Files
linux/tools/testing/selftests/bpf/progs/test_skb_ctx.c
Nikita V. Shirokov 6de6c1f840 bpf: Allow to change skb mark in test_run
allow to pass skb's mark field into bpf_prog_test_run ctx
for BPF_PROG_TYPE_SCHED_CLS prog type. that would allow
to test bpf programs which are doing decision based on this
field

Signed-off-by: Nikita V. Shirokov <tehnerd@tehnerd.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-12-18 17:05:58 -08:00

29 lines
474 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++;
skb->tstamp++;
skb->mark++;
if (skb->wire_len != 100)
return 1;
if (skb->gso_segs != 8)
return 1;
return 0;
}