1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
// SPDX-License-Identifier: GPL-2.0
#ifndef __NETCNT_COMMON_H
#define __NETCNT_COMMON_H
#include <linux/types.h>
#define MAX_PERCPU_PACKETS 32
/* sizeof(struct bpf_local_storage_elem):
*
* It is about 128 bytes on x86_64 and 512 bytes on s390x, but allocate more to
* account for possible layout changes, different architectures, etc.
* The kernel will wrap up to PAGE_SIZE internally anyway.
*/
#define SIZEOF_BPF_LOCAL_STORAGE_ELEM 768
/* Try to estimate kernel's BPF_LOCAL_STORAGE_MAX_VALUE_SIZE: */
#define BPF_LOCAL_STORAGE_MAX_VALUE_SIZE (0xFFFF - \
SIZEOF_BPF_LOCAL_STORAGE_ELEM)
#define PCPU_MIN_UNIT_SIZE 32768
union percpu_net_cnt {
struct {
__u64 packets;
__u64 bytes;
__u64 prev_ts;
__u64 prev_packets;
__u64 prev_bytes;
};
__u8 data[PCPU_MIN_UNIT_SIZE];
};
union net_cnt {
struct {
__u64 packets;
__u64 bytes;
};
__u8 data[BPF_LOCAL_STORAGE_MAX_VALUE_SIZE];
};
#endif
|
