From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- .../selftests/bpf/progs/load_bytes_relative.c | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/load_bytes_relative.c (limited to 'tools/testing/selftests/bpf/progs/load_bytes_relative.c') diff --git a/tools/testing/selftests/bpf/progs/load_bytes_relative.c b/tools/testing/selftests/bpf/progs/load_bytes_relative.c new file mode 100644 index 000000000..dc1d04a7a --- /dev/null +++ b/tools/testing/selftests/bpf/progs/load_bytes_relative.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0-only + +/* + * Copyright 2020 Google LLC. + */ + +#include +#include +#include +#include +#include + +struct { + __uint(type, BPF_MAP_TYPE_ARRAY); + __uint(max_entries, 1); + __type(key, __u32); + __type(value, __u32); +} test_result SEC(".maps"); + +SEC("cgroup_skb/egress") +int load_bytes_relative(struct __sk_buff *skb) +{ + struct ethhdr eth; + struct iphdr iph; + + __u32 map_key = 0; + __u32 test_passed = 0; + + /* MAC header is not set by the time cgroup_skb/egress triggers */ + if (bpf_skb_load_bytes_relative(skb, 0, ð, sizeof(eth), + BPF_HDR_START_MAC) != -EFAULT) + goto fail; + + if (bpf_skb_load_bytes_relative(skb, 0, &iph, sizeof(iph), + BPF_HDR_START_NET)) + goto fail; + + if (bpf_skb_load_bytes_relative(skb, 0xffff, &iph, sizeof(iph), + BPF_HDR_START_NET) != -EFAULT) + goto fail; + + test_passed = 1; + +fail: + bpf_map_update_elem(&test_result, &map_key, &test_passed, BPF_ANY); + + return 1; +} -- cgit v1.2.3