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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2023-01-28 03:06:29 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-01-28 23:30:08 +0300 |
| commit | 06c1865b0b0c7820ea53af2394dd7aff31100295 (patch) | |
| tree | ce1b2dcb668277ae65de52d34eaa9435fee766d6 /tools/testing/selftests/bpf/prog_tests | |
| parent | 56e1a50483194b2e0ac54849e94cc2b80480895e (diff) | |
| download | linux-06c1865b0b0c7820ea53af2394dd7aff31100295.tar.xz | |
selftests/bpf: Fix xdp_do_redirect on s390x
s390x cache line size is 256 bytes, so skb_shared_info must be aligned
on a much larger boundary than for x86. This makes the maximum packet
size smaller.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/r/20230128000650.1516334-11-iii@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c b/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c index a50971c6cf4a..ac70e871d62f 100644 --- a/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c +++ b/tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c @@ -65,7 +65,11 @@ static int attach_tc_prog(struct bpf_tc_hook *hook, int fd) /* The maximum permissible size is: PAGE_SIZE - sizeof(struct xdp_page_head) - * sizeof(struct skb_shared_info) - XDP_PACKET_HEADROOM = 3368 bytes */ +#if defined(__s390x__) +#define MAX_PKT_SIZE 3176 +#else #define MAX_PKT_SIZE 3368 +#endif static void test_max_pkt_size(int fd) { char data[MAX_PKT_SIZE + 1] = {}; |