enable tun/tap/iptables

hc

2024-05-10 ee930fffee469d076998274a2ca55e13dc1efb67

 kernel/samples/bpf/tcbpf1_kern.c
..
..
@@ -7,7 +7,8 @@
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 #include <uapi/linux/tcp.h>
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 #include <uapi/linux/filter.h>
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 #include <uapi/linux/pkt_cls.h>
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-#include "bpf_helpers.h"
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+#include <bpf/bpf_helpers.h>
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+#include "bpf_legacy.h"
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 /* compiler workaround */
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 #define _htonl __builtin_bswap32