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[bpf-next,v2,11/16] selftests: xsk: decrease batch size

Message ID 20210817092729.433-12-magnus.karlsson@gmail.com (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series selftests: xsk: various simplifications | expand

Checks

Context Check Description
netdev/cover_letter success Link
netdev/fixes_present success Link
netdev/patch_count fail Series longer than 15 patches
netdev/tree_selection success Clearly marked for bpf-next
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netdev/cc_maintainers warning 9 maintainers not CCed: davem@davemloft.net songliubraving@fb.com shuah@kernel.org kafai@fb.com hawk@kernel.org kuba@kernel.org john.fastabend@gmail.com linux-kselftest@vger.kernel.org kpsingh@kernel.org
netdev/source_inline success Was 0 now: 0
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
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Commit Message

Magnus Karlsson Aug. 17, 2021, 9:27 a.m. UTC 
From: Magnus Karlsson <magnus.karlsson@intel.com>

Decrease the batch size from 64 to 8 to avoid potentially overflowing
some buffers in the skb case that leads to dropped packets we cannot
control (and thus the tests may generate false negatives).

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
---
 tools/testing/selftests/bpf/xdpxceiver.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 0fb657b505ae..1c5457e9f1d6 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -36,7 +36,7 @@ 
 #define UDP_PKT_DATA_SIZE (UDP_PKT_SIZE - sizeof(struct udphdr))
 #define USLEEP_MAX 10000
 #define SOCK_RECONF_CTR 10
-#define BATCH_SIZE 64
+#define BATCH_SIZE 8
 #define POLL_TMOUT 1000
 #define DEFAULT_PKT_CNT (4 * 1024)
 #define RX_FULL_RXQSIZE 32