add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/testing/selftests/bpf/test_tcpbpf.h
..
..
@@ -13,5 +13,6 @@
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 	__u64 bytes_received;
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 	__u64 bytes_acked;
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 	__u32 num_listen;
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+	__u32 num_close_events;
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 };
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 #endif