1#include <linux/bpf.h>
 2
 3#include <bpf/bpf_helpers.h>
 4#include <bpf/bpf_endian.h>
 5
 
 
 6SEC("sk_msg1")
 7int bpf_prog1(struct sk_msg_md *msg)
 8{
 
 
 
 
 
 
 
 
 
 
 
 
 9	return SK_PASS;
10}
11
12char _license[] SEC("license") = "GPL";

 1#include <linux/bpf.h>
 2
 3#include <bpf/bpf_helpers.h>
 4#include <bpf/bpf_endian.h>
 5
 6int _version SEC("version") = 1;
 7
 8SEC("sk_msg1")
 9int bpf_prog1(struct sk_msg_md *msg)
10{
11	void *data_end = (void *)(long) msg->data_end;
12	void *data = (void *)(long) msg->data;
13
14	char *d;
15
16	if (data + 8 > data_end)
17		return SK_DROP;
18
19	bpf_printk("data length %i\n", (__u64)msg->data_end - (__u64)msg->data);
20	d = (char *)data;
21	bpf_printk("hello sendmsg hook %i %i\n", d[0], d[1]);
22
23	return SK_PASS;
24}
25
26char _license[] SEC("license") = "GPL";