diff mbox series

[bpf-next,09/24] selftests/bpf: Fix xdp_do_redirect on s390x

Message ID 20230125213817.1424447-10-iii@linux.ibm.com (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series Support bpf trampoline for s390x | expand

Checks

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bpf/vmtest-bpf-next-PR success PR summary
netdev/tree_selection success Clearly marked for bpf-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count fail Series longer than 15 patches (and no cover letter)
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 15 maintainers not CCed: sdf@google.com kuba@kernel.org kpsingh@kernel.org jolsa@kernel.org mykolal@fb.com davem@davemloft.net martin.lau@linux.dev song@kernel.org linux-kselftest@vger.kernel.org john.fastabend@gmail.com shuah@kernel.org haoluo@google.com hawk@kernel.org netdev@vger.kernel.org yhs@fb.com
netdev/build_clang success Errors and warnings before: 0 this patch: 0
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netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
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Commit Message

Ilya Leoshkevich Jan. 25, 2023, 9:38 p.m. UTC 
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>
---
 tools/testing/selftests/bpf/prog_tests/xdp_do_redirect.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

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] = {};