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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/samples/bpf/tcp_rwnd_kern.c
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@@ -8,7 +8,7 @@
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  * and the first 5.5 bytes of the IPv6 addresses are not the same (in this
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  * example that means both hosts are not the same datacenter).
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  *
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- * Use load_sock_ops to load this BPF program.
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+ * Use "bpftool cgroup attach $cg sock_ops $prog" to load this BPF program.
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  */
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 #include <uapi/linux/bpf.h>
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@@ -16,17 +16,10 @@
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 #include <uapi/linux/if_packet.h>
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 #include <uapi/linux/ip.h>
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 #include <linux/socket.h>
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-#include "bpf_helpers.h"
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-#include "bpf_endian.h"
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+#include <bpf/bpf_helpers.h>
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+#include <bpf/bpf_endian.h>
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 #define DEBUG 1
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-
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-#define bpf_printk(fmt, ...)					\
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-({								\
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-	       char ____fmt[] = fmt;				\
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-	       bpf_trace_printk(____fmt, sizeof(____fmt),	\
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-				##__VA_ARGS__);			\
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-})
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 SEC("sockops")
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 int bpf_rwnd(struct bpf_sock_ops *skops)