From 05e59e5fb0064c97a1c10921ecd549f2d4a58565 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 09 Oct 2024 06:14:40 +0000
Subject: [PATCH] add REDIRECT
---
kernel/samples/bpf/tcp_rwnd_kern.c | 13 +++----------
1 files changed, 3 insertions(+), 10 deletions(-)
diff --git a/kernel/samples/bpf/tcp_rwnd_kern.c b/kernel/samples/bpf/tcp_rwnd_kern.c
index 09ff65b..223d9c2 100644
--- a/kernel/samples/bpf/tcp_rwnd_kern.c
+++ b/kernel/samples/bpf/tcp_rwnd_kern.c
@@ -8,7 +8,7 @@
* and the first 5.5 bytes of the IPv6 addresses are not the same (in this
* example that means both hosts are not the same datacenter).
*
- * Use load_sock_ops to load this BPF program.
+ * Use "bpftool cgroup attach $cg sock_ops $prog" to load this BPF program.
*/
#include <uapi/linux/bpf.h>
@@ -16,17 +16,10 @@
#include <uapi/linux/if_packet.h>
#include <uapi/linux/ip.h>
#include <linux/socket.h>
-#include "bpf_helpers.h"
-#include "bpf_endian.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_endian.h>
#define DEBUG 1
-
-#define bpf_printk(fmt, ...) \
-({ \
- char ____fmt[] = fmt; \
- bpf_trace_printk(____fmt, sizeof(____fmt), \
- ##__VA_ARGS__); \
-})
SEC("sockops")
int bpf_rwnd(struct bpf_sock_ops *skops)
--
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