mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
37b1b3ed20
Extend commit e3c9abd0d1 ("selftests/bpf: Implement setting global
variables in veristat") to support applying presets to members of
the global structs or unions in veristat.
For example:
```
./veristat set_global_vars.bpf.o -G "union1.struct3.var_u8_h = 0xBB"
```
Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20250408104544.140317-1-mykyta.yatsenko5@gmail.com
27 lines
492 B
C
27 lines
492 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* Copyright (c) 2025 Meta */
|
|
#include <vmlinux.h>
|
|
#include <bpf/bpf_helpers.h>
|
|
|
|
char _license[] SEC("license") = "GPL";
|
|
|
|
int err;
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_RINGBUF);
|
|
__uint(max_entries, 4096);
|
|
} ringbuf SEC(".maps");
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_ARRAY);
|
|
__uint(max_entries, 1);
|
|
__type(key, __u32);
|
|
__type(value, __u32);
|
|
} array_map SEC(".maps");
|
|
|
|
SEC("cgroup_skb/egress")
|
|
int program(struct __sk_buff *skb)
|
|
{
|
|
err = 0;
|
|
return 0;
|
|
}
|