add driver 5G

hc

2024-01-31 f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2

 kernel/samples/bpf/tcp_basertt_kern.c
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@@ -7,7 +7,7 @@
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  * BPF program to set base_rtt to 80us when host is running TCP-NV and
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  * both hosts are in the same datacenter (as determined by IPv6 prefix).
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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_basertt(struct bpf_sock_ops *skops)
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@@ -54,7 +47,7 @@
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 		case BPF_SOCK_OPS_BASE_RTT:
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 			n = bpf_getsockopt(skops, SOL_TCP, TCP_CONGESTION,
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 					   cong, sizeof(cong));
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-			if (!n && !__builtin_memcmp(cong, nv, sizeof(nv)+1)) {
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+			if (!n && !__builtin_memcmp(cong, nv, sizeof(nv))) {
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 				/* Set base_rtt to 80us */
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 				rv = 80;
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 			} else if (n) {