mirror of
https://github.com/brain-hackers/linux-brain.git
synced 2024-06-09 23:36:23 +09:00
3daf8e703e
Simple test that sets cb to {1,2,3,4,5} and priority to 6, runs bpf
program that fails if cb is not what we expect and increments cb[i] and
priority. When the test finishes, we check that cb is now {2,3,4,5,6}
and priority is 7.
We also test the sanity checks:
* ctx_in is provided, but ctx_size_in is zero (same for
ctx_out/ctx_size_out)
* unexpected non-zero fields in __sk_buff return EINVAL
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
22 lines
367 B
C
22 lines
367 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
#include <linux/bpf.h>
|
|
#include "bpf_helpers.h"
|
|
|
|
int _version SEC("version") = 1;
|
|
char _license[] SEC("license") = "GPL";
|
|
|
|
SEC("skb_ctx")
|
|
int process(struct __sk_buff *skb)
|
|
{
|
|
#pragma clang loop unroll(full)
|
|
for (int i = 0; i < 5; i++) {
|
|
if (skb->cb[i] != i + 1)
|
|
return 1;
|
|
skb->cb[i]++;
|
|
}
|
|
skb->priority++;
|
|
|
|
return 0;
|
|
}
|