, so skb_shared_info must be
aligned accordingly.

Signed-off-by: Saket Kumar Bhaskar <skb99@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20250110103109.3670793-1-skb99@linux.ibm.com

diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c
index 53d6ad8c2257eb6870c807950ca3709a6d4ddfa5..b2b2d85dbb1b4d5694a53595d4f2c09cb44464d7 100644 (file)
--- a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c
@@ -82,6 +82,8 @@ static void test_xdp_adjust_tail_grow2(void)
        /* SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) */
 #if defined(__s390x__)
        int tailroom = 512;
+#elif defined(__powerpc__)
+       int tailroom = 384;
 #else
        int tailroom = 320;
 #endif

diff --git a/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c b/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c
index 81bb38d72cedd58d533e92995f2efd6cdacde892..dc74d8cf9e3f5be3ac48b9c3cf5855f15b6a298e 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c
@@ -10,6 +10,8 @@ int _xdp_adjust_tail_grow(struct xdp_md *xdp)
        /* SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) */
 #if defined(__TARGET_ARCH_s390)
        int tailroom = 512;
+#elif defined(__TARGET_ARCH_powerpc)
+       int tailroom = 384;
 #else
        int tailroom = 320;
 #endif