Release 4.18 tools/testing/selftests/bpf/sockmap_tcp_msg_prog.c

#include <linux/bpf.h>
#include "bpf_helpers.h"
#include "bpf_util.h"
#include "bpf_endian.h"

int _version SEC("version") = 1;


#define bpf_printk(fmt, ...)					\
({                                                              \
               char ____fmt[] = fmt;                            \
               bpf_trace_printk(____fmt, sizeof(____fmt),       \
                                ##__VA_ARGS__);                 \
})

SEC("sk_msg1")


int bpf_prog1(struct sk_msg_md *msg)
{
	void *data_end = (void *)(long) msg->data_end;
	void *data = (void *)(long) msg->data;

	char *d;

	if (data + 8 > data_end)
		return SK_DROP;

	bpf_printk("data length %i\n", (__u64)msg->data_end - (__u64)msg->data);
	d = (char *)data;
	bpf_printk("hello sendmsg hook %i %i\n", d[0], d[1]);

	return SK_PASS;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
John Fastabend
100
100.00%
1
100.00%
Total
100
100.00%
1
100.00%


char _license[] SEC("license") = "GPL";
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
John Fastabend
145
100.00%
1
100.00%
Total
145
100.00%
1
100.00%
Directory: tools/testing/selftests/bpf

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.